JPH07213852A - Deodorizing device - Google Patents

Abstract

PURPOSE:To reduce the device cost and running cost by using the device with the simple structure capable of sufficient deodorization. CONSTITUTION:One end of a preceding deodorization tank 2 is connected to an org, waste treating device 1 or to the exhaust port of a composting device, a succeeding deodorization tank 3 is connected to the other end of the tank 2, coffee grounds 11 after extraction are packed in the tank 2 as a microorganism carrier, and the coffee grounds after extraction or charcoal 13 are packed in the tank 3 as a microorganism carrier.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing odors generated during the processes of decomposing organic waste, composting, and the like.

[0002]

2. Description of the Related Art Organic wastes discharged from fisheries processing plants, food factories, etc. are decomposed by an organic waste treatment device or composted by a composting device. Has a great impact on the work environment and the surrounding environment, and the removal of odors is an important issue in developing an organic waste treatment device.

The gas generated in the organic waste treatment equipment and composting equipment is a hot and humid gas containing a large amount of carbon dioxide, has a high ammonia concentration, and contains sulfur compounds such as methyl mercaptan, methyl sulfide and methyl disulfide. There is.

Conventionally, as means for removing odors from gas, there are methods such as a liquid cleaning method, a chemical cleaning method, a soil deodorizing method, an activated carbon adsorption method, and a combustion deodorizing method.

[0005]

However, the above-mentioned conventional means has the following problems when applied to a deodorizing device for an organic waste treatment device or a composting device. (1) Since the liquid cleaning method and the chemical cleaning method require a shower tower and a packing tower, the apparatus becomes expensive. (2) The soil deodorization method solidifies the soil and creates cracks and holes.
Since the odor may come out in a short circuit without being absorbed by the soil, maintenance is required to loosen the soil, which is troublesome. In addition, since the soil has poor air permeability, when it is deposited to a thickness of 50 cm or more, the gas to be treated cannot pass through, and the aeration area must be widened to sufficiently deodorize, which requires a large site. (3) The activated carbon adsorption method has little effect on ammonia and lower amines, activated carbon as an adsorbent is expensive, and it takes time and effort to regenerate adsorbed waste carbon. (4) Combustion deodorization requires high running costs such as fuel costs.

It is an object of the present invention to provide a deodorizing device which is capable of sufficiently performing deodorizing, has a simple structure and does not require much device cost and running cost.

[0007]

Means and embodiments of the present invention are as follows.

<Means> In a deodorizing apparatus for an organic waste treatment device or a composting device, a deodorizing tank at one stage is connected to the exhaust port of the organic waste treating device or the composting device, and the other end of the deodorizing tank is provided. A deodorizing tank in the latter stage is connected to the former deodorizing tank, and the deodorizing tank in the former stage is filled with coffee extract cake as a microbial carrier, and the deodorizing tank in the latter stage is filled with coffee extract cake or charcoal as a microbial carrier.

<Embodiment 1> In a deodorizing apparatus for an organic waste treating apparatus or a composting apparatus, a deodorizing tank of one stage connected to an exhaust port of the organic waste treating apparatus or the composting apparatus is provided. A deodorizing tank at the latter stage is connected to the other end, and a blower for circulating the exhaust gas of the organic waste treatment device or the composting device into both of the deodorizing tanks is provided in the exhaust flow path, and coffee is used as a microorganism carrier in the deodorizing tank at the former stage. The extract cake is filled, and the deodorizing tank at the latter stage is filled with coffee extract cake or charcoal as a microorganism carrier.

<Embodiment 2> In a deodorizing device for an organic waste treatment device or a composting device, a deodorizing tank at a front stage is provided, one end of which is provided with an outside air intake port and which is connected to an exhaust port of the organic waste treating device or the composting device. , A deodorizing tank at the subsequent stage is connected to the other end of the deodorizing tank, and a blower for circulating the exhaust gas of the organic waste treatment device or the composting device into both of the deodorizing tanks is provided in the exhaust passage, and the deodorizing tank at the preceding stage is provided. Is filled with coffee extract cake as a microbial carrier, and the subsequent deodorizing tank is filled with coffee extract cake or charcoal as a microbial carrier.

[0011]

[Function] The odor-containing gas discharged from the organic waste treatment device and the composting device is mixed with the outside air and introduced into the deodorizing tank in the previous stage, and the odor substance is generated by the microorganisms carried on the carrier made of coffee extract cake. Ammonia and amines are decomposed.

Next, ammonia, carbon dioxide and water vapor produced by the decomposition of amines in the deodorization tank in the first stage, and a gas containing ammonia that could not be decomposed in the deodorization tank in the first stage are introduced into the deodorization tank in the second stage and the odor is removed. Ammonia, which is a substance, is decomposed here by microorganisms carried on a carrier made of charcoal or coffee extract cake, and a sufficiently deodorized gas is released to the atmosphere.

[0013]

EXAMPLE A specific example of the deodorizing apparatus according to the present invention is shown in FIG.
A detailed description will be given based on the system flow chart shown in FIG. The deodorizing device of the present invention is connected to the exhaust port of the organic waste treatment device 1, and is the first deodorizing tank 2 which is the deodorizing tank of the preceding stage.
And the second deodorizing tank 3 which is the latter deodorizing tank.

