JP3065012B2 - Deodorizing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing system, and more particularly to a lime treatment fertilizer for mixing lime and organic matter such as sludge, garbage, food residue, livestock dung, and dehydrating and solidifying to produce lime treatment fertilizer. The present invention relates to a deodorizing system suitable for treating malodorous gas generated from a producing device.

[0002]

2. Description of the Related Art As one of methods for reusing viscous fluids composed of organic substances such as sludge, raw garbage, food residues, livestock dung, etc., quicklime is mixed into these viscous fluids and the viscous fluid is mixed. A method of producing a fertilizer by drying by the heat of reaction between moisture contained in a fluid and quicklime is used. In addition, a lime-treated fertilizer producing device for producing fertilizer based on this fertilizer producing method has been devised.

[0003] This lime treatment fertilizer making apparatus comprises a storage section for organic matter such as sludge, garbage, food residue, or livestock dung, a crushing section for crushing these lumps, and a dehydrator for dehydrating these excess water. A lime treatment tank for mixing dehydrated organic matter and the like and quicklime, and a storage unit for storing lime-treated fertilizer created by the lime treatment tank. .

[0004] This lime-treated fertilizer making apparatus is intended to treat odorous gas such as sludge, garbage, food residue, livestock dung and the like, so that a large amount of odorous gas is generated when the fertilizer is made. .

[0005] To cope with this, conventionally, of such a lime treatment fertilizer making apparatus, only a lime treatment tank that exhausts a large amount of air has been deodorized.

[0006]

However, in the above-mentioned lime-treated fertilizer producing apparatus, actually, the odorous gas is also generated from the pretreatment section and the storage section for storing the lime-treated fertilizer immediately after the production. Thus, the measures for preventing the odorous gas were insufficient.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a deodorizing system which can solve the disadvantages of the prior art and can deodorize exhaustively the odorous gas generated from the entire lime processing fertilizer producing apparatus.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a lime treatment tank for mixing a pretreated material such as sludge, garbage, food residue, livestock dung and quicklime, and a lime treatment tank produced by the lime treatment tank. This is a deodorizing system for treating malodorous gas generated from a lime-treated fertilizer making device having a storage unit for storing fertilizer.

[0009] Such a deodorizing system comprises a partition for isolating the entire lime treatment fertilizer making apparatus from the outside, a pretreatment section isolation section for further isolating the pretreatment section, and a malodorous gas in a lower region in the pretreatment section isolation section. A first deodorizing section for deodorizing the malodorous gas in the lime treatment tank, a second deodorizing section for deodorizing the malodorous gas in the upper region of the pretreatment section isolation section and the malodorous gas around the storage section, First flow urging means for sending the malodorous gas in the lower region in the processing unit isolation unit to the first deodorizing unit side, and the malodorous gas in the upper region of the preprocessing unit isolation unit and the malodorous gas around the storage unit And a second flow urging means for sending the fluid to the second deodorizing section.

[0010] Inside the pretreatment section isolation section for isolating the pretreatment section, two types of malodorous gases having different specific gravities (for example, a malodorous gas containing hydrogen sulfide having a specific gravity higher than that of air as a malodorous component and a lighter specific gravity than air). Odor gas containing ammonia as an odor component). For this reason, inside the pretreatment part isolation part, the malodorous gas containing ammonia accumulates in the upper region and the other malodorous gas containing hydrogen sulfide accumulates in the lower region in a separated state.

On the other hand, in the lime treatment tank, the quick lime reacts with the organic matter to generate a large amount of water vapor, which is sent to the first deodorizing section together with the malodorous gas. For this reason, the pressure in the first deodorizing section increases, but the offensive odor gas in the lower region in the pretreatment section separating section is forcibly sent to the first deodorizing section side by the first flow urging means. Therefore, no backflow occurs.

Then, in the first deodorizing section, the malodorous gas (containing hydrogen sulfide) in the lower region in the pretreatment section isolation section and the malodorous gas (containing ammonia) in the lime treatment tank are mixed.
Here, the hydrogen sulfide is deodorized in the lime treatment tank. Further, the malodorous gas (containing ammonia) in the lime treatment tank is deodorized by the first deodorizing section.

Further, the odorous gas in the upper region of the pretreatment section isolation section and the odorous gas in the storage section both contain ammonia as the main odorous component, and both of them have the second flow urging means. It is sent to the second deodorizing section and deodorizing is performed at the same time.

[0014] In addition to the above-described configuration, the first flow urging means includes a guide path for guiding malodorous gas in a lower region in the pretreatment section isolation section into the lime treatment tank. A configuration may be adopted in which the malodorous gas in the lower region in the pretreatment unit isolation unit is guided to the first deodorization unit via the treatment tank.

