JPH0731836A - Packing type biological deodorizing apparatus - Google Patents

Abstract

PURPOSE:To perfectly deodorize exhaust gas by adsorbing and decomposing the offensive smell component in the exhaust gas. CONSTITUTION:An exhaust gas introducing duct and a water sprinkling part 15 are arranged to the upper part of the lower bed part 3 of a main body and photosynthetic bacteria are mixed with the water in the first water storage tank 8 of the bottom part in the lower bed part 3 and a deodorizing bed 21 due to a deodorant capable of propagating bacteria is provided to the intermediate part of the upper bed part 4 of the main body. The dust and water-soluble offensive smell component in exhaust gas are dissolved by the water emitted from a water sprinkling part 15 to be allowed to fall to the first water storage tank 8 and the water soluble offensive smell component is decomposed by photosynthetic bacteria while the residual offensive smell component is adsorbed by the deodorant of the deodorizing bed 21 and decomposed by bacteria.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling-type biological deodorizing device capable of adsorbing and decomposing odorous components in exhaust gas with a deodorant and microorganisms.

[0002]

2. Description of the Related Art Conventionally, deodorizers for exhaust gas from various treatment facilities have been filled with activated carbon as a deodorant, but the activated carbon has almost no adsorption of formaldehyde, methyl alcohol, propane, methyl chloride, ammonia, hydrogen sulfide, etc. Therefore, it has a drawback that exhaust gas cannot be completely deodorized, and since activated carbon is completely carbonized and has no nutrient source for microorganisms, it has a drawback that microorganisms do not propagate.

[0003]

DISCLOSURE OF THE INVENTION The present invention makes it possible to fill a deodorant in which microorganisms propagate and to completely adsorb and decompose odorous components in exhaust gas and discharge them outside the device in an odorless state. It is intended to provide a filling type biological deodorizing device.

[0004]

DISCLOSURE OF THE INVENTION In view of the problem that activated carbon cannot completely deodorize exhaust gas based on the above-mentioned conventional technique, the present invention has an exhaust gas introduction duct and a water sprinkling section arranged above the lower layer of the main body. It is installed and the first of the inner bottom of the lower layer
By mixing photosynthetic bacteria in the water storage tank, the dust and water-soluble odor components in the exhaust gas sent into the lower layer through the introduction duct are absorbed by the water discharged from the sprinkling unit and dropped into the first water storage tank, In addition to mixing it, the water-soluble odor component is decomposed by photosynthetic bacteria, and the deodorant of the deodorizing layer placed in the middle part of the upper layer of the main body is volcanite composed of black soil, kun charcoal and rock powder. By
Microorganisms easily propagate, so that the adsorption of odorous components and the decomposition by microorganisms proceed at the same time to deodorize,
This is a solution to the above drawbacks.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, in which 1 is a main body of a filling type biological deodorizing apparatus according to the present invention, the main body 1 having a substantially cylindrical shape and a partition wall disposed in the center. 2 is divided into a lower layer portion 3 and an upper layer portion 4, an exhaust port 5 is provided in the upper portion of the main body 1, a ventilation port 6 is formed in the center of the partition wall 2, and a peripheral wall portion is located above the edge portion of the ventilation port 6. 7, the bottom of the lower layer 3 is the first water tank 8, and the bottom of the upper layer 4 is the bottom of the peripheral wall 7 to form the second water tank 9. The first water tank 8 contains photosynthetic bacteria. , Activated sludge bacteria are mixed in the second water tank 9.

Reference numeral 10 is an introduction duct for the exhaust gas G disposed above the lower layer portion 3. The base end portion of the introduction duct 10 is projected to the outside of the lower layer portion 3 to form an introduction port 11 and the tip portion is opened downward. To form the outlet 12.

In this embodiment, the introduction duct 10 is provided with the air outlet 12 at the lower end of the tip. However, the present invention is not limited to this type, and a large number of air outlets 12 may be provided in the lower longitudinal direction of the introduction duct 10. good.

