KR20150056267A - Deodorizing apparatus using bio filter - Google Patents

Abstract

The present invention relates to a deodorizing apparatus using a biofilter, which prevents pores from being blocked and compressed and increases a deodorizing efficiency by comprising a preprocessing unit, a biofilter unit, and a post-processing unit. The preprocessing unit introduces and preprocesses air. The biofilter unit removes an offensive odor as the air passing through the preprocessing unit passes the biofilter and biologically decomposed, and comprises a carrier layer by a microorganism immobilization carrier having a supporter made of synthetic resin or ceramic and a carrier unit which is applied or coupled to the supporter and has alginate, polyvinyl alcohol (PVA), activated carbon, and microorganisms. The post-processing unit removes an offensive odor remaining in the air passing through the biofilter unit and comprises a plurality of absorption layers including a dehumidifying agent or activated carbon. According to the present invention, the deodorizing apparatus is capable of preventing pores from being blocked and compressed and increasing a deodorizing efficiency and maintains a stable odor destruction efficiency by eliminating an anaerobic space, where air does not circulate, inside the carrier layer by preventing the generation of a dead space due to channeling prevention as a coating film is formed on the supporter which forms the carrier. Moreover, the present invention effectively removes polymer offensive odor substances, which cannot be eliminated in a biofilter, from activated carbon and facilitates the replacement of activated carbon.

Description

[0001] The present invention relates to a deodorizing apparatus using bio filter,

TECHNICAL FIELD The present invention relates to a malodor treatment apparatus using a biofilter, and more particularly, to a malodor treatment apparatus using a biofilter for preventing a void clogging phenomenon and a pressing phenomenon of a carrier and enhancing a malodor removal efficiency.

The odor components generated in the sewage treatment plant, the food treatment plant, the livestock wastewater treatment plant, the sludge incineration and drying facility, the waste landfill, and various chemical plants vary widely in composition of the pollutants depending on the generation source and source. Major odor inducing substances include hydrogen sulfide, Sulfur compounds such as mercaptans, nitrogen compounds such as ammonia and amines, volatile organic compounds (VOCs) such as benzene, toluene, ethylbenzene and xylene, and volatile sulfur compounds.

The above-mentioned odorous components are generally converted into water and carbon dioxide, and are generally removed. The currently used odor gas treating techniques include a physicochemical deodorization method such as an activated carbon adsorption method, a chemical solution cleaning method, an ozone oxidation method, a combustion deodorization method, , An activated sludge method, and a bio-filter.

Such methods may be used alone or in combination of two or more depending on the processing environment. Korean Patent Registration No. 10-0938497 is also disclosed as a deodorizer having a physical treatment section, a biological treatment section, and a chemical treatment section as one module. The physico-chemical deodorization method has a problem of operating costs such as chemicals and material costs, and the biological deodorization method requires a lot of area and has a drawback in that a high power loss is required due to a high pressure loss.

Recently, there has been a growing interest in the method of deodorizing charged microorganisms using a microorganism carrier which can be operated at a small cost in a small space among the biological deodorization methods at a low cost.

A method of deodorizing a carrier-loaded microorganism is also called a biofilter. This method is a method of filling a carrier immobilizing microorganisms into a packed column and removing odorous gas by introducing the carrier, wherein the introduced odorous gas is decomposed by microorganisms, It is a principle that decomposes and removes odor component by keeping the energy and decomposition materials using microorganisms.

The biological method using microorganisms as described above has been mainly used in general ozone and wastewater treatment, but recently it has been applied to the field of odor removal and its utilization has been increasing.

Treatment technologies in this atmospheric field are focused on stabilizing and growing microorganisms by immobilizing microorganisms at high concentrations. These microorganisms require the supply of water and nutrients for growth and proliferation, In the case of the deodorization apparatus, it is very important to prevent the microorganisms growing on the carrier from being exposed to chemical shock due to a sudden change in the component of the incoming odor gas.

