KR101813544B1 - Carbonized filter for water treatment and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a carbonized filter for water treatment and a method for manufacturing the same. According to the present invention, the carbonized filter for water treatment includes a copper-impregnated charcoal powder layer formed by coating (1) a carbonized non-woven fabric filter medium and (2) one surface or both surfaces of the carbonized non-woven fabric filter medium with a mixture obtained by mixing the copper-impregnated charcoal powder with a binder composition containing one or more types of organic copper compounds selected from a group consisting of components of Formulas 1 and 2 and binder resin and carbonizing the coated mixture. According to the present invention, the method includes the steps of: (a) immersing the charcoal powder in an impregnation solution containing a compound represented by Formula 3, one or more types of organic copper compounds selected from the group consisting of the components of Formulas 1 and 2, and an organic solvent; and (b) bringing the charcoal powder out of the impregnation solution of step (a) and drying the charcoal powder.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a carbonization filter for water treatment,

The present invention relates to a carbonization filter for water treatment and a method for producing the same.

As population and industrialization progress, water quality is gradually deteriorating, and the degree is expected to increase further. In Korea, contamination of water quality is gradually increasing due to residual chlorine used in river pollution and water purification process, microorganisms such as rust, fungus, algae, bacteria and various impurities due to aging of water pipe.

Particularly, it is necessary to remove micro-contaminant particles existing in the water in the fields of medicine, medicine, biotechnology, food-related fields such as beverage, liquor, soft drink, In recent years, as the level of living has been increasing, there has been much interest in developing a filter for water treatment. Currently, filters used in the filtration process for water treatment include MF (micro filter) which removes suspended solids existing in a solid state, and ultra-filter (UF) and nano-filter ) And reverse osmosis (RO) membrane filters capable of removing ionic minerals are also being developed.

Currently, domestic and foreign water treatment filters using fiber materials are widely used, and such fiber filters have been actively developed mainly with micro filters (MF). The conventional microfibre filter has an advantage that it is not easily clogged at a high flow rate, but has a disadvantage in that the filtration efficiency is low due to a small filtration area and is used for purifying or removing large particles. On the other hand, the membrane filter has a structure in which fine pores are connected to each other with a very thin thickness, so that the filtration efficiency for fine particles is good, but most of the particles are filtered on the surface, To remove particles from the surface.

Korean Patent Publication No. 10-2016-0123426

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the prior art,

A filter impregnated charcoal powder layer containing copper particles and a binder for fixing the charcoal powder is formed on one surface or both surfaces of the filter nonwoven fabric filter material, And a method for efficiently producing the carbon filter for water treatment.

It is another object of the present invention to provide an efficient carbon filter for water treatment, which provides an excellent antibacterial filter function and an excellent smell removal performance against ammonia by efficiently containing copper particles and char, and an efficient production method thereof.

The present invention, in order to achieve the above object,

(1) a carbonized nonwoven fabric filter for a filter, and

(2) A mixture of a copper-impregnated charcoal powder and a binder composition comprising at least one organic copper compound selected from the group consisting of the following formulas (1) and (2) and a binder resin on one surface or both surfaces of the carbonized non- A carbonization filter for water treatment comprising a copper impregnated charcoal powder layer formed by applying and carbonizing,

The copper impregnated charcoal powder

(a) immersing charcoal powder in an impregnation solution containing a compound represented by the following formula (3), at least one organic copper compound selected from the group consisting of the following formulas (1) and (2), and an organic solvent; And

(b) drying and drying charcoal powder from the impregnation solution of step (a). The carbonization filter for water treatment according to claim 1,

[ Formula 1 ]

(2)

(3)

In the above formula, n is a natural number of 1 to 10.

In addition,

(a) immersing charcoal powder in an impregnation solution containing a compound represented by the following formula (3), at least one organic copper compound selected from the group consisting of the following formulas (1) and (2), and an organic solvent;

(b) drying and drying the char powder from the impregnation solution of step (a);

(c) mixing the char powder of step (b) with a binder composition comprising at least one organic copper compound selected from the group consisting of the following formulas (1) and (2) and a binder resin;

(d) applying the charcoal powder mixture in step (c) to one or both surfaces of the filter nonwoven filter media;

(e) immersing the filter nonwoven fabric material coated with the charcoal powder mixture in step (d) in an air atmosphere; And

(f) carbonizing the filter that has not undergone the infiltration treatment in the step (e) by heat treatment in an inert atmosphere, and then carbonizing the carbonized filter.

[Chemical Formula 1]

(2)

(3)

The carbonization filter for water treatment according to the present invention is characterized in that a copper particle impregnated with pores and a surface of charcoal powder on one surface or both surfaces of a filter nonwoven fabric filter material is coated with a copper impregnated charcoal powder Layer is formed and then the filter is carbonized to provide excellent antibacterial filter function and excellent odor removal performance against ammonia and the like by copper particles and charcoal.