Reference numeral 13 is a water washing deodorizing device.
13 is a first water pipe 14 arranged outside the lower layer 3
It is branched to form sprinklers 15 and 15a. The sprinklers 15 and 15a are inserted in the upper part of the lower layer 3, and a large number of discharge holes (not shown) are provided at the inner ends of the sprinklers 15 and 15a. In addition, the base end of the first water supply pipe 14 is connected to a filtration tank 30 which will be described later, and a drain valve 16 and a water spray valve 17 are sequentially provided in the middle of the first water supply pipe 14 from the downstream side.

Reference numeral 18 denotes an aeration device arranged below the lower layer portion 3, and a large number of fumaroles (not shown) are provided at the inner end portion of the aeration pipe 19 inserted in the first water tank 8 and the outer end. Is connected to the air pump 20.

Reference numeral 21 denotes a deodorizing layer disposed in an intermediate portion in the upper layer portion 4, and a partition plate 22 having ventilation and water permeability is horizontally arranged in the upper layer portion 4 and gas particles are provided above the partition plate 22. A space 23 is formed above the deodorizing layer 21 by being filled with a deodorizing agent having a good adsorptivity and in which microorganisms easily propagate.

As the deodorant, Mitsubishi Nagasaki Kiko Co., Ltd.'s trade name "Volcanite" is used. The Volcanite is steamed from the black soil and the rice husk accumulated on the weathered sedimentary layer of volcanic products. It is a biodeodorant made by mixing roasted kun charcoal and rock powder and granulating.

Reference numeral 24 denotes a water sprinkling device provided above the upper layer portion 4, and a water sprinkling portion 26 is attached to the tip of a second water feeding pipe 25 inserted inward from the center of the upper surface of the upper layer portion 4 and a second water feeding pipe is provided.
25 base end is connected to the filtration tank 30 described later, and the second water supply pipe 25
A water supply valve 27, a drainage valve 28, and a sprinkling valve 29 are sequentially provided in the middle portion from the downstream side.

Reference numeral 30 denotes a filtration tank which is disposed on the lower side of the main body 1 and which is connected to the first and second water supply pipes 14 and 25.
The inside of 30 has a multi-layered structure in which an overgranular stone layer 31, a mat layer 32 for removing suspended matters in drainage, a coarse coral layer 33, a fine Krisvar layer 34 and a coarse Krisvar layer 35 are sequentially laminated from above. The filtration tank 30 and the second water storage tank 9 below the lower layer 3 are connected by a relay pipe 36.

Reference numeral 37 is a makeup water feed pipe to the first and second water storage tanks 8 and 9 of the lower layer portion 3 and the upper layer portion 4. The makeup water feeding pipe 37 is branched at an intermediate portion and one of the first The supply channel 38 is connected to the upper part of the lower layer 3, the other second supply channel 39 is connected to the upper part of the second water tank 9 in the upper layer 4, and the base end of the supply water feed pipe 37 is connected to the water supply part (not shown). The water supply valves 40 and 41 are provided in the first and second replenishment flow paths 38 and 39, and the solenoid valve 42 is provided in the replenishment water feed pipe 37.

Further, 43 is a ventilator arranged at the exhaust port 5 of the upper layer 4, 44 is a circulation pump for the washing and deodorizing device 13, 45 is a circulation pump for the sprinkler 24, and the lower side of the main body 1 It is arranged in the case 46 of the above, and 47 is the upper part of the lower layer part 3 and the filtration tank.
A strainer 48 is arranged in the middle of 30 connecting pipes.

Reference numerals 49 and 50 are first and second liquid level gauges, 51 is a micromanometer, 52 is an operation panel of the main body 1, and 53 is an inspection port provided on the side of the lower layer portion 3.

