RU121451U1 - FILTRATION NODE FILTER CARTRIDGE - Google Patents

Abstract

1. Filtration unit of the filter cartridge, consisting of a cylindrical shell, on the lower base of which a layer of nonwoven material is installed, made according to the size of the inner cross-section of the cylindrical shell, and a composition of granular sorbents and a layer of elastic polyurethane foam placed inside the shell; the layer of polyurethane foam is made according to the size of the inner cross section of the cylindrical shell and is the outer layer of the composition from the side of the upper base of the cylindrical shell; the content of polyurethane foam in the composition is 10 ÷ 60 vol.%. ! 2. The filtration unit of the filter cartridge according to claim 1, characterized in that the composition of granular sorbents and a layer of elastic polyurethane foam contains an additional layer of elastic polyurethane foam, which is also made according to the size of the inner cross-section of the cylindrical shell and is the outer layer of the composition from the side of the lower base of the cylindrical shell ... ! 3. The filtration unit of the filter cartridge according to claim 1, characterized in that the granular sorbents are a mixture of activated carbon and carboxyl-containing cation exchangers in the ratio (1 ÷ 0.1) ÷ (0.1 ÷ 1). ! 4. The filtration unit of the filter cartridge according to claim 1, characterized in that the layers of elastic polyurethane foam are made with the function of water dispersion over the cross-sectional area of the filter cartridge. ! 5. The filtration unit of the filter cartridge according to claim 1, characterized in that the layer of nonwoven material has a tight connection with the shell of the filtration unit of the filter cartridge. ! 6. The filtration unit of the filter cartridge according to claim 1, different

Description

The utility model is designed to produce benign drinking water and can be used as part of a replaceable filter cartridge for treating drinking water in household filters. The technical result is the provision of effective water purification from heavy metals, anions, active chlorine and organochlorine compounds, as well as the effective removal of protozoa cysts and iron compounds and the reduction of turbidity of the solution.

A known filter cartridge [RU 2236279], in which the composition of the adsorbent components is made in the form of a mixture of silver and non-silver-containing activated carbons with an iodine number of at least 1 g / cm ³ and silver-containing activated carbon contains silver in an amount of at least 0.2 wt.%. The composition of the adsorbent components further comprises a carboxyl cation exchange resin, which is located in the filter cartridge in the form of a mixture with a carbon adsorbent at a volume ratio of the mixture (1 ÷ 0.1) ÷ (0.1 ÷ 1).

One of the disadvantages of the known filter cartridge is the lack of a component capable of distributing the filtered liquid evenly throughout the material, which is why not all of its volume can be involved in the cleaning process, which reduces the cleaning efficiency.

The known filter cartridge does not allow to effectively retain iron compounds present in colloidal form, remove protozoan cysts and reduce the turbidity of the liquid being cleaned.

The closest in technical essence and the result achieved when using it is a filter cartridge [RU 74822] (prototype) containing a filtration unit filled with a mixture of adsorbing components and an additional filtration unit, which is made in the form of a mesh with layers of a non-woven filter cloth from ion-exchange fiber. The description of the prototype also indicates that the mixture of adsorbent components is made of silver-containing and non-silver-containing active carbons with an iodine number of at least 1 g / cm ³ and silver-containing activated carbon contains silver in an amount of at least 0.1 wt.%, While the mixture additionally contains carboxyl cation exchanger.

A disadvantage of the known adsorption material is the lack of a component capable of distributing the filtered liquid evenly throughout the material, because of which not all of its volume may be involved in the cleaning process, which reduces the cleaning efficiency.

The second drawback is that the utility model selected as a prototype effectively works only for water with a high content of iron ions, while not allowing to effectively retain colloidal forms of iron, protozoa cysts and reduce the turbidity of the filtered liquid.

The technical task is to develop a filtration unit for the filter cartridge for domestic water purification, creating a uniform distribution of the fluid flow throughout the entire volume of the filter material, which can effectively retain colloidal forms of iron, protozoan cysts and reduce the turbidity of the filtered fluid, as well as adapt a utility model for drinking water purification from various sources.

The technical result is achieved by the fact that a filtration unit for a filter cartridge is proposed, consisting of a cylindrical shell, on the lower base of which a layer of non-woven material is installed, made according to the size of the inner cross section of the cylindrical shell, and a composition of granular sorbents and a layer of elastic polyurethane foam placed inside the shell; the polyurethane foam layer is made according to the size of the inner cross section of the cylindrical shell and is the outer layer of the composition from the side of the upper base of the cylindrical shell; the content of polyurethane foam in the composition is 10 ÷ 60 vol.%.

It is advisable that granular sorbents are a mixture of activated carbon and carboxyl-containing cation exchangers in the ratio (1 ÷ 0.1) ÷ (0.1 ÷ 1).

