JPH11253540A - Deodorizing material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a decomposition to an olfactory threshold value or lower, and also, facilitate a disposal by a method wherein this deodorizing material is constituted of a deodorizing material wherein ferrous sulfate is contained in a cellulose based substance or its molded member, and the deodorizing material is formed by oxidizing into a basic ferric sulfate, and a deodorizing material wherein a basic substance is contained in a cellulose based substance. SOLUTION: After containing ferrous sulfate in a cellulose based substance such as pulp or its molded member, the ferrous sulfate is oxidized into a basic ferric sulfate, and a first deodorizing material is formed. Also, by containing a basic substance such as sodium carbonate in the same cellulose based substance, and a second deodorizing material is formed. The first deodorizing material and the second deodorizing material are placed on a malodorous substance by making the second deodorizing material an internal layer in such a manner that, e.g. the weight ratio may become a ratio of approx. 7:3. By this method, odorous components such as mercaptans and hydrogen sulfide can be almost totally decomposed, and a state which cannot be detected by a gastic reactor is presented. Also, an odorless state wherein functional odors cannot be recognized as well, can be presented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing material useful for deodorizing human and animal excrement and body odor, for deodorizing domestic and collective drainage, and for decaying odors of spoiled foods, and for deodorizing decomposed odors caused by microorganisms. It is about.

[0002]

2. Description of the Related Art Conventionally, as a deodorizing material for human and animal excrement, there is a deodorizing material disclosed in Japanese Patent No. 1642383. This deodorizing material is obtained by impregnating ferrous sulfate into a fibrous material and oxidizing the ferrous sulfate to basic ferric sulfate. It is intended and has a considerable effect on the deodorization of the excrement. However, the excretion and other malodorous components are reduced to an odorless state below the olfactory threshold (concentration value ppm at which humans can sense odor). In order to decompose, an extremely large amount had to be required.

That is, in order to investigate the above-mentioned causes, various confirmation tests were conducted on the above-mentioned conventional deodorizing material.
Although this deodorizing material was effective in deodorizing ammonia and amines, it was found that the odor remained due to its low deodorizing performance against methyl mercaptan and hydrogen sulfide.

[0004] Further, the odor generated in the final treatment plant for industrial waste and the odor generated in the food processing industry and other industries have different component compositions, and the odor components also differ depending on the type of putrid odor. It is common.
Therefore, development of a deodorizing material suitable for an odor component is desired.

[0005]

DISCLOSURE OF THE INVENTION In view of the above-mentioned prior art, the present invention provides a conventional fibrous material or a molded member of fibrous material containing ferrous sulfate and converting the ferrous sulfate to a base. By using the deodorizing material oxidized to the ferric sulfate as the first deodorizing material and combining it with an appropriate second deodorizing material, the unpleasant odor can be decomposed to an odorless state below the olfactory threshold, and It is an object of the present invention to provide a deodorizing material that can be easily treated as waste after use.

[0006]

Means for Solving the Problems The object of the present invention, which has been made to solve the above-mentioned problems, is to provide a deodorizing material of the present invention in which ferrous sulfate is contained in a fibrous material or a fibrous material molded member. It comprises a first deodorizing material made by oxidizing ferrous iron to basic ferric sulfate and a second deodorizing material made by adding a basic (alkaline) substance to a fibrous material. Things.

That is, the inventors of the present invention have repeatedly studied on the deodorization of the malodor caused by mercaptans and hydrogen sulfide, which are the above-mentioned malodorous components, and as a result, a fibrous material impregnated with a basic substance was used. When a certain second deodorizing material is used in combination with the first deodorizing material, the present inventors have found that the fibrous material impregnated with the basic substance exhibits an excellent effect on deodorizing mercaptans and hydrogen sulfide, and the present invention Was achieved. It is considered that the excellent deodorizing effect as described above was obtained by combining the chemical deodorization of the first deodorizing material and the deodorization of the second deodorizing material by a chemical neutralization reaction.

Thus, the fibrous substance used in the present invention includes pulp, wood flour, natural cotton or regenerated fibrous fibers, fine fibers discharged during paper production, or plate-like or columnar wood. .

The basic substance to be impregnated into the fibrous substance in the second deodorizing material is a particulate material containing at least one of sodium carbonate, calcium carbonate, calcium hydroxide, sodium hydroxide and potassium hydroxide. Alternatively, it is desirable to use a powdery basic metal salt as a main component.

Further, as the fibrous material molded member, both the first deodorizing material and the second deodorizing material may be formed in the shape of a sheet, a honeycomb, a massive particle, a cotton, a cloth, or a kimono. Can be

The deodorizing material of the present invention can improve the deodorizing performance by changing the ratio of the amount of the first deodorizing material and the amount of the second deodorizing material depending on the malodorous component to be deodorized. The area can be used as a deodorant for general household, industrial and industrial waste. For example, the use rate of the second deodorizing material is 10 to 20% for general household use, 10 to 30% for human and animal excrement and odor of decomposition products decomposed by microorganisms, For the odor, 10-60% is the effective deodorizing area, and in any case, if the content of sulfur-based malodorous substances such as mercaptans and hydrogen sulfide is high, increase the amount of the second deodorizing material. Excellent deodorizing effect can be obtained.

