JP2007283239A - Deodorization method and deodorizing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To continuously maintain preferable deodorization over a long period by a simple method and device structure, by circulating a microorganism cultivating liquid having a deodorizing action and mixing it with odorous gas. <P>SOLUTION: This deodorization method comprises a deodorizing process for injecting odorous gas requiring deodorization into the microorganism cultivating liquid and deodorizing the odorous gas by an odor decomposition action of the microorganisms in a deodorization tank; a cultivating process for supplying an energy resource like rice bran or rice washing water to the microorganism cultivating liquid in a cultivation tank with lowered function after deodorization for recovering the deodorization function; and a circulation process for returning the microorganism cultivating liquid with the recovered function to the deodorization tank via a circulation connection pipe for reuse for deodorizing the odorous gas. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a deodorizing method and a deodorizing apparatus capable of continuously deodorizing, for example, excreta discharged from livestock farms and malodor generated from compost produced therefrom.

  Livestock farms where poultry, pigs, cattle, and other livestock are raised, livestock excretion and livestock collection from these farms, and compost production using these excreta Offensive odors generated from workplaces, factories, etc. cause troubles with neighboring residents and are a major problem affecting the lives of neighboring residents.

In particular, with the recent advancement of residential areas in the suburbs, the distance between livestock farms and factories and private houses tends to be closer, and the need for complete deodorization of off-flavors and odors is increasing.
In general, one pig in a pig farm is said to generate excrement for 10 humans, and pig farms that handle many pigs are struggling to respond to complaints from neighboring residents regarding the bad odor that occurs. Is the reality.

In addition, most of the livestock excreta are composted. Complaints from neighboring residents have been received regarding the intense odor generated from factories and workplaces that produce this compost, and deodorization is indispensable. ing.
Many proposals have been made for this deodorization method and deodorization apparatus, but the so-called biological deodorization method using microorganisms is desired to spread as an environmentally friendly method.

  As this biological deodorization method, for example, there is a method (hereinafter referred to as “oral method”) for reducing the malodor of excrement itself by incorporating microorganisms into the livestock of livestock. However, in this case, in order to regularly take microorganisms into the body of the livestock itself, it is necessary to mix the microorganisms in the livestock feed without excess or deficiency, and the effort is enormous. In addition, there is a problem that the microorganisms must be kept alive, and the maintenance costs are large.

As another biological deodorization method, there is a method in which air containing odors is sent through the dispersed soil and allowed to pass through, and deodorization is performed by microorganisms that inhabit the soil during the passage.
FIG. 4 is a schematic view showing an example of a deodorizing apparatus by a biological deodorizing method using this soil. In FIG. 4, the deodorization apparatus 100 deodorizes bad odors generated from the compost brewing chamber 101.

  The compost brewing room 101 contains compost raw material 102 made of livestock excrement, and the compost raw material 102 is fermented to produce compost. In the example of FIG. 4, the odor from the compost brewing chamber 101 is sent to the deodorizing device 100 by the blower pipe 103.

The deodorizing device 100 is formed with a soil layer 104 dispersed in a plane, and the odor sent from the blower pipe 103 is applied to the soil layer 104 by the blower 107 provided below the soil layer 104. It is designed to be blown.
The air containing bad odor that has passed through the soil layer 104 is deodorized by microorganisms that live in the soil of the soil layer 104, and the deodorized air is discharged to the outside through the exhaust pipe 105.

In such a deodorizing apparatus 100, it is necessary to spray water to microorganisms that inhabit the soil, but there is also a problem that the soil is tightened by the spraying of water and the air permeability is lowered.
Therefore, in order to maintain the air permeability of the soil layer 104, it is necessary to make the piled-up thickness of the soil relatively thin. On the other hand, in order to increase the amount of deodorization, it is necessary to increase the soil application area. Necessary. For this reason, when using a deodorizing apparatus as shown in FIG. 4, the occupation area becomes large. Accordingly, the watering device 106 for spraying water over the entire soil layer 104 in a large area is also large, and the air blower device 107 for dispersing and ventilating odors is also large, and the power of these devices becomes extremely large. There was an inconvenience.

