[1]田俊丽,姜建伟,魏国强,等.投氯方式对水厂控制藻类及消毒副产物生成的影响[J].中国给水排水,2023,39(11):30-34.
　TIANJun-li,JIANGJian-wei,WEIGuo-qiang,et al.Effect of Chlorine Dosing Mode on Algae Control and Disinfection By-products Formation in Waterworks[J].China Water & Wastewater,2023,39(11):30-34.
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投氯方式对水厂控制藻类及消毒副产物生成的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷 期数: 2023年第11期 页码: 30-34 栏目: 出版日期: 2023-06-01
Title:
Effect of Chlorine Dosing Mode on Algae Control and Disinfection By-products Formation in Waterworks
作者:
田俊丽1,2， 姜建伟3， 魏国强3， 尹硕3， 穆雪平3， 徐萍3， 毛洁1,2， 鲁金凤1,2
（1.南开大学 环境科学与工程学院，天津 300071；2.天津市复杂跨介质污染环境技术重点实验室，天津 300071；3.天津中法芥园水务有限公司，天津 300121）
Author(s):
TIAN　Jun-li1，2， JIANG　Jian-wei3， WEI　Guo-qiang3， YIN　Shuo3， MU　Xue-ping3， XU　Ping3， MAO　Jie1，2， LU　Jin-feng1，2
（1. College of Environmental Science and Engineering， Nankai University， Tianjin 300071， China； 2. Tianjin Key Laboratory of Environmental Technology for Complex Trans?media Pollution， Tianjin 300071， China； 3. Tianjin Sino-French Jieyuan Water Co. Ltd.， Tianjin 300121， China）
关键词:
南水北调引江水;  藻类控制;  投氯方式;  消毒副产物
Keywords:
raw water from the South-to-North Water Diversion Project;  algae control;  chlorine dosing mode;  disinfection by?products
摘要:
当前自来水厂为便于操作，在冬、夏不同季节采用投氯点位和投氯方式相同的模式，存在成本浪费、易引发高消毒副产物（DBPs）风险等问题。模拟处理南水北调引江水的天津某自来水厂“混凝—气浮—过滤—消毒”常规工艺，对比分析了单点、多点不同投氯方式分别在夏季高藻期和冬季低藻期除藻、灭菌及同步控制三卤甲烷、卤乙酸、卤乙腈、卤代硝基甲烷等DBPs的效能，以探寻最佳投氯方式。结果表明，在夏季高藻期，宜采用混凝前低剂量预氯化（投氯量为0.5 mg/L）+滤后加氨（0.3 mg/L）、加氯（投氯量为1.0 mg/L）的多点投氯方式；在冬季低藻期，可采用滤后加氨加氯（投氯量为1.1 mg/L）的单点投氯方式。
Abstract:
At present, many waterworks adopt the same mode of chlorine dosing points in different seasons to facilitate operation. It is costly, wasteful and poses a high risk of the disinfection by-products (DBPs) formation. Taking raw water from the South-to-North Water Diversion Project in Tianjin as the research object, the coagulation-air floatation-filtration-disinfection process of a waterworks was simulated. Comparative studies of single point chlorine and multi-point chlorine were conducted to explore their efficiency of controlling algae, killing germs and controlling DBPs (such as trihalomethanes, haloacetic acids, haloacetonitrile and halogenated nitromethanes) in high and low algal phases. The proposed solution of seasonal chlorine dosing processes is suggested: pre-chlorination before coagulation (chlorine dosage of 0.5 mg/L) + chlorination with ammonia after filtration (ammonia dosage of 0.3 mg/L, chlorine dosage of 1.0 mg/L) during the high algae period in summer, and single point chlorination with ammonia after filtration (chlorine dosage of 1.1 mg/L) during the low algae period in winter.
更新日期/Last Update: 2023-06-01