JP3840385B2 - How to recover the material from contaminated sanitary goods - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a method for recovering raw materials from soiled sanitary products, and in particular, from sanitary products soiled at the time of manufacture and used sanitary products, such as pulp materials, water-absorbing resins and paper powders used in the sanitary products. The present invention relates to a method for recovering a material from a dirty sanitary article for recovering the material reusably. The present invention also relates to a method for recovering a sanitary product material for recovering a reusable sanitary product material from a dirty sanitary product, and in particular, recovering a sanitary sanitary product material from a used dirty sanitary product. Regarding the method. Furthermore, this invention relates to the absorber, the sheet, the excrement disposal material, or the flowerpot manufactured using the raw material for sanitary goods collect | recovered from the sanitary sanitary goods reusably.
[0002]
[Prior art]
Sanitary goods such as disposable diapers, milk pads, urine pads and sanitary napkins are manufactured to be disposable. Such a disposable sanitary article is provided with a water-absorbing layer portion formed of a pulp material containing a highly water-absorbent resin between the layers formed of two water-absorbing papers, and below one water-absorbing paper layer. An impermeable plastic film is provided, and a non-woven fabric is provided on the other water absorbent paper.
Since this disposable hygiene product is not used repeatedly, it is not necessary to be cleaned by washing and can be disposed of after use, so it is convenient and used in hospitals and homes.
[0003]
[Problems to be solved by the invention]
Even such disposable sanitary goods are required to be hygienic for the purpose of use, and are discarded and incinerated simply by being contaminated in the manufacturing process. Even if the amount is a small percentage as a whole, the amount of incineration treatment is not negligible and is problematic because the total amount is large. Since such hygiene products are required to be hygienic, it is difficult to regenerate them, and so far, even regenerating has not been discussed. In particular, so-called used diapers after use are dirty with stool and urine, and the 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 yen per kg. In addition, the incineration process is a problem because it requires a large amount of fuel and a large amount of manpower.
The object of the present invention is to solve the problems associated with the recycling process of such dirty sanitary goods.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, an object of the present invention is to disinfect or sterilize Escherichia coli and other germs adhering to a dirty sanitary product and recover a sanitary material.
The present inventor, in a substantially sealed space, dries sanitary goods soiled by hot air, dries and disinfects the dirt adhering to the sanitary goods material, and the dirt can be treated in a sanitary manner. As a result, the present invention has been discovered.
[0005]
That is, the present invention heats a sanitary article to which dirt is attached to a temperature of 80 ° C. or more, dries the sanitary article to which the dirt adheres, and sieves the dried sanitary article under forced vibration. Separately, a part of the dried soil is separated from the sanitary product, the sanitary product from which the part of the soil is separated is crushed, the crushed material is sieved, a portion rich in plastic material, pulp material The present invention provides a method for recovering a raw material from a sanitary article to which dirt is attached, characterized by separating a portion rich in powder and a powdery portion, and separating a portion rich in pulp material by dry classification. The hygienic product with dirt is blown and heated to a temperature of 80 ° C. or higher on a mesh having an opening of 30 mm or more, and the hygienic product with dirt is dried. For sieves with openings of 30 mm or more under forced vibration The dried sanitary product is separated from the sanitary product, the sanitary product from which the part of the soil is separated is crushed to a particle size of 20 mm or more, and the crushed product is 20-30 mm in size. Sieving with a first sieve with an opening, sieving with a second sieve with an opening of 10 to 20 mm, then sieving with a second sieve with an opening of 10 to 20 mm, Sieving with a third sieve with an opening of 5 to 10 mm, the particle size part on the second sieve under the first sieve rich in plastic material, on the third sieve under the second sieve rich in pulp material The particle size portion under the third sieve including the particle size portion and the powdery portion is separated from each other, and the particle size portion rich in the plastic material and the particle size portion rich in the pulp material are separately separated by dry classification. There is a method for collecting the material from sanitary goods that are contaminated. In addition, the present invention is such that the sanitary product to which dirt is attached is blown and heated to a temperature of 80 ° C. or higher on a mesh having an opening of 30 mm or more to dry the sanitary product to which the dirt is attached. The sanitary ware that has been separated is separated from the sanitary ware by sieving the sanitary ware using a sieve having an aperture of 30 mm or more under forced vibration, and the sanitary ware from which part of the soil has been separated is 30 mm or less. The coarsely crushed material is sieved with a first sieve having an opening of 20 to 30 mm, and the lower sieve portion of the first sieve is divided into a second sieve with an opening of 10 to 20 mm. Sieving, and sieving the sub-sieving portion of this second sieve with a third sieve having an opening of 5 to 10 mm, the particle size part on the second sieving under the first sieving rich in plastic material, A second sub-siege rich in pulp material with a particle size part and a powdery part on the third sieve The particle size portions are separated, the particle size portion under the third sieve including the powdery portion is suspended in a disinfectant solution, and this suspension is filtered with a filter medium having a pore opening of 1 mm or less. Then, a part of the dirt adhering to the sanitary product is separated from the powdery part, and the filtration residue is dispersed in the hot water to form a hot water suspension containing the pulverized material of the sanitary product. The hot water suspension is filtered with a filter medium having a pore opening of 1 mm or less to separate a part of the remaining dirt adhering to the sanitary product from the pulverized product of the sanitary product. The filtration residue of the hot water suspension is subjected to particle size separation by spraying a substance solution having a bactericidal action with a sieve having a sieve opening of 5 to 10 mm, and sieved mainly containing pulp material and water absorbent resin Divided into a part and a sieving part mainly containing a plastic substance, then pulp material and The sieved portion mainly containing the aqueous resin is dried, and the resulting dried product is dry-classified into a classified product having a large pulp material content and a classified product having a pulp material content less than the classified product. There is a method for recovering the material from a sanitary product to which dirt is attached, characterized by separating.
000 6 ]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, the term dirty sanitary ware refers to sanitary ware that has been soiled in the manufacturing process, transportation process, and display process of sanitary ware, as well as used sanitary ware. In the present invention, a dirty sanitary 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 hygiene articles. To do.
00 07 ]
Hygiene products, in particular paper diapers, milk pads, urine pads or sheets, have a water-absorbing layer formed of pulp material and water-absorbing resin between the layers of water-absorbing paper, and under the water-absorbing paper layer at the bottom An impermeable plastic material film is provided on the side, and a non-woven fabric of the water permeable plastic material is provided on the upper side of the upper absorbent paper layer. In the case of used sanitary goods, such as used paper diapers, dirt due to excretion, especially stool, adheres mainly to a part of non-woven fabric made of plastic material, and dirt caused by body fluids such as urine is made of plastic material. It adheres to a part of a nonwoven fabric, a water absorbing layer, and a plastic material film. Also used urine pad , In the case of a milk pad, dirt due to body fluids such as sweat and urine adheres mainly to a part of a nonwoven fabric made of plastic material, a part of a water absorption layer part, and a part of a thin layer part made of plastic material.