Further, in addition to the above configuration, the second flow urging means includes a canopy-shaped hood member disposed above the storage section, and the odor gas in the storage section is removed through the hood member. It is good also as a structure guide | induced to a 2nd deodorizing part simultaneously with surrounding air.

Further, the pretreatment section separating section may be divided into an upper area and a lower area by a partition plate through which gas can flow freely.

Further, as a new configuration, a partition for isolating the entire lime treatment fertilizer making apparatus from the outside, and a first for deodorizing a malodor gas in a low place area in the partition and a malodor gas in the lime treatment tank. A deodorizing section, and a second deodorizing section for deodorizing the malodorous gas in the high area in the partition and the malodorous gas around the storage section,
The first flow urging means for sending the malodorous gas in the low place area in the partition to the first deodorizing section side, and the second malodor gas in the high place area in the partition and the malodorous gas around the storage section are converted into the second. And a second fluid urging means for sending to the deodorizing section.

In this configuration, the odor component having a small specific gravity is directly collected from the high place and the malodor component having a large specific gravity is collected from the low place directly in the isolation wall, not in the pretreatment section isolation section described above. Except for the above, the same operation as the first configuration is performed.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

FIG. 1 shows a block diagram of the present embodiment. In this embodiment, as shown in FIG. 1, a storage unit in organic matter such as sludge, garbage, food residue, and livestock dung, a crushing unit for crushing these lumps, and a dehydrator for dehydrating these excess water are provided. A pretreatment section S having a sending section for sending organic matter to a downstream side;
1, a lime treatment tank S2 for mixing dehydrated organic matter and quicklime, and a bad odor generated from a lime treatment fertilizer making apparatus S having a storage unit S3 for storing the lime treatment fertilizer created by the lime treatment tank S2. 1 shows a deodorizing system 10 for treating gas A.

The deodorizing system 10 includes a partition wall 1 for isolating the entire lime processing fertilizer producing apparatus S from the outside, a pretreatment section isolation section 2 for isolating the pretreatment section S1, and a pretreatment section isolation section 2.
The first deodorizing section 3 for deodorizing the malodorous gas A1 in the lower area 21 and the malodorous gas A3 in the lime treatment tank S2, and storing the malodorous gas A2 in the upper area 22 of the pretreatment section isolation section 2 A second deodorizing section 4 for deodorizing the malodorous gas A4 around the section S3 and a first deodorizing section 3 for sending the malodorous gas A1 in the lower region 21 in the pretreatment section isolation section 2 to the first deodorizing section 3 side. A flow urging means 5; a second flow urging means 6 for sending the malodorous gas A2 in the upper region 22 of the dewatering unit isolation unit 2 and the malodorous gas A4 around the storage unit S3 to the second deodorizing unit 4; It has.

Hereinafter, each part will be described in detail by taking as an example a case where the organic matter to be subjected to lime treatment is sewage sludge.

The partition 1 accommodates all the components of the lime-processing fertilizer making apparatus S and the deodorizing system 10 therein and is sealed from the outside. For this reason, the flow of gas to the outside is not performed except from the piping provided through the partition 1 and the outside air intake 11 in FIG. The outside air intake 11 is provided with the second flow urging means 6, which takes in the odorous gas A4 together with the air around the storage section S3, deodorizes it, and exhausts it to the outside of the partition 1, so that the pressure inside the partition 1 decreases. It is provided for the purpose of taking fresh outside air in order to prevent it. The outside air intake 11 is provided with a one-way valve 12 that allows the gas to flow only in a direction from the outside to the inside.

The pre-processing section isolation section 2 includes a pre-processing section S 1 therein.
Is a hermetically sealed container. A partition plate 23 that divides the interior into an upper region 22 and a lower region 21 is provided inside the preprocessing unit isolation unit 2. This partition plate 23 is formed in the shape of a cage that allows the gas to flow freely, and the pre-processing unit S1 is placed on the upper surface thereof. With this partition plate 23 as a boundary, components (eg, hydrogen sulfide) heavier than air in the malodorous gas A generated from the pretreatment unit S1 are located in the lower region 21 and components lighter than air (eg, ammonia) are located in the upper region 22. Is to stay.

A pipe 51 communicating with the inside of the lime treatment tank S 2 is connected to the lower area 21 of the pretreatment section isolation section 2, and a pipe 61 communicating with the second deodorization section 4 is connected to the upper area 22. Is connected. In addition, these pipes 51, 61
, The odorous gas A inside the pre-processing unit isolation unit 2 is sucked out, so that the pre-processing unit isolation unit 2 is provided with an outside air intake 24 for newly taking in outside air. This outside air intake 24
Is equipped with a one-way valve 25 that allows the gas to flow only in the direction from the outside to the inside so that the bad odor gas A inside does not leak.

