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Studies on PVC ultrafiltration membrane for treating municipal sewage and control of membrane fouling

Authors： PENG Ting , SHI Zai-feng*, LIN Qiang*, WANG Xiang-hui, MOU Cui-qiong, XIONG Yu-qin

Units： College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, Hainan Province 571101

KeyWords： PVC ultrafiltration membrane; municipal sewage; pulse feeding; membrane fouling

ClassificationCode：TQ028 .8

year,volume(issue):pagination： 2015,35(2):75-81

Abstract：

In order to investigate the ability of PVC hollow fiber membrane for sewage treatment and control of membrane fouling, PVC membrane was directly applied to treat municipal sewage with cross-flow filtration. And, pulse feeding was used to reduce membrane fouling. Results showed that when municipal sewage was treated three times by PVC membrane, related indexes were up to the national standard of A for Class One, the turbidity is below 0.1NTU, CODcr decreases from 120.97mg/L to 47.34mg/L, the removal efficiencies is 60.9%, DOC changes from 8.95mg/L to 4.08mg/L, the removal efficiencies is 54.4%. And, rejection rate of bacteria is 99.6%. Experimental results also indicated that the stable membrane flux can be increased almost 200% by low frequency pulse feeding. So, it is confirmed that membrane fouling can be relieved effectively by using pulse feeding to enhance shear force on membrane surface.

Funds：

海南省科技兴海专项项目（XH201421）

AuthorIntro：

彭婷（1990-）,女,衡阳市人,硕士研究生,研究方向为膜法处理污水以及膜污染控制研究,

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