JP2023046633A - Used sanitary article disposal system and disposal method - Google Patents

Abstract

To provide a used sanitary article disposal system and disposal method that can recover raw materials constituting a used sanitary article as recycle source, and can reduce an amount of micro plastics contained in a residue after processing for final emission thereof into natural world as much as possible.SOLUTION: A used sanitary article disposal system 15 comprises: a processing part 18 including a separator 16 which disposes of multiple kinds of components 2, 3, 4, 5, 6 forming a used sanitary article as they are without crushing or breaking the used sanitary article with a decomposition treatment liquid, and a sorter 17 which sorts the multiple kinds of components 2, 3, 4, 5, 6 that have been decomposed by the separator 16 and dehydrated; and a recycled resources recovery/reuse part 19 which recovers recycled resources from the decomposition treatment liquid in which the multiple kinds of components 2, 3, 4, 5, 6 decomposed by the separator 16 are mixed, and reuses the recovered recycled resources.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a used sanitary product processing system and method for processing used sanitary products, recovering recycled resources from the used sanitary products, and reusing the recovered recycled resources.

In recent years, the use of disposable diapers has increased due to the aging population, and when discarded after use, most of them are incinerated at municipal cleaning facilities or the like. Disposal of used paper diapers at cleaning facilities or the like causes problems such as soaring waste disposal costs, an increase in carbon dioxide emissions, an increase in the amount of combustion improver used, and a shortage of final disposal sites.

Disposable diapers are made from high-quality pulp, plastic, and high-molecular-weight absorbent materials. Since the polymer absorbent material absorbs a large amount of water, conventional recycling of paper diapers involves processing the water containing various bacteria, etc., which absorbs a large amount of water. made no progress. Moreover, according to a certain paper diaper manufacturer, 50% or more of the material composition ratio of paper diapers is made of plastic.

However, in recent years, businesses that recycle disposable diapers have begun to appear, and the Ministry of the Environment formulated guidelines in March 2020 for local governments that are considering introducing recycling of used disposable diapers. On the other hand, since used paper diapers are collected in plastic bags, a crushing step is essential in the recycling process, as described in Patent Document 1. In addition, in the plan for receiving used disposable diapers in the sewage system promoted by the Ministry of Land, Infrastructure, Transport and Tourism, it is a mechanism to dispose of them in a sewage treatment plant after being crushed. When used disposable diapers are crushed in the recycling process, the plastic is also crushed, generating microplastics of 5 mm or less.

According to data on microplastics, it is said that 1 billion microplastics per day (390 billion per year) are released from sewage treatment plants (basin population of 500,000). ) itself is 0.1 mm in size, it is presumed that crushing, breaking, processing, and recycling disposable diapers increases the outflow of microplastics.

JP 2020-146632 A

Approximately 300 million tons of petroleum-based plastics are produced annually worldwide, but plastics are characterized by their ability to remain semi-permanently without being naturally decomposed. is called. As a result, there are concerns about the possible damage to the marine environment, including the ecosystem, and the impact on the coastal living environment. In particular, disposable diapers have a very small polymer absorbent material (polymer), and if they are crushed further, they may become even smaller, and there is a growing concern that they will flow into the ocean.

According to data, it would take 450 years for disposable diapers to decompose if thrown into the ocean. With the establishment of SDGs and the promotion of the international plastic resource environment, Vanuatu has come up with a policy of banning the use of disposable diapers. If the use of disposable diapers is curtailed internationally, a different burden will arise for countries that are entering an aging society. In other words, paper diapers are indispensable for nursing care of the elderly, and cloth diapers are frequently changed, causing problems such as odor.

Therefore, in the present invention, when disposing of used sanitary goods such as used disposable diapers, the materials constituting the used sanitary goods can be recovered as recycled resources and must be finally released into the natural world. It is an object of the present invention to provide a system and a method for treating used sanitary products that can reduce the amount of microplastics contained in residues after treatment as much as possible.

In order to solve the above-described problems and achieve the object, a first aspect of the present invention is a processing system for processing used sanitary goods, which is used sanitary goods without crushing or breaking the used sanitary goods. a processing unit comprising a separator for processing a plurality of types of members forming an article as they are with a decomposition treatment liquid; and a recycle resource recovery/reuse unit for recovering recycle resources from a decomposition treatment liquid in which a plurality of types of members are mixed after being decomposed by a machine, and reusing the recovered recycle resources.