00 08 ]
In the present invention, soiled sanitary goods are attached with bodily fluids such as excrement, sweat and urine, and in order to kill Escherichia coli and other various bacteria present there, a temperature of 80 ° C. or higher, preferably 100 ° C. Heat drying is performed with the above temperature, more preferably hot air having a temperature of 110 ° C. or higher. This kills the bacteria attached to the hygiene product and significantly reduces the number of viable bacteria. Further, by drying in this manner, dirt, particularly solid excrement, is easily crushed, easily peeled off, and easily separated. In the case of paper diapers and sheets, since a polyethylene film is used for the water-impermeable thin layer portion, it is preferable to dry with hot air at a temperature as high as possible at a temperature equal to or lower than the welding temperature. This hot air drying can be performed, for example, on a porous material such as a relatively large pore size or open wire mesh or a perforated plate while applying a forced vibration. Can be done. In particular, it is preferable to dry the paper diaper while floating it on a wire mesh or in a drying chamber with hot air, because the knot of the paper diaper is broken, and the filth wrapped in the paper diaper is dropped and separated from the paper diaper. After drying or at the time of drying, unwrapping or opening the wrapped paper diaper by scratching it with a stick or plate so that the paper diaper is not broken, and separating the flakes by peeling off. Can do. Odors generated during drying or sieving are discharged collectively or individually after deodorization.
00 09 ]
The dried sanitary goods are sieved under forced vibration, for example, with a 30 mm sieve. The solid waste adhering to the sanitary ware is partially separated from the sanitary ware by sieving by drying, and the solid excreta still adhering to the sanitary ware becomes brittle and can be easily broken or crushed by the impact. It is wiped off and sieved and removed. The solid excrement removed here is sent to the sludge treatment step for processing. In the present invention, in the drying process, a sanitary article that is not completely melted, for example, a paper diaper, is completely unwound, and a scraper is erected on the rotating body to scrape off adhering solid excrement. A scratching step comprising a rotary scratching device that rotates the scraping bar with rotation can be provided next to the drying step. Sanitary goods such as paper diapers that have been disposed of and can be wiped off by disposing of the sanitary goods that have been disposed of are sent to the separation process by forced vibration to remove the filth. be able to.
001 0 ]
In the drying process, or in the drying process and the scratching process, a part of the dirt is separated, and the dried dirty sanitary ware is sent to a crushing process equipped with a cutting machine or a crushing machine, and the cutting machine or crushing machine It is crushed to a particle size of 50 mm or less, preferably 30 mm or less. In this way, when sanitary goods such as paper diapers are crushed to a particle size of 50 mm or less, preferably 30 mm or less, the water-permeable thin layer part, the water-impermeable thin layer part, the water-absorbing paper and the water-absorbing layer part of the sanitary goods are respectively cut or It is crushed.
Most of the solid content is retained in the water-permeable thin layer in the sanitary hygiene product, and some of the liquid content such as sweat and urine adheres to the water-permeable thin layer in the soil. Since the water-absorbing paper, pulp material, and water-absorbing resin are absorbed by the water-absorbing layer, the dirt is crushed together with the material to which the dirt adheres, for example, by a crushing process using a crusher, and some of the dirt is fine. It becomes a crushed material. Therefore, in the present invention, in the crushing step, the crushed material that has been crushed to a particle size of, for example, 50 mm or less, preferably 30 mm or less is separated by a sieve. Separation by this sieve. That is, the sieving can be performed by a sieving apparatus provided with a plurality of stages. However, for example, according to the crushing particle size, the upper stage is provided with a sieve with an opening of 50 to 30 mm, the middle stage is provided with a sieve with an opening of 15 mm, preferably a sieve with an opening of 10 mm, and the lower stage is provided with a 5 mm opening. This is preferably carried out using a sieving apparatus provided with a sieve having three openings, ie, an upper stage, a middle stage and a lower stage. In this case, the part of the upper sieve on the sieve can be returned to the cutter or crusher and crushed again, and the middle sieve on the sieve can be compared with the pulp material and the superabsorbent resin. It is a part rich in plastic material, and it is separated by a dry and wet classification device such as air classification or cyclone, so that the part rich in pulp material and superabsorbent resin is separated and the part rich in plastic material is recovered. can do. Furthermore, the upper sieve portion of the lower sieve is a portion rich in pulp material and water-absorbing resin as compared with the plastic material, and the portion rich in plastic material is separated by dry and wet classification treatment. The portion rich in the pulp material and the water-absorbing resin can be recovered. The lower sieving portion of the lower sieving portion is a portion containing the solid content of the soil in the form of powder, and is sent to the sludge treatment step for processing.
001 1 ]
Each of the classified products obtained by the dry classification treatment is washed with a liquid containing a disinfectant since each of the classified products is attached with a small amount of dirt. The washed classified products can be rinsed with water, dehydrated and dried to be recycled materials. However, in each classification product obtained by the wet classification process, the dirt is separated in the classification process. In any case, the number of bacteria remaining on the material of the sanitary product to be recovered is significantly reduced by finally sterilizing and rinsing with the disinfectant-containing liquid.
001 2 ]
In the present invention, the recovered sanitary article material includes a pulp material and a superabsorbent resin which are more or less contained, and therefore, the superabsorbent contained by washing with a solution containing a disinfectant and rinsing with water. The resin absorbs water and becomes a gel-like substance. In order to separate and remove the water contained in the gel-like highly water-absorbent resin, the recovered sanitary article material is a dryer, For example, it is dried by a blow dryer.
001 3 ]
In the present invention, the substance having a bactericidal action is used for killing microorganisms adhering to dirty sanitary goods, and ozone, chlorine, sodium hypochlorite, calcium hypochlorite, hypochlorous acid, and the like. There are disinfectants and disinfectants such as lithium chlorate, chlorine dioxide, chlorine bromide, chlorinated isocyanuric acid, chloramine B or chloramine T. However, in addition to these disinfectants and disinfectants, disinfectants or disinfectants that are generally used for killing microorganisms can be used. In the case of using a disinfectant solution as a means for sterilizing bacteria and other microorganisms in sanitary goods, the concentration of the disinfectant solution is increased when the treatment time is shortened. However, if the treatment time is 30 minutes or more, the disinfectant can be used at a concentration that is normally used. For example, in the case of a sodium hypochlorite solution, it is used in an amount of 0.05 to 3% by weight. However, the results of disinfection can be examined, and the amount can be increased or decreased as appropriate.
001 4 ]
In the present invention, the cleaning of classified products of classified sanitary products with a liquid containing a disinfectant is continuously performed by spraying a liquid containing a disinfectant in order to effectively use the time required for disinfection. Can do. However, in the present invention, the classified product of the sanitary product is sterilized by immersing the classified product in a disinfectant-containing liquid with stirring, and this sterilization treatment achieves the desired disinfecting effect. In the meantime, it is necessary to continue the disinfection by staying in the disinfection treatment tank, so that it can be carried out by batch operation or continuous operation.