The partition plate 23 and the outside air intake 24 are located between the boundary determined by the volume ratio of a component (eg, hydrogen sulfide) heavier than air and a component (eg, ammonia) lighter than air in the odorous gas A. It is set to a certain height. That is, inside the pre-processing section isolation section 2, air stays near the partition plate 23, and the malodorous gas A 1 containing hydrogen sulfide below the partition plate 23.
Accumulates above and the odorous gas A containing ammonia
2 accumulates.

In the pre-treatment section S1, sewage sludge D '(a viscous fluid composed of sewage organic matter) is sent from a vacuum car to its storage section. Further, the sewage sludge D 'is dehydrated by the dehydrator to become dehydrated sludge D, and is forcibly sent to the lime treatment tank S2 via the transport pipe S4 by the screw at the sending section. The dehydrated water is discharged to the outside of the pretreatment unit isolation unit 2 by the isolated pipe. In the case of garbage treatment, the garbage is finely divided in a crushing section, dehydrated as necessary, and then mixed with lime. Here, the above processes performed by the preprocessing unit are collectively referred to as “preprocessing” below.

Here, the odorous gases A1, A2 generated when the sewage sludge D 'is pretreated will be considered. Sewage sludge D 'emits various odorous components due to decay and fermentation if the storage time is prolonged. Specific examples include hydrogen sulfide, amines, ammonia, and mercaptan. Therefore, at the time of dehydration, the malodorous component generated varies depending on the type of the sewage sludge D ′, but generally, hydrogen sulfide and ammonia are mostly contained.

Next, a description will be given of the first flow urging means 5 disposed downstream of the pre-processing section separating section 2. The first fluid urging means 5 is provided with a pipe 51 for communicating the lower area 21 of the pretreatment section isolation section 2 and the inside of the lime treatment tank S2.
And a pressure pump 52 for energizing the flow of the malodorous gas A1 in the middle of the pipe 51, and a pipe 53 for connecting the inside of the lime treatment tank S2 and the first deodorizing section 3.

Here, the pipe 51 functions as a guide path in which the first flow urging means 5 guides the malodorous gas in the lower area 21 in the pretreatment section isolation section 2 into the lime treatment tank S2, The odorous gas A1 is discharged through the pipe 51 and the lime treatment tank S2 to the first place.
Is guided to the deodorizing section 3. This aims at deodorizing hydrogen sulfide contained in the malodorous gas A1 by reacting it with water vapor and slaked lime generated in the lime treatment tank S2.

FIG. 3 shows a lime treatment tank S 2 and a first deodorizing section 3.
And the first fluid urging means 5. Lime treatment tank S
Reference numeral 2 denotes a closed container in which granulation (drying of the dewatered sludge D into granules) is performed, in which a transport pipe S4 communicating with the pretreatment unit S1 and the pipes 51 and 53 described above are provided. Is connected. Quicklime (not shown) is previously charged into the lime treatment tank S2, and the flow tube S4
Is supplied with dewatered sludge D. The lime treatment tank S2 is provided with a stirrer S21 for mixing and stirring quicklime and dehydrated sludge D.

Further, the stirrer S21 has a function of granulating the dewatered sludge 22 and the quicklime while stirring them. The lime treatment tank S2 is provided with an openable / closable take-out port S22 for checking the degree of granulation and taking out the finished lime-treated fertilizer H to the outside.

Here, the odorous gas A3 generated when the lime treatment fertilizer is prepared inside the lime treatment tank S2 will be considered. The principle of making lime-treated fertilizer from organic matter such as sludge, raw garbage, food residue, livestock dung using quicklime is quicklime (CaO),
It is to solidify using water (H2O) in sewage sludge. The chemical reaction is represented by the following reaction formula (1).

CaO + H2O → Ca (OH) 2 + heat of reaction (1)

In the above formula, Ca (OH) 2 is slaked lime.
The causes of the offensive odor in this process are as follows: (1) Since the slaked lime (Ca (OH) 2) produced is alkaline, weakly basic sites contained in organic substances such as sludge, garbage, food residues, and livestock dung are released. Then, the reaction heat evaporates and scatters, dispersing a strong odor. (2) The organic material is heated by the heat of reaction, and the components that are relatively easily vaporized are vaporized as they are and emit a bad smell. it is conceivable that. Therefore, the nature of the malodorous component is considered to be chemically alkaline to neutral and physically relatively easy to evaporate. In practice, most of the malodorous components are ammonia.