In a second aspect of the present invention, the recycle resource recovery/reuse unit recovers at least pulp as a recycle resource from the treated wastewater in which a plurality of types of members are mixed and decomposed by the separator, and the sorter and a resource recycling unit that manufactures cardboard materials, fertilizers, biomass fuels, and solid fuels from the recycled resources collected from the resource recovery unit. .

In a third aspect of the present invention, the resource recovery unit recovers pulp as a recyclable resource from the wastewater containing a mixture of multiple types of members decomposed into multiple types of members without being crushed or broken by a separator. a first pulp recovery device that recovers at least; a liquid fertilizer production device that recovers from the separator a treated waste liquid in which a plurality of types of members forming the used sanitary goods are mixed; and a solid component contained in the treated waste liquid It is characterized by having a scummer recovery device for recovering a certain scummer, a second pulp recovery device for recovering the pulp sorted by the sorter, and a plastic pulp recovery unit for recovering the plastic with the pulp attached.

In a fourth aspect of the present invention, the resource recycling unit comprises a corrugated board raw material manufacturing device for manufacturing corrugated board raw materials from the pulp recovered by the first pulp recovery device, and processing waste liquid discharged from the separator. A liquid fertilizer manufacturing device for manufacturing liquid fertilizer, a fertilizer manufacturing device for manufacturing fertilizer from the scummer collected by the scummer collecting device, a biomass fuel manufacturing device for manufacturing biomass fuel from the scummer collected by the scummer collecting device, A methane gas fermentation device that generates methane gas from the fermentation raw material recovered by the fermentation raw material recovery unit from the treated waste liquid discharged from the separator, and a solid fuel production device that produces solid fuel from the plastic pulp recovered from the plastic pulp recovery unit. characterized by comprising

A fifth aspect of the present invention is characterized in that the decomposition treatment liquid comprises a disinfectant/disinfectant, lime, and water.

A sixth aspect of the present invention is a processing method for processing used sanitary products, in which a plurality of types of members forming used sanitary products are treated as they are with a decomposition treatment liquid without crushing or breaking the used sanitary products. Decomposing and processing in a processing unit equipped with a sorter for sorting out a plurality of types of members decomposed and dehydrated by the decomposition processing liquid, and the plurality of types of members decomposed and sorted in the processing unit and waste liquid. Recycled resources are recovered from waste by a resource recovery section, and the recycled resources recovered by the resource recovery section, such as waste liquid, pulp, scummer, and plastic, are reused in products by the resource reuse section.

A seventh aspect of the present invention is a processing method for processing used sanitary products, in which the used sanitary products are disassembled in a processing unit as they are into a plurality of types of members forming the used sanitary products without crushing or breaking the used sanitary products. The treatment liquid is decomposed by a separator, the plurality of types of members mixed with the decomposition treatment liquid are dehydrated by the separator, and the plurality of types of members that are solids after dehydration are sorted by a sorter in the processing unit. Then, after dehydrating the decomposed used sanitary goods, the first pulp, scummer, and fermentation raw material are recovered by the resource recovery unit from the waste liquid discharged from the separator, and the first pulp recovered by the resource recovery unit Pulp, scummer, and fermented raw materials are processed in the resource recycling department to produce cardboard raw materials from the first pulp, to produce fertilizer and biomass fuel from the scummer, to produce methane gas from the fermented raw materials, and to be discharged from the separator. Liquid fertilizer is produced from the collected wastewater, decomposed and dehydrated by the separator, and then the second pulp and plastic pulp are recovered by the resource recovery section from the multiple types of members sorted by the sorter, and then recovered by the resource recovery section. The second pulp and plastic pulp are used in a resource recycling section to produce corrugated board materials from the second pulp and to produce solid fuel from the plastic pulp.

According to the present invention, each of the plurality of types of members forming the used sanitary article is treated with the decomposition liquid in the separator without crushing or breaking the used sanitary article, and the decomposition liquid in which the plurality of types of members are mixed. Recycled resources are collected and reused by the Recycled Resources Collection and Reuse Department.

