RU51522U1 - WATER TREATMENT DEVICE - Google Patents

Abstract

A utility model relates to water purification. A device for water purification is proposed, comprising a cylindrical body with a lid, means for supplying and discharging water, a distribution grid, a multilayer sorption charge, separation walls between the layers, the load being made of six layers, arranged in the following sequence along the water to be cleaned : porous filtering material for removing suspended particles, activated carbon microporous with catalytic properties, carboxylic cation exchanger in Ag / H form, macro a supportive low-basic anion exchange resin with a pore volume of at least 0.85 cm ³ / g, activated meso-microporous carbon with a total pore volume of at least 0.44 cm ³ / g, a porous filter material. The utility model provides bacterial stability and efficiency of water purification from unwanted and harmful impurities without significant changes in its mineral balance.

Description

This utility model relates to the field of water treatment, in particular the production of drinking water with high organoleptic characteristics and bacteriological stability, and can be used to obtain drinking water from a water supply system and freshwater sources.

Known devices that are devices for connecting to water taps in the household or in autonomous containers and contain various materials in certain combinations to remove impurities from water: cations, anions, organic substances, bacteria, microorganisms.

A device for producing drinking water is known, including a housing with openings for water inlet and outlet, a backfill consisting of a mixture of activated carbon, carboxylic cation exchanger in the Na form, strongly acid sulfocationionite in the H ⁺ form, strongly acid sulfocationionite in the Ag ⁺ form, strongly basic anion exchanger in the NSO ₃ form (RU 2010007, 03.20.1994).

However, the use of a mixture of components in the download has the following disadvantages - the protective effect of each component in relation to the others is reduced. So, for example, when loading in layers, activated carbon protects the polymer sorbents from the effects of active chlorine and prevents their destruction, and this does not happen when using a mixture of sorbents.

Such devices are known which contain successive layers of materials for filtering, deodorizing, sterilizing, reducing water hardness, removing iron, and the like.

So, in RU 2038316, 06.27.1995, a water treatment device is described, which comprises a housing with inlet and outlet nozzles, distribution plates and a multilayer sorbent charge containing neutral and / or ion-exchange amphoteric polymer material or fibrous activated carbon in the first and last layer and between them a layer of strongly basic anion exchange resin based on polypropylene fiber grafted with a styrene-divinylbenzene copolymer and a layer of fibrous activated carbon and strongly basic or strongly acid ion exchange resin or granular activated carbon.

The specified placement of layers for water treatment in this embodiment provides a well-defined sequence of removal of contaminants from water.

It is also known that the device is intended for the purification of drinking water with a high content of iron, in particular, oxide in the form of highly dispersed suspensions, which causes low water values for color, which contains a housing, supply and discharge pipes and arranged in series in the housing

a layer of fibrous polymeric material, a layer of a mixture of anion exchange resin and cation exchange resin, a layer of iodine-containing material, a layer of fibrous amphoteric material, a layer of strongly basic anion exchange resin and a layer of a mixture of activated fibrous carbon and anion exchange resin (RU 2078046, 04/27/1997).

In cases of multi-stage cleaning, an effect may occur due to the difference in the hydrodynamic resistance of each layer, due to which a slip of the fluid stream containing harmful impurities along the walls of the housing (the so-called wall effect) may occur, as a result of which the cleaning efficiency decreases sharply.

To reduce the negative effect of the near-wall effect, a cartridge for water treatment has been developed, which contains a cylindrical body, base, cover, nozzles for introducing purified water and discharging purified water, flow distributors, multilayer sorption loading with a zone separator, which are made in the form of a ring with at least one side of the filter-separating material is hermetically fixed, and a recess is made on the outer side surface of the ring to accommodate the elastic material, while in As a multilayer load, the filter contains 4 successive layers of sorbents: 2 cm of fibrous polypropylene, 6 cm of a mixture of resins AB-17-10 KU-2, 6 cm of a fibrous sorbent AK-22, 8 cm of a mixture of activated carbon and resin AB-17-10 (RU 2084265, 07.27.1997). A disadvantage of the known cartridge adopted as a prototype is the following: the use of highly basic cation exchanger and strongly acidic cation exchanger significantly changes the mineral composition of the treated water, depriving it of physiological usefulness, as well as the absence of bactericidal components in the composition of the charge, which allows bacterial contamination of water.

The objective of the proposed solution is to create a device with increased bacterial stability and the effectiveness of water purification from unwanted and harmful impurities without a significant change in its mineral balance.

