How to deodorize a room where a deceased person was left

Abstract

To provide a deodorization execution method for a room in which the deceased is left, by which a sufficiently high deodorization effect is obtained, the regeneration of odors after the execution of deodorization is prevented, and which is excellent in working environment and workability at the time of coating work.SOLUTION: In the deodorization execution method for a room in which the deceased is left that includes an antiseptic solution spraying process, a filth cleaning process, a demolition process, an ozone fumigation process, and a coating process, when odors are regenerated after an oily coating material is applied in the coating process to complete the deodorization, an aqueous epoxy resin coating material is re-applied after peeling the oily coating film.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a method for deodorizing a room where a deceased person has been left unattended due to a solitary death or the like. [Background technology]

[0002] "Solitary death" refers to dying alone without anyone by one's side. In recent years, with the trend toward nuclear families, the aging of the population, and the weakening of community ties, the number of solitary deaths has increased and become a social problem.

[0003] In a room where a deceased person has been left, the room becomes dirty and emits a strong odor due to the decay of the body, bodily fluids, excrement, etc. In such cases, it is necessary to clean the room, thoroughly deodorize it, and restore it to its original state.

[0004] A known method for deodorizing a room where a deceased person has been left behind is a deodorization method (Patent Document 1) that includes a dirt cleanup operation for cleaning up dirt selected from bodily fluids, feces, and urine, a dismemberment operation for dismembering the areas where the dirt is attached, an ozone fumigation operation for spraying ozone into the room after the dismemberment operation, and a covering operation for covering with paint the areas exposed during the dismemberment operation where the dirt remains after the ozone fumigation operation.

[0005] However, the method of Patent Document 1 has a major problem that the deodorizing effect is not always sufficient, probably because the paint used in the covering work is essentially an "oil-based base paint" (see Patent Document 1, paragraphs

[0053] ,

[0097] ,

[0110] , etc.), and in many cases after the deodorizing work, the odor reoccurs within a few days to a few weeks. In addition, when the paint used in the covering work is oil-based, there are problems such as a poor working environment due to the odor of the organic solvent in the paint, and poor workability because painting is not possible when the painted part is wet with water, so it is necessary to wait until it is completely dry. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6889954 Summary of the Invention [Problem to be solved by the invention]

[0007] The object of the present invention is to provide a method for deodorizing a room where a deceased person has been left behind, which solves the above-mentioned problems of the prior art, provides a sufficiently high deodorizing effect, does not cause reoccurrence of odor after deodorizing work, and is excellent in the working environment and workability during the paint coating work. [Means for solving the problem]

[0008] As a result of intensive research by the inventors to achieve the above object, they have found that when a water-based epoxy resin paint is used as the paint in the painting and covering process, a sufficiently high deodorizing effect can be obtained, and furthermore, odors do not reoccur after the deodorizing process, there is no odor of organic solvents, and the working environment is good, and even if the painted part is wet with water, painting can be done as it is, so there is no need to wait for it to dry, and workability is excellent, etc. Furthermore, they have also found that in the painting and covering process, when an oil-based paint is used as the paint and odors reoccur after the deodorizing process, if the oil-based paint film is peeled off and then the water-based epoxy resin paint is repainted, the reoccurring odor can be deodorized and will not reoccur, etc.

[0009] Based on the above findings, the inventors conducted further studies and have completed the present invention. The present invention provides a deodorizing method for a room where a deceased person has been left, as described below.

[0010] 1. A disinfectant spraying step of spraying a liquid agent containing at least one disinfectant selected from stabilized chlorine dioxide, hypochlorous acid, and sodium hypochlorite into the room where the deceased was left; a filth cleaning step of cleaning up filth including at least one of bodily fluids, excrement, and skin flakes; a dismantling step of dismantling the areas where filth has adhered or penetrated; an ozone fumigation step of spraying ozone into the room after the dismantling step; and, after the ozone fumigation step, coating the areas exposed in the dismantling step with paint. In a deodorizing method for a room where a deceased person was left, including a coating process, After applying deodorizing paint using oil-based paint, If odor reoccurs Leave, A method for deodorizing a room where a deceased person has been left behind, comprising a process of peeling off an oil-based paint film, and then a process of repainting and covering the oil-based paint film after the peeling off of the oil-based paint film, and then a process of repainting the water-based epoxy resin paint. .

[0011] 2 .The above RepaintingItem 2. The deodorizing construction method according to item 1, wherein the water-based epoxy resin paint used in the coating process is a two-component paint consisting of a base agent containing an epoxy resin and a curing agent.

[0012] 3 .The above Repainting In the coating process, the water-based epoxy resin paint is applied twice. 1 or 2 The deodorizing construction method described in.

