Method for removing malodor in building or vehicle

Abstract

To provide a method for removing malodors in buildings or vehicles that can reduce damage to human bodies, animals and plants, leather products, electric appliances, and the like, and can also shorten a working time.SOLUTION: A method for removing malodors in a building or vehicle includes: a first step involving disinfection of a malodorous zone in the building or vehicle; a second step involving removal of a malodor source in the malodorous zone by means of polishing and / or washing; and a third step involving fumigation of the malodorous zone with hydroxyl radicals produced using a hydroxyl radical generator. The first to third steps are performed in the stated order.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a method for removing abnormal odors in a building or a vehicle.

Background Art

[0002] Examples of abnormal odors (bad odors) in a building or a vehicle that are difficult to remove include, for example, the burnt smell of a fire (including a small fire) and the soot odor due to adhered soot, the putrid smell when human or animal corpses and excrement are left unattended for a long time, the mold odor, the tobacco odor, the tar odor, the fragrance odor, the secondary petroleum odor, the spice odor, the abnormal odor caused by specific malodorous substances (22 substances), etc. For the former, leaving it unattended may cause health problems such as headache, dizziness, nausea, and sore throat. For the latter, the putrid body fluids, blood, excrement, etc. (odor sources) from the corpses may penetrate into the structures of the building or vehicle such as the floor, wall, pillar, ceiling, etc., making it even more difficult to remove the abnormal odor.

[0003] In the cleaning work (special cleaning) for restoring the above-mentioned building or vehicle (in this specification, the former is referred to as a fire-affected property and the latter as an accident-affected property), it is known to use ozone for removing abnormal odors. For example, Patent Document 1 discloses a deodorizing method for a room where a deceased person and / or an animal has been left unattended, which includes a dirt cleaning operation for cleaning dirt consisting of one or more selected from body fluids, feces, and urine, and an ozone fumigation operation for spraying ozone into the room after the dirt cleaning operation. Patent Document 2 discloses a deodorizing method for a room where a fire accident has occurred, which has a soot odor removal step. The soot odor removal step includes an ozone fumigation operation for spraying ozone into the room and a coating operation for applying a paint containing activated carbon to the inner wall where soot remains. The ozone fumigation operation uses 6500 g or more of ozone per 1 m 3 and is characterized by the use of ozone in an amount of 6500 g or more per 1 m.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, ozone damages the human body, animals and plants, leather products, electrical products, etc. Moreover, since the ozone odor is strong, it is necessary to gradually ventilate in order to suppress the influence not only on the work site but also on the neighborhood. As a result, cleaning workers are forced to wait for a long time and the working hours become long, which is a problem.

[0006] The present disclosure has been made in view of the above actual situation, and an object of the present disclosure is to provide a method for removing abnormal odors in a building or a vehicle capable of reducing damage to the human body, animals and plants, leather products, electrical products, etc. and shortening the working hours.

Means for Solving the Problems

[0007] One aspect of the present disclosure is a first step of disinfecting an abnormal odor area in a building or a vehicle, a second step of removing the source of the abnormal odor in the abnormal odor area by polishing and / or washing, a third step of fumigating with hydroxyl radicals generated using a hydroxyl radical generator in the abnormal odor area, and relates to a method for removing abnormal odors in a building or a vehicle, characterized in that the first step to the third step are performed in the described order.

[0008] In one aspect of the present disclosure, in the method for removing abnormal odors inside a building or a vehicle, in the first step, cleaning workers can work safely. Further, due to the synergistic effect of the second step and the third step, while reducing damage to the human body, animals and plants, leather products, electrical products, etc., the abnormal odors inside the building or the vehicle can be removed. Furthermore, in the third step, since cleaning workers no longer need to wait during the hydroxyl radical fumigation, it is possible to perform another task in parallel with the third step, and since rapid ventilation can be performed after fumigation, the working time can be significantly shortened.

[0009] In one aspect of the present disclosure, it further includes a fourth step of coating the location where the abnormal odor source has been removed with a resin paint, the fourth step may be performed after the third step, or may be performed after the second step and before the third step.

