JPS6315954A - Deodorizing facilities - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a deodorizing facility for foul-smelling air generated in livestock barns and the like.

[Conventional technology]

Odors are a problem in human waste treatment plants, sewage treatment plants, waste treatment plants, slaughterhouses, food factories, fish iliac treatment plants, pig farms, poultry farms, valve manufacturing industries, etc.

The main components of such malodorous components are generally ammonia, amines, hydrogen sulfide, methyl sulfide, and mercaptan. It contains sulfur atoms, and these nitrogen and sulfur atoms are the source of the bad odor.

By the way, conventional deodorizing methods are roughly divided into physical methods and chemical methods.For example, the physical method uses adsorption such as activated carbon, and the chemical method uses hydrogen sulfide, ammonia, and amines. For components that do not react with neutralization, such as mercaptan and methyl sulfide, chemical neutralization is performed using an alkali or acid such as caustic soda or sulfuric acid.For components that do not react with neutralization, such as mercaptan and methyl sulfide, oxidizing agents such as sodium hypochlorite, chlorine, and potassium permanganate are used. A method is used to oxidize and deodorize in the coexistence of alkali or acid.

However, the above-mentioned physical method has high running costs and is troublesome to regenerate or dispose of activated carbon.
There is also the risk of secondary pollution caused by foul-smelling gas during combustion.

On the other hand, with chemical methods, in order to effectively deodorize, consideration must always be given to the relationship between the degree of neutralization liquid and the concentration of malodorous gases, and the used neutralization liquid must be either acidic or alkaline. Since it will be discharged, of course it cannot be released as it is,
At least the pH must be adjusted before discharge, which requires complex equipment and maintenance.

Therefore, as a new deodorizing method that does not have high running costs, does not require complicated equipment or maintenance, and does not have to worry about secondary contamination, for example, the biochemistry of aerobic bacteria as described in Japanese Patent Application Laid-Open No. 57-200158 has been proposed. A method using a physical reaction has been proposed.

This method involves bringing malodorous gas containing ammonia, amines, hydrogen sulfide, methyl sulfide, mercaptans, etc. into gas-liquid contact with a culture solution containing aerobic bacteria, thereby removing malodorous components from the malodorous gas. Its purpose is to make malodorous components odorless by oxidizing and reducing them through enzymatic action.

[Problem that the invention seeks to solve]

However, if the gas-liquid contact is not carried out sufficiently, the deodorizing action of the deodorizing liquid will be incomplete.

The purpose of the present invention is to eliminate the disadvantages of the conventional example, and to provide a deodorizing facility that can achieve effective gas-liquid contact with simple equipment, achieve a high deodorizing effect, and facilitate post-processing. be.

[Means for solving problems]

In order to achieve the above object, the present invention provides an air supply pipe in the upper part of the malodorous air generation chamber and an exhaust pipe in the lower part, and the end of this exhaust pipe is opened into a separately formed deodorizing treatment chamber, and bacteria that performs the deodorizing action are provided. The gist is that the ceiling of the deodorizing treatment chamber is formed with a filter impregnated with an enzyme solution or a deodorizing solution consisting of an enzyme solution and a bacterial solution, and the upper part of the ceiling is open.

[Effect]

According to the present invention, the foul-smelling air from the room where the foul-smelling odor is generated mixes with the air flowing from the air supply pipe to the exhaust pipe, is absorbed into an independent deodorizing chamber, and rises as an air current. The rising air current within the deodorizing treatment chamber is deodorized by the deodorizing liquid impregnated in the filter that closes the upper part, and is released outside from the opening above as deodorized air.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a longitudinal sectional front view showing an embodiment of the deodorizing facility of the present invention, and shows an example in which the facility is used as a pigsty facility.

In the figure, reference numeral 1 indicates a pigsty, and an air supply pipe 2 for introducing outside air is provided near the ceiling, and a large number of air supply holes 2a are bored in this air supply pipe 2.

Reference numeral 3 in the figure is a excrement discharge pit in the pigpen 1, which is equipped with a drainer, etc. on the concrete floor. 4 in the figure is a raised slatted floor on which pigs live, and a standing fJB] 10 etc. may be installed on top of it.

Between the excrement discharge pit 3 and the slatted floor 4, an exhaust pipe 5 having a plurality of odor suction holes 5a bored in the peripheral wall is installed along the excrement discharge pit 3. This exhaust pipe 5 is introduced into an independent deodorizing treatment room 6 provided adjacent to or close to the pigpen 1,
A suction means 11 such as a blower is provided in the middle, and the tip thereof is opened at the lower center of the deodorizing chamber 6 as an odor discharge port 5b.

A cartridge-type paper deodorizing filter 8 is spread over the deodorizing chamber 6 to form a ceiling.
The top of the lid was covered.

FIG. 2 shows an example of the deodorizing filter 8.
The deodorizing filter 8 is a plate-like block made of a plurality of corrugated paper sheets 8a layered in an upright manner, and in this case, each corrugated paper sheet 8a has all the small through holes 8b formed by the corrugated paper inside. They are arranged vertically. These corrugated paperboards 8a are impregnated with a bacterial enzyme solution that has a deodorizing effect or a deodorizing solution consisting of an enzyme solution and a bacterial solution.

As the filter 8, in addition to the one made of paper as described above, beet fibers, glass wool, or other fibrous materials can be used.