[0013] 4 The first and second coats of water-based epoxy resin paint should each be applied at a rate of 10 to 60 g / m2 in solids. 2 The above term 3 The deodorizing construction method described in. Effect of the Invention

[0014] According to the deodorizing method of the present invention for a room where a deceased person has been left, the following remarkable effects are achieved.

[0015] (1) By using a water-based epoxy resin paint as the paint used in the coating process, a sufficiently high deodorizing effect can be obtained, and an extremely excellent deodorizing effect can be exhibited, in which odors do not reoccur after the deodorizing process. It is believed that the excellent deodorizing effect can be obtained because the water-based epoxy resin paint applied in the coating process has excellent permeability and adhesion to the painted parts. In other words, it is believed that the water-based epoxy resin paint penetrates the painted parts and fixes the odorous substances remaining inside the painted parts, and that the excellent adhesion of the formed coating film effectively blocks odors, thereby exhibiting an extremely excellent deodorizing effect.

[0016] The excellent deodorizing effect described above is also exhibited when the paint is applied to areas other than those exposed during the demolition process, such as the walls and floors of rooms. That is, the water-based epoxy resin paint penetrates into these areas, fixing the odorous substances remaining inside these areas, and the formed coating has excellent adhesion, so it effectively blocks odors, thereby exhibiting an extremely high deodorizing effect.

[0017] (2) In addition, the water-based epoxy resin paint used as paint in the coating process does not have the odor of organic solvents, making the work environment good. In addition, since no organic solvents are used, it does not harm the health of workers, and there is no risk of fire. In addition, it hardly causes any inconvenience to the neighborhood of the work site.

[0018] (3) Furthermore, the water-based epoxy resin paint used as paint in the painting and covering process can be applied as is even if the part to be painted is wet with water, so there is no need to wait for it to dry, which significantly reduces work time and provides excellent workability.

[0019] (4) In addition, in the painting and covering process, if an oil-based paint is used as the paint and an odor reoccurs after deodorization work is performed, when the oil-based paint film is peeled off and then repainted with a water-based epoxy resin paint, the reoccurring odor can be deodorized and will not reoccur.

[0020] (5) Therefore, according to the deodorizing method of the present invention, the excellent deodorizing effect can effectively eliminate odors and prevent odors from recurring, so the room can be fully restored to its original state. By restoring the room to its original state in this way, the utility value and asset value of the room can be maintained. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] How to deodorize a room where a deceased person was left The deodorizing method of the present invention for a room where a deceased person has been left behind requires the steps of spraying a disinfectant, cleaning up the filth, dismantling, fumigating with ozone, and coating, in that order, and further, if necessary, the step of spraying or applying a deodorant before the ozone fumigation step and after the dismantling step can be carried out, thereby achieving a sufficiently high and excellent deodorizing effect with no recurrence of odor.

[0022] The room where the deceased was left The type of room in which the deodorizing method of the present invention targets the deodorization of the deodorizing process, in which the deceased has been left, is not particularly limited, and includes various rooms such as homes, apartment buildings, stores, inns, restaurants, factories, warehouses, garages, etc. The material of the room to be deodorized is also not particularly limited, and may be made of wood, concrete, etc. The size of the room to be deodorized is also not particularly limited, but the lower limit of the area of ​​the room is, for example, 10 m2. 2 More than that, and 20m 2 More than that, and another 50m 2 For example, the upper limit of the room area is 200 m 2 Below, 120m 2 Below that, another 80m 2 The following rooms can be deodorized:

[0023] In addition, the time period for which the deceased has been left is not particularly limited. For example, the room in which the deceased has been left for several days to one week or more, even two weeks or more, or even one month or more may be the subject of deodorization.

[0024] The deodorizing method of the present invention will be described below in the order of steps: disinfectant spraying step, ozone fumigation step, filth cleaning step, dismantling step, disinfectant spraying or coating step, ozone fumigation step, and paint covering step.

[0025] (1) Disinfectant spraying process In the method of the present invention, a disinfectant spraying step is carried out before the waste cleaning step in order to prevent infection. The disinfectant spraying step is a step of spraying a disinfectant into the room where the deceased person was left.

[0026] As the disinfectant, it is preferable to use a liquid agent containing a disinfectant selected from stabilized chlorine dioxide, hypochlorous acid, and sodium hypochlorite, or a mixture of two or more of them. By spraying a liquid agent containing at least one disinfectant selected from stabilized chlorine dioxide, hypochlorous acid, and sodium hypochlorite, fungi, viruses, etc. in the room can be effectively removed, preventing infectious diseases and contributing to deodorizing the room.

