JP3450275B2 - How to recover the material from the soiled sanitary goods - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recovering a material from a contaminated sanitary article, and more particularly to a material for recovering the material from a contaminated sanitary article and a used sanitary article in a reusable manner. Regarding collection method. Further, the present invention is
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hygiene product material recovery method for recovering reusable hygiene product materials from dirty hygiene products, and particularly to a hygienic hygiene product material recovery method from used hygiene products.

[0002]

2. Description of the Related Art Hygiene products such as disposable diapers, dairy pads, urine pads and sanitary napkins are manufactured to be disposable. Such a disposable hygiene article is provided with a water-absorbing layer portion formed of a pulp material containing a superabsorbent resin between layers formed of two water-absorbing papers, and one water-absorbing paper layer below A water-impermeable plastic film is provided, and a nonwoven fabric is provided on the other water-absorbent paper. This disposable hygiene product is convenient because it can be repeatedly used and can be discarded after use without being cleaned by washing and is used in hospitals and homes.

[0003]

Even such a disposable hygiene article is required to be hygienic for the purpose of use, and it is simply soiled in the manufacturing process and then discarded and incinerated. Although the amount is small in total, the amount incinerated is not negligible and is a problem because the total amount is large. Since such sanitary products are required to be hygienic, it is difficult to reproduce them, and even the reproduction has not been discussed so far. In particular,
The so-called used diaper after use is soiled by stool and urine, and its treatment is exclusively by incineration. The amount of used paper diapers is enormous, and the disposal cost of used paper diapers is, for example, 100 to 160 per kg.
Since it is a yen, it is a big problem and is a problem. In addition, the incineration process is problematic because it requires a large amount of fuel and a large amount of manpower. SUMMARY OF THE INVENTION The present invention aims to solve the problems associated with the recycling of such dirty sanitary goods.

[0004]

In order to solve the above problems, the present invention disinfects or sterilizes Escherichia coli and other germs adhering to soiled hygiene products and recovers hygienic materials. With the goal. The present inventor has crushed (ie, crushed or crushed) a dirty sanitary article wet with a disinfectant,
The present invention has been accomplished by discovering that dirt can be separated from the material of the sanitary product or that the soiled material can be separated in the process of stirring in the disinfectant solution.

That is, according to the present invention, a hygiene article containing a water-absorbent resin which has absorbed water and is in the form of a gel, and which has been soiled with excrement or body fluid is crushed in the presence of a disinfectant to a particle size of 50 mm or less. The crushed sanitary article is dispersed in water containing a disinfectant to disintegrate the crushed article of the hygiene article into its individual ingredients to form a suspension containing the ingredient of the crushed article of the hygiene article. , This suspension is filtered through a sieve or a filter material having pores of 1 mm or less, and a part of dirt due to excrement or body fluid adhering to water containing sanitizer and hygiene products Is separated from the material of the crushed product of sanitary goods, and this filter residue is treated with a disinfectant.
Disperse it in the water it contains and
Suspension containing the ground material of the hygiene article
A liquid is formed, and this suspension is passed through a sieve with an opening of 1 mm or less.
Is filtered with a filter medium to make water and sanitary products containing disinfectant
Part of the remaining dirt from excrement or body fluid that had adhered
Is separated from the material of the hygiene product crushed product, and is separated here
The filtered residue is subjected to particle size separation under a spray of an antibacterial agent solution with a sieve having a sieve opening of 5 to 10 mm, and a sieving product mainly containing a pulp material and a water absorbent resin and a sieve mainly containing a plastic substance. Then, the sieved product mainly containing the pulp material and the water-absorbent resin is dried by heating , and the obtained dried product is dry-classified to obtain a classified product having a large pulp content and the classified product. It contains a water-absorbent resin that is in the form of a gel after absorbing water, which is characterized in that it is separated into classified products with a lower content of pulp.
It is a method of recovering the material from sanitary goods that are soiled by excrement or body fluid .