Korean Patent No. 10-1009339 and Korean Patent No. 10-1183090 disclose a deodorization apparatus using a biofilter having a conventional porous ceramic carrier, and a biofilter having a porous polymer carrier for holding a large amount of biomass A deodorizing device using a deodorizing device has been developed. However, since the porous polymer carrier is light and has wide internal pores, it can retain a large amount of biomass. However, when the deodorizer is operated for a long time, the pressure difference is increased due to the occlusion phenomenon due to excessive microbial growth, There was a problem.

In the case of a wet type deodorizer, moisture (moisture) is excessively contained in the air discharged through the discharge port. The discharged moisture includes various salts due to acidic or basic moisture, There was a problem such as a plant death.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a malodor treating apparatus which prevents void clogging and pressing of a carrier and improves odor removal efficiency.

It is another object of the present invention to provide a malodor processing apparatus which prevents the occurrence of a dead zone through channeling prevention in a carrier layer and eliminates the anaerobic region in which air inside the carrier layer does not pass, thereby maintaining a stable malodor decomposition efficiency.

It is still another object of the present invention to provide a malodor processing apparatus that effectively removes polymeric odors from the activated carbon and facilitates replacement of the activated carbon.

In order to accomplish the above object, the present invention provides a malodor processing apparatus using a biofilter, comprising: a pretreatment unit for introducing air containing malodorous impurities into a pretreatment unit; And a post-treatment unit for removing odors remaining in the air passing through the biofilter unit; The biofilter portion is formed as a carrier layer by a microorganism immobilization support having a support made of synthetic resin or ceramic and a carrier portion coated or bonded to a support and containing a carrier portion including alginate, polyvinyl alcohol (PVA), activated carbon and microorganisms And the post-treatment section is composed of a plurality of adsorption layers including a dehumidifying agent or activated carbon.

The cross-sectional area of the flow path that flows out of the post-treatment section is made larger than the cross-sectional area of the flow path that flows into the pretreatment section, thereby reducing the flow velocity.

The plurality of adsorption layers are composed of a primary adsorption layer containing a dehumidifying agent that primarily removes moisture and a secondary adsorption layer containing activated carbon to remove polymeric odor substances.

The pretreatment section includes a spray nozzle for spraying the washing water and a pall ring layer formed of a filling material having a large porosity and specific surface area to widen the contact area between the washing water and the air sprayed through the spray nozzle.

A demister for separating droplets is provided at the rear end of the preprocessor or at the front end of the postprocessor.

According to the malodor treatment apparatus using the biofilter according to the present invention, it is possible to prevent voiding and puckering of the carrier, increase the odor removal efficiency, form a carrier on the support, The anaerobic region in which air does not pass through the interior of the carrier layer is dissolved to maintain a stable odor decomposition efficiency and the polymer odor which has not been removed from the biofilter is effectively removed from the activated carbon and the activated carbon is easily replaced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing a malodor processing apparatus using a biofilter according to an embodiment of the present invention; FIG.
2 is a configuration diagram showing a microorganism-immobilized carrier of a malodor treatment apparatus according to an embodiment of the present invention.
Fig. 3 is a perspective view showing the support of Fig. 2 (a) in detail in the microorganism-immobilized carrier of the malodor treatment apparatus according to the embodiment of the present invention.
FIG. 4 is a conceptual view showing the carrier part in detail in the microorganism-immobilized carrier of the malodor treatment apparatus according to the embodiment of the present invention.
5 is a flowchart showing a method of manufacturing a microorganism-immobilized carrier of a malodor treatment apparatus according to an embodiment of the present invention.
6 is an operational state diagram of a malodor processing apparatus using a biofilter 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. In the following description, only parts necessary for understanding the embodiments of the present invention will be described, and the description of other parts will be omitted so as not to obscure the gist of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor is not limited to the meaning of the terms in order to describe his invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention, so that various equivalents And variations are possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing a malodor processing apparatus using a biofilter according to an embodiment of the present invention; FIG. As shown in the drawing, the malodor processing apparatus using a biofilter according to an embodiment of the present invention has a structure in which a pretreatment unit 200, a biofilter unit 300, and a post-treatment unit 400 are integrally coupled to a body 100 have. The pretreatment unit 200 and the biofilter unit 300 are divided by a partition wall 101 provided in the body 100 and the post-treatment unit 400 is installed inside a stack described later.

