JP7245461B2 - Room odor reduction construction method - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act In the publication, published on April 24, 2018, in the 35th Air Purification and Contamination Control Research Conference Proceedings, the actual state of odorous substance pollution in houses and measures to reduce it Research on technology (part 2) and deodorization technology (1) using a new type of air purifier were released.

Application of Article 30, Paragraph 2 of the Patent Act In the publication, published on April 24, 2018, in the 35th Air Purification and Contamination Control Research Conference Proceedings, the actual state of odorous substance pollution in houses and measures to reduce it Research on technology (Part 3) and deodorization technology (2) using a new type of air purifier were released.

Application of Patent Act Article 30, Paragraph 2 com, address https://www. suma inonio konzetsu. com/ posted an overview of the room odor reduction construction method.

TECHNICAL FIELD The present invention relates to a room odor reduction construction method, and more particularly to a room odor reduction construction method in renovation work.

Conventionally, the problem of odors in buildings has become a problem as a major hindrance to marketing and sales activities for rental and real estate properties. Such problems in the living environment include not only acetaldehyde and formaldehyde, which cause sick house syndrome, but also pet odors, cigarette odors, and other household odors, waste-derived odors such as garbage disposals, and death odors due to an increase in solitary deaths. There is a problem that such odors often remain even after the original owner has moved out.

For this reason, there are cases in which deodorizing and disinfecting agents are sprinkled in the remodeling after moving out, and materials in the contaminated areas are replaced.
However, it is not possible to completely remove the odor of the odorous substance with the chemical alone, and there are problems such as the use of the chemical until the odor disappears, which takes time and costs.

In addition, the ozone deodorizing method is one of the mainstream deodorizing methods at present. Furthermore, although it has a deodorizing effect in the air, there are also reports that the offensive odors that permeate the walls and floors cannot be completely removed, causing the odorous substances to scatter again. (Patent Document 1)

Japanese Patent Laid-Open No. 11-33090

The present invention has been made in view of the above problems, and an object thereof is to provide an odor-reducing construction method for a room that is excellent in deodorizing and deodorizing properties and economical efficiency.

The odor reduction construction method for a room of the present invention includes a first measurement step of measuring an odor causative substance and a first odor reduction step of removing the causative substance, and the first odor reduction step includes removing the material and/or burnt parts; spraying the entire room with a deodorizing and disinfecting agent selected from at least one type; and baking out at least one time or more after spraying the deodorizing and disinfecting agent. and a step of adsorbing the odor-causing substance volatilized by the bake-out by an adsorption means, wherein the first odor-reducing step is based on the amount of the causative substance obtained from the first measuring step. and having a second measurement step of re-measuring the odor-causing substance after the first odor reduction step, and attaching a laminated sheet having gas barrier properties to the walls, ceiling, and floor of the room without any gaps. It is characterized by having two odor reduction steps.

In the room odor reduction construction method of the present invention, the deodorant disinfectant used in the first odor reduction step is sodium hypochlorite, citric acid, acetic acid, sodium hydrogen carbonate, hydrogen peroxide, and sodium sesquicarbonate. is preferably selected from

In the room odor reduction construction method of the present invention, the adsorption means is preferably an air purifier equipped with activated carbon.

In the odor reduction construction method for a room of the present invention, the second odor reduction step includes the step of attaching the gas barrier laminate sheet to the wall surface, ceiling, and floor of the room without any gaps, and It is preferable to have a step of wrapping the corners with modified silicone and a step of combining them.

ADVANTAGE OF THE INVENTION According to the present invention, it is possible to provide an odor reduction construction method that can quantitatively identify the causative agent of odor and reduce the causative agent to the extent that the gas-barrier laminated sheet can block the odor just enough. can.
In addition, since the present invention uses a laminated sheet having gas barrier properties for finishing, most of the new odor-causing substances reach only the laminated sheet, and when renovation work is performed again, the time and cost required for deodorizing are increased. It has the advantage of being suppressed.

