JP6096430B2 - Deodorization device - Google Patents

Description

  The present invention relates to a deodorizing apparatus that deodorizes malodorous gas generated from a composting apparatus, and more particularly to a biological deodorizing apparatus that performs deodorization using microorganisms.

  When the malodorous gas mainly composed of ammonia generated from a composting apparatus or the like is deodorized by a biological deodorizing apparatus, it is necessary to maintain a deodorizing material serving as a microorganism carrier in a wet state. For this reason, a watering device and a water tank are installed, and water is sprinkled from the surface of a deodorizing tank (a tank filled with a carrier on which microorganisms are grown) about twice a day, and excess water is collected in the water tank. .

  Such a configuration is disclosed in, for example, the biological deodorization system of Patent Document 1. The biological deodorization system of Patent Document 1 includes a biological deodorization device that deodorizes ammonia by converting it into nitric acid and / or nitrous acid by a microorganism having a nitrification action, and a microorganism having a denitrification action that is provided separately from the biological deodorization apparatus. A denitrification device that converts nitric acid and / or nitrous acid into nitrogen, an organic material supply device that supplies organic matter as nutrients for microorganisms having a denitrification action, and a nutrient that is supplied from the organic material supply device to the denitrification device It consists of a control device for adjusting the amount.

  Here, in the deodorizing apparatus, a carrier holding portion filled with a packed carrier carrying microorganisms and a gas introduction chamber are arranged immediately below the carrier holding portion. A watering chamber is provided in the upper region of the carrier holding portion, and an exhaust duct is connected to the inside of the watering chamber. From the exhaust duct, the deodorized gas is released to the outside.

  That is, the biological deodorization device and the denitrification device are provided separately, and the malodorous gas to be decomposed is supplied from the lower side of the carrier holding portion where microorganisms are present, and is discharged from the exhaust duct above the single holding portion. On the other hand, the watering performed on the microorganisms in the carrier holding unit is performed from above the carrier holding unit.

JP 2006-35028 A

  In this way, the biological deodorization device and the denitrification device are provided separately, and there is no relationship in which one device keeps the other device warm, and the biological deodorization tank is a so-called ammonia oxidizing bacterium, nitrite oxidizing bacterium or the like. Although it is a nitrification reaction by nitrifying bacteria, that is, an oxidation reaction or an exothermic reaction, the reaction heat is not effectively used.

  Therefore, there has been a problem that nitrification denitrification is not performed efficiently and the apparatus cannot be downsized. In addition, the biological deodorization apparatus and the denitrification apparatus are provided separately, which is difficult to handle for truck transportation, and there is a problem that it is not possible to provide an easy-to-use malodorous gas deodorization apparatus.

  The present invention has been conceived in view of the above-mentioned problems. One apparatus keeps the other apparatus warm, aims to effectively use reaction heat during the nitrification reaction, efficiently performs nitrification denitrification, and reduces the size of the apparatus. Provided is a deodorizing device characterized in that In addition, by providing an outer cylinder around the inner cylinder, the nitrification apparatus and the denitrification apparatus can be integrated and downsized, a truck transport is possible, and an odor gas deodorization apparatus that is easy to use is provided.

More specifically, the deodorizing apparatus of the invention according to claim 1 of the present application is
An inner cylinder,
An outer cylinder provided around the inner cylinder and communicated with the inner cylinder at a lower end;
A microorganism-supporting material appropriately disposed in the inner cylinder;
A carbon source filled in an outer space between the outer cylinder and the inner cylinder;
One sprinkler tank provided below the inner cylinder and the outer cylinder;
Watering means for circulating water from the water receiving tank to the microorganism-supporting material and the carbon source;
A blowing means for blowing malodorous gas to the inner cylinder from the watering means side;
The malodorous gas passes through the inner cylinder in a downward flow by the blowing means, is sent from the lower end of the inner cylinder to the outer space, passes through the outer space in an upward flow, and is then discharged from the outer space.
Perform nitrification of the ammonia gas as the malodorous gas in the inner cylinder of the aerobic condition, have the row denitrification outside space of anaerobic conditions,
The water in the one sprinkle receiving tank is neutralized by the sprinkles that have passed through the inner cylinder and the outer cylinder .

  Thereby, the inner cylinder is hardly affected by the outside air and is easily insulated from the outside air, and the inner cylinder is kept warm. The ammonia oxidation reaction by the ammonia oxidizing bacteria in the aerobic state in the inner cylinder is an exothermic reaction.

