Recovery of water and reusable salt solution from reverse osmosis brine in textile industry: A case study

IF 4.5 3区工程技术 Q1 WATER RESOURCES

Water Resources and Industry Pub Date : 2022-06-01 DOI:10.1016/j.wri.2022.100174

Recep Partal , Irfan Basturk , Selda Murat Hocaoglu , Ahmet Baban , Ecem Yilmaz

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Abstract

Textile industry is one of the major water-consuming sectors; therefore, developing methods for reusing water is essential. Processes including reverse osmosis (RO) have gained momentum recently and been widely used. However, concentrated streams (brine) generated from RO must be managed properly. In this study, a pilot-scale brine treatment system containing ozone oxidation, nanofiltration (NF), RO and ion exchange (IEX) was developed and operated to recover a high quality process water and salt solution to be reused in dyeing processes. It was revealed that 77% of the water and 66% of the salt solution (as NaCl) can be recovered and brine discharge can be reduced. With full-scale operation for one year, it is possible to achieve cost-savings by 176,256 USD with 115,000 m³ reused water and by 37,000 USD with 680 tons of recovered NaCl. Recovery of brine makes it possible to achieve sustainable production and zero liquid discharge concepts.

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纺织工业反渗透盐水回收水和可重复使用盐溶液的实例研究

纺织业是主要的耗水部门之一；因此，开发水的再利用方法至关重要。包括反渗透（RO）在内的工艺最近获得了发展势头，并得到了广泛应用。但是，反渗透产生的浓物流（盐水）必须妥善管理。在本研究中，开发并运行了一个包含臭氧氧化、纳滤（NF）、反渗透和离子交换（IEX）的中试盐水处理系统，以回收高质量的工艺用水和盐溶液，用于染色工艺。结果表明，77%的水和66%的盐溶液（以NaCl形式）可以回收，并且可以减少盐水排放。通过一年的全面运营，115000 m3的回用水可以节省176256美元，680吨的回收NaCl可以节省37000美元。盐水的回收使实现可持续生产和零液体排放概念成为可能。

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来源期刊

Water Resources and Industry Social Sciences-Geography, Planning and Development

CiteScore

8.10

自引率

5.90%

发文量

审稿时长

75 days

期刊介绍： Water Resources and Industry moves research to innovation by focusing on the role industry plays in the exploitation, management and treatment of water resources. Different industries use radically different water resources in their production processes, while they produce, treat and dispose a wide variety of wastewater qualities. Depending on the geographical location of the facilities, the impact on the local resources will vary, pre-empting the applicability of one single approach. The aims and scope of the journal include: -Industrial water footprint assessment - an evaluation of tools and methodologies -What constitutes good corporate governance and policy and how to evaluate water-related risk -What constitutes good stakeholder collaboration and engagement -New technologies enabling companies to better manage water resources -Integration of water and energy and of water treatment and production processes in industry