An inlet pipe 110 is formed at one side of the body 100 so that odorous air flows into the pre-processing unit 200. The stack 120 is inserted into the other side of the body 100 so that air is introduced into the post-processing unit 400. The washing water supplied to the pretreatment unit 200 is stored in the lower portion of the body 100 while the number of filters supplied to activate the microorganisms in the carrier of the biofilter unit 300 is stored. The stack 120 includes an inner stack 121 inserted into the interior of the body 100 and an outer stack 122 protruding outside the body.

A medicine tank 130 for supplying and storing medicines to the cleansing water and the filter water is installed outside the body 100 and a nutrient tank 140 for supplying and storing nutrients to the filter water is installed. The nutrient tank 140 may also supply nutrients to the cleansing water.

A ring blower 150 is installed outside the body 100 to generate bubbles in the filter water. The body 100 is provided with a pH meter 160 for measuring the pH of the washing water and the filter water and a differential pressure meter 170 for measuring the pressure difference between the front and back of the bio filter unit 300.

The pretreatment unit 200 includes a cleaning water injection nozzle 210 for spraying the cleaning water and a cleaning water injection nozzle 210 for circulating the cleaning water sprayed through the cleaning water injection nozzle 210 A cleaning water circulation pump 220 and a pall ring layer 230 formed of a filling material having a large porosity and specific surface area so as to widen the contact area between the washing water sprayed through the washing water spray nozzle 210 and the air do. A demister 240 for separating liquid droplets is provided at a rear end of the pre-processing unit 200. On the upper side of the washing water injection nozzle 210, a water separator (not shown) for separating steam and water may be installed.

The biofilter unit 300 includes a plurality of carrier layers 310 and 320 and a carrier layer 310 (hereinafter, referred to as " And a filter water circulation pump 340 for circulating the filter water injected through the filter water injection nozzle 330. The filter water injection nozzle 330 filters the water, The plurality of carrier layers 310 and 320 are arranged in a plurality of stages in a vertical direction, but may be arranged in a plurality of stages in a horizontal direction.

The carrier layers 310 and 320 of the biofilter 300 will be described below with reference to FIGS.

The post-treatment unit 400 removes odors remaining in the air that has passed through the bio-filter unit 300, and is installed inside the stack 120. The post-processing unit 400 is provided at the front end of the post-processing unit 400 and includes a demister 410 for separating liquid droplets, and a plurality of adsorbing layers including a dehumidifying agent or activated carbon. In the present embodiment, the plurality of adsorption layers include a primary adsorption layer 420 containing a dehumidifying agent (silica gel or the like) for primarily removing moisture and a secondary adsorption layer 420 containing secondary activated charcoal (granular activated carbon) And an adsorption layer 430. The particle size of the activated carbon is preferably 0.5 to 1.2 mm.

The demister 410 is installed in the inner stack 121 of the body 100 and the primary adsorption layer 420 and the secondary adsorption layer 430 are installed in the outer stack 122 of the body 100.

The cross-sectional area of the flow path through which the fluid flows in the post-processing unit 400 is made larger than twice the cross-sectional area of the flow path through which the air is introduced into the preprocessing unit 200, thereby reducing the flow velocity and increasing the adsorption efficiency. The primary adsorption layer 420 and the secondary adsorption layer 430 are detachably installed in the form of a cartridge to facilitate replacement. The secondary adsorption layer 430 may be installed in a plurality of stages. In this embodiment, the secondary adsorption layer 430 is provided in two stages.

In this embodiment, the carrier layers 310 and 320 of the biofilter 300 are coated with the carrier portions 1200, 2200, and 3200 on the supports 1100, 2100, and 3100 as shown in FIGS. The biofilter comprising the microorganism-immobilized supports 1000, 2000, and 3000 will be described as an example. The carrier portions 1200, 2200, and 3200 may be fixedly coupled to the supports 1100, 2100, and 3100 by various fixing methods.

