48results about How to "Play a role in decomposition" patented technology

The invention relates to a compound catalytic material for purifying harmful gas. Deionized water is used as dispersant to compound nano-catalytic material, rare earth compound, p-type semiconductor, antimicrobial, plant extract and anion powder. The compound catalytic material can fast and thoroughly eliminate free formaldehyde, benzene homologue, ammonia and TVOC harmful gas. The compound catalytic material does not require ultraviolet light, has simple use and low cost and does not have toxic side effect and secondary pollution, and the purification effect can last for more than five years without rebound. At the same time, the compound catalytic material prevents bacteria, germina and mildew from invading human body, removes peculiar smell, odor, smoke, leather flavour, paint flavour and the like, increases anion and far infrared ray which are beneficial to human body and improves indoor air environmental quality comprehensively. The experiment detection shows that formaldehyde clearance rate within 24 hours is 91.6 percent; benzene clearance rate is 88.9 percent; ammonia clearance rate is 90.5 percent; TVOC clearance rate is 87.6 percent; sterilization and bacteriostasis rate is 99.99 percent; mould prevention is 0 grade; and acute oral toxicity is tested as actually nontoxic class.

The invention relates to a sweeper with an air purification function. The sweeper comprises a shell, a dust collection device, a mopping device, an air purification device and a traveling device, an air inlet and an air outlet are formed in the shell, a filtering screen is arranged in the shell, the air purification device is arranged in the filtering screen and comprises an air pump, a water tankand an ultraviolet lamp, water solution and photocatalyst active balls are arranged in the water tank, the dust collection device comprises a dust collector and a dust storage chamber, the mopping device comprises a mopping plate, a water discharging pipe and a water discharging control switch, and the mopping plate is connected with the traveling device through a telescopic connecting shaft. According to the sweeper, indoor air purification and floor sweeping functions can be simultaneously achieved, so that the sweeper is richer in function, soluble organic pollutants in air are dissolved and adsorbed by the water solution, photocatalytic degradation is performed on dissolved matters by the photocatalyst active balls in the water solution, so that the air purification function of the sweeper is achieved, and an air purifier is high in efficiency.

The invention discloses a medical multi-enzyme cleaning agent and a preparation method thereof. The medical multi-enzyme cleaning agent is composed of the following compositions in parts by weight: 1-20 parts of dodecanol polyethenoxy ether, 1-20 parts of octanol polyethenoxy ether, 5 parts of propylene glycol, 1 part of polyethylene glycol, 1 part of ethanol, 0.1 part of turquoise blue, 0.1 part of kathan, 2 parts of a liquid lipase, 1 part of a liquid amylase, 1 part of a liquid cellulase, 1 part of a liquid pectase, 5 part of a liquid protease, and the balance deionized water. The polyethylene glycol and propylene glycol in the medical multi-enzyme cleaning agent can extremely well preventing protease from decomposing other biological enzymes, and the medical multi-enzyme cleaning agent is good in stability, good in cleaning effect, and extremely convenient for usage and storage.

A method for killing the harmful living things in soil by use of ozone includes such steps as deep ploughing for breaking off the soil while spraying water until the content of water in soil is 55-75%, making ridges, covering a plastic film on the ridges, sealing the edges of said plastic film, filling ozone into the space under plastic film at the speed of 10g / hr for 90-150 hr, and removing the plastic film.

The invention relates to a double-cavity air purifier. The double-cavity air purifier comprises a shell, an air purification device and an air humidification device; the shell comprises a first innercavity, a second inner cavity, an air inlet and an air outlet; the first inner cavity is internally provided with a first filter net, and the air purification device is arranged in the first filter net; the air purification device comprises an air pump, a first water trough and an ultraviolet lamp, the first water trough is internally provided with a water solution and photocatalyst active balls,and the top of the first water trough is connected and communicates with the air outlet through an exhaust funnel; and the air humidification device is arranged in the second inner cavity and comprises a second water trough, a heater, a first water pump, a second water pump, a water distributor and an evaporator. According to the double-cavity air purifier, soluble organic pollutants in air are dissolved and adsorbed through the water solution, then, photocatalytic degradation is conducted on dissolved matter through the photocatalyst active balls in the water solution so that the efficiency of the air purifier can be improved, and the humidification function of the air purifier is additionally achieved through the double-cavity design.

