SOLID TWO-LAYERED MOULDED PRODUCT FOR WATER PURIFICATION Russian patent published in 2010 - IPC C02F1/56 C02F1/76 C02F1/52 

FIELD: chemistry.

SUBSTANCE: solid moulded product for water purification has at least two layers, where the first layer has at least one flocculation system and one aeration system, and the second layer has at least one disinfectant agent which releases chlorine upon contact with water, and one excipient for the disinfectant agent. The excipient releases the disinfectant agent into the water at a regulated rate such that, the excipient - disinfectant agent mixture releases from 0.1 to 100 mg/l active chlorine per hour.

EFFECT: invention avoids need for filtering purified water and excess expenses on disinfectant agent when purifying and disinfecting drinking water.

18 cl, 3 tbl, 5 ex