ORGANIC WASTE TREATMENT USING ANAEROBIC DIGESTION METHOD. L/O/G/O

Transcription

1 ORGANIC WASTE TREATMENT USING ANAEROBIC DIGESTION METHOD L/O/G/O

2 MALAYSIA WASTE COMPOSITION 1.60% 1.50% 0.60% 1.40% 2.40% 2.90% Sisa makanan 2.40% 5.80% Plastik 12.40% 44.10% Kertas Lampin pakai buang Sisa kebun 9.40% 14.20% Kaca

3 MALAYSIA WASTE COMPOSITION

4 PROBLEM STATEMENTS The increasing tonnage of the municipal solid waste has led to major issues such pollution, increase waste management stress and costly By looking at the Malaysia s waste composition, the biggest waste portion is organic waste (~40%) Proper organic waste management will give significant impact on the Municipal Solid Waste Management

5 OBJECTIVES Our objectives are: To manage organic waste by using anaerobic digestion To generate electricity by using biogas To utilize organic fertilizer generated from anaerobic digestion for green farming practice

6 ANAEROBIC DIGESTION Anaerobic digestion (AD) is the breakdown of organic material by micro-organisms in the absence of oxygen. Examples: Sewage sludge from wastewater treatment plants Municipal solid wastes (MSW) Industrial wastewaters Agricultural wastes Animal manure Crops waste

7 ANAEROBIC DIGESTION

8 BIOGAS Biogas contains methane (CH 4 ) 60% and carbon dioxide (CO 2 ) 40% in average and small percentage of other gases and some contaminants.

9 BIOGAS TO HEAT ENERGY

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11 BIOGAS TO ELECTRICAL ENERGY Each cubic meter (m 3 ) of biogas contains the equivalent of 6 kwh of calorific energy. However, when we convert biogas to electricity, in a biogas powered electric generator, we get about 2 kwh of useable electricity, the rest turns into heat which can also be used for heating applications. 2 kwh is enough energy to power a 100 W light bulb for 20 hours or a 2000W hair dryer for 1 hour.

12 BIOGAS REDUCE GREEN HOUSE GASSEOUS Methane has a greenhouse gas (GHG) heating factor 21 times higher than CO 2. Combustion of biogas converts methane into CO 2 and reduces the GHG impact by over 20 times. Biogas energy is considered carbon neutral, since carbon emitted by its combustion comes from carbon fixed by plants (natural carbon cycle).

13 BIOGAS REDUCE GREEN HOUSE GASSEOUS

14 DIGESTATE Digestate is the by-product organic wastes digestion. Digestate could be a solid or liquid material Digestate contains: high proportion of mineral nitrogen (N) in the form of ammonium Other macro- and microelements necessary for plant growth. Organic fractions of digestate can contribute to soil organic matter (SOM)

15 TUBA ISLAND 3km away from South Langkawi Island next to Dayang Bunting Island Consist of 6 villages Total resident of ~1800 people The first collection for solid waste management started on 11 th June 2014.

16 MODUS OPERANDI

17 CONVEYOR Previously the sorting process of collected waste was done manually by the staff at the sorting area. For the efficiency of the sorting process, the plant was installed with conveyer machine. The workforce used for sorting process was reduced from 6 to 3 persons. Sorting process is faster and more convenient

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19 ANAEROBIC DIGESTER Digestion Process: Anaerobic Mesophilic Hydrolysis, Acidification, Acetogenesis and Methanogenesis Optimal temperature of 35 C System Design: Hi-solid batch continuous digestion process Capacity : 500 kg per day

20 ANAEROBIC DIGESTER SPECIFICATIONS DESCRIPTIONS CAPACITY 500KG/DAY DIMENSION 7M(L) X 2M(W) X 2.45(H) TOTAL LAND REQUIRED 13.5M X 11.5M BIOGAS PRODUCTION 50M 3 /DAY FERTILIZER 500L/DAY

21 Gas Tank Feeder Hose Switch Board EcoFAST

22 Ecofast machine function is to shred food waste into smaller portion before feeding into anaerobic digester Large and hard food waste like bones and seeds are shredded After shredding, food waste will be pumped into anaerobic digester via feeder hose

23 Methane gas outlet Organic Fertilizer outlet

24 BIOGAS OUTLET

25 FOOD WASTE

26 The functions or this machines is to shred green waste into smaller size before being fed into the Cowtec machine. The green waste are shredded to finer portion to expedite the process of anaerobic digestion. Green waste (grass) inlet Green waste (wood) inlet

27 OR FOOD WASTE SHREDDED GRASS FEEDING PROCESS (Manual) FEEDING PROCESS (EcoFast)

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29 BIOGAS : METHANE LIQUID FERTILIZER COMPOST

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31 ORGANIC FARMING

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33 33 With every 1 kg of 3R items or food waste, the villagers will get 200 grams worth of vegetables

34 STOVE LIGHT ELECTRIC GENERATOR

35 COOKING GAS AEROBIC DIGESTION CATALYST

36 STEP 1 STEP 2 STEP 3 STEP 4 SHREDDED GRASS + RICE HUSK + FOOD WASTE LIQUID FERTILIZER SHREDDED GRASS LIQUID FERTILIZER

37 37 RECYCLABLES

38 GREEN RESOURCE RECOVERY SDN. BHD. (GRRSB) Subsidiary of Environment Idaman

39 COMPACT FOOD WASTE DIGESTER AFTER 2 DAYS AFTER 7 DAYS

40 AFTER 14 DAYS

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