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Study on the anti-fouling properties of novel five-bore PVDF blend modified membranes

Authors： HUANG Jianping 1,2, SHAO Yumin1, LIU Lili2, MA Chunyan1,*,LIU Na2, XI Danli1,YAN Kelu1

Units： 1. Department of Environmental Science and Engineering, College of Chemistry, Chemical Engineering & Biotechnology, Donghua University, Shanghai 200051, China2. Department of Environmental and Civil Engineering North China University of Water Conservancy & Hydroelectric Power, Zhengzhou 450011, China

KeyWords： five-bore blend membrane; critical flux; filtration experiment; anti-fouling property; surface water treatment

ClassificationCode：TQ

year,volume(issue):pagination： 2012,32(3):64-69

Abstract：

The morphologies for of novel five-bore PVDF blend modified membranes were observed by SEM. The water contact angle and critical fluxes of different novel five-bore PVDF hollow fiber membranes were measured. Then the filtration experiments at sub-critical flux and super-critical flux of No.1(PVDF/PMMA/TPU)blend modified membrane and No.2(PVDF/PMMA/PVC) blend modified membrane were carried out performed. The results showed that the PVDF blend modified membranes possessed excellent microstructure and the microstructure of No.1 was better. The contact angle of No.1 blend membrane was lower than that of No.2 blend membrane. The critical fluxes of two blend membranes were 10 L/(m2?h) and 14 L/(m2?h), respectively. The anti-fouling property of No.1 blend membrane wasere better than that of No.2 blend membrane. The operating characteristic under sub-critical flux was more stable than that of under super-critical flux. Two blend membranes were used to treat ground-surface water under sub-critical flux and the effects of that with coagulation as pretreatment were studied. The results showed that the wastewater treatment performance of coagulation-ultrafiltration combination process was better than that of ultrafiltration process alone, and the wastewater treatment performance of No.1 blend membrane was better than that of No.2 blend membrane.

Funds：

国家科技重大专项“水体污染控制与治理”(2009ZX07210-002)；上海市自然科学基金项目（11ZR1400800）

AuthorIntro：

作者简介：黄健平（1968-），女，河南郑州人，博士，副教授，硕导，主要从事膜材料、水污染控制技术、环境评价等研究。＜huangjianpingh@yahoo.cn＞ * 通讯联系人＜machunyan@dhu.edu.cn＞

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