KR20110046230A - Biofilter, Harmful Substance Removal Device and Removal Method Using the Same - Google Patents

Biofilter, Harmful Substance Removal Device and Removal Method Using the Same Download PDF

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KR20110046230A
KR20110046230A KR1020100034877A KR20100034877A KR20110046230A KR 20110046230 A KR20110046230 A KR 20110046230A KR 1020100034877 A KR1020100034877 A KR 1020100034877A KR 20100034877 A KR20100034877 A KR 20100034877A KR 20110046230 A KR20110046230 A KR 20110046230A
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South Korea
Prior art keywords
biofilter
activated carbon
method
removing
filter
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KR1020100034877A
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Korean (ko)
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KR101032684B1 (en
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박중환
배관호
엄경용
염태현
이정민
정맹준
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(주)디알씨엔씨
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/01Deodorant compositions
    • A61L9/013Deodorant compositions containing animal or plant extracts, or vegetable material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0036Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10Particle separators, e.g. dust precipitators, using filter plates, sheets, or pads having plane surfaces, i.e. axial filtering
    • B01D46/12Particle separators, e.g. dust precipitators, using filter plates, sheets, or pads having plane surfaces, i.e. axial filtering in multiple arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84Biological processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0258Types of fibres, filaments or particles, self-supporting or supported materials comprising nanoparticles
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection
    • Y02A50/20Air quality improvement or preservation
    • Y02A50/23Emission reduction or control
    • Y02A50/2358Biological purification of waste gases

Abstract

The present invention relates to a biofilter, an apparatus for removing toxic substances and a method for removing toxic substances using the same, and more particularly, to an apparatus and method for removing toxic substances, volatile organic substances and the like by placing the biofilter in multiple stages. will be.
The apparatus for removing harmful substances according to the present invention includes: a first filter unit for removing the soluble harmful component by installing the washing water desalination unit and the washing water desalination unit to store the washing water so that the substance to be treated can pass, and removing the soluble substances by passing the substance to be treated; 1 The second filter unit spaced apart from the filter unit and passed through the material to be removed to remove insoluble harmful components, the second filter unit spaced apart from the second filter unit, passing through the processing material to remove moisture and residual harmful substances 3 It includes a filter unit.
In addition, the biofilter assembly according to the present invention includes a biofilter including a filter matrix through which a target material passes, an adsorbent attached to the filter matrix, and a nanometal-containing material.
In addition, the method for removing harmful substances according to the present invention comprises the steps of dissolving and absorbing the substance to be treated by washing water, removing the soluble harmful component by passing the substance to be treated through the first filter portion, and treating the substance to be treated with the second filter portion. Passing through to remove the insoluble harmful components, passing the treated material through the third filter portion to remove the water and residual harmful substances.
The present invention can reduce the load ratio of the biofilter by using a multi-stage biofilter, and by suppressing excessive growth of the biofilter microorganisms can effectively remove the harmful substances. In addition, the device for removing harmful substances and the method for removing the same according to the present invention can be miniaturized by removing and using a multi-stage biofilter installed in a single facility, thereby reducing the cost of installation and operation.

Description

Biofilter, device for removing harmful substances using same and removal method {BIOFILTER, APPARATUS AND METHOD FOR REMOVING HARMFUL MATERIAL USING THE SAME}

The present invention relates to a biofilter, an apparatus for removing toxic substances and a method for removing toxic substances using the same, and more particularly, to an apparatus and method for removing toxic substances, volatile organic substances and the like by placing the biofilter in multiple stages. will be.

Hazardous substances that adversely affect human health or the environment include most industries such as wastewater treatment facilities, manure treatment facilities, food waste treatment facilities, food processing plants, composting plants, petrochemical plants, tire plants, paint manufacturing plants, and painting plants. Occurs on site and in environmental treatment facilities.

Common toxic substances include odors such as ammonia (NH 3 ), methyl mercaptan (MM), hydrogen sulfide (H 2 S), methyl sulfide (DMS), methyl disulfide (DMDS), trimethylamine (TMA), acetaldehyde and styrene And volatile organic substances (VOCs) that destroy the ozone layer in the atmosphere, such as benzene, toluene, xylene, dichlorobenzene, and dichloromethane, or which are harmful to humans. These hazardous substances are strongly regulated at the national level, and the substances to be regulated are gradually expanding.