Further, the present invention also absorbs water to form a gel.
Contains water absorbent resin,
A dirty sanitary article is crushed in the presence of a disinfectant to a particle size of 50 mm or less, the crushed sanitary article is dispersed in water containing the disinfectant, and the pulverized product of the sanitary article is used as an individual material. To form a suspension containing the material of the pulverized product of the sanitary article, and the suspension is filtered through a sieve or a filter medium having pores with an opening of 1 mm or less to obtain a water containing a disinfectant. Also , part of the excrement or body fluid stains on the sanitary goods is separated from the material of the crushed sanitary goods, and the filtration residue is dispersed in hot water to remove the material of the crushed sanitary goods. hot water suspension containing the formed, the hot water suspension, opening of pores by filtration through a following sieve or filter medium 1 mm, hot water and the remaining contamination by excrement or body fluid adhered to the sanitary article A part of the product was separated from the crushed product of the sanitary goods, and the filtration residue of this hot water suspension was filtered through a sieve. Particle size separation under a spray of an antibacterial agent solution with a sieve having an opening of 5 to 10 mm to divide into a sieving product mainly containing a pulp material and a water absorbent resin and a sieving product mainly containing a plastic substance, and ,
A sieving product mainly containing a pulp material and a water-absorbent resin is dried by heating , and the obtained dried product is dry-classified to obtain a classified product having a large pulp content and a classified product having a pulp content lower than that of the classified product. Contains a water-absorbent resin in the form of a gel that absorbs water , characterized by being separated into products ,
A method of recovering the material from sanitary goods contaminated with excrement or body fluid .

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the term dirty sanitary goods means sanitary goods that have been soiled during the manufacturing process, transportation process and display process of sanitary goods, and used sanitary goods. In the present invention, the term crushing means crushing, coarse crushing, medium crushing and cutting. In the present invention, a dirty hygiene article means a dirty paper diaper, a dirty milk pad, a dirty urine pad, a dirty sheet, a dirty gauze, a dirty bandage or a dirty absorbent cotton, or a combination of two or more of these. To do. In the present invention, the hygiene article to which dirt is attached is
In particular, it means a used disposable diaper.

In sanitary products, particularly sanitary products such as disposable diapers and water-absorbent pads, a water-absorbent layer formed of pulp and a water-absorbent resin is disposed between layers of the water-absorbent paper, and the water-absorbent paper layer at the bottom is A water-impermeable plastic material film is provided on the lower side, and a water-permeable plastic material nonwoven fabric is provided on the upper side of the upper water-absorbent paper layer. In the case of used hygiene products, for example, used paper diapers, dirt such as stool and feces due to excretion adheres mainly to a part of the non-woven fabric made of plastic material, and dirt due to body fluid such as urine
Non-woven fabric made of plastic material, water-absorbing layer and part of the plastic material film are attached. Further, in the case of a used urine pad or milk pad, dirt due to body fluid such as sweat or urine adheres mainly to a part of the nonwoven fabric made of a plastic material, a part of the water absorbing layer and a part of the plastic material film.

In the present invention, a dirty sanitary article is sprayed with a disinfectant solution and wetted with the disinfectant solution prior to grinding. The sanitary article wet with the disinfectant solution is sent to a cutter or a crusher, where the sanitary article is cut or crushed to a size of 50 mm or less, preferably 30 mm or less. The crushed sanitary article cut or crushed by the cutter or the crusher has a soiled portion and an unstained portion, which facilitates separation. Further, in the present invention, the pulverized pulverized product of sanitary goods is introduced into the disinfectant solution under stirring to be decomposed into the material constituting the sanitary article, and most of the water-soluble stains attached to the material are Is dissolved in the disinfectant solution and separated from the material.
By the stirring action of the stirring member and the disturbing action of the disinfectant solution,
It can be unraveled and washed to separate most of it from the material.

The water-soluble dirt thus separated from the material is dissolved and transferred into the solution, and most of the solid dirt such as feces is finely dispersed and dispersed in the solution. The material of the hygiene article is washed and sterilized by stirring in the disinfectant solution. In order to separate the hygiene product material thus treated, the disinfectant solution in which the hygiene product material is suspended is sent to a sieve having, for example, an opening of 0.1 to 1 mm. Most of the water-soluble stains and solid stains adhering to the crushed product of sanitary goods due to the stirring treatment in the disinfectant solution,
Since it will be dissolved or suspended in the disinfectant solution,
Most of the water-soluble stains and solid stains adhering to sanitary goods are contained in the under-sieve or the filtrate by separating with a sieve or filter material having a screen opening of 0.1 to 1 mm. Separated from residue sanitary material. The material of the hygienic article thus separated is washed in a further disinfectant solution with stirring. By repeating the treatment in the disinfectant solution in this manner, the number of bacteria remaining in the material of the sanitary article is significantly reduced.

In the present invention, the sanitary article material treated with the disinfectant solution is finally immersed in hot water. Once again, the hygiene article material is rinsed and washed under agitation, which kills the germs adhering to the hygiene article material and significantly reduces the number of germs. The sanitary article material thus washed is subjected to sieving treatment with a sieve having an opening of 5 to 10 mm while spraying the antibacterial agent solution. The material of the sanitary goods mainly containing the plastic substance wet with the antibacterial agent solution is divided on the sieve, and the hygiene containing pulp and super absorbent resin wetted with the antibacterial agent solution on the sieve like the product on the sieve. Material of the article is divided.

