Impact of pre-coagulation on ultrafiltration process performance

被引：36

作者：

Kabsch-Korbutowicz, Malgorzata ^{[1
]}

机构：

[1] Wroclaw Univ Technol, Inst Environm Protect Engn, PL-50370 Wroclaw, Poland

来源：

DESALINATION | 2006年 / 194卷 / 1-3期

关键词：

ultrafiltration; natural organic matter; coagulation; membrane fouling;

D O I：

10.1016/j.desal.2005.09.031

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The objective was to study the effect of pre-coagulation on removal of natural organic matter (NOM) and on fouling of membranes during ultrafiltration (UF). The influence of a coagulant type and the water pH on the process performance was analyzed. Two UF membranes (cut-off 30 kD) made of regenerated cellulose and polyethersulphone were used in the tests. Three aluminium-based coagulants - Al-2(SO4)(3), NaAlO2 and polyaluminium chloride (PAC) - were applied. The nature of the aluminium-based coagulant and solution pH strongly affected the performance of the coagulation/UF process. Under a given dose of aluminium the best results, i.e., the highest NOM elimination and the lowest permeate flux decline, were observed when alum or a prehydrolized coagulant were used.

引用

页码：232 / 238

页数：7

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