  On the other hand, a method using rock wool instead of soil has been proposed as a method for maintaining air permeability in a constant state. In this method, rock wool is spread instead of soil, and a deodorizing action is caused by microorganisms that inhabit the rock wool.

  However, since the rock wool itself has relatively low air permeability, a blower that disperses and smells the odor with respect to the rock wool is required, but its downsizing is not sufficient. Also in this method using rock wool, there is a problem that it is necessary to provide a watering device, which makes it difficult to increase the size of the entire device, and increases the running cost.

  Thus, in the conventional deodorization method and apparatus, in order to deodorize a large amount of gas generated with compost production, etc., a deodorization apparatus that is as large as a compost production site is required, and the installation location is ensured. The expenses are enormous. Especially for small and medium livestock farmers, the cost for deodorization is a considerable burden.

On the other hand, various researches and developments have been made on deodorization by microorganisms, and as one of them, a deodorization method using lactic acid bacteria and yeast has been proposed (see Patent Document 1). The deodorizing method described in Patent Document 1 includes an oral method of mixing in the feed for livestock as described above, or a method of spraying the odor source.
However, a large amount of microorganisms is required to spread the microorganisms on the odor source. Moreover, in order to deodorize by an oral method, the above-mentioned another difficult problem that a microorganism must be prepared without excess or deficiency in the livestock feed as described above.
Moreover, in the conventional deodorizing method using microorganisms, microorganisms are reduced in accordance with the amount of deodorization. Therefore, when a long-term continuous operation is performed, there is a problem that the deodorizing effect is remarkably lowered.
Japanese Patent Application Laid-Open No. 11-104222.

  The present invention has been made in order to solve the above-described various problems, and is an apparatus having a simple structure in which the installation area of the entire apparatus is reduced, and can continuously maintain good deodorization over a long period of time. An object of the present invention is to provide a deodorizing method and a device that can be used.

  The deodorizing method according to the present invention includes a deodorizing step of deodorizing the odor by sending a gas containing odor into a microorganism culture solution prepared to a required concentration and bubbling the gas, and a deodorizing action of the microorganism in the deodorizing step. A microorganism culturing step of supplying an energy source to a microorganism culture solution in which microorganisms have been reduced to culture and proliferate microorganisms in the microorganism culture solution, and a circulation step of circulating the microorganism culture solution restored to the required concentration by this culture growth; The odor-containing gas is always deodorized using a microorganism culture solution that has been restored to a required concentration by culturing and growing microorganisms.

  As a preferred embodiment of the present invention, the microorganism culture solution used in the above deodorization method is a lactic acid aqueous solution in which lactic acid bacteria are prepared at a required concentration suitable for deodorization of gas containing odor, and the odor to be deodorized is amine. It is characterized by a system odor. Further, as a more preferable form, after deodorizing the amine odor by the lactic acid bacteria culture solution, odors other than the amine odor are deodorized.

  As a preferable form of the deodorizing method of the present invention, the energy source is rice bran and / or rice broth. In addition, a plurality of microorganism culture layers are provided, and an energy source such as rice bran or rice broth is supplied to an arbitrary number of the culture tanks.

  Further, the deodorizing apparatus of the present invention includes a deodorizing tank in which a microorganism culture solution prepared to a required concentration to which a gas containing odor is supplied, a culture tank for culturing and growing microorganisms in the microorganism culture solution, A microorganism culture solution that is provided with an energy source supply device that supplies an energy source for growing microorganisms to the microorganism culture solution in the culture tank, and a circulation coupling device that connects the culture tank and the deodorization tank, and is cultured and proliferated in the culture tank Is recirculated to the deodorizing tank through the circulation connecting device.

  According to the present invention, the malodorous substance is satisfactorily decomposed because the malodorous substance is satisfactorily brought into contact with the microorganism culture liquid by feeding and bubbling odorous gas into the microorganism culture liquid. Although the microorganisms in the microorganism culture solution are reduced by this deodorizing action, since the reduced microorganisms are grown in the next microorganism culture step, the amount of microorganisms can be restored to a state close to the initial amount. Then, by returning the recovered microorganism culture solution to the deodorization step again, it is possible to always perform a deodorization reaction with a required microorganism concentration suitable for deodorization.

