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广西一臭水沟治理后获中国人居环境范例奖

2017-11-04 20:59  来源:新华社

  新华社南宁11月4日电(记者 覃星星)记者从广西壮族自治区住房和城乡建设厅了解到,广西南宁市那考河海绵城市建设项目入选中国人居环境范例奖。

  “那考”在壮语里的意思是美丽绿色的水田,但20多年来,这里一直都是一条污染严重的臭水沟。最严重的时候有40多个排污口直接向那考河排污,水质多为劣Ⅴ类。

  2015年,南宁市成为国家首批“海绵城市”试点城市。当年3月,那考河项目成为财政部PPP试点和住建部海绵城市试点示范项目。从2015年3月开工建设至2016年11月试运营,总投资约11.9亿元。那考河现在已经从一条臭水沟变成了生态休闲河,获得广大市民的一致好评。

  记者从自治区住房和城乡建设厅获悉,那考河项目改变传统做法,注重对河道自然生态功能的修复。采取“渗、滞、蓄、净、用、排”等海绵城市技术措施,在河道沿岸实施石砌挡墙驳岸、人工打桩垂直驳岸、生态缓坡驳岸等河道生态修复工程,配以建设下沉式绿地、植草沟、雨水湿地、生物滞留设施、净水梯田、湿塘等,对河道周边“客水”进行层层过滤和净化,降低汇水区域面源污染物对河道的污染,并对市政道路、建筑与小区、公共绿地等进行海绵化改造。

  通过不同种类海绵化措施的有效串联,那考河及周边流域8.9平方公里的区域被建成了一个雨水控制整体联动的大海绵体,达到了“生态治水”的目标。如今,那考河湿地公园绿树繁茂,鲜花绽放,景致优美怡人,吸引着各方游客纷至沓来。

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