JP2019084510A - Treatment method of sanitary article - Google Patents

Abstract

To provide a treatment method of a sanitary article capable of performing treatment at a prescribed moisture content, stably treating the sanitary article and shortening a treating time by improving treatment efficiency when treating used sanitary articles such as a paper diaper, a urine absorbing pad and the like.SOLUTION: In a treatment method of a used paper diaper where the used paper diaper 6 as a sanitary article is charged into the inner barrel separation tank 4 of a separator 1, water and a decomposer are supplied into a rotation drum and the used paper diaper 6 is separated to a composing material of the diaper and treated, the used paper diaper 6 is moisturized before being charged in the separator 1 and made so as to have a prescribed weight.SELECTED DRAWING: Figure 2

Description

  The present invention is a method of treating sanitary goods in which sanitary goods such as used disposable diapers and urine absorbing pads, water and a decomposing agent are charged into a separator, and separated into plural types of materials constituting the sanitary goods. About.

  In recent years, in hospitals and nursing homes, sanitary goods such as disposable diapers and urine absorbing pads are used as disposable diapers instead of cloth diapers. This sanitary product is composed of materials such as an absorbent made of pulp and the like, a polymeric absorbent (polymer) that holds the water absorbed by the absorbent, and a waterproof material (plastic and the like) that wraps these. .

  Most of the used hygiene products after use are currently treated as general waste. However, if the sanitary goods are treated as general waste, for example, they are incinerated to produce harmful substances, or if they are landfilled, the soil is aggravated by infectious substances and the like. Then, the processing device of the used disposable diaper as a sanitary goods which decomposes | disassembles and uses the used disposable diaper from a hygienic and an environmental viewpoint for every raw material is proposed by patent document 1, 2, 3. FIG.

  In the used disposable diaper processing device proposed in Patent Documents 1, 2 and 3, by mixing the used disposable diaper with the processing solution in the rotating drum, a plurality of pulp, polymer polymer, plastic and the like can be used. It is broken down into species of material.

Patent No. 3895081 gazette Patent No. 3597492 Patent No. 3569260

  However, the amount of water (amount of water such as urine absorbed by high-molecular polymer) contained in the used disposable diaper as a sanitary product inserted into the rotating drum differs depending on the used disposable diaper, When a certain amount of treatment liquid is introduced into the rotating drum, the amount of water in the rotating drum may be too high or too low. That is, the amount of water contained in the used disposable diaper depends on the amount of absorbed urine and the amount of water contained in the waste, and when the used disposable diaper is disassembled into a plurality of types of materials, the water emitted from the used disposable diaper The amount will vary with each used disposable diaper. For this reason, the total amount of water in the rotating drum depends on the amount of water contained in the used disposable diaper.

  In addition, there are few used disposable diapers and urine pads collected that absorb stool and urine up to the maximum absorption capacity of disposable diapers and urine pads, and some of them are discarded and recovered while not in use. There is also one. For this reason, the amount of moisture contained in the used disposable diaper differs depending on the used disposable diaper.

  However, when the amount of the processing liquid to be supplied into the rotating drum is constant, the amount of water in the rotating drum may be large or the amount of water may be small. For this reason, when processing a used disposable diaper in a drum, since the water content changes every time a used disposable diaper is processed, the used disposable diaper can not be stably processed (decomposed). For this reason, it may take time to disassemble the used disposable diaper, and there is a problem that the processing time of the used disposable diaper becomes long.

  Therefore, the present invention can treat with a certain amount of moisture when treating sanitary articles such as used disposable diapers and urine absorbing pads, and can stably process sanitary articles, and the treatment efficiency is An object of the present invention is to provide a method of treating sanitary products which can improve and shorten the treatment time.

  In order to solve the problems described above and to achieve the object, according to a first aspect of the present invention, used sanitary goods are introduced into an inner barrel separation tank of a separator, and water and a decomposition agent are contained in a rotating drum. A method of treating a sanitary product by separating the used sanitary product into a material constituting the sanitary product and supplying the used sanitary product to water, the water being supplied to the used sanitary product before being introduced into the separator. It is characterized by including it and making it a predetermined weight.