According to the deodorizing method of the present invention, it is possible to sufficiently bring the culture solution into contact with the gas by bubbling the deodorizing gas in the microorganism culture solution. And, in the method of the present invention, deodorization is possible only by bubbling odorous gas in the microorganism culture solution, so that it is less than when aerated in a solid such as a soil layer or rock wool. An efficient deodorizing effect can be obtained with electric power.
Furthermore, since the microorganisms in the microorganism culture solution reduced by the deodorizing action are recovered in the microorganism culturing process and refluxed to the deodorizing process, the deodorization can be performed continuously and constantly.

  In addition, the deodorizing apparatus of the present invention is realized with a relatively simple configuration including a deodorizing layer, a culture layer, an energy supply source, and a circulation coupling device, and thus is smaller than the conventional deodorizing apparatus, Costs and maintenance costs required for the production can be kept at a very low cost.

  In addition, the malodorous component generated from the excrement of livestock such as poultry, cattle and pigs is mostly amine amine ammonia (80% to 90%). As a result, it is possible to effectively deodorize amine-based ammonia.

  Furthermore, in a preferred embodiment of the present invention, the gas after the malodor is deodorized by the aqueous lactic acid solution is sent to a microorganism culture solution having an effective deodorizing effect on, for example, a sulfide-based odor, thereby achieving a more complete deodorization. Can be done. In this case, after the amine-based deodorization is performed, the sulfide-based odor is further deodorized. Therefore, the microorganisms used for this deodorization can be selected relatively freely.

Embodiments of a deodorizing method and a deodorizing apparatus according to the present invention will be described below with reference to the drawings.
First, an embodiment of the deodorizing method of the present invention will be described.
FIG. 1 is a schematic view for explaining an embodiment of the deodorizing method of the present invention.
As shown in FIG. 1, the deodorizing method of this example includes the following three steps S1 to S3. That is, (S1) a step of deodorizing by bubbling a gas containing odor in the microorganism culture solution, (S2) a step of restoring the function by growing microorganisms in the microorganism culture solution that has finished the function of deodorization, (S3 ) Returning the microorganism culture solution whose function has been restored to the deodorization step.

  In the deodorization method of this example, the gas containing the odor that needs to be deodorized is prepared at a required concentration suitable for deodorization from the odor source 1 such as a compost brewing room by livestock excrement or household garbage. Supplied in the microbial broth. As this microorganism culture solution, for example, a lactic acid aqueous solution is used. Then, a gas containing odor is bubbled in the aqueous lactic acid solution, and the lactic acid and a gaseous substance containing odor (for example, ammonia) are chemically bonded to perform deodorization. This is the action of the deodorizing step S1 with the microorganism culture solution (lactic acid aqueous solution).

  The gas deodorized in the deodorizing step S1 is discharged to the outside or sent to an auxiliary deodorizing step for removing the odor that was not deodorized in the previous stage. It is sent to step S2. In the microorganism culturing step S2, an energy source such as rice bran or rice broth is supplied from an external energy source supply device. Then, microorganisms (here, lactic acid) in the microorganism culture medium are propagated by the energy source supplied from the outside, and thereby the function of the microorganism culture liquid is restored to its original state.

This will be explained using an example of a lactic acid aqueous solution. The pH of the aqueous solution is increased by a neutralization reaction between amine-based odor ammonia and lactic acid. Rice bran, rice broth, or the like serving as an energy source for so-called medium for culturing and growing microorganisms is supplied to the aqueous lactic acid solution having a high pH.
Then, the lactic acid aqueous solution obtained by restoring the lactic acid aqueous solution to a required pH (herein referred to as lactic acid concentration) is returned to the deodorization step (S1). This process is the circulation process S3. In this manner, by sequentially repeating deodorization (S1) → culture recovery (S2) → circulation (S3) → deodorization (S1) → culture recovery (S2) → circulation (S3) →. Deodorizing action can be maintained permanently (semi-permanently) simply by supplying.

