JPH0683829B2 - Microbial chemical wastewater treatment agent for vehicle toilets - Google Patents

Description

TECHNICAL FIELD The present invention relates to a wastewater treatment agent containing a microbial component. In particular, the present invention has high cleanliness containing microorganisms used in vehicle toilets, has no bad odor, and is pleasant in hue,
In particular, it relates to a microbial chemical wastewater treatment agent in which chemicals are combined so as not to adversely affect the growth of microorganisms.

[Prior Art] Conventionally, as toilet sewage treatment agents, (1) those which are chemically decomposed by using acid or alkali, (2) those which are immersed in a solution containing an enzyme or a microorganism to decompose Is being done. Of these, those that utilize enzymes or microorganisms are those that mainly decompose subtilis among the bacteria of the genus Bacillus (subtilis) and decompose organic waste, and contain 10 ⁶ to 10 ⁷ / g of bacteria. In addition, the coexistence of lactic acid bacteria and soil microbes is used. In addition, it further coexists with enzymes such as amylase, protease, and ribase.

Also, the one using sodium hypochlorite as a toilet treatment agent has a peculiar odor of the chemical itself,
It does not give a good impression and cannot decompose organic waste.

The subtilis of the genus Bacillus
s) Those mainly composed of bacteria have a small number of bacteria in order to decompose organic waste, and other coexisting bacteria do not promote the decomposition of waste. In addition, this fungus body is not suitable as a sewage treatment agent for a vehicle toilet because it itself becomes a source of malodor.

Further, a mixture of an enzyme such as amylase, protease, and ribase coexistent therein is not practical because the cost becomes high.

[Problems to be Solved by the Invention] Accordingly, the present invention solves the above-mentioned problems in which the effects of microorganisms and enzymes cannot be sufficiently exerted and the problem of malodor, and in particular,
It is an object of the present invention to provide a comprehensively effective sewage treatment agent capable of exerting the effects of aerobic bacteria and enzymes and at the same time chemically solving the components that cannot be treated by microorganisms and enzymes. That is, the present invention decomposes organic contaminants with bacteria, treats malodorous sources such as ammonia and hydrogen sulfide that cannot be decomposed with chemicals, and the amount of the perfume component may be small or may not be present. It is an object to provide a sewage treatment agent having an excellent effect of suppressing a bad odor.

[Means for Solving Problems] The gist of the present invention is to provide glutaraldehyde as a chemical agent component in an amount of 2 to 30 parts by weight based on 0.1 to 1.0 part by weight of a microbial component composed of a microorganism, a medium and a carrier. , Organic acid 6
-24 parts by weight, potassium sulfate 10-50 parts by weight and sodium hydrogen carbonate 3-12 parts by weight, soluble starch 40-80 parts by weight,
Characteristic is that 1 to 3 parts by weight of the pigment component and 20 parts by weight or less of the perfume component are blended, the organic components in the toilet wastewater are decomposed by microorganisms, and the components which cannot be completely decomposed by the microorganisms are treated with chemical components. Is a microbial chemical wastewater treatment agent for vehicle toilets. The microorganism component is composed of four or more kinds of microorganisms and various enzymes, and the microorganism is Streptococcus spp., A bacterium of the genus Bacillus.
cus), Enterobacter bacteria [Rhizopus bacteria, Nitrosomonas bacteria, Nitrobacte
r) of the genus] are preferred.

The microbial component is composed of three or more kinds of microorganisms, a medium and a carrier, and the microbial component is Streptococcus bacterium of the genus Bacillus.
It is preferable that it is a bacterium of the genus cus) or a bacterium of the genus Enterobacter [a bacterium of the genus Rhizopus]. As the medium, soybean dregs, plant stalks, leaves and the like, which are crushed and dried, and agricultural products wastes which have been pulverized and dried can be used. As the carrier, calcium carbonate, calcium silicate or the like is used, and the amount thereof is appropriately determined depending on the use.

The microbial chemical wastewater treatment agent for vehicle toilets of the present invention is a microbial component composed of a microorganism, a medium and a carrier, glutaraldehyde as a chemical drug component, organic acid, potassium sulfate and sodium hydrogen carbonate, soluble starch, a pigment component and It is a mixture of perfume ingredients in a predetermined ratio,
It decomposes organic components in toilet wastewater with microorganisms and treats the offensive odor generated with chemical components.

Examples of the microorganisms to be used according to the present invention include, for example, a bacterium of the genus Bacillus of 10 g per 1 g of the microorganism component.
⁹ 10 ¹¹ pieces, Streptococcus (Streptococcus) genus 10 ⁷ to 10 ⁹ bacteria, in which the 10 ⁷ to 10 ⁹ bacteria of Enterobacter (Enterobacter) genus is impregnated with the medium or carrier.

