4种组合人工湿地系统去除水体硝基苯的比较
首发时间:2009-04-03
摘要:硝基苯是一种典型的难化学氧化、难生物降解的有毒有机污染物。笔者构筑4种填料组合不同的组合人工湿地系统处理含硝基苯的污水,寻找含硝基苯污水净化的新方法,开拓湿地系统应用的新思路。研究结果表明人工湿地系统能够有效的净化水体硝基苯,稳定性较好,且具备一定的抗负荷变化的能力;二级串联的组合人工湿地系统比一级垂直复合流人工湿地的净化效果好;4种组合人工湿地系统中,煤渣+粗沙的组合人工湿地系统Ⅰ的去除效果最佳,对硝基苯平均去除率接近80%。
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Treatment comparison of nitrobenzene in water using 4 types of combinational constructed wetland
Abstract:Nitrobenzene is a typical organice pollutant. It is difficult to be chemically oxidized or biodegraded. In this paper, four types of combinational constructed wetland were used to treat nitrobenzene contaminated water in order to offer a new method to purificate nitrobenzene contaminated wastewater and find a new application of wetland. The results showed that combinational wetlands were effective and stable to treat water containing nitrobenzene under different impact load; 2-stage serial combinational wetland performed better than 1-stage serial integrated vertical flow constructed wetland; of the four combinational constructed wetlands, combinational constructed wetland Ⅰusing coal cinder and sand as its substrate showed highest average removal efficiency: nearly 80%.
Keywords: constructed wetland nitrobenzene coal cinder biological treatment system
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No.3107145684012387****
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