| 摘要 |
FIELD: water treatment. ^ SUBSTANCE: filter charge contains natural-origin material, inert polymer material, low-basicity anionite impregnated with humus substances, and high-acidity cationite, each of compounds having specified density and being used in specified proportion. ^ EFFECT: increased efficiency in removal of rigidity salts, iron manganese, aluminum salts, and organic impurities. ^ 7 cl, 1 tbl, 3 ex |
