高锰酸钾-活性炭-陶瓷膜组合工艺净水效能

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摘要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.

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	于洪鉴
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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

Abstract：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/(m²·h), with the pretreatment methods of KMnO₄ 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 KMnO₄-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 KMnO₄ pre-oxidation or PAC adsorption, the combined KMnO₄-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 KMnO₄-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.

Key words： KMnO₄ oxidation PAC adsorption ceramic ultrafiltration membrane membrane fouling drinking water treatment

收稿日期: 2023-01-30

PACS:

X522

基金资助: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)

通讯作者: 李甜,助理教授,litian001@tongji.edu.cn E-mail: litian001@tongji.edu.cn

作者简介: 于洪鉴(2001-),男,山东临沂人,硕士研究生,主要从事功能膜材料制备和膜污染控制技术研究.发表论文7篇.2232786@tongji.edu.cn

引用本文:

于洪鉴, 李潇洒, 李甜, 董秉直, 夏圣骥. 高锰酸钾-活性炭-陶瓷膜组合工艺净水效能[J]. 中国环境科学, 2023, 43(8): 3909-3917. YU Hong-jiian, LI Xiao-sa, LI Tian, DONG Bing-zhi, XIA Sheng-ji. Water purification by combined process of KMnO₄-PAC-ceramic membrane filtration. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(8): 3909-3917.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2023/V43/I8/3909

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