模拟人工湿地对生活污水中脱氮除磷的研究  

Purifying Effects on Nitrogen and Phosphorous in an Artificial Wetland

作　　者：刘金苓[1] 卢彦[1] 章金鸿[1] 黄华[1] 李睿[1] 廖庆玉[1] 刘韵达[1] 潘丽仙[1] 

机构地区：[1]广州市环境保护科学研究院,广州510620

出　　处：《广州环境科学》2012年第2期35-38,共4页Guangzhou Environmental Science

基　　金：国家水专项科研项目:快速发展区农村污水控制模式研究及示范工程(2009ZX07211-005-05)

摘　　要：通过室内模拟人工湿地,研究了风车草、梭鱼草和香蒲组合技术对生活污水中氮磷的去除效应及其去除效率与水力停留时间(HRT)的变化规律。本试验用水为生活污水,氨氮20.09mg/L,TN25.12mg/L,PO43--P3.933mg/L,TP5.89mg/L,CODCr92.3mg/L,BOD524.7mg/L。研究结果表明,各种处理对氮磷的去除效率随着停留时间的延长而增加,其中梭鱼草+香蒲和梭鱼草+风车草2种处理对氮、磷的去除效率最好,HRT为6d时,对总氮和氨氮的去除率达到90%和91%,对总磷和磷酸盐的去除效率达到84%和82%,HRT为12d时,对总氮和氨氮的去除效率达到92%和95%,对总磷和磷酸盐的去除效率达到90%。考虑野外运营,认为HRT6d为最佳。Artificial wetlands were set up in a greenhouse, and the purifying effects on nitrogen and phosphorous were studied with wastewater containing NH 3 -N 20.09 mg/L, TN 25.12 mg/L, PO 4 3- -P 3.933 mg/L, TP 5.89 mg/L, COD Cr 92.3 mg/L, BOD 5 24.7 mg/L. The results showed that the purifying effects were higher as time passed, and the purifying effects on nitrogen and phosphorous in the wetland cultivated with Pontederia cordata Typhae latifolia and with Pontederia cordata and Cyperus alternifolius were higher than normal. When HRT was 6 days, the removal of total nitrogen, ammonium, total phosphorous, and phosphate were 90% ,91%, 82%, and 84%, respectively, and were 92%, 95%, 90%, and 90%, respectively,when HRT was 12 days.

关 键 词：模拟人工湿地 植物 脱氮除磷 去除效率 水力停留时间(HRT) 

分 类 号：X703[环境科学与工程—环境工程]