[0012]

Next, an embodiment of the present invention will be described. Example-1 A first deodorizing material (A) formed by forming pulp in a lump,
A second deodorizing material (B) containing pulp formed in a lump and containing a basic substance is mixed with a deodorizing material (B) in an inner layer on feces and putrefactive garbage which are malodorous substances at a weight ratio of 7: 3. In the same manner, when (A) was covered as an outer layer and the residual odor component was measured using a gas tech detector, the odor components of mercaptans and hydrogen sulfide were almost completely decomposed. Almost no odor was found, no functional odor was found, and no odor was found. On the other hand, when the above results were compared, the odor before the treatment of the offensive odor substance and the residual odor when deodorized using only the first deodorizing material (A) were as shown in Table 1. Such a result was obtained because the deodorizing material of the present invention added the deodorizing effect by the chemical neutralization reaction of the deodorizing material (B) to the chemical deodorizing effect of the deodorizing material (A).

[0013]

[Table 1]

Example 2 The same deodorizing materials (A) and (B) as in Example 1 were prepared.
A deodorization test was conducted for general household toilets. That is, Example-
Similarly to 1, the odor before treatment of the toilet and the residual odor when deodorized using only the first deodorizing material (A) and the residual odor when deodorized using the prepared deodorizing material of the present invention described above. And were measured with a gas tech detector and compared, as shown in Table 2.

[0015]

[Table 2]

There are many types of odors in general households, such as odors generated from toilets, garbage, and clogs, body odors of humans and pets, and odors at the time of meals. , Ammonia, amines, mercaptans, hydrogen sulfide, aldehydes and indoles. The point of the presence or absence of the deodorizing effect is how to remove the above-mentioned odor components.
Among the odors, a particularly typical odor is the odor emitted from the toilet. Therefore, a deodorization test was performed on the odor of the toilet as described above. In this test, the deodorizing material (A) was able to obtain an excellent effect on the odor caused by ammonia and amines. It was confirmed that the deodorizing material (B) can obtain a better deodorizing effect for deodorizing odors caused by mercaptan and hydrogen sulfide.

On the other hand, the bad odor components (unit ppm) when the vaccum carcass discards manure are ammonia: 50-100 methyl mercaptan: 20-30 hydrogen sulfide: 80-1100 carbon dioxide gas: 1300-1500, In the case of these deodorizations, an excellent deodorizing effect can be obtained by using the deodorizing material (A) in combination with the deodorizing material (A). This is because the neutralization reaction of the deodorizing material (B) with an alkali component is performed on the sulfuric acid malodor, and the deodorizing material (B) comes into contact with the deodorizing material (A) in a decomposable state to enhance the chemical deodorizing effect. .

[0018]

The present invention is as described above, and the material for deodorization of the present invention is characterized in that ferrous sulfate is contained in a fibrous material or a molded member of fibrous material, and the ferrous sulfate is converted to basic ferrous sulfate. It consists of a first deodorizing material made by oxidizing to ferrous iron and a second deodorizing material made by adding a basic (alkaline) substance to a fibrous material, and using these two deodorizing materials in an appropriate combination. Thereby, the malodorous component can be deodorized extremely effectively by the chemical deodorizing function of the first deodorizing material and the neutralization reaction of the second deodorizing material with respect to the sulfuric acid malodorous component.

Therefore, in recent years, it is possible to comply with the regulation values of odorous substances and health-inhibiting substances in the air, especially according to the Odor Control Law and the Occupational Safety and Health Regulations, and there is a great deal of contribution to the improvement of living and working environments. .

In addition, if the deodorizing material of the present invention is used for deodorizing bedding and sickrooms of so-called bedridden elderly people who have become a social problem in recent years, effective deodorization can be performed very easily.

Furthermore, since the deodorizing material of the present invention can be produced at extremely low cost by using recycled pulp or the like, it is possible to improve the living environment and working environment at low cost, and the deodorizing effect is reduced by long-term use. Then, it becomes neutral area (around pH 7.0), so it can be treated like general household waste.

Claims (4)

[Claims] 1. A first deodorizing material produced by adding ferrous sulfate to a fibrous material or a molded member of a fibrous material, and oxidizing the ferrous sulfate to basic ferric sulfate; And a second deodorizing material produced by adding an (alkali) substance to a fibrous material. 2. The deodorizing material according to claim 1, wherein the fibrous substance is pulp, wood flour, natural cotton, regenerated fibrous fiber, fine fiber discharged during paper production, or plate-shaped or columnar wood. . 3. The deodorizing device according to claim 1, wherein a basic compound such as sodium carbonate, calcium carbonate, calcium hydroxide, sodium hydroxide, potassium hydroxide or the like is used as the basic (alkaline) substance in the second deodorizing material. Lumber. 4. A molded article made of a fibrous material, wherein the fibrous material is formed into a sheet, a honeycomb, a massive particle, a cotton, a cloth or a kimono. Deodorizing material according to any of the above.