source separation of food waste - turning waste into compost

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• A simple sorting process was introduced at the composting facility for the workers to pick up any non-food waste from the received food waste before loading it to the composting machine. This process is important to prevent damage to the composting machines and to ensure the quality of the compost. • Oil and grease traps with screen were established at the composting facility to avoid the food residues and the oil and grease generated during the sorting of the food waste from entering the drains. This prevented the bad odour caused by food residues and oil and grease trapped in the drain from reoccurring. • Follow-up awareness talks to the hawker centres were conducted to increase participation. • Simple sorting of food waste before loading into the machines • Cleaning after Operation • Composting facility at USJ1 8 • Grease Trap Installed at the Site
OPERATION OF THE FOOD WASTE SYSTEM Full scale operation of the food waste system was commenced after one month of trial run and after all the corrective measures had been implemented. The composting machines were able to treat a maximum of 500kg food wastes each day. The segregation of food waste at the hawker centres took place all day from the morning when the hawkers started to prepare the food. More food waste were generated throughout the day, mainly from the food residues left by the customers. The hawkers transferred the food waste to the communal bin whenever the individual bins were full. Since the operation of most of the participating hawker centres continued through the evening, the collection of food waste from the communal bin was only done early in the next morning, before operation of the centre started. The waste contractor emptied the communal bin from all participating hawker centres in one trip to save transportation cost and delivered the collected food waste to the composting facility at around 10.00am. Once the food waste arrived at the facility, the workers would drain excess water from the food waste and carry out simple sorting of the waste to pick up any non-food items before the waste were loaded into the composting machines. Sawdust was added to the composting process as bulking agent in order to improve the structure and the composting process. Approximately 1kg of saw dust was added to every 5kg of raw food waste. The machines processed the waste automatically under high temperature (60-70 degree Celsius) with the help of effective microorganisms added to the machine and transformed it into useful compost after 24-48 hours. As the compost quality after 48 hours was found to be better in terms of moisture content and maturity of operation, decision was made to process the waste for 24 hours only on Monday-Friday and process the food waste arriving on Saturday for additional 24 hours over Sunday when the hawker centres were not in operation. • Loading the waste into the Machine • Quality of compost produced 9
Page 1 and 2: SOURCE SEPARATION OF FOOD WASTE - T
Page 3 and 4: Table of Contents Abbreviations and
Page 5 and 6: Foreword Assalammualaikum and greet
Page 7 and 8: Background Municipal solid waste in
Page 9 and 10: The Project Design and Implementati
Page 11 and 12: PLANNING ESTABLISHING A TASKFORCE L
Page 13: IMPLEMENTATION TRIAL RUN A one-mont
Page 17 and 18: OUTREACH AND PROMOTIONAL ACTIVITIES
Page 19 and 20: QUESTIONNAIRE SURVEY A questionnair
Page 21 and 22: QUALITY OF THE COMPOST Samples of t
Page 23 and 24: Benefits, Challenges and Key Lesson
Page 25: Sustaining the Project MPSJ is dete

source separation of food waste - turning waste into compost

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