土壤渗滤法深度处理再生水回用于景观水实验研究  

Experimental Study on the Advanced Treatment of Regenerated Water Used as Landscape Water by Soil Infiltration Method

作　　者：徐蕾 周立南 王广斌[2] 雷灵琰[2] 李晓红[2] 王晓[2] XU Lei;ZHOU Li-nan;WANG Guang-bin;LEI Ling-yan;LI Xiao-hong;WANG Xiao(Xuzhou Environmental Monitoring Central Station,Xuzhou 221000,China;China University of Mining and Technology,Xuzhou 221000,China)

机构地区：[1]徐州市环境监测中心站,江苏徐州221000 [2]中国矿业大学,江苏徐州221000

出　　处：《环境科技》2018年第3期7-10,19,共5页Environmental Science and Technology

基　　金：江苏省环境监测科研基金项目(1709);徐州市重点研发计划(社会发展)项目(KC17155)

摘　　要：通过建立实验室模型,改变土壤渗滤系统的填料厚度和配比,以及针对在不同水力负荷下COD_(Cr)、氨氮、TP的去除率等,研究影响土壤渗滤法深度处理再生水回用于景观水效果的主要影响因素,得出了以下结论:过滤土层厚度跟过滤效果成正相关系;土层厚度达到40 cm时出水水质即可达到景观水水质标准。随着水力负荷的增加,TP的去除率有所下降,而COD_(Cr)和氨氮的去除率先上升后下降,水力负荷为0.08 m^3/(m^2·d)时,COD_(Cr)的去除率达到最大,为76.9%,氨氮的最高去除率达80.1%。综合各影响因素确定以0.08 m^3/(m^2·d)为最佳水力负荷。Through the establishment of a laboratory model,the removal rate of CODCr,Total phosphorus and ammonia nitrogen under different hydraulic loads were studied by changing the thickness of packing thickness and proportion.The main factors that influence the effects of the advanced treatment of regenerated water into scenic water by soil infiltration method were discussed.The results showed that with the increasing of filter soil thickness,the filtering effect is better and the quality of produced water is higher.And the quality of produced water can reach the standard of scenic water when the filter soil thickness is 40 cm.Regenerated water that meets the water quality standard can be obtained after filtering through a soil layer of 40 cm in thickness and a sand layer of 30 cm in thickness.When the concentration of pollution is fixed,the removal rate of TP is decreasing,while the removal rate of CODCr and ammonia nitrogen are increasing at first and then decreasing.When the hydraulic loading is 0.08 m3/(m2窑d),the removal rate of CODCr reaches up to the peak value 76.9%,and the highest removal rate of ammonia nitrogen is 80.1%.The optimal hydraulic load is determined to be 0.08 m3/(m2窑d)by overall consideration of the influencing factors.

关 键 词：土壤渗滤法 再生水 景观水体 填料比 水力负荷 

分 类 号：X7[环境科学与工程—环境工程]