The problem is solved by the described device for water purification, which contains a cylindrical body with a cover, means for supplying and discharging water, a distribution grid, a multilayer sorption loading, dividing walls between the layers, while the loading is made of six layers located in the following sequence along the purified water : porous filter material for removing suspended particles, activated carbon microporous with

catalytic properties, carboxyl cation exchanger in Ag / H form, macroporous low basic anion exchange resin with a pore volume of at least 0.85 cm ³ / g, activated carbon meso-microporous with a total pore volume of at least 0.44 cm ³ / g, porous filter material . Preferably, the device as a porous filter material contains polypropylene, which can be placed in the distribution grid. The low basic anion exchange resin preferably has a pore fraction of 2-30 nm in diameter at least 40%. The device contains activated carbon, meso-microporous, having a fraction of pores with a diameter of 0.5-2 mn at least 20%. Dividing walls are made of porous polypropylene.

The device diagram is shown in figure 1, where:

1 - Housing with cover

2 - Distribution grille with a layer of filter material

3 - Layer of activated carbon with catalytic properties

4 - Layer cation exchanger

5 - Layer of anion exchange resin

6 - Meso-microporous coal layer

7- Layer of porous filter material

8 - Separating partitions between layers

9 - point of supply of source water

10 - point of removal of purified water

The device operates as follows. The source water enters the upper part of the device, passes through a distribution grid 2, on which there is a distribution of the flow of filtered water and the separation of large mechanical impurities. Then the water passes sequentially through a layer of catalytic activated carbon, on which active chlorine is removed, a layer of cation exchanger, on which time stiffness is reduced, a layer of anion exchange resin, in which organic substances of natural origin are removed, and a layer of meso-microporous coal, in which removal organochlorine substances, adjusting the taste and smell of purified water. The layers of sorbents are separated by partitions of porous filter material to prevent their mixing. After purification, water passes through a layer of porous polymeric material to finally remove mechanical impurities and prevent the possible penetration of crushed particles of sorbents into purified water. Purified water is discharged from the bottom of the device.

The table provides data on water treatment.

Table
Water Treatment Data Level of quality unit of measurement Tap water Water after filter Color hail eighteen 6 Turbidity mg / l 0.8 0.1 Aluminum mg / l 0.5 0.15 Permanganate oxidation mgO ₂ / l 5.1 0.9 Stiffness commonly. mEq / L 3,5 1.3 Alkalinity mEq / L 2,3 0.2 Iron mg / l 0.27 0.05 Sulphates mg / l 53 fifty Chlorides mg / l 26 28 Nitrates mg / l 0.8 0.8 Chlorine residual free mg / l 0.35 out Chloroform mg / l 0.06 <0.006 Tetrachloromethane mg / l 0,03 <0.005 Dry residue mg / l 310 150 OMC CFU / cm ³ 5; 5 0; one BGKP Index <3 <3 P.acrugin Index 2 <2

As can be seen from the table, the proposed device can significantly reduce the values of color, turbidity, permanganate oxidation, as well as the content of aluminum, iron, chlorine and organochlorine compounds in purified water, reduce the hardness by removing the temporary without disturbing the mineral balance of the source water . The purified water is physiologically complete, but when it is boiled, scale formation is excluded. Bacteriological indicators of water are also improving.

Claims (6)

1. A device for water purification, comprising a cylindrical body with a cover, means for supplying and discharging water, a distribution grid, a multilayer sorption charge containing cation exchange resin, anion exchange resin, coal and separation walls between the layers, characterized in that the load is made of five layers located in the following sequence along the purified water: porous filter material for removing suspended particles, activated microporous carbon with catalytic properties, carboxyl cation exchange resin in Ag / H form, macro a supportive low-basic anion exchange resin with a pore volume of not less than 0.85 cm ³ / g, activated meso-microporous carbon with a total pore volume of not less than 0.44 cm ³ / g. 2. The device according to claim 1, characterized in that it contains polypropylene as a porous filter material. 3. The device according to claim 1, characterized in that the low basic anion exchange resin used has a pore fraction of 2-30 nm in diameter of at least 40%. 4. The device according to claim 1, characterized in that the used activated meso-microporous carbon has a pore fraction with a diameter of 0.5-2 nm of at least 20%. 5. The device according to claim 1, characterized in that the dividing walls are made of porous polypropylene. 6. The device according to claim 1, characterized in that the layer of porous filter material is placed in the distribution grid.