The lime treatment tank S2 is provided with a malodorous gas A1 from the lower region 21 of the pretreatment unit isolation unit 2 via a pipe 51.
Is fed by the pressure feed pump 52. The influx of the malodorous gas A1 makes it possible to send the moisture of the dewatered sludge D and the malodorous gas A3 generated when preparing the lime-treated fertilizer to the downstream side.

As described above, the malodorous gas A1 contains malodorous components such as hydrogen sulfide. On the other hand, inside the lime treatment tank S2, slaked lime is generated by the reaction between the moisture of the dewatered sludge D and quick lime, so that the malodorous gas A3 is alkaline. Therefore, the hydrogen sulfide in the malodorous gas A1 is neutralized and deodorized in the lime treatment tank S2. This chemical reaction is represented by the following reaction formulas (2) and (3).

H 2 S + H 2 O → H 2 SO 4 (2)

H 2 SO 4 + Ca (OH) 2 → CaSO 4 + 2H 2 O (3)

That is, the hydrogen sulfide generated in the lower region 21 of the pretreatment separation unit 2 is deodorized in the lime treatment tank S2.
Therefore, the malodorous gas A3 (mixed with the malodorous gas A1) discharged from the lime treatment tank S2 includes only ammonia generated when mixing and stirring the dehydrated sludge D and quicklime as a malodorous component. Become.

The malodorous gas A3 from the lime treatment tank S2 is sent to the first deodorizing section 3 via the pipe 53. The first deodorizing section 3 includes a sealed container main body 31, an impregnating medium 32 made of fibrous material such as peat moss and coconut shell, which is enclosed in the container main body and wrapped in a net 32a; 32 is impregnated with a weak acid such as phosphoric acid.

A pipe 53 is connected to the lower part of the container body 31 and an exhaust pipe 33 is connected to the upper part. Container body 3
Since the impregnating medium 32 is located at the intermediate portion of
The odorous gas A3 flowing from the gas flows out of the exhaust pipe 33 through the impregnating medium 32. At this time, when the malodorous gas A3 passes through the impregnating medium 32, ammonia, which is a malodorous component, reacts with phosphoric acid to be neutralized and deodorized.

The first deodorizing section 3 includes a packing 31
Since it is stopped by the screw 31b via a, it can be divided. As a result, the impregnating medium 32 inside is
The entire 2a can be replaced. A drain port 34 having a drain cock 34a is provided below the first deodorizing section 3. When the malodorous gas A3 containing a large amount of water vapor is deodorized, the malodorous gas A3 is cooled by the outside air via the container main body 31, and the water vapor is condensed to collect water droplets at the bottom of the container main body 31. The water droplets are transferred to this drain 3
4 allows the container body 31 to be discharged to the outside.

The odorous gas A3 that has passed through the container body 31 is deodorized, is urged to flow by the pressure pump 52, and is discharged as odorless gas M outside the partition 1. Here, in addition to the pressure feed pump 52, a suction pump 35 for urging the flow in the same direction is provided in the exhaust pipe 33 described above. By driving the suction pump 35, the pressure inside the container body 31 becomes lower than that in the lime treatment tank S2, and the odorous gases A1, A3 are scattered into the partition wall 1 when the outlet S22 of the lime treatment tank S2 is opened. Has been prevented.

The exhaust pipe 33 has a sub-passage 33b provided in parallel with the main passage 33a provided with the suction pump 35 and steam explosively generated immediately after mixing the quicklime and the dewatered sludge D. A relief valve 36 is provided to allow the pressure to escape outside the partition 1. The relief valve 36 operates effectively only for a few minutes after the mixing of quicklime and dehydrated sludge D is started.

FIG. 4 shows the configuration around the storage section S 3 and the second deodorizing section 4. In this storage section S3, the lime processing fertilizer H immediately after being created in the lime processing tank S2 is transported and deposited by the belt conveyor S31. Since the lime-treated fertilizer H is alkaline and warm due to residual heat, it mainly has ammonia as a malodorous component. The lime-treated fertilizer immediately after the preparation is cooled and dried in the storage section S3.

Here, the odorous gas A4 generated in the storage / drying process after the lime-treated fertilizer H is prepared will be considered. After the lime treatment Hikami H is created, many of the malodorous components are alkaline and easily vaporized due to the residual heat of the reaction heat of quicklime and water. In addition, since the temperature becomes high and the pH becomes high, most of the microorganisms that have propagated in the object to be treated die.
Furthermore, since the lime is solidified after the treatment with quick lime, the water content becomes very low, so that thermophilic bacteria and mold spores do not reproduce again. That is, most of the specific malodor component of the malodor gas A4 is ammonia.

