摘要
本文针对当前中国饮用水源污染以微污染为主的特点,以北京三家店水库原水和永定河河道砂为研究对象,设计了用于表征土壤含水层处理系统的一维土柱,进行污水净化效果的试验研究。结果表明,土壤含水层处理系统对三家店水库微污染水中的有机物有一定的去除效果,在0.12md的水力负荷条件下,对CODMn去除率虽然仅为15%,但是出水达到了地表水Ⅱ类水质标准;对BOD5的去除率达到了55%,可以被有效地去除。渗透速率相同时,水力负荷周期对去除效果的影响不明显,但在保证一定水力负荷的情况下,可适当延长落干期,恢复土壤的渗透能力,达到较好的处理效果。同时,土壤含水层处理系统的净化能力主要发生在土层50cm以内。
A soil aquifer treatment installation is built by using fiver sands in Yongding River to experimentally study the effectiveness of this kind of system for removing the organic substance in reservoir water. The slightly polluted water sample to be studied is the original water acquired from the Sanjiadian Reservoir, Beijing. The result shows that the system is effective in removing organic substance. When hydraulic loading is 0.12m/d, the average removal rate of CODMn is 15% and the effluent concentration accords with the standard of class Ⅱ . The average removal rate of BOD5 is 55 %. The effectiveness of removal varies with the wetting/drying ratio but not obviously under the same infiltration rate. The purification process happened mainly at the upper part of the soil column in the depth of 50cm.
出处
《水利学报》
EI
CSCD
北大核心
2005年第9期1083-1087,共5页
Journal of Hydraulic Engineering
基金
科技部重大科技项目
水利部重大科技项目
北京市"二四八"重大科技攻关项目(9550610400)
关键词
土壤含水层处理系统
微污染原水
有机物
试验
soil aquifer treatment system
slightly polluted water
organic substance
experiment
