A restoration-promoting integrated floating bed and its experimental performance in eutrophication remediation

查看全文 作　　者：Yiming [1,2]Guo;Yunguo [1,2]Liu;Guangming [1,2]Zeng;Xinjiang [1,2]Hu;Xin [1,2]Li;Dawei [1,2]Huang;Yunqin [1,2]Liu;Yicheng [1,2]Yin

机构地区：[1]College of Environmental Science and Engineering, Hunan University;[2]Key Laboratory of Environmental Biology and Pollution Control (Hunan University),Ministry of Education

出　　处：《Journal of Environmental Sciences》索引2014年第26卷第5期,共9页

基　　金：supported by the National Natural Science Foundation of China(No.41271332;the Natural Science Foundation of Hunan Province,China(No.11JJ2031) 摘　　要：Numerous studies on eutrophication remediation have mainly focused on purifying water first, then restoring submerged macrophytes. A restoration-promoting integrated floating bed(RPIFB) was designed to combine the processes of water purification and macrophyte restoration simultaneously. Two outdoor experiments were conducted to evaluate the ecological functions of the RPIFB. Trial 1 was conducted to compare the eutrophication purification among floating bed, gradual-submerging bed(GSB) and RPIFB technologies. The results illustrated that RPIFB has the best purification capacity. Removal efficiencies of RPIFB for TN, TP, NH+ 4-N, NO-3-N, CODCr, Chlorophyll-a and turbidity were 74.45%, 98.31%, 74.71%, 88.81%, 71.42%, 90.17% and 85%, respectively. In trial 2, influences of depth of GSB and photic area in RPIFB on biota were investigated. When the depth of GSB decreased and the photic area of RPIFB grew, the height of Potamogeton crispus Linn. increased, but the biomass of Canna indica Linn. was reduced. The mortalities of Misgurnus anguillicaudatus and Bellamya aeruginosa in each group were all less than 7%. All results indicated that when the RPIFB was embedded into the eutrophic water, the regime shift from phytoplankton-dominated to macrophyte-dominated state could be promoted. Thus, the RPIFB is a promising remediation technology for eutrophication and submerged macrophyte restoration. 关键词：富营养化治理实验性能浮床水体富营养化整治沉水植物植物恢复水生植物

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A restoration-promoting integrated floating bed and its experimental performance in eutrophication remediation

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