KR20100033134A - Apparatus for deodorizing sewage treatment plant sludge by using native microorganisms - Google Patents

Abstract

PURPOSE: A deodorizing device using indigenous microorganism is provided to effectively remove bad smell of dehydration cake and all kinds of the sludge produced in a sewage disposal plant, a sludge thickener or a dehydrator. CONSTITUTION: A deodorizing device using indigenous microorganism comprises the following: an indigenous microorganism actuator mounted on an inner side of the device; an indigenous activity tank activating the microorganism with a proliferation process; a first deodorization tank(3) eliminating bad smell; and a second deodorizing tank completely removing the gad smell for an object processed.

Description

Deodorizing device using indigenous microorganisms to remove odor of sewage treatment plant sludge {APPARATUS FOR DEODORIZING SEWAGE TREATMENT PLANT SLUDGE BY USING NATIVE MICROORGANISMS}

The present invention relates to a deodorizing device that can remove environmentally friendly and effective odors of various sludges generated in sewage treatment plants using native microorganisms.

In Korea's waste management law, 'sludge', which has a water content of less than 95% or a solids content of more than 5%, has almost similar characteristics when the urban sewage is a major source of inflow. In addition, the type of sludge generated is composed of fresh sludge removed from the initial sedimentation basin and surplus sludge (active sludge) removed from the secondary sedimentation basin. In some sewage treatment plants, manure is introduced and treated with sludge.

The final dewatering cake produced in the sewage treatment plant depends on the sludge treatment process. In general, the amount of fresh sludge (primary sludge) and surplus sludge (secondary sludge) generated in the standard activated sludge water treatment process is about 1% of the total inflow sewage, and 40 to 90% of the solids in the sludge are organic matter. There are many problems in disposing of it because it has a water content of 97-99%. That is, organic matter contained in a large amount of sludge is extremely unstable, easily decaying, odor occurs during decay, as well as harmful substances to humans and ecosystems, and may cause hygiene problems.

In particular, since odors are generally composed of multi-component complex substances, it is difficult to determine only what kind of odor affects the human body by the intensity of the odor alone. It has been reported that odors from sewage treatment plants negatively affect residents in various ways, both physical and mental, including respiratory, circulatory, digestive, reproductive and endocrine systems. Therefore, by effectively controlling the odor of sewage treatment plant sludge, it is necessary to remove the stigma that the sewage treatment plant is a hateful facility and to give local residents a sense of environmentally friendly facilities.

In the early 1990s, Korea established and promoted the `` Comprehensive Measures for Clear Water Supply '', and began to install public sewage treatment facilities in urban areas with a high concentration of population. Are treated in public sewage treatment facilities. As of the end of 2005, there were 294 public sewage treatment facilities in Korea, with the capacity of 22,568 thousand tons. The amount of sewage sludge produced in Korea is generally 0.3 kg per 1 m3 of sewage, water content is about 78% and organic matter content is about 47%, which translates into 6,770 tons of sewage sludge.

Recently, in the developed countries including the United States, research is being actively conducted to decompose odorous substances (mainly organic substances) by enzymatic action by microorganisms. Microorganisms that can be used for biodegradation of odorous substances can be classified into autotrophic bacteria and heterotrophic bacteria. Autotrophic bacteria are microorganisms that can be grown solely by inorganic materials, such as bacterium, which can synthesize complex organic materials that require sulfur, small amounts of inorganic salts, water and carbon dioxide. Therefore, autotrophic bacteria can be usefully used for the conversion of inorganic substances. However, since autotrophic bacteria have a very low growth rate due to a slow energy conversion process, there have been no reports of successful application of these to inorganic material conversion. Moreover, it is known that this bacterium can be applied to only a few simple processes.

Heterotrophic bacteria, on the other hand, are microorganisms that decompose organic sources of carbon and other organic materials to obtain nutrients and energy for growth. These heterotrophic bacteria adapt particularly well to the conversion of organic contaminants, but in this case it is very difficult to enumerate the bacteria for optimal conversion of specific contaminants. However, the conversion process by these is much faster than that performed by autotrophic bacteria. Since the conversion of organic compounds by heterotrophic bacteria requires oxygen, in most cases the introduction of oxygen and bacteria acts as a limiting step.

