复合流人工湿地处理生活污水的试验研究  

EXPERIMENTAL STUDY OF HYBRID FLOW CONSTRUCTED WETLANDS TREATING DOMESTIC SEWAGE

作　　者：祝宇慧[1] 田光明[1] 

机构地区：[1]浙江大学环境与资源学院,浙江杭州310029

出　　处：《水处理技术》2009年第1期46-49,53,共5页Technology of Water Treatment

基　　金：浙江省重点科研项目(2006C23076)

摘　　要：通过模拟试验,对水力停留时间(HRT)为3、2、1d下,复合流人工湿地去除生活污水中污染物的效能进行了研究。结果表明,COD、TP、TN、NH4+-N的去除率均随停留时间的增加而提高,当HRT=3d时,各污染物的去除率分别为38.67%,79.83%,93.13%,96.27%。湿地系统对TN、NH4+-N的降解主要集中在湿地结构单元的进水段水芹单元A和出水段香菇草单元D,而对COD、TP的去除主要集中在结构单元的前半段的水芹单元A和石菖蒲单元B。该人工湿地系统对COD、TP、TN等污染物的去除效果在进水浓度较高时要好于低浓度。The removal efficiency of COD, TP, TN and NH4^＋-N from domestic sewage under different hydraulic retention time （HRT, 3, 2 and ld） in the stimulated hybrid flow wetlands was investigated. The results showed that the removal efficiency of COD, TP, TN and NH4^＋-N increased with the extending of HRT. When HRT was 3 days, COD, TP, TN and NH^4＋-N decreased 38.67%, 79.83%, 93.13% and 96.27%, respectively. In the wetland system, the reduction of TN and NH4^＋-N mainly centralized in the sector A and D of hybrid flow wetland system, while the removal of COD and TP were in the sector A and B. The removal efficiency of the stimulated wetland was better in the wastewater with higher pollutant concentrations than lower concentrations.

关 键 词：人工湿地 复合流 净化效率 

分 类 号：X703.1[环境科学与工程—环境工程]