PVDF浸没式超滤膜市政污水再生处理运行研究  

Study on the Operation of PVDF Submerged Ultrafiltration Membrane in Municipal Wastewater Regeneration

作　　者：白鹤 林亚凯 张景隆 郑晓红 田野 张岩岗 BAI He;LIN Yakai;ZHANG Jinglong;ZHENG Xiaohong;TIAN Ye;ZHANG Yangang(Beijing Scinor Membrane Technology Co.Ltd.,100083;Beijing Key Laboratory of Membrane Materials and Engineering,Department of Chemical Engineering,Tsinghua University,100084;Beijing Scinor Water Technology Co.Ltd.,100083:Beijing,China)

机构地区：[1]北京赛诺膜技术有限公司,北京100083 [2]清华大学化学工程系,膜材料与工程北京市重点实验室,北京100084 [3]北京赛诺水务科技有限公司,北京100083

出　　处：《水处理技术》2021年第9期86-90,96,共6页Technology of Water Treatment

基　　金：国家科技支撑计划项目(2015BAE06B00)。

摘　　要：采用热致相分离(TIPS)法聚偏氟乙烯(PVDF)浸没式超滤膜,通过中试和工程项目应用考察了其在市政污水再生处理中的应用情况,研究了不同反洗条件和清洗条件对膜性能的影响,通过扫描电镜(SEM)、能谱分析(EDX)等技术手段进行污染物分析。结果表明,增加曝气量和反洗流量可以有效延缓膜污染,在没有维护性清洗条件下,运行通量可稳定在43.7 L/(m^(2)·h),而增加2~3 d/次的维护性清洗(MW)后运行通量可提高到46.3 L/(m^(2)·h),均高于原系统(聚丙烯膜)的运行通量。产水水质稳定,浊度基本稳定在30~40 mNTU。可为浸没式超滤膜在市政污水深度处理的运行提供指导。The polyvinylidene fluoride(PVDF)submerged ultrafiltration membrane was prepared via thermally induced phase separation(TIPS),the application situation in municipal sewage regeneration treatment was investigated through pilot test and engineering project application,and the effect of different backwashing conditions and cleaning conditions on membrane performance was studied.Contaminant analysis was carried out through technical means such as scanning electron microscopy(SEM)and energy spectrum analysis(EDX).The results showed that,increasing the aeration volume and backwash flow rate could effectively delay membrane fouling,and the operating flux could be stabilized at 43.7 L/(m^(2)·h)without maintenance washing(MW)conditions,while it could be increased to 46.3 L/(m^(2)·h)under the condition of 2~3 d interval MW,both were higher than the operating flux of the original system(polypropylene membrane).The product water quality was stable,and the turbidity was basically stable at 30~40 mNTU.It can provide guidance for the operation of submerged ultrafiltration membrane in the advanced treatment of municipal wastewater.

关 键 词：浸没式超滤膜 热致相分离法 市政污水 深度处理 OCWD 

分 类 号：X703.1[环境科学与工程—环境工程] TQ028.8[化学工程]