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引用本文:李先宁,宋海亮,朱光灿,李大成,吕锡武.组合型浮床生态系统的构建及其改善湖泊水源地水质的效果.湖泊科学,2007,19(4):367-372. DOI:10.18307/2007.0403
LI Xianning,SONG Hailiang,ZHU Guangcan,LI Dacheng,LV Xiwu.Effect of combined floating bed ecosystem on water quality improvement in lake water source area. J. Lake Sci.2007,19(4):367-372. DOI:10.18307/2007.0403
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组合型浮床生态系统的构建及其改善湖泊水源地水质的效果
李先宁, 宋海亮, 朱光灿, 李大成, 吕锡武
东南大学环境科学与工程系, 南京 210096
摘要:
研究开发了一种由水生植物、水生动物及微生物膜构建的组合型浮床生态系统。在野外条件下, 考察了该浮床对富营养化湖泊水在静态条件下的净化效果。结果表明, 20d内TN、TP的去除率分别为83.7%和90.7%, 透明度也有大幅提高。而且, 组合型浮床系统对有机物尤其是难降解有机物的去除能力较强, 在25d内, 对r-BHC、HE、DDE、DDD、DDT的去除率分别为25.2%、63.8%、42.1%、71.6%和27.6%, 氯苯、阿特拉津的去除率达55.9%和72.1%。水珊动物的代谢活动提高了有机物的生物可降解性和氮磷的植物可利用性。该新型浮床可用于水源地水质改善、污水净化生态工程、富营养水体的生态恢复等。
关键词:  浮床  水生植物  水生动物  微生物膜  难降解有机物
DOI:10.18307/2007.0403
分类号:
基金项目:国家"十五"重大科技专项项目(2002AA601011);教育部留学回国人员科研启动基金共同资助
Effect of combined floating bed ecosystem on water quality improvement in lake water source area
LI Xianning, SONG Hailiang, ZHU Guangcan, LI Dacheng, LV Xiwu
Department of Environmental Science and Engineering, Southeast University, Nanjing 210096, P. R. China
Abstract:
A new type of ecological floating bed is developed that combined hydrophyte, aquatic animal and biofilm together. The purification effect of the floating bed for eutrophic lake water under static condition was tested. Result shows that the removal efficiency of TN and TP is 83.7% and 90.7% respectively during 20 days, and the transparency is also heightened sharply. Additionally, the floating bed shows better removal effect on non-degradative organic matters. During 25 days, the removal efficiency of r-BHC, HE, DDE, DDD, DDT can reach 25.2%, 63.8%, 42.1% , 71.6% and 27.6% separately. Furthermore, for benzene chloride and atraizine, up to 55.9% and 72.1% respectively. The biodegradability of non-degradative organic matters and availability of N & P for hydrophyte are all enhanced by aquatic animal's metabolism. The new type of ecological floating bed may be used to drinking water source quality improvement, ecological engineering for wastewater puriiication, and ecological restoration of eutrophic lakes.
Key words:  Floating bed  hydrophyte  aquatic animal  biofilm  non-degradative organic matter
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