JPH0330816A - Tray having drain hole and layer containing microorganism - Google Patents

Abstract

PURPOSE:To completely decompose offensively odorous gases or odor-causing sources by forming on the inner surface of a tray having a cylindrical part and water drain holes a layer contg. a specific mixture of microorganisms, glucose, milk sugar and inorg. porous body. CONSTITUTION:A microbic mixture of bacillus, streptococcus, rhizopus, nitrosomonas, nitrobacter, pseudomonas, aspergillus, glucose, milk sugar, ammonium chloride, inorg. porous body and binder are mixed together in predetermined proportions to prepare a paste. The lower surface of a plastic tray 1 having drain holes and the inner wall thereof are coated with the aforesaid paste and this coat is cured to solidify the paste. The microorganism contg. layer paste 4 applied to the inside is cured and the surface of the resulting microorganism contg. paste layer 5 is covered with a mesh 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a drainage hole plate having a microbial layer. That is, the present invention relates to a drain hole plate having a microorganism-containing layer that can be easily installed in a drain hole where bad odors are likely to be generated and has an effective deodorizing effect for removing bad odors.

[Problems to be solved by the prior art and the invention] Conventionally used drain hole plates are made of (υ stainless steel or ceramics, which improves corrosion resistance, has a smooth surface,
Many materials are used that make it difficult for dirt to adhere to them.

(In order to prevent bad odors from evaporating from inside the drain hole, some devices have been devised to physically cover it.) For example,
Some drains are designed so that when the water level rises, the perforated plate cover rises and the water drains out.

Particularly problematic odors are those that evaporate and are emitted from inside drainage holes, such as kitchens, baths, and men's restrooms.

In addition, with the techniques (1) and (2) above, in (1), it is essentially impossible to decompose the malodor that adheres to the surface of the drainage hole or the malodor that volatilizes and rises from inside the drainage hole. Regular or as-needed management is required, such as flushing detergent, and even with such measures, it was not possible to prevent the odor.

In addition, even in the case of (211), even with mechanical and structural improvements, it was not possible to completely prevent the generation of malodor sources that adhered to the surfaces of pipes and perforated plates over a long period of time.

Therefore, the present invention solves the problems that have not been solved by the conventional technology, namely, the problem of the generation of a bad odor that evaporates and occurs from the drain hole and the source of the bad odor that adheres to the inside of the drain hole plate over a long period of time. A drainage hole plate molded body made of microorganisms, a nutrient source, a porous material, a binder, and a plastic, and using microorganisms that can essentially decompose the source of bad odors through the action of the microorganisms and the organic matter produced by the microorganisms. The purpose is to provide

[Means for Solving the Problems] The gist of the present invention is to incubate Bacillus on the inner surface of a perforated plate having a cylindrical portion formed in advance.
Streptococcus genus, Streptococcus
cus) genus, Rhizopus genus, Nitrosomongs genus,
5 to 5,000 parts of glucose is added to 10 parts by weight of a mixture of microorganisms of the genus Nitrobacter, Pseudomonas, and Aspergillus.
Parts by weight, 5-5000 parts by weight of lactose, 1 part by weight of ammonium chloride
This is a drainage perforated plate having a fully formed microorganism-containing layer comprising: ~3,000 parts by weight, 100-5,000 parts by weight of an inorganic porous material, and 5-1,000 parts by weight of a binder. And preferably, Bacillus coagu
lans) [fAM 1115], Streptococcus lactis
s) [IFO12546], Rhizopus oryzae (R
hizopus oryzae) [IAM 6006]
, Nitrosomonas eurobaea
nas europaea) [IFo 14298],
Nitrobacter - Fist Agiris
[IFO14297], Pscudomonas n1
troreducens) [IFO12694] and Aspergillus ni
This is a drainage hole plate having a microorganism-containing layer using a mixture of microorganisms of gar) [IFo 4066].

The drainage hole plate molded body of the present invention is manufactured as follows. Namely, Bacillus genus, Streptococcus genus, Rhizopus fi, Nitrosomonas (
Genus Nitrosomonas, Nitrobacter (Ni
trobactcr), Pseudomonas (Pseud
omonas genus and Aspergillus (Aspergi
A mixture of microorganisms including bacteria belonging to the genus S. llus, glucose, lactose, ammonium chloride, an inorganic porous material, and a binder are mixed in predetermined proportions to prepare a paste.

Next, as shown in FIG. 1A, the paste is coated on the back and inner surfaces of the plastic crevice @1 that has been molded in advance to a thickness of approximately 5 to 7 cm. The coated paste is cured by curing for 36 hours at a temperature below 40°C, preferably in the range of 20-40°C.

