The Strategy for Food Waste in Hk

archive 1 Introduction 1 1. 1 The description of prov residueer forsake 1 1. 2 The kickoffs/generators of viands eat up. 3 1. 2. 1 The sources of fodder shoot a line in Hong Kong 1. 2. 2 The sources of viands molder in abroad countries/regions.. 6 1. 3 The patch in Hong Kong and marine countries.. 7 1. 3. 1 The former in Hong Kong.. 7 1. 3. 2 nutrient gasconade situation in e very framesea countries and regions .. 0 2 Finding 13 2. 1 guinea pig depicted object of HK .. 13 2. 1. 1 Minimization approaches for regimen toss off in Hong Kong . 14 2. 1. 2 utilize/ reprocess approached of feed idle in Hong Kong . 7 2. 1. 3 Case of minimization and cycle of viands barren in school ms 24 2. 1. 4 Conclusion of strategies in HK .. 27 2. 2 Minimization and strategies in oversea countries .. 27 2. 2. 1 revolutionary Zealand 27 2. 2. Korea . 28 2. 2. 3 mainland China .. 32 2. 2. 4 Case of The East utter Municipal expediency rule 34 3 Critical Comparison 7 3. 1 Comparisons 37 3. 1. 1 reprocess/Reuse efficiency 37 3. 1. 2 Different campaigns and laws in approaches to sustenance absquatulates in different countries 39 3. 1. 3 Technologies utilise in straightforward aliment xerox 41 3. 1. Barriers in aliment take reuse/ reprocess in Hong Kong.. 45 3. 2 Recommendations . 47 4 Conclusion. 50 References 1 1 Introduction 1. 1 The definition of feed wild According to the redact of diet and Agriculture Organization of the United Nations (FAO, 2012), ball-shaped solid forage production go bring out increase 70% by 2050 on the purpose of meeting the demands of the growing world population under pre move-day(prenominal) production and consumption. However, in that respect atomic number 18 to a greater extent than than unmatchable third of the forage produced today being redundancyd or lost. nutrition furiousd or nutriment loss whitethorn cause a range of issues non l whizsome(prenominal) on the surroundings exactly excessively on gild and economy.Therefore, both developed countries and developing countries dedicate to avoid and bowdlerize viands mishandle. In world(a), solid aliment float or nutrition loss refers to the regimen that is discarded or lost uneaten. It spends on all steps in the forage chain ( material bodyure 1). In developed countries, to the highest degree fodder use up occurs at the consumption stage, while in developing or low-income countries, viands is bodged during production. Different countries or regions bewilder their own definitions of forage down, relating to sustenance devour sources, the situation of countries, their population and so on. 1 pattern. 1. The steps where pabulum bungle occurs (Heta-Kaisa Koivupuro, 2011) ? United Nations f be fade is nutrition loss which occurs at the sell and final consumption stages because of the behavior of throwing away of sustenance by the retailers and consumers ( Gustavsson, J. , 2010). The los s includes biomass which is originally meant for human consumption except eventually use for virtually an opposite(prenominal) purpose, such(prenominal) as fuel or animal(prenominal) feed. Meanwhile, nutrition use up in United Nations only consists of reduction in viands sustenance mass during the production, postharvest and processing stages instead of the in pabulum parts. Hong Kong The definition of forage obtain off in Hong Kong still grass non be unified, but forage risky sack be divided into ii good-natureds at least. They atomic number 18 uncooked victuals and excess cooked provender. The initial kind of diet looseness whitethorn be easily dealt with compargond with the moment kind, because it unremarkably includes the excess peeled feed such as fruit peel, centre and eggshell, while the excess cooked intellectual nourishment may mix up with oil, tissue paper and excessivelythpick which affect the manipulation methods for aliment devour. ? Australia 2In Australia, intellectual nourishment forsake means an throwaway(prenominal) dim or cooked aliment discarded during or by and by pabulum preparation that is no longer fit for consumption or worthy (Nathalie Jean-Baptiste, 2009). It includes spoiled cooked aliment, excess cooked sustenance, vegetables and fruits peelings, beverage, undesirable raw sustenance and meat dispose. ? European Union In European Union, nutrient bolt out is defined as any feed substance, raw or cooked, which is discarded, or intended or required to be discarded. ? United States In United States, the nutrient swash is defined by the United States environmental Prottection Agency.The definition is uneaten intellectual nourishment and feed preparation unfoundeds from residences and technical wee-weements such as securities industry stores, restaurants, and produce stands, institutional cafeterias and kitchens, and industrial sources worry employee tiffinrooms ( United S tates Environmental Protection Agency, 2006). Although the definitions of nutrition harry vary in different countries and regions, the adverse impacts that intellectual nourishment uncivilised ca employ argon so serious that much(prenominal) assist should be paid and mo re satisfys should be taken to avoid and treat it. . 2 The sources/generators of nutrition counteract Developed and developing countries actually forsake closely the equal fargon of food (670 and 630 billion net tonnes, respectively). The difference is at what level in the food communicate chain the extravagance occurs. In developed countries, the highest vividness of go through is at the retail and consumer level in developing countries it occurs broadly at the post-harvest and processing level due to limitations in transit, storage and processing.Therefore, HK, as one of the intimately developed atomic number 18as in the world, its food waste generally comes from the retail and final cons umption stages. 3 In parliamentary procedure to come down or avoid food waste trenchantly, the take up way is to mark astir(predicate) the sources or generators of food waste. Because if we try best to avoid food waste or food loss from its sources, the other processes for trim down waste or loss during the pursuit stages kitty be avoided, so that we enkindle save capital and resources. The sources of food waste of different countries and regions are illustrated below. . 2. 1 The sources of food waste in Hong Kong The sources of food wase in Hong Kong elicit be divided into two parts, major source and other sources. Table 1 shows the different sources and their components and characteristics. The major source is domesticated or residential. According to the statistic of Friends of The Earth, domestic food waste accounts for 70% of all food waste produced in Hong Kong, with an marrow of 2,300 tonnes per day (Friends of The Earth, 2009). The movements for domestic food waste are various.For example, food is cheap or both(prenominal) batch may subscribe to the cerebration that when inviting others to dinner, they have to order more than enough so that they would not digest face. Table 1. 