Based on this fact, it is considered that the biological method using microorganism is the most economical and environmentally friendly method without secondary pollution for the removal of odor generated from sludge of sewage treatment plant. Accordingly, the present inventors developed a deodorization apparatus using native microorganisms to remove odors of sludge from sewage treatment plants, and thus, primary sludges, secondary sludges, and primary sludges containing manure and sewage treatment plants, dehydrators, and dehydration. To solve the odor problem that occurs in the cake.

Accordingly, an object of the present invention is to provide a deodorizing apparatus using native microorganisms to effectively remove odor generated from sludge of sewage treatment plant in an environmentally friendly way.

In order to achieve the above object, the present invention effectively eliminates the odor of various sludges, such as primary sludge, secondary sludge, manure sludge and the like, a concentration tank, a dehydrator and / or a dehydration cake generated in a sewage treatment plant using native microorganisms. Provide a deodorizing device that can be removed.

Deodorization apparatus using indigenous microorganisms to remove odor of sewage treatment plant sludge according to the present invention, various sludges such as primary sludge, secondary sludge, and manure sludge generated in sewage treatment plant, and thickening tank, dehydrator and / or dehydration cake Odor can be effectively removed in an environmentally friendly way using native microorganisms.

Deodorization apparatus using native microorganism according to the present invention is a device for activating native microorganisms to remove the odor of sludge in sewage treatment plant, the colonies made by spores by culturing Bacillus sp. Indigenous microorganism activation tank designed to further promote the activation of native microorganisms germinated spores under the conditions to be activated and propagated through the secondary deodorization tank; A first deodorizing tank for first removing odorous substances from a to-be-processed object which has passed through the native microorganism activating tank under conditions in which oxygen and activated native microorganisms are continuously supplied; And a second deodorization tank which completely removes odorous substances from the to-be-processed object which has passed through the first deodorization tank under conditions in which oxygen and activated native microorganisms are continuously supplied.

Hereinafter, the present invention will be described in detail with reference to a deodorizing apparatus using native microorganisms to remove odors of sludge in sewage treatment plant shown in the accompanying drawings.

1 is a schematic diagram showing a deodorization apparatus using native microorganisms designed for removing odor of sewage treatment plant sludge according to the present invention. Deodorizing apparatus 1 using the native microorganism according to the present invention includes three reaction tanks composed of a native microorganism activating tank 2, a first deodorizing tank 3 and a second deodorizing tank 4, An indigenous microorganism activator 5 is installed in 2).

Deodorization apparatus using native microorganism according to the present invention (1) is a variety of sludge generated in the sewage treatment plant, that is, the first sludge (fresh sludge) generated in the initial sedimentation basin in the water treatment process of the standard activated sludge method, merged into the sewage treatment plant It is a device designed to effectively treat odor generated from primary sludge containing manure introduced for treatment and secondary sludge (activated sludge) mainly composed of biological microorganisms using native microorganisms.

First, various sludges generated in the sewage treatment plant are introduced into the native microorganism active tank 2 of the deodorizing device 1 using the native microorganisms according to the present invention through the raw water inlet 10. An indigenous microorganism activator 5 filled with an indigenous microbial colony 6 is installed in the indigenous microbial activator 2. Indigenous microflora aggregates 6 in the present invention is a native microorganism isolated from soybean, the identified Bacillus subtilis (Bacillus subtilis) BSDL1 (accession number: separated from KFCC-11399P) and humus, identified MEGATHERIUM Bacillus (Bacillus megaterium ) DSM3 (Accession No .: KFCC-11402P) was cultured in spores.

These microorganisms of the genus Bacillus exhibits excellent nitrification and denitrification as microorganisms that can efficiently remove organic substances and nutrients, especially nitrogen, in wastewater and effectively remove odors generated in the process. In addition, since they enable indigenous microbial communities present in the target wastewater to create an environment in which they can treat their own wastewater, they can expect more effective removal of odors generated in the wastewater treatment process.

