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Oily Wastewater Treatment Using PVDF Membrane Modified with an Amphiphilic Polymer

Authors： WANG Minghua, WANG Li, FANG Shaoming, ZHAO Jihong, ZHANG Hongzhong*

Units： School of Material and Chemical Engineering, Zhengzhou University of Light Industry , Collaborative Innovation Center of Enviormental Pollution Control and Ecological Restoration, Henan Province, Zhengzhou 450001,China)

KeyWords： Poly(vinylidene fluoride); amphiphilic polymer; membrane modification; oily wastewater; treatment

ClassificationCode：TQ 028.8

year,volume(issue):pagination： 2015,35(3):76-80

Abstract：

Abstract：Poly(vinylidene fluoride) (PVDF) has widely used as a material of membranes in microfiltration (MF) and ultrafiltration (UF) due to their excellent processability, chemical resistance, well-controlled porosity, and good thermal property. However, there are still some problems for PVDF membranes which limit the further developments and applications of them especially in the areas of purification and separation of aqueous solution systems such as oily wastewater and protein-containing solutions. In this paper, the PVDF material was blended with an amphiphilic polymer and hydrophilic modification of PVDF membranes was prepared by Loeb-Souriraian (L-S) phase inversion method. Then application of the membrane in oily wastewater treatment was detected. The permeation properties measurement of the membrane for wastewater with the oil concentration variable from 80mg/L to 240mg/L indicated that the highest rejection ratio of the modified membrane was up to 97.0% while the pure PVDF membrane was 89.1%. When the attenuation stabled, the permeation flux of the modified membrane and the pure PVDF membrane were around 50 L/m2·h and 20 L/m2·h, respectively.

Funds：

国家水体污染控制与治理科技重大专项（2012ZX07204-004）；河南省高校科技创新人才支持计划项目（2013HASTIT031）.

AuthorIntro：

王明花（1981-）,女,江苏省徐州市人,硕士,讲师,主要从事水处理功能材料的研究, E-mail:wangminghua @zzuli.edu.cn. *通讯作者, E-mail: zhz@zzuli.edu.cn.

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