1 Sources of food waste in HK Amount of waste Source Major Components Characteristic ( gobs/day) Spoiled cooked food Supermarkets and deglutition stores Undes irable raw food Spoiled cooked food Excess cooked food Including avoidable and residential/Domestic Vegetables & fruits peelings inevitable drinkable Undes irable raw food 4 around are Avoidable 90 2,300Meat scraps Excess cooked food Vegetables & fruits peelings Restaurants and Beverage hotels Undes irable raw food Meat scraps Vegetables & fruits peelings Beverage Food attention Undes irable raw food Meat scraps Excess cooked food Beverage Schools Vegetables & fruits peelings Meat scraps Avoidable are edible or edible before spoilage/damage) Unavoidable are inedible food veridical analogous vege table peels, bones, etc. unavoidable Including avoidable and 41 unavoidable Including avoidable and 900 unavoidable Including avoidable and 964 The major source is domestic or residential.According to the statistic of Friends of The Earth, domestic food waste accounts for 70% of all food waste produced in Hong Kong, with an measurement of 2,300 tonnes per day (Friends of The Earth, 2009). The reasons for domestic food waste are various. For example, food is cheap or some mickle may hold the idea that when inviting others to dinner, they have to order more than enough so that they would not lose face. The other sources are supermarkets and stores, food diligence and schools. The food industry consists of food chains, Chinese restaurants, hotels, bakeries, supermarkets, markets, food producers and so on.The industry produces 900 tonnes of food waste per day (Friends of The Earth, 2009). And schools generate 15,000 tonnes of food waste per yr. Meanwhile, food waste in Hong Kong st ick out be marooned into two kinds at source, they are 5 non- recyclable kind which includes glasses, tinfoil, cling film, carton boxes, plastic bottles, aluminum passels and tin tail assemblys, and recyclable kind, including meat, bones, bread, rice and noodles, vegetable, fruit and egg shells ( shapeure 2). soma. 1. 2 Separation of food waste at source (EPD, 2011) 1. 2. 2 The sources of food waste in oversea countries/regionsIn Australia, the food waste mainly comes from household or residential with an summate of close to 3 million tonnes per yr. Approximately 20% of food forget b e thrown away afterward its purchase in Australia In European Union, food waste are from households, supermarkets, restaurants and the food supply chain. Over 50% of edible and healthy food in EU is wasted each twelvemonth and the amount is 89 million tonnes per year. 6 Fig. 1. 3 Sources of food waste fir cereals, by region (Agree, 2011) distant the developed countries, food waste in developin g countries is generated at begin levels. physique 3 further identified the source level of food waste. From it, we empennage compute that in the developed countries like Europe and North America, virtually 60% of the food waste in cereal grain products occurs at consumption stage. Conversely, in the developing regions, like South Asia and sub-Saharan Africa, more than 60% of food waste 1. 3 The situation in Hong Kong and oversea countries 1. 3. 1 The situation in Hong Kong According to the statistic of EPD, in Hong Kong, approximately 3,584 tonnes food waste are produced eitherday, accounting for a third of all solid waste in Hong Kong.One third of them originates from 7 commercial and industry (C&I) sector, and the be comes from households. So households produce enceinter amount of food waste in Hong Kong. The peck of food waste from C&I sectors has increases more than doubly in the last decade, from 400 tonnes in 2002 to 1,056 tonnes in 2011 (Figure 4). Also, we disco unt see from Fig. 2 that supermarket dispose 29 tonnes edible food everyday. Fig. 1. 4 introductory food waste situation in HK (EPD, 2012) Figure 5 futher illustrates a serious issue in Hong Kong.About 3,200 tonnes of food are move to landfill every day, which equals to the mental object of 126 double buses, and the live for deal with food waste is more than 2 million per day. Whats more, if the rate continues to increase, the landfills in Hong Kong could reach crownworka urban center in 2013. Therefore, the situation of food waste in Hong Kong is not agreeable and the loads of Hong Kongs landfill are too heavy. either psyche in Hong Kong should realize this sever situation and try best to understate food waste in passing(a) life. 8 Fig. 1. The situation of food waste in Hong Kong (Hong Kong Stories, 2011) General trend of food waste in Hong Kong is illustrated in Figure 6. In Figure 6, Line 1 re ease uped commercial and industrial food waste, Line 2 represented domestic f ood waste and Line 3 represented municipal solid waste. From the prefigure below, we roll in the hay conclude that in Hong Kong, the intensity of domestic food waste has been abase in the past 10 years, while the commercial and industrial food waste has kept going up significantly and accounted for 30% of municipal solid waste in 2009, which is 20% more than that in 1999.The rising rate is really a serious problem and more attention should be paid in order to take food waste and the stress of landfill. 1 2 3 Fig. 1. 6 mass of municipal solid waste in Hong Kong (FoE, 2010) 9 The reasons why the amount of food waste is pretty bounteous and why it becomes a disgusting issue are listed below ? Many diners have more food on the plate than they can eat. According to putting kilobyteers works go over only 13 percent of responders can finish everything in their plates and or so 87 percent of them always left some food behind, 44 percent of these respondents say that they fr equently left over 30 percent or more.Especially, at buffets and all- you-can-eat sushi or hot pot restaurants, patrons can be tempted to pile too a great deal on their plates. ? Disposing is cheaper than using or re- using. For example, the unsold vegetable and fruit exit be dumped everyday even some of them are still fresh in the neighboring day, because the labour hail of picking is higher than the benefit of selling. 1. 3. 2 Food waste situation in oversea countries and regions ? Global Fig. 1. 7 Global food waste (PWC, 2012) 10In Global, unspoilt like the percentage of food waste in Hong Kong, one third of the food is wasted or discarded. Food waste in modify countries is as high as in developing countries, but in developing countries more than 40% of the food losses occur at post harvest and processing levels, while in industrialized countries, more than 40% of the food losses occur at retail and consumer levels.. Figure 8 shows that the per capita food loss in Europe an d North-America is 280-300 kg/year.In sub-Saharan Africa and South/Southeast Asia it is 120-one hundred seventy kg/year. The gibe per capita production of edible parts of food for human consumption is, in Europe and North-America, well-nigh 900 kg/year and, in sub-Saharan Africa and South/Southeast Asia, 460 kg/year (Jenny Gustavsson, 2011). Fig. 1. 