[0010] By further including the fourth step of coating the location where the abnormal odor source has been removed with a resin paint, the abnormal odors inside the building or the vehicle can be more powerfully reduced.

[0011] Another aspect of the present disclosure is a first step of disinfecting an abnormal odor area inside a building or a vehicle, a second step of removing the abnormal odor source in the abnormal odor area by polishing and / or cleaning, a third step of fumigating the abnormal odor area with hydroxyl radicals generated using a hydroxyl radical generator, and relates to a method for removing abnormal odors inside a building or a vehicle, characterized in that the first step to the third step are performed in the order of the first step, the third step, the second step, or in the order of the third step, the first step, the second step.

[0012] In another aspect of the present disclosure, in the method for removing abnormal odors in a building or a vehicle, in the first step, cleaning workers can work safely. Further, due to the synergistic effect of the second step and the third step, while reducing damage to the human body, animals and plants, leather products, electrical products, etc., the abnormal odors in the building or the vehicle can be removed. Furthermore, in the third step, since cleaning workers no longer need to wait during the hydroxyl radical fumigation, it is possible to perform another task in parallel with the third step, and since rapid ventilation can be performed after fumigation, the working time can be significantly shortened.

[0013] In another aspect of the present disclosure, it further includes a fourth step of coating the location where the abnormal odor source has been removed with a resin paint, and the fourth step may be performed after the second step.

[0014] By further including a fourth step of coating the location where the abnormal odor source has been removed with a resin paint, the abnormal odors in the building or the vehicle can be more powerfully reduced.

Brief Description of the Drawings

[0015]

Figure 1

Embodiments for Carrying Out the Invention

[0016] Hereinafter, preferred embodiments of the present disclosure will be described in detail. It should be noted that the embodiments described below do not unduly limit the content of the present disclosure described in the claims, and not all of the configurations described in the embodiments are essential as the solution means of the present disclosure.

[0017] The method for removing abnormal odors inside a building or a vehicle according to this embodiment includes a first step of disinfecting the abnormal odor area inside the building or the vehicle, a second step of removing the source of the abnormal odor in the abnormal odor area by polishing and / or cleaning, and a third step of fumigating the abnormal odor area with hydroxyl radicals generated using a hydroxyl radical generator. The first to third steps may be performed in any of the following orders: the order of the first step, the second step, and the third step (the first step order), the order of the first step, the third step, and the second step (the second step order), or the order of the third step, the first step, and the second step (the third step order) (FIG. 1). Further, the hydroxyl radical generator in the present disclosure does not include one that generates ozone by an ozone gas generator, sends it into the space, and generates hydroxyl radicals by reacting with moisture in the space.

[0018] In the first step, cleaning workers can work safely. Further, due to the synergistic effect of the second and third steps, it is possible to reduce the damage to the human body, animals and plants, leather products, electrical products, etc., while removing the abnormal odor inside the building or the vehicle. Furthermore, in the third step, cleaning workers do not need to wait during the hydroxyl radical fumigation, so it is possible to perform another operation in parallel with the third step. Also, since rapid ventilation is possible after fumigation, the working time can be significantly shortened. The other operation performed in parallel is not particularly limited, and includes the first step, the second step, and the fourth to sixth steps described later. In this specification, "disinfection" (preventing infection by killing pathogenic bacteria (Kodansha Encyclopedia)) includes the meanings of "sterilization" (killing pathogens such as bacteria (Kodansha Encyclopedia)), "disinfection" (removing bacteria (Kodansha Encyclopedia)), and "sterilization" (creating a sterile state by heat, chemicals, etc. (Kodansha Encyclopedia)).

[0019] The method for removing abnormal odors inside a building or a vehicle according to this embodiment further includes a fourth step of coating the location where the source of the abnormal odor has been removed with a resin paint. The fourth step may be performed after the third step in the first step order, may be performed after the second step and before the third step, or may be performed after the second step in the second and third step orders.

[0020] By further including a fourth step of coating the location where the odor source has been removed with a resin paint, the odor inside a building or a vehicle can be more effectively reduced.