001 5 ]
When cleaning classified products in water with disinfectant, chlorine gas, liquid chlorine, sodium hypochlorite, bleaching powder, advanced bleaching powder (calcium hypochlorite), calcium hypochlorite, lithium hypochlorite, organic Chlorinating agents, chlorine dioxide or ozone can be used. Ozone has a high decomposition rate, has a high sterilizing power, and can be sterilized in a short time. Chlorine is less sterilizing than ozone and requires a long time for sterilization. However, since the chlorine disinfectant has a longer sterilizing power than the ozone disinfectant, it is preferable to use liquid chlorine, sodium hypochlorite or calcium hypochlorite in the present invention. Regarding the concentration of the disinfectant solution, it is preferable to set the concentration of the disinfectant solution used according to the type of soiled sanitary products, the state of soiling, and the processing time.
001 6 ]
As described above, in the present invention, dirty sanitary ware heat disinfection and disinfection with a disinfectant are performed, so that E. coli adhering to the collected sanitary ware material can be made negative. Generally, the number of bacteria before sterilization of disposable medical products is, for example, 10 for raw cotton. ⁶ Thru 10 ⁷ / 1g, 10 cotton wool ² Thru 10 ^Four / G and 10 gauze ² Thru 10 ^Four However, in the present invention, at least the number of bacteria in the sanitary product material collected in the present invention can be less than or equal to the number of bacteria before sterilization of the exemplified disposable medical product. In the present invention, Escherichia coli is killed and formed into a body, and it is rarely left, so it is not a sanitary problem.
00 17 ]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following description and examples.
FIG. 1 is a process diagram showing an outline of a process for treating a dirty paper diaper according to an embodiment of the present invention. FIG. 2 is a schematic process diagram of the diaper rinsing process in the process of the paper diaper according to one embodiment of the present invention. FIG. 3 is a process diagram showing an outline of the processing steps of a dirty paper diaper according to another embodiment of the present invention different from the embodiment of FIG. Drawing 4 is an explanatory view showing the outline of a wet classification process about the processing product in the processing process of a paper diaper. In FIG. 1 to FIG.
00 18 ]
In this example, sodium hypochlorite is used as a disinfectant, and sodium hypochlorite is dissolved in water and used in a 0.2 wt% solution. The hot air dryer 1 for dirty paper diapers is provided with a dirty paper diaper supply port 3 on one side of the upper part 2 and an exhaust port 4 on the other side, and hot air is introduced on one side of the lower part 5. A port 6 is provided, and a dry matter discharge port 7 is provided on the other side. In this example, a plurality of stages of net conveyors 8 are provided inside the hot air dryer 1, and dirty paper diapers are introduced into the dryer 1 from the supply port 3 and transferred to the net conveyor 8. Then, it is heated to a temperature of 80 ° C. or higher with hot air and dried. While a part of the dried paper diaper is heated by hot air passing through the mesh of the net conveyor 8, the knot breaks and the solid excrement wrapped in the paper diaper falls out of the paper diaper, and the net conveyor Separated through the mesh.
00 19 ]
The dried product discharged from the bottom discharge port 7 of the dryer 1 is introduced into the sieving device 9 from the introduction path 10 of the sieving device 9 connected to the bottom discharge port 7. In this example, the sieving device 9 is provided with a vibration sieve 11 connected to vibration transmission means (not shown) of the forced vibration device, and the bottom part has a discharge port 12 and a sieve upper part. A discharge port 13 is provided. In this example, the dried paper diaper is introduced into the sieving device 9 and is forcibly subjected to vibration and impact while moving the vibrating screen 11, so that the knots in the paper diaper are still undissolved. The solid excrement wrapped in the paper diaper is separated through the sieve of the vibrating sieve 11. In this way, most of the solid excrement wrapped in the paper diaper is separated from the paper diaper and discharged from the discharge port 12 in the under-sieving portion. In this example, the discharge port 13 in the upper portion of the paper diaper sieving device 9 is connected to the crushing device 14, and the upper portion of the diaper sieving device 9 is connected to the crushing device 14 from the discharge port 13 in the upper portion of the diaper. And then crushed. In this example, the crushed material outlet 15 of the crushing device 14 is connected to a sieving device 16, and the crushed paper diaper crushed material is introduced into the sieving device 16 and divided according to particle size.
002 0 ]
In this example, the sieving device 16 has a sieve 17 with an opening of 30 mm in the uppermost stage, a sieve 18 with an opening of 10 mm in the lower stage, and an eye in the lowermost stage. A sieve 19 having an opening of 5 mm is arranged. In this example, among the crushed particles screened by the sieving device 16, the crushed particles 20 having a particle size of 30 mm or more on the sieve having a mesh size of 30 mm are fed from the top sieving outlet 21 to the crushing device 14. It is returned to and is crushed again. The crushed particles 22 having a particle size of 30 to 10 mm, which are sieved between the sieve 17 having a mesh size of 30 mm and the sieve 18 having a mesh size of 10 mm, are crushed material rich in plastic material compared to pulp material and water absorbent resin. Particles, introduced from a middle stage sieving outlet 23 into a classifier (not shown) connected to the middle stage sieving outlet 23, and crushed particles rich in plastic material, pulp material and water absorption It is divided into crushed material particles rich in functional resin. The crushed particles 24 having a particle size of 10 to 5 mm, which are sieved between a sieve 18 having a mesh size of 10 mm and a sieve 9 having a mesh size of 5 mm, are crushed richer in pulp material and water-absorbing resin than plastic materials. Crushed particles rich in pulp material and water-absorbing resin, introduced into a classifier 27 connected to an inlet 26 from the lowermost sieving outlet 25 to the lowermost sieving outlet 25; It is divided into crushed particles rich in plastic materials. The crushed particles 28 having a particle size of 5 mm or less sieved under the sieve 19 having a sieve mesh of 5 mm are crushed particles rich in solid excreta, and the bottom outlet 29 is connected to the bottom outlet 29 of the sieving device 16. The sludge is introduced into a sludge treatment apparatus (not shown) connected to the sewage and sludge treated.
002 1 ]
In this example, the crushed particles discharged from the intermediate stage outlet 23 and the lowermost stage outlet 25 are both sent to their respective classifiers, and are crushed particles rich in pulp material and water absorbent resin, and rich in plastic material. Classified into crushed particles. In FIG. 1, only the classifier 27 connected to the lowermost outlet 25 is shown, and the classifier connected to the intermediate outlet 23 has the same structure as the classifier 27, but is omitted in FIG. Not shown.