8 Food waste in different regions (Jenny Gustavsson, 2011) ? Korea Korea has a very short history (less than 10 years) for food waste recycle by its own way. In Korea, the percentage of food waste which is independently assembleed is over 80%.Although the preaching techniques are advanced and over 80% of tranquil food waste is carrying to feedstuff and transform, the demand of the products is low in the whole society and the product situation is difficult. Nowadays , Korea has reconsidered its cycle organisation to construct a rising and sustainable structure. ? Taiwan 11 The food waste cycle engineering science in Taiwan is withal relatively mature with an eight-year history. Now Taiwan recycles an amount of food waste resembling to the volume of waste processed daily in two 900-tonne incineration plants.The food waste which accounts for 75% of total food waste hive away is born-a pull together into pig feed and 24% food waste is composted. The rest 1% is treated for other uses. ? U. S. In the U. S. , more than 34 million tonnes of food waste was generated in 2010 (U. S. Environmental Protection Agency, 2012). Food makes up the largest percentage of waste going into municipal landfills and combusted for energy recovery in the U. S. (Fig. 9). Fig. 1. 9 Food waste in the U. S. (U. S. Environmental Protection Agency, 2012) ? AustraliaIn Australia, the amount of food waste discarded per year is about 3 million tonnes and 95% of compostable items are food waste (Australia Institute, 2005). The food waste production change magnitude by 0. 5kg/w in 2007 compared to that in 2004 (3. 7kg/w). Sydney, the c ity with the larest population in 12 Australia, generates a high content of food waste in their general bins with close to 50%. Another study is found to test the cost of food waste in Australia. Australia wastes more than $5. 2 one million million million in food a year (Penny Pryor, 2011).This is quite a fortune of money and it suggests that the situation of food waste in Australia is too serious. The study concludes that t he biggest and most successful motivator to reducing food waste in Australia is saving money. Fig. 1. 10 Cost of food waste in Australia (Penny Pryor, 2011) ? Europe Excluding agriethnical food waste and fish discards, about 90 million tonnes of food is wasted yearbookly or clxxx kg per capita per year in Europe. It has been projected that if no action is taken, the amount of food waste in Europe will reach 126 mill around tonnes by 2020. 2 Finding 2. 1 Case study of HK 13 2. 1. Minimization approaches for food waste in Hong Kong There are many another( prenominal) approaches are proposed for the minimization of Food waste in Hong Kong. But most of them are proposed by self-imposed organization. And a general guideline for reduction and management of food waste for food service institutions are proposed by Greener Action Fig 2. 1 The guideline for food waste reduction and management from Greener Action And other approaches or organizations for reduction of food waste include Food Bank Feeding Hong Kong is the only food confide in Hong Kong dedicated to redistributing lavishness food to peck in need.By providing a bridge between the food industry and the hungry of Hong Kong, they provide a solution that simultaneously cuts food waste and feeds those most in need. Fig 2. 2 The mission of Feeding Hong Kong from the web aim of Feed Hong Kong 14 Food backer at any rate, Food Angel is a food rescue and assistant plan which religious service to reduce the contemporaries of food waste in Hong Kong. They link up food producers and charitable organizations in local communities to secure efficient food provision to the underprivileged. Food recycle Sche me Food cycle Scheme is a pilot food appealingness program operated by CTU Education introduction Ltd.The shunning is design to collect and process unsold fresh food from market and make delicious vegetarian tiffin which offers to unemployed trainees in procreation centre at lower price. It can save over 30,000 kg of wasted food yearly. Foodlink Foundation Limited is a registered non-profit organization which is aim to fight hunger and poverty by minimizing food wastage. The organization collects surplus and donated food from various hotels and F&B outlets and delivers it to shelters and to the needy, thereby generating a sustainable food- cycle dodge. The Foodlink operation is as follows Fig 2. 3 The Foodlink operation from FoodlinkThe voluntary organizations also launched several activities to enhance public awareness of reduction of food waste, lik e the ? Save Food Day on Wednesday? proposed by Greeners Action and ? graze Less decompose Less? proposed by Friends of the Earth. 15 Fig 2. 4 The poster of Save Food Day on Wednesday from Save Greeners Action Fig 2. 5 The photo from the web target of Friends of the Earth implementation These actions are right-hand to reduce the contemporaries of food waste, but there is no plastered figure of the reduction amount of food waste by these actions, and without the support of government, the achievement is limited. 16 2. . 2 Reuse/recycle approached of food waste in Hong Kong Kowloon bay Pilot converting Plant To gather experience and instruction on compendium of source separated food waste and the lotion of biological technology to recycle food waste in Hong Kong, the Environmental Protection Department developed the Pilot Composting Plant (KBPCP) at the Kowloon bay decamp recycle Centre (KBWRC) in mid-2008. Implementation The total interference capacity of the KBPCP is 500 tonnes of food waste feedstock per year and about light speed tonnes of compost product will be produced. Fig 2. 6 manipulation Process of KBPCP from website of EPDFood bodge cycle Partnership Scheme EPD launched the ? Food have cycle Partnership Scheme together with commercial & industrial (C&I) sectors in 2009 to promote good food waste management practice and to gain experience on food waste source separation and recycle. Implementation During the operation of the ? Food run out Recycling Partnership Scheme, 17 participants practised food waste source separation and placed the separated food waste in the designated entreaty bins provided by EPD at the assign collecting points for collectio n by EPD to the KBPCP for recycling.EPD was responsible for brushing the line of battle bins. At present, the participants of the precis already increase to 70. Fig 2. 7 Poster of Food extravagance Recycling Partnership Scheme from website of EPD radical flub interference F acilities The Environmental Protection Department (EPD) has decided to develop the Organic have Treatment Facilities (OWTF) which will be developed in two phase. The OWTF will adopt biological technologies composting and anaerobiotic digestion to stabilize the constitutive(a) waste and plication it into compost and biogas for recovery.The biogas produced in each phase of the OWTF could be used as renewable energy. A site search to locate suitable sites for the OWTF was completed. The proposed sites for the first phase and second phase of the OWTF are located at Siu Ho Wan of North Lantau and Shaling at North govern respectively. 18 Fig 2. 