DEVICE AND METHOD FOR TREATMENT OF WATER-CONTAINING LIQUID Russian patent published in 2020 - IPC C02F9/00 C02F1/42 C02F1/44 C02F1/66 C02F1/68 

FIELD: water and air purification technology.

SUBSTANCE: invention relates to a device for conditioning a water-containing liquid. Device for conditioning of water-containing liquid includes at least one inlet; at least one liquid treatment device for treating liquid by ion exchange, including itself a cation-exchange material, at least part of which is in a hydrogen form, and is effective for releasing hydrogen during exchange for carbonate mineral cations in treated liquid, thereby increasing amount of free carbon dioxide; membrane filtration device and section intended for treatment of filtrate, produced by means of membrane filtration device, wherein section includes fluid processing device for dissolving at least one mineral, promoting carbonate hardness in water, in at least part of fluid passing through section, at least one of at least one inlet is connected to inlet of membrane filter device through at least one of at least one liquid treatment device for treating liquid by ion exchange, note here that said device generates essentially closed system so that degassing of carbon dioxide is stopped, and at least one membrane in membrane filtration device is permeable for carbon dioxide.

EFFECT: technical result of invention is increase of mineral content in liquid to required degree, which is treated by membrane filtration.

15 cl, 3 dwg