METHOD FOR PRODUCING DRINKING WATER FROM NATURAL FRESH SOURCES Russian patent published in 2018 - IPC C02F9/08 C02F1/34 C02F1/78 B01D61/22 

FIELD: technological processes.

SUBSTANCE: invention relates to the field of water treatment and can be used for the preparation of drinking water from natural sources of fresh water. Method of preparing drinking water from natural fresh sources includes pumping the treated water through a hydrodynamic radiator in a cavitation mode into which a gas phase is fed and subsequent filtration of the water to be purified. With the use of a test unit, a preliminary experimental selection of the optimum parameters of the industrial plant is carried out: productivity, pump head, hydraulic dimensions of the equipment elements; composition of the oxidizing gas phase. Check the need for reagents: coagulants, flocculants and preservatives. Water is supplied after the hydrodynamic emitter (cavitator) to the completion column of the reactions. Ensure the continuity of the process of obtaining drinking water by constant supply of purified water to the ultrafiltration unit in the filtration regime when the ultrafiltration membrane is flowed by a turbulent flow with the Reynolds criterion 2,000≤Re≤4,000 or in the filtration mode with the purification of the ultrafiltration membrane from the sediment retained on it by a turbulent pulse flow of the flow of an ultrafiltration membrane with a Reynolds number of 6,000≤Re≤10,000. Switching of hydrodynamic modes and discharge of the contaminated residue into the sewage system is carried out at the command of ultrafiltration unit state controller electrically connected with the regulator of the hydrodynamic regime in the ultrafiltration unit. Check the quality and quantity of purified water that is drained into the storage tank, the quality controller of the water to be cleaned, electrically connected to the reagent block and automatic dosing pumps.

EFFECT: invention provides an operational, energy efficient and environmentally friendly preparation of high-quality drinking water for various required volumes of consumption using local natural water sources without or with minimal use of chemical reagents.

1 cl, 1 dwg, 4 tbl