摘要
构建下行流-上行流、下行流-下行流两套复合人工湿地处理生活污水,考察不同运行方式下两套湿地系统污染物净化效果。结果表明,下行流-上行流复合系统适合在较低水力负荷[0.6m3/（m^2.d）]下运行,系统连续进水5天的出水效果很好,COD、TP、氨氮、TN的去除率分别为75%-95%、65%-85%、45%-80%、45%-80%。下行流-下行流复合系统耐水力负荷冲击能力强,适合在高水力负荷[1.2m3/（m^2.d）]下运行,COD、TP、氨氮、TN的去除率分别为70%-95%、40%-85%、50%-90%、50%-80%;其水流方式较下行流-上行流复合系统水流方式更利于复氧,有利于高水力负荷下COD、氨氮的降解。研究成果为实际中人工湿地处理生活污水的运行操作提供了依据和参考。
Down flow-up flow constructed wetland and down flow-down flow constructed wetland were used to treat domestic sewage.The water qualities were measured to determine the effect of the wetland.The results showed that the down-flow and up-flow constructed wetland was suitable to be operated under a low HLR[0.6m3/（m^2·d）],the wetland performed very well in five days in a row.The removal efficiencies of COD,TP,NH4＋-N,and TN were 75%-95%,65%-85%,45%-80%,and 45%-80%,respectively.The downflow-downflow constructed wetland can work pretty well while under the high HLR[1.2m3/（m2·d）],the removal efficiencies of COD,TP,NH4＋-N,and TN were 70%-95%,40%-85%,50%-90%,and 50%-80%,respectively.Compared to the downflow-upflow constructed wetland,the downflow-downflow constructed wetland is more suitable for the oxygenation and the removal of COD and NH4＋-N.This article offered information and references for practical application of constructed wetland.
出处
《水科学与工程技术》
2011年第6期1-3,共3页
Water Sciences and Engineering Technology
基金
国家"863"计划资助项目(2003AA601040)
关键词
复合人工湿地
生活污水
净化效果
水力负荷
integrated constructed wetland
domestic sewage
purification efficiency
hydraulic load
