蚯蚓与污水土地处理试验研究

Research on The Earthworms and the Land Treatment of Sewage

本研究将蚯蚓——土壤床作为污水处理的一种试验装置。试验对蚯蚓的耐水能力、蚯蚓负荷、污水浓度以及渗滤速度等因素对污水处理效果的影响进行了初步研究。结果表明：采用合理的间歇运行方式蚯蚓养殖污水土地处理是可行的，系统的去除率随渗滤速度的增加而降低；蚯蚓的存在能提高土壤对氮的吸附能力。

In this research,the earthworms soil bed was regarded as an experiment equipment of sewage disposal.The water endurance of earthworms,earthworms loading,sewage concentration and percolation velocity which affected treatment efficiency were investigated.The results showed that the system of sewage land treatment by earthworms was possible by taking reasonable intermittent operation;The removal rate would be decreased by raising percolation velocity;The adsorptive power of NH 4 in the process of land treatment and N removal rate in process of sewage disposal would be risen if earthworms exist in this system.