摘要
通过建立模拟河道生态修复中试工程,研究不同生境条件下,不同植物类型及河岸带类型下河流系统对水质净化效果。结果表明:建立浅滩,深潭交错的生境类型,努力恢复沉水植物和挺水植物植被,对原有的泥土堤岸进行生态修复,整个系统对水质净化效果良好,TN去除率为50%左右,24 h后去除率达到90%;TP去除率达到70%左右,24 h后去除率达到80%以上;NH+4-N去除率80%左右,24 h后去除率在85%以上。对重度污染的河水起一定的净化、稀释作用,减缓下游河流或湖泊的直接污染。
Through the establishment of demonstration projects of river ecological restoration,we study the effect of water quality purification under different habitats plants and riparian conditions. The result showed that the effect of water purification in the whole system was good,after the establishment of shallow and deep pools,plants and sediments restoration.The removal efficiencies for TN,TP,NH+4-N in that condition were about 50%,70%,80%,respectively,and that results changed to about 90%,80%,85% respectively after 24 h. It means that the system can clean heavily polluted river water,dilute the contamination,and avoid polluting Dianchi Lake directly.
出处
《环境工程》
CAS
CSCD
北大核心
2015年第S1期298-301,共4页
Environmental Engineering
关键词
河流
重污染
生态修复
去除率
urban river
heavy pollution
ecological restoration
removal rate
