再生水回用于水体的富营养化及其景观修复措施

Eutrophication of water body by using recycled water and its landscape restoration measures

随着北京、天津等中国大城市淡水资源的紧缺加剧,再生水已成为城市景观用水的重要的水源之一。以再生水为补水水源的城市水体比天然河流、湖泊更容易发生富营养化问题。因此,保障水体水质达到相应的功能要求,研究水质净化与维持的方法和技术具有十分重要的现实意义。采用景观修复手段防治水体富营养化具有生态可持续性的优点,而且维护成本较低,并能创造充满野趣的生态景观,越来越得到人们的重视。本文探讨了人工湿地技术、水体系统优化设计、水生生物调控技术等景观修复措施的应用,从源头补水处理,景观水体系统合理设计,景观水质、效果控制和维护三个方面入手,改善再生水回用的富营养化状况,重塑自然生态的水体环境。

As Beijing,Tianjin and other Chinese big cities are short of fresh water,the recycled water has become an important water source for the city landscape.Eutrophication is more likely to happen in landscape using recycled water than in the natural rivers and lakes.Therefore,it is significant to study the methods and technologies of water purification and maintenance to guarantee water quality meeting the corresponding functional requirements.Using the landscape restoration measures for preventing and controlling eutrophication has gained popularity since it has the advantages of ecological sustainability,low maintenance cost,and can create the ecological landscape filled with delight.This paper discussed the application of constructed wetlands,water system design and biomanipulation from the aspects of source water disposal,water system design and water quality control and maintenance,preventing the eutrophication and rebuilding natural and ecological water environment.