JP2023012873A - room cleaning method - Google Patents

Abstract

To provide a method for efficiently removing pollution and deodorizing a room in special cleaning.SOLUTION: A cleaning method includes disinfecting or sterilizing a room polluted by dirt originating from carcasses, solidifying the dirt and remove it, heating a portion polluted by the dirt at a temperature of 250°C-550°C with warm air, and removing stain at the heated portion. The portion polluted by the dirt is at least one of a floor, a wall, a pillar, a ceiling of the room, a backing member of the floor, a backing member of the wall, a backing member of the pillar and a backing member of the ceiling.SELECTED DRAWING: Figure 1

Description

One embodiment of the invention relates to a method of cleaning a room. For example, one embodiment of the present invention relates to a method of cleaning a room in which human or animal remains have been left.

When the corpses of humans or animals are left in a room for a long time, the decay of the corpses progresses, and blood, bodily fluids, and pieces of flesh discharged from the corpses (hereinafter collectively referred to as filth) contaminate the rooms. A contaminated room is also called an accident property. In the cleaning work (special cleaning) for cleaning the accident property and restoring it to its original state, it is known to deodorize the room using, for example, ozone (see Patent Document 1). Moreover, it is known that deodorization using ozone is also effective for a room in which a fire has broken out (see Patent Document 2).

JP 2020-96694 A Japanese Patent No. 6624753

An object of one of the embodiments of the present invention is to provide a new method for special cleaning. Another object of one of the embodiments of the present invention is to provide a method for efficiently removing dirt or deodorizing a room in special cleaning.

One embodiment of the present invention is a room cleaning method. This cleaning method involves disinfecting or sterilizing the room contaminated with the filth derived from the corpse, solidifying and removing the filth, and blowing warm air to the area contaminated with the filth to a temperature of 250°C or higher. Including heating at a temperature of 550° C. or less and destaining the heated part. The part contaminated with dirt is at least one of a floor, a wall, a column, a ceiling, a floor base member, a wall base member, a column base member, and a ceiling base member in the room.

In this cleaning method, after heating, the room may be further treated with ozone, and may be treated with a deodorant containing a photocatalyst.

4 is a flow chart of a cleaning method according to an embodiment of the present invention; FIG. 4 is a schematic side view explaining the cleaning method according to the embodiment of the present invention;

Hereinafter, each embodiment of the present invention will be described with reference to the drawings. However, the present invention can be implemented in various aspects without departing from the gist thereof, and should not be construed as being limited to the description of the embodiments illustrated below. Even if there are other effects that are different from the effects brought about by the aspects of the embodiments described below, those that are obvious from the description of this specification or those that can be easily predicted by those skilled in the art are naturally It is understood that it is brought about by the invention.

FIG. 1 shows a flow of a cleaning method according to one embodiment of the present invention. This cleaning method is a method for cleaning a room in which a corpse has been left for a long period of time and putrefaction has progressed, and as a result, the room has been contaminated with filth derived from the corpse. There are no restrictions on the room to be processed, and it may be a room in a collective housing such as a condominium or an apartment, a room in a detached house, or a room in a commercial building, a warehouse, a hospital, an accommodation facility, or the like. The cleaning method, which can include several steps, includes heat treatment of parts (eg, floors, walls, pillars, or ceilings) contaminated by dirt. This heat treatment can evaporate, decompose, or carbonize the sebum and oil contained in the waste, so that the contamination can be effectively removed. Further, this cleaning method may include deodorizing the room by spraying a deodorant containing a compound having a photocatalytic function (hereinafter simply referred to as a photocatalyst).

1. Disinfection, Sterilization First, prior to heat treatment, the cleaning method may optionally include a step of disinfecting or sterilizing the room. When carcasses decompose, various pests are generated, and bacteria and viruses are generated and spread from the carcasses and filth. For this reason, as one of the purposes of ensuring the safety of workers, the entire room may be disinfected or sterilized, focusing on the areas contaminated by the dirt. For disinfection or sterilization, an aqueous solution of an oxidizing compound (hereinafter referred to as a disinfectant) such as hydrogen peroxide solution, hypochlorous acid aqueous solution, or sodium hypochlorite oxygen aqueous solution can be used. The disinfectant may be distributed by spraying or misting the entire room. Alternatively, the disinfectant may be sprayed intensively on the contaminated portion. After disinfection and sterilization with the disinfectant are completed, the disinfectant is wiped off with a sponge, cloth, mop, or the like.

2. Cleaning of Contaminated Areas Cleaning may then be performed, focusing on the contaminated areas. Specifically, a cleaning agent containing a relatively high concentration (e.g., 20% or more and 50% or less) of an active bactericidal component, or a coagulant containing a water-absorbing polymer or the like is used alone or in combination, mainly on the contaminated part. disperse. Dirt from carcasses is viscous, and if it adheres to members (for example, wood, tiles, resin, etc.) constituting floors, walls, pillars, ceilings, etc., it may be difficult to remove. By treating the contaminated portion with the cleaning agent or coagulant described above, the contaminated portion can be sterilized and the waste can be solidified (gelled). As a result, dirt adhering to the contaminated portion can be easily removed as solid matter. One effective method for removing dirt is to use a spatula or the like to scrape off the dirt from the surface of the contaminated portion.