[0021] In the present embodiment, there are no particular restrictions on the odors inside a building or a vehicle that are difficult to remove. For example, there are burnt odors from fires (including small fires) and soot, fire odors caused by attached soot, putrid odors when human or animal carcasses and feces and urine are left unattended for a long time, mold odors, tobacco odors, tar odors, perfume odors, secondary petroleum odors, spice odors, odors caused by specific malodorous substances (22 substances), and the like. In this specification, embodiments for typical burnt odors and soot in fire-damaged properties and putrid odors when human or animal carcasses and feces and urine are left unattended for a long time in accident properties are disclosed. Also, in the present embodiment, there are no particular restrictions on the type of building. For example, there are apartment houses such as condominiums and apartments, detached houses, commercial buildings, office buildings, warehouses, hospitals, gymnasiums, arena facilities, accommodation facilities, and the like. Also, a temporary space outdoors such as a tent partitioned by partitions such as cloth, vinyl sheets, and partitions is also included in "inside a building". In the present embodiment, there are no particular restrictions on the type of vehicle as long as a space for passengers is secured. For example, there are passenger cars, trucks, buses, construction vehicles, military vehicles, ships, railway vehicles, airplanes, and the like. Furthermore, the application location of the odor removal method of the present embodiment is not limited to inside a building or a vehicle, and may be any enclosed space partitioned from an open space.

[0022] (1) In the case of the fire odor of a fire-damaged property <The first step: disinfection> In a fire-damaged property, in addition to the fire odor remaining, mold may occur and spread in the fire-extinguishing water. Therefore, in order to ensure the safety of the workers, the odor removal method for inside a building or a vehicle of the present embodiment includes a first step of disinfecting the odor area inside the building or the vehicle. The odor area may include the area where the fire-extinguishing water was sprayed in the case of a fire-damaged property.

[0023] The disinfectant used for disinfection is not particularly limited as long as it is generally used for disinfection. For example, aqueous solutions of compounds having oxidizing power such as hydrogen peroxide solution, aqueous hypochlorous acid solution, aqueous sodium hypochlorite solution, stabilized chlorine dioxide, chlorine dioxide, accelerated hydrogen peroxide, and accelerated hydrogen peroxide solution can be mentioned. The method of spraying the disinfectant is not particularly limited, and it may be spray-sprayed over the entire malodorous area inside the building or vehicle, or it may be sprayed intensively on the malodorous source.

[0024] In the case of the fire odor of a fire-damaged property, the method for removing malodors inside the building or vehicle according to this embodiment may further include a step of disassembling or removing the household goods in the malodorous area before the first step. Thereby, the subsequent steps can be carried out smoothly.

[0025] <Second Step: Removal> The method for removing malodors inside the building or vehicle according to this embodiment includes a second step of removing the malodorous source in the malodorous area by polishing and / or washing following the first step.

[0026] Examples of the sources of abnormal odors in the burnt smell of a fire-damaged object include, for example, burnt areas of the fire and attached soot. The method of removing the source of abnormal odor by polishing and / or cleaning is not particularly limited. For example, after spraying a cleaning agent around the area where the source of abnormal odor is attached, the source of abnormal odor may be removed by polishing. The location where the source of abnormal odor is removed is not particularly limited. Examples include the floor, earthen floor, wall, column, ceiling, concrete structure, floor base member, wall base member, column base member, ceiling base member, etc. inside a building or vehicle. The cleaning agent is not particularly limited, but for example, when ethanol, an alkaline cleaning agent, or an acidic cleaning agent is used, the sprayed area of the cleaning agent can be disinfected simultaneously. It is preferable that the cleaning agent contains an abrasive such as Scotch-Brite (manufactured by 3M) because the removal of the source of abnormal odor is more effective. Since the cleaning agent may be difficult to remove if it adheres to members such as the floor, wall, column, ceiling, etc. (e.g., wood, tile, plasterboard, resin, etc.) due to dripping, it is more preferable that the cleaning agent contains a thickening agent such as butyl diglycol to delay dripping. The polishing method is not particularly limited, but conventional disk sander electric polishing is not very preferable because there is a risk of damaging the concrete structure and hair cracks (cracks).

