Separation of natural organic matter and sodium chloride for salt recovery purposes in zero liquid discharge

被引：20

作者：

van Linden, Niels ^{[1
]}

Shang, Ran ^{[1
]}

Stockinger, Georg ^{[2
]}

Heijman, Bas ^{[1
]}

Spanjers, Henri ^{[1
]}

机构：

[1] Delft Univ Technol, Fac Civil Engn & Geosci, Stevinweg 1, NL-2628 CN Delft, Netherlands

[2] Shell Global Solut Int BV, Grasweg 31, NL-1031 HW Amsterdam, Netherlands

来源：

WATER RESOURCES AND INDUSTRY | 2020年 / 23卷

关键词：

Brine; Separation; Nanofiltration; Electrodialysis; Ion exchange; SALEX; ANION-EXCHANGE MEMBRANES; ION-EXCHANGE; WASTE-WATER; NANOFILTRATION; REMOVAL; TRANSPORT; ELECTRODIALYSIS; FRACTIONATION; MANAGEMENT; EFFLUENTS;

D O I：

10.1016/j.wri.2019.100117

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

The application of zero liquid discharge (ZLD) results in the generation of solid residual streams, which are often not fit for reuse. In this study, we assessed the separation of natural organic matter (NOM) and sodium chloride (NaCl) by nanofiltration (NF), electmdialysis (ED) and ion exchange (IEX) in reverse osmosis brine (RO-brine) and by the extraction of impurities from salt (SALEX) in the generated mixed solids of a full-scale ZLD water treatment plant. The NaCl recovery by NF, ED and IEX ranged 69-99% and the rejection of NOM ranged 18-19%, 43-65% and 53-76%, respectively. The recovery of NaCl by SALEX ranged 52-99%, while the rejection of NOM ranged 59-92%. The results show that NOM and NaCl can be separated both in RO-brine and mixed solids, opening opportunities for recovery of reusable salt from brines in ZLD.

引用

页数：11

共 29 条

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