In this case, the structure of the drainage hole plate used in the present invention includes a perforated plate part 2 (diameter d) having a large number of small holes with a diameter a, and a cylindrical body part 3 (inner diameter b, outer diameter C) provided below. It is a defective thing that has the following.

As shown in the schematic cross-sectional view of FIG. 1B, the microorganism-containing paste 4 coated on the inside is cured. Furthermore, as shown in the schematic cross-sectional view of FIG. 1C, it is also suitable to line the surface of the obtained microorganism-containing paste layer 5 with medullary.

The drainage hole plate having the microorganism-containing layer of the present invention is shown in FIG.
It has a structure as shown in the figure, and contains the above-mentioned microbial mixture, enzymes and organic acids produced by the reaction, and an organic adhesive insoluble in water fixed in the micropores of the porous body. It has a coating layer.

That is, a microbial layer consisting of (microorganisms) + (enzyme produced by reaction) + (organic acid) + (organic adhesive insolubilized in water) can be fixed in the micropores.

Therefore, the drainage port @1 having the microorganism-containing layer of the present invention fixes and decomposes sources of bad odors such as ammonia that volatilize from the surface of wastewater or sewage, and at the same time is always in a separate state from the sewage, preventing bad odors or wearing a mask. can be effective. This effect is thought to be achieved by the following mechanism.

That is, first, when the drainage hole plate 1 of the present invention having a microbial layer comes into contact with wastewater, the microorganism-containing layer 5 partially intersects with the wastewater, and the enzymes and organic acids in the microorganism WJS are eluted into the wastewater. It extremely quickly neutralizes and fixes foul-smelling gases that volatilize from the surface of wastewater.

Next, the water that has entered the microorganism-containing layer 5 of the drainage perforated plate of the present invention comes into contact with the microorganisms, so the microorganisms are activated and multiply and grow using the coexisting glucose, lactic acid, and ammonium chloride as nutrients, and the lactic acid It produces organic acids and enzymes such as citric acid and citric acid. This product can neutralize and decompose the source of bad odors on the surface of wastewater, so it can be used from the beginning for a long period of time.
It can suppress bad odors.

Furthermore, some of the microorganisms used decompose organic matter in active water and make the organic matter that is a source of bad odors odorless. In particular, over the long term, Nitrosomonas microorganisms
8. Microorganisms of the genus Nitrobacter can convert NO8 to NO1, and microorganisms of the genus Pseudomonas can convert NO1 to N.

Therefore, in the drainage perforated plate of the present invention, a certain blended microorganism-containing layer is used under extremely aerobic conditions by entraining air. It can be produced in moderate amounts, and can effectively prevent bad odors and treat sources of bad odors. In other words, it can be said that the blending composition and the contact reaction conditions were extremely well matched.

Furthermore, ammonia as a source of malodor is
Due to the combination of Nitrosomonas europae, Nitrobacter agilis, and Pseudomonas nitroreducens, Nitrosomonas europae produces ammonia→NO* −
, Nitrobacter agilis is N01-→N0s-,
Pseudomonas nitroreducens is NO3-→N
The action of these microorganisms is strengthened in the presence of the additives and oxygen of the present invention, and these conversion rates are improved, compared to conventional drainage holes. Odor prevention and decomposition have become more efficient.

The microorganisms to be contained in the microorganism-containing layer of the present invention include (1) Bacillus genus, especially Bacillus subtilis (B, 5ubtilis) [IAM
(Institute of Applied Micro
obiology; Abbreviation for the Preservation Facility for Useful Bacterial Strains, Institute of Applied Microbiology, University of Tokyo; hereinafter referred to as this abbreviation) 1168
] is suitable, but in addition to this, Bacillus natto (B
, natto) [IFO (Institute for
Fermentation 0saka: Abbreviation for Fermentation Research Institute; hereinafter referred to as this abbreviation) 3
009], Bacillus coagulus (B, coagul
ans) [IAM 1115], Bacillus v. macerans (B, macerans) [IAM 1243 may also be utilized.

■Streptococcus
) microorganisms of the genus Streptococcus faecalis (S, faecalis) [IAM
1119], Streptofuccus cremoris (S, c
resoris) [IAM 1150] and Streptococcus lactis (5,1actis) [IFO1
2546] etc. can be used.

