JP2003019414A - Method of removing volatile organic material contained in building material in room of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of removing volatile organic materials which is capable of assuring the environment of not producing the volatile organic materials within the room of a building for a long period. SOLUTION: Volatile organic material-adsorbing sheets are laid to cover the base surfaces of the shelf boards, drawers, etc., of fittings and furniture, and the rising sections rising from the ends of the base surfaces of the shelf board and the drawers are covered by the volatile organic material-adsorbing sheets. Next, indoor air is blown by a fan, etc., to the points where the volatile organic material-adsorbing sheets are installed to stir the air at these points and to cause the air at the points of the building materials installed with the volatile organic material-adsorbing sheets to flow, thereby promoting the release of the volatile organic materials from the building materials constituting the fittings and the furniture. The volatile organic materials released from the building materials are adsorbed to the volatile organic material-adsorbing sheets.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing volatile organic substances generated from building materials inside a building.

[0002]

2. Description of the Related Art When a volatile organic substance generated from a building material or the like accumulates in indoor air after the construction of a building, there is no conventional method for forcibly removing such a volatile organic substance. There was a natural ventilation method in which the doors were opened and the ventilation was performed, and the air was released to the outside to reduce it.

[0003]

However, natural ventilation by opening windows or doors requires a long period of time, and if it is done for a long period of time, the indoors may be contaminated by dust or rain outside. Furthermore, in bad weather, natural ventilation cannot be performed by opening windows or doors. In particular, fixtures and furniture, or volatile organic substances generated from the floor are large in quantity, and since fixtures and furniture are closed, formaldehyde and acetaldehyde emitted from shelves, toluene emitted from adhesives, Xylene, etc. will not radiate forever and will stay in the building materials,
Emission of volatile organic substances was sustained for a long time. Therefore, it was greatly involved in increasing the concentration of volatile substances in the room. The present invention has been devised in view of the above circumstances, and an object of the present invention is to ensure a long-term environment in which no volatile organic substances are generated and the room is not contaminated by dust or rain even in bad weather. It is to provide a method for removing volatile organic substances that can be used.

[0004]

In order to achieve the above object, the present invention is to install a sheet for adsorbing a volatile organic substance on a fitting or furniture, and to install indoor air at a place where the sheet for adsorbing a volatile organic substance is installed. Agitate the air in the location by applying a volatile organic substance to the volatile organic substance adsorption sheet while accelerating the release of the volatile organic substance from the building material that constitutes the fittings and furniture by stirring the air. It is characterized by being adsorbed. Further, the present invention installs a volatile organic substance adsorption sheet on the floor of the living part, applies room air to the place where the volatile organic substance adsorption sheet is installed, and agitates the air in the place, It is characterized in that the volatile organic substance is adsorbed to the volatile organic substance adsorption sheet while the release of the volatile organic substance from the building material constituting the floor surface is promoted by stirring the air.

According to the present invention, the content of volatile organic substances in fittings, furniture, and building materials themselves on the floor is reduced, so that an environment free from volatile organic substances can be guaranteed for a long period of time.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. In the present invention, a volatile organic substance adsorbing sheet is installed on fittings and furniture. In this case, the volatile organic substance adsorbing sheet has a bottom area of 1.
Those having an area of 1 time or more are used. Then, the volatile organic substance adsorption sheet, a shelf board of fittings and furniture,
The sheets are spread so as to cover the bottom surface of the drawer or the like, and the rising portions rising from the end portions of the bottom surface of the shelf plate or the drawer are covered with the volatile organic substance adsorption sheet. The reason why the rising portion rising from the end of the bottom of the shelf or the drawer is covered with the volatile organic substance adsorption sheet is that a large amount of the volatile organic substance is released from the rising portion.

Next, room air is blown to the place where the volatile organic substance adsorption sheet is installed by a fan or the like to stir the air in the place. In this case, if the fittings and furniture have openings such as doors and drawers,
The air in the above-mentioned place is agitated while the opening is opened. By agitating the air in the location, the air in the building material location where the volatile organic substance adsorption sheet is installed flows without stagnation, and the release of the volatile organic material from the building material that constitutes the fittings and furniture is promoted. To be done. Then, the volatile organic substance released from the building material is adsorbed on the volatile organic substance adsorption sheet. In this way, the volatile organic substances accumulated in the fittings and furniture are removed, and the volatile organic substances accumulated in the fittings and furniture are reduced. To reduce.

