OPTIMIZATION OF NATURAL ZEOLITE CLINOPTILOLITE REGENERATION IN A TWO-STAGE GROUNDWATER TREATMENT SCHEME
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Abstract
The article presents the results of experimental studies aimed at determining optimal regeneration parameters of natural clinoptilolite zeolite using a sodium chloride solution. The research was conducted within a two-stage technological scheme for groundwater treatment characterized by elevated concentrations of iron, manganese, ammonium nitrogen, and high permanganate oxidizability. The influence of secondary aeration intensity on the operating exchange capacity of zeolite was established. Optimal specific NaCl consumption rates (300–500 g/g-eq depending on the initial ammonium concentration) were determined, ensuring maximum filter run duration. It was shown that the application of secondary aeration with an air-to-water ratio of 1:1 (by volume) makes it possible to reduce the consumption of regeneration solution by 2–5 times compared to manufacturers’ recommendations.
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References
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