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环境化学  2015 

可渗透反应墙对地下水中多氯联苯的处理

Keywords: 可渗透反应墙,多氯联苯,铸铁粉,活性炭

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Abstract:

以还原铁粉、铸铁粉、铸铁粉与活性炭的混合物为可渗透反应墙(PRB)的主要反应介质,设计了三种反应体系,处理多氯联苯PCBs(1242)污染的地下水.在有效孔隙率为60%—65%,水力停留时间为12—14.4h的条件下,考察其对污染物的去除效果.结果显示三个反应体系中,pH值从6.83分别升高到10.66,9.40和8.50;氧化还原电位从81mV分别降到-30mV,-18mV和12mV;PCBs(1242)的去除率分别为91.0%,93.9%,94.5%.

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