WATER FILTRATION SYSTEM Russian patent published in 2019 - IPC C02F1/00 B01D27/14 B01D29/50 

FIELD: water treatment.

SUBSTANCE: water filtration system (100) comprises inlet (100a) for the source water, outlet (100b) for pure water, discharge (100c) for purified water; discharge (100d) for wastewater; combined filter cartridge (1) and return flow path (101). Combined filter cartridge (1) has first hole (10a), second hole (10c), third hole (10b), and fourth hole (10d). Outlet (100c) for purified water and outlet (100d) for wastewater are connected to third hole (10c). Device (2) for storing water is provided in at least one of fourth hole (10d) and the flow path connected to outlet (100b) for clean water. Return flow path (101) has a first end connected between first hole (10a) and inlet (100a) for the source water, and a second end connected between outlet (100d) for the waste water and third hole (10c).

EFFECT: invention makes it possible to improve the extraction coefficient of a water filtration system and provide a guarantee for the service life of a fine filtration cartridge.

11 cl, 1 dwg