  In addition, the rate-determining rate of the nitrification denitrification reaction is the ammonia oxidation reaction by ammonia-oxidizing bacteria. The ammonia-oxidizing bacteria are generated by using the reaction heat that is generated by causing the ammonia oxidation reaction in the heat-retained inner cylinder where the reaction heat does not easily escape to the outside air. To warm up the ammonia-oxidizing bacteria.

  The efficiency of the nitrification denitrification reaction is improved by accelerating the ammonia oxidation reaction by the ammonia-oxidizing bacteria, which is the rate limiting nitrification denitrification reaction. The optimum temperature of the ammonia oxidizing bacteria is about 30 ° C., which leads to an improvement in the efficiency of the nitrification / denitrification reaction particularly in winter or in a cold region.

  In addition, the reaction heat generated by the nitrification reaction of ammonia oxidation and nitrite oxidation is supplied to the denitrifying bacteria in the outer cylinder by blowing air, and the denitrifying bacteria in the outer cylinder can be warmed through the wall surface of the inner cylinder. Is activated by heating, leading to effective utilization of heat of nitrification reaction and improvement of efficiency of nitrification denitrification reaction.

  In particular, when the inner cylinder and the outer cylinder are vertically long, the area of the wall that separates the inner cylinder and the outer cylinder increases, and therefore the area of transition of reaction heat in the inner cylinder to the outer cylinder is large, and denitrifying bacteria in the outer cylinder As a result, the heat of nitrification reaction is effectively utilized, contributing to an improvement in the speed of the nitrification denitrification reaction and an improvement in the efficiency of the nitrification denitrification reaction.

  Further, by providing the outer cylinder around the inner cylinder, the nitrification apparatus and the denitrification apparatus can be integrated, and truck transportation is possible, and an easy-to-use deodorizing apparatus for malodorous gas is provided. If the device is particularly long, trucking is possible even with a large processing capacity.

Moreover, the deodorizing apparatus of the invention according to claim 2 of the present application is
An inner cylinder,
An outer cylinder provided around the inner cylinder and communicated with the inner cylinder at a lower end;
A microorganism-supporting material appropriately disposed in an outer space between the outer cylinder and the inner cylinder;
A carbon source allocated to the inner cylinder;
One sprinkler tank provided below the inner cylinder and the outer cylinder;
Watering means for circulating water from the water receiving tank to the microorganism-supporting material and the carbon source;
A blowing means for blowing malodorous gas from the watering means side to the outer space,
The malodorous gas passes through the outer space in a downward flow by the blowing means, is sent from the lower end of the outer space to the inner cylinder, passes through the inner cylinder in an upward flow, and is then discharged from the inner cylinder.
Perform nitrification of the ammonia gas as the malodorous gas in the outer space of the aerobic condition, it has rows denitrification within the inner cylindrical anaerobic conditions,
The water in the one sprinkle receiving tank is neutralized by the sprinkles that have passed through the inner cylinder and the outer cylinder .

In addition, the above deodorizing device
The malodorous gas is ammonia gas, the microorganism supporting material is rock wool, and the carbon source is a husk chip.

  In addition, the deodorizing apparatus further includes microbubble generating means for mixing fine bubbles including microbubbles in the water sprayed by the watering means.

  In addition, the deodorizing device further includes a normal bubble generating device that mixes normal bubbles into the water to be sprinkled.

  Moreover, the watering means of the deodorizing apparatus is a drip method.

In the deodorizing apparatus of the present invention, by providing an outer cylinder around the inner cylinder, the outer cylinder is less susceptible to the influence of outside air and is easily insulated from the outside air, the inner cylinder is kept warm, and effective use of reaction heat during the nitrification reaction is achieved. Therefore, it is possible to provide a deodorizing apparatus for malodorous gas in which nitrification and denitrification is efficiently performed and the apparatus is downsized. Also, by providing an outer cylinder around the inner cylinder, the nitrification device and the denitrification device can be integrated and compact, and can be transported by truck. . Moreover, the pH of the water in the sprinkler tank is useful for detecting the balance between the nitrifying bacteria and the denitrifying bacteria in the deodorizing apparatus. According to the second aspect of the present invention, the denitrifying bacteria are activated by heating the inner space by the heat of nitrification reaction in the outer space, and the effective use of the heat of nitrification reaction and the efficiency of the nitrification denitrification reaction are improved. It leads to.

