CN111036066A - Indoor/in-vehicle formaldehyde-removing air purification treatment construction process - Google Patents
Indoor/in-vehicle formaldehyde-removing air purification treatment construction process Download PDFInfo
- Publication number
- CN111036066A CN111036066A CN201911422739.0A CN201911422739A CN111036066A CN 111036066 A CN111036066 A CN 111036066A CN 201911422739 A CN201911422739 A CN 201911422739A CN 111036066 A CN111036066 A CN 111036066A
- Authority
- CN
- China
- Prior art keywords
- indoor
- formaldehyde
- purification treatment
- construction process
- spraying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention provides an indoor/in-vehicle formaldehyde-removing air purification treatment construction process, which relates to the technical field of air purification treatment and comprises the following steps: (1) carrying out surface spraying treatment on all indoor walls and ceilings by using a quick-acting composite formaldehyde clean solution, wherein the usage amount per square meter is 15-25 ml; (2) the nano purifying treatment agent is used for spraying indoor air and carrying out comprehensive spraying treatment on furniture and interior trimming panels, and the usage amount per square meter is 15ml-25 ml. The indoor/interior formaldehyde-removing air purification treatment construction process provided by the invention starts from two aspects of radically reducing the release of formaldehyde and removing the released formaldehyde, and has a good effect of removing indoor formaldehyde.
Description
Technical Field
The invention relates to the technical field of air purification treatment, in particular to an indoor/in-vehicle formaldehyde-removing air purification treatment construction process.
Background
Harmful gases causing air pollution in interior decoration include: formaldehyde, benzene, toluene, xylene, ammonia, TVOC, and the like. Common pollution sources of these indoor harmful gases include wall decoration materials (paints, coatings, wallpaper, wall cloth, hangers, etc.), ceiling decoration materials (coatings, ceiling tiles, ceiling decoration parts, etc.), floor decoration materials (floor tiles, floor carpets, floor glue, floor paint, floor coating, etc.), indoor furniture (sofas, curtains, wardrobes, filing cabinets, tables, chairs, pendants, doors, windows, beds, etc.), and these materials release a large amount of harmful gases such as formaldehyde, benzene series, ammonia, etc.
Formaldehyde is a colorless irritant gas that can cause lacrimation, laryngeal discomfort, nausea, vomiting, cough, chest distress, asthma and even emphysema, is a carcinogen, and is a toxic and harmful pollutant. The existing methods for removing formaldehyde mainly start from two aspects, namely, radically reducing the release of formaldehyde on the one hand, and removing the released formaldehyde on the other hand. The former corresponds to the actual decoration, and the first can be as far as possible not design or design few decorative modeling, such as wall, video wall, etc., this is accomplished more easily, and the second uses more environmental protection timber product, such as the furniture product of pure wood. The latter is utilized to remove the released formaldehyde, and the current formaldehyde removing methods on the market mainly comprise professional formaldehyde removing companies, photocatalyst formaldehyde removing, and removal of formaldehyde by utilizing bamboo charcoal, diatom ooze, plants and a direct ventilation mode.
The above prior art has the following disadvantages: in order to radically reduce the release of formaldehyde, environment-friendly wood products, such as solid wood furniture products, are used, but the cost of pure solid wood furniture products is relatively high, so that in most cases, the release of formaldehyde is difficult to radically reduce, and the people tend to select to remove indoor formaldehyde from the aspect of removing the released formaldehyde: a professional formaldehyde removing company is found, 99 percent of the formaldehyde removing companies can only remove formaldehyde dissociated in indoor air at present, so that the indoor formaldehyde content is under the safety standard in a short time, and the indoor pollution source still releases formaldehyde in a later time, so that the indoor formaldehyde content is increased; the method for removing formaldehyde by the photocatalyst actually adopts 'light' which is ultraviolet light and is directly irradiated for a long time without shielding, but cannot be decomposed under common indoor illumination; the bamboo charcoal has the function of adsorbing formaldehyde, but is only suitable for adsorbing formaldehyde in a small range, because the capacity of adsorbing formaldehyde by carbon molecules is very limited, the formaldehyde in a decorated house is required to be completely adsorbed, the volume of the required bamboo charcoal is measured by ton, and the formaldehyde adsorbed by the bamboo charcoal can be released by insolation, so that secondary pollution is caused; the effect of removing formaldehyde by the diatom ooze is lower than that of adsorbing formaldehyde by bamboo charcoal, so that the diatom ooze is not a good choice for removing formaldehyde; similarly, the purpose of removing formaldehyde by using plants is achieved, and unless the number of the plants is large, the effect of removing formaldehyde is also very little; the problem cannot be solved fundamentally by only ventilation, and the ventilation is not the optimal choice for removing formaldehyde. Similarly, the removal of formaldehyde from the air in a vehicle also has the above-mentioned problems. In order to solve the problems, no good method for treating formaldehyde in rooms and vehicles exists at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an indoor/in-vehicle formaldehyde-removing air purification treatment construction process, which starts from two aspects of radically reducing the release of formaldehyde and removing the released formaldehyde and has good effect on removing the indoor formaldehyde.
In order to achieve the purpose, the invention provides the following technical scheme: an indoor/interior formaldehyde-removing air purification treatment construction process comprises the following steps:
(1) carrying out surface spraying treatment on all indoor walls and ceilings by using a quick-acting composite formaldehyde clean solution, wherein the usage amount per square meter is 15-25 ml;
(2) the nano purifying treatment agent is used for spraying indoor air and carrying out comprehensive spraying treatment on furniture and interior trimming panels, and the usage amount per square meter is 15ml-25 ml.