  Usually, the malodorous component emitted from excrement such as livestock is about 90% of amine-based ammonia and occupies most of it. As other components, the organic acid is about 5% and the sulfur compound is about 5%. Therefore, most of the odor is removed by neutralizing this ammonia with, for example, lactic acid. Furthermore, almost complete deodorization is achieved by deodorizing the odor of the organic acid.

Here, the concentration (pH) suitable for deodorization of the lactic acid aqueous solution is about pH 4. Since the pH of the lactic acid aqueous solution after the deodorizing action increases, the deodorizing effect decreases if the lactic acid aqueous solution is left as it is.
Therefore, in the deodorization method of this example, an energy source of lactic acid bacteria such as rice bran and rice broth is supplied to the lactic acid aqueous solution having an increased pH in the culturing step (S2) to cause lactic acid fermentation to grow and grow the lactic acid bacteria. is doing. This restores the lactic acid concentration of the aqueous lactic acid solution. Then, the recovered aqueous lactic acid solution is refluxed for use in the deodorizing step. For this reason, since a lactic acid aqueous solution having a concentration suitable for deodorization is always supplied to the deodorization step, deodorization can be performed continuously and permanently.

Next, an embodiment of the deodorizing apparatus of the present invention will be described with reference to FIG. This deodorizing apparatus 10 is an apparatus for carrying out the deodorizing method of the present invention.
The deodorization apparatus 10 includes at least a deodorization tank 11 in which a microorganism culture solution for deodorization is accommodated, a culture tank 12 for culturing and growing microorganisms in the microorganism culture liquid, and a circulation connecting pipe 15 that connects the culture tank 12 and the deodorization tank 11. It consists of and.

  The deodorization tank 11 contains a microorganism culture solution 2 prepared at a required concentration suitable for decomposing odors that require deodorization. As the microorganism culture solution 2, for example, a lactic acid aqueous solution that is lactic acid fermented by lactic acid bacteria is used. Air containing odor is forcibly fed from the odor source 1 into the microorganism culture solution 2 in the deodorizing tank 11, and a large number of air bubbles containing odor are generated in the deodorizing tank 11 by bubbling. The bubbles containing odor cause a chemical reaction (neutralization reaction) with lactic acid, and deodorization is performed.

  As shown in FIG. 2, a plurality of culture tanks 12 for cultivating and proliferating microorganisms can be connected in a subordinate manner. In FIG. 2, first to fourth culture tanks 12 </ b> A to 12 </ b> D are provided, and these are sequentially connected by a connection pipe 13. The deodorizing tank 11 is connected to the first culture tank 12A by a connecting pipe 14 provided near the liquid surface.

  Further, in the deodorization tank 11, the deodorized gas is released to the outside or, as illustrated by a two-dot chain line in FIG. 2, for example, is supplied to the auxiliary deodorization device 20 that performs deodorization of odor with a sulfur compound. Is done. For this reason, the deodorization exhaust pipe 24 is arrange | positioned so that it may couple | bond with airtight with respect to the opening above the deodorizing tank 11. FIG.

Further, the culture tank 12D and the deodorization tank 11 in the final stage (fourth stage in FIG. 2) are connected by, for example, a circulation connection device 15 using a circulation connection pipe 51, and in an appropriate place of the circulation connection pipe 51, A pump 25 for feeding the aqueous lactic acid solution into the deodorizing tank 11 is arranged.
This pump 25 is a pump that performs water supply control in order to keep the water level of the deodorizing tank 11 constant. The liquid level in the deodorizing tank 11 is measured by a liquid level measuring device (not shown), and the pump 25 is driven and controlled so as to keep the liquid level at a constant water level.

  In addition, the deodorizing apparatus 10 of the present example is provided with an energy source supply device 18 that supplies an energy source such as rice bran or rice broth to the culture tank 12. The energy source supplied from the energy source supply device 18 to the culture tank 12 is for culturing and growing lactic acid bacteria in the aqueous lactic acid solution in the culture tank 12 for lactic acid fermentation. As shown in FIG. 2, the energy source supply device 18 can be provided in all of the culture layers 12A to 12D, or only the first-stage culture tank 12A, or other part of the culture tank 12 and It can also be provided.