[0027] Among disinfectants, it is particularly preferable to use a solution containing sodium hypochlorite, since it is highly effective in removing bacteria, viruses, etc. from within a room. An example of a solution containing sodium hypochlorite as the main component is "Haiter" (manufactured by Kao Corporation).

[0028] When using a liquid agent containing sodium hypochlorite, the concentration of sodium hypochlorite is preferably 500 PPM or more, more preferably 700 PPM or more, and even more preferably 900 PPM or more.By spraying a liquid agent containing sodium hypochlorite at a concentration above the lower limit, fungi, viruses, etc. in the room can be more effectively removed, so that infectious diseases can be prevented and the room can be deodorized.

[0029] (2) Ozone fumigation process In the method of the present invention, after the (1) disinfection step, an ozone fumigation step can be carried out as necessary. The ozone fumigation step is a step of spraying ozone into the room using an ozone fumigation device. By carrying out the ozone fumigation step before the filth cleaning step, viruses can be inactivated and odors can be temporarily suppressed, allowing workers to clean efficiently and also serving as a measure against neighbors.

[0030] This ozone fumigation step is preferably performed in a state where the stabilized chlorine dioxide, hypochlorous acid, or sodium hypochlorite used in the disinfection step has been wiped off, because if a large amount of these compounds with strong oxidizing power remain, the burden on the ozone fumigation device is large and may cause a breakdown. This ozone fumigation step is preferably performed by exposing to ozone at an ozone concentration of about 1 to 20 ppm for about 30 to 90 minutes.

[0031] In the ozone fumigation step, a known ozone fumigation device can be used. As the ozone fumigation device, ActivO-J (manufactured by Kai Corporation), Super Activo (manufactured by Kai Corporation), Panther-J (plasma ozone deodorizer, manufactured by Ecozone Co., Ltd.) and the like can be preferably used.

[0032] (3) Waste cleaning process The waste cleaning process is a process for cleaning up waste including one or more of bodily fluids such as blood, lymph, saliva, etc.; excrement such as feces, urine, etc.; skin flakes, etc. By performing the waste cleaning process and removing the waste, it becomes possible to reliably deodorize the room where the deceased was left in the subsequent ozone fumigation process.

[0033] The filth cleaning process is carried out by removing body fluids, excrement, skin fragments, etc. adhering to floors, walls, fittings, doors, windows, window frames, etc. with tongs or spatulas, then spraying detergent and cleaning with a brush, etc. As the detergent, an alkaline detergent is preferably used from the viewpoint of high cleaning effect, and a strong alkaline detergent is more preferably used. However, if there is a urine odor, it is preferable to use an acidic detergent for cleaning, and if the house is a garbage house and there are multiple odor-causing substances, it is preferable to use a neutral detergent or an acidic detergent for cleaning after removing the garbage.

[0034] The alkaline detergent preferably has a pH in the range of about 8 to 11, and examples thereof include solutions containing sodium sesquicarbonate, sodium bicarbonate, etc. The strong alkaline detergent preferably has a pH of about 12 or more, and examples thereof include solutions containing caustic soda, etc. The acid detergent preferably has a pH in the range of about 1.5 to 4, and examples thereof include solutions containing an acidic substance such as citric acid or a surfactant.

[0035] (4) Demolition process The demolition process is the process of demolition of the areas where filth has adhered or permeated. In many cases, the odor cannot be completely removed by the filth cleaning process, but by demolition of the surface layer of the room where the deceased was left, the odor can be completely removed from the demolition area.

[0036] In the dismantling process, specifically, wallpaper, baseboards, cushion flooring, etc. are peeled off, and floorboards, flooring, tatami mats, etc. are removed to expose the pillars, beams, foundations, framework, etc. of the room to the surface. It is preferable to clean these exposed parts in the same manner as in the filth cleaning process. This dismantling process makes it possible to more reliably deodorize the room where the deceased was left in the subsequent ozone fumigation process.

[0037] (5) Deodorant spraying or application process In the method of the present invention, it is preferable to carry out a deodorant spraying or application step after the (4) dismantling step. The deodorant spraying or application step is a step of spraying or applying a deodorant containing at least one enzyme selected from protease, lipase, amylase, and cellulase to the floor, wall, window, ceiling, etc. in the room and the parts exposed in the dismantling step before the subsequent ozone fumigation. It is preferable that the deodorant further contains an alkaline detergent such as sodium sesquicarbonate or a surfactant. After spraying or applying the deodorant containing the enzyme, it is possible to decompose protein, fat, starch, and fiber, and to perform efficient deodorization. In addition, a synergistic effect of deodorization can be achieved by combining the spraying or application of the deodorant with the subsequent ozone fumigation.

[0038] The enzymes contained in the deodorant do not need to be all four types, i.e., protease, lipase, amylase and cellulase, and may be any one type or a combination of two or more types depending on the situation.

