METHOD OF PURIFYING WATER FROM WATER-SOLUBLE COMPOUNDS OF HEAVY METALS USING CHEMICAL REAGENTS Russian patent published in 2025 - IPC C02F1/62 B01J20/12 

FIELD: water treatment.

SUBSTANCE: invention relates to purification of water from water-soluble compounds of heavy metals and can be used in technology of purification from water-soluble compounds of heavy metals of natural water of household and drinking water supply, treatment of domestic waste water and industrial effluents. To purify water from water-soluble compounds of heavy metals, the reagent is introduced in the form of a two-layer charge, wherein the upper layer contains the following, wt.%: magnesium oxide 90-97, mica-montmorillonite clay 3-10, water – balance; and second lower layer contains, wt.%: magnesium carbonate 10-15, mica-montmorillonite clay 85-90, water – the rest. Thickness of upper layer of loading is (0.3-0.5)*t, where t is thickness of lower layer.

EFFECT: increasing the efficiency of water purification from heavy metals while maintaining the hydrogen index value within the standard range of pH=6.8-7.5.

2 cl, 2 tbl