002 2 ]
In this example, the classifier 27 is a dry horizontal flow type air classifier, and the plastic material particles have a higher specific gravity and a higher settling speed than the pulp material particles and the water-absorbent resin particles. Since the particle dropping position is close to the introduction port 26, a first sorting chamber 29 for sorting the crushed particles 28 rich in plastic material is provided at a location close to the introduction port 26. The second sorting chamber 31 for sorting the crushed particles 30 rich in the pulp material and the water-absorbing resin 30 is provided at a location far from the center. By this classification treatment, the crushed particles 28 rich in plastic material classified and collected in the first sorting chamber 29, the crushed particles 30 rich in pulp material and water absorbent resin classified and collected in the second sorting chamber 31, In any case, for example, liquid excreta is attached in a dried state, so that the crushed particles 28 rich in the classified plastic material and the crushed particles 30 rich in the pulp material and the water absorbent resin are sent to the rinsing step 32. It is done.
002 3 ]
FIG. 2 shows a rinsing step 32. In this example, the initial rinsing solution can contain a disinfectant. As a disinfectant, sodium hypochlorite can be used. In this case, sodium hypochlorite is dissolved in water and used in a 0.2% by weight solution. A hopper 33 for supplying crushed particles of the dried and classified paper diaper material is provided above the belt conveyor device 34. The crushed particles of the disposable diaper material are supplied from the discharge side end 35 of the belt conveyor device 34 to the first rinsing washing tank 36 provided below the end as shown by an arrow 37. The first rinsing washing tank 36 is provided with a porous plate 38 at the bottom and a rinsing liquid supply pipe 39 at the side.
002 4 ]
In this example, a stirrer 40 for disturbing the rinsing liquid is provided below the perforated plate 38 at the bottom of the first rinsing washing tank 36, and a rinsing liquid discharge port 41 is provided. On the perforated plate 38 at the bottom of the first rinsing and washing tank 36, the first paper diaper material is scraped to move the crushed particles of the paper diaper material rinsed and washed from the perforated plate 38 toward the top of the first rinsing and washing tank 36. A device 42 is provided. A partition plate 43 is provided in the first rinsing / cleaning tank 36 of the present example above the first paper diaper material scraping device 42. In this example, the paper diaper material crushed particles washed in the first rinsing washing tank 36 are transferred to the second rinsing washing tank 44 and rinsed again. In this example, the second rinsing / cleaning tank 44 is formed in the same structure as the first rinsing / cleaning tank 36.
002 5 ]
Below the discharge side end 45 of the scraping device 42 of the first rinsing washing tank 36, a hopper 46 for supplying crushed particles of the washed paper diaper material to the second rinsing washing tank 44 is provided. Below the hopper 46, a belt conveyor device 47 for supplying crushed particles of a paper diaper material is provided. As shown by the arrow 49, the diaper material crushed particles rinsed and washed in the first rinsing washing tank 36 are passed from the discharge side end 48 of the belt conveyor device 47 to the second rinsing washing tank 44 provided therebelow. Supplied. Similar to the first rinsing / cleaning tank 36, the second rinsing / cleaning tank 44 is provided with a porous plate 50 at the bottom and a rinsing liquid supply pipe 51 at the side. In this example, a stirrer 52 for disturbing the rinsing liquid is provided below the perforated plate 50 at the bottom of the second rinsing washing tank 44, and a rinsing liquid discharge port 53 is provided. On the perforated plate 50 at the bottom of the second rinsing / cleaning tank 44, the second diaper material crushed material for moving the crushed paper diaper material crushed particles from the perforated plate 50 toward the upper portion of the second rinsing / cleaning tank 44 is moved. A particle scraping device 54 is provided. In the second rinsing / cleaning tank 44 of this example, a partition plate 55 is provided above the second paper diaper material crushed material particle collecting device 52 as in the first rinsing / cleaning tank 36. In this example, the disposable diaper material crushed particles washed in the second rinsing washing tank 44 are sent to the centrifugal dehydrator 56 and dehydrated.
002 6 ]
Below the discharge-side end 57 of the second paper diaper material crushed material particle collecting device 54 in the second rinsing and washing tank 44, the paper diaper material crushed material that supplies the rinsed and washed paper diaper material crushed material particles to the centrifugal dehydrator 56. A hopper 58 for supplying material particles is provided, and a belt conveyor device 59 for supplying crushed paper diaper material particles is provided below the hopper 58. The diaper material crushed particles that have been rinsed and washed in the second rinsing and washing tank 44 are indicated by arrows 62 from the discharge side end portion 60 of the belt conveyor device 57 to the supply port 61 of the centrifugal dewatering device 56 provided therebelow. Supplied as The separated waste water discharge pipe 63 is connected to the lower side portion of the centrifugal dehydrator 56, and the waste water separated by the centrifugal separation method is discharged from the discharge pipe 63.
00 27 ]
In addition, a conveyor device 64 is provided at the bottom of the centrifugal dewatering device 56 for transporting dewatered paper diaper material crushed particles. The transporting conveyor device 64 is connected to an inlet 66 of the blower drying device 65. The dehydrated paper diaper material crushed particles are sent to the blower drying device 65 by the conveying conveyor device 64 and dried. The dried diaper material crushed particles 67 are taken out from the dried product outlet 68.
00 28 ]
In this example, the rinsing liquid discharge pipes 69 and 70 are connected to the rinsing liquid discharge ports 41 and 53 of the first and second rinsing washing tanks 36 and 44, and are discharged from the rinsing liquid discharge ports 41 and 53. The rinsing waste liquid is discharged to the rinsing waste liquid discharge line 71 via the rinse liquid discharge lines 69 and 70, respectively. The rinsing waste liquid discharged to the rinsing waste liquid discharge pipe 71 contains filth and the like separated from the dirty paper diaper. In order to separate these dirt, the rinsing waste liquid is sent to the inclined vibrating screen device 72. Thus, for example, a solid substance having a particle size of 0.5 mm or more is separated by the vibrating sieve 73 having a sieve opening of 0.5 mm. The separated solid matter having a particle size of 0.5 mm or more is sent to the centrifugal dehydrator 75 by the vertical conveyor 74 and dehydrated. The dehydrated solid matter having a particle size of 0.5 mm or more is sent from the centrifugal dewatering device 75 to the blower drying device 77 by the belt conveyor device 76 and dried. The dried solid matter having a particle size of 0.5 mm or more mainly containing pulp material and water-absorbing resin is recovered as recycled paper diaper material crushed particles from the outlet 78 of the blower dryer 77.
00 29 ]
In this example, when the rinsing liquid contains a disinfectant, the rinsing waste liquid containing the filth from which the solid matter having a particle size of 0.5 mm or more has been separated by the vibrating sieve 73 is passed from the rinsing waste liquid line 79 to the settling tank 80. The waste liquid which has been sent and allowed to stand for a certain period of time to reduce its disinfecting action and whose disinfecting action has decreased is discharged from the pipe 81 to the activated carbon adsorbing device 82 to adsorb and remove the disinfectant. The waste liquid from which the disinfectant has been removed is sent from the pipe 83 to the activated sludge treatment device 84, treated and purified by the activated sludge method, and the purified treated water 85 is discharged.