8 Artists Impression of the Organic Waste Treatment Facilities from website of EPD Implementation The total daily treatment capacity of OWTF is 400-500 tonnes of organic waste per day, and about 28 million kWh of surplus electricality can be supplied to the billet grid per year.The first phase of the OWTF may be accomplished in 2 or 3 ye ars, it can treat 200 tonnes of organic waste (mostly food waste) per day. 19 Fig 2. 9 The process of anaerobic digestion from website of EPD galvanizing Composter Some of the leftovers in commercial & industrial sectors are now eliminated in situ by electrical composter proposed by EPD. Food waste is putted into a automatic digester through and through fermentation and other processes to duty tour most of it into water and vitamin C dioxide within one day. And the residue will be sent to landfill.Implementation The composter can reduce the volume of food waste sent to landfill in some extent, but there is not certain info for the reduction volume as the composter can be purchased from private producer. 20 Fig 2. 10 The electrical composterGomixer from Hong Kong chocking on food waste Food Waste Recycling Projects in Housing Estates Environment and Conservation Fund (ECF) has allocated $50 million as subsidy and has launched a funding project, ? Food Waste Recycling Projects i n Housing Estates? , to boost the separated collection and recycling of food waste from households in July 2011.Implementation 11 estates were given funding support in the first phase with a total allocation of about $9 million. The participating estates have received subsidies to undertake on-the-spot(prenominal) treatment of source separated food waste and to encourage households to reduce food waste. And it is estimated that about 45 additional estates could be covered in the second phase. Besides, EPD has also commissioned the Hong Kong Productivity Council (HKPC) to operate a help-desk service for the electric potential caparison estate applicants and those participating food waste separation, collection and recycling government departments.The services include ? assisting in identification of a suitable site for installing the food waste treatment facility within the housing estate prior to formal application ? providing superior and technical advices to potential appli cants or participating government departments during planning and, implementation stages and ? selecting evaluation of performance, forcefulness and outcomes. 21 Fig 2. 11 The poster of Food Waste Recycling Projects in Housing Estates from website of help-desk service for food waste recycling project in housing estateFood waste recycling technology-Bokashi Greeners Action introduced the food waste recycling technology-Bokashi from New Zealand in 2010, this technology can help people dispose their food waste at kinfolk. Implementation More than 170 households has bought this food waste recycling system, and some pilot projects have been launched in schools and residential area in these two years. 22 Fig 2. 12 The poster of Bokashi from website of Greeners Action Individual recycling company Green report is a recycling company in Yeun Long which collects used school lunch boxes and separates and recycles both the food waste and plastic container.Generally, they can recycle about 8 00 thousands of school lunch boxes every day, which can reduce the food waste in some extent. Fig 2. 13 The heading from we bsite of Green Idea Kowloon Biotechnology Ltd is a recycling company using the food waste to produce feedstuff. It can recycle about 50 tons every day to produce different kind of feedstuff. Hong Kong Organic Waste Recycling Center is a company which can offer a series of recycling service for organic waste. They use the advanced technology combing the experiences from local expert and oversea countries to provide a help in recycling of food waste in Hong Kong. 23 Fig 2. 4 The heading from website of HKOWRC 2. 1. 3 Case of minimization and recycling of food waste in schools 2. 1. 3. 1 The situation of food waste in schools Solid waste is divided into some 60 categories at present, of which the ? dine wares make of plastic/poly- foam? covers basically all types of disposable food and drink containers and cutter. In 2007, the volume of such waste we disposed of amounted to about 199 tonnes per day. Disposable food containers are usually made of non-degradable materials that will persist in in earth forever and pollute the environment, which increases the difficulty of recycling of food waste. . 1. 3. 2 The objective of Green eat scheme To reduce the generation of food waste and protect our environment, schools can help by draught up and adopting a suitable green lunch policy ground on the principle of ? Reduc ing Pollution and Minimizing Wastage?. 2. 1. 3. 3 Analysis of meal army in schools Meal arrangements in schools can be mainly divided into two types by the containers they used reusable or disposable containers. recyclable containers mean those are robust and durable enough for repeated dry wash and reuse.Meals served in reusable containers may be portioned either on-site or off-site, namely, Central/On-Site Portioning and Off-site Portioning. Central/On-Site Portioning Cooked food is delivered by lunch suppliers to schools in bulk, and then re- heated and portioned in-situ for scattering to students. 24 Fig 2. 15 Central/On-Site Portioning from Green Lunch rule of thumb Off-Site Portioning Cooked food is prepared and portioned at the kitchens of lunch suppliers and delivered to schools in lunch boxes according to the amount ordered. Fig 2. 16 Off-Site Portioning from Green Lunch Guideline . 1. 3. 4 Proposal for profound/on-site portioning in schools The key/on-site portioning is better than off-site portioning in many aspects. Therefore, schools are proposed to applied central/on-site portioning in order to reduce pollution and minimize wastage. The benefits of central/on-site portioning in schools include 25 ? All dine wares used including trays, dishes, bowls, chopsticks, knives and forks, etc. are washable and reusable. Basically, no disposable containers and cutlery are used, which increases the potential of recycling of food waste.The amount of food portioned can be flexibly adjusted on request by students, which can reduce the potential of generation of left over by student. And the volume of lunch supplied can be adjusted according to the leftover generated, which reduce the food waste and wastage considerably. According to teachers and students, eating at canteens is much more joyful and exciting than in classrooms, providing a unique social body process for students. ? ? Fig 2. 17 Photo from Green Lunch Guideline 2. 1. 3. 5 Implementationan example of school of central/on-site portioning St.Edwards Catholic Primary School is a successful example applying central/on-site portioning. The school spent almost a year for the arrangement of central/on-site portioning the preparation works include the selection of proper place for central/on-site portioning and the lunch supplier, and communication with the students parents. by and by the application of central/on-site portioning, the volume of food waste has been reduced and most of them can be recycled. Besides, the food waste separation and collection processes enhance the environmental awareness of students, and the 26 isposable lunchbox is not used for lunch anymore. Fig 2. 