Study on Removal Efficiencies of pollutant from Constructed Wetland in Aquiculture Waste Water around Poyang Lake

摘要

Poyang Lake is the largest fresh water lake in China, but the water quality has deteriorated gradually in recent years due to rapid population growth, urbanization, industrialization and extensive agriculture. As the most important aquiculture basement of Jiangxi Province, aquiculture waste water is the main source of agricultural diffuse pollution. The organic pollution in aquicultural waste water originates mainly from exceeding fish food, excrement and secretion of fish, they are reflected as increasing in water quality indexes such as TSS, CODCr, BOD5, TN and TP. This thesis studied the removal efficiencies of constructed wetland in typical aquiculture waste water around Poyang Lake. The results indicate that constructed wetland has high removal abilities in organic load.