Moreover, according to the present invention, by using activated carbon for the adsorption means, there is an effect that odors are not dispersed more than necessary during renovation work.
Furthermore, according to the present invention, by using modified silicone together, it is possible to fill gaps between complex structural parts of houses and laminated sheets having gas barrier properties, so that a stronger deodorant effect can be obtained.

FIG. 4 is a diagram showing basic steps in an embodiment of the present invention; FIG. 4 is a diagram showing an example of chemical analysis in an example of the present invention; FIG. 5 is a diagram showing an example of construction using modified silicone in the embodiment of the present invention; FIG. 4 is a diagram showing an example of construction using a laminated sheet in an embodiment of the present invention;

The room odor reduction construction method of the present invention will be described below.

FIG. 1 is a diagram showing the basic steps of the present invention.

(Step I) First Measurement Step This step is a step of collecting indoor air and performing a chemical analysis.
Indoor air was sampled using an adsorbent and sampling pump corresponding to each target gas at a position of FL + 1.2 m according to the Ministry of Health, Labor and Welfare's "Sampling and Measuring Methods for Chemical Substances in Indoor Air."

A chromatographic chemical analysis is performed on the collected air.
Measurement method: Precise chemical analysis was performed using a sample collected by a sampling pump.
DCMS: Gas Chromatograph Chamber Volume Analyzer (VOC)
HPLC: high performance liquid chromatograph (aldehydes)
IC: Ion chromatography (ammonia, formic acid, etc.)