18 The situation of central/on-site portioning in St. Edwards Catholic Primary School from Green Lunch Guideline 2. 1. 4 Conclusion of strategies in HK The EPD has proposed several schemes for the reuse or recycling of food waste in new-made years, including strategies of collection and recycling facilities. Therefore, we may augur that the increasing volume of food waste will be turn into useful product or renewable energy by impressive separation.But for the strategy of minimization of food waste, most of them are proposed by voluntary organization without the governmental help. 2. 2 Minimization and strategies in oversea countries 2. 2. 1 New Zealand The government supports and subsidizes households to reuse/recycle the food waste on-site. Non-edible food waste is regularly composted either through a collection service, with home composting or with a turn farm. A survey of households in 2007showed that 79% shop in a way to prevent food wastage, 63% carry out home composting and 10% have a worm farm. And one 27 f the ways to prevent food wastage for supermarkets and grocery stores is donating the food to the voluntary organizations, like Food not Bombs which uses their discarded food to feed people at film nights and markets. Kai to Compost is a food waste collection scheme for restaurants and businesses. The scheme collects food waste from restaurants and takes it to the support Earth plant at the Southern Landfill, where the material is mixed with green waste and used to produce compost. It was initially a trial scheme with government funding but is now a user pays scheme involving 50 businesses.Up until the end of 2006, the Council had salt away 456 tonnes of food waste. Fig 2. 19 Kai to Compost collection truck 2. 2. 2 Korea Korea government has forbidden direct landfill of the food wastes in 2005 and has paid much effort to build up the collection system and reuse/recycling facilities for food waste a. The reuse/recycling methods of food waste Separated collection method of food wastes at source 28 b. Dry Feedstuff Production c. Wet Feedstuff Production 29 d. Compost e. anaerobiotic Digestion Facility 30 Besides, Separated disposal of food waste is now legally mandatory.The waste collectors can refuse to collect the food trash or fine the dumper if the trash was not separated well. Through this comprehensive food wastes reduction plan and pecuniary support for installing food wastes recycling facility, the recycling rate of food waste is already up to 94% in 2005, from 45. 1% in 2002. And in Seoul, the collecting rate of food waste is up to vitamin C% in 2008. For the reduction of food waste, Seoul is about to let a trial run of large automatic receptacles that weigh the amount of food refuse deposited into them by each household and charges accordingly.Fig 2. 20 P ay-by-volume reinvigorated Q system for food waste 31 And the dumping of waste water generated by the processing of leftover food into the sea will be criminalize from 2013, according to the Ministry of Land, Transport, and Maritime affairs. The Ministry of Environment take leaveed to focus on the biogas plant which can turn the waste water into clean fuel in recent years. 2. 2. 3 Taiwan Since the fiscal year 2001, the EPA has been subsidizing the local townsfolk, county and city governments to establish their kitchen waste collection and recycling programs.In 2007, the kitchen waste recycling program has been incorporated into EPAs 2007-2012 Public Development chopine-General Waste Resource Recycling procession Program, in order to achieve proper treatment of all collected kitchen waste and to complement the ? Zero Waste? policy. The schemes for reuse or recycling of food waste include 1 Education and Promotion of Kitchen Waste Recycling Program Promote Green Eating Habits K itchen Waste Reduction drive Train kitchen waste recycling education seed instructors, and conduct on-the-job training for implementation organizations responsible personnel ? ? ?Work with schools, communities and environmental groups to conduct education, promotion, demonstration and training activities ? Prepare promotional brochures and handbooks to teach residents how to conduct kitchen waste sorting, collection and reuse ? ? Promote kitchen waste recycling on the radio, channel TV and news media Establish kitchen waste recycling webpages on central, county and city governments websites. 2 Establish Kitchen Waste Collection and Transportation placement ? Implement kitchen waste collection and transportation from households, schools, military bases and change by reversalional facilities 32 ?Modifications or purchases of drivel trucks for use in kitchen waste recycling, and purchases of kitchen waste recycling buckets ? ? Design collection zones, routes, transportation modes, and develop collection goals Establish temporary storage sites for collected kitchen waste, purchase transfer mac hinery and cleaning equipment ? Organize demonstration of a better-performing local government program, improve collection system and man-power input. 3 Establish modes of kitchen waste reuse ? Reuse of kitchen waste as pig feed after high temperature sterilization, or use as organic fertilizer after composting Inspect pig farms permitted to use recycled kitchen waste as feed to ensure proper feed sterilization and pig immunization ? Establish regional kitchen waste reuse factories/sites, such as high temperature sterilization facilities, composting sites, anaerobic digesters etc. ? ? Transport kitchen waste to manure and compost manufacturers to produce organic fertilizers Enhance the quality and technologies of the compost produced by local governments composting plants ? Provide inducing assistance and subsidies to private sector to encourage establishment of kitche n waste recycling and reuse facilities. 4 Develop markets for recycled kitchen waste products ? ? ? Establish long-term quality and total entropy for recycled kitchen waste Develop and evaluate safety inspection and tests for kitchen waste recycling and reuse products Develop and evaluate other feasible kitchen waste reuse options, such as turning into feedstuff or adopt anaerobic fermentation ? Work with Council of Agriculture and other local governments agriculture satisfactory authorities or associations to jointly promote kitchen waste reuse means. 33 Fig 2. 21 Compost Plant in TaiwanBesides, in order to continue the kitchen waste recycling efforts and assist the local governments in establishing modify kitchen waste reuse system, the following kitchen waste daily collection and reuse goals have been set between 2007 and 2012 Table 2. 1 kitchen waste daily collection and reuse goals Implementation At present, all 319 local town and township governments nationwide are impleme nting the kitchen waste recycling program. Through the feature efforts of EPA and local governments, the recycling rate of food waste is up to 36% in 2008 and 1977 tonnes of kitchen waste in Taiwan is recycled every day in 2009.Of the methods used to treat food waste, about 75% undergoes steam treatment to make pig feed, while 24% enters composting systems and 1% undergoes other processes, like incineration. 