%0 Journal Article
%T 复合垂直流人工湿地处理生活污水的试验研究<br>Experimental study on the treatment of sewage by hybrid vertical constructed wetland
%A 范英宏
%J 北京交通大学学报
%D 2018
%R 10.11860/j.issn.1673-0291.2018.06.006
%X 摘要 通过小试系统进行了复合垂直流人工湿地处理生活污水的试验研究，分析了水力负荷、进水溶解氧等因素对污水处理效果的影响.试验结果表明，随着水力负荷降低,化学需氧量、总氮、氨氮的去除率显著提高，总磷的去除率随着水力负荷降低而提高，但当水力负荷降低到100 mm/d以后总磷的去除率反而降低.湿地系统进水溶解氧浓度对化学需氧量和总磷的去除效果影响不大，但对总氮和氨氮去除效果影响显著，随着溶解氧浓度的增加，总氮和氨氮的去除率显著提高.湿地系统对化学需氧量和总磷的去除作用主要发生在第一级下向流湿地，而对总氮和氨氮的去除作用则在整个湿地系统两级湿地中连续进行.试验结果表明，通过优化湿地系统结构、水力负荷及曝气等条件，可以增强湿地系统的污水净化效果，用于处理铁路中小站区生活污水是可行的.<br>Abstract：The influential factors of sewage treatment efficiency caused by hydraulic loading and inlet dissolved oxygen are analyzed through an experimental study on the hybrid vertical-flow wetland by a preliminarily system. The research results show that the removal rate of the chemical oxygen demand, total nitrogen and ammonia nitrogen significantly increase with the decrease of the hydraulic loading. The removal rate of the total phosphorus increases with the decrease of hydraulic loading. When the hydraulic loading is lower than 100mm/d, the removal rate of the total phosphorus decreases with the decreasing hydraulic loading. The dissolved oxygen shows no obvious influence on the removal efficiency of the chemical oxygen demand and the total phosphorus, but shows great influence on the removal efficiency of the total nitrogen and ammonia nitrogen, the removal efficiency of which increases significantly with the increase of dissolved oxygen concentration. The results also show that in the wetland system, the removal of the chemical oxygen demand and the total phosphorus mainly occur in the first stage of down-flow wetland, and the removal of the total nitrogen and ammonia nitrogen occur in two stages continuously. The test results show that by optimizing the wetland system structure, hydraulic loading and aeration, the purification effect of the wetland system could be enhanced. Therefore, the hybrid vertical constructed wetland is feasible for the treatment of the sewage in the small and medium-sized railway station.
%K 人工湿地
%K 复合垂直流
%K 化学需氧量
%K 总氮
%K 总磷
%K 氨氮&lt
%K br&gt
%K constructed wetland
%K hybrid vertical flow
%K chemical oxygen demand(COD)
%K total nitrogen(TN)
%K total phosphorus(TP)
%K ammonia nitrogen
%U http://jdxb.bjtu.edu.cn/CN/abstract/abstract3452.shtml