003 0 ]
In this example, the rinsing waste liquid pipe 87 from the discharge pipe 86 of the centrifugal dehydrator 75 and the rinse waste liquid pipe 88 from the discharge pipe 63 of the centrifugal dehydrator 56 are 0.5 mm or less from the vibration sieve device 72. The rinse liquid waste liquid from which the solid matter having a particle size of 0.5 mm or less from the discharge pipe 79 is separated and removed is connected to the discharge pipe 79 of the rinse liquid waste liquid from which the solids of the particle size are separated and removed. The waste water pipes 87 from the discharge pipes 63 and 86 of the dehydrators 56 and 75 are merged, sent to the activated carbon treatment tank, treated with activated carbon, and then sent to the activated sludge treatment tank to be treated with activated sludge. . In this example, when the rinsing liquid waste liquid or the disinfectant is not contained, the activated sludge can be sent to the activated sludge treatment tank without being subjected to the activated carbon treatment.
003 1 ]
In this example, the blower dryers 65 and 77 are dried with hot air having a temperature of 100 to 120 ° C., for example. From the blower dryer 65, the recovered crushed material rich in plastic material is carried out by the carry-out conveyor device 67, and from the blower dryer 77, the collected fluff with a particle size of 0.5 mm or less is collected. Tsu The pulp is carried out by the carry-out conveyor device 78. In this example, the blast dryers 1, 65 and 77 all dry waste paper diaper material or crushed paper diaper material particles with high-temperature hot air, so that the resulting dried product is sterilized with hot air, Is.
003 2 ]
In this example, the device denoted by reference numeral 82 is an activated carbon adsorption device, and the device denoted by reference numeral 84 is an activated sludge treatment device. However, both the devices denoted by reference numerals 82 and 84 may be activated carbon adsorption devices. In addition, both the devices 82 and 84 can be activated sludge treatment devices. In addition, if the sewage path containing the disinfectant and the sewage path having a low disinfectant content are formed separately, the sewage path having a low disinfectant content is more On the road In comparison, since the disinfecting power is reduced, a mixing tank may be provided separately and water containing the disinfectant may be mixed.
003 3 ]
Compared with the embodiment shown in FIG. 1, the embodiment shown in FIG. 3 is used to remove the discarded paper diaper between the dryer 1 and the sieving device 9 and scrape the solid excreta adhering to the nonwoven fabric. The difference is that a scraping device for dropping is provided and a wet classifier is connected to the dry classifier, and the other points are substantially the same.
003 4 ]
Also in this example, as in the embodiment of FIG. 1, the hot air dryer 1 is provided with a plurality of stages of net conveyors 8, and dirty paper diapers are introduced into the dryer 1 from the supply port 3. While being transported through the net conveyor 8, it is heated to a temperature of 80 ° C. or higher by hot air and dried. While a part of the dried paper diaper is heated by hot air passing through the mesh of the net conveyor 8, the knot is broken and the solid excrement wrapped in the paper diaper is separated from the paper diaper and separated. They are separated through the mesh of the conveyor 8.
003 5 ]
From the bottom part discharge port 7 of the dryer 1, the dried material of a paper diaper is discharged | emitted with a solid excrement. The solid excrement discharged from the bottom discharge port 7 of the dryer 1 and the dried material of the paper diaper are discharged from the introduction pipe line 90 of the paper diaper opening device 89 connected to the bottom discharge port 7 of the dryer. To be introduced. In this example, the paper diaper opening device 89 is provided with a paper diaper scraping device 94 including a cylindrical member 91, a paper diaper scraping bar member 92, and a cylindrical net member 93. The cylindrical member is rotatably provided in the disposable diaper opening device 89 by a rotation device (none of which is shown). Inside the cylindrical member 91, a paper diaper scratching bar member 92 having a round end is erected so as to scratch both ends of the paper diaper without breaking the paper diaper. In this example, a cylindrical mesh member 93 having a mesh size of 10 mm is stretched inside the cylindrical member so as to separate solid excrement separated from the disposable diaper and scratch only the disposable diaper. Has been. In this example, the dried paper diaper is connected to the bottom discharge port 7 of the dryer and the introduction pipe line 90 of the opening device 89 of the paper diaper that has a lower end forming a tapered chute at the upper end. It is introduced into a paper diaper scraping device 94. The dried and used dirty paper diaper introduced into the paper diaper scraping device 94 is forcibly scratched by the scraping bar member 92 while being conveyed while rolling in the cylindrical net member 93. The paper diaper which is unwound or unknotted is separated from the paper diaper when the surface is scratched, the solid excrement wrapped or attached to the paper diaper is peeled off and separated from the paper diaper. It is discharged from the scratching device 94. In this example, solid excrement is separated and the paper diaper discharged from the paper diaper scraping device 94 is discharged together with the solid excrement under the net of the cylindrical net member 93 and the discharge port of the paper diaper opening device 89. The sieving device 9 is introduced into the sieving device 9 from the introduction pipe 10 of the sieving device 9 connected to 95.
003 6 ]
In this example, similarly to the embodiment shown in FIG. 1, the sieving device 9 is provided with a vibration sieve 11 connected to vibration transmission means (not shown) of the forced vibration device, and a sieve is provided at the bottom. A lower portion discharge port 12 and a sieve upper portion discharge port 13 are provided. In this example, the dried paper diaper with the knots and connection parts unwound is introduced into the sieving device 9 in an open state, and is forcibly subjected to vibration and impact while moving the vibration sieve 11. Then, the solid excrement wrapped in the paper diaper is separated through the sieve of the vibrating sieve 11. In this way, most of the solid excrement wrapped in the paper diaper is detached from the paper diaper and discharged from the discharge pipe 12 in the under-sieving portion. In this example, the discharge port 13 in the upper portion of the paper diaper sieving device 9 is connected to the crushing device 14, and the upper portion of the diaper sieving device 9 is connected to the crushing device 14 from the discharge port 13 in the upper portion of the diaper. And then crushed. In this example, the crushed material outlet 15 of the crushing device 14 is connected to a sieving device 16, and the crushed paper diaper crushed material is introduced into the sieving device 16 and divided according to particle size.
