南京工业大学学报（自然科学版）2013，Vol.35Issue(1)：85-90,6.DOI:10.3969/j.issn.1671-7627.2013.01.018
聚醚砜中空纤维超滤膜的化学清洗
Chemical cleaning of polyethersulfone hollow fibre UF membranes
摘要
Abstract
Membrane cleaning was investigated on fouled membranes supplied by a power plant. The chemical composition and the distribution of contaminants were analyzed by optical microscope, scanning electron microscope(SEM) , Fourier transform infrared spectroscopy (FTIR) , and energy dispersive X-ray spectroscopy(EDX). Results showed that the ultrafiltration existed organic and inorganic contaminants. The outer layer consists mainly of inorganic substances and the inner layer consists organic ones. Various chemicals were explored for their cleaning effects including HCl, NaOH, EDTA and NaClO. Ethylene di-amine tetraacetic acid (EDTA) and NaClO showed higher flux recovery. The cleaning time and the temperature were further optimized for EDTA and NaClO systems. The combination of EDTA and NaClO and their application sequence were compared. Results showed that cooperative effects on combination of EDTA and NaClO with flux recovery depended on the cleaning sequence. The highest flux of 1 780 L/(m2·h) was observed when the membranes were treated with EDTA followed by NaClO treatment.关键词
化学清洗/超滤膜/EDTA/NaClOKey words
chemical cleaning/ ultrafiltration/ EDTA/ NaClO分类
化学化工引用本文复制引用
马新雷,宋莹,李雪梅,何涛..聚醚砜中空纤维超滤膜的化学清洗[J].南京工业大学学报（自然科学版）,2013,35(1):85-90,6.基金项目
国家重大基础研究计划(973计划)(2009CB623402) （973计划）
国家自然科学基金(20936087) （20936087）
江苏省科技厅支撑计划(BE2010013) （BE2010013）
中以战略合作基金(2010-01) （2010-01）