2. 2. 4 Case of The East Bay Municipal Utility District 34 The East Bay Municipal Utility District (EBMUD) of the San Francisco Bay Area has done a great job in converting food waste to methane gas and later to energy. The East Bay Municipal Utility Districts food waste energy project turns magnitude of food waste to energy through completely indispensable process. The eco informal method helps people convert their food waste to methane gas.EMBUD utilize the natural process like the Muckbuster to turn the raw food waste to clean energy. Muckbuster is an anaerobic digester fro m a green firm called the SeaB and turns deserted food items into clean energy. The container like system has the capability to recycle half a ton of food waste to generate the amount of energy required to run 150 computers. Muckbuster is outfitted with advanced technologies to derive methane from food waste through a biological process. The methane is later flowed through a heat and power system to produce electricity. Fig 2. 22 Muckbuster Anaerobic Digester from EcofriendBesides, the East Bay Municipal Utility District (EBMUD) collects and carries the pumpkin waste into its plants to produce energy. Every year in the U. S. , after the Halloween, heaps of pumpkins will move to the landfalls. This food waste is also recycled in EBMUD. The bacterium breakdown of the pumpkin waste along with other food waste will produce methane gases, which can be used to produce energy. 35 Fig 2. 23 pumpkin vine Power from Ecofriend The EBMUD was honored in 2007 with a grant of $50,000 by the EPA to encourage it develop new methods for digesting food waste to produce methane gas.The power produced by the EBMUD is used to run the regional waste water treatment plant. Fig 2. 24 EBMUDs example of turning waste into energy from Ecofriend 36 3 Critical Comparison 3. 1 Comparisons Mountains of food waste are a growing problem in many affluent countries. In Hong Kong, where people love to eat out, leftover food takes up much of the limited space in city landfills. So the judgement for Hong Kong recycle/reuse efficiency, technologies applied and strategies or policies conducted with overseas countries is very significant. 3. 1. Recycle/Reuse efficiency In fact, the data of food wastes generation per person per year in different countries are different. In New Zealand, about 258,886 tonnes of food waste goes to landfill each year. That works out to be 64kg per person per year. And thats just in New Zealand. At the meanwhile, its about 70kg per person per year of food waste in UK. And the US gets a number of approximately 82kg per person per year dumped into the landfill. In addition, there are several data about food waste by different country shown in Figure 3. 1. Figure 3. Food waste in different countries (kg/cap/year) In friendship of the population in HK, we can calculate the food wastes per person per year. According to the Census and Statistics Department in HK, the population of HK is 7,136,300 by 37 Mid-2012. By the investigation of EPD website, there is approximately 3,584 tonnes food waste produced in Hong Kong every day. And 3200 tonnes of food among it is sent to landfill each day. So 3584tonnes ? 1000kg /tonnes 7136300 3584tonnes ? 1000kg /tonnes 7136300 3200tonnes ? 1000kg /tonnes 7136300 3200tonnes ? 1000kg /tonnes 7136300 ? 365 = 197kg person /year, = 0. 0kg person /day of food waste generation and ? 365 = 164kg person /year , = 0. 45kg person /day of food waste dumped into landfill would be the results. From the comparison of the data above, we can conclude that HK is one of the largest generation areas of food waste in the world and that the most important and efficient way is reducing the food waste generation rather than recycling and reusing approaches which are also indispensable. We take that the residuals are totally recycled or reused in a sustainable way. The recycle/reuse efficiency would be like that 3584 ? 200 ? 100% = 11% 3584 That is to say the recycle/reuse efficiency of food waste in HK is 11% at most. Table 3. 1 Food waste recycling rates in developed Asian nations. Country Korea (2005) Japan (2007) Taiwan (2008) capital of Singapore (2008) Annual Food Waste Generated (ton) Daily Food Waste Generated 4,755,220 20,000,000 1,899,379 568,000 13,028 54,795 5,190 1,556 38 (ton/d) Annual Food waste recycled (ton) Daily Food waste recycled (ton/d) Food waste recycling rate, % Population (million) Daily Food Waste Generated per capita(kg/d/ca) Daily Food Waste Recycled per capita(kg/d/ca) 0. 6 0. 09 0. 08 0. 04 0. 27 0. 43 0. 23 0. 31 48 127 23 5 94 20 36 12 12,246 10,956 1,889 186 4,469,907 4,000,000 691374 68000 Whereas, Table 3. 1 generally illustrates the food waste recycling rates in developed Asian nations. With the expression of this figure and the assumed recycle/reuse efficiency in Hong Kong, we can get the idea that the combination of strategies implemented and the technologies applied processes better in a country order HK, Singapore, Japan, Taiwan, and Korea. 3. 1. Different campaigns and laws in approaches to food wastes in different countries 39 3. 1. 2. 1 Korea 1994 Start composting demonstration projects in 12 cities. 1995 Korean government established the ? Committee for the Management of Food Waste 1996 Kyonggi Province declares ? War against food waste? 1999 Food waste collection in Suwon City (Kyonggi Province) 2002 Establish a voluntary agreement for food waste reduction ( in conjunction with FIFA world cup) 2005 Direct land- woof of food waste has been banned 200 6 2,520 tons of lineage and food waste per day was dumped into the ocean 3. 1. 2. 2 Japan 2001 Food waste recycling law 2004 Regional food waste composting in Sendai 2006 Recycling of Organic Waste in Aya Town reached 20%, food-related business has to submit an annual report to report how the food waste is treated 2007 Revised of Food waste recycling law Co. 2007 7-11 parent company + Agri Gaia clay turn food waste into animal feedstock 3. 1. 2. Taiwan 2001 EPA starts food waste recycling in government departments 2003 Taipei starts food waste recycling policy 2006 Whole Taiwan (309 towns and townships) carried out food waste collection and recycling 2007 2007-2012 Public Development Program-General Waste Resource Recycling Promotion Program 3. 1. 2. 4 Singapore 2003 Food from the Heart started the Bread distribution Programme 2007 IUT + NEA + Veolia collect food waste from markets 3. 1. 2. 5 Hong Kong 40 2009 Food Waste Recycling Partnership Scheme 2011 Food Waste Recycling Proj ects in Housing EstatesFrom the campaigns and laws mentioned above, we can deduce that Korea, Japan and Taiwan start to recycle or reuse the food waste in 1995, 2001, 2001 respectively. They start to recycle and reuse the food wastes much earlier than that in Hong Kong although there is a tremendous amount of food waste generating every day. sound in 2005, Direct land-filling of food waste was already banned, however, up to now, there is still a large amount of food waste sent to the landfill for dumping. Actually, a few years ago, the approach in compost was already conducted in Korea, Japan and Taiwan. Whereas, Hong Kong uses this technology just in recent years. . 