VOC (48 substances: ethanol, acetone, 2-propanol, dichloromethane, 1-propanol, methyl ethyl ketone, ethyl acetate, hexane, chloroform, 1,2-dichloroethane, 2,4-dimethylpentane, butanol, benzene, 1 , 2-dichloropropane, bromodichloromethane, trichlorethylene, 2,2,4-trimethylpentane, heptane, methyl isobutyl ketone, toluene, dibromochloromethane, butyl acetate, octane, tetrachloroethylene, ethylbenzene, m,p-xylene, styrene, o -xylene, nonane, α-pinene, m,p-ethyltoluene, 1,3,5-trimethylbenzene, o-ethyltoluene, β-pinene, 1,2,4-trimethylbenzene, decane, paradichlorobenzene, 1, 2,3-trimethylbenzene, limonene, nonanal, undecane, 1,2,4,5-tetramethylbenzene, decanal, dodecane, tridecane, tetradecane, pentadecane, hexadecane, aldehydes (14 substances: formaldehyde, acetaldehyde, acrolein) , propionaldehyde, crotonaldehyde, n-butyraldehyde, benzaldehyde, isovaleraldehyde, n-valeraldehyde, o-tolualdehyde, m-tolualdehyde, p-tolualdehyde, hexaldehyde, 2,5-dimethylbenzaldehyde,), Ammonia, acetic acid, formic acid, texanol, TXIB, 2-ethyl-1-hexanol, propionic acid, butyric acid, isovaleric acid, trimethylamine, sulfur compounds (methyl mercaptan, hydrogen sulfide, methyl sulfide, methyl disulfide), cyclohexane, methylcyclohexane , 2-methylpropionic acid, hexanol, hexamethylcyclotrisoloxane, 3-methylbutyric acid, 2-methylbutyric acid, caproic acid, 2,2,3,5-tetramethylheptane, octanal, 1,4-dichlorobenzene, decamethylcyclopentasiloxane, triethoxyfluorosilane, dimethoxy(methyl)silane, 5-heptan-2-one, 6-methyl, 3-tert-butyl-5-chloro-2-hydroxybenzophenone, octamethylcyclotetrasiloxane, levomenthol, 1-monolinolein, trimethylsilyl ester, di-n-hexyl sulfide, silicic acid, diethylbis(trimethylsilyl) ester, hexane 2.4-methyl, Propylcyclohexane, octane 2.6-dimethyl, propylbenzene, 1-pentanal, 2-hexanal, 2-heptenal, enanthic acid, valeric acid, 2-nonenal, 3-methylbutanal, hexanal, (E)-2-hexenal , (Z)-4-heptenal, (E)-2-octenal, (E)-2-nonenal, (E,Z)-2,6-nonadienal, (E,E)-2,4-decadienal, phenyl acetaldehyde, 2-heptanone, 2-octanone, pentanoic acid, 2-acetyl-3-hydroxyfuran, 3-hydroxy-2-methyl-4-pyrone, furfural, 5-methylfurfural, 2-acetylfuran, 4-hexanolide, 2-hexene-4-olide, 3-hexene-4-olide, 2-acetylpyridine, 2-acetyl-1,4,5,6-tetrahydropyridine, acetylpyrazine 2-ethyl-3-methylpyrazine, diethylmethylpyrazine , 5-methyl-(5H)-cyclopenta[b]pyrazine, 2,5-dimethyl-3-ethylpyrazine, 2,6-dimethyl-3-ethylpyrazine, 2,3,5-trimethylpyrazine, acetophenone, phenol, cinnamic aldehyde, methanethiol, dimethyl sulfide, diacetyl, pentanone-2, pentanal, 2-methylpropyl mercaptan, methyl isothiocyanate, dimethyl disulfide, 4-pentenenitrile, 2-methylbutanol-1, hexanone-2, ethyl isothiocyanate, 2,4-dithiapentane, heptanone-2, heptanal, 2,3,4-trithiapentane, 3-butenyl isothiocyanate, benzonitrile, octanone-2, nonanone-2, p-cresol, naphthalene, (E, E )-2,4-nonadienal, benzthiazole, 4-octanolide, 5-octanolide, decanol-1, undecanone-2, 4-decanolide, 5-decanolide, tridecanone-2, 4-dodecanolide, 5-dodecanolide, 2-pentenal , 1-penten-3-one, 1-penten-3-ol, (Z)-2-hexenal, (Z)-3-hexene-1-ol, 3-octanone, 1-octen-3-one, ( Z)-1,5-octadien-3-one, 