Design of Constructed Wetland in Xinxue River Estuary into Nansi Lake in Eastern Line of South-to-North Water Transfer Project
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Based on severe river and lake water pollution and retrogradation of lakeshore wetland ecosystem in Nansi Lake in eastern line of South-to-North Water Transfer Project,the constructed wetland project in Xinxue River estuary for the treatment of polluted river water was designed,which consists of ecological retention pond and multiple-stage surface flow constructed wetlands.The operation results show that the main indexes of the wetland effluent reach the class Ⅲ criteria in the Environmental Quality Standards for Surface Water,which ensures the water quality of Nansi Lake inlet.The ecological function of lakeshore wetland is restored through measures of ecological rehabilitation,and the economic benefit is attained to a certain extent.