Conventionally, physicochemical methods such as wet scrubber, activated carbon adsorption tower, and incineration have been mainly used as a method for removing harmful substances. Problems such as filler replacement and secondary pollutant discharge occurred.

Recently, environmentally friendly and high efficiency treatment technology is required, and biological treatment technology using microorganisms began to be developed at home and abroad as an alternative technology since the 2000s. However, in the biological treatment technology, carrier-filled or scrubber-attached technology has problems such as huge volume of the reactor, frequent replacement of the carrier, excessive installation cost, and microorganism overgrowth.

The present invention is to prevent the excessive growth of the biofilter microorganisms using a biofilter containing a nano-metal in order to solve the above problems, high efficiency removal of harmful substances, low installation cost and low operating cost removal device and Provide a method.

The solution to the problem of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

The apparatus for removing harmful substances according to the present invention includes: a first filter unit for removing the soluble harmful component by installing the washing water desalination unit and the washing water desalination unit to store the washing water so that the substance to be treated can pass, and removing the soluble substances by passing the substance to be treated; 1 The second filter unit spaced apart from the filter unit and passed through the material to be removed to remove insoluble harmful components, the second filter unit spaced apart from the second filter unit, passing through the processing material to remove moisture and residual harmful substances 3 It includes a filter unit.

In addition, the biofilter assembly according to the present invention includes a biofilter including a filter matrix through which a target material passes, an adsorbent attached to the filter matrix, and a nanometal-containing material.

In addition, the method for removing harmful substances according to the present invention comprises the steps of dissolving and absorbing the substance to be treated by washing water, removing the soluble harmful component by passing the substance to be treated through the first filter portion, and treating the substance to be treated with the second filter portion. Passing through to remove the insoluble harmful components, passing the treated material through the third filter portion to remove the water and residual harmful substances.

According to the embodiments of the present invention, by using the multi-stage biofilter, the biofilter can reduce the loading rate, suppress the excessive growth of the biofilter microorganisms, and the microorganisms can efficiently remove the harmful substances.

Hazardous substances removal apparatus and removal method according to embodiments of the present invention can be miniaturized by using a multi-stage biofilter installed in one facility, it is possible to reduce the cost of installation and operation.

In addition, the apparatus and method for removing harmful substances according to the embodiments of the present invention may improve the adsorption power and increase the removal efficiency and sterilization ability of the harmful substances by attaching nanometals to the adsorbent of the biofilter.

1 is a schematic diagram of an apparatus for removing harmful substances according to the present invention.
2 is a flowchart of a method for removing harmful substances according to the present invention.
3 is a perspective view of a first biofilter according to an embodiment of the present invention.
4 is a perspective view of a biocarrier according to an embodiment of the present invention.
5 is a perspective view of a second biofilter according to an embodiment of the present invention.
6 is a perspective view of a third biofilter according to an embodiment of the present invention.
7 is a graph measuring the concentration of NH 3 in the harmful material inlet and outlet of the device for removing harmful substances according to the embodiment of the present invention according to elapsed time.
8 is a graph measuring the concentration of H 2 S in the harmful substance inlet and outlet of the apparatus for removing harmful substances according to the embodiment of the present invention according to elapsed time.
9 is a graph measuring the concentration of (CH 3 ) 3 N in the harmful material inlet and outlet of the apparatus for removing harmful substances according to an embodiment of the present invention according to elapsed time.

Hereinafter, with reference to the drawings will be described in detail with respect to the apparatus for removing harmful substances according to the present invention.

1 is a schematic diagram of an apparatus for removing harmful substances according to the present invention. Arrows a, b, c, d, e and f shown in FIG. 1 indicate the flow of the material to be processed. 3 to 6 are perspective views showing the biofilter and the biocarrier in each step.

As shown in FIG. 1, the apparatus for removing harmful substances according to the present invention includes a washing water desalination unit 3, a first filter unit 10: 10a and 10b, a second filter unit 20, and a third filter unit 30. It is configured to include).

As shown in FIG. 1, the first to third filter parts 10, 20, and 30 may be spaced apart at predetermined intervals in one housing 2. When each filter unit is integrally installed in one housing 2, the miniaturization of the toxic substance removing device is made, so that the space can be easily utilized.