Therefore, the materials that make up the used sanitary products can be recovered as recyclable resources, and the used sanitary products are not crushed or broken. The amount of microplastics contained in can be reduced as much as possible.

1 is a block diagram showing a processing system for used sanitary products according to an embodiment of the present invention; FIG. FIG. 2 is a cross-sectional view showing a paper diaper processed by the used sanitary product processing system according to the embodiment of the present invention.

Hereinafter, a processing system and processing method for used sanitary products according to an embodiment of the present invention will be described. As a sanitary product in the present embodiment, a known commercially available paper diaper is used. There are various types of disposable diapers, such as a pants type, a tape type, a flat type, a pad type, and a light incontinence pad. These paper diapers 1 are generally formed of a surface material 2, an inner material 3, a water absorbing/waterproof material 4, gathers 5, and other materials 6, as shown in FIG.

The surface material 2 is made of polyolefin/polyester nonwoven fabric or the like, and is used as the surface material 7 . As shown in FIG. 2, the surface material 7 is used for the outer portion of the paper diaper 1 and the inner surface portion that contacts the body. The inner material 3 is used as a water absorbing material 8 and a waterproof material 9. - 特許庁The water absorbent material 8 is composed of water absorbent paper 10 , cotton pulp 11 , and polymer absorbent material 12 . In this water absorbent material 8 , urine spread by the water absorbent paper 10 passes through the cotton-like pulp 11 and is sent to the polymer absorbent material 12 .

The waterproof material 9 is a waterproof sheet made of polyolefin film or the like, and prevents the absorbed urine from leaking to the outside. The gathers 5 are made of a polyolefin film or the like, and prevent leakage of urine absorbed by the absorbent material 8 from between the thighs. The other material 6 is used as a stretchable material or a binding material for binding members (parts) constituting the disposable diaper 1 . Polyurethane or the like is used for the elastic material, and the binding material is made of a styrene-based elastomer synthetic resin, and the members are adhered by hot-melt. Next, the processing system 15 for processing the used paper diapers (used paper diapers) will be described below.

The used sanitary goods processing system (hereinafter referred to as "processing system") 15 of the present embodiment does not crush or break the used disposable diaper as the used sanitary goods, but uses a plurality of types of members to form the used disposable diaper. A processing unit 18 equipped with a separator 16 for processing with a decomposition treatment liquid, a sorter 17 for sorting out a plurality of types of members that have been decomposed and dehydrated by the separator 16, and It is composed of a recycle resource recovery/reuse unit 19 that recovers recycle resources from the decomposition treatment liquid in which a plurality of types of members are mixed and reuses the recovered recycle resources.

As shown in FIG. 1, used disposable diapers collected from ordinary homes, hospitals, facilities, etc. are carried into a processing section 18 of a processing facility in which a processing system 15 is installed, and separated by a separator 16 provided in the processing section 18. inserted inside. A dissolvable collection bag is used to collect used paper diapers in the present embodiment. Solbag (manufactured by Aicello Co., Ltd.) formed of a water-soluble film containing PVA (polyvinyl alcohol) as a main component, for example, is used as the soluble collection bag. This dissolvable collection bag is made of a film that dissolves in warm water (for example, 70° C. or higher), and has the property of impervious to bacteria, viruses, and the like. A small amount of used paper diapers are put into this dissolvable collection bag and collected.

In this way, in the individual collection of multiple dissolvable collection bags containing a small amount of used paper diapers from hospitals, facilities, etc., only when transporting multiple dissolvable collection bags containing a small amount of used paper diapers The used paper diapers are placed in a large bag to be used, transported to a processing facility by a collection truck or the like, and then put into the separator 16 of the processing unit 18 after being taken out of the large bag. At this time, a dissolvable collection bag containing a small amount of used paper diapers can be thrown in.

Conventionally, when collecting used disposable diapers from general households, hospitals, facilities, etc., a large amount of used disposable diapers are generally stored in a relatively large waterproof plastic collection bag or collection box. A collection bag containing a large amount of used paper diapers is loaded onto a transport truck using a rack or the like and transported to a processing facility. After that, an operator takes out the used paper diaper from the recovery bag and puts it into the separator 16 . That is, since the collection bag cannot be thrown into the separator 16 as it is, the used paper diapers are manually taken out one by one from the collection bag and thrown into the separator 16 . In some cases, used paper diapers are collected in a packer truck, a flat-body truck, a container truck with a detachable device, or the like, in which garbage bags are loaded into the disposal facility.