When the amount of filth is large, or when the corpse is left for a long time, the filth from the corpse may permeate not only the surfaces of the floor, walls, pillars, and ceiling, but also the interior thereof. In this case, surface members (such as wood for flooring, tatami mats, tiles, carpets, cushion floors, etc.) covering floors, walls, pillars, and ceilings may be peeled off. A room can be cleaned more effectively by peeling off the surface members and washing the exposed base members (e.g. plywood, concrete, mortar, iron plates, gypsum boards, beams, joists, joist receivers, etc.) to remove dirt. can be cleaned.

3. Heat Treatment In the cleaning method according to one embodiment of the present invention, the dirt adhering to the contaminated portion is subjected to heat treatment. Heat treatment is carried out by blowing warm air (or hot air) against the floor, pillar or wall that is to be contaminated, in order to avoid the use of fire. If the ceiling is contaminated with dirt, hot air may also be blown onto the ceiling for heat treatment. The heating temperature is appropriately selected from the range of 250° C. or higher and 550° C. or lower, or 300° C. or higher and 500° C. or lower. In the heat treatment, as shown in FIG. 2, a hot air blowing tool 100 called a heat gun may be used to blow hot air onto the dirt 102 on the contaminated portion 104 . When contamination with dirt spreads to the interior of floors, walls, pillars, and ceilings, the surface members covering these are peeled off, and the dirt adhering to the exposed base members is subjected to heat treatment. This treatment evaporates, decomposes, or carbonizes the filth and the sebum and oils contained therein, transforming it into a solid with greatly reduced viscosity. As a result, contaminants can be effectively removed.

The heat source in the heat treatment is not limited to a tool that generates hot air, and may be, for example, a heating lamp (heater lamp). A halogen lamp is exemplified as the light source of the lamp. When a heater lamp is used, a wide range of contaminated portions can be treated by adjusting the irradiation range of light.

4. Stain Removal In a cleaning method according to one embodiment of the present invention, after heat treatment, stains caused by dirt may be removed. For stain removal, for example, in addition to chemicals containing chelating agents, chemicals containing oxidizing agents such as hydrogen peroxide, hypochlorous acid, and sodium hypochlorite can be used alone or in combination. These agents may be spray-applied to the portion where the stain remains, or may be applied using a brush or the like. Alternatively, a water-absorbent sheet containing paper or cotton may be placed over the area where the stain remains, and the above agents may be sprayed alone or in combination thereon. The contact time between the part where the stain remains and the drug may be, for example, 30 minutes to 3 hours, or 30 minutes to 1 hour. This oxidizes or dissolves the contaminant residue after the heat treatment, and removes the stain caused by the contaminant.

5. Ozone Treatment As a further optional configuration, the room may be sterilized and deodorized with ozone after the heat treatment. Specifically, the room may be filled with ozone gas generated by discharging to oxygen, or ozone water generated by electrolysis of water may be sprayed inside the room. There is no restriction on the processing time, and it may be appropriately selected from the range of, for example, 30 minutes to 3 hours, or 1 hour to 2 hours. This operation can reduce the odor caused by the filth. Note that this ozone treatment may be performed after the deodorizing treatment described later.

6. Deodorization Treatment In the cleaning method according to one embodiment of the present invention, after the heat treatment, the room may be deodorized by spraying an aqueous suspension containing photocatalyst powder as a deodorant. Examples of photocatalysts include titanium oxide (TiO ₂ ). The deodorant may further contain citric acid, an oxidizing agent, apatite, and the like. Photocatalysts are dispersed inside the room by spraying the deodorant. As a result, the substances that cause bad odors in the air are decomposed by the sunlight or the light from the room lights, so that the deodorizing effect of the room can be maintained for a long period of time. As a result, more effective deodorization becomes possible.

The cleaning method may include steps other than those described above. For example, alcohol cleaning using ethanol or isopropanol, steam cleaning using high-temperature and high-pressure steam, treatment with deodorants containing enzymes such as amylase, protease, lipase, and cellulase, and non-alcoholic organic solvents such as toluene, xylene, and acetone. Cleaning of contaminated parts used may also be included. These steps may be performed before heat treatment or after heat treatment.

As described above, in the cleaning method according to one of the embodiments of the present invention, the dirt attached to the floor, walls, pillars, ceiling, etc. of the room is subjected to heat treatment without fire. Therefore, the contaminants can be easily removed by evaporation, decomposition, or carbonization, so that the contaminants can be efficiently removed. Moreover, even if some of the waste remains, the waste is decomposed or carbonized, so that it is possible to suppress the generation of offensive odors. Furthermore, in this cleaning method, deodorizing treatment can be performed using a deodorant containing a photocatalyst. Normally, a room is constantly exposed to sunlight or room light, so the photocatalyst functions continuously and the deodorizing effect can be maintained for a long period of time.

100: Tool, 102: Dirt, 104: Contaminated part

Claims (3)

Disinfection or disinfection of rooms contaminated with filth from carcasses;
solidifying and removing the waste;
heating the part contaminated with the dirt using hot air at a temperature of 250° C. or more and 550° C. or less, and removing the stain from the heated part,
The room cleaning method, wherein the portion is at least one of a floor, a wall, a column, a ceiling, a base member of the floor, a base member of the wall, a base member of the column, and a base member of the ceiling of the room. . 2. The cleaning method of claim 1, further comprising treating said room with ozone after said heating. 2. The cleaning method of claim 1, further comprising, after said heating, treating said room with a deodorant containing a photocatalyst.

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