RU116144U1 - HOUSEHOLD INSTALLATION OF TREATMENT OF DRINKING WATER - Google Patents

Abstract

Household installation for post-treatment of drinking water, containing a mechanical pre-filtration unit with a cartridge for cleaning particles of more than 5 microns, a sorption pre-filtration unit containing a cartridge with compressed carbon with a porosity of more than 5 microns, a reverse osmosis filtration unit equipped with a bypass line, characterized in that the bypass line additionally a throttle valve and a sorption block for additional treatment of mixed water are installed, the cartridges of which are selected individually, based on the need for its effective additional treatment, contains a storage tank for low-mineralized water, installed after the block of reverse osmosis filtration, contains a block for sorption additional treatment of low-mineralized water after the storage tank, the cartridge of which is filled with activated carbon , contains a double tap for mixing low-mineralized and mixed water.

Description

The utility model relates to water treatment, in particular, to the purification of drinking water and can be used in household stationary filters having a reverse osmosis filtration stage.

Household filters for the purification of drinking water, operating on the principle of reverse osmosis, are widely known. A classic example of the layout of household reverse osmosis filters is the four-stage ATOLL A-460E filter manufactured by GE Osmonics (USA) [http://www.aquatrol.ru/ochistka-klapany_ypr-GE.htm, http: // www. geliosco.ru/complects.php?loc=67, http://www.lenntech.com], which has two stages of preliminary filtration and is recommended for use on source water that complies with the norms of CaNPiN. In the ATOLL A-460E filter, the 1st stage includes preliminary cleaning of mechanical impurities and insoluble impurities with a particle size of more than 5 microns, the 2nd stage includes cleaning using a granulated coconut coal cartridge and provides chemical cleaning of chlorine and chlorine compounds , pesticides, organics, etc., 3rd stage - reverse osmosis membrane treatment, which retains almost all dissolved components, as well as heavy metal salts, organic impurities and bacteria, 4th stage, established after e storage capacity - post-treatment of water from odors and gases.

The five-stage reverse osmosis filter ATOLL A-560E, manufactured by the same company, has an additional stage of preliminary filtration from mechanical impurities with a particle size of more than 1 micron and is used for increased contamination of the source water.

The filtering ability of a reverse osmosis system is truly unique. None of the filters working according to another principle - mechanical cleaning, adsorption or ion exchange - can provide this degree of purification. However, the deep desalination of water purified by reverse osmosis leads to the removal of physiologically necessary substances, such as calcium and magnesium, from its composition.

Enterprises engaged in the production of bottled drinking water most often solve this problem by dosing some physiologically useful trace elements into purified water using reverse osmosis. The implementation of this method of restoring the mineral composition of water after filtration using reverse osmosis in the domestic environment is impossible due to technical complexity and, accordingly, high cost.

In household reverse osmosis filters, additional steps are most often used to restore the mineral composition of purified water - the so-called mineralizing cartridges installed after the reverse osmosis stage of filtration.

The disadvantage of this method is the instability of the cartridge-mineralizer. With a constant flow of demineralized water through the cartridge-mineralizer, its effectiveness is not significant, and with long interruptions in water consumption, the primary volume of water from the cartridge-mineralizer has excessive mineralization.

Another important disadvantage of this method of restoring the mineral composition of purified water is the difficulty in ensuring microbiological safety of the loading of the cartridge-mineralizer itself. Especially with irregular water consumption in the domestic use of the filter.

A known installation of post-treatment of drinking water to produce bottled drinking water [RU No. 46498 U1, IPC ⁷ C02F 9/00, 02/09/2005], which can be selected as the closest analogue to the claimed technical solution, containing a sorption-catalytic filter, a carbon adsorption filter, and cartridge filters , ultraviolet irradiation unit, clean water tank, characterized in that it contains a reverse osmosis unit equipped with a bypass line, after which a schungite filter is installed, filled with a mechanical mixture of crushed schungite and active carbon Modified with silver at a ratio of one to one.

To increase the degree of mineralization of drinking water to physiological norms in this scheme, part of the water that has passed prefiltration on mechanical and sorption cartridges is supplied via a bypass line, bypassing the reverse osmosis unit, through shungite and mechanical filters, and an ultraviolet irradiation unit into a clean water tank.

The disadvantage of this installation is the limited use of it only to obtain bottled water and the inability to use it in a domestic environment.

The technical problem solved by the claimed utility model is the implementation of a domestic installation of post-treatment of drinking water with the ability to control the mineral composition of the purified water on the basis of standard household reverse osmosis filters.

