多级垂直流水培植物系统对生活污水净化效果及稳定性研究  

STUDY ON THE PURIFICATION EFFECT OF A MULTI-STAGE VERTICAL FLOW AQUATIC PLANTS SYSTEM FOR THE DOMESTIC SEWAGE AND ITS STABILITY

作　　者：张魏 张清东[1] 王欢[1] 文倩 

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《环境工程》2017年第11期14-17,22,共5页Environmental Engineering

基　　金：国家科技支撑计划课题(2013BAD07B00-13)

摘　　要：鉴于传统人工湿地存在基质易堵塞、系统长期运行不稳定等缺点,提出采用4级垂直流水培植物系统处理城市生活污水,考察了系统稳定性及2种不同植物对COD、NH3-N、TN、TP的去除效果。系统在运行42 d后达到稳定,该系统随着反应级的增加,出水水质变异系数逐渐减小,稳定效果逐渐提高。稳定后蕹菜系统和水稻系统对COD、NH3-N、TN、TP的平均去除率分别为66.4%、92.9%、86.0%、89.6%和62.1%、90.4%、82.5%、76.8%,污水处理系统出水达到GB 18918—2002《城镇污水处理厂排放标准》的一级B级标准。Considering the defect of traditional constructed wetland which is easily blocked by substrate and not stable enough,a four-stage vertical flow aquatic plants system was used in this research to treat domestic sewage. The stability of the system,and effects of two plants on the removal rate of COD,NH3-N,TN,TP were investigated. The system came to stable after 42 d. The variable coefficient of water quality decreased with the reaction stages increased,also the stability of treatment system got enhanced. The average removal rates of COD,NH3-N,TN,TP by ipomoea aquatica system were 66. 4%,92. 9%,86. 0%,89. 6%,those of rice system were 62. 1%,90. 4%,82. 5%,76. 8%,respectively. The effluent quality of the two sewage treatment systems all satisfied the first class B standard of ＂Chinese Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant＂（GB 18918—2002）.

关 键 词：多级垂直流系统 水培植物 生活污水 稳定性 净化 

分 类 号：X173[环境科学与工程—环境科学] X799.3