Recovery of dairy industry wastewaters by reverse osmosis. Production of boiler water

被引：32

作者：

Suarez, Adrian ^{[1
]}

Fidalgo, Tatiana ^{[1
]}

Riera, Francisco A. ^{[1
]}

机构：

[1] Univ Oviedo, Dept Chem & Environm Engn, E-33006 Oviedo, Spain

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2014年 / 133卷

关键词：

Water reuse; Boiler water; Flash cooler condensates; Dairy industry; Reverse osmosis; WASTE-WATER; MEMBRANE PROCESSES; VOLATILE COMPOUNDS; FOOD; REUSE; NANOFILTRATION; MILK; PERFORMANCE; REDUCTION; FLAVOR;

D O I：

10.1016/j.seppur.2014.06.041

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Low-pollutant dairy condensates from flash coolers of a direct UHT plant were processed through a RO spiral-wound membrane (8.4-m(2) surface area) in a pilot plant in order to obtain high-quality boiler water. Conductivity, chemical oxygen demand and pH were used as the main parameters to evaluate the permeate quality. Firstly, discontinuous tests were performed with the objective of checking the membrane behaviour under different process conditions. Then, the information obtained was used to perform long-term continuous trials. Conductivity and chemical oxygen demand reductions up to 98.2% and 97.8%, respectively were achieved. To improve the organic matter removal, an activated carbon column at the outlet of the permeate line was used. A post-treatment would be necessary to adjust the permeate to the final pH. Te return of investment of an installation to treat 20 m(3)/h condensates was estimated as being within 2.2 years. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：204 / 211

页数：8

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