河蟹养殖水体原位生态组合净化系统示范工程研究

Research of Demonstration Engineering of Crab Aquatic Water Water in Situ Eco-compositive Purifying Process

该文根据河蟹养殖面临的水环境问题,在高淳固城湖地区设计并运行一套原位生态净化系统,该工艺包括水体循环、增氧、浮岛滤床、水生植物及食底泥动物系统。监测结果表明:示范塘比对照塘的p H更为适合螃蟹生长,COD明显降低,DO明显增高,实施示范工程后蟹塘的排水次数明显减少,有效地削减了入湖污染负荷。

According to the problems that crab culture faces in the water environment field,an in situ eco-composi-tive process to treat crab aquatic water was designed and run,this process was made up of water circulation,aeration,filter bed,floating island,aquatic plants and animal feed system.Running the process to water from the Guchenglake,the results that gain from continuous running and analysis show that p H was more suitable for the growth ofcrabs,COD was significantly lower,and DO was higher,and the number of drainage of the crab pond was obviouslydecreased after the demonstration project,the process was able to reduce the pollution load into lake.