The second flow urging means 6 includes a canopy-shaped hood member 62 disposed above the storage section S3 so as to uniformly cover the rising odorous gas A4.
The pipe 61 described above, a pipe 63 communicating with the hood member 62 and merging with the pipe 61,
It mainly comprises a pipe 64 for guiding the 63 to the second deodorizing section 4, and a turbo blower 65 disposed downstream of the second deodorizing section 4 to flow the malodorous gases A 2, A 4 downstream.

Since the hood member 62 is not of a closed structure, not only the odor gas A4 generated from the storage section S3 but also the odor gas A generated from the belt conveyor S31 and the air in the partition wall 1 are sucked. Can be led to the deodorizing section 4. Therefore, it is possible to maintain a clean state without diffusing the malodorous gas A into the inside of the partition 1.

The odorous gas A 2 and the odorous gas A 4 are simultaneously sucked by the turbo blower 65, but are sucked through the hood member 62 when the air is sucked from the upper region 22 of the pretreatment unit isolation unit 2. Since the pressure resistance is smaller than in the case, a flow regulating valve 61a is attached in the middle of the pipe 61 in order to maintain equality between them.

The second deodorizing section 4 has substantially the same structure as the first deodorizing section 3. That is, the container body 41 was hermetically sealed, the impregnating medium 42 made of fibrous material such as peat moss and coconut shell was enclosed in the container body 41 and wrapped in the net 42a, and the impregnating medium 42 was impregnated. It is configured to have a weak acid such as phosphoric acid.

A pipe 64 is connected to the lower part of the container body 41, and an exhaust pipe 43 is connected to the upper part. Container body 4
Since the impregnating medium 42 is located at the intermediate portion of the
The odorous gases A2 and A4 flowing from the air pass through the impregnation medium 42 and exit from the exhaust pipe 43. At this time, the odorous gas A
2. As A4 passes through the impregnating medium 42, ammonia, which is a malodorous component, reacts with phosphoric acid to be neutralized and deodorized.

The second deodorizing section 4 includes a packing 41
Since it is stopped by a screw 41b via a, it can be divided. As a result, the inner impregnating medium 42 is
The entire 2a can be replaced. A drain port 44 having a drain cock 44a is provided below the second deodorizing section 4. When deodorizing the malodorous gases A2 and A4 containing a large amount of water vapor, the malodorous gases A2 and A4 are cooled by the outside air via the container main body 41, and the water vapor is condensed to collect water droplets at the bottom of the container main body 41. Such water droplets can be discharged to the outside of the container body 41 through the drain port 44.

The odorous gases A2 and A4 that have passed through the container body 41
Is deodorized, is urged to flow by the turbo blower 65, and is discharged as odorless gas M outside the partition wall 1.

Hereinafter, the operation of the present embodiment will be described.

First, in the pretreatment section S1, pretreatment of the sewage sludge D 'is performed to generate dehydrated sludge D. At this time, inside the pretreatment section isolation unit 2, the malodorous gas A1 containing hydrogen sulfide as a malodorous component stays in the lower region 21 and the malodorous gas A2 containing ammonia as a malodorous component stays in the upper region 22.

The malodorous gas A1 is sent into the lime treatment tank S2 by the pressure pump 52 of the first fluid urging means 5.
In the lime treatment tank S2, the dewatered sludge D is granulated. In the lime treatment tank S2, quicklime and water in the dewatered sludge D react. As described in Reaction Formula 1, 1 mole of water reacts with 1 mole of quicklime. However, since excess water can be evaporated by the heat of reaction, the excess water is blown out of the lime treatment tank S2 by adding air while mixing and mixing quicklime and dehydrated sludge D.

That is, the odorous gas A1 generated by the pump 52
, The water in the lime treatment tank S2 is removed, and at the same time, the malodorous gas A3 generated in the lime treatment tank S2 is sent to the first deodorizing section 3. At this time, inside the lime treatment tank S2, hydrogen sulfide, which is a malodorous component of the malodorous gas A1, reacts with steam and slaked lime to deodorize, as shown in the reaction formulas (2) and (3). That is, the malodor component contained in the malodor gas A3 sent to the first deodorizing section 3 is only ammonia.

In the first deodorizing section 3, deodorization is performed by condensation of water and a chemical reaction of a malodorous component (ammonia) (specifically, phosphoric acid which is a weak acid). The malodorous substance A3 that has passed through the first deodorizing section 3 becomes an odorless gas and is discharged into the atmosphere outside the partition 1.