The material for sanitary products containing the pulp under the sieve and the superabsorbent resin is a gel-like substance obtained by absorbing water from the superabsorbent resin, and the water contained in the superabsorbent resin is converted from the gel-like substance. Is washed with an aqueous solution of calcium chloride. The material for sanitary goods containing the pulp of the undersize product washed with a calcium chloride aqueous solution and dehydrated and the superabsorbent resin is dried by a dryer, for example, a blow dryer. The material of the hygienic product of the sieved product containing the dried pulp and the super absorbent resin has a relatively low content of the super absorbent resin, for example, 1 by a dry classifier such as air classification.
A material for sanitary goods having a low specific gravity containing a super-water-absorbent resin and pulp at a weight% or less, and a super-absorbent resin having a relatively high content, for example, a specific gravity including a super-water-absorbent resin and a pulp having a content of 3 wt% or more. Can be used as raw materials for sanitary goods and the like, respectively.

In the present invention, the disinfectant is used for sterilizing bacteria adhered to dirty sanitary goods, and is ozone, chlorine, sodium hypochlorite, calcium hypochlorite, lithium hypochlorite. , Chlorine dioxide, chlorine bromide, chlorinated isocyanuric acid, chloramine B or chloramine T. However, in addition to these disinfectants, disinfectants, antibacterial agents or bactericides generally used for sterilizing bacteria or microorganisms can be used. When a disinfectant solution is used as a means for sterilizing bacteria in hygiene products, the disinfectant concentration is increased when the treatment time is shortened. However, if the treatment time is 30 minutes or longer, the disinfectant can be used at a concentration that is normally used. For example, in the case of sodium hypochlorite solution, it is used in an amount of 0.05 to 3% by weight, but it can be used by appropriately increasing or decreasing each time by examining the result of disinfection.

In the present invention, crushing of used sanitary products such as used soil is carried out by continuously spraying the sanitary products by spraying the disinfectant solution in order to effectively use the time required for disinfection. It is preferably carried out. However, in the present invention, in order to disinfect a contaminated hygiene product, the pulverized product of the contaminated sanitary product is subjected to disinfection treatment under stirring in a disinfectant solution. It is preferably carried out in a batch mode because it is continued until the above condition is achieved. Sterilization can be performed continuously, but in this case, until the initial disinfection effect is achieved,
It is necessary to stay in the disinfection treatment tank, which requires a lot of equipment. Therefore, the crushed and contaminated sanitary goods, such as used ones, are left in a wet state with the disinfectant solution until the amount reaches a predetermined amount, and the disinfection is continued.

As the disinfectant, chlorine gas, liquid chlorine, sodium hypochlorite, bleaching powder, advanced bleaching powder (calcium hypochlorite), calcium hypochlorite, lithium hypochlorite, organic chlorine agent, Chlorine dioxide or ozone can be used. Ozone has a high decomposition rate, has a large sterilizing power and sterilizes in a short time, but chlorine has a smaller bactericidal power than ozone and requires a long time for sterilization. However, chlorine disinfectants
Liquid chlorine, sodium hypochlorite or calcium hypochlorite is preferably used in the present invention because the bactericidal activity is longer than that of ozone disinfectants. As for the solution concentration of the disinfectant, it is preferable to set the concentration of the disinfectant solution to be used according to the type of soiled hygiene product, the state of soiling and the processing time.

In the present invention, for example, boiling water or 80 ° C.
Hot water having the above temperature is used in the stirring and washing process. By rinsing with hot water while stirring in this way, the material of the sanitary goods is heated by the hot water, and the bacteria adhering to the material of the sanitary goods can be sterilized by the heat, and adheres to the material of the sanitary goods that has been recycled and recovered. Escherichia coli can be negative. In general, the number of bacteria before sterilization of disposable medical products, for example, a 10 ⁶ to 10 ^7/1 g raw cotton is absorbent cotton at 10 ² to 10 ^4/1 g, at 10 ² to 10 ^4/1 g with a gauze However, in the present invention, the material of the sanitary article to be recovered may have at least the number of bacteria equal to or less than the number of bacteria before sterilization of the above-mentioned disposable medical product. In the present invention,
Since Escherichia coli is killed and turned into a mere corpse and rarely remains, it is not a sanitary problem.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, but the present invention is not limited to the following description and examples. FIG. 1 is a process diagram showing an outline of a disinfection process of a dirty diaper treating apparatus according to an embodiment of the present invention. FIG. 2 is a schematic process diagram of a disinfecting soiled disposable diaper processing apparatus in the disposable diaper processing apparatus according to the embodiment of the present invention.

