中国典型城市固体废物可降解有机碳含量的测定与研究

The Measurement and Research of Degradable Organic Carbon of Municipal Solid Waste in China

城市固体废物填埋处理产生的甲烷是一种重要的温室气体,城市固体废物中可降解有机碳(DOC)含量是计算其甲烷排放量的重要因子之一.1996年IPCC指南给出了不同可降解有机碳的公式和不同类型固体废物可降解有机碳缺省值.该缺省值主要来自发达国家的文献,不能完全适合中国的实际情况.选择武汉和沈阳作为我国南方和北方城市的代表,分别在其老城区、新建城区、综合市场、食品超市、垃圾填埋场等区域进行固体废物采样,经过化学分析得到代表城市干基和湿基固体废物的含水率、含碳量和可降解有机碳含量,并对其成分特征进行分析,得到中国城市固体废物可降解有机碳含量推荐值.

Methane generated from municipal solid waste treatment facility is one of major greenhouse gases （GHGs）, and the degradable organic carbon （DOC） is a very important parameter for calculating methane emission from landfills. IPCC 1996 Revised Guidance has given the formulae for calculating methane emission and DOC default values of various waste streams. These default values are mainly gotten from literatures of developed countries, and can＇t completely suit Chinese actual situation. Two typical cities respectively in north and south of China （Shenyang and Wuhan） were chosen as sampling places, and the municipal solid wastes generated from different areas, such as mixing areas, old town, newly developed areas, synthesis market, food supermarket and landfill site, etc. were collected and sampled. After chemical analysis, the water content, carbon content and degradable organic carbon of dry waste and fresh waste in typical cities were analyzed ; the characters of municipal solid waste and its contents were revealed. The DOC default values for calculating methane emission from municipal solid waste treatment in China were gotten and the results show important significance and value for estimating methane emission form municipal solid waste treatment in China.