By adopting the technical scheme, the indoor/in-vehicle formaldehyde-removing air purification treatment construction process provided by the invention comprises the following main steps of firstly spraying quick-acting composite formaldehyde clean solution into the room to remove free formaldehyde, benzene series, TVOC and other harmful gases in the room, and mainly aiming at the released formaldehyde and other harmful gases in the room; and secondly, spraying a nano purification treatment agent into the room, wherein the nano purification treatment agent can form a microporous spongy slow-release film on the surface of indoor furniture or plates, so that indoor air is separated from a formaldehyde 'release source', the formaldehyde 'release source' is slowed down, formaldehyde and other harmful gases are released into the room, the nano purification treatment agent is mainly used for fundamentally reducing formaldehyde release and removing released formaldehyde, and the quick-acting composite formaldehyde cleaning solution and the nano purification treatment agent are used for removing indoor formaldehyde.
Further, the manufacturer of the quick-acting compound formaldehyde purification solution in the step (1) is Beijing Laiwayao environmental protection technology Co.
Further, the quick-acting composite formaldehyde purification solution in the step (1) comprises the following components in percentage by volume: 10 to 40 percent of hydrolyzed soybean protein, 5 to 25 percent of tea polyphenol, 10 to 25 percent of hydroxymethyl cellulose and 10 to 75 percent of deionized water.
By adopting the technical scheme, the quick-acting composite formaldehyde clean solution used by the invention has two types, one type is a solvent directly bought from a manufacturer, and the other type is developed by the user. The main components of the quick-acting composite formaldehyde cleaning solution developed by the self comprise hydrolyzed soy protein, hydroxymethyl cellulose, tea polyphenol and deionized water, the quick-acting composite formaldehyde cleaning solution is suitable for various wood paints and pollution such as formaldehyde, benzene, TVOC and the like volatilized inside and outside board furniture (tables and chairs, shoe cabinets, television cabinets, wood beds, wood floors and wood paint furniture), has a reinforced degradation function, and can carry out strong neutralization and degradation reaction on free formaldehyde, benzene series and TVOC in the wood boards and the paint furniture by adopting amino acid extracted from biological soy protein, catechin in the tea polyphenol and the hydroxymethyl cellulose. When the surface cleaning agent is used, the surface of a pollution source of a treatment target is cleaned, no water, floating dust and other stains are ensured, the use times are properly increased according to the pollution degree, and the secondary spraying time is based on surface drying. After the reaction, a layer of white powder is formed on the surface of the wooden plate material and paint furniture, and the higher the formaldehyde concentration in the room, the more white powder is formed on the surface of the furniture. Before the next operation, the white powder on the surface of the furniture needs to be wiped off, so that the operation effect of spraying the purifying treatment agent in the next step is prevented from being influenced.
Further, the manufacturer of the nano purification treatment agent in the step (2) is Beijing Laiwayo Jia environmental protection technology Co.
Further, the components and volume percentages of the nano purification treatment agent in the step (2) are as follows: 20% -50% of nano-micro molecular titanium dioxide phosphate: 10% -40% of nano silicon dioxide: 10 to 70 percent of deionized water.
By adopting the technical scheme, the nano purifying treatment agent used by the invention has two types, one type is a solvent directly bought from a manufacturer, and the other type is developed by the user. The nano-micro molecular titanium dioxide phosphate and the nano-silicon dioxide in the self-developed nano purifying treatment agent have strong adsorbability, generate high-energy heterotopic reaction by utilizing the potential transfer characteristic of nano particles, can generate redox reaction under the condition of no light, generate hydroxide radical, can greatly and continuously eliminate harmful gases such as formaldehyde, benzene, TVOC and the like, and simultaneously play the roles of deodorization, antibiosis, mildew prevention, pollution prevention and air purification. Compared with the traditional photocatalyst, the product does not need ultraviolet irradiation, can continuously play a role for 24 hours, forms a colorless transparent microporous sponge slow-release film with the hardness of 8H on the surface of a pollution source, can not fall off after being frequently wiped, effectively prevents the harmful substances from being adsorbed again for a long time, has no toxic or side effect after being detected by an authoritative institution, and does not influence the use in residence. The microporous sponge slow-release film formed on the surface of the pollution source is a nano plugging coating, and the path of formaldehyde and other harmful gases continuously released to the room from the pollution source is plugged. In addition, the nano plugging coating can release nano particles indoors to remove free formaldehyde and other harmful gases in the air, and can release the nano particles to the inside of a pollution source to remove the formaldehyde and other harmful gases in the pollution source. The nano purifying treatment agent is suitable for pollution such as toluene, benzene, TVOC and the like volatilized by pollution sources such as house decoration, child houses, pregnant woman rooms, kindergartens, nursing homes, children furniture, rocking chairs, children toys, children crawling pads and the like, and has the functions of enhancing antibiosis, deodorization, degradation and the like. When the device is used, the surface of a pollution source of a treatment target is cleaned, so that no water, floating dust and other stains exist, the use times are properly increased according to the pollution degree, and the surface of a sprayed object can be cleaned.
Further, before the step (1), a silver ion deodorant is used for spraying indoor air and carrying out surface spraying treatment on furniture, the ground or interior trim panels, wherein the manufacturer of the silver ion deodorant is Beijing Laiwayo environmental protection technology Co.
