环境工程学报2018，Vol.12Issue(3)：975-984,10.DOI:10.12030/j.cjee.201709122
多元组合系统净化富营养化水体的示范工程
Demonstration project of eutrophic water purification by a multicomponent system
摘要
Abstract
Non-point source pollution from tea plantations in the upstream of West Lake caused severe eutrophication in the Longhong stream.Therefore,an in-stream treatment system combining biological purification technologies and engineering measures was devised to treat the water and to serve as a demonstration project for the purification of eutrophic landscape water bodies.Considering the characteristics of the stream channel,a treatment system combining an ecological corridor,bio-zeolite,and ecological floating beds,was used,which significantly improved the water quality.On the one hand,the multi-stage ecological corridor prolonged the flow path and prevented the formation of dead water zones and hydraulic short-circuiting.On the other hand,the bio-zeolite showed a physical interception effect,which also maintained long-term and stable removal of pollutants from the eutrophic waters by the biofilm formed on its surface.Moreover,the multi-layered three-dimensional ecological floating bed,which served as the carrier of ceramic particles and suspended elastic packing,ensured ecological restoration of the water body through the joint action of plants and microorganisms.Overall,the demonstration project exhibited good pollutants removal efficiencies of COD of 24％,TP of 46％,TN of 31％,NH4+-N of 24％,and NO3--N of 31％.Furthermore,a higher treatment efficiency was achieved in the summer than the winter.So,the project has a good application prospect.关键词
富营养化/生态浮床/生态廊道/生物沸石/工程示范Key words
eutrophication/ecological floating bed/ecological corridor/, bio-zeolite/engineering demonstration分类
资源环境引用本文复制引用
贾锐珂,王晓昌,宋佳..多元组合系统净化富营养化水体的示范工程[J].环境工程学报,2018,12(3):975-984,10.基金项目
国家水体污染控制与治理科技重大专项(2013ZX07310-001) （2013ZX07310-001）