In addition, one type of mold (3) Rhizopus
Microorganisms of the genus Rhizopus formosaensis include Rhizopus formosaensis.
) [IAM 62501, Rhizobium oryzae (Rh
Rhizopus oryzae) [IAM 6006] Rhizopus p.
seudochinensis) [IAM 6042]
etc. can be used.

(Nitrosomonas)
Microorganisms of the genus include Nitrosomonas eurobaea (
N, europaea) cIFo 14298], etc. can be used.

(9 Microorganisms of the genus Nitrobacter include Nitrobacter agilis (N,
is) [IFO14297], etc. can be used.

(e) Microorganisms of the genus Psaudomonas include Pseudomonas nitroreducens (P, n1troreducens) [IFO1269
4], Pseudomonas carrioff (Squirrel (P, car)
yophilis) [IFO12950], Pseudomonas stutzeri (P. 5tutzeri) [I
FO3773 can be used.

and (7) Aspergillus
) microorganisms of the genus Aspergillus oryzae (
E. oryzae) [UFO4176], Aspergillus niger (E. niger) [IFO4066]
, Aspergillus usamii (E, usamii) [I
Fo 6082], etc. can be used.

(1) Bacillus coagulans (Bacillus coagulans)
oagulans [IAM 1115], (Streptococcus lactis
actis) [IFO12546], mouth) Rhizopus
Rhizopus oryzae [IAM
6006], (Nitrosomonas eurobaea)
onasauropaea) [IFo 14298],
(9 Nitrobacter agilis)
ragilis) [IFO14297], (6) Pseudomonas nitroreducens (Pseudoa + on
as n1troreducens) [IFO1269
4] and (7) Aspergillus niger (Aspergillus
A combination of microorganisms such as S. illus niger) [IFO4066] is preferred.

The present invention provides a drainage hole plate having a microorganism-containing layer containing microorganisms of these seven genera to quickly decompose and remove bad odors. That is, the combination of a, (1), (ri, and (3)) converts lactose into lactic acid.Lactic acid has aromatic properties and, as an organic acid, has the effect of neutralizing bad odors.Organic acid by microbial conversion The production of (1), (2), 0) is cost-effective.
These microorganisms also decompose organic matter that causes bad odors.

b, (4), (5>, (e) has the effect of long-term decomposition of ammonia, which is the source of the initial bad odor. That is, (Ammonia → No!, (5) is N08-N Ox (2) converts NO3 to N, converting the bad odor, that is, ammonia, into an odorless gas.

The microorganisms in c. (7) convert sugars into organic acids such as citric acid and contribute to the effect of neutralizing bad odors. Production by microbial conversion is advantageous in terms of cost since no energy is required.

- In addition, the microorganisms (1) to (7) produce enzymes such as amylase and protease, and contribute to the neutralization and decomposition of malodor sources.

Nitrosomonas eurobaea (Nitros).

5onas europaea) [IPo 14298
] microorganism, Nitrobacter agilis (Nitrob
Pseudomonas nitroreducens (Psa.
udomonas n1troreduccns) [I
Fo 12694] microorganisms contribute to the decomposition of ammonia, which is a source of malodor, and in combination have the effect of removing the malodor of ammonia. That is, Nitrosomonas eurobaea (Nitrosomonas eur)
opaea > [IFO14298] is ammonia → N01-, Nitrobacter agilis (Nit
robacter agilis) [IFO14297
] microorganisms are NO3-→No,-, and Pseudomonas nitroreducens (Pseudomonas nitroreducens).
s n1troreducens) [IFO12694
] The microorganisms are N.

, -→N, to suppress the bad odor caused by ammonia.

Streptofuccus lactis
ococcus 1actis) [IFO12546 microorganisms, Rhizopus oryzae
oryzae) [IAM 6006], and Aspergillus ni
ger) [IFo 4066] convert sugars into organic acids such as lactic acid and citric acid, and produce enzymes (amylase, protease, lipase, etc.), contributing to the decomposition of malodors.

As described above, by the microorganisms (1) to (7) fulfilling their respective functions, they can decompose and dissolve bad odors and sources of bad odors from wastewater and sewage, and can also partially convert them into aromatic substances.

As described above, in the drainage hole plate having a microorganism-containing layer of the present invention, these 7Mk microorganisms are mixed, and the aim is to decompose malodorous components in a comprehensively balanced manner.

The above seven genera of microorganisms decompose malodorous components by fulfilling their respective functions. Moreover, the malodor of the malodor source can be masked due to the fragrance component having an aroma produced at the same time.