  Furthermore, since the water supplied to the nitrification unit and the denitrification unit is supplied in a drip form, the above-described problems do not occur even if the malodorous gas and water are continuously supplied.

  Further, since nitrification and denitrification are performed in a concentric container, the deodorizing apparatus can be miniaturized.

The figure which shows the structure of the deodorizing apparatus of this invention. The figure which shows the structure at the time of dividing a watering receiving tank into 2 minutes. FIG. 6 illustrates an example of a structure in Embodiment 2. The figure which shows the structure at the time of dividing a watering tank into the form of FIG.

  Hereinafter, the deodorizing apparatus of the present invention will be described with reference to the drawings. In addition, the following description shows an example of this invention and can be changed within the range of the meaning of this invention.

(Embodiment 1)
FIG. 1 shows the configuration of the deodorizing apparatus of the present invention. The deodorizing apparatus 1 of the present invention includes at least an inner cylinder 10, an outer cylinder 11, a watering means 12, a blower means 13, and a watering receiving tank 14. Further, a buffer tank 15 may be further provided.

  The outer cylinder 11 has a cylindrical structure with a substantially circular cross section. The cross-sectional shape of the outer cylinder 11 is not particularly limited to a circle, and may be an ellipse or a polygon such as a triangle, a quadrangle, a hexagon, or an octagon. Further, a sprinkler receiving tank 14 is provided at the lower end of the outer cylinder 11. The outer cylinder 11 and the water spray receiving tank 14 may be formed continuously or may be connected to each other.

  An inner cylinder 10 having a smaller cross-sectional diameter than the outer cylinder 11 is disposed inside the outer cylinder 11. Therefore, a space is formed between the inner cylinder 10 and the outer cylinder 11. An internal space surrounded by the inner cylinder 10 is called an inner space 20, and a space between the inner cylinder 10 and the outer cylinder 11 is called an outer space 21. A common space is formed below the lower ends of the inner cylinder 10 and the outer cylinder 11, and a sprinkler tank 14 is provided further below. This common space is called a communication space 22 because it communicates the inner space 20 and the outer space 21. That is, the inner cylinder 10 and the outer cylinder 11 communicate with each other through the communication space 22 at the lower end.

  The inner space 20 is filled with a microorganism supporting material 30 supporting nitrifying bacteria. The nitrifying bacteria include at least ammonia oxidizing bacteria that oxidize ammonia to nitrite ions and nitrite oxidizing bacteria that oxidize nitrite ions. As the microorganism-supporting material 30, rock wool or the like is preferably used.

  The outer space 21 is filled with a carbon source 31 on which denitrifying bacteria are propagated and supported. Denitrifying bacteria purify nitrite ions and nitrate ions into nitrogen and water by a denitrification reaction.

  A sprinkler tank 14 is formed below the communication space 22. The water sprinkle receiving tank 14 is a tank that receives water sprinkled from above the inner cylinder 10 and the outer cylinder 11 at the lower side. Further, in order to maintain the communication space 22 in an airtight manner, the outer space 11 is connected in an airtight manner.

  A lid 16 is provided at the upper ends of the inner cylinder 10 and the outer cylinder 11. The lid portion 16 is provided with an intake port 16in for malodorous gas G, which is a gas to be processed, and an exhaust port 16ot for nitrogen gas generated as a result of processing. The lid 16 is provided with a separating means 24 for separating the inner space 20 and the outer space 21 in an airtight state.

  The separating means 24 can be configured by standing a rib similar to the outer diameter of the inner cylinder 10 on the inner side of the lid portion 16 and abutting the tip of the rib with the tip of the inner cylinder 10. Alternatively, the inner space 20 and the outer space 21 may be airtightly separated by extending the tip of the inner cylinder 10 to the inner surface of the lid portion 16. This is because the bad-odor gas G intake 16in and the treated nitrogen gas discharge 16ot are hermetically separated.

  The sprinkler 14 is provided with liquid-tight discharge ports (14a, 14b). A pipe 40 a is connected to the discharge port 14 a and extends to the inside of the lid portion 16. A water spout 41 a is provided in the pipe 40 a inside the lid portion 16. A pump Pa is disposed in the middle of the pipe 40 a, and the liquid in the sprinkler tank 14 can be sprinkled from a sprinkling port 41 a disposed at the upper part of the inner cylinder 10 and the outer cylinder 11. A microbubble generator 46 and a normal bubble generator 47 are connected in the middle of the pipe 40a. The watering means 12 is constituted by at least the watering receiving tank 14, the pipe 40a, and the pump Pa.