The toxic substance removing apparatus may include a washing water storage tank 50, and stores the washing water circulating through the washing water desalination part 3, the first filter part 10, and the second filter part 20. The wash water storage tank 50 is connected to the housing 2 through which the wash water desalination unit 3 and the filter units are installed, and the transfer pipes 53a, 53b, and 53c. The wash water is supplied into the housing through the transfer pipes 53b and 53c, and again through the transfer pipe 53a through the second filter unit 20, the first filter unit 10, and the wash water desalination unit 3. Return to 50.

The amount of circulation of the washing water is preferably controlled by the level switch 51 attached to the washing water storage tank 50 and the washing water inflow control valve 52 connected thereto. The level switch 51 attached to the wash water storage tank 50 detects the amount of washing water remaining in the wash water storage tank 50 to determine the washing water circulation amount, and the level switch 51 controls the washing water inflow control valve 52 to adjust the amount of washing water. To the wash water reservoir (50).

When the rinsing water is circulated for a long time by operating the toxic substance removal device for a long time, the pH is changed to acid by the decomposition products of toxic substances, and the pH may be lowered to 3 or less. In this case, the pH is detected by a pH meter (not shown) attached to the inside of the wash water storage tank 50 to adjust the alkaline solution inflow control valve 61 connected to the alkaline solution storage tank 60 to adjust the wash water pH in the wash water storage tank 7 to 8. Can be adjusted with.

The to-be-processed material containing the hazardous substances is introduced through the inlet pipe 4 as shown in FIG. 1 (a path), and mixed with the external air flowing out of the external air inlet unit 5 to remove the hazardous substances. It flows into the housing 2. The blower 72 is disposed in the discharge pipe 71 through which the to-be-processed material is discharged, and the to-be-processed material introduced into the housing flows toward the discharge pipe 71 by the blower 72. And harmful substances are removed while passing through each filter unit.

The wash water desalination unit 3 is disposed on one side of the housing 2, and wash water 40 which absorbs the soluble harmful components contained in the to-be-processed material introduced into the hazardous substance removing apparatus housing 2 by desalination of the wash water. To be absorbed. As such, soluble harmful components present in the substance to be treated are first absorbed and removed by the washing water 40.

The material to be treated is transferred to the first filter part 10 spaced apart from the wash water desalination part 3 (b path) and passes through the first filter part 10.

The first filter unit 10 is a filter that removes soluble harmful components of the substance to be processed passing through the washing water desalination unit 3, as shown in Figure 1 hydrophilic first biofilter (10a) and It may be composed of a biocarrier (10b). The first biofilter 10a and the biocarrier 10b are preferably spaced at predetermined intervals for smooth flow of the substance to be treated and the wash water.

Soluble harmful components not removed by the washing water 40 are adsorbed to the first biofilter 10a or to the spaced biocarrier 10b. Soluble harmful components adsorbed on the first biofilter 10a or biocarrier 10b are decomposed by the microorganisms present in the first biofilter or biocarrier.

The first biofilter 10a is a filter that adsorbs soluble harmful components and decomposes them into microorganisms. The first biofilter 10a is a filter matrix having a low air resistance and a porous structure, and an adsorbent and nanometal-containing material having excellent adsorption properties attached to the matrix. It is configured, and may further comprise a hydrophilic adsorbent.

The filter matrix of the first biofilter 10a is a porous matrix layer including one or two or more of materials having a porous structure such as poly propylene, polyethylene, and polyvinyl chloride (PVC). It is preferable to make.

The adsorbent used in the first biofilter adsorbs the harmful substances and fixes them in the filter matrix so that the microorganisms can decompose the harmful substances. As the adsorbent, wood activated carbon including bamboo activated carbon, pine activated carbon, oak activated carbon, spruce activated carbon, coconut shell activated carbon, apricot seed activated carbon, peach seed activated carbon and the like can be used. Wood activated carbon preferably has a specific surface area of 800 m 2 / g or more and a particle size of 100 mesh or less.

The nano-metal-containing material used in the first biofilter is nano-material attached to the wood activated carbon, further improves the adsorption power of the wood activated carbon to increase the removal efficiency of harmful substances, and also improve the photocatalytic properties of the adsorbent.

