摘要
利用复合生态滤床、底泥生物氧化、水体生物修复和河道生态恢复等技术，对上海漕溪河富营养水体进行治理。结果表明，在每隔7～10d间歇性流量300～400m^3／次的污水补水进量下，通过生物治理，消除了水体富营养和黑臭现象，从每个污水补给周期开始，3～4d后COD、NH3-N、TP除去率分别达到50％、40％和55％以上，水体清澈见底。从2005年3～5月，河道生物多样性逐步增加，先后出现枝角类、桡足类动物和鱼类。表明对于已截污的城市半封闭河道，利用浸没式复合生态滤床对污水进行预处理，在此基础上，通过底泥生物氧化、水体增氧、河道生态恢复等措施，进行生物治理，可取得良好治理效果。本研究为城市半封闭河道的治理和养护提供了一套切实可行的方法。
Muhifunction ecological filter bed, biological oxidation of the sediment, bioremediation of water and ecological restoration of river were combined and applied to control the pollution of Caoxi river, a eutrophic or black-odor water in Shanghai. The result showed that the phenomenon of black-odor or eutrophic water in the fiver were eliminated, under the hydraulic load of intermittent sewage supply as high as 300～400 m^3/time every 7～10 days. The color of the water was clear to the bottom, where the removal rates of COD, NH3-N,TP are above 50% , 40% and 55% respectively in 3～4 days from the day of sewage supply. It indicated that the biodiversity of river was also recovered that the amount of cladocera, copepoda and fishes came out by steady operation from March to May 2005. This research showed that the combined process including biological oxidation of the sediment, aeration, and bioremediation of the water based on biological pretreatment by immersed muhifunction ecological filter bed could effectively eliminate the pollution. This process would be a feasible technology to control the pollution of half-closed city river.
出处
《环境污染治理技术与设备》
CSCD
北大核心
2006年第9期27-30,共4页
Techniques and Equipment for Environmental Pollution Control
基金
国家"863"高技术研究发展计划资助项目(2003AA601020)
关键词
城市半封闭河道
生物修复
生物氧化
底泥
复合生态滤床
half-closed city river
bioremediation
biological oxidation
river sediment
multifunction ecological filter bed