Next, the operation of the filling type biological deodorizer according to the present invention will be described. First, the exhaust gas G in a high temperature state is sent from the inlet 11 through the inlet duct 10 to the lower layer 3 through the outlet 12. Sprinkler parts 15 and 15 in the water deodorizing device 13
Water is discharged from the discharge hole of a to cool the exhaust gas G, and dust and ammonia in the exhaust gas G, lower amine,
Water-soluble odorous components having hydrophilic acidic groups such as aldehydes and lower organic acids are absorbed into the discharge water, and the treated water drops into the first water tank 8 and is mixed with the water-soluble odorous components by photosynthetic bacteria. Disassemble and remove.

On the other hand, the exhaust gas G in a low temperature state from which dust and water-soluble odor components have been removed is sent into the lower layer portion 3 from the ventilation port 6 and passes upward from below the deodorizing layer 21. The residual odorous component is removed by the adsorption of the deodorant and the decomposition by the microorganisms propagated in the deodorizing layer 21 at the same time to become an odorless state, and is discharged from the exhaust port 5 to the outside of the apparatus.

When replenishing the deodorizing layer 21 with water, the first
The water in the water storage tank 8 is sent to the filtration tank 30 through the relay pipe 36, the water from which impurities have been removed by the filtration tank 30 is sent to the second water supply pipe 25, and the water is sprayed from the sprinkling section 26 above the deodorizing layer 21. , Surplus water passes through the deodorization layer 21
The odorous components contained in the passing water are decomposed by the activated sludge bacteria while falling and mixing in the water storage tank 9.

Further, when the odorous components are decomposed by the microorganisms, a sulfide compound is produced in the first and second water storage tanks 8 and 9 and the deodorizing layer 21, but in the first and second water storage tanks 8 and 9, , While replenishing water from the second replenishment channels 38, 39 to dilute,
After removing the impurities in the treated water through the filter tank 30, the impurities are discharged to the outside of the apparatus or the first and second water supply pipes 14 and 25 are used.
To the lower layer part 3 and the upper layer part 4, and in the deodorizing layer 21, water is sprinkled from above the deodorizing layer 21 by the water sprinkling device 21, and at the same time, the sulfide compound is absorbed while passing through the deodorizing layer 21 to pass water. At the same time, it drops into the second water tank 9 and is mixed therein.

When the aeration device 17 is provided in the first water storage tank 8, the air pump 20 operates to feed air to the aeration pipe 19 and eject air from the air holes of the aeration pipe 19 to generate the first water storage. The water in the tank 8 is aerated to contain a large amount of oxygen, and the water in the first water tank 8 is stirred and convected by the jet pressure of air.

[0022]

In summary, the present invention divides the lower layer portion 3 and the upper layer portion 4 by the partition wall 2 having the vent hole 6 and provides the exhaust port 5 at the upper portion of the upper layer portion, and the first water tank at the bottom portion of the lower layer portion 3. 8
Also, since photosynthetic bacteria and activated sludge bacteria were mixed in the second water storage tank 9 at the bottom of the upper layer portion 4, they were removed from the exhaust gas G by the deodorization treatment described above and mixed in the first and second water storage tanks 8, 9. The water-soluble odorous components can be deodorized by photosynthetic bacteria and activated sludge bacteria, and can be deodorized.
10 and the water sprinklers 15 and 15a are provided, and the outlet 12 is provided at the lower part of the introduction duct 10. Therefore, by discharging water from the water sprinklers 15 and 15a into the introduction duct 10, the lower layer 3 by the introduction duct 10 is formed. Since the dust that causes the clogging of the deodorant and the water-soluble odor components having low adsorptivity due to the deodorant in the exhaust gas G sent into the inside of the exhaust gas G can be removed before the deodorization by the deodorizing layer 21, the deodorizing efficiency is improved. Since it is possible to improve the exhaust gas G and to cool the exhaust gas G sent in at a high temperature, it is possible to prevent the deodorizing layer 21 from having a high temperature and adversely affecting microorganisms and reducing the adsorbing power of the deodorant.