00 37 ]
In this example, the sieving device 16 has a sieve 17 with an opening of 30 mm in the uppermost stage, a sieve 18 with an opening of 10 mm in the lower stage, and an eye in the lowermost stage. A sieve 19 having an opening of 5 mm is arranged. In this example, among the crushed particles screened by the sieving device 16, the crushed particles 20 having a particle size of 30 mm or more on the sieve having a sieve screen of 30 mm are fed from the uppermost sieving outlet 21 to the crushed device. 14 is returned to the crushing process again. The crushed particles 22 having a particle size of 20 to 10 mm, which are sieved between the sieve 17 having a mesh size of 30 mm and the sieve 18 having a mesh size of 10 mm, are crushed material rich in plastic material compared to pulp material and water absorbent resin. Particles, introduced from a middle stage sieving outlet 23 into a classifier (not shown) connected to the middle stage sieving outlet 23, and crushed particles rich in plastic material, pulp material and water absorption It is divided into crushed material particles rich in functional resin. The crushed particles 24 having a particle size of 10 to 5 mm, which are sieved between a sieve 18 having a mesh size of 10 mm and a sieve 9 having a mesh size of 5 mm, are crushed richer in pulp material and water-absorbing resin than plastic materials. Crushed particles rich in pulp material and water-absorbing resin, introduced into a classifier 27 connected to an inlet 26 from the lowermost sieving outlet 25 to the lowermost sieving outlet 25; It is divided into crushed particles rich in plastic materials. The crushed particles 28 having a particle size of 5 mm or less sieved under the sieve 19 having a sieve mesh of 5 mm are crushed particles rich in solid excreta, and the bottom outlet 29 is connected to the bottom outlet 29 of the sieving device 16. The sludge is introduced into a sludge treatment apparatus (not shown) connected to the sewage and sludge treated.
00 38 ]
Also in this example, as in the embodiment of FIG. 1, the crushed particles discharged from the intermediate stage outlet 23 and the lowermost stage outlet 25 are all sent to the respective classifiers to be used as pulp material and water absorbent resin. Classification into rich crushed particles and crushed particles rich in plastic materials. Also in FIG. 3 of this example, only the classification device 27 connected to the lowermost stage outlet 25 is shown, and the classification device connected to the intermediate stage outlet 23 has the same structure as the classification device 27, but in FIG. Are also omitted and not shown.
00 39 ]
In this example, the classifier 27 is a dry horizontal flow type air classifier, and the plastic material particles have a higher specific gravity and a higher settling speed than the pulp material particles and the water-absorbent resin particles. Since the particle drop position is close to the introduction port 26, a first sorting chamber 29 for sorting the crushed particles 28 rich in plastic material is provided in a place near the introduction port 26. In this example, since the water-absorbing resin absorbs water and has a large specific gravity, the second sorting chamber 97 for sorting the crushed particles 96 rich in the water-absorbing resin at a location close to the inlet 26 next to the plastic material. And separate it from the pulp material. Since the pulverized material particles 98 rich in pulp material have a relatively small specific gravity, a third sorting chamber 99 for sorting the crushed material particles 98 rich in pulp material is provided at a place where the dropping point is farthest from the inlet 26. Also in this example, by this classification process, the crushed particles 28 rich in plastic material classified in the first sorting chamber 29, the crushed particles 96 rich in water-absorbing resin classified in the second sorting chamber 97, and any of them are, for example, Since liquid excreta is attached in a dry state, the crushed particles 28 rich in plastic material classified in the first sorting chamber and the crushed particles rich in water-absorbing resin classified in the second sorting chamber 97 98 and the crushed particles 30 rich in pulp material classified into the third sorting chamber 99 are sent to the wet classifier 100, respectively.
004 0 ]
In this example, a cyclone type separator was used as the wet classifier 100. In the wet classifier 100, an overflow portion 102 is formed around the upper end of the inverted conical main body 101, and particles having a small specific gravity are sorted, and particles having a high specific gravity are sorted at the lower end of the main body 101. A sedimentation portion 103 is formed. The crushed particles 99 rich in the classified plastic material are suspended in water and supplied from the mixing device 105 through the supply pipe 106 into the supply guide pipe 104 in the upper central portion, and are centrifuged by the upward flow. It is separated into each material by action. The mixing device 105 is provided with an inlet 107 for the crushed particles 99 rich in the plastic material classified at the upper part, and a water supply pipe 108 is connected to one of them. The crushed particles 99 rich in the classified plastic material are supplied to the mixing device 105 from the introduction port 107 and are mixed with the water 109 introduced from the water supply pipe 108 in the mixing device 105 to be suspended. A liquid mixture is formed, introduced into the main body through the supply pipe 106, and classified. Suspended water 110 mainly containing pulp material flows out from the upper end overflow port 102 of the cyclone main body 101, and suspended water 111 mainly containing water-absorbing resin flows from the outlet 103 at the lower end of the cyclone main body 101 to the valve 112. Open and discharged.
004 1 ]
The crushed particles rich in the classified pulp material are separated from the pulverized particles richer in the pulp material by the wet classification, the plastic material and the solid excrement are separated, and washed with water to obtain a clean pulp material. can get. According to this example, an appropriate wet classifier can be selected according to the particle size, separation with high separation accuracy can be performed, and solid excrement and other excrement can be separated.
The crushed particles rich in plastic material obtained in this example can be formed into pellets and used for gardening articles such as cat sand, solid fuel or piles, flower pots, etc., as in the embodiment of FIG. Placed between and molded into a sheet, or as a sheet, or between a plastic film and a non-woven fabric made of plastic material, the molded sheet is placed into a sheet and molded into a sheet, for example, a water absorbent sheet, a pet Sheets, plywood, cushioning materials, roofing sheets, waste sheets, building sheets, pallet materials, and oil absorbing sheets can be used. The crushed particles rich in classified pulp material can be, for example, water-absorbing sheets, pet sheets, wastes, oil-absorbing sheets, toilet paper, and toilet seat sheets, as in the embodiment of FIG. Can be used for soil and water retention for agriculture and horticulture, and for cultivation soil for seedling and horticulture, and the material rich in high water-absorbent resin is placed between water-absorbent paper and formed into a sheet. And it can be used as a water-absorbing sheet for raising seedlings.
004 2 ]
Example 1
The used paper diaper was dried in a hot air dryer. 72 g of disposable diapers before use was 353 g after use and 151 g after drying. 1000 sheets of dried paper diapers (approx. 150 kg) after use are boiled in a rotary scraper, spread the paper diapers after use, and screened with a 30 mm mesh vibrating screen while removing the wrapped solid excrement. It was. The portion on the sieve was pulverized to a particle size of 10 mm by a coarse pulverizer. The pulverized product was sieved with a vibration sieve having a mesh size of 5 mm. This sieved portion is classified by an air classifier, and (1) crushed particles rich in plastic materials (so-called polycas: mainly containing polypropylene resin, polyethylene resin and polyethylene terephthalate resin, and in addition to these, powdered pulp It was divided into fluff pulp of powdered pulp material containing high water-absorbing resin as a contaminating component (containing fluff, high water-absorbing resin and water-absorbing paper). These were each separately wet-classified, divided into raw fluff pulp, superabsorbent resin and polycus, and each was dried to a moisture content of 10% by weight or less. Cat sand was produced using the recovered dried material. There was no problem and there was no hindrance to use as cat sand.