On the other hand, the driving of the turbo blower 65 of the second flow urging means 6 causes the upper region 22
Odor gas A2 and the odor gas A4 generated from the reservoir S3
Is sent to the second deodorizing section 4. As already discussed, freshly prepared lime-treated fertilizer H has a high temperature and a high pH value, so that most of the malodorous component is ammonia. Therefore, in order to deodorize the ammonia of the completed lime treatment fertilizer H, the odor member A4 sucked by the hood member 62 from above the storage part S3 together with the air in the surrounding partition wall and containing ammonia is used for the second deodorization. Sent to the department.

The malodorous gas A2 is also simultaneously deodorized in the second deodorizing section 4 because its malodorous component is ammonia. As a result, the odorous gases A2 and A4 become odorless gases M
And is discharged to the outside of the partition 1.

As described above, the deodorizer room, the lime treatment tank, the temporary storage unit, and the room in which the lime treatment fertilizer making device is installed are all deodorized by the first and second deodorizing units.

In the present embodiment, the lime processing fertilizer making apparatus S
The malodorous gases A1, A2, and A3 generated from the pretreatment section S1, the lime treatment tank S2, and the storage section S3, respectively, are distributed to the first deodorization section 3 or the second deodorization section 4, and individually deodorized. Due to the configuration to be performed, it is possible to deodorize the malodorous gas A generated from the entire lime processing fertilizer producing apparatus S without leaking.

In addition, since the partition wall 1 for isolating the entire lime processing fertilizer producing apparatus S is provided, leakage of the odorous gas A to the outside can be more strictly prevented.

Further, paying attention to the difference in the specific gravity of the two types of malodorous components (hydrogen sulfide and ammonia) generated from the pretreatment portion S1, the malodorous gas A is separated from the upper portion and the lower portion of the pretreatment portion isolation portion 2.
1. Because of the configuration in which A2 is collected and deodorized, it is possible to individually and effectively deodorize these different malodorous components.

Further, the odor gas A1 containing hydrogen sulfide, which is a malodor component having a heavy specific gravity, is mixed with the odor gas A3 generated from the lime treatment tank S2 to perform deodorization. It can react with water vapor and slaked lime contained in the offensive odor gas A3 to deodorize, and the dehydration structure for hydrogen sulfide can be omitted. Therefore, it is possible to simplify the system, reduce the size and weight, reduce the production cost, and improve the workability of deodorization.

Further, in the present embodiment, since the malodorous gas A4 around the storage section S3 is sent to the second deodorizing section 4 side by the second flow urging means 6, the malodorous gas generated from the storage section S3 is formed. The present invention is not limited to only A4, and thus it is possible to purify the air inside the partition 1 entirely.

Further, since the first deodorizing section 3 and the second deodorizing section 4 are configured to separately deodorize the malodorous gas A3 in the lime treatment tank S2 and the malodorous gas around the storage section 4, respectively.
Even when the lime treatment tank S2 is not in operation, the second flow urging means 6 can be driven to continuously purify the air in the partition 1 and keep the inside of the partition 1 clean at all times. It is possible.

Further, in the present embodiment, the pre-processing section isolation section 2
Odor gas A1 generated from the lower region 21 of the lime treatment tank S2
Therefore, the reaction between hydrogen sulfide, steam generated from the lime treatment tank and slaked lime can be further promoted, and the deodorizing effect can be further enhanced.

Further, since the odor gas A4 generated from the storage portion S3 is collected through the hood member 62, not only the odor gas A4 but also the surrounding air can be collected at the same time. It is possible to prevent the odor gas A4 from diffusing and to further purify the air in the partition wall 1.

Further, since the partition plate 23 is provided inside the pre-processing section separating section 2, two kinds of malodorous gases A1 and A2 containing different malodorous components are effectively separated and mixed without mixing. In the direction of flow. For this reason, insufficient deodorization due to mixing can be prevented, and deodorization can be performed more effectively.

Here, as the first or second deodorizing section, the following other forms can be mentioned.

(1) The impregnating medium is made porous, such as activated carbon or zeolite, so that the contact area with the odorous gas is widened while increasing the holding power of the chemicals. (Not shown)

(2) Cooling fins are provided outside the container body to enhance the cooling effect of the odorous gas and improve the water condensation power. (Not shown)

(3) A deodorant such as a weak acid or a weak alkali (phosphoric acid in this embodiment) is added with a pH indicator whose color changes according to a change in the pH value, and the reaction between the deodorant and the malodorous component is performed. The deterioration of the deodorizing effect caused by the above should be easily observed. (Not shown)

(4) The window 31 is provided at the lower part of the container main bodies 31, 41.
c and 41c are provided. Then, the inside can be observed, so that the timing of removing accumulated water droplets or the timing of adding a chemical due to a decrease in the deodorizing effect can be recognized from the outside in combination with the above (3). (Fig. 5)

The first or second deodorizing section is not limited to a deodorizing method using a chemical such as phosphoric acid, but can be any method if quick lime, ammonia and water vapor are treated. good. For example, deodorization by a catalyst, decomposition by a microorganism, and the like may be used.

