长江科学院院报2017，Vol.34Issue(3)：25-29,5.DOI:10.11988/ckyyb.20151002
多级人工湿地-塘组合系统去除污染物研究
Multi-stage Constructed Wetland-pond System to Remove Contaminants
摘要
Abstract
The effect of multi-stage constructed wetland-pond system in treating contaminated water with different hydraulic retention time (HRT) is researched.The pollutants in effluent water are tested for comparison.Results show that in early spring with low temperature, the removal rates of COD, TN and NH4+-N increase significantly with the increasing of HRT.Under the premise of ensuring the treatment effect, four-day HRT is reasonable.Twelve months of test with four-day HRT were conducted, and the test results show that as the seasons change, the purification effect of multi-stage constructed wetland-pond system fluctuates within a reasonable range: the COD, TN and NH4+-N removal rates in summer are better than those in winter.From the test results we conclude that the present system could achieve satisfactory result in removing contaminants, with the best quality of COD-removed effluent water reaching grade IV, and NH4+-N-removed effluent water close to grade IV of surface water.关键词
多级人工湿地/塘/水力停留时间/水污染物/除氮率Key words
multi-stage constructed wetland/pond/hydraulic retention time/water contaminant/nitrogen removal rate分类
资源环境引用本文复制引用
万博阳,王全金,戚晓波..多级人工湿地-塘组合系统去除污染物研究[J].长江科学院院报,2017,34(3):25-29,5.基金项目
国家自然科学基金项目(22141071) （22141071）