By adopting the technical scheme, after indoor decoration, if paint surface furniture, carpets, floor adhesive floors, wood floors and indoor decorative boards exist indoors, toxic gases such as formaldehyde and the like can be released indoors by the pollution sources, so that pungent odor can be generated indoors, and before the quick-acting composite formaldehyde cleaning solution and the nano purification treatment agent are sprayed, the silver ion deodorant is sprayed into indoor air, or the silver ion deodorant is sprayed onto the indoor pollution sources, so that the indoor pungent odor is removed, and the indoor no peculiar smell or pungent odor is ensured. Meanwhile, the harm to workers entering the room for subsequent operation is reduced. Silver ions are positive ions carrying positive charges, are formed by electron transfer through chemical reaction, generally exist in the form of aqueous solution, are colorless and transparent in solution, do not have any solid particles, mainly utilize potential reaction of the silver ions, and perform electrolytic neutralization aiming at other ions volatilized from the paint, so as to play a role in degrading peculiar smell of the paint. When the surface cleaning agent is used, the surface of a pollution source of a treatment target is cleaned, no water, floating dust and other stains are ensured, the using amount per square meter is 20ml-30ml, the using times are properly increased according to the pollution degree, and the interval time of secondary spraying is based on surface drying. The silver ion deodorant is suitable for various household, outdoor, instrument and other surface paint pollution sources, can quickly degrade the volatilization peculiar smell of the paint, has strong antibacterial, mildew-proof and deodorization effects, and has no toxic or side effect on people and pets.
Further, before the step (1), surface spraying treatment is carried out on all the bare board-mounted furniture by using a bare board polymer plugging agent, wherein a manufacturer of the bare board polymer plugging agent is a limited company of Beijing Laiwayo Jia environmental protection technology.
By adopting the technical scheme, the naked plate type furniture is sometimes used in indoor decoration, the naked plate type furniture is one of the sources of indoor formaldehyde, and the corresponding treatment is carried out on indoor pollution sources from the naked plate in consideration of the removal effect of harmful gases in the whole indoor air and the subsequent removal effect of indoor formaldehyde and other harmful gases. If the indoor bare board-mounted furniture, such as bare boards, density boards, pine boards and the like, is provided, before the quick-acting composite formaldehyde purification solution and the nano purification treatment agent are used, the bare board polymer plugging agent needs to be sprayed on the indoor bare board-mounted furniture, so that the bare board polymer plugging agent forms a plugging layer on the surface of the bare board-mounted furniture, the formaldehyde in the bare board-mounted furniture can be plugged strongly, and the formaldehyde release of the bare board-mounted furniture to the indoor is reduced as much as possible. The naked board high molecular plugging agent is a composite high molecular board strengthening degradation agent, high molecular polymer polyvinyl alcohol and soybean protein in main components form the core of a plugging layer on the surface of naked package board type furniture, high molecular polymer polyvinyl alcohol and amino acid in biological soybean protein are adopted to combine a plugging slow-release decomposition technology, the plugging layer can be formed on the surface of the naked package board type furniture, free formaldehyde, benzene and TVOC in the plugging layer are subjected to powerful plugging neutralization, the release of the formaldehyde into a room is inhibited, and meanwhile, the internal degradation of the free formaldehyde, the benzene and the TVOC in the boards such as naked boards, density boards, pine boards and the like can be carried out. The bare board high-molecular plugging agent is suitable for pollution such as formaldehyde, benzene, TVOC and the like volatilized by pollution sources such as various density boards, bare boards, pine boards and the like, and has the functions of strengthening plugging and slow-release degradation.
Further, after the step (2), the indoor air is completely sprayed by using natural plant deodorizing essence, wherein the manufacturer of the natural plant deodorizing essence is Beijing Levojia environmental protection technology Co.
Through adopting above-mentioned technical scheme, harmful gas concentration such as indoor formaldehyde is higher for some, even adopt the aforesaid to handle after the operation, indoor probably still has the peculiar smell, in order to make indoor no peculiar smell or no pungent smell as far as possible, has carried out the aforesaid and has administered technology after, can further get rid of indoor peculiar smell to indoor spraying natural plant odor removal essence, has the effect of alleviating indoor peculiar smell simultaneously. The natural plant odor removal essence has an antibacterial effect, can purify air, reduce pollution, release beneficial factors while degrading, promote quick reduction of air, form a high-quality air environment and achieve the effect of removing peculiar smell, and meanwhile, the natural plant odor removal essence has light plant taste, can make breath smooth and is vigorous in spirit, and achieves a sobering effect. When in use, the spraying agent is uniformly sprayed on the space of a treatment target pollution source and the surface of an object, the use frequency is properly increased according to the pollution degree, and the use amount per square meter is 20ml to 30 ml. The natural plant deodorizing essence is suitable for degrading and neutralizing peculiar smells generated by various vehicles, bedrooms, restaurants, toilets, clothes, shoes and socks, pet peripheries, sewers, cigarette smells, fish smells, leather furniture and the like, can eliminate peculiar smells and various harmful bacteria in the air by utilizing a biological enzymolysis technology, reduces the air quality, has strong antibacterial, mildew-proof and deodorizing effects, and has toxic and side damages to people and pets.
The invention utilizes quick-acting composite formaldehyde clean solution and nano purification treatment agent to treat harmful gases such as formaldehyde in indoor air, wherein the nano purification treatment agent can form a microporous spongy slow-release film on the surface of an indoor pollution source, so that on one hand, the release of formaldehyde from the pollution source to the indoor is slowed down, on the other hand, nano particles are released to the inside and the outside of the pollution source, and the harmful gases such as formaldehyde in the indoor and the pollution source are removed. The quick-acting composite formaldehyde purifying solution can efficiently remove harmful gases such as formaldehyde and the like in indoor air. Meanwhile, the method starts from two aspects of reducing the release of formaldehyde and removing the released formaldehyde fundamentally, and utilizes the quick-acting composite formaldehyde clean solution and the nano purification treatment agent to remove the indoor formaldehyde.
In order to purify indoor formaldehyde more efficiently, aiming at indoor peculiar smell or pungent smell before and after indoor bare board purification, the invention also utilizes the bare board high-molecular plugging agent, the silver ion deodorant and the natural plant odor-removing essence to remove the peculiar smell or the pungent smell in the bare board and the room respectively.
