In chemical water treatment systems, for many reasons, both anion and cation exchange resins are contaminated, especially calcium, iron, and organic matter. The performance of the discharged resin is degraded, the working exchange capacity is reduced, and the amount of ion leakage is increased, which affects the quality of the effluent. Since the structure of the resin is not damaged, the exchange performance can be restored by appropriate treatment. At the same time, it is necessary to analyze the situation in which the resin is prone to contamination during use, and take reasonable measures to prevent it.
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