The carrier layers 310 and 320 may be formed by applying or bonding alginate and polyvinyl alcohol (PVA) to supports 1100, 2100 and 3100 made of synthetic resin or ceramics, And microorganism immobilization supports 1000, 2000, and 3000 having carrier portions 1200, 2200, and 3200 including activated carbon and microorganisms.

The support bodies 1100, 2100 and 3100 may be formed in various shapes such as a tube as shown and the support bodies 1100, 2100 and 3100 may be formed in a thickness of 2/10 to 4/10 volume , Particularly preferably 3/10 volume ratio of the carrier parts 1200, 2200,

The supports 1100, 2100, and 3100 are formed of a synthetic resin or a ceramic. The synthetic resin constituting the supports 1100, 2100 and 3100 may be at least one selected from the group consisting of polyvinyl chloride (PVC), polyethylene (PE) and polypropylene (PP), and any material capable of supporting the load Do. The supports 1100, 2100, and 3100 are formed with passages through which fluids can flow. More specifically, the supports 1100, 2100, and 3100 may be hollow tubes, tubes, or porous structures. Since the supports 1100, 2100, and 3100 are formed with passages for the fluid passing through the inside of the support bodies 1100, 2100, and 3100, organic materials that are subject to biological treatment such as biodegradation can smoothly pass through the microorganism immobilization supports 1000, 2000, and 3000 through the transporting fluids. In the microorganism-immobilized supports 1000, 2000, and 3000 according to an embodiment of the present invention, the supports 1100, 2100, and 3100 are formed of at least one synthetic resin selected from polyvinyl chloride (PVC), polyethylene (PE), and polypropylene 2000 or 3000 due to the pressure or the weight of the microorganism-immobilized supports 1000, 2000, 3000 can be prevented, because the microorganisms immobilized carriers 1000, 2000, 3000) to increase the utilization. More specifically, the microorganism-immobilized supports (1000, 2000, 3000) of the present invention are formed into a columnar support 1100 as shown in Fig. 2A, a support 2100 having a porous structure as shown in Fig. 2B, And may include at least one selected from the support 3100 having a lattice structure as shown in FIG. 2 (c), but is not limited thereto.

More specifically, the support 1100 preferably has a diameter of 50 to 100 mm and a height of 100 to 200 mm. When the diameter of the support body 1100 is less than 50 mm, there is a possibility that the microorganism immobilization support 1000 is damaged because the load due to the stacking of a plurality of the microorganism immobilization supports 1000 is increased. When the diameter of the support body 1100 is more than 100 mm, when the microorganism immobilization supports 1000 are stacked and used, the supporting force against the load is increased, but the total specific surface area is decreased. There is a risk of degradation. When the support 1100 is less than 100 mm in height, the microorganism immobilization supports 1000 are stacked, and when used, the supporting force against the load is strengthened, but the contact time of the microorganisms passing through the microorganism immobilization support 1000 is reduced, The performance of the immobilization support 1000 may be deteriorated. When the height of the support body 1100 is more than 200 mm, there is a fear that the microporous immobilization pellet 1000 is used for a long period of time, and the pore closure due to excessive microbial growth inside the microorganism immobilization pellet body 1000 may occur. The columnar support 1100 having a diameter of 50 to 100 mm and a height of 100 to 200 mm is most preferably used because it has a large specific surface area and can have a high bearing capacity against a load and is preferable from the viewpoints of performance and durability.

As shown in FIG. 2 (a) and FIG. 3, a plurality of plate-like partition walls 1110 may be formed inside the support body 1100. The partition 1110 may be formed of a hard material such as synthetic resin or ceramics in the same manner as the support 1100 and may be formed to widen the specific surface area and microbial contact area of the microorganism immobilization support 1000, do. The partition 1110 is formed so as not to block the flow of the fluid passing through the microorganism immobilization support 1000, as shown in FIG.