The suction duct 4 connected to the exhaust port of the organic waste treatment apparatus 1 is connected to the bottom of the first deodorizing tank 2 through the blower 5 and the air feeding duct 6 in this order, and the upper part of the first deodorizing tank 2 is connected. And the upper portion of the second deodorizing tank 3 are connected via a communication duct 7. Further, the suction duct 4 is connected to the other end of an outside air intake duct 8 whose one end is open so that the exhaust air from the organic waste treatment apparatus 1 and the outside air are mixed and sent by a blower 5. I am doing it.

Reference numerals 9a and 9b in the drawing are flow rate adjusting valves provided in the intake duct 4 and the outside air intake duct 8, respectively.
The mixing ratio of the exhaust air from the organic waste treatment apparatus 1 and the outside air can be adjusted.

By providing a partition plate 10 made of a perforated plate or a wire net at the bottom of the first deodorizing tank 2, a gas introduction space 2a for facilitating the introduction of gas is formed, and the partition plate is formed. 10 is filled with a microbial carrier 11 composed of coffee extract cake.

Like the first deodorizing tank 2, the second deodorizing tank 3 is also provided with a partition plate 12 having a bottom portion made of a perforated plate or a metal net, so that the gas derivation space 3 for facilitating the derivation of the gas.
a is formed, and the partition plate 12 is filled with a microbial carrier 13 made of coffee extract cake or charcoal. The bottom surface of the second deodorizing tank 3 is provided with a discharge duct 14 for discharging deodorized gas and a drain pipe 14 for discharging water generated by water vapor in the tank.

Next, the deodorizing action of the deodorizing apparatus of the present invention constructed as described above will be described. The outside air intake duct 8 is added to the exhaust containing the odorous substance from the organic waste treatment apparatus 1.
2) by mixing the outside air from the
The blower 5 has the first ventilation amount of 0 to 1000 times / Hr.
Supply to the deodorization tank 2.

At this time, the flow control valves 9a and 9b are operated so that the amount of oxygen in the gas supplied to the first deodorizing tank 2 is adjusted so as not to decrease, so that the activity of the microorganisms in the deodorizing tank is not impaired. To

In the first deodorizing tank 2, ammonia and amines are decomposed by the microorganisms carried on the carrier 11 made of coffee extract cake.

In the first deodorization tank 2, the carrier 11
Since the activity of microorganisms will be impaired if it is extremely moistened, control the relative humidity in the tank so that it is always within 80%.

Next, the gas containing ammonia, carbon dioxide and water vapor generated by the decomposition of the amine in the first deodorization tank 2 is introduced into the second deodorization tank 3 through the communication duct 7.
In the second deodorization tank 3, the microorganisms carried on the carrier 13 made of charcoal or coffee extract cake cause ammonia that could not be decomposed in the first deodorization tank and amines to be decomposed in the first deodorization tank. The ammonia is decomposed, and the gas that is sufficiently deodorized is discharged to the atmosphere through the discharge duct 14. Further, the water content generated by the water vapor in the tank is discharged through the drain pipe 15.

The following Table 1 shows data showing the deodorizing effect of the above-mentioned apparatus of the present invention.

[0024]

[Table 1] From the above results, ammonia and amines which are odorous substances in the gas discharged from the organic waste treatment device are removed,
You can see that it is deodorized. In the above embodiment, the upper part of the first deodorizing tank 2 and the upper part of the second deodorizing tank 3 are connected by the communication duct 7, but the upper part of the first deodorizing tank and the bottom part of the second deodorizing tank are connected. The discharge duct 14 may be provided above the second deodorizing tank.

[0025]

EFFECT OF THE INVENTION Since the deodorizing apparatus according to the present invention is provided with deodorizing tanks filled with a microbial carrier in two stages, front and rear,
Ammonia and amines that cause odors are microbially decomposed in two stages, and the gas discharged from the organic waste treatment device, the composting device, etc. can be sufficiently deodorized.

Further, since the coffee extract cake used as a microbial carrier is hard to harden and its air permeability is not impaired, the decomposition treatment amount of odorous substances by microorganisms does not decrease,
Moreover, it is possible to reduce the blowing power.

Further, since the structure of the device is simple and it is not necessary to provide a shower tower or a packing tower unlike the liquid cleaning method or the chemical liquid cleaning method, the cost of the device is not so high and the power used for the device is exhaust. Since only the blasting power to be circulated in the device is required, there is no fuel cost as in the combustion deodorization method, and coffee extract cake, which is an industrial waste, is used as the microbial carrier, so the running cost can be reduced.

[Brief description of drawings]

FIG. 1 is a system flow diagram of a deodorizing apparatus according to the present invention.

[Explanation of symbols]

 1 Organic Waste Disposal Device 2 First Deodorizing Tank 3 Second Deodorizing Tank 4 Intake Duct 5 Blower 6 Air Duct 7 Communication Duct 8 Outside Air Intake Duct 10 Partition Plate 11 Microorganism Carrier 12 Partition Plate 13 Microorganism Carrier 14 Release Duct 15 Drain tube

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display area C05F 17/02 7537-4H

Claims (1)

[Claims] 1. A deodorizing device for an organic waste treatment device or a composting device, wherein a deodorizing tank of one stage connected to an exhaust port of the organic waste treating device or the composting device is provided at the other end of the deodorizing device. Connect the deodorizing tank in the latter stage, and fill the deodorizing tank in the former stage with coffee extract cake as a microbial carrier.
A deodorizing device characterized in that the deodorizing tank in the latter stage is filled with coffee extract cake or charcoal as a microorganism carrier.