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不同组合垂直潜流式人工湿地对高碳或氮污水的净化效果

Keywords: 高COD负荷,高TN负荷,季节变化,污染物去除率

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Abstract:

4种组合的垂直潜流式人工湿地在高C和高N污染物负荷条件下都可以得到很好的污染物降解效果。VDF-VUF湿地组合被确定为最优的组合,它在夏末(7月和8月)和初秋(9月)可以得到较高的污染物去除率,且在8月份可以达到最大值。VDF-VUF湿地组合对于COD、TN和TP去除率的平均值在高C污染物负荷条件下分别为(96.97±6.32)%、(89.45±5.29)%和(83.12±6.03)%;在高N污染物负荷条件下分别为(93.21±7.84)%、(94.27±4.36)%和(82.36±5.52)%。各种人工湿地组合的COD和TN的去除率都受到了季节变化、湿地组合类型以及这两者的综合效应的显著影响;但是TP的去除率则不受任何因素的显著影响。

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