In the present embodiment, the volatile organic substance generated from the fitting or furniture is directly adsorbed on the fitting or furniture where the volatile organic substance is generated by the volatile organic substance adsorbing sheet. Volatile organic substances accumulated in furniture can be effectively reduced. Therefore, the volatile organic substance content of the fittings and furniture can be effectively reduced, and hence the VOC concentration (volatile organic substance concentration) in the indoor air can be maintained at a low value thereafter.

Further, in the present invention, a volatile organic substance adsorbing sheet is installed on the floor surface. Next, indoor air is applied to the location where the volatile organic substance adsorption sheet is installed by a fan or the like to stir the air in the location. By agitating the air in the location, the air in the building material location where the volatile organic substance adsorption sheet is installed flows without stagnation, and the release of volatile organic materials from the building material that constitutes the floor surface is promoted. It Then, the volatile organic substance released from the building material is adsorbed on the volatile organic substance adsorption sheet. In this way, the volatile organic substances accumulated on the floor surface are removed, and the volatile organic substances accumulated on the floor surface are reduced.

In this embodiment, since the volatile organic substance adsorbing sheet directly adsorbs the volatile organic substance generated from the floor surface on the floor surface where the volatile organic substance is generated, the volatile organic substance is accumulated on the floor surface. The generated volatile organic substances can be effectively reduced. Therefore, the volatile organic substance content on the floor can be effectively reduced, and hence the VOC concentration (volatile organic substance concentration) in the air in the room can be maintained at a low value thereafter.

In the present invention, the fitting means the one installed from the time of construction in a single-family house or an apartment house. Examples include clogs, closets, chests, sideboards, washbasins, kitchens, kitchen cabinets, built-in bookshelves, closets, underfloors, and sheds. Further, in the present invention, furniture is brought into a house later, and examples thereof include clothes dance, bookshelves, desks, chairs, reception sets, bench chests, and Japanese dances. In the present invention,
The fan that applies indoor air to the place where the volatile organic substance adsorption sheet is installed and agitates the air in the place includes a fan, an air conditioner, and the like.

As the material of the volatile organic substance adsorption sheet, an adsorbent containing a porous substance as a component can be used. Examples of the porous material in this case include activated carbon, plaster, diatomaceous earth, photocatalysts such as titanium oxide, Bincho charcoal, cork material, and silica gel. Then, these are formed into a sheet and used. The form of the sheet is such that the adsorbent is sandwiched by a material having good air permeability such as non-woven fabric, Japanese paper, processed paper, or gauze, or the adsorbent is impregnated, or the adsorbent is woven into a cloth. Etc.
Materials such as the non-woven fabric, Japanese paper, processed paper, and gauze can be disposed of as combustible waste, and the sheet for adsorbing volatile organic substances does not become industrial waste after use. Materials such as non-woven fabric, Japanese paper, processed paper, and gauze can be conveniently placed on which shoes and clothes can be placed.

By heating the room, the fittings, furniture, and the floor surface are also heated, and the release of volatile organic substances from the fittings, the furniture, and the floor surface is promoted. Then, during heating, the concentration in the air gradually increases due to the release of volatile organic substances, and eventually an equilibrium state is reached, and the release rate weakens. Therefore, by adsorbing the volatile organic substances floating in the room with an adsorbent, or by adsorbing the volatile organic substances floating in the room with an air purifier, or by ventilating the room with a ventilation fan, etc. The concentration of volatile organic substances is reduced by discharging the volatile organic substances floating in the room to the outside. By lowering the concentration of the volatile organic substances in this way, the release of the volatile organic substances from the building material can be promoted again, and the volatile organic substance adsorption sheet can more effectively adsorb and remove the volatile organic substances.