In this example, sodium hypochlorite is used as the disinfectant, and sodium hypochlorite is dissolved in water and used as a 0.2 wt% solution. An upper part 2 of the grinder 1 of the dirty paper diaper is provided with a supply port 3 for the dirty paper diaper, and the solution of the disinfectant is sprayed from a sprayer 4 provided above the supply port 3 for the dirty paper diaper. It Inside the grinder, above the dirty paper diaper feed port, the fumes of the sodium hypochlorite solution of the disinfectant generated by the sprayer 4, that is, the mist of the sodium hypochlorite solution is collected, A mist collector 5 is provided to prevent the mist from escaping from the crusher 1.
A crushing chamber 7 is formed in a lower portion 6 of the crusher 1, and a crushing blade 8 having a downwardly constricted shape is provided inside the crusher 1.
A rotary impact shearing crusher 9 driven by high speed is provided. The lower part 6 of the crusher 1 is a crushing chamber 7. The crushing chamber 7 communicates with the upper part of the crusher 1, and a supply port 11 of a dirty paper diaper is provided with an opening / closing damper 12 that can be opened and closed in the communicating portion. A first belt conveyor 14 is provided below the discharge port 13 of the crushing chamber 7, and the crushed pieces of the dirty paper diaper crushed in the crushing chamber 7 are configured to drop onto the first belt conveyor 14. Has been done.

Below the end portion 15 of the first belt conveyor 14, a supply chute 16 of the soiled diaper crushed material is formed, and the crushed soiled diaper crushed material conveyed by the first belt conveyor 14 is supplied. It is supplied from the chute 16 onto the second belt conveyor 17 provided below the supply chute 16. Second belt conveyor 17
Is provided so that its discharge part 18 is located on the crushed material supply port 20 of the dirty paper diaper of the first cleaning tank 19, and the crushed material of the dirty paper diaper sent to the second belt conveyor 17 is The second belt conveyor 17 feeds the crushed material of the soiled diaper to the first cleaning tank 19 through the crushed material supply port 20.

The first cleaning tank 19 is provided with a pipe 21 for supplying a disinfectant on the upper part thereof, and a disinfectant solution is provided so that the crushed material of the dirty paper diaper can be broken and sufficiently disinfected. Stir and mix. In the present example, stirring and mixing the crushed pieces of the dirty paper diaper in the disinfectant solution means that the crushed pieces of the dirty paper diaper are made of non-woven fabric made of plastic material, which is the individual material of the paper diaper, water-absorbent paper, pulp, highly water-absorbent. Dissolve into individual resin and plastic material film, etc.
This is for disinfection by sufficiently contacting the disinfectant. For this reason, in this example, the stirrer 2 including the stirring blades 22 is used.
3 is provided. A crushed product of a soiled paper diaper is disturbed and unraveled in a disinfectant, and is crushed from a crushed paper diaper crushed product, a crushed product of a plastic film, a crushed product of a water-absorbent paper, a crushed product of a nonwoven fabric made of a plastic material, a pulp. And the super absorbent polymer is disinfected while cleaning and separating the dirt adhering to them by a disinfectant solution.

In the present example, a perforated plate 25 having an opening of 0.1 mm is provided at the bottom 24 of the first cleaning tank 19, and a crushed product of a plastic film disintegrated and sterilized by this, a plastic The non-woven fabric, crushed water-absorbent paper, pulp, superabsorbent resin, and other materials remain as sediment on the perforated plate 25, and dirt adhering to these materials is washed to obtain the perforated plate 25. Separated through a 0.1 mm opening in the. The dirt that has passed through the perforated plate 25 is discharged to the outside of the tank via a discharge pipe 26 provided at the bottom 24 of the tank.

In the first washing tank 19, sediments of materials including plastic, water-absorbent paper, pulp, superabsorbent resin, etc. settled on the perforated plate 25 along the upper surface of the perforated plate 25 and the inner wall surface 28 of the tank. Scraping claw 29 provided on the outside
It is scraped off by a first sedimentation scooping machine 31 provided with a chain conveyor 30 having and is sent to the second cleaning tank 33 from its end 32.