The invention discloses an automobile exhaust purifying agent and a preparation method thereof. The method comprises the following steps: mixing 1-1.75% isopropanol with 1-5% propylene glycol so as to obtain a mixture I; mixing the mixture I with 1-2% hydrogen peroxide, 2-3% ethanol and methanol; finally performing split charging and packing, checking out and warehousing. By adopting the automobile exhaust purifying agent, the exhaust problem is solved basically, part of a chemical preparation plays a decomposition role, and the rest chemical preparation decomposes and utilizes organic matters capable of causing carbon deposition by using a chemical mode. The problem of exhaust purification is solved by fully using the chemical mode, and the two modes are mutually coordinated, so that the automobile exhaust purifying agent is rapid and lasting in effect, and has a broad market prospect for severe exhaust emission in China.

The invention relates to an air purifier with a floor sweeping function. The air purifier comprises a shell, a dust sucking device, a floor mopping device, an atomization device for disinfecting air,an air purifying device and an air humidifier arranged in the shell, and a walking device arranged below the shell; the dust sucking device comprises a dust sucker and an ash storage chamber; the atomization device comprises a liquid bin and a sprayer; the air purifying device comprises an air pump, a first water tank and a ultraviolet lamp; water solution and photocatalyst active balls are arranged in the first water tank; and the air humidifier comprises a second water tank, a first water pump, a second water pump, a heater, a water distributor and an evaporator. The air purifier can synchronously realize indoor air purification, humidification, disinfection and ground cleaning; an air purifying function of the purifier is realized through dissolving absorption of soluble organic pollutants in air by the water solution and photocatalyst degradation of dissolved matters by using the photocatalyst active balls in the water solution; and the efficiency of the air purifier is high.

The invention relates to a method for separating and recovering iron, rare earth and fluorine from rare-earth-contained tailings after beneficiating iron. The method comprises the steps that the rare-earth-contained tailings after beneficiating iron, an additive and pulverized coal are subjected to roasting, ball-milling and magnetically separating after being mixed, briquetted or pelletized to obtain magnetic iron ore concentrate and magnetic tailings; hydrochloric acid is added into the magnetic tailings for leaching, and rare earth chloride leaching liquid and leaching residues rich in calcium fluoride are obtained after filtering; and water is added into the leaching residues to be stirred to form ore pulp, water glass, sodium oleate and terpenic oil are added to obtain rougher concentrate and rougher tailings, and after concentration, calcium fluoride concentrate and total tailings containing a mixture of silicate and a small amount of calcium fluoride are obtained. The method disclosed by the invention has the characteristics of good separation effect, high recovery rate of iron and rare earth, low production cost, large treatment capacity, environmental friendliness and the like, and is a process method relating to the fields of non-blast furnace ironmaking, hydrometallurgy, mineral processing technologies and comprehensive utilization of resources.

The invention discloses a high-efficiency seepage-proofing method for a landfill site for domestic garbage treatment and belongs to the technical field of seepage-proofing treatment. That a sedimentation dual-state water reducing layer is innovatively introduced by taking a layered seepage-proofing mode as a seepage-proofing foundation can be realized, landfill leachate generated during the landfill of domestic garbage and the heat generated in the microbial treatment process are dually settled and drained to the sedimentation dual-state water reducing layer by utilizing the characteristic ofmicrobial treatment of the landfill leachate, pollutant components in the landfill leachate are first decomposed by combining shunting adsorption filtration with the microbial treatment, secondly, theabsorbed heat is stored to heat the landfill leachate to evaporate, and the landfill leachate is discharged to the outside of the landfill site along a pre-buried pipeline to collect and recycle water resources and heat energy, and the landfill leachate is efficiently treated in a mode of actively draining and promoting the dual-state change, so that the seepage-proofing effect of the landfill site is obviously improved.

The invention relates to a medicinal-residue fermentation bacterial group and a medicinal-residue fermentation technology. The medicinal-residue fermentation bacterial group is prepared from the following bacterial strains in parts by weight: 25-35 parts of bacillus subtilis, 20-25 parts of clostridium acetobutylicum, 15-20 parts of lactobacillus, 10-15 parts of nematspora gossypii, 5-10 parts of micromonospora echinospora, 3-8 parts of white rot fungus and 1-2 parts of pichia pastoris. A solid fermentation manner is employed for preparing protein feed from traditional Chinese medicine residue, so that environment pollution caused by traditional Chinese residue is avoided, and traditional Chinese residue becomes a new resource of protein feed, and wastes are changed into valuables. Also, through multiple-test research on the technology, the fermentation technology has the advantages of simple and practicable preparation technology, obvious effect and high practicability.