The deodorizing tank 11 and the culture tank 12 (12A to 12D) are provided with a temperature control device 26 such as an energizing heater for setting the microorganism culture solution to a required temperature.
In addition, the deodorizing tank 11 and the culture tank 12 (12A to 12D) for culturing microorganisms described above can each be configured by a container (such as a poly tank) that can accommodate, for example, 900 [l] (liter).

  Moreover, the deodorizing apparatus 10 of this example is provided with the odor feeding pipe 16 between the deodorizing tank 11 and the compost brewing room odor source 1 by livestock excrement, household garbage, etc. One end of the odor supply pipe 16 is connected to the odor exhaust port of the odor source 1, and the other end is deeply immersed in the microorganism culture solution (lactic acid aqueous solution) in the deodorization tank 11. Further, the odor supply pipe 16 is provided with an odor blower 17 for forcibly sending air containing odor from the odor source 1 to the deodorization tank 11.

Next, operation | movement of the deodorizing apparatus 10 of this embodiment example is demonstrated.
First, at the start of the deodorizing operation, for example, a lactic acid aqueous solution having a pH of about 4 is housed in the deodorizing tank 11 and the culture tank 12 (12A to 12D). This aqueous lactic acid solution having a pH of about 4 is a solution having a lactic acid concentration suitable for deodorizing amine-based ammonia.
Then, the air containing the odor generated from the odor source 1 by operating the odor blower 17 is forcibly blown into the lactic acid aqueous solution 2 in the deodorization tank 11 through the odor supply pipe 16, and the lactic acid aqueous solution 2 in the deodorization tank 11. Bubbling in. Since the bubbles generated by the bubbling move vigorously in the lactic acid aqueous solution 2, the air containing odor comes into sufficient contact with the lactic acid aqueous solution 2 and efficient deodorization is performed. The deodorized gas floats on the surface of the lactic acid aqueous solution and is discharged to the outside through the deodorizing exhaust pipe 24 or is discharged toward the auxiliary deodorizing apparatus 20 that deodorizes other odors that have not been deodorized.

  At this time, the pH of the aqueous lactic acid solution 2 subjected to deodorization changes to a pH value higher than the initial pH 4, for example, due to a neutralization reaction with ammonia. That is, the lactic acid aqueous solution 2 that was acidic before deodorization changes in a neutral or alkaline direction, for example, to pH 5.5, and the deodorization effect is reduced. For this reason, in this example, in the culture tank 12, an energy source such as rice bran is supplied from the energy source supply device 18, and lactic acid bacteria are grown to promote lactic acid fermentation to increase the lactic acid concentration. In this way, the pH value of the lactic acid aqueous solution 2 in the final stage culture tank 12D is returned to a pH value suitable for deodorization in the deodorization tank 11 (for example, pH 4).

  In addition, in the deodorizing tank 11 shown by FIG. 2, since the gas containing the odor from the odor source 1 is introduced, the overflow by the volume increase arises. And the lactic acid aqueous solution which finished the function after a deodorization flows in into the culture tank 12A of the first stage from this deodorizing tank 11 by this overflow.

Next, culture of lactic acid bacteria will be described. Lactic acid bacteria are cultured, for example, at 25 ° C. to 35 ° C. by supplying 1 to 2% by weight of rice bran or 5% by volume of rice bran juice in an aqueous solution once or twice a week.
In the example of FIG. 2, the lactic acid aqueous solution 2 (for example, pH 5.5) whose lactic acid concentration has been reduced by deodorization is sent to the first stage culture tank 12A, and is connected to the second stage culture tank 12B through the connecting pipe 13. It is sent. The fed lactic acid aqueous solution 2 is sequentially sent to the subsequent culture tanks 12C and 12D.