In this example, in order to send the sediment of the first cleaning tank 19 to the second cleaning tank 33, the delivery end 32 of the first sedimentary scraper 31 has the delivery end 32 of the second cleaning tank 33. It is located above the sediment supply port 34. The second cleaning tank 33 has a structure similar to that of the first cleaning tank 19, and a pipe 35 for supplying the disinfectant solution is provided on the upper portion thereof and a stirrer 37 having a stirring blade 36 is provided. The material of the crushed soiled diaper crushed in the first cleaning tank 19 and washed and disinfected with the disinfectant solution is mixed with the disinfectant so as to be further disintegrated and further disinfected. To be done.

In this example, a perforated plate 39 having an opening of 0.1 mm is provided at the bottom 38 of the second cleaning tank 33, like the first cleaning tank 19. Second cleaning tank 33
In the above, since the material of the crushed and disinfected soiled diaper crushed material is larger than 0.1 mm,
The dirt remaining on the perforated plate 39 as a sediment without passing through the 1 mm opening, and the dirt adhering to these materials is washed away. Since most of the released dirt is smaller than 0.1 mm, it is separated through the 0.1 mm opening of the perforated plate 39. The dirt that has passed through the perforated plate 39 is discharged to the outside of the tank through a discharge pipe 40 provided at the tank bottom 38.

In the second cleaning tank 33, the sediment of the material of the disposable diaper settled on the perforated plate 25 is provided along the upper surface 41 of the perforated plate 39 and the inner wall surface 42 of the tank, and the scraping claw 43 on the outside. Is scraped off by a second sedimentation scooping machine 45 comprising a chain conveyor 44 having
Sent to the third cleaning tank 47. In this example, in order to send the sediment of the second cleaning tank 33 to the third cleaning tank 47, the delivery end portion 46 of the second sediment rake 45 is provided with the sediment supply of the third cleaning tank 47. Located above the mouth 48.

The third cleaning tank 47 further disinfects the sediment of the second cleaning tank 33 that has been disinfected in the disinfectant, and Escherichia coli is detected in the sediment produced in the second cleaning tank 33. If not, it can be omitted. A hot water supply port 49 is formed in the upper part of the third cleaning tank 47 so that hot water can be disinfected. In this example, hot water heated to a boiling temperature is supplied from the hot water supply port 49 to the third cleaning tank. 47
Supplied within. The microorganisms hidden in the sediment from the second cleaning tank 33 and not in contact with the disinfectant are also heated by the hot water, so that they can be disinfected by heat. An agitator 51 having an agitating blade 50 is provided in the third cleaning tank, and the material of the crushed paper diaper crushed sediment from the second cleaning tank 33 is further stirred by the agitator 51. It is unwound and further sterilized with boiling water.

In the present example, the tank bottom portion 52 of the third cleaning tank 47 is also 0.1 mm, like the second cleaning tank 33.
A perforated plate 53 having an opening is provided. In the third cleaning tank 47, the material of the disintegrated and disintegrated diaper crushed product is larger than 0.1 mm, so that it does not pass through the opening of the perforated plate 53 and remains as a sediment on the perforated plate 53.
Dirt adhering to these materials is washed and released. Since most of the released dirt is smaller than 0.1 mm, it is separated through the 0.1 mm opening of the perforated plate 53. The dirt that has passed through the perforated plate 53 is discharged to the outside of the tank via the discharge pipe 54 provided in the tank bottom portion 52.

In the third cleaning tank 47, the sediment of the material of the diaper settled on the perforated plate 53 is provided along the upper surface 55 of the perforated plate 53 and the inner wall surface 56 of the perforated plate, and the scraping claw 57 is provided outside. Is scraped off by a third sediment rake 59 with a chain conveyor 58 having
Is supplied to the wet-type vibrating screen 62 from the fixed-quantity screw conveyor 61. In this example, the wet vibration sieving machine 62 is sprayed with the antibacterial agent solution 63 in order to prevent clogging, disinfect the discharged material, and deodorize. In this example, as the antibacterial agent solution, Pansil BA210-1 (manufactured by Release Chemical Industry Co., Ltd., which has an antibacterial function and a deodorant function,
A 1 weight percent solution of trade name) was used.

