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Electrolytic purification and reconcentration of wash and rinse caustic solutions recovered from the regeneration of ion exchange resins.
Electrolytic purification and reconcentration of wash and rinse caustic solutions recovered from the regeneration of ion exchange resins.
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机译:电解纯化和浓缩从离子交换树脂再生中回收的洗涤和漂洗苛性碱溶液。
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摘要
Diluted and contaminated caustic solutions coming from the regeneration and washing of ion exchange resins may advantageously be purified and reconcentrated to be reused during the subsequent regeneration cycles, by subjecting the contaminated solution to electrolysis in the anodic compartment of an electrolytic cell provided with a cation-exchange membrane and recovering concentrated and purified caustic solution from the cathodic compartment of the cell, whereto demineralized water is fed. The process of the invention may advantageously be carried out in subsequent electrolytic stages in order to maintain optimum working conditions and a high overall efficiency of the process.
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