两种蚯蚓生态滤床对垃圾渗滤液处理的对比试验

Comparison of Experiments for Landfill Leachate Treatment with Two Species Earthworms of E.Foetida and B.Parvus in Ecological Biofilter

将抗逆性较强的赤子爱胜蚓和微小双胸蚓引入生态滤床,使蚯蚓在微生物的协同作用下分别对垃圾渗滤液进行净化处理。结果表明在净化垃圾渗滤液中的COD方面,微小双胸蚓的处理效果明显强于赤子爱胜蚓;在净化垃圾渗滤液中的NH3一N方面和改善垃圾渗滤液的pH方面,两种蚯蚓的处理效果基本相同。根据两种蚯蚓处理垃圾渗滤液过程中对胁迫生态环境的适应能力的监测结果来看,微小双胸蚓明显强于赤子爱胜蚓。根据对两种蚯蚓对重金属富集效果的检测结果来看,两种蚯蚓对于不同重金属的富集能力存在差异。

In this experiment, eisenia foetida and bimastus parvuse were added in ecological filter bed to purify the landfill leachate respectively with the microorganism via synergistic effect. The resuhs show that bimastus parvuse has more obvious effect on purifying COD than eiseniafoetida. While both eiseniafoetida and bimastus parvuse have same effect on purifying NH3-N. Furthermore, according to adaptability of environmental stress, bimastus parvuse performs more strongly. Therefore, 2 kinds of earthworm have different effect on accumulating heavy metal.