It is also advisable that the content of elastic polyurethane foam is 10 ÷ 60 vol.%. A further increase in the content of polyurethane foam will lead to a significant decrease in the number of granular sorbents and, as a result, to a significant decrease in the efficiency of removal of active chlorine, phenol, benzene, lindane, chloroform and heavy metals.

It is important that the layer of elastic polyurethane foam is performed with the function of hydrodispersion over the cross-sectional area of the filter cartridge. Due to this, during the cleaning process, the liquid is in contact with the entire volume of the filter material, which increases the degree of its purification.

The technical result is also achieved by the fact that the nonwoven layer has a tight connection with the shell of the filtration unit of the filter cartridge.

It is advisable that the content of the layer of nonwoven material is 1 ÷ 10 vol.%.

Preferably, the nonwoven layer with a porosity of 1 ÷ 5 μm is made from compounds selected from the range of polyamide, polyester, polypropylene, polyethylene terephthalate, or mixtures thereof.

The carboxyl cation exchange resin contained in the mixture removes hardness ions: calcium and magnesium, which are contained in large quantities in water.

In FIG. presents a diagram of the filtration unit of the filter cartridge, where:

1 - a cylindrical shell; 2 - granular sorbents; 3 - a layer of flexible polyurethane foam; 4 - an additional layer of flexible polyurethane foam; 5 - a layer of nonwoven material.

The filtration unit of the filter cartridge works as follows:

Water enters the cylindrical shell (1) of the filtration unit and enters the outer layer of the composition - elastic polyurethane foam (3), where preliminary purification of iron compounds present in colloidal form, protozoal cysts and reduction of turbidity and water distribution over the entire width of the web occurs due to its capillary structure. This allows for a uniform cross-section of the flow of water into the next part of the composition, consisting of granular sorbents (2), thereby increasing the amount of sorbent in contact with the liquid being cleaned. Passing through granular sorbents (2), water is purified from active chlorine, organic and organochlorine compounds, pesticides, petroleum products, unpleasant odors and tastes. Carboxyl cation exchange resin introduced into the sorbents reduces water hardness and heavy metal content. Such a sorption mixture can be prepared homogeneous and does not require additional layering, which greatly simplifies the design of the cartridge. Next, the liquid to be cleaned passes through a layer of nonwoven material (5), where the final cleaning of colloidal forms of iron compounds, protozoa cysts and reduction of turbidity of the liquid takes place, is removed from the filtration unit.

To achieve the claimed result on the degree of purification from colloidal forms of iron compounds and cysts of protozoa, the composition of granular sorbents (2) and a layer of polyurethane foam (3) contains an additional layer of polyurethane foam (4).

The presence of a layer of nonwoven material (5) in the filter cartridge for water purification also ensures fixation of the composition of granular sorbents (2) and layers of flexible polyurethane foam (3, 4) in the cylindrical shell of the filter cartridge.

Below are examples of achieving a technical result when using the inventive sorption-filtering material with a productivity of 6 dm ³ / h. The examples illustrate but do not limit the application of the proposed material.

As examples, the data of the protocols of laboratory studies of water samples from the centralized water supply system of Moscow, artificially contaminated by the studied pollutants, before and after passing these samples through the claimed filter cartridge filtration unit are given.

Example 1

Node filtration filter cartridge containing (vol.%):

Activated carbon 55; carboxyl-containing cation exchangers 34; elastic polyurethane foam 10; non woven fabric one.

Indicator Water before passing through the filtration unit Water after passing through the filtration unit SanPiN norm 2.1.4.1074-01 Hardness, mEq / dm ³ 8.2 0.43 7.0 Iron, mg / dm ³ 1.2 0.29 0.3 Copper, mg / dm ³ 2.05 0.11 1.0 Mercury, mg / dm ³ 0.005 0.0001 0.0005 Cadmium, mg / dm ³ 0.005 0.0002 0.001 Lead, mg / dm ³ 0.06 0.002 0.03 Free chlorine, mg / dm ³ 1.1 0.06 0.3-0.5 Phenol, mg / dm ³ 0.01 <0.0001 0.001 Chloroform, mg / dm ³ 0.4 <0.005 0.2 Benzene, mg / DM ³ 0.05 <0.005 0.01 gamma-HCH (lindane), mg / dm ³ 0.01 <0.0001 0.002 Turbidity, EMF 10.2 0.07 2.6 Giardia cysts, ind./50 L 5 are absent are absent

The material according to Example 1 provides a relatively high degree of removal of active chlorine, organochlorine compounds, heavy metals, reduces water hardness, and also retains lamblia cysts and reduces turbidity.

Example 2

Node filtration filter cartridge containing (vol.%):

Activated carbon 43; carboxyl-containing cation exchangers 24; elastic polyurethane foam thirty; non woven fabric 3.