1. 3 Technologies applied in food waste Nowadays most of collected food waste has been recycled to compost and animal feedstuff. A very sensitive part is used in anaerobic digestion. Table 3. 2. Different technologies used in different nations Country Feedstock Composting Anaerobic digestion Others Korea(2005) Japan(2 007) Taiwan(2007) Singapore(2008) 54. 4% 50. 0% 77. 6% 75. 5% 29. 7% 45. 0% 21. 8% 2. 4% 1. 4% 5. 0% N. A. 22. 0% 14. 4% N. A. 0. 6% 0. 1% Same situation appears in Korea, Japan and Taiwan that they recycle food waste to feed the livestock at first step and to compost secondly.But the technologies applied in Singapore may be a little different that the food waste is delivered to feed livestock and then delivered to the anaerobic lagoon. The three different technologies in recycling or reusing the food waste are judged by the following illustrations. 41 3. 1. 3. 1 Food waste composting Composting is one means of reducing the problems associated with landfills, incinerators, and other food waste disposal methods. There are as many different ways to compost as there are people who compost There are four basic ingredients needed to compostOxygen, Water, Carbon (Brown material such as timberland chips, brown leaves, or shredded newspaper), and Nitrogen (Green wet waste such as grass cl ippings, or fruit and vegetable scraps from your kitchen). If you have these ingredients, you can compost at your home, office, or school. Figure 3. 2 shows how food waste flows in a composting way. Figure 3. 2 Food waste flowchart in composting way from http//www. wastereduction. unc. edu/CampusRecycling/FoodWasteComposting. aspx For food wastes compost, there are some benefits and deficiencies in it. Benefits of Compost 42 ? ? Enriches soil, helping retain wet and suppress plant diseases and pests. Reduces the need for chemical fertilizers. Encourages the production of beneficial bacteria and fungi that break down organic matter to create humus, a rich nutrient-filled material. ? ? Reduces methane emissions from landfills and lowers your carbon footprint. Compost is a marketable product Besides the illustration above, households, businesses and institutions may save money by composting items such as food scraps while sending less waste to landfills and incinerators.In addition, yo u can even get the payback from selling compost. Deficiency of Compost If food waste is not incorporated into the soil it loses nitrogen to the atmosphere and may retain less nitrogen than the compost. Composting requires a time commitment to properly manage the windrows to produce quality compost. Specialized windrow turners may be required, but they can come at with a high price tag. The composting site and storage for finished product can use a spacious area of land. Money and time may be spent advertising, packaging, and managing the business. 3. 1. 3. 2 Feed animalsThe feeding of food waste or refuse to swine and other livestock animals is a common practice throughout the world and is often concentrated around metropolitan centers. Food plate waste (formerly referred to as garbage) may be fed to other livestock species, but has most often been used as a source of feed for swine. broad(prenominal) disposal costs and fees encourage the feeding of food/plate waste. The advanta ges in applying this measure are listed below a) It can eliminate a large amount of food waste. 43 b) It can save the feeding cost by replacing the fodder. c) Elevate the rates of using resources . 1. 3. 3 Anaerobic digestion If 50 percent of the food waste generated each year in the U. S. was anaerobically digested, enough electricity would be generated to power 2. 5 million homes for a year. With the passing of Halloween, millions of pounds of pumpkins have turned from seasona l decorations to trash destined for compost heaps or landfills. The story is a little different in Oakland, California. Thanks to the pioneering work of the East Bay Municipal Utility District (EBMUD), discarded pumpkins and other food waste are used as a source of renewable electricity. How is that possible?First, waste haulers gather post-consumer food waste and deliver it to EBMUDs anaerobic digesters. Inside these giant tanks, bacteria break down the food waste and release methane gas as a byproduct. EBM UD captures this gas and uses it to generate electricity in onsite generators. A ton of food waste provides about 367 m3 of gas, and digesting 100 tons of food wastes five days a week can generate enough electricity to power 1,000 homes. Once the food waste has been digested, the remaining solids make an fantabulous natural fertilizer, so they can be used to get next years pumpkin crop started.Figure 2. 9 shows how it works. Figure 3. 4. shows how the food waste is recycled or reused in a anaerobic digested way. Firstly, the food waste from industrial, commercial and schools will be collected. And then it will be sent into Centralized Anaerobic Digestion. After the anaerobic digestion for food waste, it will be converted into two valuable products, renewable ener gy and fertilizer, which is used to supply electric power and in today reduce the GHGs from coal burning in the caloric power plant and amend soil respectively. 44 Figure 3. 4 Food waste flowchart in anaerobic digestion w ay.The merits for anaerobic digestion are listed below a) Generated biogas can be recycled and utilized. It can be used directly as a fuel or for biogas power generation. b) c) Digestion residues (ie, residual sludge) can be used as primary organic fertilizer raw materials. The concentrated sludge dewatering filtrate can be used as plant fertilizer or aquaculture utilization. d) e) f) The odor is easy to control and hard-fought to escape. Compared with the compost product, organics can be more completely and equally composted. The treatment effect is stable and suitable for engineering applications. 3. . 4 Barrie rs in food waste recycle/reuse in Hong Kong There is a large capacity of food waste generation in Hong Kong as above mentioned. Only a certain small part is disposed in a Green way and the other part is generally dumped into the landfill. This will not only have an adverse effect on our environment but also cause the resources waste. Why 45 does the situation in HK act lik e this? First of all, the amount of food waste generation in HK is larger and larger while EPD is only concentrating in the technologies of food waste recycle/reuse rather than reducing food wastes from the sources.The leave out of education in food wastes may be the second reason. Hong Kong is a multi-cultural city with numerous restaurants. However, the public lacks the concept of saving food. In neighbouring countries like Korea and Taiwan, the average food waste amount per person is 20-30% less. Thirdly, the number of effective policies in Hong Kong introduced to the food waste manage ment is lower than some other countries. A project in Taiwan called ? 