The nanometal-containing material preferably contains any one or more of metals such as Fe, Cu, Mg, Ca, and metal oxides such as SiO 2 , Al 2 O 3 , MgO, CaO. The diameter of the nanometal is suitably 30 nm or less, more preferably 10 nm or less, and the content preferably contains 300 to 20000 ppm relative to the mass of activated carbon.

The hydrophilic adsorbent used in the first biofilter may be zeolite, kaolin, bentonite, or the like as a substance added to preferentially adsorb the soluble substance in the first biofilter.

The first biofilter 10a is prepared by preparing a coating slurry, coating the coating slurry on a porous matrix layer, and then heat treating the coating slurry, wherein the coating slurry is 10 to 20 wt% of wood activated carbon, 10 to 20 wt% of a hydrophilic adsorbent, and water dispersibility. 5-15 wt% of the polymer resin, and the remainder may be used by adding a nano metal-containing material of 300 to 20000 ppm relative to the mass of activated carbon to the material consisting of water. The water-dispersible polymer resin is preferably selected from one or more of water-dispersible polyurethane resins and water-dispersible acrylic resins.

As shown in FIG. 3, it is preferable to stack several porous matrix layers 11a as shown in FIG. 3. In the case of using multiple layers, the first biofilter can more efficiently remove soluble harmful components in the substance to be treated.

The biocarrier (10b) also absorbs soluble harmful components and decomposes them into microorganisms. Like the first biofilter (10a), the biocarrier (10b) is an adsorbent and nanometal-containing material having excellent adsorption properties attached to the filter matrix and the matrix. It is configured, and may further comprise a hydrophilic adsorbent.

The matrix of the biocarrier 10b preferably uses a stretchable material than the matrix of the first biofilter 10b because it provides space for more microorganisms to proliferate and the soluble harmful components are degraded. As a matrix of the biocarrier 10b, a material such as polyurethane may be used.

The adsorbent and hydrophilic adsorbent used for the biocarrier 10b are the same as in the first biofilter, and the manufacturing method and components of the coating slurry are also the same as in the first biofilter.

As described above, when the soluble substance is absorbed and adsorbed by the washing water 40, the first biofilter 10a, and the biocarrier 10b step by step, the biofilter and the biocarrier are overloaded even if the soluble harmful component increases rapidly. It can be prevented, it is possible to maintain a constant growth environment of the microorganisms and to prevent excessive growth of the microorganisms. Therefore, soluble organic substances can be effectively removed regardless of the concentration or throughput of soluble harmful components.

Moisture required in the first biofilter 10a is supplied from the washing water storage tank 50 through the washing water transfer pipe 53b and sprayed to the first biofilter 10a through the spraying nozzle 55. The sprayed washing water flows back into the washing water storage tank 50 through the washing water transfer pipe 53a. The wash water is maintained at a constant temperature by a constant temperature heater (not shown) attached to the wash water storage tank 50, and repeats the above cycle. At this time, the washing water is purified by repeated circulation and by maintaining a constant concentration of organic and inorganic compounds, it is possible to control the population of microorganisms, it is possible to prevent excessive growth of microorganisms even for long-term operation.

The material to be processed having passed through the first biofilter 10a and the biocarrier 10b is transferred to the second filter unit 20 (d path). Insoluble harmful components present in the hazardous substances are adsorbed while passing through the second filter unit 20. The second filter unit 20 is configured to include a hydrophobic second biofilter.

The washing water required in the second filter part 20 is supplied from the washing water storage tank 50 or through the washing water inflow pipe 53c as in the first filter part 10, and the second filter through the spraying nozzle 55. It may be injected into the portion 20.

The second biofilter constituting the second filter unit 20 is a filter that adsorbs insoluble harmful substances and decomposes them into microorganisms, and has a low air resistance, high porosity, and excellent adsorption and absorption properties coated on the filter matrix. It consists of adsorbent and nanometal-containing material.

The filter matrix of the second biofilter is composed of at least one porous matrix layer selected from polypropylene, polyethylene, polyvinyl chloride (PVC), and the like, and a polyurethane matrix layer.

In the filter matrix of the second biofilter, the porous matrix layer 21 and the polyurethane matrix layer 22 may be laminated in combination (see FIG. 5). In the case of lamination, it is possible to prevent deformation of the filter form, and due to the different structure between the laminated filter matrix layers, it is possible to remove harmful components more efficiently.