Examples of heating methods include electric heaters, gas heaters, other stoves, hot carpets, and air conditioner floor heating. These raise the room temperature. Room temperature is preferably 30 ° C. or higher, preferably 35 ° C. or higher. The heating time is effective even if 0.1 hour or more, but preferably 5 hours or more. Ventilation is performed after heating, but 30 minutes or more is preferable. It is also affected by the size of the room and the surface area of fittings and furniture. When the odor of volatile organic substances is severe, ventilation can be performed for 30 minutes or more by opening the window before heating to further improve the effect.

Volatile organic substances such as toluene and xylene can be used after the volatile organic substance adsorption sheet is installed, or
By lowering the indoor humidity with a dehumidifier during heating, it is possible to further increase the emission amount of volatile organic substances from fittings, furniture, and building materials constituting the floor surface. In addition, water-soluble volatile organic substances such as formaldehyde, acetaldehyde, alcohols, etc. can be removed from the building materials after installing the volatile organic substance adsorption sheet or by increasing the indoor humidity with a humidifier during heating. The emission amount of the volatile organic substances can be further increased. Then, dehumidifying or humidifying the room accelerates the release of volatile organic substances from the building materials, but the release of volatile organic substances releases the volatile organic substances when the concentration in the air gradually rises and reaches an equilibrium state. The speed slows down. Therefore, as in the case of heating, by adsorbing volatile organic substances floating in the room with an adsorbent, or
By adsorbing the volatile organic substances floating in the room with an air purifier, or exhausting the volatile organic substances floating in the room by ventilating the room with a ventilation fan etc. And further promote the release of volatile organic substances from building materials.

[0016]

[Example] In a room of 20.5 square meters with the same type of one-room layout, the following reduction plan was applied. Interior fittings-Large closet (inner method 600 mm x 60
0mm x 1800mm 3 shelves) 2 indoor furniture-writing desk method (inner method 600mm x 9)
00mm x 1200mm Drawer internal method 600mm x
600mm x 100mm is 2 steps)

Example 1 The windows, doors and doors of fitting furniture were closed for 72 hours without using the sheet for adsorbing volatile organic substances. Example 2 The windows and doors of the room were closed and closed for 72 hours.
The closet shelves, desk drawers, tops, and bookshelves were covered with a volatile organic substance adsorbing sheet with an area 1.1 times larger than the inner dimension, and the door of the fitting was opened. Air was circulated in the room with a fan. Example 3 A window and a door of a room are closed, and a shelf for a closet, a desk drawer, a top plate, and a bookshelf part are covered with a sheet for adsorbing a volatile organic substance to an area 1.1 times as large as an inner size, and a fitting door is provided. I opened it. Air was circulated in the room with a fan.
The room was heated to 30 ° C. with an electric stove for 8 hours / day, and after heating, the windows and doors of the room were opened for 1 hour to ventilate the room.
This operation was repeated for 72 hours (3 days). Example 4 The windows and doors of the room are closed, and the closet shelves, desk drawers, tops, and bookshelf parts are covered with a sheet for adsorbing volatile organic substances to an area 1.1 times larger than the inner dimension, and a door for fittings is spread. I opened it. Air was circulated in the room with a fan.
The room was heated for 8 hours / day with an electric stove, heated to 30 ° C., and then the room window and door were opened for 1 hour to ventilate the room.
The humidifier was operated during heating to adjust the humidity to 90 ° C or higher. 7
This operation was repeated for 2 hours (3 days).

As the volatile organic substance adsorbing sheet, a sheet in which activated carbon was sandwiched between non-woven fabrics was used. For each example, the measurement was performed before and after the implementation work. For formaldehyde, acetaldehyde, and acetone, after collecting 10 liters of gas with a DNPH absorption tube,
Quantitative analysis was performed by liquid chromatography. For toluene, xylene, and styrene, 2 liters of expectation was collected with a TENAX absorption tube, and then quantitatively analyzed with a thermal desorption apparatus and a gas chromatograph mass spectrometer. The results are shown in Table 1.
Shown in.

[0019]

[Table 1]

From Table 1, it is clear that the present invention can efficiently remove volatile organic substances from building materials in a short time.

