【摘要】 在文献[1]回灌技术影响因素的基础上进一步以土灌注、垃圾柱、土壤一垃圾混合柱模拟了填埋场土壤覆盖层、垃圾填埋层、填埋场混合填埋层的情况，探求出工程设计所需的垃圾填埋场沙滩水回灌净化能力的有关参数．更多还原

【Abstract】 In the present paper, various factors influcing the effectiveness of backirrigation technique on the treatment of leachate were investigated, usinglaboratory lysimeters of soil columns, garbage columns and soil-garbagecombined columns to simulate the behavior of the soil layers, garbage layers andsoil-garbage mixture layers of practical landfill. The parameters applicable forthe design of back irrigation technique on the treatment of leachate weredetermined. It was found that over 98% COD of the leachate could be removed bythe soil columns when the weight ratio of soil and sand was kept at 7: 1 and theinitial COD values were ranged 1 800~30 000mg.L-1. When the simulating garbagecolumns were used and the COD and BOD of the leachate were in the range of7 000~30 000 and 5 000~20 000mg.L-1, over 95% COD and 96% BOD could beremoved, respectively. The removal efficiencies of COD and BOD in soil- garbagecolumns were found to be higher than 98 % and 99%, respectively, with the similarinitial COD and BOD of the leachate showed above.更多还原