基于微气泡阻垢的纳滤制备直饮水工艺优化  

Optimization of Nanofiltration for Preparation of Direct Drinking Water Based on Microbubble Scale Inhibition

作　　者：孙宇 王永磊[1] 沈虎 刘宝震 于海洋 安呈泰 聂荣飞 李晓峰 SUN Yu;WANG Yong-lei;SHEN Hu;LIU Bao-zhen;YU Hai-yang;AN Cheng-tai;NIE Rong-fei;LI Xiao-feng(School of Municipal and Environmental Engineering,Shandong Jianzhu University,Jinan 250101,China;Jinan Municipal Engineering Design InstituteCo.Ltd.,Jinan 250003,China;Shandong Haibang Water Technology Co.Ltd.,Jinan 250013,China;Shandong Jianzhu University Design Group Co.Ltd.,Jinan 250013,China;Shandong Silk Road Investment and Development Co.Ltd.,Jinan 250013,China)

机构地区：[1]山东建筑大学市政与环境工程学院,山东济南250101 [2]济南市市政工程设计院<集团>有限责任公司,山东济南250003 [3]山东海邦水务科技有限公司,山东济南250013 [4]山东建筑大学设计集团有限公司,山东济南250013 [5]山东省丝路投资发展有限公司,山东济南250013

出　　处：《中国给水排水》2025年第3期43-49,共7页China Water & Wastewater

基　　金：山东省重点研发计划项目(2023TZXD019);国家重点研发计划项目(2022YFC3203704、2022YFC3203705)。

摘　　要：针对纳滤工艺制备高品质直饮水技术存在的工艺参数复杂、膜污染等突出问题,引入了微气泡阻垢的方法对该技术进行参数优化和中试验证。结果表明,最优工况的进水pH为7.34、进水压力为0.50 MPa、回收率为13.501%。在中试过程中,纳滤技术对电导率与浊度的去除率分别达到80%和50%以上,对TOC和UV254的去除率分别为67%~71%、75%~81%,对二价离子的去除率在94%以上。同时微气泡的阻垢作用可以减少纳滤膜的清洗频率,有利于维持纳滤膜的完整性并延长膜的使用寿命,降低管道直饮水处理成本。In light of the significant challenges associated with nanofiltration for producing highquality direct drinking water,such as complex process parameters and membrane fouling,this study introduced the microbubble scale inhibition method to optimize the technological parameters and carried out a pilot test.The optimal operating conditions were as follows:the influent pH was 7.34,the influent pressure was 0.50 MPa,and the recovery rate was 13.501%.The pilot test results indicated that the nanofiltration achieved removal efficiencies exceeding 80% for conductivity and 50% for turbidity.The removal efficiencies for TOC and UV254 were in the ranges of 67% to 71% and 75% to 81%,respectively.Additionally,the rejection rate for bivalent ions surpassed 94%.Simultaneously,the scale inhibition effect of microbubbles could decrease the cleaning frequency of nanofiltration membranes,thereby preserving their integrity,extending their service life,and reducing the operational costs associated with pipeline direct drinking water treatment.

关 键 词：纳滤膜 直饮水 微气泡 运行优化 阻垢作用 

分 类 号：TU991[建筑科学—市政工程]