学术
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.通过中试研究,考察了该浮床对富营养化湖泊水体在动态条件下的净化效果.结果表明,水体交换时间为7d时TN、TP、高锰酸盐指数的去除率分别为53.8%、86.0%和35.4%.污染物的直接净化主体为人工介质和水生植物单元,但在生态浮床中引入河蚬增加水生动物单元,通过食物链的＂加环＂作用,提高了颗粒性有机物的可溶化和无机化（氨化）以及可生化性,改善了植物吸收以及人工介质单元生物膜中微生物的基质条件,促进微生物的生长和活性,提高了浮床的净化效果.[著者文摘]
文章出处:
《环境科学》-2007年28卷11期 -2448-2452页
文献标识码:
A
文章编号:
0250-3301（2007）11-2448-05
Characteristic of Combined Floating Bed Ecosystem for Water Purification Under Dynamic Condition
LI Xian-ning, SONG Hai-liang, ZHU Guang-can, LI Da-cheng, LU Xi-wu （Department of Environmental Science and Engineering, Southeast University, Nanjing 210096, China）
Abstract:
A new type of ecological floating bed was developed that combined hydrophyte, aquatic animal and biofilm. The dynamic pilot study on purification characteristic and mechanism of the floating bed for eutrophic was carried out. Result shows that the removal efficiencies of TN, TP and CODHn are 53.8%, 86.0% and 35.4% respectively under the water exchange period of 7 days. Main purification role is played by artificial medium and aquatic macrophyte in pollutants removal, but the Corbiculafluminea introduced to food chain of combined floating bed enhances the purification effect through the ways as follows： improving the resolvability, ammonifieation and biodegradability of paniculate organic matters, meliorating the substrate supply condition for absorption of plant and degradation of microorganism attached on artificial medium, hastening the growth and activity of microorganism.[著者文摘]
Key words:
eutrophication ; floating bed; food chain ; aquatic vegetable; aquatic animal; artificial media
基金资助:
国家“十五”重大科技专项项目（2002AA601011-03）;教育部留学回国人员科研启动基金项目.
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