河流-地下水渗流系统对城市污水的净化作用及机理

The mechnaism and purification of a river-groundwater infiltration system for municipal sewage treatment

通过野外试验与理论分析 ,研究了河流 地下水渗流系统对城市污水的净化作用及机理 .结果表明 :河流 地下水渗流系统对城市污水的COD、重金属、氮等具有很好的净化作用 ,对COD的去除主要是好氧微生物降解 ,其次为厌氧微生物降解 ,重金属与挥发酚主要是土壤吸附作用 ,而氮的去除是好氧环境中的硝化作用与厌氧环境中的反硝化作用的联合作用的结果 。

Based on field test and theory analysis,that the mechanism and purification of a river\|groundwater infiltration system for municipal sewage treatment were studied.The results showed that the system can satisfactorily purify municipal sewage with COD,heavy metals and nitrogen.The mechanisms are mainly aerobic microbial degradation of COD,then was anaerobic microbial degradation(COD) adsorption heavy metals and phenoe,and nitrification\|denitrification(nitrogen).