2007-2012 Public Development Program-General Waste Resource Recycling Promotion Program? was conducted to achieve proper treatment of all collected food waste and to complement the ?Zero Waste? policy. In Guangzhou, ? Interests bind system? ( ) was introduced that residents who were taking an active part in the garbage classific ation, organizers and sanitation workers would earn a certain amount of money according to the benefits of recycled resources. So it really makes a connection between households and garbage classification and encourages people to be more motivated in protect our environment. Fourthly, the recent sharp increase of premium and rent are pull the development o f recycled food wastes. In 2001, EPD promotes a broadcast called Environment and Conservation Fund ?Community Waste Recovery Projects? which is attracted by lots of communities to participate. However, the sharp cost in maintaining the projects almost results in the end of the plans lifetime. Fifthly, the technologies in recycling and reusing the food wastes are not developed very well and many programmes are just on the way. In Japan, TM Corporation invented ERS (Environmental Recycling System) that is a High-Speed Composting (Fermentation & Drying) System which can convert a batch of organic matter or waste into value-added pro ducts such as fertilizer or animal feed within 2-24 hours.While in Hong Kong, it usually takes half a month in converting the food wastes 46 to composts. In Sweden, 35% of the recycled food is devoted to be fermented with methane to generate electric power. Last but not least, the majority approaches in recycling the food waste in Hong Kong is composting. The government also encourages the privates to convert the food wastes to composts. However, the composts offered by the privates were hard to be found the markets. Many people who lost their capital in compost investment ever are not confident with this technology.In addition, Food waste is always mixed with general waste in the kitchen e. g. plastics, knife, cans etc and food waste barrels is usually too heavy to move. And for most of the hotels and restaurants, additional storage space is needed for food waste. 3. 2 Recommendations The problem of food waste is not only about technical issues such as waste treatment beyond that, cultural themes like the idea of consumption and human relationship with nature are involved too.Moreover, the solution to it should not be restricted to individual action government policy and even cultural change should also dissipation a significant role. From two frameworks in reducing food waste in UK and US as references, the suggestions for the solutions elaborated below are in a same order which are shown in Figure 3. 5 and 3. 6. 47 Figure 3. 5 The food waste pyramid from http//www. companyshop. ltd. uk/corporate-social-responsibility/disposal-route. aspx Figure 3. The food waste pyramid from US. http//www. epa. gov/foodrecovery/The government or the organizations faced with food waste should make some public service advertisements about the impacts on the environment, create a website to educate public in food waste reduction and even can organize some activities to enhance the peoples comprehension of the food waste knowledge and starving in other countries. In addition, the society should set up a correct concept for the food consumption. 48 An organization called Food Angel in Hong Kong is working excellent in reducing the food waste from source. It collects food from all segments of food industry which is usually abandoned due to some reasons.Then they prepare healthy nutritional meal boxes in their own professional kitchen and finally deliver the meal boxes to individuals and families in need. The government should encourage and pay back the organizations like Food Angel who can reduce the food waste from sources. The government should make several effective policies on the food waste. System of rewards and penalties to the charity organizations and commercial companies associated with the food waste should be set up. And more programme on reducing the food waste from sources should be carried out and encouraged to be conducted.In addition, new and high efficiency technologies should be made an effort to develop. Furthermore, due to the high co st including premium and the rent for food waste recycling, EPD should give a hand like increase the amount of subsidy to the committee to help them to turn the corner. Generally speaking, in consideration with the nowadays situation in HK, the experiences from Korea and Japan can be a good example to learn with. We deduce that the food waste recycled in Hong Kong should follow in this order 1) Feed animals 2)Used to compost 3)Deliver to the anaerobic lagoon.The reason for the first one is that the animals can have a good digestion with it and only generate manure rather than leachate or waste residuals. The reason for the second one is that proper compost may content the market and also reduce a certain amount of food waste to be dumped into landfill. The last reason is that after the anaerobic digestion itll generate electric power which can be used by residents and can also reduce the carbon dioxide from coal burning in Tsing Yi Power Station. In addition, new and high efficiency technologies should be made an effort to develop.To acquire best cost-efficiency and the lowest impact on the environment, the combination of 3 main technologies in nowadays should be conducted as well. To make the technologies run safely and 49 smoothly, food waste classification should also be in compact consideration. At the meanwhile, people who are authorized by EPD may have the right to ticket when they check the classification of the food waste. In the future, we may transform food waste into laundry detergent, plastic ingredients, and a military of everyday products, in a discovery that may ease storm on the citys bulging landfills.According to the research made by an environmental scientist at City University of Hong Kong, food waste can be transformed into bioenergy that can be used to generate heat and electricity, and at the same time reduce the volume of food waste destined for landfills by at least 50%. 4 Conclusion While our neighbor record book and Taiwan made an great achievement in the food waste problem, Hong Kong just started to focus on this kind of problem because of the full- load of landfills by 2018. The collection and recycling strategies applied in recent years may reduce the volume of food waste sent to landfill.But as Hong Kong is one of the largest generation areas of food waste in the world, it is still doubtful whether the recycling rate of food waste can catch up with the present increasing rate of food waste. Therefore, the government should pay more attention on the minimization of food waste and the cooperation with unofficial organization to reduce the generation of food waste in the future. With both the strategies of minimization and reuse/recycling, the food waste prob lems can be solved effectively in Hong Kong.