Further, the deodorizing system 10 may be configured as shown in FIG. In this configuration, the preprocessing unit isolation unit 2 whose upper part is opened is replaced with the preprocessing unit isolation unit 2 described above.
A is provided. For this reason, the malodorous gas A ₂ containing ammonia generated in the pretreatment section S ₁ stays in the upper part in the partition 1. In order to cope with this, the upstream end of the pipe communicating with the second deodorizing section 4 is arranged not at the upper area of the pretreatment section isolation section 2A but at the highest section (high area) inside the partition wall 1. ing. With this configuration, the same effect can be obtained by the same operation as the configuration in FIG.

Incidentally, from the configuration shown in FIG. 6, a configuration in which the preprocessing isolation unit 2A is removed is also conceivable. In this case, the upstream end of the pipe 51 that communicates with the lime section S ₂ is disposed in the lowest portion serving floor of the partition wall 1 (low-income areas). Preprocessing unit S
_The malodorous gas A ₁ containing hydrogen sulfide generated from 1 stays on the floor in the partition wall 1 and is collected from the above-described pipe 51 and deodorized. Thereby, a similar effect can be obtained by a similar operation to the configuration of FIG. At the same time, it is possible to omit the preprocessing unit isolation unit 2A, thereby reducing the number of parts and improving the productivity of the apparatus. In addition, since the pretreatment part isolation part is omitted, it is conceivable that the malodorous gas spreads throughout the partition 1, but the purpose of preventing the malodorous gas from leaking to the outside of the deodorizing system 10 is sufficiently achieved. .

[0080]

According to the first aspect of the present invention, the odorous gas generated from the pretreatment unit, the lime treatment tank, and the storage unit, which are the respective components of the lime treatment fertilizer making apparatus, is removed by the first deodorization unit or the second deodorization unit. To separate and deodorize individually,
It is possible to deodorize odorous gas generated from the entire lime processing fertilizer making device without leaking.

Further, since there is a partition wall for isolating the entire lime processing fertilizer producing apparatus, it is possible to more strictly prevent the leakage of the malodorous gas to the outside.

Further, paying attention to the difference in the specific gravity of the two types of malodor components generated from the pre-processing unit, a configuration is adopted in which the malodor gas is collected from the upper and lower parts of the pre-processing unit isolation unit and deodorized. It is possible to perform effective deodorization individually.

Further, since a malodor gas containing hydrogen sulfide, which is a malodor component having a heavy specific gravity generated at this time, is mixed with a malodor gas generated from a lime treatment tank, deodorization is performed.
It can react with water vapor and slaked lime contained in the malodorous gas in the lime treatment tank to deodorize, and the dehydration structure for hydrogen sulfide can be omitted. Therefore, it is possible to simplify the system, reduce the size and weight, reduce the production cost, and improve the workability of deodorization.

Further, in the present invention, since the second flow urging means is configured to send the malodorous gas around the storage section to the second deodorizing section side, the present invention is not limited to the malodorous gas generated from the storage section. As a result, it is possible to purify the air inside the partition.

Further, since the first odor removing section and the second deodorizing section separately deodorize the odorous gas in the lime treatment tank and the odorous gas around the storage section, respectively, the lime treatment tank is not operated. Even at this time, it is possible to continuously clean the air in the partition by driving the second flow urging means, and it is possible to always keep the inside of the partition clean.

According to the second aspect of the present invention, since the malodorous gas generated from the lower region of the pretreatment section isolation section is sent to the first deodorization section via the lime treatment tank, the gas is generated from the hydrogen sulfide and the lime treatment tank. The reaction with steam and slaked lime can be further promoted, and the deodorizing effect can be further enhanced.

According to the third aspect of the present invention, since the odor gas generated from the storage section is collected through the hood member,
It is possible to collect not only the odorous gas but also the surrounding air at the same time, and it is possible to prevent the odorous gas from diffusing in the partition and to further purify the air in the partition.

According to the fourth aspect of the present invention, since the partition plate is provided inside the pretreatment section isolation section, two types of malodorous gases containing different malodorous components can be effectively separated and mixed without mixing. In the direction of flow. For this reason, insufficient deodorization due to mixing can be prevented, and deodorization can be performed more effectively.

