高锰酸钾-活性炭-陶瓷膜组合工艺净水效能

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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

Received: 30 January 2023

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X522

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	Articles by authors
	YU Hong-jiian
	LI Xiao-sa
	LI Tian
	DONG Bing-zhi
	XIA Sheng-ji

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YU Hong-jiian,LI Xiao-sa,LI Tian等. Water purification by combined process of KMnO₄-PAC-ceramic membrane filtration[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(8): 3909-3917.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I8/3909

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