  Moreover, there may be a plurality of discharge ports (14a, 14b), piping 40, pump Pa, and water spray port 41a. In FIG. 1, the structure which has the discharge port 14b, the pump Pb, and the water spray port 41b is shown. These feed circulating water to the carbon source 31 in the outer space 21. Thus, by arranging the water sprinkling means 12 to the inner space 20 and the outer space 21, the amount of circulating water supplied to the microorganism-supporting material 30 and the carbon source 31 can be adjusted separately.

  It is desirable that a pH sensor 48 is further disposed in the sprinkler receiving tank 14. This is because, as will be described later, the pH of the water in the sprinkler tank 14 is useful for detecting the balance between the nitrifying and denitrifying treatment capacities of the deodorizing apparatus 1.

  Further, a pH control agent charging means 50 may be provided. The pH control agent charging means 50 is means for supplying an acidic or alkaline solution to the inner space 20 or the outer space 21. In the figure, the pH control agent charging means 50 constituted by a container and a valve for holding an acidic or alkaline solution is shown in the middle of the pipes 40a and 40b constituting the water sprinkling means 12, but is not limited to this configuration. .

  A blower 17 for sending the malodorous gas G from the malodorous source is connected to the intake 16in of the malodorous gas G of the lid portion 16. The blower 17 constitutes the air blowing means 13. In FIG. 1, the blower 17 is configured outside the lid portion 16, but may be provided in the lid portion 16.

  Further, a buffer tank 15 may be provided upstream of the blower 17. The buffer tank 15 is a tank in which water is stored, and once the malodorous gas G is passed through the internal water, the ammonia in the malodorous gas G is dissolved and the malodorous gas G is leveled. The deodorizing apparatus 1 of the present invention purifies the malodorous gas G using microorganisms. Therefore, it is efficient to continue the reaction of microorganisms continuously. By passing through the buffer tank 15, when the amount of ammonia in the malodorous gas G is large, it is absorbed by the stored water in the buffer tank 15, and when it is small, it is supplied from the stored water. In this way, odor sources such as ammonia in the odor gas G can be leveled. Of course, the malodorous gas G may be sent directly to the deodorizing apparatus 1 without passing through the buffer tank 15.

  Operation | movement of the deodorizing apparatus 1 which has the above structure is demonstrated. The malodorous gas G mainly composed of ammonia generated from a composting apparatus or the like (not shown) by the blowing means 13 flows into the inner space 20 in the inner cylinder 10 directly or after passing through the buffer tank 15. In addition, ammonia derived from the malodorous gas G contained in the circulating water pumped from the water sprinkling tank 14 by the pump Pa is also supplied to the inner space 20. Ammonia-oxidizing bacteria, which are a kind of nitrifying bacteria arranged and filled in the inner cylinder 10 and propagated and supported on the microorganism-supporting material 30, oxidize these ammonia and generate nitrite ions. Further, nitrite oxidizing bacteria which are a kind of nitrifying bacteria propagated and supported on the microorganism-supporting material 30 oxidize nitrite ions to generate nitrate ions.

  Due to the generation of nitrite ions and nitrate ions, the moisture of the microorganism-supporting material 30 in the inner space 20 becomes acidic and the pH decreases. However, the circulating watering supplied by the watering means 12 ishes out the nitrite ions and nitrate ions and drops them into the lower watering tank 14. In addition, ammonia, which is the main component of the malodorous gas G that has flowed into the inner cylinder 10, is dissolved in water supplied to the inner space 20 and becomes ammonia water. This ammonia water also neutralizes nitrite ions and nitrate ions. In this way, the moisture in the microorganism-supporting material 30 filled in the inner space 20 is maintained at neutrality or weak alkali suitable for growth of nitrifying bacteria.