The native microbial colony 6 according to the present invention is prepared in spores by culturing a large amount of Bacillus subtilis BSDL1 and Bacillus megaterium DSM3 exhibiting excellent nitrification and denitrification. . Specifically, the strains were inoculated in a nutrient medium for cell proliferation and incubated for 24 to 48 hours at 24 to 26 ° C., and then the seed culture was inoculated in a nutrient medium for fermentation to culture temperature 24 to 26 ° C., pH 6.6 to 7.0, and dissolved. Oxygen concentration is incubated in a shaker at 180 to 200 rpm until the endospores are completely formed while controlling the saturation value to be maintained at 10 to 60. The microbial culture was concentrated using an UV spectrophotomoter so that the optical density (O.D) value of the microorganism was 0.5 to 1.8 from the log stage (growth) to the stationary phase. The concentrated culture solution is mixed with various inorganic materials necessary for the growth of microorganisms in a liquid state and then fired to prepare a microbial colony. The native microbial colony thus prepared contains 5 to 6% of the concentrated culture medium of Bacillus subtilis BSDL1 and Bacillus megaterium DSM3 based on the weight of the inorganic material.

The native microbial colony 6 according to the present invention is able to survive by adapting to the extreme environment of the inflowing sludge because native microorganisms exist in a spore state, and then are activated by oxygen and organic material supplied to germinate spores. Not only can it be activated through proliferation, but also the activation of microorganisms contained in the sludge can be effectively used to remove odors generated from sludge in sewage treatment plants.

The indigenous microorganism activator 5 filled with the indigenous microbial colony 6 smoothly mixes with the indigenous microorganisms in which oxygen and organic substances introduced into the indigenous microbial activator 2 are spores in the indigenous microbial community 6. It is desirable to have a chemically stable stainless material with a structure having a plurality of holes so that they can be supplied to germinate spores and be activated through growth and proliferation. The activated native microorganism is dissolved in the native microorganism activator 2 and mixed with the sludge introduced through the raw water inlet 10 to receive the organic material.

Oxygen is supplied to the indigenous microorganism activator 2 through the blower 8 and the diffuser 9, wherein the dissolved oxygen (DO) in the indigenous microorganism activator 2 is about 0.5 to 0.6 mg / l. It is desirable to maintain. If the amount of dissolved oxygen is less than 0.5, the activity of the microorganism may be disturbed, whereas if the amount of dissolved oxygen exceeds 0.6, it may be helpful for the activity of the microorganism, but it is not economical because it requires a lot of maintenance costs.

Bacillus subtilis BSDL1 and Bacillus megaterium DSM3 in the indigenous microbial colony 6 filled in the indigenous microorganism activator 5 are spores germinated by the supply of organic matter and oxygen and are activated through growth and proliferation. In addition, the native microorganism activator 2 has a large amount of native microorganisms activated in the native microorganism activator 5 and activated native microorganisms conveyed through the conveying line 7 in the second deodorization tank 4.

The to-be-processed object which passed the indigenous microorganism active tank 2 flows into the 1st deodorization tank 3 through the 1st deodorization tank inlet 11. The first deodorization tank (3) is a primary microorganism activated in the native microorganism activator (2) by using oxygen continuously supplied through the diffuser (9) in the blower (8) to remove the odor component from the sludge first Reactor. It is preferable that the dissolved oxygen amount of the 1st deodorization tank 3 is 0.4-0.5 mg / L.

The to-be-processed object which passed through the 1st deodorization tank 3 flows into the 2nd deodorization tank 4 through the 2nd deodorization tank inlet 12. As shown in FIG. The second deodorization tank (4) is a secondary to remove the odor component remaining in the sludge after the primary treatment of activated microorganisms under the condition that oxygen is continuously supplied through the diffuser (9) in the blower (8) Reactor. It is preferable that the dissolved oxygen amount of the 2nd deodorization tank 4 hold 0.3-0.4 mg / L.

The second deodorization tank (4) has 10 to 25% of the object to be treated in the second deodorization tank (4) through the conveying line (7) to continuously and continuously supply the activated native microorganisms to the native microorganism activation tank (2). Is returned to the native microorganism activator (2). At this time, in the case of sewage treatment plant sludge containing only the primary sludge and the secondary sludge, the return rate is 10 to 15% of the inflow flow rate, and in the case of the sewage treatment plant sludge containing the primary sludge and the secondary sludge containing the manure. It is designed so that the conveyance rate is 20 to 25% of the inflow flow rate. In addition, the conveying line 7 is provided with a filter so that solids such as sludge are filtered out and the filtrate containing only activated native microorganisms is conveyed to the native microorganism activating tank 2.