The adsorbent and the nanometal-containing material used for the second biofilter are as described in the first biofilter 10a.

The second biofilter is prepared by preparing a coating slurry, coating the coating slurry on a filter matrix, drying and coating the granular activated carbon on it. The coating slurry is 10 to 20 wt% of wood activated carbon powder (100 mesh or less), 5 to 10 wt% of water dispersible polymer resin, and 300 to 20000 ppm nanometal-containing material relative to the mass of activated carbon is added to the water. Preferably, the granular activated carbon is preferably 30 to 80 mesh or less. In addition, it is preferable to select and use 1 or more types of water-dispersible polymer resin from a water-dispersible polyurethane resin and a water-dispersible acrylic resin.

The material to be processed which has passed through the second filter part 20 is transferred to the third filter part 30 (e path). The to-be-processed material is removed from the third filter unit 30 with moisture and residual harmful substances, and the to-be-processed substance from which the moisture and residual harmful substances have been removed is discharged to the atmosphere through the discharge pipe 71 by the discharge blower 72. (F path).

The third filter part 30 is a filter that removes excess moisture contained in the material to be treated and finally removes trace amounts of harmful substances that have not been processed in the first and second filter parts. It is configured to include a third biofilter.

The third biofilter constituting the third filter unit 30 is composed of a filter matrix, an adsorbent attached to the filter matrix, and a nanometal-containing material, and may be configured by further filling the filter matrix with an adsorption filler.

As the filter matrix of the third biofilter, at least one porous matrix layer selected from polypropylene, polyethylene, polyvinyl chloride (PVC), etc., and the polyurethane matrix layer may be used as in the second biofilter. It is composed.

In the filter matrix of the third biofilter, the porous matrix layer 32 and the polyurethane matrix layer 31 may be laminated in combination (see FIG. 6). In the case of lamination, it is possible to prevent deformation of the filter form and to remove harmful substances more efficiently due to the different structure between the laminated matrix layers.

The adsorbent used in the third biofilter removes moisture and trace residual harmful substances from the to-be-processed material from which most harmful components are removed while passing through the second biofilter, and is treated with microorganisms for antibacterial and sterilization. As the adsorbent, wood activated carbon as in the first biofilter 10a may be used. It is preferable that the wood activated carbon in a 3rd biofilter has a specific surface area of 1200 m <2> / g or more.

The nanometal-containing material used in the third biofilter can be used by imparting nanomaterials to such activated carbon, and the nanometal-containing material impregnated on the wood activated carbon further enhances the adsorption power of the activated carbon to remove harmful components and sterilize it. And increase the antibacterial ability.

The nanometal-containing material preferably contains silver (Ag), iron (Fe), zinc (Zn) and the like which have excellent sterilization and antibacterial properties. The diameter of the nanometal is suitably 30 nm or less, more preferably 10 nm or less.

Adsorption filler of the third biofilter is a material for more effective sterilization and antibacterial, and consists of an adsorbent and a nanometal-containing material. The adsorbent is composed of the same wood activated carbon as in the first biofilter, and the nanometal-containing material is composed of silver (Ag), iron (Fe), zinc (Zn) and the like.

The third biofilter is prepared by preparing a coating slurry, coating the coating slurry on the filter matrix and drying, and then filling the filter matrix with an adsorption filler.

The coating slurry of the third biofilter may be composed of 20 to 30 wt% of impregnated activated carbon powder (100 mesh or less), 5 to 10 wt% of a water dispersible polymer resin, 0.05 to 1.0 wt% of a nanometal-containing material, and the remainder of water. Can be. The water dispersible polymer resin is preferably selected from one or more of water dispersible polyurethane resins and water dispersible acrylic resins.

 Adsorption filler is prepared by adding 0.05 to 1.0 wt% of a nanometal-containing material to activated carbon (8 to 20 mesh), and the prepared adsorption filler is filled into the porous matrix layer.

When the microorganism is excessively multiplied, it is difficult to efficiently remove the harmful substances because the pores present in the biofilter or the biocarrier are blocked by the microorganisms and thus the harmful substances do not pass smoothly. By the way, in the case of removing the harmful substances by using the biofilter of several stages as in the present invention, the microbial growth environment is kept constant by preventing the biofilter of each stage from being overloaded.