The invention discloses a complex microbial agent, and application of the complex microbial agent to kitchen waste fermentation for preparation of organic liquid fertilizer. The complex microbial agent is prepared from the following bacterium suspensions in parts by volume: 20-30 parts of yarrowia lipolytica bacteria, 10-20 parts of clavispora lusitaniae bacteria, 15-25 parts of candida utilis bacteria, and 35-55 parts of lactobacillus plantarum bacteria. After kitchen waste is subjected to strain combination and fermentation treatment, the content of amino acid nitrogen is increased to be 4.89% from 1.86% and increased remarkably compared with the content before fermentation, the complex microbial agent is rich in various beneficial microorganisms such as microzyme and lactic acid bacteria and nutrients secreted by the beneficial microorganisms, by serving as the liquid fertilizer, absorption of plants is promoted, and the nutrient level is improved.

The invention relates to a method for making sludge into nutrient soil through anaerobic fermentation. Through a reasonable compounding ratio and reasonable arrangement of substrates in a fermentation tank, step-by-step purification layers of an odor substrate adsorption layer, a microbial decomposition layer and a plant absorption layer are formed, so that less odor is given off into air, or the odor is prevented from being given off into the air; in addition, a methane collecting system is paved at the upper part of the anaerobic fermentation tank, so that recycling of sludge energy resources can also be realized. Through 12-month long-time anaerobic fermentation, organic matters which are easy to decompose in sludge can be converted into stable humus type substances, and the content of humus is increased by about 25%. The high-temperature stage duration in the anaerobic fermentation process is long, so that original pathogenic bacteria in the sludge can be killed. The sludge is mixed with alkali soil, so that curing and passivating effects on original heavy metal can be achieved, the validity of the heavy metal is reduced by about 50%, besides, the decomposition effect on antibiotics and durable organic compounds contained in the sludge can be achieved, and the harmfulness of the sludge is reduced.

The invention relates to the technical field of coatings, and particularly discloses a sand-in-water coating and a preparation method thereof. The sand-in-water coating comprises, by weight, 20-30 parts of a protective glue, 50-60 parts of a toning base paint and 15-25 parts of a continuous phase. The sand-in-water coating has the advantages of strong adhesive force, high toughness, good wear resistance and good weather resistance, and a film formed by the coating can achieve the natural effect and beauty of marble textures.

The present invention relates to a microorganism water quality modifier, particularly to a microorganism type grass control composition used in aquaculture, wherein the microorganism type grass control composition comprises main raw materials, fillers and auxiliary materials, wherein the main raw materials comprise Bacillus subtilis, Baclicus lincheniformis, Lactobacillus plantarum, Lactobacillus acidophilus and other beneficial bacteria, the fillers comprise zeolite powder, sodium chloride, magnesium sulfate, calcium sulfate, calcium hydrogen phosphate, and sodium sulfate, and the auxiliary materials comprise pregelatinized starch, micro-powder silica gel, dextrin, a starch-lactose complex, glucose, magnesium stearate, and microcrystalline cellulose. According to the present invention, the Bacillus subtilis, the Baclicus lincheniformis, the Lactobacillus plantarum, the Lactobacillus acidophilus and other beneficial bacteria are directly pressed into the tablets with the diameter of 4-12 mm by using the tableting machine under the dry powder state, and during the use, the tablets can be directly sprinkled through manual or machinery manner so as to substantially reduce the labor intensity, and the tablets sink into the pool bottom portion heavy pollution zone so as to directly provide the effect and effectively improve the use effect.

The invention discloses a culture wastewater purification treatment system and process. The treatment system comprises an ecological treatment pond, a protein separator and a microbial nitrogen and phosphorus removal filter which are sequentially connected in the flow direction of wastewater. In the treatment process, after the culture wastewater in a culture pond is sequentially treated by the ecological treatment pond and the protein separator, circulating wastewater is introduced into a treatment container with anaerobic and anoxic microorganisms and aerobic microorganisms, and phosphorus in the circulating wastewater is subjected to denitrification reaction through the anaerobic and anoxic microorganisms; aerobic microorganisms are used for carrying out nitration reaction on ammonia nitrogen and nitrite in the circulating wastewater. According to the culture wastewater purification treatment system and process provided by the invention, ammonia nitrogen, nitrite, phosphorus and other substances in the wastewater are completely treated, and the treated water can be reused as culture water, so that water resources are saved.

