矿井水的双盐流电氧化还原脱盐研究

Research on Double Salt Stream Electroredox Desalination of Mine Water

武哲 ¹明凯亮 ¹马品 ¹张洲洋 ¹聂静 ¹李海波¹

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作者信息

1. 宁夏大学材料与新能源学院,宁夏银川 750021
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摘要

通过双盐流电氧化还原脱盐(double salt stream electroredox desalination,DSSED)系统对模拟的宁东能源化工基地煤矿矿井水进行研究.主要分析在不同电压和电解质浓度下,DSSED系统处理6 000 mg/L NaCl溶液的能耗、脱盐速率和耐久性.结果表明,DSSED系统处理6 000mg/L NaCl溶液,能耗小于0.2kW·h/m3,最高平均脱盐速率可达197.5 µg/(cm2·min),DSSED系统的稳定性与重复性良好.在最佳工作条件下,DSSED系统在4 h内可将模拟的宁东能源化工基地煤矿矿井水(ρ=6 000 mg/L)降至淡水水平(ρ＜500 mg/L),平均脱盐速率达到160 µg/(cm2·min),离子的去除率均达到90％,能耗为0.397 kW·h/m3,可为宁东能源化工基地高盐水的处理提供新的解决思路.

Abstract

In this paper,a double salt stream electroredox desalination(DSSED)system is employed to treat simulated mine water from the Ningdong Coal Mine.Firstly,the energy consumption,salt removal rate,and durability of 6 000 mg/L NaCl saltwater treated by the DSSED under different voltages and electrolyte concen-trations are compared.The results indicate that the energy consumption of the DSSED system for treating 6 000 mg/L NaCl saltwater is less than 0.2 kW·h/m3,and the highest average salt removal rate can reach 197.5 μg/(cm2·min),demonstrating good stability and repeatability.Under the best working conditions,the DSSED system can desalinate simulated mine water from the Ningdong Coal Mine to freshwater level(＜500 mg/L)within 4 hours,achieving an average salt removal rate of 160 μg/(cm2·min),an ion removal rate of 90％,and an energy consumption of 0.397 kW·h/m3.This study provides a new solution for the treatment of high-concentration saltwater in the Ningdong area.

关键词

矿井水淡化/电氧化还原/[Fe(CN)6]3-/[Fe(CN)6]4-/高浓度盐水

Key words

mine water desalination/electroredox/[Fe(CN)6]3-/[Fe(CN)6]4-/high concentration saltwater

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出版年

2024

宁夏大学学报(自然科学版)

宁夏大学

宁夏大学学报(自然科学版)

CSTPCD

影响因子：0.377

ISSN：0253-2328

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