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。
In this study,two integrated vertical flow wetlands were constructed to research the pollutant removal principle in the perspective of enzymology. The activities of phosphatase and urease were measured in a down flow-up flow and a down flow-down flow integrated constructed wetland system. The results were as follows: The activities of phosphatase and urease tended to decrease along the flow. In both systems' first pool,the activities of the phosphatase and urease kept in a high level and varied obviously daily. In every system's first pool,the activities of the phosphatase and urease had significant correlation.The urease activity had a notable correlation with the TN removal efficiency while the phosphatase activity did not. The removal efficiency of COD had relativity with neither phosphatase nor urease.
出处
《环境工程》
CAS
CSCD
北大核心
2015年第1期15-18,61,共5页
Environmental Engineering
关键词
复合人工湿地
磷酸酶
脲酶
去除率
相关性
integrated constructed wetland
phosphatase
urease
removal efficiency
correlation