  In the deodorizing apparatus 1 of the present invention, the inner space 20 is insulated from the outside air by the presence of the outer space 21 and is kept warm. Since the nitrification reaction occurring in the inner space 20 is an exothermic reaction, the inner space 20 is heated. A nitrification reaction takes place in the inner space 20 that is insulated and kept warm in the outer space 21, and the heat of nitrification reaction is difficult to escape to the outside air, making it difficult to cool. That is, the ammonia oxidizing bacteria are warmed to improve the activity of the ammonia oxidizing bacteria. That is, the present deodorizing apparatus 1 constituted by the inner cylinder 10 and the outer cylinder 11 improves the processing speed of the nitrification denitrification reaction in view of the fact that the rate-limiting of the nitrification denitrification reaction is an ammonia oxidation reaction by ammonia oxidizing bacteria. be able to. In particular, even in an environment where the outside air temperature is low, such as in winter or in a cold region, the processing speed is improved. The processing speed of the nitrification denitrification reaction is improved, and the apparatus is downsized.

  The circulating water that is dropped and stored in the sprinkler tank 14 contains ammonia components and malodorous gas G components dissolved in the circulating water in addition to the nitrite ions and nitrate ions that are generated and washed away by the oxidation reaction.

  When ammonia is oxidized by the nitrification reaction by nitrifying bacteria, the ammonia component is purified and the ammonia odor is deodorized. That is, the malodorous gas G containing ammonia as a main component is purified.

  When the malodorous gas G mainly composed of ammonia generated from a composting apparatus or the like is oxidized and purified by nitrifying bacteria in the inner cylinder 10, oxygen is consumed from the malodorous gas G together with ammonia. The malodorous gas G in which oxygen has been consumed passes from the lower end of the inner cylinder 10 to the communication space 22 and then flows into the outer space 21. That is, the outer space 21 is supplied with a gas having a low oxygen content and is in an anaerobic state suitable for the denitrification reaction. When the circulating water in the sprinkler tank 14 is sprinkled on the carbon source 31 filled in the outer space 21 in such a state, nitrite ions and nitrates in which the denitrifying bacteria propagated and supported on the carbon source 31 are washed away in the circulating water. A denitrification reaction is performed using ions to generate nitrogen gas, water, and hydroxyl groups. Nitrogen gas is discharged out of the deodorizing apparatus 1 from the outer cylinder 11 as purified gas.

  Further, the processed gas flowing into the outer space 21 is warmed by the nitrification reaction. Therefore, the carbon source 31 filled in the outer space 21 is also warmed, and activation of the denitrifying bacteria by heating is promoted. In addition, the heating to the outer space 21 is also caused by heat conduction through the outer wall surface of the inner cylinder 10 due to an exothermic reaction generated in the inner space 20.

  The pH rises due to the production of hydroxide ions by the denitrification reaction. However, the circulating water supplied by the water sprinkling means 12 from the water sprinkling tank 14 ishes away the generated alkali. The alkaline water that has been washed away falls into the sprinkler tank 14 below and is stored. Then, the alkaline water is neutralized with nitrite ions and nitrate ions that are dropped from the inner cylinder 10 and stored, and the circulating water in the sprinkler tank 14 becomes substantially neutral. The water in the carbon source 31 that is applied to the outer space 21 and carries microorganisms is maintained at a neutral or weak alkali suitable for the growth of denitrifying bacteria that are propagated and supported on the carbon source 31.

  An imbalance between the nitrification reaction and the denitrification reaction may occur, and if the pH is excessively lowered or the pH is excessively increased, the nitrification reaction or the denitrification reaction may be adversely affected. Therefore, the pH of the circulating water stored in the water sprinkling tank 14 is detected by the pH sensor 48, and the pH control agent charging means 50 is used to enter the inner space 20 where the nitrifying reaction is caused by nitrifying bacteria, or to remove it. Acid or alkali may be supplied into the outer space 21 where the denitrification reaction is caused by nitrifying bacteria, and the circulating water stored in the sprinkler receiving tank 14 may be controlled to be approximately neutral at about pH 7-8.

  As the acid, it is sufficient that the pH of the circulating water can be substantially neutralized to about 7 to 8. For example, dilute hydrochloric acid or the like can be used, and phosphoric acid or the like can also be suitably used as a nutrient for microorganisms. Similarly, the alkali may be neutralized to about 7 to 8 or so. For example, caustic soda or the like can be used, and potassium hydroxide or the like can also be suitably used as a nutrient for microorganisms.

  Nitrite ions and nitrate ions in the circulating water are mainly denitrified and purified by denitrifying bacteria supported on the carbon source 31 in the outer space 21 in an anaerobic state. Some are denitrified and purified in the anaerobic part in the inner space 20, but most are washed away in the inner space 20.

