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采用微污染河水作为模拟雨水和地面径流,经免烧结成型的硅砂滤水砖渗滤装置处理后,检测滤前和滤后的水质变化。结果表明,经过透水砖渗滤作用,对浊度、NH+4-N和TP的平均去除率分别为58.7%、12.8%和21.1%;由于硅酸盐的析出导致p H值稍微增大;CODMn浓度在开始的几次过滤中有少量增长,之后随着过滤次数的增加而下降;硅砂滤水砖对溶解性荧光有机物中类蛋白物质浓度的影响不大,但类腐殖质物质浓度稍有增加。
Micro-polluted river water was used to simulate rainwater and surface runoff. After treatment with silica sand filter brick infiltration device without sintering, the change of water quality before and after filtration was tested. The results showed that the average removal rates of turbidity, NH + 4-N and TP were 58.7%, 12.8% and 21.1% respectively after percolation of permeable bricks; p H value slightly increased due to silicate precipitation; The concentration of CODMn increased slightly from the first few filtrations and then decreased with the increase of the number of filtration. Silica sand filter bricks had little effect on the concentration of protein-like substances in dissolved fluorescent organic matter, but the concentration of humus-like substances increased slightly .