Deodorization apparatus using native microorganism according to the present invention is the first deodorization tank in which the native microorganism and sludge introduced into the raw water inlet 10, the first deodorization tank (3) into which the sludge is introduced into the native microorganism active tank (2) Deodorization to discharge sludge from which the odor is completely removed from the inlet 11, the second deodorization tank inlet 12 into which activated native microorganisms and sludge flow into the second deodorization tank 4, and the second deodorization tank 4. The tank outlet 13 may be further included, and these are designed to be disposed in a zigzag form on a diagonal line with each other to effectively use the entire area of the reaction tank of the deodorizing device 1 using native microorganisms.

In the deodorizing device (1) using the native microorganism according to the present invention composed of the native microorganism active tank (2), the first deodorizing tank (3) and the second deodorizing tank (4) as described above, the primary sludge and the secondary sludge If the sewage treatment plant sludge containing bays is targeted, the residence time of the entire reaction tank is adjusted to 5 to 6 hours, and if the sewage treatment plant sludge containing the primary sludge and the secondary sludge containing manure are targeted. It is preferable to adjust the residence time of the entire reactor to 7 to 8 hours. It is preferable that the capacity of each reaction tank comprises a native microorganism activation tank 2: 1st deodorization tank 3: 2nd deodorization tank 4 in 1: 6: 3.

Deodorizer using native microorganism according to the present invention is excellent in the deodorizing effect on the odor of sludge generated during the treatment of sewage treatment plant using Bacillus subtilis BSSL1 and Bacillus megaterium DSM3 excellent in nitrification and denitrification Therefore, it can be very useful for the treatment of sewage, sewage, manure, livestock waste or industrial wastewater.

Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are only for illustrating the present invention more specifically, it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples in accordance with the gist of the present invention.

Example  1: native microorganism Colony  Produce

In order to apply to the deodorizing apparatus using indigenous microorganisms according to the present invention devised for removing odor of sewage treatment plant sludge, indigenous microbial colonies were prepared as follows.

First, 2,000 ℓ of fermentation broth (nutrient broth; beef extract 3 g, enzymatic digest of gelatin 5 g, pH 6.8 ± 0.2) was added to a fermenter of 3,000 ℓ, and sterilized for 15 minutes at 121 ° C. under high pressure steam. . Bacillus subtilis BSDL1 (KFCC-11399P) and Bacillus megaterium DSM3 (KFCC-11402P) were incubated in nutrient medium for cell proliferation for 24 hours, and then the culture solution was inoculated into the fermenter and culture temperature 24 to 26 ℃, pH 6.6 to 7.0, dissolved oxygen concentration was cultured until the endogenous spores were completely formed while adjusting the air flow rate and agitation rate to maintain a saturation value of 10 to 60. Each microbial culture is concentrated using a UV spectrophotomoter so that the OD (optical density) value of the microorganism is 0.5 to 1.8 from the logarithmic stage (growth) to the stationary phase. It is fired together with various inorganic materials to produce microbial colonies. The native microbial colony thus prepared contains 5 to 6% of the concentrated culture solution of Bacillus subtilis BSDL1 and Bacillus megaterium DSM3 based on the weight of the inorganic material.

Example  2: Deodorization effect using artificial wastewater

In order to confirm the deodorizing effect of the deodorizing device using the native microorganism according to the present invention designed for removing the odor of sewage treatment plant sludge, first of all, the odor removal experiment for artificial wastewater containing various odorous substances on a laboratory scale The deodorizing performance of the aggregates was investigated.

Deodorization experiments were carried out in a batch process, in which two 100 ml flasks were ammonia (NH ₃ ), hydrogen sulfide (H ₂ S), methylmercaptan (CH ₃ SH) and methyl sulfide ((CH ₃ ) ₂ S ), After the artificial wastewater containing 1.12 ppm, 12.6 ppb, 1.2 ppb, and 7.2 ppb, respectively, was added to one flask, and the native microbial colony prepared in Example 1 was sealed, and the other flask was sealed. Odor generated in each flask was collected twice a day and analyzed by gas chromatography (gas chromatography, GC), the results are shown in Table 1 below.

