生物栅对绥宁河河水修复效果的研究

Remediation of Water Quality in the Suining River by Biological Grid

以植物、微生物为生态要素构建生物栅,处理景观水体。使用生物栅技术对上海市绥宁河富营养化段水体和稀释后的黑臭河水进行处理。生物栅处理绥宁河富营养化河水,120 h后TP的去除率在61.5%~68.7%;NH4+-N的去除率在46.0%~92.9%;TN的去除率在18.5%~90.9%;COD去除率为63.3%~74.7%。生物栅处理绥宁河富营养化河水中120 h内对NH4+-N和TN的去除率不高,继续处理到240 h时,NH4+-N和TN的去除率分别为93.0%和90.9%,绥宁河河水综合污染指数由最初的36.0下降到6.2。生物栅处理稀释后的黑臭河水120 h后TP、NH4+-N、TN、COD的去除率分别为94.9%、83.4%、77.5%和15.2%,水体综合污染指数由16.3下降到2.9。

A new technique,constructed with hydrophytes and compound carriers as main components,microbes and hydrophytes as main ecological elements,was used to treat polluted water from the Suining River in Shanghai. After the eutrophic water from the Suining River was processed by biological grid for 120 h,the reduction rate of TP,NH4+-N,TN and COD were 61.5%～68.7%,46.0%~92.9%,18.5%～90.9% and 63.3%～74.7%,respectively,showing fairly low reduction rates of NH4+-N and TN.But when it came to 240 h,the reduction rate of...