Further, although not shown in the drawings, above the deodorizing filter 8 is a space above the ceiling of the deodorizing treatment chamber 6, which is opened to outside air through a louver or the like provided on the roof of the deodorizing treatment chamber 6.

The deodorizing liquid with which the deodorizing filter 8 is impregnated is a bacterial enzyme solution that performs a deodorizing action, or a deodorizing liquid consisting of an enzyme solution and a bacterial solution.

Bacteria that perform the deodorizing action include microorganisms selected from cellulose-degrading bacteria, filamentous fungi, sulfiding bacteria, air nitrogen-fixing bacteria, rhizobia, actinomycetes, yeast, and pseudomonas bacteria. Microorganisms may also be mixed.

For example, a mixture of bentonite, silicate clay, charcoal, etc.
Add 5 to 30% water, mix in a pure culture of the above microorganisms at a ratio of 1 part, and leave at 15 to 30'C for 24 hours or more to obtain a primary culture of bacteria. A secondary culture material obtained by further mixing the above mixture with the primary culture material, adding 15 to 30% water and culturing for 24 hours or more can be used.

Furthermore, bacteria that are not generally known can also be used.

Next, to explain how to use and operate, the outside air is taken in in the pigpen 1 through the air supply pipe 2, and the fresh air is diffused into the pigpen 1 through the air supply hole 2a, but the bad odor generated from the slatted floor 4 and the excrement discharge bit 3. The air becomes contaminated with components and becomes foul-smelling. This malodorous air is collected through the odor suction hole 5a by operating the suction means 11 provided in the exhaust pipe 5, and is discharged into the lower part of the deodorizing chamber 6 through the odor discharge port 5b opening into the deodorizing chamber 6. At this time, the foul-smelling air rises while being diffused within the deodorizing treatment chamber 6 and passes through the M-through hole 8b of the deodorizing filter 8. Then, the deodorizing filter 8 comes into contact with the deodorizing liquid impregnated, and gas-liquid contact occurs between the foul-smelling air and the deodorant liquid, and deodorization is performed by the action of the bacteria that performs the deodorizing action. The deodorized air thus made odorless is discharged into the outside air through an opening in the roof or the like of the deodorizing room 6.

Further, the used deodorizing filter 8 is incinerated or composted, and then replaced with a new one.

Although a sufficient deodorizing effect can be obtained with this alone, as another embodiment, an enzyme solution of bacteria or an enzyme solution and a bacterial solution that performs the deodorizing action is further added above the odor outlet 5b of the deodorizing processing chamber 6. A spraying pipe 7 having a large number of nozzles 7a may be provided in a meandering manner in multiple strips, and this spraying pipe 7 may be connected to a deodorizing solution source (not shown). .

On the other hand, the floor of the deodorizing treatment room 6 is formed as a sloped floor made of concrete, etc., and a liquid reservoir 9 is provided at the bottom, and the accumulated deodorizing liquid is flowed out to the outside using a vibrator. Here, the deodorizing liquid is regenerated.

The deodorizing liquid supplied to the spray pipe 7 may be of the same type as the deodorizing liquid with which the deodorizing filter 8 is impregnated.

In this way, the odor discharge port 5 that opens into the deodorization processing chamber 6
The foul-smelling air released into the lower part of the deodorizing chamber 6 from b rises while diffusing inside the deodorizing chamber 6, and the deodorizing liquid is jetted down from the spray pipe 7, and the foul-smelling air and the deodorizing liquid are combined. is deodorized by the action of bacteria that performs deodorizing action through gas-liquid contact, and as it continues to rise, the deodorizing action is performed by the deodorizing filter 8.
Complete deodorization.

On the other hand, the deodorizing liquid sprayed down from the spray pipe 7 performs a deodorizing action on the way, falls onto the floor, flows into the liquid reservoir 9, collects there, is taken out of the room through a vibrator, and is sent to a regeneration plant where it is regenerated. be done.

Although this embodiment concerns a pigsty, the present invention is not limited to a pigsty, but can be similarly applied to other livestock houses such as a chicken house and other facilities that generate bad odors.

〔Effect of the invention〕

As described above, the deodorizing facility of the present invention has a simple WI structure when deodorizing by bacterial action, and can achieve efficient deodorizing work by effectively bringing the gas into liquid contact. be. Additionally, disposing of used deodorizing filters is easy and there is no risk of secondary pollution.

Therefore, the bad odor inside the livestock barn is not leaked to the outside, which prevents bad odor pollution, and the livestock industry can be operated even if it is not deep in the mountains or in a remote area, which promotes the livestock industry. Note that it is economical because the waste liquid can be recycled and reused.

Moreover, the deodorizing facility of the present invention can have similar effects even when used in industries other than the livestock industry.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view showing one embodiment of the deodorizing facility of the present invention, and FIG. 2 is a perspective view showing an example of the same deodorizing filter. 1...Pigpen 2...Air supply pipe 2a...
Air supply hole 3... Excrement removal pit 4... Slatted floor 5... Exhaust pipe 5a... Odor suction hole
5b...Odor outlet 6...Deodorization processing chamber
7...Spraying pipe 7a...Spraying nozzle

Claims (1)

[Claims] An air supply pipe is installed in the upper part of the foul-smelling air generation chamber, and an exhaust pipe is installed in the lower part, and the end of this exhaust pipe is opened into a separately formed deodorizing treatment chamber. A deodorizing facility characterized in that the ceiling of the deodorizing treatment chamber is formed of a filter impregnated with a deodorizing liquid, and the upper part of the ceiling is open.