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北京工业大学学报 2015

微污染引黄水库水中有机物特性研究

Keywords: 引黄水库水,有机物,比紫外吸收值,分子质量分布,消毒副产物生成势,嗅味

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Abstract:

为解决有机微污染水源水的工艺选择问题,以黄河下游地区某引黄水库为研究对象,分析了有机物含量的年度变化规律,研究了比紫外吸收值(SUVA)、分子质量分布、消毒副产物生成势(DBPFP)、嗅味物质等有机污染特性.结果表明:引黄水库水有机物含量全年变化幅度不大,耗氧量平均为2.32mg/L,UV254平均为0.045cm-1,ρ(DOC)平均为2.32mg/L;但芳香化构造程度较高,以小分子有机物为主,分子质量<3ku的约占总量的70%;消毒副产物生成势较高,以三卤甲烷为主,占DBPFP总量的94.6%,其中CHCl3占77%;二甲基异崁醇含量较高,呈季节性变化,主要由蓝藻中的浮丝藻、颤藻等的代谢产生;引黄水库水有机物特性与黄河来水水质、沉砂调蓄过程及水力停留时间等因素有关,适宜选择臭氧活性炭深度工艺进行处理.

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