Detailed Description
The invention provides an indoor/in-vehicle formaldehyde-removing air purification treatment construction process, wherein a quick-acting composite formaldehyde clean solution is used, and a manufacturer is Beijing Lei Wai Jia environmental protection technology Co Ltd; the nano purifying treatment agent is manufactured by Beijing Laiwao Jia environmental protection science and technology limited; the silver ion deodorant is produced by Beijing Laowa environmental protection technology Co., Ltd; the polymer sealant for the bare board is manufactured by Beijing Laiwayai environmental protection science and technology Limited; the natural plant deodorizing essence is produced by Beijing Laiwao Jia environmental protection technology Co. In addition, a self-developed quick-acting composite formaldehyde clean solution and a nano purification treatment agent are also used, and the components and the volume percentages of the two solutions are respectively as follows: 10 to 40 percent of hydrolyzed soybean protein, 5 to 25 percent of tea polyphenol, 10 to 25 percent of hydroxymethyl cellulose and 10 to 75 percent of deionized water; nano purifying treatment agent: 20% -50% of nanometer micromolecule titanium phosphate dioxide: 10% -40% of nano silicon dioxide: 10 to 70 percent of deionized water.
The invention provides an indoor/interior formaldehyde-removing air purification treatment construction process, which comprises the following steps:
(1) detecting before air purification, and detecting the indoor formaldehyde concentration of formaldehyde to be purified;
(2) if a bare board exists indoors, the surface spraying treatment is carried out on all indoor bare board-mounted furniture by using a bare board polymer plugging agent for 1-2 times, and the using amount is 20-30ml per square meter; if no bare board exists indoors, directly entering the next step;
(3) if the interior has large peculiar smell or pungent smell, the silver ion deodorant is used for carrying out surface spraying treatment on the furniture with the indoor paint surface, the carpet, the floor glue ground, the wood floor and the indoor veneer for 1-2 times, and the using amount is 20-30ml per square meter; if no peculiar smell or pungent smell exists indoors, directly entering the next step;
(4) the quick-acting composite formaldehyde cleaner is used for carrying out surface spraying treatment on all indoor wall surfaces and ceilings for 1-2 times, the using amount is 15-25ml per square meter, the wall surfaces can be wall surfaces decorated by wallpaper and wall cloth or wall surfaces directly treated by paint, and the ceilings can be ceilings decorated by wallpaper or ceilings directly treated by paint;
(5) spraying indoor air and comprehensively spraying furniture and interior panels with nanometer purification treatment agent for 1-2 times, wherein the usage amount is 15-25ml per square meter;
(6) after 3-5 working days, if peculiar smell still exists in the room, adopting natural plant odor-removing essence to carry out full-surface spraying treatment indoors for 1-2 times, wherein the using amount is 20-30ml per square meter; if no peculiar smell exists indoors, directly entering the next step;
(7) and detecting the concentration of formaldehyde in the room.
In the spraying process, after the surface of the former spraying is dried, the latter spraying is started.
The technical scheme of the invention is further described in detail by combining preparation examples, examples and detection tests.
Preparation example
According to the component proportion of the quick-acting composite formaldehyde purification solution and the nano purification treatment agent, the components are mixed according to the volume in the table 1 to obtain preparation solutions with different proportions.
(1) Preparation example of quick-acting composite Formaldehyde purifying solution
1) Preparation example 1 of quick-acting Complex Formaldehyde detergent solution
The volume percentage of each component is as follows: 10% of hydrolyzed soybean protein, 5% of tea polyphenol, 10% of hydroxymethyl cellulose and 75% of deionized water;
2) preparation example 2 of quick-acting Complex Formaldehyde detergent solution
The volume percentage of each component is as follows: 25% of hydrolyzed soybean protein, 5% of tea polyphenol, 10% of hydroxymethyl cellulose and 60% of deionized water;
3) preparation example 3 of quick-acting Complex Formaldehyde detergent solution
The volume percentage of each component is as follows: 40% of hydrolyzed soybean protein, 5% of tea polyphenol, 10% of hydroxymethyl cellulose and 45% of deionized water;
4) preparation example 4 of quick-acting Complex Formaldehyde detergent solution
The volume percentage of each component is as follows: 25% of hydrolyzed soybean protein, 20% of tea polyphenol, 10% of hydroxymethyl cellulose and 45% of deionized water;
5) preparation example 5 of quick-acting Complex Formaldehyde detergent solution
The volume percentage of each component is as follows: 25% of hydrolyzed soybean protein, 25% of tea polyphenol, 10% of hydroxymethyl cellulose and 40% of deionized water;
6) preparation example 6 of quick-acting Complex Formaldehyde detergent solution
The volume percentage of each component is as follows: 25% of hydrolyzed soybean protein, 20% of tea polyphenol, 15% of hydroxymethyl cellulose and 40% of deionized water;
7) preparation example 7 of quick-acting Complex Formaldehyde detergent solution
The volume percentage of each component is as follows: 25% of hydrolyzed soybean protein, 20% of tea polyphenol, 25% of hydroxymethyl cellulose and 30% of deionized water;
8) preparation example 8 of quick-acting Complex Formaldehyde detergent solution
The volume percentage of each component is as follows: 40% of hydrolyzed soybean protein, 25% of tea polyphenol, 25% of hydroxymethyl cellulose and 10% of deionized water.
Solutions of 100ml volume were prepared according to the above preparation example, and the specific amounts of each component added are shown in Table 1.