1 and 2 are views schematically showing a carbonization filter for water treatment according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figs. 1 and 2, the carbonizing filter for water treatment of the present invention comprises (1) a carbonized nonwoven filter medium for a filter, and (2) a carbon impregnated charcoal powder on one side or both sides of the carbonized non- A copper-impregnated charcoal powder layer formed by applying a mixture mixed with a binder composition comprising at least one organic copper compound selected from the group consisting of formulas (1) and (2) and a binder resin, and carbonizing the mixture.

The copper impregnated charcoal powder

(a) immersing charcoal powder in an impregnation solution containing a compound represented by the following formula (3), at least one organic copper compound selected from the group consisting of the following formulas (1) and (2), and an organic solvent; And

(b) drying and drying the char powder from the impregnation solution of step (a).

[ Formula 1 ]

(2)

(3)

In the above formula, n is a natural number of 1 to 10.

In the carbonization filter for water treatment of the present invention,

The impregnating solution of the step (a) may contain 5 to 20% by weight of the compound, 20 to 50% by weight of at least one organic copper compound selected from the group consisting of the compounds represented by the formulas (1) and (2) ;

 The mixture used for forming the copper impregnated charcoal powder layer contains 50 to 85% by weight of char coal powder, 10 to 20% by weight of at least one organic copper compound selected from the group consisting of formulas (1) and (2) Of binder resin.

The average size of the char powder in the step (a) is preferably 1 to 10 mm. When included in the above-mentioned range, a water treatment filter can be preferably used.

In the carbonizing filter for water treatment according to the present invention, the carbonized nonwoven fabric filter for filter may be selected from the group consisting of polyester, polyvinyl, polyvinyl alcohol, polyacrylonitrile, polyolefin, polypropylene, And at least one selected from the group consisting of

That is, the filter nonwoven fabric material prepared as described above may be carbonized.

In the carbonizing filter for water treatment of the present invention, at least one organic copper compound selected from the group consisting of the following formulas (1) and (2) is well dissolved in an organic solvent and well dispersed, .

 [ Formula 1 ]

(2)

In the preparation of the copper impregnated charcoal powder for use in the water treatment carbonization filter of the present invention, since the compound represented by the general formula (3) in the step (a) has a special structure, it functions to firmly bond the copper component and the charcoal powder do.

The present invention also relates to

(a) immersing charcoal powder in an impregnation solution containing a compound represented by the following formula (3), at least one organic copper compound selected from the group consisting of the following formulas (1) and (2), and an organic solvent;

(b) drying and drying the char powder from the impregnation solution of step (a);

(c) mixing the char powder of step (b) with a binder composition comprising at least one organic copper compound selected from the group consisting of the following formulas (1) and (2) and a binder resin;

(d) applying the charcoal powder mixture in step (c) to one or both surfaces of the filter nonwoven filter media;

(e) immersing the filter nonwoven fabric material coated with the charcoal powder mixture in step (d) in an air atmosphere; And

(f) carbonizing the filter, which has not been treated in step (e), by heat treatment in an inert atmosphere.

[ Formula 1 ]

(2)

 (3)

In the above formula, n is a natural number of 1 to 10.

The above-mentioned contents in the water treatment carbonization filter can be equally applied to the manufacturing method of the water treatment carbonization filter of the present invention. Therefore, duplicate content is omitted.

In the above-mentioned production method, the method of the infiltration treatment in the step (e) is not particularly limited, but it can be carried out by the following method:

 The filter nonwoven fabric filter material is transferred to a hot air circulation path and heat treated at a temperature rising rate of 1 to 5 ° C per minute in an air atmosphere to less than 350 ° C to be subjected to antibacterial heat treatment and infusibilization (stabilization). The nonwoven filter media for heat treatment immobilization filter thus manufactured can completely remove the residual solvent and change the thermoplastic polymer structure to a thermosetting polymer structure, thereby improving the heat resistance and handling property. The heat treatment temperature is appropriately selected from this viewpoint, and is generally set in the range of 200-400 占 폚, preferably 250-350 占 폚, and more preferably 300-350 占 폚.

In the above production method, the carbonization treatment method in the step (f) is not particularly limited, but may be carried out by the following method:

First, an antibacterial carbon nanofiber is prepared by carbonizing the infusibilized filter under a vacuum or an inert atmosphere (nitrogen or argon) at a temperature lower than 1000 캜. At this time, it is preferable to adjust the carbonization temperature in consideration of the melting point and the boiling point of the copper nanoparticles contained therein.

The carbonization treatment also reduces copper contained in the organic copper compound present therein to crystallize it into nanoparticles.