Example 2
004 3 ]
Production of cat sand using recovered materials
In the core part, 77 parts by weight of recovered crushed polycus particles with a particle size of 3 mm or less and 3 parts by weight of recovered superabsorbent resin are mixed, and a disk pelleter made by Fuji Powder Co., Ltd. is used. Then, extrusion granulation was performed with a die hole diameter of 4 mm. Water is sprayed on the surface of the obtained granulated material, the coating material mixture is sprayed on the surface of the granulated material, the coating material mixture is adhered to the surface of the granulated material, and the moisture content is then reduced by a dryer. It dried until it became 10 weight% or less, and formed the coating layer of the coating material mixture on the granulated surface. The dried coated granular material is sieved by a circular sieving apparatus in which a circular sieve having an opening of 10 mm is arranged in the upper stage and a circular sieve having an opening of 4 mm is arranged in the lower stage, and the coated granules having a particle size on a 10 mm sieve. The coated granule having a particle size of 4 mm under the sieve was removed to adjust the product particle size of the coated granule. This coated granular material had no problem with odor, had no hindrance in indoor use, and cats could be used without problems as cat sand.
In this example, the coating material mixture is composed of 12 parts by weight of the recovered fluff pulp particles having a particle size of 3 mm or less, 3 parts by weight of the recovered superabsorbent resin having a particle size of 30 μm or less, and 30 μm or less. A superabsorbent resin (Himosub 1100: trade name, manufactured by Himosub Co., Ltd.) was mixed to 5 parts by weight.
004 4 ]
Example 3
The used paper diaper was dried in a hot air dryer. 72 g of disposable diapers before use was 349 g after use and 146 g after drying. 1000 sheets of dried paper diapers (about 145kg) after use are boiled in a rotary scraper, spread the paper diapers after use, and screened with a 30mm mesh vibrating sieve while removing the wrapped solid excrement It was. The portion on the sieve was pulverized to a particle size of 10 mm by a coarse pulverizer. The pulverized product was sieved with a vibration sieve having a mesh size of 5 mm. This sieved portion is classified by an air classifier, and (1) crushed particles rich in plastic materials (so-called polycas: mainly containing polypropylene resin, polyethylene resin and polyethylene terephthalate resin, and in addition to these, powdered pulp It was divided into fluff pulp of powdered pulp material containing high water-absorbing resin as a contaminating component (containing fluff, high water-absorbing resin and water-absorbing paper). These were each separately wet-classified, divided into raw fluff pulp, superabsorbent resin and polycus, and each was dried to a moisture content of 10% by weight or less. The recovered dry material was used to produce animal sheets, with regard to water absorption capacity and odor. There was no problem and there was no hindrance to use as a pet sheet.
004 5 ]
Example 4
Manufacture of animal sheets
Absorbent paper 16g / m ² In order to form a water absorbing layer, a mixture of 20 g of recovered fluff pulp crushed particles having a particle size of 3 mm or less and 3 g of the recovered superabsorbent resin is disposed thereon. Color paper 16g / m ² And was integrally molded by pressure to form an absorbent body. This absorber is placed on a polyethylene film with a thickness of 20 μm on a width of 300 mm and a length of 450 mm, and a polypropylene film with a width of 300 mm and a length of 450 mm is placed on the absorber, and the periphery of the polyethylene film and the polypropylene film is melt-melted. By bonding, a sheet of animal sheets, ie, a pet sheet, 300 mm wide and 450 mm long was manufactured.
This animal sheet had no problem with odor, had no problem for indoor use, and was tested for use in dogs.
004 6 ]
【The invention's effect】
In the present invention, the sanitary article to which dirt is attached is heated to a temperature of 80 ° C. or more, and the sanitary article to which the dirt is attached is dried to facilitate separation of the dirt. The sanitary product is sieved under forced vibration, a part of the dried soil is separated from the sanitary product, the material is disinfected from the sanitary product to which the soil adheres, and the product is cleaned and cleaned. The sanitary goods are collected and used effectively, and dirty sanitary goods that have been disposed of in the past can be effectively used as raw materials for sanitary goods, horticulture and agricultural supplies. In addition, conventionally, it is possible to reduce costs by exclusively utilizing costs required for disposal for the production of effective raw materials, and it is possible to effectively use resources and avoid waste of resources as much as possible.
Moreover, the present invention hygienically collects a huge amount of used sanitary articles such as used diapers, and the amount of processing is enormous, enabling the creation of new industries and contributing greatly to society. To do.
[Brief description of the drawings]
FIG. 1 is a process diagram showing an outline of a process for treating a dirty paper diaper according to an embodiment of the present invention.
FIG. 2 is a schematic process diagram of a diaper rinsing process of a paper diaper according to an embodiment of the present invention.
FIG. 3 is a process diagram showing an outline of a processing process of a dirty paper diaper according to another embodiment of the present invention different from the embodiment of FIG. 1;
FIG. 4 is an explanatory view showing an outline of a wet classification process for a processed product in a process process of a disposable diaper.