TABLE 1 preparation of quick-acting composite formol solution
(2) Preparation example of Nano purification treating agent
1) Preparation example 1 of Nano purification treating agent
The volume percentage of each component is as follows: nanometer micromolecule titanium dioxide phosphate 20%: 10% of nano silicon dioxide: 70% of deionized water;
2) preparation example 2 of Nano purification treating agent
The volume percentage of each component is as follows: nanometer micromolecule titanium dioxide phosphate 35%: 10% of nano silicon dioxide: 55% of deionized water;
3) preparation example 3 of Nano purification treating agent
The volume percentage of each component is as follows: nanometer micromolecule titanium dioxide phosphate 50%: 10% of nano silicon dioxide: 40% of deionized water;
4) preparation example 4 of Nano purification treating agent
The volume percentage of each component is as follows: nanometer micromolecule titanium dioxide phosphate 35%: 25% of nano silicon dioxide: 40% of deionized water;
5) preparation example 5 of Nano purification treating agent
The volume percentage of each component is as follows: nanometer micromolecule titanium dioxide phosphate 35%: 40% of nano silicon dioxide: 25% of deionized water;
6) preparation example 6 of Nano purification treating agent
The volume percentage of each component is as follows: nanometer micromolecule titanium dioxide phosphate 50%: 40% of nano silicon dioxide: 10% of deionized water.
Solutions of 100ml volume were prepared according to the above preparation example, and the specific amounts of each component added are shown in Table 2.
TABLE 2 preparation examples of nano-purification treatment agents
The test for purifying indoor formaldehyde is carried out by respectively using 8 quick-acting composite formaldehyde purification solution preparation examples in table 1 and 6 nano purification treatment agents in table 2, QB/T2761-:
(1) detection method and conditions
1. Test chamber volume: 1.5m3(two: one is a sample compartment and one is a blank compartment).
2. Pollution source release mode: the release is uninterrupted and natural.
3. Sample usage and number of samples used: spraying to 3 pieces of 1m2The sample is hung in a sample cabin after being naturally dried; the sample was used in an amount of 300 ml.
4. Acting time: and (5) 24 h.
(2) Detection result and calculation method
The purification effect calculation formula is as follows:
in the formula: y-removal,%;
CA-a value of contaminant concentration for the blank compartment;
CB-sample compartment contaminant concentration value.
The results are shown in Table 3.
TABLE 3 examination results of samples of preparation examples
As can be seen from the above table, the fast-acting formaldehyde complex solution preparation example 7 and the nano purification agent preparation example 5 have the best formaldehyde purification effect. Formaldehyde purification treatment was performed using the quick-acting composite formaldehyde purification solution preparation example 7 and the nano purification treatment agent preparation example 5 for the blank chambers with original formaldehyde concentrations of 1.3mg/ml, 1.42mg/ml and 1.56mg.ml, respectively, and the results are shown in table 4.
TABLE 4 quick-acting composite Formaldehyde cleaner solution preparation example 7 and nanometer purification agent preparation example 5 test results
As can be seen from the above table, the fast-acting composite formaldehyde purification solution preparation example 7 and the nano purification treatment agent preparation example 5 have general applicability to the effect of formaldehyde.
Examples
Example 1
In this example, quick-acting composite formaldehyde cleaner preparation example 7, nano-purification treatment agent preparation example 5, and bare-board polymer blocking agent, silver ion deodorant and natural plant deodorant essence purchased from Beijing Lei Wao environmental protection technology Co., Ltd., were used, and the original formaldehyde concentration was 1.17mg/ml, and the volume was 1.5m3The blank cabin is subjected to formaldehyde purification treatment, and the specific steps are as follows:
(1) detecting before air purification, and detecting the indoor formaldehyde concentration of formaldehyde to be purified;
(2) carrying out surface spraying treatment on indoor bare board-mounted furniture by using a bare board polymer plugging agent, wherein the spraying treatment is carried out for 2 times, and the using amount is 20ml per square meter;
(3) carrying out surface spraying treatment on the floor glue ground and the indoor veneer by using a silver ion deodorant, wherein the spraying amount is 20ml per square meter for 2 times;
(4) carrying out surface spraying treatment on all indoor wall surfaces and ceilings by using quick-acting composite formaldehyde cleaner for 2 times, wherein the using amount is 15ml per square meter, the wall surfaces are directly treated by paint, and the ceilings are directly treated by the paint;
(5) spraying indoor air and comprehensively spraying furniture and interior panels with nano-purification treatment agent for 2 times, wherein the usage amount is 15ml per square meter;
(6) after 3 working days, adopting natural plant odor removal essence to carry out overall spraying treatment indoors for 1 time, wherein the usage amount is 20ml per square meter;
(7) and detecting the concentration of formaldehyde in the room.
Example 2
The difference between the embodiment and the embodiment 1 is that when the quick-acting composite formaldehyde cleaner is used for carrying out surface spraying treatment on all indoor wall surfaces and ceilings, the usage amount is 20ml per square meter, and the other steps are the same.
Example 3
The difference between the embodiment and the embodiment 1 is that when the quick-acting composite formaldehyde cleaner is used for carrying out surface spraying treatment on all indoor wall surfaces and ceilings, the usage amount is 25ml per square meter, and the other steps are the same.
Example 4
The difference between the embodiment and the embodiment 2 is that when the nano purifying treatment agent is used for carrying out overall spraying treatment indoors, the using amount is 20ml per square meter; the rest steps are the same.
Example 5
The difference between the embodiment and the embodiment 2 is that when the nano purifying treatment agent is used for carrying out overall spraying treatment indoors, the using amount is 25ml per square meter; the rest steps are the same.
Example 6
The difference between the present example and example 5 is that the silver ion deodorant is used in an amount of 30ml per square meter when the surface of the floor or interior panel is sprayed with the silver ion deodorant, and the rest steps are the same.
Example 7
The difference between the embodiment and the embodiment 6 is that the amount of the bare board polymer plugging agent used for surface spraying treatment of indoor bare board type furniture is 30ml per square meter, and the rest steps are the same.
