№11|2012

POTABLE WATER SUPPLY

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UDC 628.161.3

FESENKO L. N., Ignatenko S. I., Fedotov R. V.

Desiliconization of drinking water by modified media filtration

Summary

A brief evaluation of water desiliconization technologies is given. The results of experimental investigations of eliminating silicic acid compounds from water by deposition on aluminum and iron hydroxides, contact coagulation in a granular bed and modified media filtration are presented. Activated aluminum oxide filtering media modified with 0.5% sodium aluminate solution attains twice as much sorption capacity (compared to media regeneration with alkali) in relation to orthosilicates. Herein 95–97% desiliconization efficiency is ensured alongside with simultaneous reduction of water hardness. Non-waste technology of underground water desiliconization with modifying chemical reuse and generation of crystalline dewatered alumosilicate used in ceramics production as process wastes was developed.

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