雨水净化湿地的设计初探——以天目湖旅游度假区沙河湿地设计为例

雨水净化湿地属于人造湿地系统,其设计的目的是最大限度地去掉雨水径流中的污染物质。天目湖旅游度假区沙河水库上游存在多种水体污染来源,这些污染物质可通过雨水径流进入库区。沙河水库作为饮用水源保护地,有必要在上游湖泊滩地内建造雨水湿地,保护库区的水质。通过分析雨水湿地的设计因素及标准,提出适合基地条件的雨水湿地类型及其设计方法。

Design for Constructed Storm Water Wetlands Shahe Wetlands Design in Tianmu Lake Tourism Resort

Rain-fed wetland is artificially constructed wetland system designed to maximize the removal of pollutants from runoff of rain water via several mechanisms. A number of water pollution sources exist in the upstream of Shahe reservoir in Tianmu Lake tourism resort. All these pollutants can be brought into the reservoir by rain water runoff. Shahe reservoir works as a source for drink water, it needs to construct rain-fed wetlands in the upstream beaches of the lake to protect water quality and to improve landscape value. Elements and designing criteria for an artificial wetland system were analyzed, and appropriate approaches to wetland construction were identified.