[0021]

According to the present invention, the volatile organic substances accumulated on the fittings, furniture and floor are directly adsorbed on the fittings, furniture and floor where they are generated by the volatile organic substance adsorption sheet. Therefore, the volatile organic substances can be efficiently removed from the building materials such as fittings, furniture and floors, and the VOC (volatile organic substance) concentration in the indoor air can be effectively reduced. Further, in the present invention, since the volatile organic substance adsorbing sheet directly adsorbs the volatile organic substance on the fittings, furniture, and floor surface, it takes less time to ventilate, and therefore the VOC does not depend on the outside weather. It is possible to reduce the concentration. In addition, the indoor V
The OC concentration can be effectively reduced, and since volatile organic substances are directly adsorbed on the fittings, furniture, and floor surfaces where they are generated, VOCs in the room can be obtained even without ventilation.
The concentration can be reduced. It should be noted that VOCs are also generated from a cleaning material for clothes, shoe creams, insect repellents, etc. stored inside fittings and furniture, but these can also be reduced at the same time. In addition, since volatile organic substances are efficiently removed from the building materials that make up the fittings, furniture, and floor surfaces, and the volatile organic substance content of the building materials themselves on the fittings, furniture, and floor surfaces is reduced,
It is possible to guarantee a long-term environment free of organic substances.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2E001 DH00 FA00 FA11 GA05 GA24                       GA25 GA26 GA28 HA00 HC05                       HC06 KA08 LA08 MA01 MA04                 4C080 AA05 BB02 CC02 CC12 HH05                       HH09 JJ06 KK08 LL02 LL10                       MM02 MM05 MM06 MM31 NN22                       QQ12 QQ16 QQ17                 4D012 CA09 CA10 CA11 CB03 CG01                       CK07

Claims (9)

[Claims] 1. A volatile organic substance adsorbing sheet is installed on fittings or furniture, and indoor air is applied to the place where the volatile organic substance adsorbing sheet is installed to agitate the air in the place, A volatile organic substance is adsorbed to the volatile organic substance adsorption sheet while accelerating the release of the volatile organic substance from a building material that constitutes furniture by stirring the air. How to remove substances. 2. A volatile organic substance adsorbing sheet is installed on the floor of a living part, and indoor air is applied to the place where the volatile organic substance adsorbing sheet is installed to agitate the air in the place, The volatile organic substance is adsorbed to the volatile organic substance adsorption sheet while the release of the volatile organic substance from the building material constituting the floor surface is accelerated by stirring the air, and the volatile organic substance is adsorbed on the volatile organic substance adsorption sheet. Method of removing organic substances. 3. The sheet for adsorbing volatile organic substances is spread so as to cover the bottoms of shelves, drawers and the like of fittings and furniture, and the rising portion rising from the end of the bottom of the shelves and drawers is volatile. The method for removing a volatile organic substance according to claim 1, characterized in that it is covered with an organic substance adsorption sheet. 4. The method according to claim 1, wherein after the sheet for adsorbing the volatile organic substance is installed, the inside of the room is ventilated with a range hood, a ventilation fan or the like to reduce the concentration of the volatile organic substance in the room. The method for removing volatile organic substances according to item 1. 5. The air purifier is installed in the room after the sheet for adsorbing the volatile organic substances is installed, and the concentration of the volatile organic substances in the room is lowered by the air cleaner. The method for removing a volatile organic substance according to any one of items. 6. After the sheet for adsorbing volatile organic substances is installed, the room is heated by a heating device or the like to raise the room temperature to accelerate the emission of volatile organic substances from the building materials, and then the room is ventilated. The method for removing volatile organic substances according to any one of claims 1 to 3, wherein the concentration of volatile organic substances in the room is reduced. 7. The heating time is within 23 hours a day,
The method for removing volatile organic substances according to claim 6, characterized in that ventilation is performed for 30 minutes or more per day and the heating and ventilation cycles are repeated. 8. The installation of the volatile organic substance adsorption sheet, after which the indoor humidity is reduced by a dehumidifier, and then the indoor ventilation is performed to reduce the concentration of the volatile organic substances in the room. 4. The method for removing a volatile organic substance according to any one of 1 to 3. 9. The volatile organic substance adsorbing sheet is installed, the indoor humidity is raised by a humidifier, and then the indoor ventilation is performed to lower the indoor volatile organic substance concentration. 4. The method for removing a volatile organic substance according to any one of 1 to 3.