[0039] The deodorant is preferably a liquid agent, which allows the deodorant to be efficiently sprayed or applied to floor surfaces, wall surfaces, and the like.

[0040] Examples of deodorants that contain the enzyme include Gran Bio Air (manufactured by Kai Corporation), Gran Bio Pro (manufactured by Kai Corporation), and Sesquiplus (manufactured by Sekken Hyakka Co., Ltd.).

[0041] (6) Ozone fumigation process In the method of the present invention, an ozone fumigation step is carried out after the (4) dismantling step, or after the (4) dismantling step and the (5) deodorant spraying or application step. The ozone fumigation step is a step of spraying ozone into the room using an ozone fumigation device. By carrying out the ozone fumigation step at this stage, odors can be efficiently decomposed and removed after the dirt has been cleaned and removed.

[0042] In the ozone fumigation process at this stage, it is preferable to spray ozone at a slightly higher temperature when the floor, wall, etc. are wet and humid due to cleaning after the dismantling process or by spraying or applying a deodorant, in order to increase the deodorizing efficiency. Specifically, the humidity is preferably about 60 to 100%, more preferably about 70 to 100%. The temperature is preferably about 20 to 30°C, more preferably about 24 to 28°C. If temperature and humidity need to be adjusted, an air conditioner, heater, humidifier, etc. can be used as appropriate.

[0043] The ozone fumigation step at this stage is preferably carried out by exposing to ozone at an ozone concentration of about 1 to 30 ppm. In addition, in order to prevent the ozone concentration from rising too high and the odor from leaking to the neighborhood, it is preferable to spray ozone intermittently. For example, ozone spraying is performed for about 0.5 to 3 hours and spraying is stopped for about 1 to 4 hours, and these can be repeated as necessary. The ozone exposure time is usually preferably about 1 to 24 hours.

[0044] In the ozone fumigation step, the various ozone fumigation devices described above can be used.

[0045] (7) Paint coating process (6) After the ozone fumigation process, (5) is a process of coating and covering the areas exposed in the demolition process with a water-based epoxy resin paint. By coating the areas exposed in the demolition process with a water-based epoxy resin paint, it is possible to reliably block odors originating from exposed parts of the room such as pillars, beams, foundations, and frameworks. In addition to the areas exposed in the demolition, it is also preferable to coat areas (floors, walls, etc.) that had dirt attached but were not demolished with the water-based epoxy resin paint to block remaining odors.

[0046] In the method of the present invention, it is important to use a water-based epoxy resin paint as the paint in the coating process. By using a water-based epoxy resin paint, a sufficiently high deodorizing effect can be obtained based on excellent permeability and adhesion to the painted part, and an excellent deodorizing effect is exhibited in that odor does not reoccur after deodorizing work. In addition, there are other effects such as a good working environment without the odor of organic solvents, and since the painted part can be painted as it is even if it is wet with water, there is no need to wait for it to dry, and excellent workability.

[0047] As the water-based epoxy resin paint, a one-liquid type paint containing an epoxy resin and a curing agent such as a ketiminized polyamine can be used, but it is preferable to use a two-liquid type paint consisting of a base agent containing an epoxy resin and a curing agent. The two-liquid type epoxy resin paint is a paint that is formed by mixing a base agent, which is an aqueous emulsion of an epoxy resin such as bisphenol A type epoxy resin or bisphenol F type epoxy resin, and a curing agent, which is an aqueous emulsion of amines such as aliphatic amines, alicyclic amines, aromatic amines, ketiminized products of aliphatic polyamines, modified amines such as polyamine epoxy resin adducts, just before use, and applying the paint to form a coating film. The mixing ratio is not particularly limited and is appropriately determined, but when the painted part is permeable such as wood or concrete, for example, the weight ratio of base agent:curing agent:water is about 1:1:1, and when the painted part is not permeable such as metal or plastic, for example, the weight ratio of base agent:curing agent is about 1:1. After mixing, the painting is completed within the usable time. The pot life after mixing varies depending on temperature and humidity, but is usually about 30 to 90 minutes.

[0048] It is also preferable to apply the water-based epoxy resin paint twice. After the first coat is applied and dried, the second coat is applied. In this case, if the painted area has permeability, some of the paint will penetrate into the painted area with the first coat. After application, the paint usually dries and hardens in about 30 to 90 minutes. The amount of water-based epoxy resin paint applied in the first and second coats is not particularly limited and varies depending on the type of painted area, but is usually 10 to 60 g / m2 in solid content, respectively. 2 The coating can be applied, for example, with a brush, roller, air gun, etc. After application, the coating is left to dry and harden, completing the deodorizing process and providing an excellent deodorizing effect that is sufficiently high and does not cause odor recurrence.

