WATER PURIFICATION AND DISINFECTION UNIT Russian patent published in 2018 - IPC C02F9/04 

FIELD: technology of water and air purification.

SUBSTANCE: invention relates to technology of cleaning and disinfecting water from naturally heavily polluted sources. Water purification and disinfection unit comprises a water pre-filter, an inlet of which is connected to a source of source water and an outlet of which is connected to a contact vessel, to which the ozone source is connected, and by the output of the ozone treated water the contact vessel is contacted with an ultrafiltration module with an ultrafiltration membrane installed therein, and by the outlet of the purified water, the ultrafiltration module is communicated with a reverse osmosis module, wherein the contact vessel is provided with an ozone treated water supply pump and an ejector whose nozzle is connected to the outlet of the ozone treated water supply pump, the ejector is connected to the contact vessel in the zone, below a predetermined water level in the contact vessel, wherein the contact vessel is connected to an ozone source through the ejector, which is communicated with the ozone source by the inlet to its mixing chamber, ultrafiltration module is connected by its inlet to outlet of the ozone treated water supply pump from the contact vessel through the ozone treated water supply pipeline, at the latter in series, in the course of the ozone treated water, a check valve and an ozone-treated water supply control valve are installed, cavity of the ultrafiltration module in front of the ultrafiltration membrane through the discharge valve is connected with the sewage system, and the cavity after the ultrafiltration membrane is connected via a second check valve and a regulator of the ratio of desalted and non-desalted water to the storage tank and through the charcoal filter and bypass valve to the inlet of the purified water supply pump, latter, by its output, is connected to a reverse osmosis module that is connected to the storage tank and a water outlet of 38 to 42 % (volume) from the water fed to the reverse osmosis and not through the reverse osmosis membrane with concentrated impurities in it, communicated via the discharge valve with a sewage system, through a third check valve – with the inlet to the reverse osmosis module and via a stop valve – with a vessel of reagents for washing the reverse osmosis membrane, which is connected via a washing pump to the inlet to the reverse osmosis module, and the ultrafiltration module, by the purified water outlet, is connected to the intermediate storage tank with a washing pump.

EFFECT: increased depth of water purification with the possibility of obtaining water at the outlet of the unit that meets the requirements for drinking water.

1 cl, 1 dwg