高锰酸钾预氧化和粉末活性炭吸附增强陶瓷膜过滤性能研究  

Ceramic membrane filtration performance enhancement with KMnO pre-oxidation and PAC adsorption

作　　者：李甜[1,2,3,4] 于洪鉴 李潇洒[1] 夏圣骥 董秉直 LI Tian;YU Hongjian;LI Xiaosa;XIA Shengji;DONG Bingzhi(College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China;State Key Laboratory of Pollution Control and Resource Reuse,Shanghai 200092,China;Key Laboratory of Yangtze River Water Environment,Ministry of Education,Shanghai 200092,China;Key Laboratory of Water Supply,Water Saving and Water Environment Treatment for Towns in the Yangtze River Delta,Ministry of Water Resources,Shanghai 200092,China)

机构地区：[1]同济大学环境科学与工程学院,上海200092 [2]污染控制与资源化研究国家重点实验室,上海200092 [3]长江水环境教育部重点实验室,上海200092 [4]水利部长三角城镇供水节水及水环境治理重点实验室,上海200092

出　　处：《给水排水》2023年第6期9-16,共8页Water & Wastewater Engineering

基　　金：国家自然科学基金(52100012);上海市自然科学基金(20ZR1460800)。

摘　　要：采用高锰酸钾(KMnO4)预氧化、粉末活性炭(PAC)吸附和KMnO4-PAC联合工艺来提高平板陶瓷膜的过滤性能。试验过程中,采用浸没式平板陶瓷膜,在恒定通量为120L/(m2·h)的条件下过滤三好坞原水,探究了不同预处理方式对有机物去除效果和膜污染控制效果,并在此基础上探究了平板陶瓷膜的膜污染模式。研究结果表明KMnO4-PAC联用工艺预处理时陶瓷膜过滤三好坞原水的有机物去除效果最好,UV254和DOC去除率分别为11.3%和52.8%,膜污染控制效率达43.5%。在KMnO4-PAC联用预处理工艺下陶瓷膜过滤三好坞原水的膜污染总阻力、膜可逆污染阻力、膜不可逆污染阻力均有明显的下降,膜污染总阻力下降率为50.4%。膜污染模式分析结果表明,采用KMnO4-PAC联用工艺后,陶瓷膜的膜污染模式从滤饼层过滤转变为中间堵塞。In this study,KMnO_(4)pre-oxidation,powdered activated carbon(PAC)adsorption and the combined KMnO_(4)-PAC process were adopted to improve the filtration performance of ceramic ultrafiltration membrane(CUF).During the experiment,the CUF membrane was used to filter the raw water of Sanhaowu Lake with a constant permeate flux of 120 L/(m^(2)·h).The organ-ics removal and membrane filtration performance were examined systematically.In addition,the membrane filtration mode of the CUF was also explored.The results showed that the KMnO_(4)-PAC-CUF process exhibited the highest organics removal performance,with the UV254 and DOC removal ratios of 11.3%and 52.8%,respectively.While the membrane fouling index decreased 43.5%.With KMnO_(4)-PAC-CUF process,the total membrane fouling resistance,reversible mem-brane fouling resistance and irreversible membrane fouling resistance of CUF filtration of raw water in Sanhaowu Lake all decreased significantly,with the total membrane fouling resistance decreasing by 50.4%.The membrane fouling mode analysis of CUF indicated that it changed from cake layer filtration mode to intermediate blocking one after KMnO_(4)-PAC process was adopted.

关 键 词：平板陶瓷膜 给水处理 活性炭 高锰酸钾 膜污染 

分 类 号：X522[环境科学与工程—环境工程]