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湖泊科学  2008 

云南抚仙湖流域废弃磷矿区水污染现状

DOI: 10.18307/2008.0615

Keywords: 抚仙湖流域,磷矿,,,流失

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Abstract:

抚仙湖流域未进行生态修复的磷矿废弃地面积142×104m2,对磷矿废弃地污染物流失量和区域内径流污染物含量进行调查观测,并提出磷矿废弃地水污染防治对策.富磷矿石剖面和堆土场在风化作用和降雨淋溶作用下,大量氟、磷等元素释放,造成磷矿区内地表径流和地下渗流污染.结合实测的磷矿废弃地面积和土柱淋溶实验得到的污染物淋溶量,估算得到磷矿废弃地每年F-和TP的淋溶流失量为60.65t/a和27.34t/a,随地表径流迁移进入抚仙湖的F-和TP分别为22.58t/a和7.27t/a.由此可见,磷矿开采是抚仙湖的一个持久污染源,对湖泊营养化演变进程起了推动作用.

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