[0049] Deodorizing method for a room where a deceased person was left unattended, if odor reoccurs after deodorizing According to the present invention, in a deodorizing construction method for a room where a deceased person has been left behind, which includes a disinfectant spraying step, a waste cleaning step, a dismantling step, an ozone fumigation step, and a paint covering step, there is also provided a deodorizing construction method in which, in the paint covering step, an oil-based paint is used as the paint, and if an odor reoccurs after the deodorizing construction, the oil-based paint film is peeled off and then repainted with a water-based epoxy resin paint.

[0050] According to the deodorizing method when the odor reoccurs, Removes oil-based paint film Oil-based paint film removal process Next, after peeling off the oil-based paint film, Repainting with water-based epoxy resin paint Repainting By carrying out the covering step, the reoccurring odor can be eliminated, and the reoccurrence of the odor is prevented.

[0051] As described above, cases in which an odor reoccurs after deodorizing work using an oil-based paint as the paint in the paint covering process include cases in which the deodorizing work method of Patent Document 1 is carried out, and cases in which an oil-based paint is deliberately used instead of a water-based epoxy resin paint in the paint covering process of the deodorizing work method of the present invention. In these cases, the cause of odor reoccurrence is thought to be that the oil-based paint has almost no permeability into the painted part, and therefore the odorous substances that have soaked into the painted part seep out to the surface of the painted part.

[0052] According to the deodorizing method of the present invention, when odor reoccurs, the reoccurring odor can be eliminated, and odors will not reoccur again. This effect is believed to be due to the fact that the repainted water-based epoxy resin paint penetrates the painted area and fixes the odorous substances remaining inside the painted area, and the formed paint film has excellent adhesion, so it effectively blocks odors.

[0053] Oil-based paint film removal process The peeling of the oil-based paint coating film can be performed by scraping the oil-based paint coating part using hand tools such as sandpaper, wire brushes, scrapers, or power tools such as electric brushes and disk sanders, and then peeling off the coating film. The coating film can also be peeled off by applying a stripping agent or thinner to the oil-based paint coating part, leaving it for about 5 to 30 minutes, and then peeling off the coating film with a spatula or wiping it off with a cloth. Since the use of stripping agents or thinners generates odors, it is preferable to apply stripping agents or thinners and peel off the coating film using a spatula, cloth, etc., especially when the area of ​​the coating film peeled off part is small or when peeling off the coating film in a place where scraping is not easy.

[0054] After peeling off the oil-based paint film, it is preferable to spray a detergent such as an alkaline detergent or a strong alkaline detergent on the peeled off area and clean it with a brush or the like.

[0055] Repainting and coating process Next, after the oil-based paint film is peeled off, the surface is repainted with a water-based epoxy resin paint. Repainting and coating process is carried out The repainting of the water-based epoxy resin paint is a process of painting and covering the parts exposed by peeling off the oil-based paint film with the water-based epoxy resin paint. The exposed parts are usually parts exposed during demolition (pillars, beams, foundations, frameworks, etc.) and parts with dirt attached but not demolished (floors, walls, etc.). The painting of the water-based epoxy resin paint can be carried out in the same manner as the above-mentioned (7) painting and covering process. The water-based epoxy resin paint is preferably a two-liquid type paint, and it is preferable to paint twice, and the painting method and application amount are also the same. After painting, it is sufficient to dry and harden as it is, and in this way, the deodorizing work is completed in the case where an odor reoccurs after the deodorizing work because an oil-based paint was used as the paint in the painting and covering process, and a sufficiently high deodorizing effect is obtained, and an excellent deodorizing effect is exhibited in which the odor does not reoccur afterwards.

[0056] If even the slightest odor remains after application of the water-based epoxy resin paint, the remaining odor can be completely decomposed by spraying ozone into the room using an ozone fumigation device, for example, by exposing the room to ozone at an ozone concentration of about 1 to 20 ppm for about 30 to 90 minutes. EXAMPLES

[0057] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples in any way.

[0058] The deodorizing application environment and the water-based epoxy resin paint used in each example are as follows:

[0059] Deodorizing environment for rooms where the deceased was left and odor monitoring method Using the indoor environment IoT sensor pod "POD2" (manufactured by Analytixense, Inc.), the temperature, humidity, ozone (O3) concentration, hydrogen sulfide (H2S) concentration, and ammonia (NH3) concentration of the room where deodorization was being performed were monitored from the start to the end of the treatment. Of these, hydrogen sulfide (H2S) concentration and ammonia (NH3) concentration were used as indicators of room odor. With "POD2," the above items can be constantly monitored using a smartphone app in a Wi-Fi environment.