The invention discloses a compound enzyme preparation for cleaning medical instrument. The compound enzyme preparation is composed of the following compositions in parts by weight: 1-5 parts of polyethylene glycol, 1-20 parts of a liquid lipase, 1-10 parts of a liquid amylase, 1-10 parts of a liquid cellulose, 1-10 parts of a liquid pectase, 1-10 parts of a liquid protease and the balance deionized water. The compound enzyme preparation for cleaning medical instrument is capable of preventing protease from decompose other biological enzymes, and also is capable of keeping the enzyme activity of protease and other biological enzymes. The compound enzyme preparation can be directly added into a conventional chemical cleaning agent in advance for forming a multienzyme cleaning agent, and also can be used directly after be prepared with a chemical cleaning agent, and the compound enzyme preparation has good cleaning effect when used to clean medical instruments.

The invention belongs to the technical field of traditional Chinese medicinal material extraction, and particularly relates to an extraction process for Bletilla striata polysaccharide gum. The extraction process comprises the following concrete steps: (1) weighing Bletilla striata, carrying out crushing and sieving, and adding water to prepare Bletilla striata slurry; (2) fermenting the Bletillastriata slurry with a complex microbial inoculant, and carrying out primary heating reflux extraction to obtain an extract; (3) filtering the extract, taking filter residues, adding water accounting for 4-5 times the weight of the filter residues into the filter residues, performing secondary heating reflux extraction, and carrying out filtering while the filter residues are still hot so as to obtain a first filtrate and second filter residues; (4) adding water accounting for 2.5-3.5 times the weight of the second filter residues into the second filter residues, performing ultrasonic heating reflux extraction, and carrying out filtering while the second filter residues are still hot to obtain a second filtrate; (5) combining the first filtrate and the second filtrate, carrying out concentrating, adding ethanol, performing standing, and then collecting a precipitate; and (6) washing the precipitate with absolute ethyl alcohol several times, and then drying the precipitate to obtain theBletilla striata polysaccharide gum. Compared with a traditional Bletilla striata extraction method, the method of the invention has the effect of increasing the extraction rate of polysaccharides.

The invention discloses an outdoor high-protection-level distribution box. The distribution box comprises a distribution box body, a heat radiation chamber is mounted in the bottom end of the distribution box body, supporting legs are mounted in left and right sides of the bottom end of the heat radiation chamber, a slide bar is mounted between internal centers of slide bar blocks, a second baffleplate penetrates a first baffle plate via a first pole, a rubber block is mounted in the internal end portion of the first pole, and the internal side of a first spring is connected to the distribution box body via a side block. A buffering device cooperates with the first baffle plate, so that the first spring is fixed to the outer side of the distribution box body via the side block, a connection block is popped outwardly via characteristics of the first spring, a force conducted from the first baffle plate can be buffered, the buffering device realizes a high protection effect, the distribution box is collided less outdoor, and damage of the distribution box outdoor is reduced.

The invention discloses intestine-clearing detox fish feed with palm meal and a production method thereof. The feed comprises the following components according to parts by weight: 170-190 parts of palm meal, 56-64 parts of eggplant residue, 35-37 parts of cassava residue, 17-19 parts of locust powder, 3-4 parts of edible salt, 4-5 parts of Ya pear vinegar, 24-26 parts of cypress leaf, 32-35 parts of lavender, 7-9 parts of high-gluten flour, 12-14 parts of yam flour, 1-2 parts of leaf of bunge pricklyash, 24-27 parts of pumpkin seed meal, 14-16 parts of asparagus residue, 21-24 parts of banana residue, 2-3 parts of broad bean sauce, 0.1-0.2 part of EM zymogeneous bacteria, 2-3 parts of ginger powder, 1-2 parts of Herba Lobeliae Chinensis, 1-2 parts of Rhizoma Dryopteris Gassirhizomae, 2-3 parts of Radix Sanguisorbae, 1-2 parts of red bean sauce, and 4-6 parts of malt syrup. The feed of the invention is nutrient and delicious and high in disease resistance, and can enhance immunity of fish, clear intestinal toxins in fish, accelerate the discharge of waste, toxins and heavy metal ions, and ensure healthy development of fish and fresh and nutrient flesh of fish.