In this case, lactic acid fermentation of the lactic acid aqueous solution 2 is advanced by supplying an energy source from the energy source supply device 18 after the second stage culture tank 12B. Then, the lactic acid aqueous solution 2 whose deodorizing function has been recovered is returned to the deodorizing tank 11 through the circulation connecting device 15, in this example, the circulation connecting pipe 51, from the final stage culture tank 12 </ b> D. This circulation is performed by driving the pump 25.
In this way, the lactic acid aqueous solution 2 whose lactic acid concentration has been recovered to pH 4 is supplied to the deodorization tank 11 under the control of the pump 25, and this deodorization, culture (recovery), deodorization... Circulation cycle is formed.
Thus, according to the structure of this example, since the lactic acid aqueous solution with the pH concentration required for deodorization is always supplied to the deodorization tank 11, a continuous and permanent deodorization operation is performed.

  Next, the above-described operation will be described in detail based on more specific numerical values. That is, in the deodorizing method and deodorizing apparatus according to this example, the lactic acid fermentation in the culture tank 12 is configured so that 2 g of lactic acid fermentation can be performed with 1 [l] at 30 ° C., for example. Therefore, if 900 [l] aqueous lactic acid solution is used in one culture tank per day, 1800 g of lactic acid fermentation can be performed per day. This means that since the molecular weight of lactic acid bacteria is 90, about 20 mol (1800/90) of lactic acid aqueous solution can be obtained. Therefore, if lactic acid bacteria culture is performed in the four-stage culture tanks 12A to 12D, an aqueous lactic acid solution that is four times (80 m) of 20 mol is obtained.

  On the other hand, assuming that ammonia odor is treated for 300 [l] for 1 minute, 432,000 [l] is treated per day. Usually, the ammonia concentration generated from compost production is 2000 ppm to 3000 ppm. If the ammonia odor of 3000 ppm (ppm is 1 / 1,000,000) is treated, the amount of ammonia in the 432,000 [l] ammonia odor is 1,296 [l]. Since 1 mol is 22.4 [l], 1,296 [l] is 57.8 mol. Considering this by weight, since the molecular weight of ammonia is 17, 57.8 mol corresponds to 982.6 g. This means that it can be sufficiently deodorized with an 80 mol aqueous lactic acid solution.

The deodorizing apparatus according to the present invention is not limited to the example shown in FIG. 2, and various configurations can be adopted so as to implement the above-described method of the present invention.
For example, as shown in FIG. 3, a deodorizing exhaust pipe 24 for taking out deodorized air from the deodorizing tank 11 and a connecting pipe 14 for sending a microorganism culture solution from the deodorizing tank 11 to the next-stage culture tank 12 have an integrated structure. You can also

Next, another embodiment shown in FIG. 3 will be described. The parts corresponding to those in FIG.
In the example shown in FIG. 3, the end 41 on the deodorizing tank 11 side of the connecting pipe 14 that connects the dehydrating tank 11 and the culture tank 12A is immersed in the microorganism culture solution in the deodorizing tank 11, and the culture tank 12A side. The end portion 42 is arranged so as to be immersed in the culture tank 12A. In this case, the end 41 of the connecting pipe 14 that opens into the deodorizing tank 11 is disposed so as to open in the vicinity of the open end of the odor feeding pipe 16. In this way, bubbles generated by bubbling due to the odor sent out from the odor feeding pipe 16 into the microorganism culture solution 2 are efficiently taken into the connecting pipe 14.
And the connection part 14a of the deodorizing tank 11 of the connection pipe 14 and the culture tank 12 is made so that one part may be located above a liquid level, and in this connection part 14a, the microorganisms culture solution 2 is below a part. It arrange | positions so that the liquid level 2a may be located and the space 34 may exist on it. And the deodorizing exhaust pipe 24 is connected with the space 34 of this connection part 14a.

  According to this configuration, bubbles generated by the supply of odor from the odor supply pipe 16 are sent from the end 41 to the connection pipe 14 and deodorized in the process of rising in the microorganism culture solution 2 in the pipe 14. Is made. When the air bubbles that have risen reach the liquid level 2a, they diffuse into the space 34, and the deodorized odor is diffused to the outside air through the exhaust pipe 24 or is sent to the auxiliary deodorizing device 20 at the next stage. It is.