For 10 parts by weight of this microbial component, 5 to 5 parts of glucose
000 parts by weight, 5 to 5,000 parts by weight of lactose, and 1 to 3,000 parts by weight of ammonium chloride to complete the malodor decomposition effect.

Glucose serves as a medium and nutrient source for microorganisms, and is converted into organic acids. If the glucose is less than 5 parts by weight,
It does not effectively promote the growth of microorganisms, and if it exceeds 5,000 parts by weight, Aspergillus niger (Aspergillus niger)
lus niger) [IFO4066] and Bacillus coagu
lans [IAM 1115, Pseudomonas n1tr
orducens) [IFO12694], the number of microorganisms has increased so much that it is impossible for them to coexist with other types of microorganisms.

Lactose acts as a medium and a source of influence for microorganisms (1) to (3) in particular, and is converted into lactic acid. It is what it is. If lactose is less than 5 parts by weight, it will not effectively promote the growth of microorganisms, which is inconvenient; if it exceeds 5,000 parts by weight, Bacillus coagulans (1) to (3) and Pseudomonas nitro Reduces (Pseudomonas)
The number of microorganisms such as S. nitroreducens increases so much that it becomes impossible for them to coexist with other types of microorganisms.

Ammonium chloride is a nitrogen-based nutrient source during the growth and proliferation of microorganisms.
00 parts by weight.

Ammonium chloride is 1! If it is less than 300 m
If it exceeds 0 parts by weight, the resolution of bad odors will be reduced and it will cause ammonia odor.

Furthermore, the inorganic porous material to be used may be a material such as pearlite, vermiculite, or a foamed material of calcium silicate, but one having continuous pores is preferable, and the amount is 100 parts by weight to 10 parts by weight per 10 parts by weight of the microbial component. 5000f
Add i parts. If it is less than 100 parts by weight, the amount of microorganisms and nutrient sources will increase relatively, but the effect will not change. If it exceeds 5,000 parts by weight, the concentration of microorganisms will be relatively small and the desired effect will not be obtained.

With such a combination, the drainage perforated plate for sewage treatment of the present invention having the above-described structure can also be obtained.

The binder, ie, the organic adhesive used in the present invention, is used to bond microorganisms, nutrients, and inorganic porous bodies and mold them into various shapes. Considering the heat resistance of microorganisms, 40
Those that harden at °C are preferred. Specifically, an adhesive based on resin such as acrylic, vinyl acetate, or epoxy, or an emulsion thereof is used. If it is less than 5 parts by weight, the adhesive ability will be insufficient and molding will not be possible, and if it exceeds 1000 parts by weight, there is no point in increasing it any more, and the concentration of the binder will become relatively high, resulting in a decrease in viscosity. Too much and it becomes difficult to mold.

The drainage hole plate of the present invention is preferably made of plastic, such as injection molded material of polyethylene, polypropylene, polystyrene, polyethylene-vinyl acetate copolymer, or the like. Although various shapes can be considered, the present invention includes
It is preferable that a cylindrical vibrator 3 is connected to the blade of one plate portion 2, as shown in FIG. 1A. That is, this is because the surface area of the paste layer 4 containing microorganisms can be increased, making it easier to come into contact with waste water and the source of the bad odor generated.

The drainage hole plate having a microorganism-containing layer of the present invention is suitable for decomposing malodorous components in a short period of time, but is also suitable for use over a long period of time.

Next, the drainage hole plate having a microorganism-containing layer according to the present invention will be explained using a specific example, but the present invention is not limited to the following example.

[Example] Bacillus coagulans (B, Coag) of the genus Bacillus
ulans) [IAM 1115], 0.25 g of Streptococcus lactis (S, 1actis) of the genus Streptococcus [
IFO12546] to 0.20g J Zorbs (Rh1z
opus) fi Nori Zorbus Oryza Technique (R, ory
zae) [IAM 6006] o, io (, Nitrobacter of the genus Nitrobacter)
・Agynos (N, agilis) [IFo 14297
], 0.07 g of Nitrosomonas
nas ) lK Nitrosomonas eurobaea (N,
europaea) [IFO14298] to 0.09, Pscudomonas n1troreducens of the genus Pseudomonas
s > [IFO12694] to 0°09g and Aspergillus of the genus Aspergillus.
niger (E, niger) [IFo 4066] to 0.
Weigh out 20g, add 5.5g of glucose, and 8.0g of lactose.
g, ammonium chloride 1.0g, vermiculite 11
0g, blended with acrylic emulsion 25&, 20°C
Mix for 40 minutes at
The back and inside surfaces of a polyethylene molded product with the structure shown in Figure 1A, which was molded to fit the kitchen sink drain hole and the men's toilet bowl urinary hole with an inner diameter of 3 cm, were made to have a thickness of 5I.
Coated with the created paste. Then, at 40℃
After curing for 0 hours, the paste was cured, and two types of drain hole plates were prepared: a kitchen sink drain hole and a urinary hole for a men's toilet bowl.