The invention discloses anti-mosquito liquid capable of eliminating formaldehyde. The anti-mosquito liquid is mainly prepared from the following components in parts by mass: 5-12 parts of bamboo vinegar, 8-12 parts of traditional Chinese medicine agent, 3-5 parts of mint oil, 2-4 parts of tea polyphenol, 1-3 parts of honeysuckle flower oil, 2-8 parts of geranium oil, 3-5 parts of DEET (diethyltoluamide), 0.5-1 part of anti-foaming agent, 2-7 parts of emulsifier and 15-20 parts of ethanol, wherein the bamboo vinegar contains 200 kinds of organic compounds or more and can absorb and decompose such harmful chemicals as sulfides, cyanides, methanol, benzene, formaldehyde and phenol, and is pure natural and nontoxic. The anti-mosquito liquid disclosed by the invention degrades the formaldehydeby using the bamboo vinegar and has relatively high practicability through an effective anti-mosquito effect of plants.

The invention discloses a kitchen oil fume purification method. The oil fume and odor in the kitchen air are sucked through a fan and are sent to a chemical reaction cabin; a chemical agent is atomized through an ultrasonic atomizing cabin; the atomized chemical agent is sent to a chemical reaction cabin through a pipeline and realizes chemical reaction with the oil fume; the reacted mist passes through a demisting cabin so as to realize mist-vapor separation. The invention further provides a device for implementing the method. The device comprises the chemical reaction cabin, wherein the chemical reaction cabin is connected with an oil fume collection hood; the ultrasonic atomizing cabin is arranged at one side of the chemical reaction cabin; the chemical reaction cabin is connected with the ultrasonic atomizing cabin; the demisting cabin is arranged at the other side of the chemical reaction cabin and is composed of at least one silk screen. According to the kitchen oil fume purification method and the device, both the oil stain and odor in the kitchen air can be eliminated, so that the purified oil fume can be emitted indoor and the problem that oil fume emission causes ambient environment pollution is solved.

The invention discloses an ecological circulating system for poultry breeding. The ecological circulating system comprises a planting region, a protective net and a first water supply pipe, wherein the planting region comprises planting soil, decomposition plants and a second water supply pipe for supplying water to the decomposition plants; the decomposition plants are planted on the planting soil; the second water supply pipe is arranged in the planting soil; the protective net is erected above the planting region; the edge of the protective net covers and closes the edge of the planting region, and a certain distance is reserved between the top of the protective net and the planting region; a grid through hole for communicating the planting region to the external environment is formed in the protective net; the water supply pipes are arranged at the top of the protective net; drinking devices through which poultries can drink water are arranged on the first water supply pipe. The ecological circulating system aims to solve the problems of large workload and high cost for excrement treatment in conventional poultry breeding.

The invention belongs to the field of daily necessities, and particularly relates to an antibacterial deodorization shoe cabinet with free radicals. The antibacterial deodorization shoe cabinet comprises a closed box, a small guiding draught fan installed inside the box, an air flow guiding pipe connected to an air exhausting opening of the small guiding draught fan and communicated in shoes and a free radical generator installed on the air flow guiding pipe; the air flow guiding pipe comprises a free-radical guiding main pipe arranged on one side of the small guiding draught fan and connected with an outlet of the small guiding draught fan and free-radical guiding branch pipes which are branched by the free-radical guiding main pipe to lead to all single shoes. The antibacterial deodorization shoe cabinet has the advantages that the free radicals are directly guided into in-shoe cavities through the guiding pipe, the combination probability of the free radicals and oxygen in air and nitrogen in air is reduced accordingly, and the stability before the free radicals are in contact with fetid ingredients / bacterium ingredients attached to the surfaces of substances inside shoes and the insides of fibers and the using efficiency of the free radicals are improved.

