摘要
依托建立在新沂河河漫滩上的人工湿地中试工程进行现场试验,研究分析潜流和垂直流2种人工湿地对污染河水的净化效果及其耐污染负荷冲击能力。结果表明:在相同的进水高锰酸盐指数浓度条件下,垂直流对高锰酸盐指数的净化效果明显优于潜流;2种人工湿地对NH4+-N的去除率均比较高(平均去除率均高于80%),且没有明显差异;2种人工湿地构造不同引起的水流运行方式及截留、过滤作用的差异对高锰酸盐指数的去除影响较大,而对NH4+-N去除的影响较小;进水污染负荷变化对人工湿地污染物去除的影响显著,垂直流耐高锰酸盐指数污染负荷冲击能力明显强于潜流,而对NH4+-N污染负荷变化,两者都表现出了较强的耐受能力,差异不明显。
Based on the pilot-scale experiment of constructed wetland in the alluvial flat of Xinyi River, the purification effect and pollutant loads resistibility of vertical flow constructed wetland （VFW） and subsurface flow constructed wetland （SSFW） were studied. Results showed that under the same influent water quality condition, VFW was superior to SSFW at potassium permanganate index purification with the removal rate at VFW and SSFW were 71.5% and 57.8% respectively. There was no obvious difference between these two kinds of constructed wetlands in the NH4^＋-N purification, the NH4^＋-N removal rates of them were all higher than 80%. The difference of water flow moving, catching and filtrating caused by wetland construction had a notable effect on the organic pollutant removal, but the influence on NH4^＋-N purification was minor. The change of pollutant loads brought significant influence on the pollutant removal efficiency of constructed wetlands. The potassium permanganate index pollutant loads resistibility at VFW was higher than that at SSFW, but for NH4^＋-N pollutant loads resistibility, there was no obvious difference between VFW and SSFW, both of them have strong resistibility to NH4^＋-N pollutant loads.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2010年第7期39-43,共5页
Environmental Pollution & Control
基金
上海市科学技术委员会基础研究重点项目(No.08JC1417600)
关键词
人工湿地
潜流
垂直流
污染负荷
constructed wetlands
subsurface flow
vertical flow
pollutant loads