In the present embodiment, the upper sieve 6 4, mesh sieve is used 10mm sieve, the lower sieve 6 5, mesh of the sieve is used 5mm sieve. Accordingly, in this embodiment, on the sieve of the upper sieve 6 4 be of more granularity 10 mm, a material mainly containing a pulverized product of pulverized and made of plastic material non-woven plastic material film, the upper discharge channel It is discharged from 6 6 . On a sieve of the lower sieve 6 5 it is of a particle size of 10mm to 5 mm, comprising a relatively high content of the pulp, a material containing a superabsorbent polymer with a relatively low content, intermediate stage discharge path 6 7
More discharged. Undersize of the lower sieve 6 5 be of a particle size of less than 5 mm, wherein the pulp at a lower content than the effluent of the intermediate stage, higher content than emissions of the intermediate stage superabsorbent resin a material comprising output rate is discharged from the lower discharge passage 6 8.

[0030] discharged from the upper discharge path 6 6 and the intermediate stage discharge passage 6 7, material of crushed disinfected disposable diapers are transported by the first material discharge conveyor 68 'is combined.
Material crushed disinfected disposable diapers has been discharged from the lower discharge passage 6 8 is conveyed by the second material discharge conveyor 69. The first material discharge conveyor 68 ′ is connected to the centrifugal dehydrator 70, and the material of the sterilized diaper crushed diaper conveyed by the first material discharge conveyor 68 ′ is sent to the centrifugal dehydrator 70. Water is separated by.

The transport conveyor 72 of the centrifugal dehydrator 70 is
It is connected to the first hot air dryer 73, and the dehydrated product of the dehydrated and sterilized crushed material of the diaper is conveyed by the conveyor 72.
Is sent to the first hot air dryer 73 and dried with hot air.
The transport conveyor 74 of the first hot air dryer 73 is the storage device 7
The dry material of the crushed material of the sterilized paper diaper, which is connected to No. 5 and is hot-air dried by the first hot-air dryer 73, is sent to the first storage device 75 and stored therein. The material stored in the storage device 75 is a material containing the main components of plastic material, pulp and super absorbent resin, and can be formed into pellets and used for gardening products such as cat sand, solid fuel or piles and sleepers. Further, the sheet is formed by arranging it between water-absorbent papers to form a sheet, or between a plastic film and a nonwoven fabric made of a plastic material, and arranging the sheet formed into a sheet to form a sheet, for example, , Water absorbent sheet, pet sheets, plywood, cushioning material, roofing sheet, waste cloth, construction sheet, pallet material, oil absorbing sheet.

[0032] The second material discharge conveyor 69 is connected to the drying tub 78 with a supply pipe 77 of powdered calcium chloride of a dehydrating agent, is conveyed by the second material discharge conveyor 6 9, gelatinous superabsorbent The material of the crushed diaper crushed product containing a relatively large amount of resin is supplied to the dehydration tank 78. The dehydrating tank 78 is provided with a stirrer inside thereof, and at the bottom thereof, a porous plate having an opening with a hole diameter of 0.1 mm, for example, and powdered calcium chloride of the dehydrating agent is supplied from the calcium chloride supply pipe 77. It is filled. Therefore,
The superabsorbent resin in the raw material of the soiled disposable diaper supplied to the dehydration tank 78 is dehydrated and regenerated with an aqueous 5% by weight calcium chloride solution under stirring. The conveyor 79 of the dehydration tank 78 is connected to the second hot air dryer 80,
The material dehydrated in the dehydration tank 78 is sent to the second hot air dryer 80 to be hot air dried. On the other hand, the calcium chloride used in the dehydration tank 78 absorbs water and becomes a liquid, and is discharged from the discharge pipe 81 at the bottom of the dehydration tank 78, and the discharge passage 2
6 is joined to the wastewater treatment tank (not shown) and is treated by the activated sludge method or the like.

The dry matter discharge passage 82 of the hot air dryer 80 is connected to the inlet 84 of the cyclone type dry classifier 83, and the material dried by the hot air dryer 80 with hot air is blower (not shown). ) Is supplied to the dry classifier 83 from the inlet 84 by the air flow. In the dry classifier 83, an outlet 85 for a light classification component provided in the central portion of the upper part is connected to a flow path 86, and an outlet 87 for a heavy classification component is connected to a flow path 88. There is. The flow path 86 is connected to the second storage device 89. A bag filter 90 is provided on the top of the second storage device 89 to prevent the finely divided classification components from flowing out of the second storage device 89. The dry classifier 8
Among the classified substances in 3, the light classified component is a material rich in pulp and is sent from the flow path 86 to the second storage device 89 for storage. This pulp-rich material is taken out from a take-out conveyor 91 provided in the lower part of the second storage device 89. This pulp-rich material is, for example, placed between water-absorbent papers, or between the plastic film and the non-woven fabric made of plastic material, and the formed sheet is placed on the sheet to form, for example, a water-absorbent sheet. , Pet sheets, waste cloth, oil absorbing sheet, toilet paper, toilet seat sheet.