[0060] Water-based epoxy resin paint In each example, "Value painting VMP-1000" (manufactured by Value Creation Co., Ltd.) was used as the water-based epoxy resin paint. "Value painting VMP-1000" is a two-component water-based epoxy resin paint consisting of a base agent that is an epoxy resin emulsion with a solid content of 65% by weight, which is made of epoxy resin, surfactant, and water, and a curing agent that is an emulsion of modified aliphatic polyamine with a solid content of 50% by weight, which is made of modified aliphatic polyamine and water.

[0061] Example 1 Case 1 The room to be deodorized is 20 m2 in area. 2 The scene of a man's lonely death was a one-room apartment in, and the deceased had been left there for a month after his death.

[0062] Condition at the start of deodorization work The deceased was found collapsed in the passage between the entrance and the living room. Body fluids had soaked through the cushioned flooring (CF) and into the plywood. Body fluids had also soaked into the wallpaper and plasterboard near the floor, and had even fallen between the floor and the wall, flowing into the concrete foundation, creating an intense smell. The odor before the deodorizer was applied was 10.2 ppm hydrogen sulfide and 4.0 ppm ammonia.

[0063] (1) Disinfectant spraying process A disinfectant solution containing 1000 ppm of sodium hypochlorite was prepared by diluting "Haiter" (manufactured by Kao Corporation) with water. This solution was sprayed over the entire room, including the ceiling, walls, and floor, with a pressurized electric sprayer over an area of ​​20 m. 2 Disinfection was carried out by spraying about 1 liter per area.

[0064] (2) Ozone fumigation process After thoroughly wiping off the sodium hypochlorite sprayed in the disinfectant spraying process, 7500 mg / hr of ozone was sprayed for about 60 minutes using an ozone fumigation device Panther-J (manufactured by Kai Corporation). The ozone concentration was 8 to 12 ppm.

[0065] (3) Waste cleaning process A strong alkaline detergent (caustic soda solution) with a pH of 13 or higher was sprayed onto floors, walls, etc. that had dirt such as body fluids, excrement, and skin particles attached to them, and the dirt was removed with tongs and a spatula. Next, the floors, walls, etc. from which the dirt had been removed were cleaned with a brush, etc. In addition, the entrance, fixtures, doors, kitchen, windows, window frames, etc., which had odors attached to them, were cleaned with an alkaline detergent (sodium sesquicarbonate solution).

[0066] (4) Demolition process The surface of the room was dismantled, and in order to more thoroughly deodorize, the wallpaper, baseboards, cushioned flooring, and plasterboard were removed, and the floorboards and flooring were also removed. Furthermore, the floorboards underneath the cushioned flooring were also dismantled. The exposed concrete foundation and the body fluids that had flowed onto the walls were cleaned up and removed.

[0067] (5) Deodorant spraying or application process A deodorizer made of a sodium sesquicarbonate solution containing two enzymes, protease and lipase, was sprayed onto the floor, walls, windows, ceiling, etc. of the room, and the next step was started 10 minutes later.

[0068] (6) Ozone fumigation process After spraying the deodorant, the floors, walls, etc. were left damp, and the air conditioner was turned on and a humidifier was installed to maintain the temperature at 24-28°C and the humidity at 70% or higher. An ozone fumigation device Panther-J (manufactured by Kai Corporation) was then used to spray 7,500 mg / hr of ozone for approximately 1 hour, followed by two cycles of stopping for 2 hours, thereby maintaining the ozone concentration at 8-20 ppm.

[0069] (7) Paint coating process The main agent, an epoxy resin emulsion with a solid content of 65% by weight, of the two-liquid water-based epoxy resin paint "Value painting VMP-1000" (manufactured by Value Creation Co., Ltd.), the hardener, an emulsion of modified aliphatic polyamine with a solid content of 50% by weight, and water were mixed in a weight ratio of 1:1:1. The mixed paint was applied to the exposed concrete surface of the foundation, walls, etc. at a solid content of 30 g / m2. 2 The first coat was applied with a roller at a coating amount of 30 g / m2. After some of this first coat had permeated the painted area and dried for about an hour, it was again applied at a coating amount of 30 g / m2. 2 The second coat was applied using a roller with the amount of paint applied. After this second coat, it was left to dry and harden for about an hour. After this second coat, the odor was completely gone.

[0070] Odor status after deodorization work was completed After the deodorization treatment, the odors were 0ppm for hydrogen sulfide and 0ppm for ammonia. In addition, the odors from the deceased's bodily fluids were not detectable at all.

[0071] Odor status one month after deodorization work was completed One month after the deodorization treatment, the odors were 0ppm for hydrogen sulfide and 0ppm for ammonia. In addition, the odors from the body fluids of the deceased were not detectable at all.