Example 8
The difference between the embodiment and the embodiment 7 is that the usage amount is 30ml per square meter when the natural plant odor removal essence is adopted to carry out comprehensive indoor spraying treatment; the rest steps are the same.
Example 9
The difference between this example and example 1 is that the quick-acting composite formaldehyde purification solution, the nano purification treatment agent, the bare board polymer blocking agent, the silver ion deodorant, and the natural plant deodorant essence, which are purchased from beijing lai wojia environmental protection technology ltd, are used in this example, and the rest are the same.
Example 10
The difference between the embodiment and the embodiment 9 is that when the quick-acting composite formaldehyde cleaner is used for carrying out surface spraying treatment on all indoor wall surfaces and ceilings, the usage amount is 20ml per square meter, and the other steps are the same.
Example 11
The difference between the embodiment and the embodiment 9 is that when the quick-acting composite formaldehyde cleaner is used for carrying out surface spraying treatment on all indoor wall surfaces and ceilings, the usage amount is 25ml per square meter, and the other steps are the same.
Example 12
The difference between the embodiment and the embodiment 10 is that when the nano purifying treatment agent is used for carrying out overall spray treatment indoors, the usage amount is 20ml per square meter; the rest steps are the same.
Example 13
The difference between the embodiment and the embodiment 10 is that when the nano purifying treatment agent is used for carrying out overall spraying treatment indoors, the using amount is 25ml per square meter; the rest steps are the same.
Example 14
The difference between the present example and example 13 is that the amount of the silver ion deodorant used for surface spraying of floor and interior veneer is 30ml per square meter, and the rest steps are the same.
Example 15
The difference between the present example and example 14 is that the amount of the bare board polymer plugging agent used for surface spraying treatment of the indoor bare board furniture is 30ml per square meter, and the rest steps are the same.
Example 16
The difference between the embodiment and the embodiment 15 is that when the natural plant odor removal essence is adopted to carry out comprehensive indoor spraying treatment, the usage amount is 30ml per square meter; the rest steps are the same.
The formaldehyde-purifying effects of examples 1 to 16 are shown in Table 5, respectively.
TABLE 5 examples 1-16 Formaldehyde purification test results
According to the results, the purification detection results of the embodiments show that the formaldehyde-removing air purification treatment construction process provided by the invention has a good effect of removing indoor formaldehyde.
Application example
The formaldehyde-removing air purification treatment construction process provided by the invention is used for removing indoor formaldehyde of the Xiou team of the fifth middle school of Yanqing in Beijing city, and the quick-acting composite formaldehyde cleaning preparation example 7, the nanometer purification treatment agent preparation example 5, and a bare board polymer blocking agent, a silver ion deodorant and natural plant odor-removing essence purchased from Beijing Levojia environmental protection technology Limited company are applied, and the process specifically comprises the following steps:
(1) detecting before air purification, namely detecting the indoor formaldehyde, benzene, toluene, xylene and TVOC concentrations of formaldehyde to be purified, wherein the detection results are shown in Table 6;
TABLE 6 indoor air test results of the Mi Xian in the fifth school of Yanqing, Beijing
According to the table above and the standard values of the corresponding items in table 7, it can be seen that all the items in the room before treatment do not meet the standard requirements.
(2) Carrying out surface spraying treatment on indoor bare board-mounted furniture by using a bare board polymer plugging agent, wherein the spraying treatment is carried out for 2 times, and the using amount is 30ml per square meter;
(3) carrying out surface spraying treatment on the floor surface and the indoor veneer by using a silver ion deodorant, wherein the spraying amount is 30ml per square meter for 2 times;
(4) spraying the surfaces of all indoor walls and ceilings for 2 times by using quick-acting composite formaldehyde cleaner, wherein the usage amount is 20ml per square meter;
(5) carrying out comprehensive indoor spraying treatment by using a nano purifying treatment agent, wherein the spraying treatment is carried out for 2 times, and the using amount is 25ml per square meter;
(6) after 5 working days, adopting natural plant odor removal essence to carry out overall spraying treatment indoors for 2 times, wherein the usage amount is 30ml per square meter;
(7) indoor formaldehyde, benzene, toluene, xylene and TVOC concentrations are detected.
Detection test
The national technical supervision agency specifies the content standard of formaldehyde in the air of a room as follows: the maximum allowable formaldehyde concentration in a family room is 0.10mg/ml, and the living environment of children, pregnant women and old people is 0.08 mg/ml. When the concentration of formaldehyde in the indoor air is 0.10mg/ml-0.20mg/ml, the formaldehyde is slightly overproof, slight discomfort can be caused, and symptoms such as skin allergy, abnormal sense, immunity reduction, chronic diseases and the like can be caused under the environment for a long time; when the concentration of formaldehyde in indoor air is 0.20-0.40 mg/ml, the formaldehyde is moderate and exceeds the standard, obvious discomfort can be caused, and symptoms such as pharyngolaryngitis, conjunctivitis, asthma, headache, nausea, alopecia, insomnia, amnesia and the like can be caused under the environment for a long time; when the concentration of formaldehyde in the indoor air is 0.40-0.60 mg/ml, the formaldehyde is serious and exceeds the standard, strong discomfort can be caused, tearing, throat discomfort or pain can be caused by direct stimulation, and canceration can be caused under the environment for a long time; when the concentration of formaldehyde in the indoor air is more than 0.60mg/ml, the overweight degree exceeds the standard, a series of body discomfort of a body can be directly caused under the environment, and the immunity of the body is reduced for a long time to cause a series of comprehensive diseases.
The method is characterized in that five items of formaldehyde, benzene, toluene, xylene and TVOC are detected in a Xianxiao room in a corresponding example, QB/T18883-2002 indoor air quality standard is taken as a standard basis, and sampling conditions are as follows: temperature 26.0 ℃, humidity 50.0% RH, atmospheric pressure: 101.1 kpa. The detection instrument is a ZK-3H atmospheric sampler, a 722 spectrophotometer, a TES-1360 hygrothermograph, a GC-8600 gas chromatograph and a DYM3 empty box pressure gauge. The results are shown in Table 7.