Polyvinyl chloride (PVC) is a synthetic resin obtained by polymerizing a vinyl chloride monomer (VCM), and a supporting body 1100, 2100, 3100 is formed through a columnar molding process using a powder. The durability of the support bodies 1100, 2100, and 3100 can be improved due to good chemical resistance, flame retardance, and electrical insulation, and thus can be used as a main material for forming the supports 1100, 2100, and 3100.

Ceramics are made by heating base metals or inorganic materials at high temperatures. More specifically, engineering ceramics made of silicon carbide (SiC) or silicon nitride (Si ₃ N ₄ ) are used for hardness, chemical resistance, flame retardancy, It can be used as a molding material for the supports 1100, 2100 and 3100 because the electric insulation is good.

The carrier parts 1200, 2200 and 3200 are formed by applying a mixed solution containing alginate, polyvinyl alcohol (PVA), activated carbon and microorganisms thinly on the surfaces of the supports 1100, 2100 and 3100 by high- . As shown in FIG. 4, micropores 1210, 2210, and 3210, which are micro pores, may be formed in the carrier portions 1200, 2200, and 3200 while the mixed solution is cured. The microorganisms contained in the carrier parts 1200, 2200, and 3200 can be further propagated inside these micropores 1210, 2210, and 3210. Therefore, the microorganism-immobilized supports 1000, 2000, and 3000 according to the embodiments of the present invention can be manufactured by mixing microorganisms evenly in the carrier parts 1200, 2200, and 3200, The microorganisms immobilized on the support parts 1200, 2200 and 3200 are formed at a temperature of from 20 to 40 DEG C for 24 to 24 hours, Once cultured for 36 hours, microorganisms can proliferate and become suitable for biological treatment of organic matter.

Since alginate is a hydrophilic natural polymer, it has no toxicity to microorganisms and can be crosslinked in a saturated boric acid aqueous solution or calcium chloride aqueous solution to be cured into a network structure. The micropores 1210, 2210, and 3210 can be further formed by this network structure, and the microorganisms can be collectively fixed within the micropores 1210, 2210, and 3210. Since the microorganism-immobilized supports 1000, 2000, and 3000 according to the embodiments of the present invention are already in a state where the microorganisms have already been mixed with the alginate when the carrier portions 1200, 2200, and 3200 are formed while the alginate is cured, The microorganisms 1210, 2210, and 3210 in the interior and the exterior of the units 1200, 2200, and 3200 can be uniformly distributed. In addition, alginate, a hydrophilic natural polymer, has a reaction temperature of 60 to 65 ° C during curing and is not so high. Therefore, it is not necessary to inoculate the microorganisms only after the formation of the pores capable of immobilizing the microorganisms is completed, but the microorganisms can be mixed in advance before the pores are formed, and the microorganisms can withstand the reaction temperature by the pore formation .

Meanwhile, the microorganisms contained in the carrier parts 1200, 2200, and 3200 are preferably bacillus bacteria having excellent growth even at a reaction temperature of 60 to 65 ° C. Bacillus that is suitable for decomposing the organic matter to be treated includes Bacillus putrificus having high proteolytic ability, bacillus thuringiensis having high insecticidal power, lactobacillus lactis such as lactobacillus acidophilus, and bacillus mesentericus and bacillus subtilis, which are excellent in viability at high temperatures.

Polyvinyl alcohol (PVA) is a water-soluble synthetic polymer and can be hardened by an aqueous boric acid solution or a saturated aqueous boric acid solution. Polyvinyl alcohol is highly hydrophilic enough to absorb up to 98 times the volume of water. Since the microorganism immobilization supports 1000, 2000, and 3000 according to the embodiment of the present invention include polyvinyl alcohol in the carrier portions 1200, 2200, and 3200, the carrier portions 1200, 2200, 3200 can not be easily dried and thus the growth environment of the microorganisms proliferated in the micropores 1210, 2210, 3210 of the carrier parts 1200, 2200, 3200 can be kept constant, desirable. The polyvinyl alcohol has a porosity of usually 60 to 70%. However, when the support 1100, 2100, 3100 is rotated and extruded through the high pressure injection nozzle into the support 1100, 2100, 3100, And is applied so as to form a network structure, so that porosity of 90 to 95% is possible. The jet pressure is preferably about 2 atmospheres, but is not limited thereto.