In the collection method of the present embodiment, by using a dissolvable collection bag that dissolves in warm water, a small amount of used disposable diapers collected from hospitals and facilities are individually collected with a dissolvable collection bag. , it is possible to put the used paper diapers in the separator 16 while they are stored in the dissolvable collection bag, and the used paper diapers can be disposed of in a hygienic working environment without the operator touching the used paper diapers. Processing work can be carried out. In addition, by individually collecting a small amount in a dissolvable collection bag, the used paper diaper is collected in a sealed state, and the volume is reduced, so that the amount of input into the separator 16 of the processing unit can be increased, and the processing amount can be reduced. can be increased.

The used disposable diapers collected from hospitals, facilities, etc. by small-quantity individual collection as described above are processed by the processing system 15 installed in the processing facility. As described above, the processing system 15 is composed of the processing section 18 and the recycle resource collection/reuse section 19 , and the processing section 18 is provided with the separator 16 and the sorter 17 .

The separator 16 includes an outer separation tank, an inner separation tank rotatably provided in the outer separation tank, a supply means for supplying a processing liquid to the inner separation tank, and an inner separation tank. in the outer shell separation tank. The used paper diapers individually collected in the soluble collection bag are put into the inner drum separation tank together with the soluble collection bag, and stirred together with the supplied treatment liquid. The agitation by the inner trunk separation tank dissolves the dissolvable collection bag, and the used paper diaper inside is agitated in the inner trunk separation tank. In this embodiment, sterilization/disinfectant, lime, and water are used as the treatment liquid for decomposition.

When the used paper diaper is agitated with the treatment liquid in the inner trunk separation tank, the used paper diaper is divided into the surface material 2, the inner material 3, the absorbent/waterproof material 4, and the gathers 5, which are each member (part). , and other materials 6, and are decomposed into pulp, plastic, and other members contained in each member. After being decomposed into pulp, plastic, and other members in the treatment liquid of the separator 16, it is dehydrated by the separator 16, and the liquid waste liquid is sent to the recycling resource recovery/reuse unit 19, and The remaining solid plastics and other members are also sent to the recycle resource recovery/reuse unit 19 .

The recycle resource recovery/reuse unit 19 recovers at least pulp as a recycle resource from the treated wastewater in which pulp, plastic, and other members are mixed by the separator 16, and the recycle sorted by the sorter 17. It consists of a resource recovery unit 20 that recovers resources and a resource reuse unit 21 that manufactures cardboard materials, fertilizers, biomass fuels, and solid fuels from the recycled resources recovered from the resource recovery unit 20 .

The resource recovery unit 20 recovers at least pulp as a recyclable resource from the waste liquid containing a mixture of pulp, plastic, and other members that have been decomposed into a plurality of types of members without being crushed or broken by the separator 16. A pulp recovery device 22, a liquid fertilizer recovery unit 23 for recovering the treated wastewater containing pulp, plastic, and other materials forming the used paper diaper from the separator 16, and a scummer, which is a solid component contained in the treated wastewater. A scummer recovery device 24 for recovering, a fermentation raw material recovery unit 31 for recovering the waste liquid from the separator 16 and using it as a fermentation raw material, a second pulp recovery device 25 for recovering the pulp sorted by the sorter 17, and the pulp and a plastic collecting unit 26 for collecting adhered plastic.

The resource recycling unit 21 includes a corrugated board raw material manufacturing device 27 that manufactures corrugated raw materials from the pulp recovered by the first pulp recovery device 22, and a liquid fertilizer manufacturing device that manufactures liquid fertilizer from the waste liquid discharged from the separator 16. 28, a fertilizer manufacturing device 29 that manufactures fertilizer from the scummer collected by the scummer collection device 24, a biomass fuel manufacturing device 30 that manufactures biomass fuel from the scummer collected by the scummer collection device 24, and a separator 16. A methane gas fermentation device 32 that generates methane gas from the fermentation raw material recovered by the fermentation raw material recovery unit 31 from the discharged processed waste liquid, and a solid fuel production device 33 that produces solid fuel from the plastic pulp recovered from the plastic pulp recovery unit 26. I have.