Therefore, excessive proliferation of microorganisms is suppressed and harmful substances can be effectively removed by a multi-stage biofilter. In addition, the soluble and insoluble substances in the hazardous substances are removed step by step, thereby enabling efficient removal.

Hereinafter, with reference to the accompanying drawings, a method for removing harmful substances using a hazardous substance removing apparatus according to the present invention.

2 is a flowchart of a method for removing harmful substances according to the present invention.

As shown in Figure 2, the method for removing harmful substances according to the present invention comprises the steps of dissolving and absorbing the substance to be treated by washing water (S1), removing the soluble harmful component by the first filter unit (S2), second It comprises a step of removing the insoluble harmful components (S3) by the filter unit, and the step of removing water (S4) by the third filter unit.

Step S1 shown in Figure 1 is a step of passing the harmful substances introduced into the inside of the hazardous substance removing apparatus to the washing water, and absorbs and removes soluble harmful components contained in the substance to be treated with the washing water.

S2 step shown in Figure 1 is a step of passing the harmful substances passed through the wash water to the first filter unit to adsorb the soluble harmful components in the substance to be treated and decomposes into microorganisms, in the treated substance not removed in step S1 The soluble component is adsorbed onto the first biofilter and the biocarrier and decomposed and removed using the microorganisms present in the biofilter and the biocarrier. The first biofilter and the biocarrier are the same as described above in the apparatus for producing hazardous substances.

In the step S3 illustrated in FIG. 1, the harmful substances passing through the first filter unit are passed through the second filter unit to adsorb insoluble harmful components in the substance to be treated and decompose into microorganisms. The second biofilter is the same as described above in the apparatus for producing hazardous substances.

In the step S4 shown in FIG. 1, the harmful substances passing through the second filter unit are passed through the third filter unit to remove moisture and residual harmful substances, and are antibacterial and sterilized. The third filter unit is the same as described above in the apparatus for producing hazardous substances.

Hereinafter, the remarkable effects of the present invention will be described in more detail with reference to the following examples. However, this embodiment is only an embodiment of the present invention, and the scope of the present invention is not limited thereto.

(1) Preparation of First Biofilter and Biocarrier

30.5 L of 45 wt% water-dispersible polyurethane resin solution and 66.1 L of distilled water were added to a 100 L mixing tank equipped with a stirrer and stirred for about 30 minutes, followed by 5 nm Al 2 O 3 4 L of nano solution (2 wt%) and 2 L of 20 nm iron (Fe) nano solution (2 wt%) were sequentially added and stirred. Then, 5 kg of synthetic zeolite, 5 kg of bentorite, and 10 kg of charcoal activated carbon powder were sequentially added and slurried. After the addition, the mixture was stirred at room temperature for 6 hours to prepare a coating slurry of the first biofilter and the biocarrier.

The coating slurry was coated with a polypropylene matrix and a polyurethane matrix, respectively, and then the excess slurry was removed, dried for 12 hours with air at 80 ° C., heat-treated at 120 ° C. for 30 minutes, and cooled.

As shown in FIG. 3, three sheets of the polypropylene matrix (11a, 620mm (L) × 1090mm (W) × 20mm (H) prepared above were laminated and bonded with a polypropylene thermal adhesive to prepare a first biofilter. In addition, as shown in Figure 4, the polyurethane matrix (10b, 25 ppi) was cut into a size of 30mm (L) x 30mm (W) x 30mm (H) (cuboid) to prepare a biocarrier.

(2) Preparation of Second Biofilter

30.5 L of 45 wt% water-dispersible polyurethane resin solution and 66.1 L of distilled water were added to a 100 L mixed tank equipped with a stirrer and stirred for about 30 minutes, followed by 4 L of 5 nm Al 2 O 3 nanosolution (2 wt%) and 20 nm 2 L of iron (Fe) nanosolution (2 wt%) was sequentially added and stirred. And 20 kg of charcoal activated carbon powder was added and slurried. After the addition, the mixture was stirred at room temperature for 6 hours to prepare a coating slurry of the second biofilter matrix.

The coating slurry was coated with a polypropylene matrix layer, and then the excess slurry was removed, dried for 12 hours with air at 80 ° C., heat-treated at 120 ° C. for 30 minutes, and then cooled.

