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- Title
复合填料生物滞留设施对径流污染物去除效果.
- Authors
潘俊奎; 刘 燕; 屈昱安; 高建平; 张续光
- Abstract
The type of filler has an important influence to the water purification effect of bioretention system. Through the simulation test of bioretention column, using natural soil and construction sand as basic fillers, sawdust compost, zeolite and anthracite as improved materials, the removal effects of COD(chemical oxygen demand), TP(total phosphorus), NH=4-N(ammonia nitrogen) and NO-3-N(nitrate nitrogen) by different filler combinations(the sand and soil ratio of planting soil, adding sawdust compost to planting soil, adding zeolite and anthracite separately and simultaneously in sand filter) were studied and the water treatment effect of bioretention of traditional sand filler and composite filler under different inflow characteristics was evaluated. Based on the results, in the six filter combinations, adding sawdust compost in planting soil and simultaneously adding anthracite and zeolite in sand filter layer has the best treatment effect on each pollutant. Under seven inflow conditions, the concentration removal rates of COD, TP, NH=4-N and NO-3-N by traditional sand and soil fillers bioretention are 70.5%-87.5%, 50.0%-79.3%, 84.7%-96.7% and -110.5%-23.3% respectively, while the concentration removal rates by composite fillers bioretention are 84.0%-93.0%, 82.0%-92.0%, 80.0%-94.7% and 24.3%-90.4% respectively. The comprehensive treatment effect of bioretention system with composite fillers on pollutants is obviously enhanced. In addition, compared with traditional sand and soil fillers bioretention, the influence of inflow characteristics to the treatment effect of runoff pollutants of composite fillers bioretention is relatively less.
- Publication
Yellow River, 2020, Vol 42, Issue 8, p93
- ISSN
1000-1379
- Publication type
Article
- DOI
10.3969/j.issn.1000-1379.2020.08.019