Since the activated carbon has a large specific surface area, the adsorption ability of the substance is excellent. Therefore, not only is it advantageous for immobilizing microorganisms, but also organic substances and odors to be treated can be adsorbed well, so that it is preferable to be included in the carrier portion 1100 from the viewpoint of performance.

5 is a flowchart showing a method of manufacturing a microorganism-immobilized carrier of a malodor treatment apparatus according to an embodiment of the present invention. As shown in the drawing, the method of manufacturing the microorganism immobilization supports 1000, 2000, and 3000 according to the embodiment of the present invention includes a mixing step S100, a rotating step S200, a spraying step S300, S400).

In the mixing step S100, alginate, polyvinyl alcohol (PVA), activated carbon and microorganisms are mixed and stirred to prepare a mixed solution containing alginate, polyvinyl alcohol (PVA), activated carbon adsorbent and microorganisms. The mixed solution may contain at least one selected from polyurethane and polyethylene and zeolite. The microorganism is bacillus. The stirring is preferably performed for about 1 to 2 minutes at a stirring speed of about 700 rpm to 1,100 rpm, but is not limited thereto. The mixed solution may further contain an aqueous solution of saturated boric acid and an aqueous solution of calcium chloride to cure alginate and polyvinyl alcohol. Since the mixture liquid is cured after 1 to 3 hours from the start of mixing, the rotation step (S200) and the injection step (S300) described later are completed within about 1 to 3 hours from the start of the mixing step (S100).

In the rotating step (S200), a passage of fluid passing through the inside is formed, and the support (1100, 2100, 3100) including synthetic resin or ceramic is rotated. By rotating the supports 1100, 2100 and 3100, the mixed liquid sprayed in the spraying step S300 described later can be applied while forming the voids. The synthetic resin constituting the supports 1100, 2100 and 3100 may be at least one selected from the group consisting of polyvinyl chloride (PVC), polyethylene (PE) and polypropylene (PP), and any material capable of supporting the load Do. The supports 1100, 2100, and 3100 are formed with passages through which fluids can flow. More specifically, the supports 1100, 2100, and 3100 may be hollow tubes, tubes, or porous structures.

In the spraying step S300, the mixture liquid is sprayed on the rotating support bodies 1100, 2100 and 3100 to apply the mixture liquid to the surfaces of the support bodies 1100, 2100 and 3100. The spraying method is preferably a high-pressure spraying method. When the supporters 1100, 2100, and 3100 are rotated while being extruded through the high-pressure spray nozzles into the supports 1100, 2100, and 3100, the extruded extrudate is extended to have a network structure so as to have a porosity of 90 to 95% Do. The jet pressure is preferably about 2 atmospheres, but is not limited thereto.

In the curing step S400, the mixture liquid applied to the support bodies 1100, 2100 and 3100 is cured to form the carrier parts 1200, 2200 and 3200. Micropores 1210, 2210, and 3210, which are micro pores in micro units, are formed in the carrier units 1200, 2200, and 3200 formed through the curing step (S400) Immobilized microorganism immobilization supports 1000, 2000, and 3000 are completed. The completed microorganism immobilization supports (1000, 2000, 3000) may be further subjected to a culture step or an inoculation step as occasion demands, but are not limited thereto.

6 is an operational state diagram of a malodor processing apparatus using a biofilter according to an embodiment of the present invention. As shown in the figure, the odor air flowing into the lower portion of the pretreatment unit 200 through the inlet pipe 110 is physically cleaned by the washing water injected through the washing water injection nozzle 210 while passing through the poling layer 230 .

The air that has passed through the pretreatment unit 200 passes through the support layers 310 and 320 together with the filter water injected from the upper side to the lower side of the biofilter unit 300 through the filter water injection nozzle 330, And the odor is removed. The filter number activates the microorganisms in the carrier layers 310 and 320, and the filter water is supplied with nutrients through the nutrient tank 140 to increase microbial activity.

