上海住宅小区水景观建设探讨

Discussion on Construction of Waterscape in Residential Areas of Shanghai City

针对目前上海住宅小区水景观中存在的问题,分析了水景观建设和运行的关键因素,如补水水源的选择、水质标准的依据、池深的设计、池底是否设置防渗层、换水周期及水质净化方法的选择等。指出住宅小区内建设水景观工程应具有选择性,可在有条件的、水资源丰富的小区建设水景观,以充分利用天然的水系湖泊;水景观的补充水源应优先利用雨水,推广应用浅层地下水,其水质应达到《地表水环境质量标准》中的Ⅳ、Ⅴ类水质标准;需根据实际情况选择合适的水质净化方法,并在池底设置防渗层。

To the problem of waterscape system in residential areas of Shanghai City, the key factors of waterscape construction and operation were analyzed. These key factors include the selection of make-up water source, the water quality standard, the design of pond depth, the impermeable layer in pond bottom, the water change period and the method of water purification. It is pointed that the waterscape system should be constructed in the area with abundant water resource to utilize fully the natural lake water. The rainwater should be preferentially used for make-up water of waterscape system, and the utilization of shallow underground water is recommended. The water quality should reach class Ⅳ and Ⅴ criteria specified in Surface Water Environmental Quality Standards. The appropriate method of the water purification should be selected on the basis of the actual condition, and the impermeable layer should be laid on pond bottom.