[Explanation of symbols]
1 Hot air dryer
2 Upper part of hot air dryer 1
3 Supply port of hot air dryer 1
4 Exhaust port of hot air dryer 1
5 Lower part of hot air dryer 1
6 Hot air inlet of hot air dryer 1
7 Dry matter outlet of hot air dryer 1
8 Net conveyor
9 Screening device
10 Introduction path of sieving device 9
11 Vibrating sieve of sieving device 9
12 Under-sieving outlet of sieving device 9
13 Upper outlet of sieving device 9
14 Crusher
15 Crushing material outlet of crushing device 14
16 Screening device
17 Screening device 16 has a screen opening of 30 mm
18 Sieve with sieve opening of sieving device 16 of 10 mm
19 Sieve with sieve opening of sieving device 16 of 5 mm
20 Crushed material particles having a particle size of 30 mm or more of the sieving device 16
21 Uppermost sieving outlet of sieving device 16
22 Crushed material particles having a particle size of 30 to 10 mm in the sieving device 16
23 Middle screen sieving outlet of sieving device 16
24 Crushed material particles having a particle size of 10 to 5 mm or more in the sieving device 16
25 Sieving outlet at the bottom of the sieving device 16
26 Inlet 27 of classification device 27 Classification device
28 Crushed particles rich in plastic materials
29 First sorting chamber for sorting crushed particles 28 rich in plastic materials
30 Crushed particles rich in pulp material
31 Second sorting chamber for sorting crushed particles 30 rich in pulp material
32 Rinsing process
33 Supply hopper
34, 47 and 59 belt conveyor equipment
35 Discharge end of belt conveyor 34
36 First rinse bath
37 and 49 arrows
38 and 50 perforated plates
39 and 51 Rinsing liquid supplier
40 and 52 agitators
41 and 53 Rinsing fluid outlet
42 First paper diaper material crushed material particle scraping device
43 and 55 divider
44 Second rinse bath
45 Discharge end
46 Hopper for supplying crushed material particles to the second rinsing washing tank 44
48 Discharge end
54 Second paper diaper material crushed material particle scraping device
56 and 75 Centrifugal dehydrator
57 Discharge side end of second paper diaper material crushed material particle scraping device 54
58 Centrifugal dewatering device 56 hopper for supplying crushed material particles of disposable diapers
60 Discharge end of belt conveyor device 59
61 Supply port of centrifugal dewatering device 56
62 Arrow
63 Separated wastewater discharge pipe
64 Belt conveyor device for transporting dehydrated paper diaper material crushed particles
65 Blower dryer
66 Entrance of the blower drying device 65
67 Dried paper diaper material crushed particles
68 Dried product outlet of the blower dryer 65
69 and 70 Rinsing fluid discharge line
71 Rinsing waste liquid discharge line
72 Vibrating sieve device
73 0.5mm vibrating sieve
74 Vertical conveyor equipment
76 Belt conveyor equipment
77 Air dryer 78
79 Rinsing waste line
80 Settling tank
81 and 83 pipelines
82 Activated carbon adsorption device
84 Activated sludge treatment equipment
85 treated water
86 Discharge pipe of centrifugal dehydrator 75
87 and 87 rinse waste pipe
89 Paper diaper opening device
90 Introduction path to paper diaper opening device 89
91 Cylindrical member
92 Paper diaper scraper members
93 Cylindrical mesh member
94 Paper diaper scratching device
95 Discharge port of paper diaper scratching device 94
96 Crushed particles rich in water-absorbing resin
97 Second sorting chamber for sorting crushed particles 96 rich in water-absorbing resin
98 Crushed particles rich in pulp material
99 Third sorting chamber for sorting pulverized particles 98 rich in pulp material
100 Wet classifier
101 Body part of inverted conical part of wet classifier 100
102 Overflow part of wet classifier 100
103 Settling part of wet classifier 100
104 Guide tube at the upper center of the wet classifier 100
105 Mixing device
106 Supply pipe
107 Inlet of mixing device 105
108 Water supply pipe
109 water
110 Suspended water mainly containing pulp material
111 Suspended water mainly containing water-absorbing resin
112 Valve

Claims (9)

  The sanitary product with dirt was heated to a temperature of 80 ° C. or higher, the sanitary product with dirt was dried, and the dried sanitary product was sieved under forced vibration and dried. Part of the soil is separated from the sanitary product, the sanitary product from which the part of the soil is separated is roughly crushed, the crushed material is sieved, a part rich in plastic material, a part rich in pulp material, and powdery A method for recovering a raw material from a sanitary article to which dirt is attached, characterized in that each part is separated and a part rich in pulp material is separated by dry classification.   The hygienic article with dirt is blown and heated to a temperature of 80 ° C. or higher on a mesh with an opening of 30 mm or more, the hygienic article with dirt attached is dried, Sieving with a sieve with an aperture of 30 mm or more under forced vibration, separating a part of the dried dirt from the sanitary goods, and crushing the sanitary goods from which part of the dirt has been separated to a particle size of 20 mm or more The coarsely crushed material is sieved with a first sieve having an opening of 20 to 30 mm, and the lower sieve part of the first sieve is then sieved with a second sieve having an opening of 10 to 20 mm, The lower sieve portion of the second sieve is further sieved with a third sieve having an opening of 5 to 10 mm, and the particle size portion on the second sieve and the pulp material is rich under the first sieve rich in plastic material. The third sub-sieving grain including the particle size part and the powdery part on the third sieve under the second sieve Parts were respectively separated, particle size portion and the material collection methods from hygiene articles dirt characterized adhered to be separated by separately dry classification particle size portion respectively rich in pulp material enriched in the plastic material.   The hygienic article with dirt is blown and heated to a temperature of 80 ° C. or higher on a mesh with an opening of 30 mm or more, the hygienic article with dirt attached is dried, Sieving with a sieve with an aperture of 30 mm or more under forced vibration to separate a part of the dried dirt from the sanitary article, and crush the sanitary article from which part of the dirt has been separated to a particle size of 30 mm or less The coarsely crushed material is sieved with a first sieve having an opening of 20 to 30 mm, and the lower sieve part of the first sieve is sieved with a second sieve having an opening of 10 to 20 mm. The lower sieve portion of the second sieve is sieved with a third sieve having an opening of 5 to 10 mm, the second sieve rich in pulp material and the particle size portion on the second sieve under the first sieve rich in plastic material The particle size portion of the third sieve including the particle size portion and the powdery portion on the third sieve is respectively And then suspending the particle size part under the third sieve including the powdery part in a disinfectant solution, and filtering this suspension with a filter medium having a pore opening of 1 mm or less to obtain a sanitary product. Part of the attached dirt is separated from the powdery part, and the filtration residue is dispersed in hot water to form a hot water suspension containing the pulverized material of the sanitary product. The suspended liquid is filtered with a filter medium having a pore opening of 1 mm or less to separate a part of the remaining dirt adhering to the sanitary product from the pulverized product of the sanitary product, and suspended in hot water. The liquid filtration residue is subjected to particle size separation by spraying a substance solution having a bactericidal action with a sieve having a sieve opening of 5 to 10 mm, and a sieving part mainly containing a pulp material and a water-absorbing resin, and a plastic substance And the pulp material and the water-absorbent resin The sieved portion contained is dried, and the resulting dried product is dry-classified to separate into a classified product having a large pulp material content and a classified product having a pulp material content less than the classified product. A method for recovering the material from the sanitary goods to which dirt is attached. The dried hygiene articles, and the scratched treatment, adhesion dirt according to any one of claims 1 to 3, wherein the sieving by sieve under forced vibration by solving the connection portion of the sanitary article How to recover the material from sanitary goods Hygiene articles dry soils are attached is the material from hygiene articles stain according to any one of claims 1 to 3, characterized in that water content of 10 wt% or less is attached Collection method. The soil according to any one of claims 1 to 3 , wherein the soiled sanitary product is a soiled paper diaper, a soiled milk pad or a soiled urine pad, or two or more soiled sanitary products. How to recover the material from the attached sanitary goods. Disinfectants, ozone, chlorine, sodium hypochlorite, calcium hypochlorite, lithium hypochlorite, chlorine dioxide, chlorinated isocyanuric acid, claim 3, characterized in that the chloramine B or chloramine T A method for recovering the material from the sanitary product to which the dirt according to any one of the above items is attached. Hygiene articles dirt is adhered, the used paper diaper, any of claims 1 to 3 used milk pad or used urine pad also characterized in that it is a hygiene of these two or more spent A method for recovering the material from the sanitary article to which the dirt according to claim 1 is attached. The dirt according to any one of claims 1 to 3 , wherein dead materials of Escherichia coli are attached to a sanitary article material collected from a sanitary article to which dirt is attached. How to recover that material from sanitary goods.

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