3-octanol, (Z)-1,5-octadien-3-ol, (Z)-2-octen-1-ol, (E,Z)-2 , 5-octadien-1-ol, (Z)-3-no nenal, (Z,Z)-3,6-nonadienal, (Z)-2-nonen-1-ol, (Z)-6-nonen-1-ol, (E,Z)-2,6-nonadien- 1-ol, (Z,Z)-3,6-nonadien-1-ol, 2-methylpropanol, 2-butanol, 1-pentanol, 2-methylbutanol, 2-pentanol, 2-octanol, 1- Octen-3-ol, 2-nonanol, 2-decanol, 2-phenylethanol, 2-(4-hydroxyphenyl)ethanol, linalool, geraniol, humlenol II, carbon dioxide, (d+l)-2-hydroxypropanoic acid, 2 - oxopropanoic acid, hexanoic acid, octanoic acid, 2-ethylhexanoic acid, decanoic acid, dodecanoic acid, 2-phenylacetic acid, 4-hydroxy-3-methoxybenzoic acid, 2-butyl acetate, 2-methylpropyl acetate, acetic acid 2-methylbutyl, 3-methylbutyl acetate, 2-phenethyl acetate, ethyl butanoate, ethyl 2-methylbutanoate, ethyl 3-methylbutanoate, ethyl hexanoate, ethyl octanoate, ethyl decanoate, ethyl dodecanoate, ethyl tetradecanoate, 3-methylbutyl hexanoate, 3-methylbutyl octanoate, geranyl 2-methylpropanoate, butanal, 2-methylpropanal, 2-methylbutanal, (E)-2-nonanal, dodecanal, 2-oxopropanal l, Hydroxypropanone, 3-hydroxy-2-butanone, 2,3-butanedione, 2,3-pentanedione, 2-nonanone, β-damascenone, β-ionone, humradienone, 2-aminoacetophenone, N-methyltyramine, nicotine ethyl acetate, 2,3-dimethylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, sulfur dioxide, ethanethiol, methylthiomethane, methyldithiomethane, methyltrithiomethane, ethylthioethane, ethyldithioethane, 2-(methylthio)-2-propanethiol, 3-(methylthio)-1-propanol, 3-methyl-2-butene-1-thiol, 3-(methylthio)-propanal, 2-mercapto-3-methyl- 1-butanol, 3-(methylthio)propyl acetate, (1-methylethyl)-thiirane, 2-methoxy-4-vinylphenol, 4-hydroxybutanoic acid lactone, 4-hydroxypentanoic acid lactone, 2,5-dimethyl- 4-hydroxy-3(2H)-furanone, mi Rusene, humulene epoxide I, hop ether, carahana ether, 1,1-diethoxyethane, 2-ethyl-5,5-dimethyl-1,3-dioxane, 3-isopropyl-2-methoxypyrazine, 4,4 ,6-trimethyl-1,3-dioxane, 2,2,6-trimethyl-1,5-dioxane, 2,2,4,5-tetramethyl-1,3-dioxane, 2-ethenyl-2,5- Dimethyl-1,3-dioxane, 4-methyl-4-mercaptopentan-2-one, 4-phenylcyclohexene, benzophenone, fatty acids, alkyl acetates, alkyl-substituted benzenes, α-methylstyrene, chlorocresol, cumene, cyclohexanone, di /tribromophenol, dichlorobenzene, diphenyl sulfide, glycol ester, guaiacol, isophorone, methylbenzaldehyde, methyl benzoate, n-propylbenzene, pentane-1,2-dione, propylene glycol monobutyl ether, thioglycolic acid alkyl ester, tri Bromoanisole, trichloroanisole, trimethylanisole, lactic acid, peptides, acetoin, 2-methylbutylacetic acid, dimethyl trisulfide, aliphatic alcohols and aldehydes, methyl thioacetate, geosmin, 2-methylisoborneol, 4-vinylguaiacol, skatole, 2-methyl furan, 2-pentyl furan, 2-hydroxymethyl furan, 2-carboxaldehyde furan, 5-CHOH-2-CHO furan, 2-methanethiol furan, 3-hydroxy-4-ethyl-5-methyl 2 ( 5H)-furanone, 2,5-dimethyl-4-methoxy 3(2H)-furanone, 4-hydroxy-2,5-dimethyl 3(2H)-furanone, 2-methyl-3-hydroxy 4H-pyran-4- on, 2-CH2COCH3 pyrrole, 2-ethylpyrazine, 2-isobutylpyrazine, 2-methyl-6-propylpyrazine, 2-isobutyl-3-methylpyrazine, 2,3-dimethyl-5-ethylpyrazine, 2-methoxy- 3-methylpyrazine, 2-ethoxy-3-methoxypyrazine, 