  Further, the ammonia component and the malodorous gas G component dissolved in the circulating water are oxidized and purified mainly by nitrifying bacteria supported on the microorganism supporting material 30 in the inner space 20 in an aerobic state. Some are aerobically oxidized and purified in the outer space 21 using dissolved oxygen or the like in the circulating water, but most are washed away in the outer space 21 and fall into the sprinkler tank 14 below and stored. The That is, even if the circulating water falling from the inner space 20 and the outer space 21 is stored in one sprinkler receiving tank 14 and supplied from there to the inner space 20 and the outer space 21, nitrite ions and nitrate ions in the circulating water. Then, purification of ammonia component and malodorous gas G component will proceed.

  When the amount of circulating water that is washed away from the microorganism-supporting material 30 in the inner space 20 and the carbon source 31 in the outer space 21 is large, the blowing resistance and the pressure loss of the blower are increased. Watering is performed to wash away nitrite ions, nitrate ions, ammonia components, and malodorous gas G components dissolved in the circulating water contained in the microorganism-supporting material 30 and the carbon source 31 and supply them for purification. Therefore, it is not necessary to be so much. For example, it is sufficient if it drops to the sprinkler tank 14 below after passing through the microorganism-supporting material 30 and the carbon source 31.

  In FIG. 1, the number of sprinkling water sprinkling tanks 14 is one, but the water sprinkling water receiving tank 14 is divided into two parts, from the outer cylindrical sprinkling water receiving tank 14 t that receives the water sprinkled from the outer space 21 and the inner space 20. An inner cylinder water receiving tank 14i that receives the water spray may be provided. In FIG. 2, the structure of the deodorizing apparatus 2 at the time of dividing the watering receiving tank 14 into two by the partition 14d is shown. In addition, the same code | symbol is provided to the same part as FIG.

  Referring to FIG. 2, when the microorganism-supporting material 30 in the inner space 20 is washed away, and the circulating water that has fallen into the inner cylinder sprinkle receiving tank 14 i and sprinkled is stored in the carbon source 31 in the outer space 21, the microorganism-supporting material 30 circulates. Nitrite ions and nitrate ions that have flowed into the water are supplied to the denitrifying bacteria of the carbon source 31 in the outer space 21. And the alkalinization which advances by a denitrification reaction is neutralized, the produced | generated alkali is washed away, and it falls to the outer cylinder sprinkle receiving tank 14t below, and is stored.

  If the circulating water stored in the outer cylinder water receiving tank 14t is sprinkled on the nitrifying bacteria supported on the microorganism-supporting material 30 in the inner space 20, the decrease in pH due to nitrite ions and nitrate ions generated by the nitrifying bacteria is neutralized. be able to. Further, if nitrite ions and nitrate ions generated by nitrifying bacteria are dropped into the inner pipe sprinkle receiving tank 14i below and stored as circulating water, and the stored circulating water is sprinkled into the outer space 21 again, nitrification denitrification is performed. The reaction proceeds efficiently, and it is possible to promote deodorization and purification of odor gas mainly composed of ammonia generated from a composting apparatus or the like.

  Further, microbubbles or normal bubbles may be mixed into the circulating water to be sprinkled by the microbubble generator 46 or the normal bubble generator 47. In particular, since nitrifying bacteria perform a nitrifying reaction in an aerobic atmosphere, microorganisms can be further activated by supplying circulating water containing microbubbles or normal bubbles to the microorganism-supporting material 30 in the inner space 20. . Such a configuration is more effective when the sprinkler tank 14 is divided into two as shown in FIG.

  A more specific configuration is illustrated as the deodorizing apparatus 1 of the present invention. The inner cylinder 10 of the deodorizing apparatus 1 is, for example, a vertically long φ1.9 m × 4 mH, the outer cylinder 11 is a vertically long φ2.3 m × 4 mH, and a communication space 22 and watering provided below the inner cylinder 10 and the outer cylinder 11. If the total height of the receiving tank 14 is 1 mH, the outer dimension of the deodorizing apparatus 1 is a vertically long φ2.3 m × 5 mH. The loadable height of general roads is 3.8mH above the ground, so at this height, the deodorizing device 1 can be integrated and placed on a 10t truck, making it easy to move and improving usability. To do. Here, φ2.3 m indicates that the diameter is 2.3 m, and 5 mH indicates that the height is 5 m.

