高锰酸钾-活性炭-陶瓷膜组合工艺净水效能  

Water purification by combined process of KMnO_(4)-PAC-ceramic membrane filtration

作　　者：于洪鉴 李潇洒 李甜[1,2,3,4] 董秉直 夏圣骥[1,2,3] YU Hong-jiian;LI Xiao-sa;LITian;DONG Bing-zhi;XIA Sheng-ji(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]同济大学污染控制与资源化研究国家重点实验室,上海200092 [3]同济大学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：《中国环境科学》2023年第8期3909-3917,共9页China Environmental Science

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

摘　　要：采用浸没式平板陶瓷膜,在恒定通量为120L/(m^(2)·h)的条件下过滤腐殖酸、牛血清蛋白和海藻酸钠3种模型有机污染物配水,探究了高锰酸钾预氧化、活性炭吸附与联用工艺预处理方式对水中DOC和模型污染物荧光区域积分标准体积的去除效果以及对膜污染相关指标(比跨膜压差、膜污染指数、膜过滤阻力等)的改善效果.研究结果表明高锰酸钾-活性炭-陶瓷膜组合工艺对3种模型污染物的去除效果最好,对腐殖酸、牛血清蛋白和海藻酸钠的去除率分别为50.9%、61.0%和94.2%.在膜污染控制方面,高锰酸钾-活性炭联用预处理相较于单独高锰酸钾预氧化、活性炭吸附预处理,对陶瓷膜的膜污染控制效率更高,过滤腐殖酸、牛血清蛋白和海藻酸钠配水时的膜污染速率分别为13.0%、28.0%和4.5%.其中高锰酸钾-活性炭联用预处理能有效缓解陶瓷膜过滤牛血清蛋白和海藻酸钠配水时的膜可逆污染,可逆污染阻力下降率分别为20.5%和21.4%,因而能更好地控制膜污染.Submerged flat sheet ceramic ultrafiltration membrane(CUF)was used to filtrate water samples with model foulants of humic acid(HA),bovine serum albumin(BSA)and sodium alginate(SA)under the constant flux of 120L/(m^(2)·h),with the pretreatment methods of KMnO_(4) pre-oxidation,activated carbon(PAC)adsorption and the combined process.The effect on the removal of DOC and the integral standard volume of the model pollutants in the fluorescence area,and the membrane filtration enhancement on the fouling related indicators(specific transmembrane pressure difference,membrane fouling index,membrane filtration resistance,etc.)were investigated.The combined KMnO_(4)-PAC-ceramic membrane filtration process had the best removal performance on the three model pollutants of HA,BSA and SA,with the DOC removal ratios of 50.9%,61.0% and 94.2%,respectively.In terms of membrane fouling control,compared with individual KMnO_(4) pre-oxidation or PAC adsorption,the combined KMnO_(4)-PAC pretreatment process exhibited higher membrane fouling control efficiency,with fouling rates of 13.0%,28.0% and 4.5% for HA,BSA and SA,respectively.In addition,the combined KMnO_(4)-PAC pretreatment process could effectively alleviate the reversible membrane fouling in the filtration of BSA and SA,with the decrease ratios of reversible filtration resistance of 20.5% and 21.4%,respectively,thus to better reduce membrane fouling.

关 键 词：高锰酸钾氧化 活性炭吸附 陶瓷膜 膜污染 饮用水处理 

分 类 号：X522[环境科学与工程—环境工程]