The applicants of the present invention are Japanese Patent Application Nos. 63-141520, 63-160961, 63-236.
No. 361 has been filed, but the former two have adsorbed malodorous sources with fragrances with high residual odor and zeolite powder in order to cover the malodors of the bacteria themselves and the malodor until the decomposition of filth ends. However, the amount of such a fragrance component added is large, which is a cost problem. Also, the last-filed patent invention requires handling because it requires soft drinks and lactic acid fermented products.

On the other hand, in the present invention, the organic filth is decomposed by a bacterium, and the odor source such as ammonia and hydrogen sulfide generated without being completely decomposed by the bacterium is treated with a chemical, and the odor of the bacterium itself is also treated with a chemical. Since the growth is controlled, that is, active growth is slightly suppressed, the amount of the fragrance component may be small or not necessary, and the bad odor that does not cause any problem in handling can be suppressed.

The microorganisms used in the microbial chemical wastewater treatment agent for vehicle toilets of the present invention are those containing bacteria of the genus Bacillus, bacteria of the genus Streptococcus, bacteria of the genus Enterobacter. . It is contained to decompose organic substances such as proteins and sugars other than urea.

Glutaraldehyde can be used as the chemical agent component used in the present invention. This is for suppressing the activity of bacteria a little and, as a result, suppressing urea decomposition and ammonia generation by bacteria in the toilet.

As the organic acid, succinic acid, tartaric acid, citric acid or the like can be used.

The soluble starch used in the microbial chemical wastewater treatment agent for vehicle toilets of the present invention, which can be a culture medium of the microorganisms used, is a food of the microorganisms used, a certain soybean cake or bran whose composition is clear to some extent, Agricultural product by-products such as bagasse are used, or starch, sugar (sucrose, fructose, lactose, etc.), wheat flour, agricultural waste powder, milk such as milk spoilage, and yeast extract or malt extract are used in some cases. And other chemicals can be used together.

Further, the organic acid as a chemical drug component used in the present invention,
It is for adjusting the conditions such as pH suitable for the microorganisms to be used so as to partially adsorb ammonia.

Potassium sulfate as a chemical agent component that can be used in the present invention is added to emphasize the dye, and sodium hydrogen carbonate is added to adjust the pH.

The methylene blue and the fragrance component used as the pigment component in the present invention are for maintaining cleanliness and substantially eliminating unpleasant odor.

The composition of the microbial-based chemical wastewater treatment agent for vehicle toilets of the present invention comprises a microbial component consisting of a microorganism, a medium and a carrier.
To 1.0 parts by weight, as chemical agent components, 2 to 30 parts by weight of glutaraldehyde, 6 to 24 parts by weight of organic acid, 10 to 50 parts by weight of potassium sulfate, 3 to 12 parts by weight of sodium hydrogen carbonate,
It comprises 40 to 80 parts by weight of soluble starch, 1 to 3 parts by weight of methylene blue as a coloring component, and 20 parts by weight or less of a perfume component. As a result, the organic components in the toilet sewage can be decomposed by microorganisms, and the generated malodor can be treated with the chemical components.

The microbial component composed of the microorganism, medium and carrier is 0.1
The reason why the amount is up to 1.0 parts by weight is that if it is less than 0.1 parts by weight, it is insufficient to decompose the waste, and if it exceeds 1.0 parts by weight, the cost becomes high and it is not economical.

If the amount of glutaraldehyde as the chemical agent component is less than 2 parts by weight, the malodorous source is insufficiently adsorbed, and if it exceeds 30 parts by weight, bactericidal properties appear and the above bacteria are sterilized.

If the organic acid is less than 6 as a chemical agent component, the malodor cannot be suppressed, and if it exceeds 24 parts by weight, the acidity becomes strong and the growth of bacteria is hindered.

If less than 10 parts by weight of potassium sulfate, the dye is not emphasized,
When it exceeds 50 parts by weight, the effect is not changed and the cost is simply increased. Further, if the amount of sodium hydrogen carbonate is less than 3 parts by weight, the pH adjustment is insufficient, and if it exceeds 12 parts by weight, the amount of alkali increases, which causes corrosion of equipment such as tanks. And, if the soluble starch is less than 40 parts by weight, it is not sufficient to grow the above-mentioned microbial cells, and if it exceeds 80 parts by weight, the above-mentioned microbial cells excessively grow and the malodor of the bacterium itself is generated.

Further, if less than 1 part by weight of methylene blue as a pigment component, the blue color is thin and lacks in cleanliness, and if it exceeds 3 parts by weight, the blue color is strong and the color remains during processing, causing pollution. . On the other hand, if the amount of the fragrance component exceeds 20 parts by weight, the effective fragrance is too strong, and conversely, it causes discomfort, which is not preferable.

