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- Title
Studies on the Desalination of Gold-Metallurgy Brine with Pretreatment and Electrodialysis Reversal at Pilot-Scale Level.
- Authors
Zhang, Manman; Shen, Chanchan; Tian, Xiaozhong; Liu, Yanjie; Li, Xue
- Abstract
The gold-metallurgy brine was treated by electrodialysis reversal (EDR) which was investigated as the main stage of a pretreatment and EDR system. The sophisticated pretreatment included precipitation, ultrafiltration, adjusting pH and secondary filter to condition the quality of feed water to meet the EDR requirements, that make a key role on reducing the membrane fouling. In this pilot scale experiment, the gold-metallurgy brine with 79.7 g/L was desalinated and concentrated at a current density of 220.9 A/m2. The dilute was treated by EDR yielding 60% recovery. Meanwhile the concentrated solution was around 150 g/L, which can be reused in the system for size mixing respectively. The EDR desalination system has stably operated for 40 days with the dilute of low Ca2+, SO42− and Cl− concentrations to avoid gypsum crystallization blocking in pipelines under low temperature, and reducing corrosion of the cast iron pipe. The DC power consumption of the pilot EDR was about 0.55 kW•h per kilogram of salinity. The EDR showed an advantage of practical applications in desalination of high concentration wastewater to reuse the otherwise waste in industry system.
- Subjects
ELECTRODIALYSIS; SALINE water conversion; SALT; CAST-iron; IRON corrosion; WATER quality
- Publication
Water, Air & Soil Pollution, 2024, Vol 235, Issue 6, p1
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-024-07178-2