应用于Anammox-MBR的尼龙织布亲水改性研究

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Abstract Nylon fabric mesh was modified via coating polyvinyl alcohol (PVA). The pristine and modified nylon fabric mesh was subjected to different characterizations, and the water permeability was investigated as well. Furthermore, the fouling resistance of nylon fabric mesh was discussed through BSA solution filtration tests. In addition, the leaching of soluble organic carbon (DOC) was evaluated during the application of the modified nylon fabric mesh. In this study, the PVA coating concentration of 3% and coating thickness of 250μm were preferred. After modification, the water flux increased by 85.0%, and the BSA retention rate increased from 6.0%±0.5% to 7.2%±0.7%. Besides, the flux recovery ratio increased from 90.0% to 96.1%. Meanwhile, the reversible fouling ratio and irreversible fouling ratio has risen and fallen respectively, and the main form of pollution was reversible pollution. It should be noted that in order to avoid the increase of DOC in the reaction caused by the leaching of the modified coating, which will cause irreversible harm to the activity of anammox bacteria, it is suggested that the prepared modified nylon fabric mesh should be soaked in water or treated in dynamic leaching for 3days or so before application.

Key words： nylon fabric mesh membrane fouling hydrophilic modification anammox membrane bioreactor

Received: 09 May 2020

PACS:

X703.1

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	Articles by authors
	ZHOU Hui
	SHI Qin
	WANG Tian-bei
	FAN Yu-fei
	WANG Ya-yi

Cite this article:

ZHOU Hui,SHI Qin,WANG Tian-bei等. Hydrophilic modification of nylon fabric mesh applied in Anammox-MBR[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(12): 5253-5259.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I12/5253

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