生态环境学报2016，Vol.25Issue(2)：292-299,8.DOI:10.16258/j.cnki.1674-5906.2016.02.016
不同基质组合及水力停留时间下垂直流人工湿地的除污效果
Research on Pollutants Removal Effect of Different Combined Substrate under Different Hydraulic Retention Time in Vertical Flow Constructed Wetlands
摘要
Abstract
Collocating different substrate and chooseing a suitable hydraulic retention time could enhance the effects of pollutants removal effect of constructed wetlands. In our study, three kinds of the substrate, volcanic stone, coarse slag and oyster shell were selected. and used to The pollutants removal rate under five kinds of combined substrate (grading loading of the combined substrate 1∶1∶1, 2∶1∶1, 1∶2∶1, 1∶1∶2 and homogenous mixing of combined substrate:1∶1∶1 individually) and five different hydraulic retention time (2, 4, 6, 8, 10 h individually) were measured using substrate column adsorption test. The results showed that the pollutant removal efficiencies of COD, TN, NH4+-N and TP were significantly different among different volume combinations, with the better pollutant removal efficiency under grading loading of the combined substrate 1∶1∶1. The pollutant removal efficiencies under different hydraulic retention time were also significantly different. With the extension of hydraulic retention time, the decontamination effect of four volume combinations was higher. No significant interactions were found between volume combinations and hydraulic retention time. Our results highlighted the importance of collocate different substrate or choose a suitable hydraulic retention time in the decontamination effect of wetlands.关键词
人工湿地/基质组合/水力停留时间/除污效果Key words
constructed wetlands/combined substrate/hydraulic retention time/decontamination effect分类
资源环境引用本文复制引用
张毓媛,曹晨亮,任丽君,田爽,李宁,安树青,冷欣..不同基质组合及水力停留时间下垂直流人工湿地的除污效果[J].生态环境学报,2016,25(2):292-299,8.基金项目
国家水体污染控制与治理科技重大专项 （）