Further, since the deodorant is filled in the intermediate portion in the upper layer portion 4 to provide the deodorizing layer 21 and the water sprinkling portion 26 is provided above the deodorizing layer 21, the lower layer portion 3 contains the exhaust gas G in advance. Since the dust and the water-soluble odor component have been removed, the residual odor component in the exhaust gas G that could not be removed in the lower layer part 3 can be removed by the adsorption of the deodorant and the microbial decomposition at the same time.
Therefore, the deodorizing function of the deodorizing layer 21 can be extended, and the exhaust gas G that has become an odorless state by completely removing the residual odor components while passing through the deodorizing layer 21 can be discharged to the outside of the apparatus.

In addition, if the deodorant obtained by mixing black granite deposited on the upper portion of the weathered sedimentary layer of volcanic products, steamed rice husk charcoal, and rock powder and using a deodorizing agent, the conventional soil deodorizing Compared with, the passing speed is 5 to 10 times, and the contact area is 1/5
The same amount of odorous components can be removed in about 1/10, and thus the time required for deodorization and the deodorizing function can be prolonged.

Further, since the make-up water feed pipe 37 is provided in the first and second water storage tanks 8 and 9, since the sulfide compound produced at the time of decomposition of the odorous component by the microorganism has a high concentration, it adversely affects the microorganism. Periodically from the watering section 26 to the deodorizing layer 21,
From the first and second supply channels 38, 39, the first and second water storage tanks 8, 9
When makeup water is supplied into the inside of the deodorization layer 21, the makeup water passes downward from above and flows into the second water storage tank 9 together with the sulfide compound, and at the same time, the sulfide compounds in the first and second water storage tanks 8 and 9 are discharged. It is possible to dilute the concentration to maintain an appropriate PH, and thus the deodorizing layer 21 and the microorganisms mixed in the first and second water storage tanks 8 and 9 can be always activated to improve the deodorizing effect.

Since the aeration pipe 19 having a large number of fumaroles is arranged in the first water tank 8, air is ejected from the fumes of the aeration pipe 19 to aerate the water in the first water tank 8. By doing so, a large amount of oxygen can be contained, so that the photosynthetic bacteria in the first water storage tank 8 can be activated and the deodorization efficiency can be further improved, which is a great practical effect.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a filling type biological deodorizing apparatus according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a rear view of FIG. 1.

FIG. 4 is a plan view of FIG.

FIG. 5 is an enlarged cross-sectional view of an essential part showing a laminated state of filter media in a filtration tank.

[Explanation of symbols]

 2 Partition wall 3 Lower layer part 4 Upper layer part 5 Exhaust port 6 Vent hole 8 First water tank 9 Second water tank 11 Introducing duct 12 Outlet port 14 First water supply pipe 15, 15a Water sprinkling part 19 Aeration pipe 21 Deodorizing layer 26 Water sprinkling part 37 Makeup water feed pipe

Claims (2)

[Claims] 1. A partition formed with a vent is divided into a lower layer portion and an upper layer portion, and an exhaust port is provided at an upper portion of the upper layer portion, and the first water tank at the bottom portion of the lower layer portion and the second water tank at the bottom portion of the upper layer portion are provided. Mixing photosynthetic bacteria and activated sludge bacteria respectively, installing an introducing duct and a sprinkling part in the upper part of the lower layer and providing a blow-out port in the lower part of the introducing duct, and filling the deodorant in the middle part in the upper part to arrange the deodorizing layer. In addition, a filling type biological deodorizing apparatus characterized in that a sprinkler section is provided above the deodorizing layer, and make-up water feed pipes are provided in the first and second water storage tanks. 2. A first aeration pipe having a large number of fumaroles.
The filling-type biological deodorizing device according to claim 1, wherein the filling-type biological deodorizing device is arranged in a water tank.