The temperature of the carbonization treatment is preferably less than about 1000 DEG C, but it is preferable that the temperature is not less than about 960 DEG C (the melting point of silver is about 960 DEG C) at which the effect of containing copper is not inhibited. The temperature of the carbonization treatment is not particularly limited within the range in which the above effect can be obtained, but is preferably in the range of 800-950 캜, more preferably 850-900 캜, more preferably 810-830 캜 .

The carbonized filter may further perform an activation treatment. That is, the carbonized filter is activated in a temperature range of less than 1000 ° C under a steam atmosphere to produce an antimicrobial activated filter having an ultrahard surface area of 500 to 2500 m 2 / g.

The organic solvent used in the production method of the present invention is not particularly limited but may be selected from the group consisting of dimethylformamide (DMF), dimethylacetamide (DMAc), alcohols, .

In the above production method,

The impregnating solution of step (a) may contain 5 to 20% by weight of a compound represented by the following formula (3), 20 to 50% by weight of at least one organic copper compound selected from the group consisting of the following formulas (1) and (2) , And a residual organic solvent;

 The mixture of step (b) comprises 50 to 85% by weight of char coal powder, 10 to 20% by weight of at least one organic copper compound selected from the group consisting of formulas (1) and (2), and a residual amount of binder resin can do.

The average size of the char powder in the step (a) may be 1 to 10 mm.

The nonwoven filter media for the filter in the step (d) may be selected from the group consisting of polyester, polyvinyl, polyvinyl alcohol, polyacrylonitrile, polyolefin, polypropylene, Or more may be used.

Hereinafter, the present invention will be described in more detail by way of examples. However, the following examples are intended to further illustrate the present invention, and the scope of the present invention is not limited by the following examples. The following examples can be appropriately modified and changed by those skilled in the art within the scope of the present invention.

Manufacturing example  1: Preparation of the compound represented by the formula (3)

In a three-necked reactor, Kopex-PEG-400 (concentrate) 112.6 g and dibutyltinlaurate 0.1 g were added to a heating device connected to a mechanical stirrer, a temperature sensor and a temperature sensor and stirred at room temperature. And 64.9 g of hexamethylene diisocyanate (HMDI) were placed and reacted. To the reaction solution, 322.1 g of pentaerythritol triacrylate (CAS Number 3524-68-3, manufactured by Sigma-Aldrich) and 0.2 g of methoxyhydroquinone were charged and the reaction was allowed to proceed at 75 for 3 hours. It was judged that the reaction was completed when the characteristic peak of isocyanate of 2260 cm -1 in the infrared spectrum completely disappeared. After completion of the reaction, 224 g of 3-trimethoxysilylpropyl glycidyl ether was added, and the reaction between the epoxy group of 3-trimethoxysilylpropyl glycidyl ether and the amine group contained in the urethane structure was carried out with stirring for 1 hour To proceed the desired compound.

 (3)

In the above formula, n is 6.

Manufacturing example  2: Copper Impregnation Of charcoal powder  Produce

10% by weight of the compound prepared in Preparation Example 1, 40% by weight of at least one organic copper compound selected from the group consisting of Formulas 1 and 2, and 50% by weight of dimethylformamide (DMF) .

The impregnation solution was impregnated with a charcoal powder having an average particle size of 2 to 3 mm for 2 hours, and then dried and dried to prepare a copper impregnated charcoal powder.

Manufacturing example  3: Copper Impregnation Charcoal powder  Preparation of containing application mixture

A copper impregnated charcoal powder prepared in Preparation Example 2, 5 wt% of at least one organic copper compound selected from the group consisting of Formulas 1 and 2, 10 wt% of a binder resin, and 5 wt% A coating mixture containing charcoal powder was prepared.

Example  One: Water treatment Carbonization  filter

The coating mixture containing the copper impregnated charcoal powder prepared in Preparation Example 3 was coated on one surface of a nonwoven fabric for polypropylene (PP) filter having a thickness of 20 mm to a thickness of 70 mm and dried to obtain a copper impregnated charcoal powder layer A water treatment filter was prepared.

The water treatment filter was oxidized to 300 DEG C while raising the temperature to 1 deg. C per minute by using a hot air circulation path in an air atmosphere to prepare an infusible (stabilized) fiber.

Next, the infusible water treatment filter was carbonized to 800 DEG C while raising the temperature to 1 DEG C per minute by using a hot-air circulation path in an inert atmosphere to prepare a carbonizing filter for water treatment.

Test Example  One: Water treatment Carbonization  Evaluation of antibacterial properties of filter

The antibacterial effect of the carbonization filter for water treatment prepared in Example 1 was evaluated.

