复合人工湿地去除生活污水中的有机物和氮  

Removal of organic matter and nitrogen from wastewater by integrated vertical flow constructed wetland

作　　者：赵军[1] 薛宇[2] 李晓东 尤涛 汪德生 张巍 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]辽宁大学环境学院,沈阳110036 [3]辽宁省环境科学研究院,沈阳110031

出　　处：《环境工程学报》2013年第1期26-30,共5页Chinese Journal of Environmental Engineering

基　　金：国家"水体污染控制与治理"科技重大专项(2012ZX07212-001);"十一五"国家科技支撑计划项目(2010BAC68B02)

摘　　要：为提高人工湿地对生活污水的处理能力,对传统的单一垂直流湿地进行改进和优化。采用2个垂直流人工湿地串联,并在好氧湿地内增加曝气供氧,使好氧湿地内溶解氧保持在2～2.5 mg/L范围内,而后增加出水回流。结果表明,增加曝气显著提高了出水的COD、NH3-N去除率,但TN去除效果仍不达标;当随着回流比的增加,NH3-N的去除率略有提高,而后趋于稳定,TN去除率提高显著,但回流比过大时,TN去除率则有所下降。To improve the sewage treatment capacity of constructed wetland, the traditional single vertical flow wetland was improved and optimized to two linked vertical flow constructed wetland. Aeration was increased in the aerobic wetland and the dissolved oxygen within the aerobic wetlands remained in 2 - 2. 5 mg/L, and then the recirculation was added. The results showed that the removal rate of effluent COD and NH3-N was significantly improved with increasing aeration, but the TN removal efficiency still could not reach the standard. With the in- creasing of reflux ratio, the removal rate of NH3-N increased slightly and gradually kept stable, while the removal rate of TN increased significantly. When the recirculation ratio got too large, the removal rate of TN would decrease.

关 键 词：人工湿地 曝气 回流比 

分 类 号：X703.1[环境科学与工程—环境工程]