The flow path 88 is connected to a third storage device 92. At the top of the third storage device 92, a bag filter 93 is provided so that finely divided classification components do not flow out of the third storage device 92. The heavy classification component classified by the dry classifier 83 is a material rich in superabsorbent resin, and is sent from the flow path 88 to the third storage device 92 for storage. The material rich in super absorbent resin is the third storage device 92.
Is taken out from the take-out conveyor 94 provided in the lower part of the. The material rich in superabsorbent resin can be used, for example, as a soil water retention agent for agriculture and horticulture by being formed into pellets, and can be used as a soil for growing plants for nursery and horticulture, and is also rich in superabsorbent resin. Can be used as a water absorbent sheet for raising seedlings by arranging it between water absorbent papers and forming it into a sheet.

[0035]

Industrial Applicability According to the present invention, a sanitary article having dirt adhered thereto is crushed, and the crushed sanitary article is dispersed in water containing a disinfectant to obtain a part of the dirt adhered to the sanitary article. Is separated from the crushed product of the hygiene product, and the material is sterilized from the hygiene product with stains, washed and collected as a clean product, and the material of the hygiene product is effectively used. Yes, it makes effective use of dirty sanitary goods that have been traditionally discarded as raw materials for sanitary goods, horticulture and agricultural products, and costs for disposing of the waste costs for the production of effective raw materials. It contributes to the reduction of waste and the effective use of resources to avoid waste of resources as much as possible. Moreover, the amount of processing is enormous, and new industries can be established, which greatly contributes to society.

[Brief description of drawings]

FIG. 1 is a process diagram showing an outline of a disinfection process of a dirty paper diaper processing apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic process diagram of a disinfected dirty paper diaper processing apparatus in the paper diaper processing apparatus according to the embodiment of the present invention.

[Explanation of symbols]

1 crusher 2 Upper part of crusher 1 3, 11 Supply port 4 sprayer 5 Mist collector 6 Lower part of crusher 1 7 Crushing chamber, electric motor 8 crushing blades 9 rotary impact shear crusher 12 Open / close damper 13 outlet 14 First belt conveyor 15 End of first belt conveyor 16 Crushed material supply chute 17 Second belt conveyor 18 Discharge part 19 First washing tank 20 Crushed material supply port 21 Piping for supplying disinfectant 22, 36, 50 Stirrer blade 23, 37, 51 Stirrer 24, 38, 52 Bottom of tank 25, 39, 53 Perforated plate 26, 40, 54, 81 Discharge pipe 28, 42, 56 Inner wall surface 29, 43, 57 scraping claw 30,44,58 Chain conveyor 31 First sediment fried machine 32, 46 Delivery end 33 Second cleaning tank 34, 48 Sediment supply port 35 piping 41 upper surface of perforated plate 39 45 Second sediment fried machine 47 Third cleaning tank 49 Hot water supply port 55 Top surface of perforated plate 53 59 Third Sediment Lifter 60 End of the third sediment raker 61 Fixed amount screw conveyor 62 Wet vibrating screener 63Antibacterial solution 64Upper sieve 65Lower sieve 66Upper discharge path 67Middle stage discharge path 68Lower discharge path 68 '   First material discharge conveyor 69 Second material discharge conveyor 70 Centrifugal dehydrator 72, 74, 79 Conveyor 73 First hot air dryer 75 Storage device 77 Supply pipe 78 dehydration tank 80 Second hot air dryer 82 Discharge path 83 Dry classifier 84 inlet 85 Light classification component outlet 86, 88 flow paths 87 Heavy classification component outlet 89 Second storage device 90, 93 Bug filter 91, 94 Take-out conveyor 92 Third storage device

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI // B01D 29/00 B07B 7/08 B03B 5/00 B29B 17/02 9/06 B09B 5/00 ZABZ B07B 7/08 Q B29B 17/02 B01D 23/02 A (58) Fields investigated (Int.Cl. ⁷ , DB name) B09B 3/00-5/00 A61L 2/00-2/26 A61L 11/00

Claims (8)