Item Control experiment Emission limit Indigenous microorganisms not applied Native microbes Ammonia (NH ₃ ) 1.12 ppm 0.45 ppm <1.0 ppm Hydrogen sulfide (H ₂ S) 12.6 ppb 5.9 ppb <20 ppb Methylmercaptan (CH ₃ SH) 1.2 ppb 0.4 ppb <2.0 ppb Methyl sulfide ((CH ₃ ) ₂ S) 7.2 ppb 1.45 ppb <10 ppb

Table 1 shows the gas chromatography results after 6 days of deodorization experiment. Indigenous according to the present invention for a composite of ammonia (NH ₃ ), hydrogen sulfide (H ₂ S), methylmercaptan (CH ₃ SH) and methyl sulfide ((CH ₃ ) ₂ S), which act as a source of odor in sewage treatment plants It was confirmed that the microbial community shows a very good deodorizing effect. Specifically, six days after the experiment, in the indigenous microbial colony-applied flasks compared to the indigenous microbial colonies, the ammonia 60%, hydrogen sulfide 53%, methyl mercaptan 67% and methyl sulfide 80% compared to the initial concentration. Has been removed to meet all emission limits.

Example  3: containing manure Sludge  Deodorization effect confirmed

In order to investigate the odor removal effect on the actual sludge of the native microbial colony prepared in Example 1, the following experiments were performed using primary sludge and secondary sludge containing manure as raw water.

Specifically, a reactor composed of an indigenous microorganism activator having a capacity and resources as shown in Table 1 , a first deodorization tank, and a second deodorization tank was made of acryl, and the indigenous microorganism community prepared in Example 1 in the indigenous microorganism activation tank A native microbial activator filled with a sieve was mounted. Gas chromatographic analysis of the amount of methyl sulfide ((CH ₃ ) ₂ S) in the sludges of primary and secondary sludges containing manure when the native microbial colonies of the present invention were not applied to the treatment process and when they were applied Analysis by graphy. At this time, the residence time of the entire reactor was adjusted to 8 hours, and the effluent was retaken and analyzed for each hour. In the previous previous study, a 48-hour follow-up deodorization experiment was performed based on the result that it took 48 hours for the Bacillus sp. Inoculated spores in the native microbial colony to be fully activated.

Reactor and instrument standard Remarks Native microorganism activator 5.0 L (L = 6.2 cm B = 20 cm, H = 40 cm) rectangle First deodorization tank 30 L (L = 40 cm, B = 20 cm, H = 40 cm) rectangle 2nd deodorization tank 15 L (L = 20 cm, B = 20 cm, H = 40 cm) rectangle Native microbial activator 0.2 L (L = 5 cm, B = 5 cm, H = 10 cm)  rectangle pH, temperature measuring instrument Orione 250A pH, temperature measurement Transfer pump Master-flex pump Metering pump air blower SPP-200GJ-H 40 L / min

                            Time item enemy 3 6 9 12 24 48 Methyl sulfide (CH ₃ ) ₂ S (ppb) Indigenous microorganisms not applied 30.24 10.6 7.81 6.72 6.33 3.94 3.52 Native microbes 6.94 5.01 3.54 0.54 0.31 0.15

As shown in Table 3 , the odor removal efficiency by the native microorganisms during the residence time of 8 hours, the activity of native microorganisms increased over time, and the removal efficiency increased proportionally. In particular, after 12 hours, the concentration of methyl sulfide ((CH ₃ ) ₂ S) was reduced to 0.54 ppb and the removal efficiency was 98.2%, confirming that odorous substances were completely removed. In the sensory experiment, after 12 hours, the odor disappeared from the sludge and only microbial smell was observed.

The specific parts of the present invention have been described in detail above, and it is apparent to those skilled in the art that such specific descriptions are merely preferred embodiments, and thus the scope of the present invention is not limited thereto. something to do. Thus, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

1 is a block diagram of a deodorization apparatus using indigenous microorganisms according to the present invention designed for removing odor of sewage treatment plant sludge.

