FIELD: filter materials. SUBSTANCE: filter material may be used purification of household potable and industrial waste water of enterprises of various industries. Deferrization filter material contains, wt.%: chalk, 13-36; pyrolusite, 10-33; water glass, 48.96-52.18; sodium fluosilicate, 1.82-5.04. EFFECT: higher deferrization and alkalization effect. 1 tbl
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