[0072] Example 2 Case 2 The deodorizing treatment was carried out on a 2-story 4DK house with an 8-tatami Japanese-style room on the first floor, where a man had died alone and had been left there for 3 weeks after his death. The rooms to be deodorized were the entrance, the hallway, and the 8-tatami Japanese-style room on the first floor, with an area of ​​40 m2. 2 It was.

[0073] Condition at the start of deodorization work The victim was found dead on an 8-tatami mat in a Japanese-style room on the first floor, and bodily fluids had flowed into the equivalent of four tatami mats. The bodily fluids had soaked through the tatami mats and into the plywood of the base, creating a strong odor. Bodily fluids had also flowed onto the threshold, and a strong odor had spread throughout the house. Before the deodorizer was applied, the odor was 8.7 ppm for hydrogen sulfide and 5.0 ppm for ammonia.

[0074] (1) Disinfectant spraying process A disinfectant solution containing 1000 ppm of sodium hypochlorite was prepared by diluting "Haiter" (manufactured by Kao Corporation) with water. This solution was sprayed over the entire room, including the ceiling, walls, and floor, with a pressurized electric sprayer over an area of ​​40 m2. 2 Disinfection was carried out by spraying about 2 liters per area.

[0075] (2) Ozone fumigation process After thoroughly wiping off the sodium hypochlorite sprayed in the disinfectant spraying process, 7500 mg / hr of ozone was sprayed for about 60 minutes using an ozone fumigation device Panther-J (manufactured by Kai Corporation). The ozone concentration was 5 to 10 ppm.

[0076] (3) Waste cleaning process Dirt adhering to the tatami mats and thresholds was removed with tongs and a spatula. Each tatami mat was placed into a tatami bag (made of vinyl), which was then tightly sealed with masking tape and taken away. After the tatami mats were removed, the plywood on the thresholds and the lower parts of the tatami mats was washed with a strong alkaline detergent (caustic soda solution) with a pH of 13 or higher. Furthermore, after thoroughly wiping off the alkaline detergent, the parts that smelled of urine were also washed with an acidic detergent (aqueous solution containing citric acid and a surfactant). The pillars, windows, window frames, etc. of the room were also washed with an alkaline detergent (aqueous solution of sodium sesquicarbonate).

[0077] (4) Demolition process In this case, a large amount of body fluids had soaked into the plywood underneath the removed tatami mats, so the plywood was dismantled and removed. After that, the pillars, beams, and concrete foundation that had soaked into the body fluids were thoroughly cleaned.

[0078] (5) Deodorant spraying or application process A deodorant ("Sesquiplus", manufactured by Sekken Hyakka Co., Ltd.), which is an aqueous solution of sodium sesquicarbonate containing four types of enzymes - protease, lipase, amylase, and cellulase - was sprayed onto the floor, walls, windows, ceiling, etc. of the room, and the next step was started 10 minutes later.

[0079] (6) Ozone fumigation process After spraying the deodorant, the floors, walls, etc. were damp, and since there was no air conditioning, an electric heater and humidifier were installed to maintain the temperature at 24-28°C and the humidity at 70% or higher. Ozone fumigation was then carried out using an ozone fumigation device Panther-J (manufactured by Kai Corporation) by spraying 7,500 mg / hr of ozone for approximately 2 hours followed by two cycles of stopping for 4 hours, maintaining the ozone concentration at 8-20 ppm.

[0080] (7) Paint coating process The main agent, an epoxy resin emulsion with a solid content of 65% by weight, of the two-liquid water-based epoxy resin paint "Value painting VMP-1000" (manufactured by Value Creation Co., Ltd.), and the hardener, an emulsion of modified aliphatic polyamine with a solid content of 50% by weight, were mixed in a weight ratio of 1:1:1. The mixed paint was applied at 30 g / m2 (solid content) to exposed concrete foundations and to areas where odors could not be completely removed by washing alone, such as thresholds, pillars, and beams soaked in body fluids. 2 The first coat was applied with a roller at a coating amount of 30 g / m2. After some of this first coat had permeated the painted area and dried for about an hour, it was again applied at a coating amount of 30 g / m2. 2The second coat was applied using a roller with the amount of paint applied. After this second coat, it was left to dry and harden for about an hour. After this second coat, the odor was completely gone.

[0081] Odor status after deodorization work was completed After the deodorization treatment, the odors were 0ppm for hydrogen sulfide and 0ppm for ammonia. In addition, the odors from the deceased's bodily fluids were not detectable at all.

