人工湿地与生物膜法协同修复养殖水体研究

Cooperative Bioremediation of Aquaculture Water by Constructed Wetland and Biofilms

构建了人工湿地和生物膜法协同修复养殖水体系统,研究了人工湿地和生物膜法协同修复养殖水体的效果和微生物机理.结果表明:水温为14.5~22.6℃,锦鲤密度为1尾/20 L和田螺密度为1个/5 L时,稳定的修复系统内浊度、DO、NH_(4)^(+)-N质量浓度、NO_(3)^(-)N质量浓度、COD值分别为2.94~25.3 NTU、5.04~6.12 mg/L、0.87~9.72 mg/L、0.36~13.5 mg/L、6.91~25.6 mg/L,鱼类存活率为100%,并实现了92 d不换水.构建人工湿地和生物膜法协同修复养殖水体是可行且稳定的.

A cooperative bioremediation of aquiculture water by constructed wetlands and biofilms was developed,and the bioremedy efficiency and microorganism mechanism were investigated.The results indicated that the turbidity,DO,NH_(4)^(+)-N,NO_(3)^(-)-N,COD concentrations remained 2.94~25.3 NTU,5.04~6.12 mg/L,0.87~9.72 mg/L,0.36~13.5 mg/L,6.91~25.6 mg/L when water temperature was 14.5~22.6℃,the koi and vivipara concentration was 1/20 L and 1/5 L,the survival rate of fish was 100%,and the water is not changed for 92 d.It shows that the bioremedy system of constructed wetlands and biofilms is feasible and stable.