| 炭砂滤池对农村饮用水中浊度及细菌的去除效果 |
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| 引用本文： | 曾洁, 陈正福, 吴尚书, 叶成松, 于鑫, 王蕾, 张胜华. 炭砂滤池对农村饮用水中浊度及细菌的去除效果[J]. 环境工程学报, 2020, 14(10): 2736-2741. doi: 10.12030/j.cjee.201911049 |
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| 作者姓名： | 曾洁 陈正福 吴尚书 叶成松 于鑫 王蕾 张胜华 |
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| 作者单位： | 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 |
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| 基金项目： | 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) |
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| 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。
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| 关 键 词： | 炭砂滤 浊度 细菌总数 大肠杆菌 农村供水 |
| 收稿时间： | 2019-11-11 |
Removal effect of turbidity and bacteria in rural drinking water by GAC-sand filter |
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| ZENG Jie, CHEN Zhengfu, WU Shangshu, YE Chengsong, YU Xin, WANG Lei, ZHANG Shenghua. Removal effect of turbidity and bacteria in rural drinking water by GAC-sand filter[J]. Chinese Journal of Environmental Engineering, 2020, 14(10): 2736-2741. doi: 10.12030/j.cjee.201911049 |
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| Authors: | ZENG Jie CHEN Zhengfu WU Shangshu YE Chengsong YU Xin WANG Lei ZHANG Shenghua |
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| Affiliation: | 1.Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; 2.Wuhan Jiangxia District Bureau of Water and Lakes Affairs, Wuhan 430200, China; 3.College of Petroleum Engineering, Liaoning Shihua University, Fushun 113001, China; 4.Fujian Engineering and Research Center of Rural Sewage Treatment and Water Safety, Xiamen University of Technology, Xiamen 361021, China |
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| Abstract: | 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. |
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| Keywords: | GAC-sand filtration turbidity total bacterial count Escherichia coli rural water supply |
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