As the coloring component, food additives Blue No. 1, Blue No. 2, etc. can be used in addition to methylene blue.

For the above reasons, the microbial chemical wastewater treatment agent for vehicle toilets of the present invention has the above-mentioned mixing ratio.

If the number of bacteria belonging to the genus Bacillus is less than 10 ^{9 in} 1 g, the ability to decompose organic substances such as glucose and sugars, starch and proteins is insufficient, and if it exceeds 10 ¹¹ , the malodor of the bacteria becomes remarkable. .

In addition, the number of bacteria of the genus Streptococcus (Streptococcus) is less than 10 ^{7 in} 1 g, sugars such as glucose, the decomposition of organic substances is insufficient, and when it exceeds 10 ⁹ , the coexistence with other bacteria becomes the upper limit. Become. See also Enteroba
If the number of bacteria of the genus cter) is less than 10 ^{7 in} 1 g, organic matter cannot be decomposed, and if it exceeds 10 ⁹ , the growth limit in coexistence with other species of bacteria will be limited.

As described above, the microbial chemical wastewater treatment agent for a vehicle toilet of the present invention can aim to decompose organic waste. And
Bacteria of the above content, by performing their respective functions,
In order to be able to decompose the components in each organic waste,
The treatment function can be maintained without deteriorating the function of treating organic waste.

In addition, the genus Bacillus used in the agent for treating microbial chemical wastewater for vehicle toilets of the present invention is particularly preferably Bacillus subtilis [IAM (Institute of Applied
Microbiology; Abbreviation for useful strain storage facility, Institute for Applied Microbiology, University of Tokyo; hereinafter also referred to by this abbreviation) 1168] is preferred, but in addition to this, Bacillus natto (B. natt)
o) [IFO (Institute for Fermentation Osaka: Abbreviation for Fermentation Research Institute; hereinafter abbreviated to this abbreviation)) 30
09] Bacteria, Bacillus coagulans [I
AM 1115], B. macerans [IAM
1243] may be used together.

Any bacterium belonging to the genus Streptococcus may be used, but S. faecalis [IAM 1119], Streptococcus cremorisu [IAM 1150] and lactis (IAM 1198). Etc. can be used.

Also known as Enterobacteriaceae
robacter), enterobacter Sakazaki (E. sakazakii) [IAM 12660], enterobacter
E. agglomerans [IAM 12659], Enterobacter aerogenes [IAM 118]
3 and 12348] and the like can be used.

Further, the microbial chemical wastewater treatment agent for vehicle toilet of the present invention may be added with a dye in order to enhance the commercial value. The pigment may be any of organic dyes such as acid dyes, basic dyes and direct dyes. Especially in the case of blue,
Methylene blue and Blue No. 1 and Blue No. 2 which are food additive colorants are preferable.

[Operation] The mechanism for removing adhered dirt of the microbial chemical wastewater treatment agent for vehicle toilets of the present invention is considered to be as follows.

That is, a bacterium of the genus Bacillus decomposes mainly starch and proteins in organic waste, and the sugars and hydrocarbons produced by the decomposition are treated with Streptococcus.
cus) cells, Enterobacter cells and Rhizopus cells are further decomposed rapidly to promote fermentation and remove malodorous substances. Then, Bacillus genus cells, Streptococcus genus cells, Enterobacter (Enter
Bacteria of the genus bacterium) and cells of the genus Rhizopus can decompose and remove organic waste.

The microbial chemical wastewater sewage treatment agent for vehicle toilet of the present invention,
Since it contains a large amount of Bacillus cells of 10 ⁹ to 10 ¹¹ / g, it decomposes organic waste in a short time, and decomposes sugars and hydrocarbons produced by decomposition into Streptococcus microorganisms. Enterobacter (Ent
It can be decomposed and fermented by microorganisms belonging to the genus erobacter).

The Enterobacter bacterial cells contained in the microbial chemical wastewater treatment agent for vehicle toilets of the present invention are decomposed,
It may secrete a yellow pigment during fermentation. This is an important phenomenon in the present invention because the microbial chemical sewage treatment agent for vehicle toilets of the present invention serves as a guide when its effect is exhibited.

Since the microbial chemical wastewater treatment agent for vehicle toilets of the present invention is particularly microbial-based, it contains few components that harm the human body and can be used with peace of mind.

Next, the microbial chemical wastewater treatment agent for vehicle toilets of the present invention will be described with reference to specific examples, but the present invention is not limited to the following examples.

