生态浮床与人工湿地净水效果比较小试研究  

Comparison of Water Purification on Eco-floating Bed and Constructed Wetland

作　　者：李华[1] 周扬[1] 张秋卓[1] 徐亚同[1] 秦蓉[1] 

机构地区：[1]华东师范大学上海市城市化生态过程与生态恢复重点实验室,200062

出　　处：《环境科学与技术》2011年第3期58-61,89,共5页Environmental Science & Technology

基　　金：上海市科委重大项目"临港新城环湖绿带生态优化关键技术研究与示范"(09DZ1200901);上海市重大科技专项"生态农业区水环境生态修复技术集成研究与示范"(08dz1900407);国家科技支撑计划子课题(2007BAK27B05-3)

摘　　要：生态浮床和人工湿地都是近年来在国内外采用的用于净化水质的生态修复的方法,该文章主要研究了静态条件以及不同水力负荷下,种植黄菖蒲的生态浮床与人工湿地的净水效果。试验期间进水高锰酸盐指数、TN、TP、NH4+-N平均质量浓度分别为4.74 mg/L、2.92mg/L、0.26 mg/L、1.77 mg/L。结果表明,在静态条件下黄菖蒲生态浮床对污染水体具有较好的去除效果,去除率分别为高锰酸盐指数:37.6%、TN:89.9%、TP:65.5%,对于NH4+-N的处理效果相同条件下人工湿地则优于生态浮床,去除率为92.4%。3种水力负荷0.035 m3/(m2.d)、0.06 m3/(m2.d)、0.12 m3/(m2.d)相比较,0.035 m3/(m2.d)水力负荷下,生态浮床对TP、NH4+-N、TN、高锰酸盐指数的去除率较好,分别为87.4%、66.8%、77.1%、21.16%。人工湿地则没有明显的变化趋势。通过对生态浮床和人工湿地这两种方法的净化水质的效果进行对比分析,以期在净化河道湖泊水体方面得到很好的应用。In recent years,ecological floating beds and constructed wetlands are used at home and abroad for ecological rehabilitation of water quality.Effectiveness of iris ecological floating bed and constructed wetland in the condition of static and different hydraulic loadings about water purification were studied.Average concentrations of CODMn,TN,TP,NH4＋-N in influent were 4.74mg/L,2.92mg/L,0.26mg/L and 1.77mg/L respectively during the experiment.Results showed that in static trial period,the efficiency of iris eco-floating bed purifying system was satisfactory,with average removal rates of CODMn 37.6%,TN 89.9%,TP 65.5%.For treatment effect of NH4＋-N wetlands was better than the floating bed,with removal rate of 92.4%.Among three hydraulic loadings of 0.035m3/（m2·d）,0.06m3/（m2·d） and 0.12m3/（m2·d）,removal rates of ecological floating bed at hydraulic loading of 0.035m3/（m2·d） are better than others about TP,NH4＋-N,TN and CODMn,with rate of 87.4%,66.8%,77.1% and 21.16% respectively.There are no clear trends for wetlands.The comparison of effect of ecological floating beds and constructed wetland would be well applied to cleaning rivers and lakes.

关 键 词：生态浮床 人工湿地 生态修复 

分 类 号：X703.1[环境科学与工程—环境工程]