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Pilot Studies on Coagulation-Microfilter Process to Improve the Biostability of Drinking Water

Authors： Tao Runxian1 Chen Li1 Wang Haiyan2 GuoXingfang1 Zhu Kaidong1

Units： 1. North China Municipal Engineering Design & Research Institute, Tianjin, 300074; 2. Qingdao University of Science & Technology, Qingdao, Shandong, 266033

KeyWords： Coagulation; Microfilter; Biostability; BDOC; TP

ClassificationCode：TU991

year,volume(issue):pagination： 2012,32(1):107-111

Abstract：

A pilot study was done to evaluate the impact of the coagulation-microfilter process on reduction of nutrient levels and on the biostability of treated water. The DOC removal efficiency increased with the increase of coagulant dosing, while the average DOC removal reached to 22.4% with adding 2mg/L FeCl3 as coagulant. In addition, Biodegradable Dissolved Organic Carbon (BDOC) and Total Phosphate (TP) could be removed effectively and the BDOC and TP in effluent were below the threshold of bio-stability, which is 0.20-0.25mg/L and 5μg/L respectively. And the Bacterial Regrowth Potential (BRP) of the effluent could be degraded by 1 LOG. The results show that the coagulation- microfilter process is effective to improve the bio-stability of drinking water and to control the bacterial regrowth potential.

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AuthorIntro：

陶润先（1979－），男，工程师，主要研究方向为饮用水安全保障技术；Emial: rxtao@vip.sina.com

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