[Example] As a microbial component, 7 Bacillus coagulans [IAM 1115] bacteria belonging to the genus Bacillus were used.
× 10 ⁹ / g, Streptococcus faecalis (IAM 11) of the genus Streptococcus
19] 1 × 10 ⁹ / g of bacteria, Enterobacte
r) Enterobacter Sakazaki (E. sakazakii)
[IAM 12660] A mixture of 60 parts by weight of bacterial cells and 40 parts by weight of soybean debris containing 1 × 10 ⁹ / g of bacteria was mixed,
It was dried with a spray dryer and pulverized. When analyzed for this microbial component, B. caegulans [IAM 1115] bacteria were 9 × 10 ⁹ cells / g, S. faecalis [S.faecalis] IAM 1119]
2.3 × 10 ⁹ bacteria / g, Enterobacter Sakazaki (E.sa
kazakii) [IAM 12660] bacteria had a composition of 1.6 × 10 ⁹ cells / g. 0.3 parts by weight of this microbial component, 5 parts by weight of glutaraldehyde as a chemical component, 7 parts by weight of tartaric acid, 16.5 parts by weight of potassium sulfate, 4 parts by weight of sodium hydrogen carbonate, 50 parts by weight of soluble starch, and 1.5 parts by weight of methylene blue as a coloring component. , As a fragrance ingredient, deodorant fragrance D-062
5.7 parts by weight of 8 (Cloister Kasei Co., Ltd.) was blended to obtain a microbial chemical wastewater treatment agent.

Next, assuming a train toilet, assuming that 0.15 parts by weight of the above-mentioned microbial chemical wastewater treatment agent is added to 100 ml of the first flood water and the train toilet is used for 4 days. , 1 sewage mixture of human urine and stool in a 19: 1 weight ratio
After adding 25 liters per day and shaking at 30 ° C., the hue and odor were examined for 4 days. The results are plotted and shown in Table 1 on the next page and the graph in FIG. That is, when the toilet sewage is treated with the sewage treatment agent of the present invention, the treated sewage,
It showed a clean hue of blue to green and had no bad odor.

After that, assuming the final treatment at the sewage treatment plant, activated sludge 1
When a 3-fold diluted solution of the waste water solution remaining after carrying out this test was mixed with parts by weight and aerated after 6 hours, the blue color disappeared.

[Advantages of the Invention] The microbial chemical sewage treatment agent for a vehicle toilet of the present invention provides a chemical sewage treatment agent containing microorganisms used for a vehicle toilet, and has the following remarkable technical effects. was gotten.

(1) Urea, which is a major component of urine, which is the main component of wastewater,
When it is decomposed by microorganisms, ammonia is generated, and it cannot be completely decomposed by the action of microorganisms to make it odorless.Therefore, it is captured by using chemical compounds such as organic acid and glutaraldehyde, and ammonia is removed. It exerts the effect of suppressing the bad smell caused by.

(2) Proteins other than urea, organic substances such as sugars are subtilis of the genus Bacillus, bacteria of the genus Streptococcus,
It is decomposed by Enterobacter bacteria.

(3) By adding glutaraldehyde, the activity of the bacterium is slightly delayed, and as a result, urea decomposition by the bacterium, that is, ammonia generation, is suppressed in the vehicle, and at the same time, the odor caused by the bacterium itself is also suppressed.

(4) Potassium sulphate emphasizes the pigment, sodium hydrogencarbonate is for pH adjustment, and starch is added as food for the mixed microorganisms, so the solution is a clean blue-green system. It has a neutral pH and can be treated with a small amount of microorganisms. Therefore, it is possible to increase the cleanliness of the vehicle toilet.

[Brief description of drawings]

FIG. 1 is a graph plotting elapsed time and generated ammonia and hydrogen sulfide gas in an experiment when treating toilet wastewater with the microbial chemical wastewater treatment agent for vehicle toilets of the present invention, and the treatment agent at that time. It shows the color of the appearance.

Claims (2)

[Claims] 1. To 0.1 to 1.0 parts by weight of a microbial component composed of a microorganism, a medium and a carrier, 2 to 30 parts by weight of glutaraldehyde, 6 to 24 parts by weight of an organic acid, and 10 to 50 parts of potassium sulfate as a chemical drug component. Parts by weight and sodium bicarbonate 3 to 12 parts by weight, soluble starch 40
~ 80 parts by weight, 1 to 3 parts by weight of the pigment component and 20 parts by weight or less of the fragrance component are mixed, and the organic components in the toilet sewage are decomposed by microorganisms, and the malodor generated is treated with the chemical component. A characteristic microbial chemical wastewater treatment agent for vehicle toilets. 2. The microbial component according to claim 1, wherein the microbial component is composed of four or more kinds of microorganisms and various enzymes, and the microorganism is a bacterium of the genus Bacillus or a bacterium of the genus Streptococcus. , Enterobacter (Enterob
The sewage treatment agent according to claim 1, which is a bacterium belonging to the genus acter [a bacterium belonging to the genus Rhizopus, a bacterium belonging to the genus Nitrosomonas, a bacterium belonging to the genus Nitrobacter].