JPS62221354A - Deodorizing method and appliance - 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 method for deodorizing malodorous gases using microorganisms and a deodorizing tool.

[Conventional technology and its problems]

Offensive odors are a problem in human waste treatment plants, sewage treatment plants, waste treatment plants, sewage treatment plants, food factories, fish iliac treatment plants, pig farms, valve manufacturing factories, etc.

Generally, the main components of such malodorous components are ammonia, hydrogen sulfide, methyl sulfide, mercaptans, and amines. Contains sulfur atoms, such as methyl and mercaptan.

By the way, conventional deodorizing methods are broadly classified into physical methods and chemical methods. The former uses adsorption such as activated carbon, while the latter uses alkali or acid such as caustic soda or sulfuric acid to chemically neutralize hydrogen sulfide, ammonia, and amines, and neutralizes hydrogen sulfide, ammonia, and amines using an alkali or acid such as mercaptan and methyl sulfide. Components that do not undergo a neutralization reaction are deodorized by oxidation in the coexistence of an oxidizing agent such as sodium hypochlorite, chlorine, or potassium permanganate, and an alkali or acid.

However, with the physical method, running costs are high, regeneration or disposal of activated carbon is troublesome, and there is a risk of secondary pollution caused by foul-smelling gas during combustion. On the other hand, with chemical methods, in order to effectively deodorize, it is necessary to always take into account changes in chemical concentration and odor concentration, and since used chemical solutions are discharged in either acidic or alkaline regions, it is of course not possible to use them as is. Cannot be discharged and at least pHt
It must be discharged in one section, which requires complex equipment and maintenance.

Therefore, as a new deodorizing method that does not require high running costs, does not require complicated equipment or maintenance, and does not have to worry about secondary contamination, for example, Japanese Patent Application Laid-Open No. 57-20015
As in Publication No. 8, methods utilizing biochemical reactions of aerobic bacteria have been proposed.

This method involves bringing malodorous gases containing ammonia, hydrogen sulfide, methyl sulfide, mercaptans, amines, etc. into gas-liquid contact with a culture medium containing aerobic bacteria, thereby removing malodorous components from the malodorous gases with these bacteria and enzymes. The content is to make malodorous components odorless by oxidizing and reducing them.

However, as an example of the gas-liquid contact, a filling section is mentioned, but no specific example thereof is given. Also, JP-A-59-98
No. 717 discloses that the filler is a spherical or cylindrical filler with a diameter of 10+ nm to 35 mm made of a molded product such as wood chips, a porous molded product such as acetate nonwoven fabric, glass wool, asbestos, unglazed wood, wood chips, or synthetic resin; A plate-shaped one with a thickness of 10 mm to 35 mm is shown,
When such a packing is used, it has not been possible to secure a flow path for gas-liquid contact.

The purpose of the present invention is to eliminate the disadvantages of the conventional example, and when deodorizing using bacteria, it is inexpensive and easy to set up, effective gas-liquid contact is made, and disposal after use is not troublesome. An object of the present invention is to provide a deodorizing method and a deodorizing tool.

[Means for solving problems]

In order to achieve the above object, the present invention impregnates a paper-packed filter made of cardboard or the like with a large number of through-holes with an enzyme solution of a bacterium that has a deodorizing effect or a solution consisting of an enzyme solution and a bacterial solution, and then inserts the filter into a cassette. The gist of the system is to be installed in a foul-smelling air flow path as a body.

[Effect]

According to the present invention, malodorous air collides with the paper filter in the flow path and disperses into the small through holes thereof. These pores are continuous, and the foul-smelling air comes into contact with the pore walls as turbulent air, where it comes into contact with bacteria that act as deodorizers and is deodorized.

Additionally, paper filters can be easily replaced as cassettes, and used ones can be easily disposed of by composting or drying and then burning.

〔Example〕

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

First, to explain the deodorizing tool used in the method of the present invention, the paper filter 1 has a corrugated pole 2 as shown in FIG.
A plurality of corrugated paperboards 2 are stacked to form a block shape, and each corrugated paperboard 2 is arranged so that the small through holes 2a formed by the corrugated paper inside are all lined up in the same direction.

Note that in order to do this, productivity is improved if a long strip of corrugated paper is folded into an accordion shape and fixed with adhesive.

Further, as another embodiment, as shown in FIG. 2, the corrugated poles 2 may be rolled and stacked to form a cylindrical paper filter 1. Furthermore, for large items,
Relatively large through-holes other than the small through-holes 2a may be formed by omitting illustration or by assembling two or more sheets of corrugated paper in a honeycomb shape.

Such a paper filter 1 is impregnated with a bacterial enzyme solution that performs a deodorizing effect or a solution consisting of an enzyme solution and a bacterial solution (hereinafter referred to as a deodorizing solution), and the bacterial solution is one obtained by culturing bacteria in a liquid medium. Either directly utilized, or the culture cultured on a solid medium is dissolved in water.

