Nanofiltration as a final step towards textile wastewater reclamation

被引：50

作者：

Alcaina-Miranda, M. I. ^{[1
]}

Barredo-Damas, S. ^{[1
]}

Bes-Pia, A. ^{[1
]}

Iborra-Clar, M. I. ^{[1
]}

Iborra-Clar, A. ^{[1
]}

Mendoza-Roca, J. A. ^{[1
]}

机构：

[1] Univ Politecn Valencia, Dept Chem & Nucl Engn, Valencia 46022, Spain

来源：

DESALINATION | 2009年 / 240卷 / 1-3期

关键词：

Nanofiltration; Ultrafiltration; Textile industry; Water reuse; REUSE; MEMBRANES; EFFLUENTS; REDUCTION; COD;

D O I：

10.1016/j.desal.2008.02.028

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Water scarcity makes industrial wastewater reuse necessary, especially ill those industries characterized by both high water consumptions and extremely Polluted effluents as textile industries. Membrane technologies are very efficient to treat industrial effluents for water reuse Successfully, since their application entails important reductions in Pollutant concentration. In the present work, a direct treatment of a textile industry effluent by means of a combination Of Ultrafiltration (UF) followed by a final nanofiltration (NF) stage is presented. Two different NF membranes were tested in order to compare their behaviors. For that, the influence of the feed water pH and transmembrane pressure (TMP) of the NF process were investigated. The UF results showed that the highest permeate fluxes were achieved at pH 11. Related to NF experiments, NF270 reached for the same operational conditions higher fluxes and salts rejection Values than the Duraslick NF. No influence of pH was found for the permeate flux. However, the pH effect was manifest for the salts rejection. Although COD, color, and turbidity removals were high ill all tests, Duraslick NF showed an average slightly better removal of COD and color. The results obtained confirm the viability of this treatment for water reuse in most of the different processes carried Out in these kinds of industries.

引用

页码：290 / 297

页数：8

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