Science Target Conference Systems, Ajman 4th International Environment Conference 2016

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ASSESSMENT OF MIXING POTENTIAL OF SEWAGE SLUDGE, GREEN WASTE AND FOOD WASTE FOR CO-COMPOSTING
Maruf Mortula

Last modified: 2016-01-27

Abstract


The generation of large amount of solid waste is a big challenge for large cities in the developing countries. A major portion of this generated waste is organic in nature. The use of composting is very common for municipalities dealing with large quantities of organic waste. However, there are different types of organic waste produced in different operations within the municipalities. Instead of having separate composting facilities, working with the major types of organic waste for co-composting can add value. Sewage sludge and green waste are major sources of organic waste in many municipalities. The generation of food waste is also in significant amount. Currently, the compost facility within Sharjah Municipality (large city in a developing country) use sewage sludge and green waste as their raw material. There is no separate composting provision for food waste. The objective of the paper was to characterize different organic waste and assess the suitability of co-composting in Sharjah, UAE. Results indicated that sewage sludge, green waste and food waste had a carbon to nitrogen ratio of 7.48, 37 and 15.71 respectively. Mixing these wastes in the appropriate proportion can provide the basis for creating good compost. When it comes to maintaining a mixing proportion of these three different organic wastes, there are several combinations that can work. In addition green waste can be used a bulking agent for other types of organic waste. Combination of these three types of organic waste can be a quite viable co-composting option for Sharjah, UAE.