摘要
超滤和纳滤双膜工艺具备突出的应对饮用水突发污染的能力。通过超滤和纳滤的灵活配置,常规运转下,超滤纳滤并联运行、掺混供水,可以提高出水水质;在应急模式下,超滤纳滤串联运行,保障稳定的突发污染应急处理能力,实现"减量保质"的间断性应急供水,避免城市出现连续断水的恐慌。综合双膜的工艺的基建成本以及生活用水直接饮用占比,超滤的供水规模可控制在纳滤的2~3倍。本文可为饮用水突发污染控制及纳滤膜技术应用提供参考。
The hybrid ultrafiltration(UF)/nanofiltration(NF)process can provide removal capacity for a variety of emergeney pollutants.Without the emergency water pollution,the UF and NF can be operated in a parallel manner with UF and NF permeate blended so as to improve water quality.In case of the emergency pollution,the UF and NF can be operated in series to provide a better water treatment performance,so that the emergency water supply can be maintained at a smaller quantity without compromising water quality.In this way,the water supply would not be continuously cut off and the social panic about water scarcity can be minimized.Taking the capital costs of UF/NF process and ratio of direct drinking water in total water supply,it is recommended to establish the dual-membrane system with the capacity of UF being 2~3 time larger than that of NF.This paper could provide a reference for emergency water pollution control and application of NF membrane technology.
作者
瞿芳术
余华荣
朱学武
杜星
李圭白
梁恒
Qu Fangshu;Yu Huarong;Zhu Xuewu;Du Xing;Li Guibai;Liang Heng(School of Civil Engineering,Guangzhou University,Guangzhou 510006,China;School of Environment,Harbin Institute of Technology,Harbin 150090,China;School of Civil Engineering,Guangdong University of Technology,Guangzhou 510006,China)
出处
《给水排水》
CSCD
北大核心
2020年第S02期189-194,共6页
Water & Wastewater Engineering
基金
国家自然科学基金(51878211)
广东省自然科学基金(2019A1515012232)
关键词
突发水污染
给水厂
应急处理
超滤
纳滤
Emergency water pollution
Drinking water treatment plant
Emergency water treatment
Ultrafiltration
Nanofiltration