基于NaOCl扩散行为的膜清洗条件影响及优化

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Abstract In this work, bovine serum albumin (BSA) and sodium alginate (SA) were used as model foulants to investigate the impact factors of membrane cleaning process based on the enhancement of NaOCl diffusion. The impact of the key parameters on cleaning efficiency was clarified, and a novel NaOCl cleaning method based on diffusion enhancement through additives was established. In batch membrane cleaning experiments, the effects of different concentrations of active chlorine, pH, and concentrations of SDS on the membrane cleaning process based on the diffusion enhancement of NaOCl were investigated by analyzing the residual foulants on membrane surface, the eluted foulant particle size and the dynamic morphology of the fouled membrane. The results confirmed the mechanisms under different cleaning conditions, showing that the membrane cleaning efficiency was over 95% at 200mg/L Cl_T, pH 11, and 0.4mmol/L SDS.

Key words： membrane fouling membrane cleaning NaOCl Wastewater treatment

Received: 31 December 2019

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X703

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	Articles by authors
	QI Kang-quan
	WANG Xue-ye
	CAI Ke-yu
	WANG Zhi-wei

Cite this article:

QI Kang-quan,WANG Xue-ye,CAI Ke-yu等. Optimization of the influencing factor of membrane cleaning process based on the NaOCl diffusion[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(8): 3408-3416.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I8/3408

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