Next, we conducted a long-term test comparing the perforated plate with conventionally used perforated plates (the one for the kitchen sink drain hole is made of stainless steel, and the one for the men's toilet urinal hole is made of ceramic).

[Test Results] The drainage holes having the microorganism-containing layer of the present invention were installed in six houses, and the conventional drainage holes were installed in two houses, and observations were continued for two and a half years.

The results are shown in Table 1 along with various conditions.

The official RT test shown in Table 1 has a 6-level evaluation, and was conducted based on the following criteria.

(No odor) O<1<2<3<4<5 (Odor) Also, the ammonia concentration is the result of measurement using a clay type ammonia detection tube. As is clear from the results shown in Table 1, some folds were felt in the data for the men's toilet bowl, but overall, the drainage hole plate of the present invention was overwhelmingly superior to the conventional product. It has been found that it completely prevents bad odors.

[Effects of the Invention] The drainage hole plate having a microorganism-containing layer of the present invention has, firstly,
When it comes into contact with sewage, wastewater, or urine, the microorganism-containing layer coated on its surface is activated, almost completely decomposing and neutralizing the foul-smelling gas and odor sources that volatilize from the bottom of the dish or adhere to the back and sides of the perforated dish. can be harmonized.

Second, the microorganism-containing layer coated on the back or inner surface of the perforated plate becomes water droplets due to its surface tension when wastewater, sewage, or urine flows, and it often stays on the back surface or inside the plate. Since the sides are moist, microorganisms are fully activated,
In response to the supply of coexisting nutritional sources, it proliferates, secretes enzymes (amylase, propase, etc.), converts coexisting sugars (glucose and lactose) into organic acids such as lactic acid, and some of the pores of the porous material are converted into organic acids such as lactic acid. This has the effect of being able to be leached onto the surface of the coated surface through the process.

Thirdly, the drainage hole plate of the present invention can be used under such circumstances.
The source of bad odor that volatilizes and rises from below becomes odorless through the action of the activated microorganisms, generated enzymes, and organic acids. In particular, over a long period of time, urine, etc., generates a source of bad odor called urinary stone on the back and inner surface of the perforated plate due to its surface tension, but such substances can also be removed using the drainage hole port 1 of the present invention. In addition, it is possible to completely prevent the build-up of foul-smelling limescale caused by kitchen wastewater.

Fourth, furthermore, in the long term, Nido [1 Somonas spp.
Ammonia → NO! , Nitrobacter bacteria are NO1 →
No. 1, Pseudomonas bacteria can also convert NOs to N, an odorless gas.

Furthermore, fifthly, the drainage hole plate of the present invention can deodorize the source of bad odors contained in wastewater and urine using a bioreactor, making it an industrially extremely useful malodor treatment device. It has been provided.

[Brief explanation of drawings]

FIGS. 1A, B, and C are schematic diagrams showing the structure of a drainage hole plate having a microorganism-containing layer according to the present invention and the method for manufacturing the same.

Claims (2)

[Claims] (1) Bacillus, Streptococcus, Rhizopus, Nitrosomonas, and Nitr
osomonas), Nitrobacter (Nitrob)
genus Pseudomonas, Pseudomonas
as) genus and Aspergillus (Aspergillus
), 5 to 5000 parts by weight of glucose, 5 to 5000 parts by weight of lactose, 1 to 3000 parts by weight of ammonium chloride, 100 to 5000 parts by weight of an inorganic porous material, and 5 to 1000 parts by weight of a binder. 1. A drainage perforated plate having a microorganism-containing layer, characterized in that the microorganism-containing layer is formed by weight parts. (2) In the drainage hole plate according to claim 1, Bacillus coagula
ns) [IAM 1115], Streptococcus lactis
[IFO 12546], Rhizopus oryzae (Rh
izopus oryzae) [IAM 6006],
Nitrosomonas europaea
as europaea) [IFO 14298], Nitrobacter agilis
gilis) [IFO 14297], Pseudomonas nitroreducens
troreducens) [IFO 12694] and Aspergillus niger
A drainage hole plate having a microorganism-containing layer using a mixture of microorganisms containing microorganisms of M. iger) [IFO 4066].