After that, the polyurethane matrix layer treated as described above is passed through a compression roller to remove excess slurry, and the granular activated carbon (30 to 80 mesh) is coated on the surface of the polyurethane matrix layer under vibration, followed by air at 80 ° C. It was dried for 12 hours, heat treated at 120 ° C. for 30 minutes, and cooled.

The polypropylene matrix layer and the polyurethane matrix layer prepared above were cut to a size of 620 mm (L) x 1090 mm (W) x 20 mm (H), and the polyurethane matrix layer 22 was formed inside as shown in FIG. Two sheets were placed and laminated so that the polypropylene matrix layer 21 was placed on the outer side thereof, and then a second biofilter was manufactured by bonding with a PP heat adhesive.

(3) Preparation of the third biofilter

30.5 L of 45 wt% water-dispersible polyurethane resin solution and 66.1 L of distilled water were added to a 100 L mixing tank equipped with a stirrer, followed by stirring for about 30 minutes. 4 L and 3 nm of 5 nm Al 2 O 3 nanosolution (2 wt%) 10 L of silver (Ag) nanosolution (2 wt%) was sequentially added and stirred. 20 kg of activated carbon powder was added and slurried. After the addition, the mixture was stirred at room temperature for 6 hours to prepare a coating slurry of the third biofilter matrix.

After coating and coating the polypropylene matrix layer on the coating slurry, the excess slurry was removed, dried for 12 hours with air at 80 ℃, heat-treated for 30 minutes at 120 ℃ and then cooled.

The polyurethane matrix layer (25 ppi) was supported on the coating slurry and passed through a compression roller to remove excess slurry, dried for 12 hours with air at 80 ° C., heat-treated at 120 ° C. for 30 minutes, and then cooled.

In addition, 10 L of 3 nm silver (Ag) nano solution (2 wt%) and 100 kg of granular activated carbon of 8 to 20 mesh were mixed and dried for 12 hours with air at 80 ° C. to prepare an adsorbent for polypropylene matrix filling.

The coated polypropylene matrix and polyurethane matrix (25 ppi) were cut to a size of 620 mm (L) x 1090 mm (W) x 20 mm (H), and then the three polyurethanes were heat-bonded as shown in FIG. The matrix layer 31 and the two polypropylene matrix layers 32 were alternately stacked, and the third biofilter was manufactured by filling the polypropylene matrix layer 31 with the adsorbent for matrix filling prepared above.

(4) Manufacture of device for removing harmful substances using biofilter

The first biofilter, the biocarrier, the second biofilter, and the third biofilter manufactured above are shown in FIG. 1 in a rectangular housing (36 m 3) having an inner diameter of 3 m (L) x 3 m (W) x 4 m (H). It was installed sequentially as shown.

In addition, harmful substances are introduced from two 350mm diameter pipes at a speed of 120㎥ / min, and outlets are discharged through a 500mm diameter pipe and connected to a blower. In addition, the sprinkling system was equipped with a sprinkling storage tank (1m (L) × 1m (W) × 1m (H)), alkaline solution storage tank (100L), and a spraying nozzle, pH controller and the like as shown in FIG.

The microbial adhesion was formed in the biofilter using the biologically treated water in the field, the operating conditions are 10 ~ 40 ℃, relative humidity 90% or more, air volume 120 ㎥ / min, differential pressure 25 mmH 2 O or less It was operated on condition.

By installing the hazardous material removal device using the multi-stage biofilter and removing the harmful material for a certain period of time, the concentration of NH 3 , H 2 S and (CH 3 ) 3 N at the inlet and outlet of the hazardous substance according to the elapsed time was measured. The results are shown in FIGS.

7 to 9, the x-axis represents elapsed time (days) and the y-axis represents concentration (ppm). Although the concentrations of hazardous substances (NH 3 , H 2 S, (CH 3 ) 3 N) in the inlet differ depending on the measurement date, most of the hazardous substances have been removed regardless of the concentration. In other words, even if overloaded due to high concentration of harmful substances, the harmful substances are efficiently removed by the multi-stage filter.

In addition, when there is no difference in the removal rate of harmful substances at the time of installation of the noxious substance removal device and 300 days or more, it can be seen that even when used for a long time, the excessive growth of microorganisms is suppressed and the microorganism growth environment is kept constant. . Therefore, the cost of replacing the filter can be reduced.

