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两段式混合滤料渗滤系统处理模拟废水

Keywords: 两段式,混合滤料,渗滤系统,模拟废水

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Abstract:

两段式混合滤料渗滤系统在土壤渗滤系统的基础之上,加强反硝化反应,进而强化脱氮过程。为强化脱氮,整个系统被分成好氧段和厌氧段。混合滤料的使用可有效防止系统堵塞。厌氧段添加的锯末草灰为反硝化反应提供了足够的碳源,因此运行初期厌氧段内NO-3-N去除率可达100%。同时铁屑的添加除强化还原环境外还加强了TP的去除效果。采用模拟废水的研究结果表明:运行稳定后,该系统对COD、NH+4-N、TN和TP的平均去除率分别达到了87.7%、82.6%、81.0%和90.4%。

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