TABLE 7 indoor air test results of the fifth middle school of Yanqing, Beijing
As can be seen from the above table, the construction process for purifying air by removing formaldehyde indoors provided by the invention purifies the air of the Xian Guaiji room, the detection results of five items of formaldehyde, benzene, toluene, xylene and TVOC in the Xian Guaiji room all meet the corresponding standard requirements,
in addition, the air purification treatment construction process provided by the invention is used for purifying air in a vehicle, and parameters before and after treatment are shown in table 8.
TABLE 8 results of air detection before and after vehicle interior air purification treatment
According to the table, the air purification treatment construction process provided by the invention has a good treatment effect on the air purification treatment in the vehicle, and the treated air in the vehicle meets the standard requirement of indoor air quality.
In conclusion, the indoor/vehicle formaldehyde-removing air purification treatment construction process provided by the invention has a good treatment effect on indoor and vehicle formaldehyde and other harmful gases in the air.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. An indoor/interior formaldehyde-removing air purification treatment construction process is characterized by comprising the following steps:
(1) carrying out surface spraying treatment on all indoor walls and ceilings by using a quick-acting composite formaldehyde clean solution, wherein the usage amount per square meter is 15-25 ml;
(2) the nano purifying treatment agent is used for spraying indoor air and carrying out comprehensive spraying treatment on furniture and interior trimming panels, and the usage amount per square meter is 15ml-25 ml.
2. The indoor/indoor formaldehyde-removing air purification treatment construction process according to claim 1, characterized in that: the manufacturer of the quick-acting composite formaldehyde purification solution in the step (1) is Beijing Laiwaya environmental protection technology Co.
3. The indoor/indoor formaldehyde-removing air purification treatment construction process according to claim 1, characterized in that: the quick-acting composite formaldehyde purification solution in the step (1) comprises the following components in percentage by volume: 10 to 40 percent of hydrolyzed soybean protein, 5 to 25 percent of tea polyphenol, 10 to 25 percent of hydroxymethyl cellulose and 10 to 75 percent of deionized water.
4. The indoor/indoor formaldehyde-removing air purification treatment construction process according to claim 1, characterized in that: the manufacturer of the nano purification treatment agent in the step (2) is Beijing Laiwayo Jia environmental protection technology Co.
5. The indoor/indoor formaldehyde-removing air purification treatment construction process according to claim 1, characterized in that: the nano purifying treatment agent in the step (2) comprises the following components in percentage by volume: 20% -50% of nanometer micromolecule titanium dioxide phosphate: 10% -40% of nano silicon dioxide: 10 to 70 percent of deionized water.
6. The indoor/indoor formaldehyde-removing air purification treatment construction process according to claim 1, characterized in that: spraying indoor air and spraying the surfaces of furniture, floors or interior trim panels with a silver ion deodorant before the step (1), wherein the manufacturer of the silver ion deodorant is Beijing Leipo gamma environmental protection science and technology Limited.
7. The indoor/indoor formaldehyde-removing air purification treatment construction process according to claim 1, characterized in that: and (2) before the step (1), surface spraying treatment is carried out on all the naked plate-mounted furniture by using a naked plate polymer plugging agent, wherein the manufacturer of the naked plate polymer plugging agent is Beijing Laiwaya environmental protection technology Co.
8. The indoor/indoor formaldehyde-removing air purification treatment construction process according to claim 1, characterized in that: and (3) comprehensively spraying indoor air by using natural plant deodorizing essence after the step (2), wherein the manufacturer of the natural plant deodorizing essence is Beijing Lei Wai Jia environmental protection technology Co.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911422739.0A CN111036066A (en) | 2019-12-30 | 2019-12-30 | Indoor/in-vehicle formaldehyde-removing air purification treatment construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911422739.0A CN111036066A (en) | 2019-12-30 | 2019-12-30 | Indoor/in-vehicle formaldehyde-removing air purification treatment construction process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111036066A true CN111036066A (en) | 2020-04-21 |
Family
ID=70243268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911422739.0A Pending CN111036066A (en) | 2019-12-30 | 2019-12-30 | Indoor/in-vehicle formaldehyde-removing air purification treatment construction process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111036066A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112295155A (en) * | 2020-10-12 | 2021-02-02 | 江苏瑞丰科技实业有限公司 | Method for removing formaldehyde in indoor (vehicle) environment |
| CN114797455A (en) * | 2022-04-28 | 2022-07-29 | 云南菩丕实业有限公司 | Automobile foot pad with harmful gas purification function |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002211928A (en) * | 2000-12-30 | 2002-07-31 | Altra:Kk | Visible light-reactive titanium dioxide, method for producing the same and method for removing contaminant |
| CN102719217A (en) * | 2012-06-20 | 2012-10-10 | 马晓平 | Protein-based wood adhesive and preparation method thereof |
