Abstract:For lack of standard document guidance and insufficient management regarding application of UV-chlorine disinfection, a comprehensive evaluation model of UV-chlorine process operation management technology was established to obtain the optimal operating parameters of UV-chlorine process under certain conditions, thus providing guidance for operating municipal water supply plants. Based on the grey cluster correlation analysis model and the cost-benefit model, the efficiency evaluation model and economic benefit evaluation model of UV-chlorine process operation management technology were established respectively. The comprehensive efficiencies of process operation of 4 water plants (A, B, C and D) in different regions were evaluated in the aspects of technical efficiency and economic benefit. The results showed that the comprehensive efficiency of UV-chlorine process in C water plant was the highest, and the main process parameters were as follows: the UV and effective chlorine doses are 42.8 mJ·cm?2and 1.8 mg·L?1, respectively. The outcome of this study could provide guidance for tuning and operation of UV-chlorine process in water supply facilities. Key words:UV-chlorine disinfection process/ urban water supply plants/ grey clustering association analysis/ cost-benefit analysis.
图1紫外-氯工艺运行技术效能评价指标体系 Figure1.Performance evaluation index system of operating technology efficiency of UV/chlorine process
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School of Environment, Harbin Institute of Technology, Harbin 150090, China Received Date: 2021-01-08 Accepted Date: 2021-04-28 Available Online: 2021-11-18 Keywords:UV-chlorine disinfection process/ urban water supply plants/ grey clustering association analysis/ cost-benefit analysis Abstract:For lack of standard document guidance and insufficient management regarding application of UV-chlorine disinfection, a comprehensive evaluation model of UV-chlorine process operation management technology was established to obtain the optimal operating parameters of UV-chlorine process under certain conditions, thus providing guidance for operating municipal water supply plants. Based on the grey cluster correlation analysis model and the cost-benefit model, the efficiency evaluation model and economic benefit evaluation model of UV-chlorine process operation management technology were established respectively. The comprehensive efficiencies of process operation of 4 water plants (A, B, C and D) in different regions were evaluated in the aspects of technical efficiency and economic benefit. The results showed that the comprehensive efficiency of UV-chlorine process in C water plant was the highest, and the main process parameters were as follows: the UV and effective chlorine doses are 42.8 mJ·cm?2and 1.8 mg·L?1, respectively. The outcome of this study could provide guidance for tuning and operation of UV-chlorine process in water supply facilities.
以紫外-氯工艺出水水质为依据进行技术效能评价。按照科学性、典型性、可靠性及动态和静态相结合[5-6]的原则,通过文献分析确定可表征紫外-氯工艺效能的具体水质指标。共查阅相关文献85篇(其中32篇来自web of science,其余来自中国知网),对文献的统计分析结果表明:紫外-氯工艺主要用于微生物灭活(78篇)、消毒副产物控制(66篇)和出厂水余氯保证(19篇)等研究。根据文献量,选用能反映微生物灭活、消毒副产物控制效果的水质指标作为评价指标,因三卤甲烷类(46%)是氯化消毒饮用水中的主要氯化副产物[7],所以分别选取菌落总数和三卤甲烷浓度作为评价指标。余氯和总氯2个指标和管网水质安全密切相关,故将余氯和总氯的浓度一并作为评价指标。综合以上几点,构建紫外-氯工艺运行技术效能评价指标体系(见图1)。