The embodiments and drawings attached to this specification are merely to clearly show some of the technical ideas included in the present invention, and those skilled in the art can easily infer within the scope of the technical ideas included in the specification and drawings of the present invention. Modifications that can be made and specific embodiments will be apparent that both are included in the scope of the invention.

3: washing water desalination part 4: inflow pipe
5: external air inlet 10: first filter
10a: first biofilter 10b: biocarrier
20: second filter portion 30: third filter portion
40: washing water 50: washing water storage tank
51 level switch 52 washing water inlet control valve
60: alkaline solution reservoir 61: alkaline solution inlet control valve
71: exhaust pipe 72: blower

Claims (14)

  1. A biofilter assembly comprising a filter matrix through which a target material passes, a biofilter comprising an adsorbent attached to the filter matrix, and a nanometal-containing material, and removing harmful substances.
  2. The method of claim 1,
    Wherein said biofilter assembly comprises at least two biofilters.
  3. The method of claim 2,
    The biofilter assembly comprises a first biofilter, a biocarrier, a second biofilter, and a third biofilter.
  4. The method of claim 3,
    Adsorbents of the first to third biofilters and biocarriers
    A biofilter assembly comprising one or two or more selected from bamboo activated carbon, pine activated carbon, oak activated carbon, spruce activated carbon, coconut shell activated carbon, apricot seed activated carbon and peach seed activated carbon.
  5. The method of claim 3,
    Nanometal-containing materials of the first biofilter, the biocarrier and the second biofilter
    A biofilter assembly comprising one or two or more selected from nano-sized Fe, Cu, Mg, Ca, SiO 2 , Al 2 O 3 , MgO or CaO.
  6. The method of claim 3,
    The first biofilter and the biocarrier further comprises a hydrophilic adsorbent.
  7. The method of claim 6,
    The hydrophilic adsorbent comprises one or a mixture of two or more selected from zeolite, kaolin and bentonite.
  8. The method of claim 3,
    The filter matrix of the first biofilter is
    It consists of a porous matrix layer comprising one or two or more selected from polypropylene, polyethylene or PVC,
    The filter matrix of the biocarrier is a biofilter assembly, characterized in that the polyurethane.
  9. The method of claim 8,
    The filter matrix of the first biofilter is
    Biofilter assembly, characterized in that one or two or more porous matrix layers are laminated.
  10. The method of claim 3,
    The filter matrix of the second biofilter is
    A biofilter assembly comprising a porous matrix layer comprising at least one selected from polypropylene, polyethylene, and PVC, and a polyurethane matrix layer laminated.
  11. The method of claim 3,
    The filter matrix of the third biofilter is
    Porous matrix layer comprising one or two or more selected from polypropylene, polyethylene, PVC and polyurethane matrix layer is laminated
    And said porous matrix layer is filled with an adsorption filler.
  12. The method of claim 11,
    The adsorption filler is a biofilter assembly, characterized in that it comprises wood activated carbon and nano-metal-containing material attached to the wood activated carbon.
  13. The method of claim 12,
    The wood activated carbon includes one or two or more selected from bamboo activated carbon, pine activated carbon, oak activated carbon, spruce activated carbon, coconut shell activated carbon, apricot seed activated carbon, and peach seed activated carbon.
    The nanometal-containing material is a biofilter assembly, characterized in that it comprises one or two or more selected from nano-size Ag, Fe or Zn.
  14. The method of claim 13,
    The nanometal-containing material of the third biofilter
    Biofilter assembly, characterized in that it comprises one or two or more selected from nano-size Ag, Fe or Zn.
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KR101929396B1 (en) * 2018-03-30 2018-12-14 (주)한국테크 Apparatus for removing harmful material in material to be treated
KR102047381B1 (en) * 2019-08-14 2019-11-21 주식회사 지원 Deodorizing system for cattle shed

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JPH0646999B2 (en) * 1988-09-05 1994-06-22 神鋼パンテック株式会社 Biological treatment apparatus malodorous gases
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KR100635124B1 (en) * 2004-08-31 2006-10-17 비앤이테크(주) Removal apparatus of complex odor by solubility
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KR101507772B1 (en) * 2014-02-20 2015-04-07 경기대학교 산학협력단 Cooling tower having humidity filter
CN108187430A (en) * 2018-01-25 2018-06-22 张荷友 A kind of rotary mine dedusting equipment of wind-guiding discharge dust

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