| CN103657371A (en) * | 2012-09-23 | 2014-03-26 | 天津日中环保节能技术服务有限公司 | Efficient indoor air pollution purifying agent |
| CN104592878A (en) * | 2015-01-01 | 2015-05-06 | 宁波帝杨电子科技有限公司 | Environment-friendly water-based paint and preparation method thereof |
| CN104645819A (en) * | 2013-11-21 | 2015-05-27 | 马啸天 | Production process of soybean protein formaldehyde removing agent |
| CN106362183A (en) * | 2016-10-14 | 2017-02-01 | 孙永跃 | Deodorant, preparation method and application thereof |
| CN106675511A (en) * | 2016-12-17 | 2017-05-17 | 浦北县建业胶合板有限责任公司 | Novel wood adhesive and preparation method thereof |
| CN108636101A (en) * | 2018-04-27 | 2018-10-12 | 广东自由能科技股份有限公司 | A kind of sterilizing deodoring agent and preparation method thereof and the application in aerosol |
| CN109260946A (en) * | 2018-11-19 | 2019-01-25 | 芜湖格丰环保科技研究院有限公司 | A kind of safety-type indoor formaldehyde agent for capturing and its preparation and application |
| CN109351142A (en) * | 2018-10-09 | 2019-02-19 | 秦皇岛美博士新型材料科技有限公司 | A kind of sterilizing deodoring agent and preparation method thereof |
| CN109771882A (en) * | 2019-02-19 | 2019-05-21 | 生态美家(北京)环境科技有限公司 | Treating air indoor method |
-
2019
- 2019-12-30 CN CN201911422739.0A patent/CN111036066A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002211928A (en) * | 2000-12-30 | 2002-07-31 | Altra:Kk | Visible light-reactive titanium dioxide, method for producing the same and method for removing contaminant |
| CN102719217A (en) * | 2012-06-20 | 2012-10-10 | 马晓平 | Protein-based wood adhesive and preparation method thereof |
| CN103657371A (en) * | 2012-09-23 | 2014-03-26 | 天津日中环保节能技术服务有限公司 | Efficient indoor air pollution purifying agent |
| CN104645819A (en) * | 2013-11-21 | 2015-05-27 | 马啸天 | Production process of soybean protein formaldehyde removing agent |
| CN104592878A (en) * | 2015-01-01 | 2015-05-06 | 宁波帝杨电子科技有限公司 | Environment-friendly water-based paint and preparation method thereof |
| CN106362183A (en) * | 2016-10-14 | 2017-02-01 | 孙永跃 | Deodorant, preparation method and application thereof |
| CN106675511A (en) * | 2016-12-17 | 2017-05-17 | 浦北县建业胶合板有限责任公司 | Novel wood adhesive and preparation method thereof |
| CN108636101A (en) * | 2018-04-27 | 2018-10-12 | 广东自由能科技股份有限公司 | A kind of sterilizing deodoring agent and preparation method thereof and the application in aerosol |
| CN109351142A (en) * | 2018-10-09 | 2019-02-19 | 秦皇岛美博士新型材料科技有限公司 | A kind of sterilizing deodoring agent and preparation method thereof |
| CN109260946A (en) * | 2018-11-19 | 2019-01-25 | 芜湖格丰环保科技研究院有限公司 | A kind of safety-type indoor formaldehyde agent for capturing and its preparation and application |
| CN109771882A (en) * | 2019-02-19 | 2019-05-21 | 生态美家(北京)环境科技有限公司 | Treating air indoor method |
Non-Patent Citations (2)
| Title |
|---|
| 许斌成: "《做最好的建筑工程施工员》", 30 November 2014, 中国建材工业出版社 * |
| 陈金花等: "室内空气污染治理的研究进展", 《重庆建筑大学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112295155A (en) * | 2020-10-12 | 2021-02-02 | 江苏瑞丰科技实业有限公司 | Method for removing formaldehyde in indoor (vehicle) environment |
| CN114797455A (en) * | 2022-04-28 | 2022-07-29 | 云南菩丕实业有限公司 | Automobile foot pad with harmful gas purification function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107486005A (en) | A kind of indoor formaldehyde odor scavenging agent | |
| CN111036066A (en) | Indoor/in-vehicle formaldehyde-removing air purification treatment construction process | |
| CN104645819A (en) | Production process of soybean protein formaldehyde removing agent | |
| CN107737578B (en) | Preparation method of anion antibacterial adsorption material composition | |
| CN102974212A (en) | Biological enzyme cleaning agent and preparation method thereof | |
| US20200206718A1 (en) | Odor absorbing paint and preparation method and use thereof | |
| KR100977862B1 (en) | A manufacturing method of adsorptive composition having antimicrobial and deodorant function | |
| CN109260934A (en) | A kind of negative oxygen ion biology removes aldehyde taste removal integration paint formulation | |
| KR100808094B1 (en) | Deodorization and antigerm composition for eliminating formaldehyde and volatile-organic compounds causing sick housesyndrome | |
| CN107497093A (en) | Indoor decorating air pollution comprehensive regulation engineering method | |
| CN110860179A (en) | Formaldehyde scavenging agent and preparation method thereof | |
| KR100803110B1 (en) | Composition for eliminating detrimental gas and absorbing volatile organic compounds | |
| KR100977863B1 (en) | Adsorptive composition having antimicrobial and deodorant function | |
| CN103341250A (en) | Method for treating indoor decoration formaldehyde pollution | |
| CN108342118A (en) | Except the interior wall activated carbon powder of lacquer putty for use on of formaldehyde and putty paste and preparation method thereof | |
| CN107398152A (en) | Formaldehyde scavenger and preparation method thereof | |
| CN112915762A (en) | Method for purifying indoor air after decoration | |
| KR101099320B1 (en) | Wallpaper containing absorbing counteractive for removing volatile organic compounds and formaldehyde | |
| CN201941190U (en) | Board for negative oxide ion furniture | |
| CN107793075A (en) | A kind of wall mud and its construction method for decomposing indoor harmful gas | |
| CN112295155A (en) | Method for removing formaldehyde in indoor (vehicle) environment | |
| JP5147262B2 (en) | Indoor deodorization method | |
| CN206793599U (en) | A kind of abatement equipment of indoor decoration pollution gas | |
| CN110975551A (en) | Non-toxic decoration technology capable of ensuring that people can live after decoration | |
| CN109351174A (en) | A kind of air purification method modified based on graphene |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200421 |