环境工程学报2012，Vol.6Issue(10)：3537-3542,6.
水力停留时间变化对2种人工湿地净化效果的影响
Influence of hydraulic retention time variation on purification effects of two different constructed wetlands
摘要
Abstract
Based on the pilot-scale field experiment of constructed wetland on the riverside of Xinyi River,the relationship between hydraulic retention time variation and purification effect of two different constructed wetlands was studied.It is showed that hydraulic retention time variation significantly influenced purification effect of subsurface flow constructed wetland(SSFW) and vertical flow constructed wetland(VFW).With the variation of hydraulic retention time,potassium permanganate index(CODMn) and ammonia nitrogen(NH+4-N) removal effect increased,and then declined.The purification effect of VFW was better and more stable than SSFW.For both wetlands,the best retention time for CODMn and NH+4-N removal effect appeared about 2 d.The removal rates were 93.1% and 87.7%,respectively.However,for SSFW,the best hydraulic retention time of CODMn removal was about 2 d,and the removal rate was 92.3%.The best retention time for NH+4-N removal was about 2.5 d,the removal rate was 81.5% accordingly.SSFW and VFW are both suitable for Xinyi River pollution treatment;the best hydraulic retention time of both wetlands can be set as 2 d.关键词
人工湿地/水力停留时间/污染物/净化效果Key words
constructed wetlands/hydraulic retention time/pollutants/purification effect分类
资源环境引用本文复制引用
吴建强,周训华,王敏,唐浩,吴健,沙晨燕..水力停留时间变化对2种人工湿地净化效果的影响[J].环境工程学报,2012,6(10):3537-3542,6.基金项目
国家公益性行业（农业）科研专项 （）
