路缘石过滤集水系统造价与过滤效率研究

Cost and Filtration Efficiency of Curb Filtration Water-collection System

以南昌某高校校园路面雨后滞留径流雨水为研究对象,分别以粒径为2~3.5 mm,0.84~2 mm,0.5~1 mm,0.15~0.4 mm,0.1~0.2 mm的石英砂,粒径为1~2 mm含锰量30%和40%、2~4 mm含锰量30%和40%的锰砂以及粒径为1~3 mm,3~5 mm的硅藻土为细滤料,构建城市道路路缘石过滤集水系统,对校园滞留径流雨水进行过滤处理,研究过滤系统造价与处理效果的关系。结果表明:采用石英砂类对雨水的处理效果最好,粒径为0.2~0.4 mm的滤料性价比最高。

With residual runoff rainwater on campus pavement of a university in Nanchang,urban road curb filtration water collection system is constructed from quartz sand with particle sizes of 2-3.5 mm,0.84-2 mm,0.5-1 mm,0.15-0.4 mm,0.1-0.2 mm,manganese sand with manganese contents of 30% and 40% and particle size of 1-2 mm, manganese sand with manganese contents of 30% and 40% and particle size of 2-4 mm,and diatomite with particle size of 1-3 mm and 3-5 mm,and is used for treating residual runoff rainwater on campus pavement,and the relationship between filtration system cost and treatment effect is studied.The results show that quartz sand has the best effect on rainwater treatment,and the filter material with particle size of 0.2-0.4 mm has the highest costperformance ratio.