2-isopropyl-5-methoxypyrazine, 2-isobutyl-5-methoxypyrazine, 2-sec-butyl-3-methoxypyrazine, 2,5-dimethylthiophene, 2-acetylthiophene, 5-methyl-2-CHO thiophene, 3,5-dimethyl, 1,2,4-trithiolane, 3-methyl 1,3, 5-trithiolane, 2-isobutylthiazole, 2-acetylthiazole, 4-ethyl-5-propylthiazole, (Z)-hexenal, (E)-2-heptenal, (Z)-2-octenal, (Z)-2 -nonenal, (E,Z)-2,4-heptadienal, (E,E)-2,4-heptadienal, (E,Z)-2,4-decadienal, 2,6-dimethyl-3-methoxypyrazine, 2-methoxy-3-isopropylpyrazine, 2,4-dichloroanisole, 2,6-dichloroanisole, 2,3,6-trichloroanisole, 2,3,4,6-tetrachloroanisole, pentachloroanisole, 2, 4,6-tribromoanisole, octa-1,3-diene, α-terpineol, heptane-2-one, trans,trans-hepta-2,4-dienal, 2-(2-pentenyl)furan, methyl acrylate , methyl methacrylate, trans-2-nonenal, oct-1-en-3-one, trans-1,3-pentadiene, trans-3-hexenal, cis-3-hexenal, trans-2-heptenal, cis-6 -heptenal, trans-2-octenal, trans-5-octenal, cis-5-octenal, trans-7-nonenal, (Z)-3-hexenal, methional, (E,Z)-3,6-nonadienal, diosmin , cadinenol, isopropylmethylpyrazine, 2,4,6-trichloroanisole, 2-isobutyl-3-methoxypyrazine, 2-isopropyl-3-methoxypyrazine, n-hexanal, n-heptanal, 2-trans,4-cis, 7-cis-decadienal, decadienal, mercaptan, dimethylpolysulfide, dimethyltrisulfide, indole, chlorophenols, free chlorine, aldehyde (low molecular weight), trihalomethane iodide, cis-3-hexen-1-ol acetate, cis-3 - hexen-1-ols, aldehydes (high molecular weight), phenolic antioxidants, hypochlorous acid, hypochlorite ion, monochloramine, dichloramine, trichloramine, capric acid, lauric acid, C9-11 alkanal, alkenal with 7 or 10 carbon atoms and a double bond at the 2-position, dienal with 7 or 10 carbon atoms and a double bond at the 2- and 4-positions, nona-2-t-, 6-t - Dienal, Arcana (C5-C7), hexenal, 2,4-dienal (C5-C10), pentenyl furan, alkanal (C5-C10), alk-2-enal (C5-C10), heptadienal, heptanone, pent-2- t-enal, butenal, hept-2-enal, alkanol (C2-C9), 2-alkanone (C3-C11), deca-2-t,4-c,7-t-trienal, 2-transhexenal, nona -2,6-dienal, pentenyl furan in 2-position, 2-t,4-c-heptadienal, 2-t,4-t-heptadienal, alkanal, not 2-enal, 2-t,4-t -decadienal, 2-t,4-c-decadienal, oct-1-en-3-ol, non-2-t-,6-c-dienal, nona-2-t-enal, nona-3-c, 6-c-dienal, non-6-c-enal, penta-2,4-dienal, octo-2-enal, pent-1-en-3-one, 2-t-pentenylfuran, volatile fatty acids (C4 -C10), 2-t,4-t-octadienal, 2-t,2-c-octenal, heptenal, 2-c-pentenyl furan, alkanal (C5, C6, C8, C10), aliphatic ester , isobutyric acid, 3-c-hexenal, 4-c-heptenal, 6-t-nonenal, 2-t-1-pentenyl furan, 2-c-1-pentenyl furan, 5-pentenyl-2-furaldehyde, alcohol canal (C7-C9), trans-4,5-epoxy-t-2-nonenal, trans-4,5-epoxy-t-2-decenal, 1-octene-3-hydroxyperoxide, cis-1,5- Octadiene-3-hydroxyperoxide, cis-1,5-octadien-3-one, 2-butanone, 2-pentanone, 2-hexanone, 3-buten-2-one, 1-c-5-octadien-3-one , 3-t,5-t-octadien-2-one, 3-t,5-c-octadien-2-one, 3,5-undecadien-2-one, 1-butanol, 1-hexanol, 1-heptanol , 2-hexanol, 2-heptanol, 2-t-hexen-1-ol, 2-t-octen-1-ol, 1-hexen-3-ol, caprylic acid, penatanal, methylhexanal, methylhexanone, methylheptenone, Octenol, pentyl furan, cymene, nonener Quantification is performed for 436 substances, i.