The carrier layers 310 and 320 of the present invention in which the carrier parts 1200, 2200 and 3200 are formed on the supports 1100, 2100 and 3100 to form the microorganism immobilization supports 1000, 2000 and 3000, And pushing phenomenon is prevented, thereby preventing the differential pressure from rising and increasing the odor removal efficiency. The support portions 1200, 2200 and 3200 are formed in the support bodies 1100, 2100 and 3100 to form a support, thereby preventing channeling of the support layers 310 and 320, And the stable odor decomposition efficiency is maintained.

The pH adjustment of the cleansing water and the filter water is controlled by chemicals (oxidizing agent) supplied from the chemical tank, and the pH is measured by the pH meter 160. The pressure difference between the front and back of the biofilter unit 300 is measured by a differential pressure meter 170. The ring blower 150 generates air bubbles in the filter water so that the air contained in the filter water is easily discharged.

The air removed from the bio filter unit 300 is removed through the post-treatment unit 400 before being discharged to the outside, while the polymer odor substances that have not been removed are removed, thereby improving the odor removal efficiency. The moisture is removed through the first adsorption layer 420 and the polymeric odor material is removed through the second adsorption layer 430 to prevent it from being scattered to the outside of the deodorizer. The secondary adsorption layer 430 also has the effect of removing the weak odor that may occur in the carrier of the biofilter unit 300. Since the primary adsorption layer 420 and the secondary adsorption layer 430 are detachably installed in the form of a cartridge, they can be easily replaced.

The demister 240 installed at the rear end of the preprocessing unit 200 and the demister 410 installed at the front end of the postprocessing unit 400 remove the liquid droplet to increase the odor removal efficiency.

Although the embodiments of the present invention have been described above, the embodiments are illustrative and not restrictive. That is, a chemical liquid cleaning unit, a chemical treatment unit, or the like may be provided between the biofilter unit 300 and the post-treatment unit 400 of the present embodiment.

It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit of the invention and the scope of the appended claims.

100: body 110: inlet pipe
120: Stack 121: Internal stack
122: outer stack 130: drug tank
140: nutrient tank 150: ring blower
160: pH meter 170: Differential pressure gauge
200: Pretreatment unit 210: Cleaning water injection nozzle
220: Cleaning water circulation pump 230: Polling layer
240, 410: Demister 300: Biofilter unit
310, 320: carrier layer 330: filter water injection nozzle
340: filter water circulation pump 400: post-
420: primary adsorption layer 430: secondary adsorption layer
1000, 2000, 3000: microorganism immobilization carrier
1100, 2100, 3100: Support
1200, 2200, 3200:

Claims (5)

A pretreatment unit for pre-treating the air containing odor,
A biofilter for biodegrading the air passing through the biofilter to remove odors;
And a post-treatment unit for removing odors remaining in the air passing through the bio-filter unit;
Wherein the biofilter comprises a support comprising a synthetic resin or ceramic and a carrier portion coated or bonded to the support and comprising a carrier portion comprising alginate, polyvinyl alcohol (PVA), activated carbon and microorganisms, Respectively,
Wherein the post-treatment unit comprises a plurality of adsorption layers including a dehumidifying agent or activated carbon. The method according to claim 1,
Wherein a cross-sectional area of a flow path that flows out of the post-treatment unit is greater than a flow cross-sectional area of the flow path to the pretreatment unit, thereby reducing the flow rate. The method according to claim 1,
Wherein the plurality of adsorption layers are composed of a primary adsorption layer containing a dehumidifying agent that primarily removes moisture and a secondary adsorption layer containing activated carbon to remove polymeric odor substances. Processing device. The method according to claim 1,
The pretreatment unit may include a spray nozzle for spraying the washing water and a pall ring layer formed of a filling material having a large porosity and specific surface area to widen the contact area between the washing water sprayed through the spray nozzle and the air. A malodor processing device using a bio filter. The method according to claim 1,
And a demister for separating droplets is installed at a rear end of the pre-processing unit or at a front end of the post-processing unit.

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