易腐性有机垃圾的产生与处理技术途径比较

我国城市垃圾以易腐性有机垃圾为主.目前有关管理部门提出逐步减少进入填埋场的易腐性有机垃圾量,因此,必须寻求其他填埋替代技术消纳易腐性有机垃圾物流.本文对几种常规技术方案进行了比较.认为应该根据非餐饮业和餐饮业易腐性有机垃圾各自的产生源特点,采取不同的处理方案;但目前这些替代技术用于处理易腐垃圾时均存在各自的缺陷.本文据此提出了相应的技术完善要求和配套管理政策建议.

Generation and treatment technologies of putrescible wastes

Municipal solid wastes in China are mainly composed of putrescible wastes, of which the majority is disposed of in landfill site. At present some local governments plan to reduce the quantity of biodegradable municipal wastes (BMW) into landfill sites, so firstly waste minimization is favorable for minimizing BMW to be treated, and then it is necessary to apply alternative technologies to divert those BMW away from landfill sites. Some general alternatives for BMW, including incineration, centralized composting, anaerobic digestion, process as animal feed and on site aerobic digestion, are evaluated according to their technical features, economic information and environmental acceptability. It is concluded that the putrescibles management should be conducted according to the generation sources of diverse putrescibles. There doesn't exist a technology that could be the optimal solution for putrescible wastes. Suggestions about technical improvements and management strategies are put forward for a more effective management of putrescibles.