Next, a method for processing used disposable diapers by the used sanitary product processing system according to the present embodiment will be described. After a small amount of used paper diapers are individually collected in dissolvable collection bags at hospitals, facilities, and general households, they are transported to processing facilities. A small amount of used paper diapers individually collected are carried into a processing section 18 provided in a processing facility and thrown into a separator 16 . In this case, in a state in which a small amount is individually recovered in the soluble recovery bag, the whole soluble recovery bag is put into the separator 16 .

A heated decomposition treatment liquid is supplied into the separator 16, and as the inner barrel separation tank rotates, the soluble collection bag is melted by the decomposition treatment liquid, and the used paper diapers contained therein are removed by the separation machine. 16 and agitated, and separated into members (surface material 2, inner material 3, water-absorbent/water-proof material 4, gathers 5, and other materials 6) forming the paper diaper by the decomposition treatment liquid. At the same time, it is decomposed into pulp, plastic, and other members contained in each member.

In this case, in the processing method of the present embodiment, the used paper diapers are not crushed or broken in the separator 16, but the plurality of types of members forming the paper diapers are separated in the processing unit 18 with the decomposition treatment liquid. is present in the treatment liquid in a molded state. For this reason, the processing liquid does not contain microplastics (microplastics) of 5 mm or less, which are generated when crushing and breaking.

In addition, the plurality of types of members forming the paper diaper are separated and decomposed into pulp, plastic, and other members contained in each member in the processing section 18, and mixed in the decomposition processing liquid. By dehydration, it is divided into decomposition processing liquid (waste liquid), solid plastic, and other parts. The decomposition liquid (waste liquid) taken out from the separator 16 after dehydration contains pulp dissolved in the decomposition liquid. In addition, pulp that has not been dissolved in the decomposing liquid adheres to plastics and other members remaining in the separator 16 after dehydration.

The first pulp recovery device 22 of the resource recovery unit 20 recovers pulp from the decomposition treated liquid (waste liquid) discharged from the separator 16 . Further, the scummer component contained in the waste liquid (waste liquid) discharged from the separator 16 and the waste liquid discharged from the first pulp recovery device is removed by the scummer recovery device 24 . Furthermore, the decomposition treated liquid (waste liquid) discharged from the separator 16 is recovered as a fermentation raw material by the fermentation raw material recovery unit 31 .

Plastics, which are solid components remaining in the separator 16, and other members are collected by the second pulp collecting device 25 of the resource collecting unit 20, and a small amount of pulp is collected by the sorting machine 17. The plastic is recovered by the plastic recovery section 26 .

The pulp recovered by the first pulp recovery device 22 is reused as a raw material for corrugated board by a raw material for corrugated cardboard manufacturing device 27 in a resource recycling unit 21, and the waste liquid from the separator 16 is processed as a liquid fertilizer by a liquid fertilizer manufacturing device 28. The scummer recovered by the scummer recovery device 24 is reused as solid fertilizer by the fertilizer production device 29, and the waste liquid from the separator 16 is reused as biomass fuel by the biomass fuel production device 30. be.

Further, the waste liquid from the separator 16 is recovered by the fermentation raw material recovery section 31 and reused as the fermentation raw material in the methane gas fermentation device 32 . Further, the pulp recovered by the second pulp recovery device 25 from the dry air discharged from the sorter 17 is reused as a raw material for corrugated board by the raw material for corrugated board manufacturing device 27, and the plastic pulp to which the pulp adheres is recovered by the plastic pulp recovery unit 26. After being made, it is reused as a solid fuel by the solid fuel manufacturing device 33 .

As described above, according to the used sanitary goods processing system and the used sanitary goods processing method, a plurality of types of used disposable diapers are formed without crushing or breaking the used disposable diapers as used sanitary goods. Each member is treated with a decomposition treatment liquid in a separator, and recycled resources are recovered from the decomposition treatment liquid in which multiple types of members are mixed in the recycling resource recovery/reuse department and reused.

Therefore, the materials that make up the used disposable diapers can be recovered as recycled resources, and the used sanitary goods are not crushed or broken. The amount of microplastics contained can be reduced as much as possible.