(Step II) Selection/Determination of Procedure This step is the step of determining the deodorizing method based on the chemical analysis results obtained in Step I.
FIG. 2 shows part of the chemical analysis in the room where the corpse was left for a long period of time according to the present invention.
From FIG. 2, it can be seen that in the case of dead odor, aldehydes such as pentanal, hexanal, heptanal and octanal, and fatty acids such as caprylic acid and enanthic acid are the main components. Therefore, a selection is made to add a step of spraying hydrogen peroxide water in addition to the disinfection step with sodium hypochlorite.

In addition, when pet odor is the cause, ammonia, propionic acid, caproic acid, butyric acid, decamethylcyclopentasiloxane, etc. are the main components, so a selection is made to add a step of repeatedly deodorizing mainly with citric acid.

In addition, when cigarette smell is the cause, formaldehyde, acetaldehyde, acetone, methyl ethyl ketone, hexane, benzene, heptane, toluene, ethylbenzene, m, p-xylene, styrene, o-xylene, nonane, m, p-ethyltoluene, Since 1,3,5-trimethylbenzene, o-ethyltoluene, 1,2,4-trimethylbenzene, decane, 1,2,3-trimethylbenzene, and limonene are the main components, the process of spraying hydrogen peroxide water is omitted. Since it is effective to add, a selection is made to add the step of spraying the hydrogen peroxide solution.

Furthermore, if the fire odor is the cause, it is clear from the history of the fire. Make a selection to add a .
Thus, the working procedure of Step III is determined based on the results of chemical analysis obtained.

(Step III) First Odor Reduction Step This step is a step of deodorizing the room by the basic deodorizing step and the step added in step II. The basic deodorizing process is shown below.

(1) Bringing in an air purifier Bring in an air purifier that matches the size of the room and the strength of the odor.
The air purifier to be brought in is preferably an adsorption type air purifier using activated carbon or the like.

(2) Peel off the wallpaper Peel off the wallpaper up to the inner paper. The wallpaper has an odor, so it is necessary to remove the inner paper.

(3) Spraying sodium hypochlorite solution Sodium hypochlorite is sprayed all over the room with a sprayer. This process removes bacteria from the entire room and kills and activates viruses.
At this time, the sodium hypochlorite solution used was 0.5 to 10 wt %.

(4) Spraying citric acid solution Citric acid is sprayed all over the room with a sprayer. Neutralizes alkaline human urine odor, pet urine odor, fishy fish odor, tobacco odor, and fire odor with acidity and removes odors. It also has a bactericidal effect that suppresses the growth of bacteria, and deodorizes and disinfects while removing dirt.
At this time, the citric acid aqueous solution used was 3.85 wt %, but if the odor is strong, the raw citric acid powder may be used as it is.

(5) Bakeout Bakeout is performed by heating the entire room with a heater or the like and spraying water with a sprayer. This process volatilizes the odor-causing substances permeating into the room, and the odor-causing substances are adsorbed by the air purifier.
Bakeout conditions 35°C, humidity 60%,
Bake-out time 6 to 8 hours Bake-out days 3 to 5 days At 40°C and 90% humidity,
Bake-out time: 6 to 8 hours Bake-out days: 2 to 4 days The higher the temperature and humidity of the bake-out conditions, the stronger the deodorizing effect.

(6) Spraying Sodium Hydrogen Carbonate Solution Sodium hydrogen carbonate solution is sprayed all over the room with a sprayer.
Removes acidic oily odors and stains, and reduces bad odors.
At this time, the sodium hydrogen carbonate aqueous solution used was 3.85 wt %, but if the smell is strong, the raw sodium hydrogen carbonate powder may be used as it is. Note that sodium sesquicarbonate may be used instead of citric acid.

(7) Bake-out Bake-out is performed by heating the entire room with the heater again.
The bakeout conditions are the same as in step (5).