Indicator Water before passing through the filtration unit Water after passing through the filtration unit SanPiN norm 2.1.4.1074-01 Hardness, mEq / dm ³ 8.2 0.47 7.0 Iron, mg / dm ³ 1.2 0.19 0.3 Copper, mg / dm ³ 2.05 0.14 1.0 Mercury, mg / dm ³ 0.005 0.0002 0.0005 Cadmium, mg / dm ³ 0.005 0.0002 0.001 Lead, mg / dm ³ 0.06 0.004 0.03 Free chlorine, mg / dm ³ 1.1 0.08 0.3-0.5 Phenol, mg / dm ³ 0.01 <0.0001 0.001 Chloroform, mg / dm ³ 0.4 <0.005 0.2 Benzene, mg / DM ³ 0.05 <0.005 0.01 gamma-HCH (lindane), mg / dm ³ 0.01 <0.0001 0.002 Turbidity, EMF 10.2 <0.01 2.6 Giardia cysts, ind./50 L 5 are absent are absent

The material according to Example 2 provides a relatively high degree of removal of active chlorine, organochlorine compounds, heavy metals, iron, reduces water hardness, and also retains lamblia cysts and significantly reduces turbidity.

Example 3

Node filtration filter cartridge containing (vol.%):

Activated carbon twenty; carboxyl-containing cation exchangers 10;

elastic polyurethane foam,

including its extra layer 60; non woven fabric 10.

Indicator Water before passing through the filtration unit Water after passing through the filtration unit SanPiN norm 2.1.4.1074-01 Hardness, mEq / dm ³ 8.2 0.61 7.0 Iron, mg / dm ³ 1.2 0.11 0.3 Copper, mg / dm ³ 2.05 0.18 1.0 Mercury, mg / dm ³ 0.005 0.0004 0.0005 Cadmium, mg / dm ³ 0.005 0.0008 0.001 Lead, mg / dm ³ 0.06 0.009 0.03 Free chlorine, mg / dm ³ 1.1 0.10 0.3-0.5 Phenol, mg / dm ³ 0.01 <0.0001 0.001 Chloroform, mg / dm ³ 0.4 <0.005 0.2 Benzene, mg / DM ³ 0.05 <0.005 0.01 gamma-HCH (lindane), mg / dm ³ 0.01 <0.0001 0.002 Turbidity, EMF 10.2 <0.01 2.6 Giardia cysts, ind./50 L 5 are absent are absent

The material according to Example 3 provides a relatively high degree of removal of iron, lamblia cysts and significantly reduces turbidity, while providing a significant removal of active chlorine and heavy metals.

Declared as a useful model, the filtration unit of the filter cartridge allows to improve the hydrodynamic characteristics of cleaning by using granular sorbents in the adsorbing components of the mixture, to increase the amount of sorbent in contact with the liquid being cleaned, due to the use of flexible polyurethane foam, to effectively retain colloidal forms of iron, protozoan cysts and reduce turbidity filtered liquid, and the multilayer composition allows you to adapt a useful model for For the purification of drinking water from various sources.

Claims (7)

1. The filtration unit of the filter cartridge, consisting of a cylindrical shell, on the lower base of which a layer of non-woven material is installed, made according to the size of the inner cross section of the cylindrical shell, and a composition of granular sorbents and a layer of flexible polyurethane foam placed inside the shell; the polyurethane foam layer is made according to the size of the inner cross section of the cylindrical shell and is the outer layer of the composition from the side of the upper base of the cylindrical shell; the content of polyurethane foam in the composition is 10 ÷ 60 vol.%. 2. The filtration unit of the filter cartridge according to claim 1, characterized in that the composition of granular sorbents and a layer of elastic polyurethane foam contains an additional layer of elastic polyurethane foam, which is also made according to the size of the inner cross section of the cylindrical shell and is the outer layer of the composition from the side of the lower base of the cylindrical shell . 3. The filtration unit of the filter cartridge according to claim 1, characterized in that the granular sorbents are a mixture of activated carbon and carboxyl-containing cation exchangers in the ratio (1 ÷ 0.1) ÷ (0.1 ÷ 1). 4. The filtration unit of the filter cartridge according to claim 1, characterized in that the layers of elastic polyurethane foam are made with the function of hydrodispersion over the cross-sectional area of the filter cartridge. 5. The filtration unit of the filter cartridge according to claim 1, characterized in that the nonwoven layer has a sealed connection with the shell of the filtration unit of the filter cartridge. 6. The filtration unit of the filter cartridge according to claim 1, characterized in that the content of the layer of non-woven material is 1 ÷ 10 vol.%. 7. The filtration unit of the filter cartridge according to claim 1, characterized in that the nonwoven layer with a porosity of 1 ÷ 5 μm is made from compounds selected from the range polyamide, polyester, polypropylene, polyethylene terephthalate, or mixtures thereof.