On the other hand, the bacteria that carry out the deodorizing action include microorganisms selected from cellulose-degrading bacteria, filamentous fungi, sulfiding bacteria, atmospheric nitrogen-fixing bacteria, rhizobia, sulfur bacteria, actinomycetes, yeast, and pseudomonas bacteria. Depending on the situation, a plurality of microorganisms may 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.

In this way, the deodorizing tool of the present invention using the paper filter 1 impregnated with the deodorizing liquid can be used alone or in combination with another frame to form a cassette body with small through holes 2a in the malodorous air path. It is arranged so as to face the direction of air flow.

FIG. 3 shows an example of this. In the figure, 3 is an air supply pipe for malodorous air, and 4 is an exhaust tower to which this pipe is connected. The paper filter 1 is installed in the exhaust tower 4, for example, with a pull-out type upper and lower opening. It is housed in a case, and one or several pieces are arranged vertically as necessary. In the figure, reference numeral 5 denotes an exhaust fan, and its suction force causes the foul-smelling air that enters the tower 4 from the air pipe to pass through the paper filter 1 forcibly.

Then, inside the small through hole 2a, the filter 1 becomes turbulent.
The odor comes into contact with the walls of the room, where it comes in contact with bacteria that act as a deodorizer, and the odor is removed.

When a plurality of paper filters 1 are disposed in this way, it is possible to make each filter contain different types of bacteria, thereby achieving a composite deodorizing effect. In addition, a burner 6 is provided to promote the upward movement of air within the tower 4, and the air pipe 3
This may be used to heat the air coming out of the

On the other hand, the used paper filter 1 can be easily disposed of by burning or composting it.

FIG. 4 shows another example of the use of the present invention, in which it is applied to a chicken house.

A deodorizing room 9 having an air entrance and exit having a louver 8 is attached to a poultry house 7. The inside of this deodorizing chamber 9 is divided by a partition wall 10, and a pressure fan 11 is attached to the wall 10, while a paper filter 1 impregnated with the deodorizing liquid of the present invention is placed in front of or behind this louver 8. Arranged in cassette format. In the figure, 12
13 is a suction port on the roof, 13 is the floor on which the birds are placed, the deodorizing chamber 9 is preferably located at the bottom of the poultry house 7 so as to easily take in air containing bad smells that has passed through the poultry house, and a pressurized fan 11 is provided. is provided above the louver 8 so that the air entering the deodorizing chamber 9 from the louver 8 flows through the deodorizing chamber 9 as long as possible in order to pass through the pressurized fan 11.

In this way, the foul-smelling air passes through the louver 8 to the deodorizing chamber 9.
When going in and out of the room, it passes through a paper filter l to be deodorized.

By the way, FIG. 5 shows an experimental example of the present invention.

Water with algal blooms and putrefaction is put into a glass container 14 with a lid, and a foul-smelling gas is generated. Air is forcibly fed into this container 14 by a pressure pump 15, and these exhaust pipes are introduced into a flask 16.

The inlet of this flask 16 was blocked with a small paper filter 1 impregnated with the deodorizing liquid, and when the air coming out of the flask 16 was introduced to a person's nose through the vinyl cover 17, there was no odor. I couldn't feel it.

〔Effect of the invention〕

As described above, the deodorizing method and deodorizing tool of the present invention are inexpensive and easy to set up when deodorizing by bacteria, and moreover, effective air-liquid contact is achieved to efficiently deodorize work. can. In addition, disposal of used products is easy and there is no risk of secondary pollution.

[Brief explanation of drawings]

1 and 2 are perspective views showing examples of paper filters used in the present invention, FIG. 3 is an explanatory view showing an application example of the present invention, and FIG. 4 is an explanatory view showing another application example, FIG. 5 is an explanatory diagram showing an experimental example of the present invention. l...Paper filter 2...Cardboard paper 2a.
... Small through hole 3 ... Air pipe 4 ... Exhaust tower
5... Exhaust fan 6... Burner
7...Chicken house 8...°Gallery 9.
... deodorizing room 10 ... partition wall 11 ... pressure fan 12 ... suction port 13 ... floor 1
4...Glass container 15...Pressure pump 16...Flask 17
...vinyl cover

Claims (3)

[Claims] (1) A paper filter having a large number of through holes is impregnated with a bacterial enzyme solution or a solution consisting of an enzyme solution and a bacterial solution that performs a deodorizing action, and the filter is placed as a cassette in a foul-smelling air flow path. A deodorizing method characterized by: (2) A deodorizing tool characterized by comprising a paper filter impregnated with a bacterial enzyme solution or a solution consisting of an enzyme solution and a bacterial solution that exerts a deodorizing effect. (3) The deodorizing method and tool according to claims 1 and 2, wherein the paper filter is formed by laminating corrugated paperboards.