20 0 2年 8月从国家环保总局有关领导处获悉 ,目前国内城市污水处理率只有 3 4.3 % ,“城市河道成了纳污沟 ,大量生活污水直接使城市水环境恶化。”南京玄武湖、武汉东湖、济南大明湖、太湖和滇池 ,前三者已成为劣五类水质 ,后两者严重富营养化。在全国重点监测的 3 3 8个城市 It was learned from relevant leaders of the State Environmental Protection Administration in August 2002 that at present, the domestic urban sewage treatment rate is only 33.3%, “the urban river has become a pollutant discharge ditch, and a large amount of domestic sewage directly aggravates the urban water environment.” Xuanwu Lake, Wuhan East Lake, Jinan Daming Lake, Taihu Lake and Dianchi Lake, the first three have become inferior five water quality, the latter two serious eutrophication. Among the 38 cities monitored in the country