[0027] When proteins and lipids are attached as the source of abnormal odor, as a second step, a cleaning agent containing a degrading enzyme such as protease or lipase may be used to clean the areas where the proteins and lipids are attached. When the attached area is concrete, an alkaline cleaning agent is preferable because the use of an acidic cleaning agent may cause efflorescence (white bloom phenomenon) and make removal difficult.

[0028] <The Third Step: Hydroxyl Radical Fumigation> The method for removing abnormal odors inside a building or a vehicle according to this embodiment includes, following the second step, a third step of fumigating an abnormal odor area with hydroxyl radicals generated using a hydroxyl radical generator. Due to the synergistic effect of the second step and the third step, it is possible to remove abnormal odors inside a building or a vehicle while reducing damage to the human body, animals and plants, leather products, electrical products, etc. Furthermore, in the third step, since the cleaning worker does not need to wait during the hydroxyl radical fumigation, it is possible to perform another task in parallel with the third step. Therefore, the third step may be performed after the first step and before the second step, or may be performed before the first step. Also, since ventilation can be rapidly performed after fumigation, the working time can be significantly shortened.

[0029] For the fumigation of hydroxyl radicals, a hydroxyl radical generator is used. The hydroxyl radical generator in this embodiment does not include those that generate ozone by an ozone gas generator, send the ozone into the space, and generate hydroxyl radicals by reacting with moisture in the space. The fumigation time of hydroxyl radicals is not particularly limited as long as there is an effect of removing residual odors, etc., and examples include 24 hours or more and 72 hours or less.

[0030] The manifestation of the effect of fumigation with hydroxyl radicals alone is slower than that of conventional ozone fumigation. Therefore, in the method for removing abnormal odors inside a building or a vehicle according to this embodiment, blowing or fumigation with a small amount of ozone may be used in combination in the third step. A wind generating device is used for blowing. Also, the fumigation amount of ozone is within a range where there is no damage to the human body, animals and plants, leather products, electrical products, etc. (for example, less than 1500 mg per 1 m 3 ). Thereby, abnormal odors can be removed faster than conventional ozone fumigation. Furthermore, if an enzyme-based deodorant is used in combination in the third step, the remaining abnormal odor sources can be decomposed, and the abnormal odors can be removed more effectively.

[0031] <Fourth Step: Coating> The method for removing abnormal odors inside a building or a vehicle according to this embodiment may include a fourth step of coating the location where the odor source has been removed with a resin paint. By the fourth step, it is possible to prevent the residual odor from returning in the first to second steps due to moisture, humidity, etc. The fourth step is carried out after the second step of removing the odor source, and can be carried out in any order with the third step, or may be carried out in parallel.

[0032] There are no particular restrictions on the resin paint used for coating. For example, one or more selected from organic resin paints such as acrylic resin paint, epoxy resin paint, urethane resin paint, fluororesin paint, water-based resin paint, powder resin paint containing a cement mixture, etc. may be mentioned. There are no particular restrictions on the coating method. For example, roller coating, brush coating, spray spraying, etc. may be mentioned.

[0033] (2) In the case of the putrid odor of an accident site <The First Step: Disinfection> In an accident site, various pests, bacteria, and viruses may occur and spread in the odor source. Therefore, in order to ensure the safety of workers, the method for removing abnormal odors inside a building or a vehicle according to this embodiment includes a first step of disinfecting the abnormal odor area inside the building or the vehicle.

[0034] There are no particular restrictions on the disinfectant used for disinfection as long as it is generally used for disinfection. For example, aqueous solutions of compounds having oxidizing power such as hydrogen peroxide solution, aqueous hypochlorous acid solution, aqueous sodium hypochlorite solution, stabilized chlorine dioxide, chlorine dioxide, accelerated hydrogen peroxide, accelerated hydrogen peroxide solution, etc. may be mentioned. There are no particular restrictions on the spraying method of the disinfectant. It may be spray-sprayed over the entire abnormal odor area inside the building or the vehicle, or may be sprayed intensively on the odor source.

