复合人工湿地系统酶活性及其与污染物净化效果的相关性
doi: 10.13205/j.hjgc.201501004
APPLICATION OF CONSTRUCTED WETLAND IN EUTROPHICATED LANDSCAPE WATER REMEDIATION
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摘要: 构建目前广泛应用的复合垂直流人工湿地系统,从酶学角度探讨湿地主要污染物净化机理。通过对下行流-上行流复合人工湿地和下行流-下行流复合人工湿地2套系统磷酸酶、脲酶活性的测定发现,磷酸酶、脲酶活性随系统流程逐级降低,一级池磷酸酶、脲酶活性较高且日变化较大,同一一级池中磷酸酶、脲酶活性呈显著相关性。系统脲酶活性和TN去除率相关性显著,磷酸酶活性与TP去除率不存在显著相关性,磷酸酶、脲酶活性与COD去除率相关性亦不显著。Abstract: Constructed wetland was studied in eutrophicated landscape water with the constructed wetland 1 and constructed wetland 2 in a conference center. results showed that constructed wetland 1 and constructed wetland 2 both removed COD, TN,TP effectively and plants showed no significant influence on the pollutants removal. TP removal relied mainly on the role of the substrate. COD and TN removal mainly occurred at the front and middle of wetlands,removal efficiencies of the front were higher than that of the middle.
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Key words:
- landscape water /
- constructed wetlands /
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