METHOD OF PRODUCING DEEP-PURIFIED DRINKING WATER Russian patent published in 2016 - IPC C02F9/02 

FIELD: treatment plant.

SUBSTANCE: invention relates to deep purification of water for household purposes. Method of producing deeply purified drinking water comprises mixing source water from centralised supply with same water, purified by reverse osmosis system. Initial tap water passes overall provisional initial treatment at pre-filter, after which water flow is divided into a line for deep purification by household reverse osmosis system and a line of home ultrafiltration membrane treatment and subsequent mixing at point before post-filter, and mixing occurs only in presence of flow of water without use of containers for mixing and mixing ratio of water purified with an ultrafiltration membrane and water purified by reverse osmosis is 1:2. Mixing water purified with an ultrafiltration membrane and water purified by reverse osmosis system is defined by installing limiter of flow of water purified by ultrafiltration.

EFFECT: technical result is obtaining deeply purified drinking water with preservation of mineral elements in it, such as Ca and Mg cations, expressed through common water hardness within range of 1,5-2,0 mg-eq/l, as well as with pH higher than 6,5, which corresponds to standards of quality of packaged drinking water.

2 cl, 1 dwg