FIELD INVESTIGATION ON THE FEASIBILITY OF LEACHATE RECIRCULATION IN CHENGDU MSW LANDFILL, CHINA
The paper presents a field investigation on the feasibility of recirculating concentrated leachate into the Chengdu landfill of municipal solid wastes. The field investigation included borehole investigation of the hydro-geological conditions and in situ simulation tests of leachate recirculation. Two kinds of facilities, I.e., open pits and vertical wells, were established to carry out the simulation tests. The borehole investigation revealed that the leachate level within the landfill was very high, being at a depth of 1～3m below the landfill surface. The results from the simulation tests indicated that the steady-state recharge capacity into the open pit and vertical well were 24 m3/d and 5 m3/d, respectively, and the hydraulic-conductivity of waste was calculated to be 6.3 ×10-6 m/s. The low recharge capacity was mainly attributed to the high leachate level. Preliminary numerical analyses demonstrated that a drawdown of leachate level will result in an increase in the recharge capacity.
leachate recirculation landfill field study leachate level open pits vertical wells
Ji-Wu LAN Tony Liang-Tong ZHAN Yun-Min CHEN Han KE Zhao LIU Guo-Qing LU
MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou, Ch North China Municipal Engineering Design and esearch Institute, Tianjin, China
国际会议
International Symposium on Geoenvironmental Engineering(国际环境岩土工程研讨会
杭州
英文
649-654
2009-09-08（万方平台首次上网日期，不代表论文的发表时间）