[0082] Odor status one month after deodorization work was completed One month after the deodorization treatment, the odors were 0ppm for hydrogen sulfide and 0ppm for ammonia. In addition, the odors from the body fluids of the deceased were not detectable at all.

[0083] Example 3 Case 3 One-room apartment (45m 2 ) where a man had died alone three weeks after his death, and deodorizing work was carried out by another company, including cleaning up the waste, dismantling, ozone fumigation, and painting and covering the building with an oil-based primer. The odor was gone when the work was completed, but a few days later, the odor reappeared, so 10 days after the work was completed by the other company, the apartment management company requested our company to carry out another deodorizing work. When we investigated the scene, we found that the deceased had died on the flooring, and that his body fluids had flowed from the wall onto the concrete foundation. The flooring had been dismantled, but an oil-based primer had been applied to the concrete foundation, and the room was filled with an unpleasant odor that was a mixture of the odor of the oil-based primer and the putrefactive odor from the concrete foundation, and the odor could not be blocked at all. The odor before our deodorizing work was 6 ppm hydrogen sulfide and 4 ppm ammonia.

[0084] (1) Oil-based base paint film removal process 200-300ml of "paint remover" (made by Asahipen Co., Ltd., ingredients: organic solvent, surfactant) was applied to the oil-based primer coating that had been applied to an area about the size of one tatami mat on a concrete foundation, and after leaving it for about 20 minutes, the coating was peeled off with a spatula and wiped off with a cloth. The coating was also partially peeled off with sandpaper. It took about 60 minutes to completely peel off the oil-based primer coating.

[0085] After the oil-based paint film was peeled off, an aqueous solution of caustic soda was sprayed over the entire area that had been peeled off, and the area was cleaned with a brush.

[0086] (2) Repainting and coating process The main agent, an epoxy resin emulsion with a solid content of 65% by weight, of the two-liquid water-based epoxy resin paint "Value painting VMP-1000" (manufactured by Value Creation Co., Ltd.), the hardener, an emulsion of modified aliphatic polyamine with a solid content of 50% by weight, and water were mixed in a weight ratio of 1:1:1. The mixed paint was applied to the areas exposed by the above-mentioned coating film peeling process, specifically, the foundation concrete floor surface exposed by the demolition, at a solid content of 30 g / m. 2 The first coat was applied with a roller at a coating amount of 30 g / m2. After some of this first coat had permeated the painted area and dried for about an hour, it was again applied at a coating amount of 30 g / m2. 2 The second coat was applied using a roller with the amount of paint applied. After this second coat, it was left to dry and harden for about an hour. After this second coat, the odor was completely gone.

[0087] Odor status after deodorization work was completed After the deodorization treatment, the odors were 0 ppm for hydrogen sulfide and 0 ppm for ammonia. In addition, there was no odor from the body fluids of the deceased.

[0088] Odor status one month after deodorization work was completed In the above odor recurrence case, the odors one month after the deodorization treatment were 0ppm for hydrogen sulfide and 0ppm for ammonia. In addition, no odors originating from the deceased's bodily fluids were detected at all. [Industrial Applicability]

[0089] The deodorizing method of the present invention has a high deodorizing effect on a room where the deceased has been left, and furthermore, since odor does not reoccur after the deodorizing method is applied and the room can be fully restored to its original state, it is suitably used for deodorizing a room where the deceased has been left.

Claims

1. A method for deodorizing a room where a deceased person has been left behind, comprising: a disinfectant spraying step of spraying into the room where the deceased person has been left behind a liquid agent containing at least one disinfectant selected from stabilized chlorine dioxide, hypochlorous acid, and sodium hypochlorite; a filth cleaning step of cleaning up filth including one or more of body fluids, excrement, and skin flakes; a dismantling step of dismantling areas where filth has adhered or penetrated; an ozone fumigation step of spraying ozone into the room after the dismantling step; and a paint covering step of coating and covering areas exposed in the dismantling step after the ozone fumigation step, wherein in the paint covering step, an oil-based paint is used as the paint and if an odor reoccurs after the deodorizing work is performed in the paint covering step, This deodorizing method for a room where a deceased person has been left behind includes an oil-based paint film peeling step of peeling off the oil-based paint film, and then a repainting and covering step of repainting the oil-based paint film after the oil-based paint film peeling.

2. A deodorizing construction method as described in claim 1, wherein the water-based epoxy resin paint used in the repainting coating process is a two-component paint consisting of a base agent containing an epoxy resin and a curing agent.

3. A deodorizing construction method as described in claim 1 or 2, wherein in the repainting and coating process, a water-based epoxy resin paint is applied twice.

4. The deodorizing construction method according to claim 3, wherein the first and second coating amounts of the water-based epoxy resin paint are each 10 to 60 g / m 2 in terms of solid content.