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直面挑战 打赢碧水保卫战_中国经济网——国家经济门户

　　那么，水质提升到底面临哪些挑战？如何有效治理水环境、保障水安全？
　　湖泊富营养化和流域污染治理任重道远。举例来看，日本霞浦湖在20世纪70年代初曾严重富营养化。1984年到2011年，日本政府实施了六期治理工程，使霞浦湖污染得到控制，但是截至目前，霞浦湖治理尚未真正完成。霞浦湖的化学需氧量（COD）治理目标为3毫克/升，但目前经过治理之后COD浓度仍然在7毫克/升左右，离目标还有相当的距离。在我国，湖泊富营养化问题也很突出，长江流域最大的三个湖泊鄱阳湖、洞庭湖、太湖都是轻度富营养化；流域方面，除长江和珠江以外，淮河、海河、辽河、松花江等流域也属于轻度污染。因此，湖泊治理和流域水质根本改善尚需时日。
　　巨淀湖位于山东省寿光市双王城生态经济园区，湖区面积1.3万亩，是寿光唯一的天然 ....

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直面挑战 打赢碧水保卫战

直面挑战打赢碧水保卫战
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