The measurement result of the number of microplastics contained in the waste liquid after decomposing the used paper diaper in the separator 16 will be described below. In the present embodiment, the number of small pieces of plastic contained in the waste liquid when 280 kg of used paper diapers were processed was measured. When the waste liquid discharged from the separator 16 is observed under a microscope, spheres are confirmed, and when the number of these spheres is counted, the counting result of the spheres (microplastics) contained in the waste liquid is the first time. The counting result was 338±91 cells/ml, and the second counting result was 382 cells/ml. The number of spheres by material in the second counting result was 83/ml for polyurethane, 0/ml for polyester, 33/ml for nylon, 0/ml for vinyl chloride resin, and sodium polyacrylate. was 266 cells/ml. These measurements were performed at Sanyo Techno Marine Co., Ltd., using a microscope FT-IR (LUMOS II, manufactured by Bruker) owned by the company. Also, the spheres contained in the final drainage were polymeric absorbent materials used in disposable diapers.

In this way, by decomposing used disposable diapers into the components that make up the used disposable diapers without crushing or breaking the used disposable diapers, a small amount of microplastics is contained in the wastewater after processing. Since they are only mixed, the amount of microplastics contained in the treatment liquid after treatment can be reduced as much as possible.

In addition, in the present embodiment, a small amount of used paper diapers are individually collected using a dissolvable collection bag made of PVA film, so that the used paper diapers are placed in the inner barrel separation tank of the separator 16 together with the dissolvable collection bag. Since it can be thrown in, the operator does not directly touch the used paper diaper. Therefore, since fungi and the like adhering to the used paper diaper do not adhere to the operator, the sanitary work environment is improved.

Further, in the present embodiment, the used paper diaper is not crushed or broken, the plastic is separated from the used paper diaper in a molded state as a member, and the separated plastic is recycled into solid fuel or biomass by the resource recycling unit 21. Since it is reused as fuel, it is possible to suppress deterioration of the natural environment without releasing microplastics into the natural world.

Further, according to the present invention, plastics contained in used disposable diapers are collected in the state of being molded, and the collected plastics are reused. Therefore, plastics are not released into the natural world. That is, when artificially produced plastics are released into the natural world, it takes a long time for the released plastics to decompose and become soil or the like. In the meantime, plastics are taken into animals and plants, causing destruction of nature and adversely affecting animals and plants. Therefore, once molded plastic is collected in the molded state without being crushed or destroyed, and reused in the collected state, the plastic is not released into the natural world, and the deterioration of the natural environment is not caused.

In the above embodiment, Solbag was used as a dissolvable collection bag for individually collecting a small amount of used paper diapers. . Further, by providing a treatment facility using the treatment system 15 of the present embodiment in the sewage treatment plant, it is possible to treat used paper diapers using recycled water treated in the sewage treatment plant and discharged into rivers, seas, etc. good. In addition, by providing the cardboard raw material manufacturing device 27, the liquid fertilizer manufacturing device 28, the fertilizer manufacturing device 29, the biomass fuel manufacturing device 30, the methane gas fermentation device 32, and the solid fuel manufacturing device 33 in the sewage treatment plant, Raw materials, liquid fertilizers, fertilizers, biomass fuels, methane gas, and solid fuels may be produced.

While embodiments of the present invention have been disclosed above, it will be apparent that modifications may be made by those skilled in the art without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the claims.

The system and method for treating used sanitary products according to the present invention can be used not only for treating used disposable diapers, but also for treating sanitary products such as incontinence pads that use pulp and plastic as raw materials and that use polymer absorbent materials. can be done.

1 Disposable Diaper 2 Surface Material 3 Inner Material 4 Water Absorbent/Waterproof Material 5 Gather 6 Other Materials 15 Used Sanitary Goods Processing System 16 Separator 17 Sorter 18 Processing Department 19 Recycling Resource Recovery and Reuse Department

In order to solve the above-described problems and achieve the object, a first aspect of the present invention is a processing system for processing used sanitary goods, which comprises a dissolvable collection bag formed of a water-soluble film and dissolved in warm water. A separator that receives the collected used sanitary goods stored in a container and treats the used sanitary goods as they are with a decomposition treatment liquid without crushing or breaking the used sanitary goods, and A processing unit equipped with a sorter that sorts out multiple types of members that have been decomposed and dehydrated by the separator, and recycling resources from the decomposed liquid containing a mixture of multiple types of members that have been decomposed by the separator. It is characterized by comprising a recycle resource recovery/reuse unit that recovers and reuses the recovered recycle resource.

