炭砂滤池对农村饮用水中浊度及细菌的去除效果  

Removal effect of turbidity and bacteria in rural drinking water by GAC-sand filter

作　　者：曾洁 陈正福 吴尚书 叶成松[1] 于鑫[1] 王蕾[4] 张胜华[1] ZENG Jie;CHEN Zhengfu;WU Shangshu;YE Chengsong;YU Xin;WANG Lei;ZHANG Shenghua(Key Lab of Urban Environment and Health,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China;Wuhan Jiangxia District Bureau of Water and Lakes Affairs,Wuhan 430200,China;College of Petroleum Engineering,Liaoning Shihua University,Fushun 113001,China;Fujian Engineering and Research Center of Rural Sewage Treatment and Water Safety,Xiamen University of Technology,Xiamen 361021,China)

机构地区：[1]中国科学院城市环境研究所,城市环境与健康重点实验室,厦门361021 [2]武汉市江夏区水务和湖泊局,武汉430200 [3]辽宁石油化工大学石油天然气工程学院,抚顺113001 [4]厦门理工学院,福建省农村污水处理与用水安全工程研究中心,厦门361021

出　　处：《环境工程学报》2020年第10期2736-2741,共6页Chinese Journal of Environmental Engineering

基　　金：福建省中科院STS计划配套项目(2018T3102);福建省农村污水处理与用水安全工程研究中心开放研究基金(RST201806)。

摘　　要：粗滤-炭砂过滤是简单实用的农村水处理工艺。通过中试装置,检测了滤池对浊度、细菌总数和大肠杆菌的去除效果,研究了炭砂滤池出水安全性。结果表明:炭砂滤池能进一步降低粗滤池出水浊度,并将其控制在0.7~2.2 NTU;砂层作为保证出水浊度的屏障,其浊度去除率在炭层基础上可再增加11.1%;炭砂滤池对大肠杆菌的平均去除率随着滤速的降低而增大,且该差异主要是由炭层贡献的;当滤速为5 m·h-1时,炭砂滤池对大肠杆菌平均对数去除率为0.79;但滤池运行过程中会产生微生物泄露的现象,对细菌总数基本无去除作用。因此,为保障出水的微生物安全性,炭砂滤工艺后须增加行之有效的消毒工艺。Roughing filtration-GAC-sand filtration is a simple and practical rural drinking water treatment process.The removal effects of turbidity,total bacteria count and Escherichia coli were tested for the pilot-scale unit,and effluent safety of-GAC-sand filter was studied.Results indicated GAC-sand filter could further reduce the effluent turbidity of roughing filter to around 0.7~2.2 NTU.As a barrier for ensuring effluent turbidity,the turbidity removal efficiency of sand layer increased by 11.1%compared with that of the GAC layer.The average removal efficiency of Escherichia coli by GAC-sand filter increased with the decrease of filtration rate,which was dominated by GAC layer.The average log removal rate of Escherichia coli was 0.79 for GAC-sand filter at filtration rate of 5 m·h-1.However,microbial leakage phenomenon occurred during GAC-sand filter running,which had almost no removal effect for total bacterial counts.Thus,effective disinfection treatment should be added and guaranteed after GAC-sand filter to ensure the microbial safety of drinking water.

关 键 词：炭砂滤 浊度 细菌总数 大肠杆菌 农村供水 

分 类 号：X703[环境科学与工程—环境工程]