The technical result is achieved in that a domestic drinking water purification unit containing a mechanical pre-filtering unit with a particle cleaning cartridge of more than 5 μm, a sorption pre-filtering unit containing a compressed coal cartridge with a porosity of more than 5 μm, a reverse osmosis filter unit equipped with a bypass line is different in that the bypass line is additionally equipped with a throttle valve and a sorption block for the purification of the so-called mixed water, the cartridge (or cartridges) of which are selected individually, based on the need for its effective purification, it contains a storage tank for low-saline water installed after the reverse osmosis filtration unit, it contains a sorption treatment unit for low-saline water after a storage tank, the cartridge of which is filled with activated carbon, the unit contains a double tap for mixing low-saline and mixed water.

The positive effect is achieved due to the filtering unit with a bypass line on the reverse osmosis unit, which allows to maintain the physiologically necessary concentration of salts, and the use of a throttle valve that regulates the optimal filtration rate on the sorption unit, the cartridge (or cartridges) of which are selected individually, based on the need for effective post-treatment of the mixed water flowing in a bypass line to a tap for clean water.

The figure 1 presents the installation diagram of the purification of drinking water. A post-treatment unit for drinking water consists of series-connected pre-mechanical filtration unit 1, for example, with a polypropylene particle cleaning cartridge of more than 5 microns, a preliminary sorption filtration unit 2, the cartridge of which contains compressed coal with a porosity of at least 5 microns, reverse osmosis unit 3, bypass line 4, the reverse osmosis unit 3 is connected to a storage tank for low saline water 5, which is connected to a sorption treatment unit for water after the storage tank 6, the cartridge of which is filled with activated carbon, the bypass line 4 is equipped with a throttle valve 7 at the inlet of the sorption aftertreatment unit 8 of the water supplied by the bypass line 4, the cartridge (or cartridges) of which are selected individually based on the need for its effective aftertreatment, a double tap for clean water 9.

Installation works as follows. Water from the pipeline is supplied to the preliminary mechanical filtration unit 1, the polypropylene cartridge of which carries out preliminary water purification from mechanical impurities and insoluble impurities with a particle size of more than 5 microns. Next, the water enters the preliminary sorption filtration unit 2, the compressed carbon cartridge of which with a porosity of at least 5 μm pre-purifies water using chlorine, chlorine-containing compounds, pesticides, organics, etc. Then the water that has passed the preliminary treatment enters the reverse osmosis unit 3. On the reverse osmosis unit 3, almost all salts, organic impurities and bacteria dissolved in the water are removed. The water passed through the reverse osmosis stage enters the storage tank 5, from which through the sorption aftertreatment unit 6, the cartridge of which is filled with activated carbon necessary for conditioning the water coming from the storage tank, enters the low-mineralized water line at the tap 9. Water that has passed the preliminary filtration stage 1 and 2 along the bypass line 4, through the throttle valve 7, necessary to set the optimal filtration rate, enters the block additional sorption purification 8, cartridge (or cartridges) which carry out deep purification of water, which is then supplied to a separate line of mixed water on the tap 9.

The possibility of using in the sorption aftertreatment unit 8 cartridges of various composition, selected individually for different regions of operation of the filter, is due to the need to ensure effective tertiary treatment of mixed water. When using the installation for purification of unfavorable microbiological source water, after the block of sorption post-treatment 8 it is possible to install a household block of ultraviolet radiation.

Using the proposed installation of post-treatment of drinking water allows the user in the home to get all the advantages of the unique filtering ability of the reverse osmosis system, while eliminating its significant disadvantage associated with the inability to obtain a filtrate with varying degrees of mineralization.

Even without the use of measuring equipment (salimeter), the user, using volumetric ratios of low-saline and mixed water, which has undergone sufficiently effective filtration but retains its natural mineral composition, can select a filtrate composition acceptable in the mineralization ratio.

The inventive domestic installation of post-treatment of drinking water is applicable in domestic conditions and allows the population to receive in one device not only pure low-saline water, but also clean water while maintaining physiological mineralization standards, which, in modern industrial settlements, is of great importance.

The inventive domestic installation of post-treatment of drinking water is simple to implement, does not require expensive components, is industrially applicable, even in small enterprises, which is of social importance.

Claims (1)

Household installation of post-treatment of drinking water, containing a mechanical pre-filtering unit with a particle cleaning cartridge of more than 5 μm, a sorption pre-filtering unit containing a compressed carbon cartridge with a porosity of more than 5 μm, a reverse osmosis filter unit equipped with a bypass line, characterized in that the bypass line additionally a throttle valve and a sorption block for the purification of mixed water were installed, the cartridges of which are selected individually, based on the need for its effective cleaning, contains a storage tank for low-saline water, installed after the reverse osmosis filtration unit, contains a sorption treatment unit for low-saline water after a storage tank, the cartridge of which is filled with activated carbon, contains a double tap for mixing low-saline and mixed water.