  Further, the inner cylinder 10 of the deodorizing apparatus 1 is, for example, a vertically long φ2 m × 4 mH, the outer cylinder 11 is a vertically long φ2.4 m × 4 mH, and a communication space 22 and watering provided below the inner cylinder 10 and the outer cylinder 11. If the total height of the receiving tank 14 is 1 mH, the external dimension of the deodorizing device 1 becomes a vertically long φ2.4 m × 5 mH, and the deodorizing device 1 can be integrated and mounted on a 15-t truck. Becomes easier and improves usability.

  Next, a specific operation state is illustrated. For example, the inner cylinder 10 of the deodorizing apparatus 1 is φ2 m × 4 mH, the outer cylinder 11 is φ2.4 m × 4 mH, and the total height of the communication space 22 provided below the inner cylinder 10 and the outer cylinder 11 and the sprinkler receiving tank 14 is high. If the thickness is 1 mH, the outer dimension of the deodorizing apparatus 1 is a vertically long φ2.4 m × 5 mH. Here, the microorganism-supporting material 30 in the inner space 20 is, for example, rock wool.

Rock wool fills the inner space 20 with approximately 1 to 3.3 m ³ . Rock wool breeds and carries ammonia-oxidizing bacteria and nitrite-oxidizing bacteria that are nitrifying bacteria. In addition, the outer space 21 is filled with approximately 0.5 to 1.7 m ³ as the carbon source 31 as a husk chip . The carbon source 31 reproduces and carries denitrifying bacteria. Examples of the carbon source 31 include rice husks in addition to the husk chips .

Sprinkling circulates in the inner space 20 and the outer space 21 to such an extent that the reaction products in the inner space 20 and the outer space 21 are washed away and the circulating water drops into the lower water receiving tank 14. . Circulation water spray amount, if deodorizer the size is substantially 15~30L / ^m about ² day to about approximately approximately 20L / ^{m 2} · day circulation water spray. If it is the deodorizing apparatus 1 of such an operation state, the malodorous gas G of about 3-10 m < ³ > / min can be ventilated and it can purify | clean.

(Embodiment 2)
In FIG. 3, the structure of the deodorizing apparatus 3 which concerns on this Embodiment is shown. The same parts as those in the first embodiment are given the same numbers, and detailed description thereof is omitted. In the present embodiment, the carbon source 31 is disposed in the inner space 20, and the microorganism carrier 30 is filled and disposed in the outer space 21. In other words, in the present embodiment, the malodorous gas G that is the gas to be processed flows from the upper end to the lower end in the outer space 21 and escapes to the communication space 22. Then, the communication space 22 proceeds to the lower end of the inner space 20 and exits from the lower end of the inner space 20 to the upper end.

  Further, since the flow of the malodorous gas G is different, the intake port 16in of the malodorous gas G provided in the lid portion 16 and the exhaust port 16ot of the purified gas are in communication with each other. That is, the intake port 16in communicates with the outer space 21, and the discharge port 16ot communicates with the inner space 20. However, nitrification denitrification and purification are the same as in the first embodiment.

  By having such a configuration, the inner space 20 is hardly affected by the outside air by the outer space 21. That is, the inner space 20 is insulated from the outside air and kept warm.

  The operation | movement which becomes the characteristic about the deodorizing apparatus 3 of this Embodiment is demonstrated. Heat is generated by the nitrification reaction of ammonia oxidation and nitrite oxidation of the nitrifying bacteria supported on the microorganism supporting material 30 filled in the outer space 21. This heat warms the gas containing malodor sent by the blowing means 13. Of course, as in the case of the first embodiment, ammonia and oxygen in the malodorous gas G are consumed and purified by the nitrification reaction.

  The gas having a high temperature and a low oxygen content is sent to the inner space 20 through the communication space 22 and warms the denitrifying bacteria supported on the carbon source 31 in the inner space 20. The heat of the outer space 21 also warms the inner space 20 through the inner surface of the outer space 21 (that is, the outer wall surface of the inner cylinder 10). The warming of the inner space 20 activates the denitrifying bacteria, leading to effective utilization of the heat of nitrification reaction and improvement of the efficiency of the nitrification denitrification reaction.

