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土壤基质对回灌水的净化效果
Municipal wastewater reclamation by means of artificial groundwater recharge
【摘要】 在水资源管理体系中,人工地下水回灌是实现水资源再生的有效途径。介绍了城市污水人工地下水回灌技术的基础理论与发展现状。利用在北京市高碑店污水处理厂内的建立的人工地下水回灌示范工程,初步研究了城市污水处理厂二级出水经深度处理后进行地下水回灌对地下水水质的影响。引入钠吸附比表征回灌水在渗滤过程对土壤结构的影响。研究结果表明:土壤非饱和带对可溶解性有机碳(DOC)、氨氮(NH4+-N)、UV-254表征的有机物有良好的去除效果,对回灌水中可吸附有机卤化物(AOX)的去除率很低。
【Abstract】 Artificial groundwater recharge can improve groundwater resource reclamation and accelerate the implementation of sustainable water resources. This paper theoretically and experimentally analyzes the development of artificial grounwater recharge. Artificial groundwater recharge tests evaluated the effects of the recharge on the groundwater water quality at the Gaobeidian Sewage Treatment Plant using treated municipal secondary effluent. The sodium adsorption ratio (SAR) was used to indicate the impact of the artificial groundwater recharge on the soil properties. The results demonstrate that the unsaturated zone of the soil aquifer exhibited favorable elimination of DOC, ammonia nitrogen, and UV254, however, the AOX removal is especially poor.
【Key words】 water pollution; artificial groundwater recharge; groundwater; soil aquifer;
- 【文献出处】 清华大学学报(自然科学版) ,Journal of Tsinghua University(Science and Technology) , 编辑部邮箱 ,2004年03期
- 【分类号】X703
- 【被引频次】11
- 【下载频次】398