(57) [Claims] 1. A hygienic article containing a water-absorbent resin which has absorbed water and is in the form of a gel, and which has been soiled with excrement or body fluid is crushed in the presence of a disinfectant to a particle size of 50 mm or less, and the crushed hygiene is used. Disperse the article in water containing a disinfectant,
The crushed product of the hygiene article is disintegrated into its individual materials to form a suspension containing the material of the crushed product of the hygiene article, and the suspension is used as a sieve or filter medium having pores of 1 mm or less. in filtered, adhering to the water and sanitary goods containing disinfectant discharge
Part of the dirt from excrement or body fluid is separated from the material of the crushed product of hygiene products, and the filtration residue is taken up in water containing a disinfectant.
Disperse into the material and disintegrate the crushed product of the hygiene product into its material
To form a suspension containing the material of the ground material of the hygiene article,
This suspension is filtered through a sieve or filter material with an opening of 1 mm or less.
Adhered to water and sanitary products containing disinfectant
Remove some of the remaining dirt from excrement or body fluids from sanitary products.
It is separated from the material of the pulverized product, and the filtration residue separated here is subjected to particle size separation under the spraying of the antibacterial agent solution with a sieve having a sieve opening of 5 to 10 mm to mainly contain a pulp material and a water-absorbent resin. The sieving product and the sieving product mainly containing the plastic substance are separated, and then the sieving product mainly containing the pulp material and the water absorbent resin is dried by heating , and the obtained dried product is dry classified, A water-absorbing gel characterized by being separated into a classified product having a high pulp content and a classified product having a lower pulp content than the classified product.
Excrement or body fluid containing water-absorbent resin
How to recover that material from hygiene items that have become dirty . 2. A water absorbent resin which absorbs water to form a gel.
A sanitary article that contains, and is soiled with excrement or body fluid is crushed in the presence of a disinfectant to a particle size of 50 mm or less, and the crushed sanitary article is dispersed in water containing the disinfectant,
The crushed product of the hygiene article is broken into individual materials to form a suspension containing the material of the crushed product of the hygiene article, and this suspension is sieved with pores of 1 mm or less or After filtering with a filter medium, the wastewater that has adhered to the sanitizer- containing water and sanitary
Part of the dirt caused by excrement or body fluid is separated from the material of the pulverized product of sanitary goods, and this filter residue is dispersed in hot water to form a hot water suspension containing the material of the pulverized product of sanitary goods. , the hot water suspension, opening of pores by filtration through a following sieve or filter media 1 mm, adhered to the hot water and the sanitary article excretion
The remaining part of the dirt caused by the substance or body fluid is separated from the crushed product of the sanitary article, and the filtration residue of this hot water suspension is sprayed with an antibacterial agent solution through a sieve having a sieve opening of 5 to 10 mm. Particle size separation is performed to separate the sieving product mainly containing the pulp material and the water absorbent resin and the sieving product mainly containing the plastic substance, and then the sieving product mainly containing the pulp material and the water absorbent resin is heated. dried, the resulting dried product was dry classification, and the large classification product pulp content, water to gel and separating the said classification product than content is less classifying products of the pulp Tona
It contains a water-absorbing resin that is contaminated with excrement or body fluids.
How to recover the material from the sanitary goods. 3. The dirty hygiene article is a dirty paper diaper, a dirty milk pad, a dirty urine pad, a dirty sheet, a dirty gauze, a dirty bandage or a dirty absorbent cotton, or a combination of two or more of these. The water-absorbent resin which is in the form of a gel after absorbing water according to claim 1 or 2,
A method of recovering materials from hygiene products that contain and are soiled by excrement or body fluids . 4. The disinfectant is ozone, chlorine, sodium hypochlorite, calcium hypochlorite, lithium hypochlorite, chlorine dioxide, chlorinated isocyanuric acid, chloramine B or chloramine T. The water-absorbent tree which is in the form of a gel after absorbing water according to claim 1 or 2.
A method for recovering the material from a hygiene article containing fat and contaminated with excrement or body fluid . 5. The disinfectant is 0.05 to 3% by weight of hypochlorous acid.
A sodium chlorate solution, characterized in that
Or a water-absorbent resin which is in the form of gel after absorbing water
A method for recovering the material from a sanitary article containing the, and contaminated with excrement or body fluid . 6. The water-absorbent resin which is in the form of a gel after absorbing water according to claim 1 or 2, wherein the hygiene article to which dirt is attached is a used disposable diaper.
However, a method of recovering the material from sanitary goods contaminated with excrement or body fluid . 7. The recovered hygiene article material contains dead water-absorbing gelated water-absorbent resin according to claim 1 or 2, wherein dead Escherichia coli adheres to the material.
A method of recovering the material from a sanitary article that has and is soiled by excrement or body fluid . 8. Hot water is boiling water or a temperature of 80 ° C. or higher.
Absorbing water according to claim 2, which is hot water
Excrete or body containing water absorbent resin in gel form
How to recover the material from hygiene items that are soiled by liquid.