地表水氮污染的生物修复

Bioremediation for nitrogen pollution of surface water

由于农业大量使用化肥及作物秸秆的不合理处理,使得地表水氮污染,造成富营养化.因水资源短缺,污水净化资源化势在必行.在污水净化技术中,生物修复具有原地降解清除污染物,修复时间短,操作简便,对周围环境影响小等优点.本文综述了生物修复技术中氧化塘、土地处理系统和生物浮床的研究进展,其机理在于通过植物光合作用对氮进行吸收利用,除氮脱磷,同时通过微生物的综合作用,其他一些污染物质也得到一定程度的净化.

With the overload application of chemical fertilizers,and the same time,the unreasonable treatments of crop straws,led to the nitrogen pollution for surface water,and caused the eutrophication.For shortage of fresh water resources,the sewage must be purified and recycled use.All the purified technological systems for sewage,the bioremediation had many strongpoints,for instances,in situ degradation and removal of pollutants,the shortage of remediation period,and easy operation,and few impacts on the surrounding environment.The paper reviewed the progress of oxidation ponds,land treatment system,and bio-floating bed technology,they not only to remove the nitrogen pollution by plants absorption,but also other pollutants were purified on a certain degree.