[0035] <The Second Step: Removal> The method for removing abnormal odors inside a building or a vehicle according to this embodiment includes a second step of removing the odor source in the abnormal odor area by polishing and / or washing following the first step.

[0036] Examples of the source of the strange odor in the accident object include, for example, the putrid odor when human or animal carcasses and excrement are left unattended for a long time. There are no particular restrictions on the method of removing the source of the strange odor by polishing and / or cleaning. For example, after spraying a cleaning agent around the location where the source of the strange odor adheres, the source of the strange odor may be removed by cleaning. The location where the source of the strange odor is removed is not particularly restricted. For example, it includes the floor, dirt floor, wall, pillar, ceiling, concrete structure, floor base member, wall base member, pillar base member, ceiling base member, etc. inside a building or a vehicle. The cleaning agent is not particularly restricted, but the putrid body fluids and blood, etc. (source of the strange odor) from the carcass are viscous and difficult to remove when adhering to the members (such as wood, tiles, plasterboard, resin, etc.) that make up the floor, wall, pillar, ceiling, etc. Therefore, it is preferable to use a cleaning agent containing, for example, protease, lipase or a cleaning agent containing enzymes for decomposing proteins and lipids to decompose and remove the source of the strange odor. When the location where the source of the strange odor adheres is concrete, an alkaline cleaning agent is preferable because the use of an acidic cleaning agent may cause efflorescence (white efflorescence phenomenon) and make removal difficult.

[0037] <The third step: Hydroxyl radical fumigation> The method for removing the strange odor inside a building or a vehicle according to this embodiment includes a third step of fumigating the strange odor area with hydroxyl radicals generated using a hydroxyl radical generator following the second step. Note that the third step may be performed after the first step and before the second step, or may be performed before the first step. Due to the synergistic effect of the second step and the third step, it is possible to remove the strange odor inside a building or a vehicle while reducing damage to the human body, animals and plants, leather products, electrical products, etc. Furthermore, due to the third step, the cleaning worker does not need to wait during the hydroxyl radical fumigation, so it is possible to perform another operation in parallel with the third step, and since ventilation can be rapidly performed after fumigation, the working time can be significantly shortened.

[0038] The fumigation of hydroxyl radicals uses a hydroxyl radical generator. The hydroxyl radical generator in this embodiment does not include one that generates ozone by an ozone gas generator, sends it into a space, and generates hydroxyl radicals by reacting with moisture in the space. The fumigation time of hydroxyl radicals is not particularly limited as long as it has an effect of removing residual odors, etc. For example, it may be 30 minutes or more and within 3 hours, or 1 hour or more and within 2 hours.

[0039] The fumigation of hydroxyl radicals alone takes longer to exhibit an effect than conventional ozone fumigation. Therefore, in the method for removing abnormal odors in a building or a vehicle of this embodiment, blowing air or fumigation with a small amount of ozone may be used in combination in the third step. A wind generating device is used for blowing air. Also, the fumigation amount of ozone is within a range that does not cause damage to the human body, animals and plants, leather products, electrical products, etc. (for example, less than 1500 mg per 1 m 3 ). Thereby, abnormal odors can be removed faster than conventional ozone fumigation. Furthermore, if an enzyme-based deodorant is used in combination in the third step, the remaining odor sources can be decomposed, and abnormal odors can be removed more effectively.

[0040] <Fourth step: Coating> The method for removing abnormal odors in a building or a vehicle of this embodiment may include a fourth step of coating the location where the odor source has been removed with a resin paint. By the fourth step, it is possible to prevent the return of residual odors in the first to second steps due to moisture, humidity, etc. The fourth step is performed after the second step of removing the odor source, and can be performed in any order with the third step, or may be performed in parallel.

[0041] The resin paint used for coating is not particularly limited. For example, one or more selected from organic resin paints such as acrylic resin paint, epoxy resin paint, urethane resin paint, fluororesin paint, water-based resin paint, powder resin paint containing a cement mixture, etc. may be mentioned. The coating method is not particularly limited. For example, roller coating, brush coating, spray spraying, etc. may be mentioned.