The invention discloses a road protective fence. The fence comprises a plurality of main piers and a plurality of auxiliary piers, each main pier and the two auxiliary piers at the two sides of the main pier form a protection unit. A deflection column is fixed to the bottom of each main pier, a base is rotatably connected to the bottom of each deflection column through a torsional spring, a rotating groove is formed in the side wall of each main pier, a motor groove is formed in the inner bottom of each rotating groove, and a speed adjusting motor is fixed to the inner wall of each motor groove. The method has the advantages that seven pigments, namely red, orange, yellow, green, blue, indigo and purple, are coated on the surface of a seven-color ribbon, the seven-color ribbon rotates, theseven-color ribbon seen by people appears to be a white light band by utilizing the visual persistence phenomenon of human eyes; when a person drives overspeed, the person is in a relatively static state with the ribbon when passing through the seven-color ribbon, the person can see a random color ribbon instead of the white color ribbon, and the color ribbon has obvious visual impact compared with the white color ribbon, so that the purpose of prompting people against overspeed is achieved.

The present invention discloses a sterilization insecticide palm meal fish feed and a preparation method thereof, and the feed comprises the following component in parts by weight: 180-210 parts of palm meal, 35-38 parts of tea seed cake powder, 15-17 parts of chicken liver powder, 23-25 parts of pepper meal, 3-4 parts of edible salt, 5-6 parts of Chinese pear vinegar, 21-25 parts of euphorbia thymifolia, 16-18 parts of Parthenocissus tricuspidata, 12-15 parts of Herba Pteridis multifidae, 24-26 parts of sweet potato powder, 4-6 parts of linseed powder, 1-2 parts of bunge pricklyash leaves, 32-36 parts of pine needles, 17-19 parts of Pennisetum hydridum, 14-16 parts of Artemisia selengensis, 1-2 parts of fish oil, 0.1-0.2 part of EM fermentative bacteria, 5-7 parts of pumpkin protein powder, 2-3 parts of hairyvein agrimony, 1-2 parts of poria, 1-2 parts of radix angelicae pubescentis, 3-4 parts of chitosan and 7-9 parts of whey powder. The sterilization insecticide palm meal fish feed can enhance the immune function of fishes, enhances the resistance of the fishes to bacteria, fungi and protozoa, reduces fish saprolegniasis, white skin disease, red skin disease, gill rot, lepidorthosis and other diseases, and improves fish breeding survival rate and benefits.

The invention discloses a kitchen oil fume purification method. The oil fume is conveyed into an oil fume reaction box through a fan; an oil removing and deodorizing agent is used for reacting with the oil fume; the solid particles and odor in the oil fume are deposited and decomposed respectively in the oil fume reaction box; the treated gas of the oil fume is exhausted through an overflow exhaust pipe of the oil reaction box and the waste liquid of the oil fume is exhausted through a drainage pipe. The invention further provides a device for implementing the method. The device comprises an oil fume collection hood, wherein at least one fan is arranged in the oil fume collection hood and is connected with an air storage box through an air inlet pipe; an air guide hold is formed in the bottom of the air storage box; the oil fume reaction box is arranged at the lower part of the air storage box and is connected with an agent storage box. According to the kitchen oil fume purification method and the device, both the oil stain and odor in the kitchen air can be eliminated; the device has a self-cleaning function and the problems that in a traditional method, a wall needs to be broken and bore for installing a traditional oil fume purification device and the device needs to be dismounted for cleaning are solved.

The invention discloses a preparation method of mosquito repellent liquid capable of eliminating formaldehyde. A traditional Chinese medicine preparation is extracted through supercritical extractionequipment; the extraction efficiency is higher; the medicine ingredient content of the extracted traditional Chinese medicine is high. A pre-emulsifying method is used for preparing a mixed solution;the compatibility of the mosquito repellent liquid is effectively improved. The preparation method is simple; the operation is convenient; a bamboo vinegar solution contains more than 200 kinds of organic compounds; harmful chemical substances such as sulphide, cyanide, methanol, benzene, formaldehyde and phenol can be absorbed and decomposed; in addition, the composition is pure natural and nontoxic. The formaldehyde is degraded through the bamboo vinegar solution; through the effective mosquito repellent effect by using plants, higher practicability is realized.

A method for killing the harmful living things in soil by use of ozone includes such steps as deep ploughing for breaking off the soil while spraying water until the content of water in soil is 55-75%, making ridges, covering a plastic film on the ridges, sealing the edges of said plastic film, filling ozone into the space under plastic film at the speed of 10g / hr for 90-150 hr, and removing the plastic film.