State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China.
J Environ Sci (China). 2010;22(7):1116-22. doi: 10.1016/s1001-0742(09)60226-6.
Approximately 7000 m3 of aged refuse (AR) with a placement of over eight years was excavated from Shanghai Refuse Landfill, the largest landfill in China, and used for the construction of a two-stage bioreactor (AR biofilter) media for the biological treatment of 100 m3 of refuse landfill leachate. It was found that over 64% of COD, 96.9%-99.8% of NH4+ -N, and 95.8%-99.8% of BOD5 could be removed by the AR biofilter, when the leachate with initial COD, BOD5, and NH4+ -N concentrations were 986-4128 mg/L, 264-959 mg/L, and 538-1583 mg/L, respectively. The corresponding concentrations in the effluent were reduced to below 300-400 mg/L, 2-12 mg/L, and 10-20 mg/L, respectively. The effluent was clear and pale yellow with suspended solid below 150 mg/L and color below 150 Pt/Co degree. Meanwhile, the total nitrogen removal was only 49%-63%, indicating a relative poor denitrification capacity of AR biofilter. The effluent pH was neutral and the population of Escherichia coli was less than 10(-1) CFU/mL. Hence, it was considered that the demonstration project can work well for the effective treatment of leachate.
从中国最大的垃圾填埋场上海老港垃圾填埋场中挖掘出了约 7000 立方米、堆放时间超过八年的陈腐垃圾（AR），用于建造两段式生物反应器（AR 生物滤池）的介质，以处理 100 立方米的垃圾填埋场渗滤液。结果发现，当渗滤液的初始 COD、BOD5 和 NH4+-N 浓度分别为 986-4128mg/L、264-959mg/L 和 538-1583mg/L 时，AR 生物滤池可以去除超过 64%的 COD、96.9%-99.8%的 NH4+-N 和 95.8%-99.8%的 BOD5，而相应的出水中这些物质的浓度分别降低到 300-400mg/L、2-12mg/L 和 10-20mg/L 以下。出水清澈，呈淡黄色，悬浮物低于 150mg/L，颜色低于 150Pt/Co 度。同时，总氮去除率仅为 49%-63%，表明 AR 生物滤池的反硝化能力相对较差。出水的 pH 值为中性，大肠杆菌的数量少于 10(-1)CFU/mL。因此，认为该示范工程可以很好地有效处理渗滤液。