  In the deodorization method shown in this example, the gas to be deodorized is bubbled in the microorganism culture solution, so that the gas and the aqueous solution are in good contact and the deodorizing action is efficiently performed. Thus, in the deodorization method of this example, since only the gas that needs to be deodorized is bubbled into the microorganism culture solution, compared with the case where the gas is aerated in the soil layer or a solid such as rock wool. Thus, handling becomes easy and the structure of the entire apparatus can be simplified.

  In addition, since the bubbling shown in this example does not require any particularly powerful power, the power source can be configured to be smaller and less expensive than the conventional deodorizing device. Since the pump 25 is necessary only for slowly circulating the microorganism culture solution, an inexpensive pump is sufficient because it does not require a particularly large power.

As described above, according to the deodorizing method and the deodorizing apparatus of the present invention, there is an advantage that not only the deodorizing effect is high, but also the running cost can be extremely reduced.
Therefore, the deodorizing apparatus of this example is suitable not only for installation in large-scale livestock farms but also for installation in medium- and small-scale livestock farms.

  The embodiments of the present invention have been described in detail with reference to the drawings. However, the present invention is not limited to the above-described embodiments, and does not depart from the gist of the present invention described in the claims. Needless to say, the invention includes various embodiments.

It is a conceptual diagram of the embodiment of the deodorizing method by this invention. It is a block diagram of one embodiment of the deodorizing method according to the present invention and the deodorizing apparatus according to the present invention. It is a block diagram of other embodiment of the deodorizing method by this invention and the deodorizing apparatus by this invention. It is a block diagram of the conventional deodorizing apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Odor source, 2 ... Microorganism culture solution (lactic acid aqueous solution), 2a ... Liquid level, 10 ... Deodorization apparatus, 11 ... Deodorization tank, 12 ... Culture tank, 13 ... Connection pipe, 14 ... Connecting pipe, 14a .. Connecting part, 15 ... Circulation connecting device, 16 ... Odor feeding pipe, 17 ... Odor blower, 18 ... Energy source supply device, 20 ... Auxiliary deodorizing device, 24 ... Deodorizing exhaust. Pipe, 25 ... Pump, 26 ... Temperature control device, 30 ... Connection and exhaust pipe, 34 ... Space, 41,42 ... End, 51 ... Circulation connection pipe, 100 ... Deodorization device, 101 ... ... Compost brewing room, 102 ... Compost raw material, 103 ... Blower pipe, 104 ... Soil layer

Claims (6)

A deodorizing step of deodorizing the odor by sending a gas containing an odor into a microorganism culture solution prepared to a required concentration, and bubbling the gas containing the odor;
Supplying a source of energy to a microorganism culture solution in which the microorganisms have been reduced by the deodorizing action, and culturing and growing microorganisms in the microorganism culture solution; and
A circulation step of circulating the microorganism culture solution restored to the required concentration by the culture growth,
A deodorizing method characterized in that the odor-containing gas is deodorized in the deodorizing step using the microorganism culture solution restored to the required concentration.   The microbial culture solution is a lactic acid aqueous solution in which lactic acid bacteria are prepared at a required concentration suitable for deodorization of the gas containing the odor, and the odor is an amine odor. Deodorization method.   The deodorization method according to claim 2, further comprising deodorizing odors other than the amine odor after deodorizing the amine odor with the lactic acid bacteria culture solution.   The deodorizing apparatus according to claim 2 or 3, wherein the energy source is rice bran and / or rice broth. A deodorizing tank in which a microorganism culture solution prepared to a required concentration is stored and a gas containing odor is supplied;
A culture vessel for culturing and growing microorganisms in the microorganism culture solution;
An energy source supply device for supplying an energy source for growing the microorganism to the microorganism culture solution in the culture tank;
A circulation connection device for connecting the culture tank and the deodorization tank;
The deodorizing apparatus, wherein the microorganism culture solution grown and grown in the culture tank is refluxed to the deodorizing tank through the circulation coupling device.   The deodorizing apparatus according to claim 5, wherein a plurality of the culture tanks are installed, and the energy source is supplied to any one or a plurality of culture tanks.

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