(8) Repetitive treatment Normally, the odor cannot be removed by one treatment, so the steps (3) to (7) are repeated to eliminate the odor.
It is preferable to apply once to twice for mild or moderate odors, and three to ten times for severe odors.

(Step IV) Second Measurement Step In the second measurement step, sensory evaluation is performed by a six-step odor intensity display method.
Odor intensity (evaluation by 6-step odor intensity indication method)
0: Odorless 1: Barely detectable odor (detection threshold)
2: A weak odor that makes it possible to identify what it is (cognitive threshold)
3: Easily perceivable odor 4: Strong odor 5: Strong odor Ministry of the Environment Odor Index Regulation Guidelines Table-2 A decision is made as to whether to repeat Step III, which is a reduction step. The odor intensity may be reduced to 1, but if the reduction in odor is not sufficient here, return to Step III and deodorize again.

If the odor is particularly strong, indoor air may be collected in the same manner as in step I and chemical analysis may be performed on the spot to identify the cause.
If chemical analysis reveals that a specific odorant remains, the process is reconfigured so as to focus on deodorizing that substance.

(Step V) Second Odor Reduction Step In this step, the laminate sheet is attached to the ceiling, wall, and floor for sealing.
Fig. 3 shows examples of pasting on the ceiling, wall surface, stepped portion, and floor surface of the entrance (entrance porch).
As the laminate sheet used in this example, a commercially available laminate sheet having gas barrier properties was used.
It is a laminated sheet with a multi-layer structure that combines a coating layer and a vapor deposition layer, in which a barrier coat layer and an inorganic vapor deposition barrier layer (alumina or silica) are laminated on a base film (PET, nylon, etc.).
Table 1 shows the diffusion rate characteristics of the odor-causing substance depending on the presence or absence of the laminated sheet used.

If necessary, apply a modified silicone agent to the corners of the ceiling, walls, floors, etc. where it is difficult to attach the laminated sheet, or where it is better to use it together with the sheet to block odors.
Fig. 3 shows an example of concrete construction.
In FIG. 4(a), the concrete slab under the floor joist contained odor-causing substances, so after the reduction treatment, the concrete slab was wrapped with modified silicone.
FIG. 4(b) Since odor-causing substances remained in the entrance porch, after reduction treatment, the small parts of the entrance porch were wrapped with modified silicone.
FIG. 4(c) Since odor-causing substances remained on the floor, after the reduction treatment, the floor frame and floor were wrapped with modified silicon and laminated sheets, respectively.
FIG. 4(d) Since odor-causing substances remained on the floor, after the reduction treatment, the pipes and the floor were wrapped with modified silicone.
FIG. 4(e) Since the odor-causing substance remained under the window frame, the window frame was wrapped with denatured silicone after reduction treatment.
FIG. 4(f) Since the odor-causing substance remained on the floor with fine wiring, it was wrapped using modified silicone after the reduction treatment.

(Process VI) Finishing In the same way as in Process IV, indoor air is collected and chemical analysis is performed on the spot to confirm whether odors have been reduced. If the value is below the reference value, finishing is performed.

After the odor reduction construction of the room of the present invention is performed, the inner wall and slab of the laminated sheet are protected from odorous substances by the laminated sheet, so at the time of re-construction, only the minimum deodorization and replacement of the laminated sheet are required. It is economical because it can be completed with

(Example 1)
Odor reduction work was carried out in a RC apartment complex with a wooden interior (41 years old) where the body had been left for a long time.
In the measurement before reduction measures, propionaldehyde, butyraldehyde, valeraldehyde, hexaaldehyde, heptanal, octanal, etc. were generated relatively significantly.
Therefore, after the disinfection process with sodium hypochlorite in the basic deodorizing process (3), the process of spraying hydrogen peroxide water and the process of using citric acid and sodium bicarbonate were selected to reduce odor.
Table 2 shows a comparison of indoor concentrations before and after the measures.