* Description of the symbols for the main parts of the drawings *

1: Deodorizer using indigenous microorganisms in sludge of sewage treatment plant

2: native microorganism activator, 3: first deodorization tank

4: second deodorization tank, 5: native microorganism activator

6: native microbial colony, 7: return line

8: blower, 9: diffuser

10: raw water inlet, 11: first deodorization tank inlet

12: second deodorization tank inlet, 13: deodorization tank outlet

Claims (15)

Deodorizing apparatus using a native microorganism that is composed of a native microorganism active tank, the first deodorizing tank and the second deodorizing tank, the native microorganism activator filled with the native microorganism population in the native microorganism active tank, effectively removes the odor of the sewage treatment plant sludge . The method of claim 1, A native microorganism activator in which sludge is introduced, the native microorganism colony in the spore state germinates spores under conditions in which oxygen and organic substances are supplied, and is activated through a proliferation process; A first deodorizing tank for first removing odorous substances from a to-be-processed object which has passed through the native microorganism activating tank under conditions in which oxygen and activated native microorganisms are continuously supplied; And And a second deodorizing tank for completely removing malodorous substances from the to-be-processed object which has passed through the first deodorizing tank under conditions in which oxygen and activated native microorganisms are continuously supplied. The method of claim 1, The native microorganism active tank, the first deodorizing tank and the second deodorizing tank is connected to each of the blower and the diffuser, characterized in that the oxygen is supplied, deodorization apparatus using native microorganisms. The method of claim 1, Raw water inlet through which sludge flows into the native microorganism activating tank, a first deodorizing tank inlet activated by the native microorganism and sludge into the first deodorizing tank, which is designed to be disposed in a zigzag form on a diagonal line with each reaction tank, And a second deodorization tank inlet through which activated native microorganisms and sludge flow into the second deodorization tank, and a deodorization tank outlet for discharging sludge from which the odor is completely removed from the second deodorization tank. Deodorizer using microorganisms. The method of claim 1, The native microorganism is Bacillus subtilis ( Bacillus subtilis) BSDL1 MEGATHERIUM and Bacillus (Bacillus megaterium ) Deodorizing apparatus using indigenous microorganisms, characterized in that DSM3. The method of claim 1, The indigenous microorganism colony is produced by culturing Bacillus subtilis BSDL1 and Bacillus megaterium DSM3 in spores, concentrating the culture solution and mixing with inorganic substances, and then firing. . The method of claim 6, The indigenous microorganism colony is deodorizing apparatus using indigenous microorganisms, characterized in that containing 5 to 6% by weight of the inorganic matter culture concentration of Bacillus subtilis BSDL1 and Bacillus megaterium DSM3. The method of claim 1, Dissolved oxygen (DO) in the indigenous microorganism active tank is characterized in that it is maintained in the range of 0.5 to 0.6 mg / L, deodorizing device using indigenous microorganisms. The method of claim 1, Deodorizing apparatus using indigenous microorganisms, characterized in that the dissolved oxygen in the first deodorizing tank is maintained in the range of 0.4 to 0.5 mg / L. The method of claim 1, Deodorizing apparatus using indigenous microorganisms, characterized in that the dissolved oxygen in the second deodorizing tank is maintained in the range of 0.3 to 0.4 mg / L. The method of claim 1, The deodorizer is used to remove odors generated from any one of primary sludge (fresh sludge), secondary sludge (active sludge), manure containing primary sludge, sewage treatment plant thickener, concentrator and sludge cake. Deodorizing device using a native microorganism, characterized in that for removing. The method of claim 1, Deodorizing apparatus using native microorganisms, characterized in that 10 to 20% of the activated native microorganisms in the treatment in which the reaction is terminated in the second deodorizing tank is returned to the native microorganism active tank through the return line. The method of claim 12, When the sludge is a mixture of primary sludge and secondary sludge, the return rate of native microorganisms returned from the second deodorization tank to the native microorganism activator is 10 to 15%, and the sludge is composed of manure-containing primary sludge and secondary sludge. In the case of a mixture, the deodorization apparatus using indigenous microorganisms characterized in that the return rate of the indigenous microorganisms returned from the second deodorization tank to the indigenous microorganism active tank is 20 to 25%. The method of claim 1, When the sludge is a mixture of primary sludge and secondary sludge, the residence time of the introduced sludge in the deodorizing device is 5 to 6 hours, and when the sludge is a mixture of manure-containing primary sludge and secondary sludge, Deodorization apparatus using indigenous microorganisms, characterized in that the residence time of the sludge in the deodorization device is 7 to 8 hours. The method of claim 1, A deodorizing apparatus using indigenous microorganisms, characterized in that the capacity of the reaction tank comprises a native microorganism active tank: a first deodorizing tank and a second deodorizing tank of 1: 6: 3.

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