The antimicrobial activity was measured by using the strains Staphyllococcus aureus and Klebsiella pneumoniae for 24 hours, and the eradication rate (%) was measured. The results are shown in Table 1 below.

Remarks Before the test After 24 hours Eradication rate  ( % ) Control fungus 1.5 × 10 ⁵ 6.5 × 10 ⁶ - Example 1 1.5 × 10 ⁵ <10 99.9

** Antimicrobial test result (strain: Staphyllococcus aureus ATCC 6538, Klebsiella penumoniae ATCC 4325).

Test Example  2: Water treatment Carbonization  Evaluate the performance of the filter

The filter performance was measured with the water treatment carbonization filter prepared in Example 1. [ The performance of the filter was measured using the TSI 3160 Fractional Efficiency Filter Tester under the following conditions.

Measured aerosol particles: DOP of 0.3 탆, flow rate: 32 ℓ / min, sample size: 100 cm 2

Porosity measurements were performed using a Mercury porosimetry (AutoPore IV9500) to evaluate the total porosity of the filter at a pressure of 20 to 61000 psi.

sample Filter thickness (탆) Collection efficiency (%) Air resistance (mmH2O) Porosity ( % ) The filter of Example 1 27mm 98 6 75

Claims (8)

(1) a carbonized nonwoven fabric filter for a filter, and
(2) A mixture of a copper-impregnated charcoal powder and a binder composition comprising at least one organic copper compound selected from the group consisting of the following formulas (1) and (2) and a binder resin on one surface or both surfaces of the carbonized non- A carbonization filter for water treatment comprising a copper impregnated charcoal powder layer formed by applying and carbonizing,
The copper impregnated charcoal powder
(a) immersing charcoal powder in an impregnation solution containing a compound represented by the following formula (3), at least one organic copper compound selected from the group consisting of the following formulas (1) and (2), and an organic solvent; And
(b) drying and drying the char powder from the impregnation solution of step (a). [Claim 7] The carbonizing filter for water treatment according to claim 1,
[ Chemical Formula 1 ]

(2)

(3)

In the above formula, n is a natural number of 1 to 10. The method according to claim 1,
The impregnating solution of step (a) may contain 5 to 20% by weight of the compound represented by formula (3), 20 to 50% by weight of at least one organic copper compound selected from the group consisting of the compounds represented by the formulas (1) and (2) A residual organic solvent;
The mixture used for forming the copper impregnated charcoal powder layer contains 50 to 85% by weight of char coal powder, 10 to 20% by weight of at least one organic copper compound selected from the group consisting of formulas (1) and (2) And a binder resin of a binder resin. The method according to claim 1,
Wherein the average size of the char coal powder in the step (a) is 1 to 10 mm. The method according to claim 1,
The carbonized nonwoven fabric filter for filter may be at least one selected from the group consisting of polyester, polyvinyl, polyvinyl alcohol, polyacrylonitrile, polyolefin, polypropylene, carbon and activated carbon fiber Wherein the carbonized filter is water-treated. (a) immersing a charcoal powder in an impregnation solution comprising a compound represented by the following formula (3), at least one organic copper compound selected from the group consisting of formulas (1) and (2), and an organic solvent;
(b) drying and drying the char powder from the impregnation solution of step (a);
(c) mixing the charcoal powder of step (b) with a binder composition comprising at least one organic copper compound selected from the group consisting of formulas (1) and (2) and a binder resin;
(d) applying the charcoal powder mixture in step (c) to one or both surfaces of the filter nonwoven filter media;
(e) immersing the filter nonwoven fabric material coated with the charcoal powder mixture in step (d) in an air atmosphere; And
(f) carbonizing the filter having undergone the incompatibility treatment in the step (e) by heat treatment in an inert atmosphere; and carbonizing the carbonized filter.
[ Chemical Formula 1 ]

(2)

(3)

In the above formula, n is a natural number of 1 to 10. 6. The method of claim 5,
The impregnating solution of step (a) may contain 5 to 20% by weight of a compound represented by formula (3), 20 to 50% by weight of at least one organic copper compound selected from the group consisting of the following formulas (1) and (2) And a residual organic solvent;
The mixture of step (b) comprises 50 to 85% by weight of char coal powder, 10 to 20% by weight of at least one organic copper compound selected from the group consisting of formulas (1) and (2), and a residual amount of binder resin Wherein the carbonization is carried out at a temperature of not higher than 100 ° C. 6. The method of claim 5,
Wherein the average size of the charcoal powder in the step (a) is 1 to 10 mm. 6. The method of claim 5,
The nonwoven filter media for the filter in the step (d) may be selected from the group consisting of polyester, polyvinyl, polyvinyl alcohol, polyacrylonitrile, polyolefin, polypropylene, By weight based on the total weight of the carbonized filter for water treatment.

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