According to the fifth aspect of the present invention, the pretreatment section isolation section is omitted, and malodorous gases having different specific gravities are directly collected from a high place and a low place in the partition wall.
In addition to having the same effect as the described invention, it is possible to reduce the number of parts for the pre-processing unit isolation unit and improve the productivity of the apparatus.

According to the present invention, it is possible to provide an unprecedented excellent deodorizing system having the above-mentioned effects.

[Brief description of the drawings]

FIG. 1 is a block diagram of one embodiment of the present invention.

FIG. 2 is a cross-sectional view of a pre-processing unit isolation unit.

FIG. 3 is an explanatory diagram showing a cross section of a lime treatment tank and a first deodorizing section and showing a configuration around them.

FIG. 4 is an explanatory view showing a cross section of a second deodorizing section and showing a configuration of a second flow urging means.

FIG. 5 is a front view showing another example of the first deodorizing section or the second deodorizing section.

FIG. 6 is a block diagram showing another configuration of the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Partition wall 2 Pre-processing part isolation part 21 Lower area 22 Upper area 23 Partition plate 3 First deodorization part 4 Second deodorization part 5 First flow urging means 51 Pipe (guideway) 6 Second flow Power means 62 Food member 10 Deodorizing system S Lime processing fertilizer making device S1 Pretreatment section S2 Lime processing tank S3 Storage section A, A1, A2, A3 Odorous gas

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshio Annaka 2-16-46 Minami Kamata, Ota-ku, Tokyo Inside Tokimec Inc. (72) Inventor Mutsumi Takahashi 2-16-46 Minami Kamata, Ota-ku, Tokyo No. 72 Tokimec Co., Ltd. (72) Inventor Yasuo Abe 2-16-46 Minami Kamata, Ota-ku, Tokyo Stock Company Intra-company Co., Ltd. (72) Shigeo Takayama 2-16-46 Minami Kamata, Ota-ku, Tokyo Co., Ltd. (56) References JP-A-6-263573 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B01D 53/38 B01D 53/34 B01D 53/81 C05G 1 / 00

Claims (5)

(57) [Claims] 1. A pretreatment section having a storage section for temporarily storing at least an organic substance such as sludge, garbage, food residue, or livestock dung, and the organic substance and quicklime. A lime treatment tank for mixing, and a deodorizing system for treating malodorous gas generated from a lime treatment fertilizer making device having a storage unit for storing the lime treatment fertilizer created by the lime treatment tank, wherein the lime treatment A partition for isolating the entire fertilizer making apparatus from the outside, a pre-processing section isolation section for isolating the pre-processing section within the partition, an odorous gas in a lower region in the pre-processing section isolation section, and the inside of the lime treatment tank. A first deodorizing section for deodorizing the offensive odor gas; a second deodorizing section for deodorizing the offensive odor gas in the upper region of the pretreatment section isolation section and the odorous gas around the storage section; and the pretreatment. In the lower area of the isolation area First flow urging means for sending a malodorous gas to the first deodorizing unit side; And a second fluid urging means for sending to the section. 2. The lime treatment tank, wherein the first flow urging means includes a guide path for guiding a malodorous gas in a lower region in the pretreatment section isolation section into the lime treatment tank. 2. The deodorizing system according to claim 1, wherein a malodorous gas in a lower region in the pretreatment unit isolation unit is guided to the first deodorization unit via the first unit. 3. The second flow urging means includes a canopy-shaped hood member disposed above the storage section, and the odor gas in the storage section is removed from the surrounding air via the hood member. The deodorizing system according to claim 1, wherein the system is guided to the second deodorizing unit at the same time. 4. The pretreatment section separating section according to claim 1, wherein the upper section and the lower section are divided into two parts by a partition plate through which gas can flow freely. Deodorizing system. 5. A pretreatment unit having a storage unit for temporarily storing at least organic matter such as sludge, raw garbage, food residue, or livestock dung, and said organic matter and quicklime. A lime treatment tank for mixing, and a deodorizing system for treating malodorous gas generated from a lime treatment fertilizer making device having a storage unit for storing the lime treatment fertilizer created by the lime treatment tank, wherein the lime treatment A partition wall for isolating the entire fertilizer making apparatus from the outside, a first deodorizing section for deodorizing a malodorous gas in a low place area in the partition wall and a malodorous gas in the lime treatment tank, and a high place area in the partition wall A second deodorizing section for deodorizing the odorous gas in the inside and the odorous gas around the storage section; and a first fluidizing section for sending the odorous gas in a low area in the partition to the first deodorizing section side. Force means, and a high area in the partition wall Deodorization system according to the malodorous gas and the second flow biasing means for sending and malodorous gas surrounding the reservoir to the second deodorizing unit, comprising: a.