After implementing the odor reduction work, the indoor concentration of hexaaldehyde (1440 μg/m ³ ), which had the highest indoor concentration before the reduction measures, was reduced to 1.2 μg/m ³ after the reduction measures, a 99.9% reduction in concentration. Even for other substances, the concentration reduction rate was significantly attenuated from 86.4 to 99.5%, and even in the sensory evaluation by the panel (6 people), the odor intensity was 4.5 After taking measures, it decreased to 1, and the effect of odor reduction construction was recognized.

(Example 2)
Odor reduction work was carried out in an RC housing complex/inner wooden construction (22 years old) where pets are kept indoors and a large amount of waste has been left for a long time.
Ammonia, acetic acid, ethanol, toluene, ethyl acetate, acetone, etc. were detected at high levels in the measurement before the reduction measures were taken.
Therefore, in the citric acid aqueous solution spraying step of the basic deodorizing step (4), the step of spraying 3.85 wt% of the citric acid aqueous solution five times and performing the deodorizing step with the citric acid raw powder twice is replaced with formic acid. , acetic acid, etc. were selected to use sodium bicarbonate, and odor reduction construction was carried out.
Table 3 shows a comparison of indoor concentrations before and after taking measures.

The concentrations of ammonia, acetic acid, ethanol, toluene, ethyl acetate, and acetone were relatively ^high in the measurements before the reduction measures were taken. .3% reduction in indoor concentration. Concentrations of other substances were also reduced in all of the 40 substances measured. Sensory evaluation by a panel (6 people) also showed that the odor intensity was 4 before the countermeasures, and decreased to 1 after the countermeasures, confirming the effect of the odor reduction construction.

According to the present invention, it is possible to quantitatively identify the causative agent of the odor and reduce the causative agent to the extent that the odor can be blocked by the laminated sheet having gas barrier properties. It is possible to provide an odor reduction construction method that makes it possible to save money.

In addition, since the present invention uses a laminated sheet having gas barrier properties for finishing, most of the new odor-causing substances reach only the laminated sheet, and when renovation work is performed again, the cost of deodorizing can be suppressed. There is an advantage.

Moreover, according to the present invention, by using activated carbon for the adsorption means, there is an effect that odors are not dispersed more than necessary during renovation work.

Furthermore, according to the present invention, by using modified silicone together, it is possible to fill gaps between complex structural parts of houses and laminated sheets having gas barrier properties, so that a stronger deodorant effect can be obtained.

Claims (4)

a first measuring step of measuring an odor-causing substance;
Having a first odor reduction step of removing the causative substance,
The first odor reduction step is a step of removing the decorative material and/or the burned portion;
a step of spraying the entire room with a deodorant disinfectant selected from at least one type;
a step of performing bake-out at least once after spraying the deodorizing and disinfecting agent;
a step of adsorbing the odor-causing substance volatilized by the bake-out with an adsorption means;
wherein the first odor reduction step is determined based on the amount of the causative agent obtained from the first measurement step;
Having a second measurement step of re-measuring the odor-causing substance after the first odor reduction step,
An odor reduction construction method for a room, comprising a second odor reduction step of attaching a laminated sheet having gas barrier properties to the walls, ceiling, and floor of the room without gaps. 4. The deodorant disinfectant used in the first odor reduction step is selected from sodium hypochlorite, citric acid, acetic acid, sodium hydrogen carbonate, hydrogen peroxide solution, and sodium sesquicarbonate. 1. The room odor reduction construction method described in 1. 3. The room odor reduction construction method according to claim 1, wherein the adsorption means is an air purifier equipped with activated carbon. The second odor reduction step is a step of attaching the gas barrier laminated sheet to the walls, ceiling, and floor of the room without gaps, and a step of wrapping the corners of the wall, ceiling, and floor of the room with modified silicone. 4. The room odor reduction construction method according to any one of claims 1 to 3, characterized by comprising a step of combining

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