  In particular, when the inner cylinder 10 and the outer cylinder 11 are vertically long, the area of the wall that separates the inner cylinder 10 and the outer cylinder 11 increases, so that the area of transition of the reaction heat in the outer space 21 to the inner space 20 is large. The denitrifying bacteria in the space 20 are easily heated, and effective use of the nitrification heat is achieved, contributing to an improvement in the speed of the nitrification / denitrification reaction and an improvement in the efficiency of the nitrification / denitrification reaction.

  FIG. 4 shows a configuration of the deodorizing device 4 in the case where a partition 14d is provided in the sprinkler receiving tank 14 and an inner cylinder sprinkler receiving tank 14i and an outer cylinder sprinkler receiving tank 14t are configured. The action when the water sprinkling tank 14 is divided into two is the same as that described in the first embodiment. Therefore, in the present embodiment, the water sprinkling means 12 is formed by two lines of piping and a pump, and sprinkles the circulating water stored in the inner cylinder water receiving tank 14i from the upper end of the outer space 21, and the outer cylinder water receiving tank. The circulating water stored in 14t is sprinkled from the upper end of the inner space 20.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used as a deodorizing device that decomposes malodorous gas emitted from a composting device.

1, 2, 3, 4 Deodorizing device 10 Inner cylinder 11 Outer cylinder
12 Sprinkling means 13 Blowing means 14 Sprinkling receiving tank 14a, b Discharge port 14d Partition 14i Inner cylinder sprinkling receiving tank 14t Outer cylinder sprinkling receiving tank 15 Buffer tank 16 Cover 16in (Odor gas) intake 16ot Discharge port 17 Blower 20 Inside Space 21 Outer space 22 Communication space 24 Separation means 30 Microorganism support material 31 Carbon source 40a, b Piping 41a, b Sprinkling port 46 Micro bubble generation device 47 Normal bubble generation device 48 pH sensor 50 pH control agent input means

Claims (6)

An inner cylinder,
An outer cylinder provided around the inner cylinder and communicated with the inner cylinder at a lower end;
A microorganism-supporting material appropriately disposed in the inner cylinder;
A carbon source filled in an outer space between the outer cylinder and the inner cylinder;
One sprinkler tank provided below the inner cylinder and the outer cylinder;
Watering means for circulating water from the water receiving tank to the microorganism-supporting material and the carbon source;
A blowing means for blowing malodorous gas to the inner cylinder from the watering means side;
The malodorous gas passes through the inner cylinder in a downward flow by the blowing means, is sent from the lower end of the inner cylinder to the outer space, passes through the outer space in an upward flow, and is then discharged from the outer space.
Perform nitrification of the ammonia gas as the malodorous gas in the inner cylinder of the aerobic condition, have the row denitrification outside space of anaerobic conditions,
The deodorizing device for malodorous gas , wherein the water in the one watering tank is neutralized by the watering that has passed through the inner cylinder and the outer cylinder . An inner cylinder,
An outer cylinder provided around the inner cylinder and communicated with the inner cylinder at a lower end;
A microorganism-supporting material appropriately disposed in an outer space between the outer cylinder and the inner cylinder;
A carbon source allocated to the inner cylinder;
One sprinkler tank provided below the inner cylinder and the outer cylinder;
Watering means for circulating water from the water receiving tank to the microorganism-supporting material and the carbon source;
A blowing means for blowing malodorous gas from the watering means side to the outer space,
The malodorous gas passes through the outer space in a downward flow by the blowing means, is sent from the lower end of the outer space to the inner cylinder, passes through the inner cylinder in an upward flow, and is then discharged from the inner cylinder.
Perform nitrification of the ammonia gas as the malodorous gas in the outer space of the aerobic condition, it has rows denitrification within the inner cylindrical anaerobic conditions,
The deodorizing device for malodorous gas , wherein the water in the one watering tank is neutralized by the watering that has passed through the inner cylinder and the outer cylinder .   The deodorizing apparatus for malodorous gas according to claim 1 or 2, wherein the malodorous gas is ammonia gas, the microorganism supporting material is rock wool, and the carbon source is a husk chip.   The deodorizing apparatus for malodorous gas according to any one of claims 1 to 3, further comprising microbubble generating means for mixing fine bubbles containing microbubbles in the water sprayed by the watering means.   The deodorizing apparatus for malodorous gas according to claim 4, further comprising a normal bubble generator for mixing normal bubbles in the water to be sprinkled.   The malodorous gas deodorizing apparatus according to any one of claims 1 to 5, wherein the watering means is a drip method.