In order to solve the above-described problems and achieve the object, a first aspect of the present invention is a processing system for processing used sanitary goods, which comprises a dissolvable collection bag formed of a water-soluble film and dissolved in warm water. A separator that receives the collected used sanitary goods stored in a container and treats the used sanitary goods as they are with a decomposition treatment liquid without crushing or breaking the used sanitary goods, and A processing unit equipped with a sorter that sorts out multiple types of members that have been decomposed and dehydrated by the separator, and recycling resources from the decomposed liquid containing a mixture of multiple types of members that have been decomposed by the separator. It comprises a recycle resource collection/reuse unit that collects and reuses the collected recycle resources, and the recycle resource collection/reuse unit collects processed waste containing a mixture of multiple types of members that have been decomposed by the separator. a resource recovery unit that recovers at least pulp as the recycled resource from the liquid and recovers the recycled resource sorted by the sorter; and a cardboard material, fertilizer, and biomass fuel from the recycled resource recovered from the resource recovery unit. , and a resource recycling unit that manufactures solid fuel, and the resource recovery unit recovers the recycled resource from the waste liquid containing a mixture of multiple types of materials that have been decomposed without being crushed or broken by the separator. a first pulp recovery device for recovering at least pulp; a liquid fertilizer recovery unit for recovering from the separator a treated waste liquid in which a plurality of types of members forming the used sanitary goods are mixed; and solids contained in the treated waste liquid It has a scummer recovery device for recovering scummer which is a component, a second pulp recovery device for recovering the pulp sorted by the sorter, and a plastic pulp recovery section for recovering the plastic to which the pulp adheres.

In a second aspect of the present invention, the resource recycling unit comprises a corrugated board raw material manufacturing device for manufacturing corrugated board raw materials from the pulp recovered by the first pulp recovery device, and the treated waste liquid discharged from the separator. a liquid fertilizer manufacturing device that manufactures liquid fertilizer from waste, a fertilizer manufacturing device that manufactures fertilizer from the scummer collected by the scummer collection device, and a biomass fuel manufacturing device that manufactures biomass fuel from the scummer collected by the scummer collection device. , a methane gas fermentation device that generates methane gas from the fermentation raw material collected by the fermentation raw material collection unit from the treated waste liquid discharged from the separator, and a solid fuel manufacturing unit that manufactures solid fuel from the plastic pulp collected from the plastic pulp collection unit. and a device.

A third aspect of the present invention is characterized in that the decomposition treatment liquid comprises a disinfectant/disinfectant, lime, and water.

A fourth aspect of the present invention is a processing method for processing used sanitary products, in which the used sanitary products are not crushed or broken, and the plurality of types of members forming the used sanitary products are decomposed in the processing unit as they are. The treatment liquid is decomposed by a separator, the plurality of types of members mixed with the decomposition treatment liquid are dehydrated by the separator, and the plurality of types of members that are solids after dehydration are sorted by a sorter in the processing unit. Then, after dehydrating the used sanitary goods that have been decomposed and treated, the resource recovery unit recovers pulp, scummer, and fermentation raw materials from the waste liquid discharged from the separator, and the first pulp recovered by the resource recovery unit, The scummer and the fermented raw material are used in the resource recycling department to produce corrugated board material from the first pulp, to produce fertilizer and biomass fuel from the scummer, to produce methane gas from the fermented raw material, and to produce the waste discharged from the separator. A liquid fertilizer is produced from the liquid, decomposed and dewatered by the separator, and the second pulp and plastic pulp are recovered by the resource recovery unit from the multiple types of members sorted by the sorter, and recovered by the resource recovery unit. The second pulp and plastic pulp are used in the resource recycling unit to produce corrugated board materials from the pulp and to produce solid fuel from the plastic pulp.