[0042] In the case of the accident object, putrid body fluids, blood, feces, etc. (odor sources) from the corpses penetrate into the structures of the building or vehicle such as the floor, walls, pillars, ceiling, etc., and in the second step, it may not be possible to completely remove the pollution source. In this case, the method for removing the odor in the building or vehicle of the present embodiment may further include, after the second step and before the fourth step, a fifth step of disassembling the structure to expose the odor source penetrating into the structure, and a sixth step of removing the exposed odor source by polishing and / or washing.

[0043] <Fifth step: Disassembly, exposure> The structure to be disassembled is not particularly limited, and examples include surface members (such as flooring wood, tatami, tiles, carpets, cushion floors, etc.) covering the floor, walls, pillars, ceiling, etc. The structure (base member) of the building or vehicle to which the odor source exposed by the disassembly adheres is not particularly limited, and examples include plywood, concrete, mortar, iron plates, gypsum boards, beams, floor edges, floor edge supports, etc.

[0044] <Sixth step: Removal> The method for removing the odor source is not particularly limited. For example, after spraying a cleaning agent around the location where the odor source adheres, the odor source may be removed by cleaning and / or polishing. The cleaning agent is not particularly limited, but putrid body fluids, blood, etc. (odor sources) from the corpses are viscous and difficult to remove when adhering to the members (such as wood, tiles, plasterboard, resin, etc.) constituting the floor, walls, pillars, ceiling, etc. Therefore, it is preferable to use a cleaning agent containing, for example, protease, lipase, or a cleaning agent containing enzymes for decomposing proteins and lipids to decompose and remove the odor source. When the location where the odor source adheres is concrete, an alkaline cleaning agent is preferable because the use of an acidic cleaning agent may cause efflorescence (white bloom phenomenon) and make removal difficult.

[0045] When the odor source adheres to household goods such as futons, clothes, tatami mats, daily necessities, and electrical appliances, the second step or the sixth step may further include a step of sealing and packing and / or carrying out the household goods to which the odor source adhered after removing the odor source by washing and / or polishing. As the material used for the sealing and packing, polyethylene or vinyl chloride is preferable so as not to scatter the odor source, pests, bacteria, etc., and the thickness is preferably 0.05 mm or more.

[0046] In addition, although the present embodiment has been described in detail as above, those skilled in the art will easily understand that many modifications can be made without substantially departing from the novel matters and effects of the present disclosure. Therefore, all such modified examples are included in the scope of the present disclosure. For example, in the specification or the drawings, a term described at least once together with a broader or synonymous different term can be replaced with that different term anywhere in the specification or the drawings. Further, the configuration of the present embodiment is not limited to that described in the present embodiment, and various modifications are possible.

Claims

1. A first step of disinfecting an odor area inside a building or a vehicle; A second step of removing an odor source in the odor area by polishing and / or washing; A third step of fumigating with hydroxyl radicals generated using a hydroxyl radical generator in the odor area, and A method for removing an odor inside a building or a vehicle, characterized in that the first step to the third step are performed in the described order.

2. In the method for removing an odor inside a building or a vehicle according to Claim 1, further comprising a fourth step of coating a location where the odor source has been removed with a resin paint, and the method for removing an odor inside a building or a vehicle, characterized in that the fourth step is performed after the third step, or after the second step and before the third step.

3. A first step of disinfecting an odor area inside a building or a vehicle; A second step of removing an odor source in the odor area by polishing and / or washing; A third step of fumigating with hydroxyl radicals generated using a hydroxyl radical generator in the odor area, and the method for removing an odor inside a building or a vehicle, characterized in that the first step to the third step are performed in the order of the first step, the third step, the second step, or in the order of the third step, the first step, the second step.

4. In the method for removing an odor inside a building or a vehicle according to Claim 3, further comprising a fourth step of coating a location where the odor source has been removed with a resin paint, and the method for removing an odor inside a building or a vehicle, characterized in that the fourth step is performed after the second step.

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