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嘉兴四年“三级跳”背后的治水全发力

2017-09-16 17:21:43   央广网

昨天上午,蓝天白云下,杭州塘秀洲段河内美人蕉、再力花、荷花等水生植物郁郁葱葱,生态漂浮景观带依水相连,走在岸边干净整洁的绿道上,秋风吹过,顿感阵阵清爽。治水、景观一举两得,成为路经此地居民的共同感受。

“今年底之前,杭州塘秀洲段北岸的亲水平台有望建成,届时市民可以在栈道闲庭信步,近距离感受河内花海,感受秀洲治水新成效。”秀洲区治水办黄炼锋说。据悉,亲水平台由秀洲区治水办和秀洲国家高新区共同打造,规划9月初已经基本完成。秀洲的这张靓丽名片也将越擦越亮。

杭州塘秀洲段东起杭州塘大桥,西至马泾港,全长8公里,平均河宽70米,平均水深3米。监测数据显示,2013年水质还是劣五类,2014年达到五类,2015年达到四类,到2016年以及今年上半年,水质稳定在三类。

水质四年“三级跳”,杭州塘秀洲段是秀洲成功治水的缩影,也是嘉兴近年水质改善的一个标本。

一条河流的四年“三级跳”

杭州塘水流自西向东由杭州经桐乡进入秀洲,再进入嘉兴市区到南湖,是嘉兴城区的主要进水口。南湖的水质好不好,可以说秀洲段是关键。

但是,杭州塘河道全程较长,河道流经区域情况复杂,污染来源多样,既有农业农田养殖污染,也有城市集镇和工业企业污染。此外,杭州塘为嘉杭航运主线,河道内运输船舶众多,沿线码头分布密集。2013年水质显示为劣五类。

从污染源排查情况看,上游部分乡镇曾有多达十多万头的生猪,水检测中氨氮指标严重超标;支流沿岸是企业和住宅区,由于污水管网建设不到位,有相当一部分的污水排入支流进入杭州塘河道……

“上游来水时好时坏,但整治自身污染别无选择。”黄炼锋说。

2013年以来,秀洲区与嘉兴市同步,开展全域范围内的生猪退养,减少生猪养殖对河道水质的破坏;秀洲新区对区域内13个沿线码头进行集中清理淘汰……

杭州塘在秀洲新区工业园区境内有9条支流相连,支流沿岸是企业和住宅区。由于污水管网建设不到位,部分污水排入支流进入杭州塘河道,为此,截污纳管、腾退低小散的发条一次次拧紧……

针对秀洲段沿岸有多个小区雨污串管渗漏问题,先后对多个小区进行雨污分流改造,对多条道路雨污系统进行修复……

运河杭州塘秀洲段河长仲卫忠说,运河杭州塘治理秀洲城区段南北岸分别涉及秀洲、经开两个行政区,两区协同、紧密配合推动了河道治水。

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