Claims (7)

A processing system for processing used sanitary products, comprising:
A separator that treats a plurality of types of members as they are to form used sanitary articles without crushing or breaking the used sanitary articles with a decomposition treatment liquid, and a plurality of types of members that have been decomposed and dehydrated by the separator. A processing unit equipped with a sorter that sorts
A use characterized by comprising a recycled resource recovery/reuse unit for recovering recycled resources from the decomposition treatment liquid in which a plurality of types of members are mixed after being decomposed by the separator, and reusing the recovered recycled resources. Disposal system for used sanitary products. The recycle resource recovery/reuse unit recovers at least pulp as the recycle resource from the treated waste liquid in which a plurality of types of materials are mixed and decomposed by the separator, and recovers the recycle resource sorted by the sorter. a resource recovery department that
2. The system for treating used sanitary products according to claim 1, further comprising a resource recycling section that manufactures cardboard materials, fertilizer, biomass fuel, and solid fuel from the recycled resources recovered from the resource recovery section. The resource recovery unit is a first pulp recovery device for recovering at least pulp as a recyclable resource from the treated waste liquid containing a mixture of a plurality of types of members decomposed into a plurality of types of members without being crushed or broken by the separator. and,
A liquid fertilizer recovery unit for recovering from the separator a processing waste liquid in which a plurality of types of members forming the used sanitary goods are mixed, a scummer recovery device for recovering scummer, which is a solid component contained in the processing waste liquid,
3. The system for treating used sanitary products according to claim 2, further comprising: a second pulp recovery device for recovering pulp sorted by said sorter; . The resource recycling unit includes a corrugated board raw material manufacturing device that manufactures corrugated board raw materials from the pulp recovered by the first pulp recovery device;
a liquid fertilizer production device for producing liquid fertilizer from the treated wastewater discharged from the separator;
a fertilizer production device for producing fertilizer from the scummer recovered by the scummer recovery device;
a biomass fuel production device for producing biomass fuel from the scummer recovered by the scummer recovery device;
a methane gas fermentation device for generating methane gas from the fermentation raw material recovered by the fermentation raw material recovery unit from the treated waste liquid discharged from the separator;
4. The system for treating used sanitary products according to claim 3, further comprising a solid fuel manufacturing device for manufacturing solid fuel from the plastic pulp recovered from the plastic pulp recovery unit. 5. The system for treating used sanitary products according to any one of claims 1 to 4, wherein the decomposition treatment liquid comprises a sterilizing/disinfecting agent, lime, and water. A processing method for processing used sanitary products, comprising:
The used sanitary goods are not crushed or broken, and the multiple types of members forming the used sanitary goods are decomposed as they are in the decomposition liquid, and the multiple types of dehydrated members decomposed by the decomposition liquid are sorted. processed in a processing unit equipped with a
The resource recovery unit collects recycled resources from the plurality of types of members and waste liquids that have been decomposed and processed in the processing unit,
A method for treating used sanitary products, wherein waste liquid, pulp, scummer, and plastic, which are recycled resources recovered by the resource recovery unit, are reused in products by the resource recycling unit. A processing method for processing used sanitary products, comprising:
The used sanitary goods are decomposed by a separator with a decomposition treatment liquid in the processing part as they are, and the multiple types of members forming the used sanitary goods are decomposed without being crushed or broken,
Dehydrating the plurality of types of members mixed with the decomposition treatment liquid by the separator, and sorting the plurality of types of members that are solids after dehydration with a sorter in the processing unit,
After dehydrating the decomposed used sanitary goods, pulp, scummer, and fermentation raw materials are recovered from the waste liquid discharged from the separator in a resource recovery unit,
The first pulp, scummer, and fermentation raw material collected by the resource recovery unit are used in the resource recycling unit to produce corrugated board raw materials from the first pulp, to produce fertilizer and biomass fuel from the scummer, and to produce methane gas from the fermentation raw material. and producing liquid fertilizer from the waste liquid discharged from the separator,
After decomposing and dehydrating in the separator, pulp and plastic are recovered in the resource recovery unit from the multiple types of members sorted out by the sorter,
A method for processing used sanitary goods, comprising the steps of producing a raw material for corrugated board from the pulp and plastic pulp collected by a resource recovery section and producing a solid fuel from the plastic pulp in a resource recycling section.

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