  In the second aspect of the present invention, the sanitary product contains sufficient water in advance, and a plurality of sanitary products containing water are charged into a measuring container until a predetermined weight is obtained, and a plurality of hygiene having a predetermined weight. An article is characterized in that it is charged into an inner barrel separation tank of the separator.

  In the third aspect of the present invention, a predetermined number of the sanitary goods are put into a measuring container and the weight is measured, and when the measured result is lower than a predetermined value, water is added until the predetermined value is reached. It is characterized in that it is put into a measuring container and absorbed into a sanitary product.

  According to the present invention, when treating sanitary goods, the sanitary goods can be treated in a state of containing a certain amount of water, so that the treatment efficiency can be increased, the treatment time can be shortened, and the separator can be stabilized. Sanitary goods can be processed.

FIG. 1 is a schematic configuration view showing a separator for separating a sanitary good by a method of treating a sanitary good according to an embodiment of the present invention. FIG. 2 is an explanatory view showing a step of allowing the sanitary article to be hydrated in the method of treating a sanitary article according to the embodiment of the present invention, and a process of supplying water to the individual sanitary article. FIG. 3 shows a step of allowing the sanitary article to be hydrated in the method of treating a sanitary article according to the embodiment of the present invention, and a step of supplying water into a weighing box containing a predetermined number of sanitary articles. Explanatory drawing.

Hereinafter, the processing method of the hygiene article concerning an embodiment of the present invention is explained. In the method of treating sanitary products according to the embodiment of the present invention, a used disposable diaper as a sanitary product is put into an inner barrel separation tank of a separator, water and a decomposing agent are supplied into a rotating drum and used. A method of treating sanitary products, comprising treating a finished disposable diaper into a material constituting a disposable diaper and treating the disposable diaper, wherein the used disposable diaper is made to contain water to a predetermined weight before being introduced into the separator. It is characterized by
First, the separator used in the method of treating sanitary goods according to the embodiment of the present invention will be described.

[Separator]
As shown in FIG. 1, the separator 1 includes a housing 2, an outer shell separation tank 3, an inner shell separation tank 4 as a rotary drum, and a decomposition water supply unit 5. The outer shell separation tank 3 is fixed to the housing 2. The inner shell separation tank 4 is rotatably disposed in the outer shell separation tank 3. The decomposition water supply unit 5 supplies decomposition water 7 to the used disposable diaper 6 in the inner barrel separation tank 4.

  The housing 2 has a box-like shape, and a circular input / output port 8 is provided on the front side. From the input / outlet 8, used disposable diapers 6 are loaded into the inner shell separation tank 4, and after the used disposable diapers 6 are disassembled, the solid remaining in the inner shell separation tank 4 is discharged Be done. A circular input and output door 9 is rotatably provided at the input and output port 8. An outer barrel separation tank 3 is fixed to the inside of the housing 2.

  The outer shell separation tank 3 has a cylindrical shape, an opening 10 communicating with the inlet / outlet 8 of the housing 2 is formed on one end face, and the other end face is closed. In a state where the loading / unloading door 9 closes the loading / unloading port 8, the inside of the outer shell separation tank 3 is sealed. An inner shell separation tank 4 is rotatably disposed in the outer shell separation tank 3.

  The inner barrel separation tank 4 has a cylindrical shape with an inner diameter smaller than the inner diameter of the outer shell separation tank 3, and a hole having a small diameter is formed by punching or the like on the entire outer peripheral surface (side surface). One end face side of the inner barrel separation tank 4 is located on the front side of the housing 2, and the other end face is located on the rear side of the housing 2. An opening 11 communicating with the input / output port 8 of the housing 2 is formed on one end face side. The rotary drive shaft 12 projects from the other end face. A rotational drive force from a drive motor (not shown) is transmitted to the rotational drive shaft 12, and the inner barrel separation tank 4 is rotationally driven. Into the inner barrel separation tank 4, used paper diapers 6 are introduced, and decomposition water is supplied from the decomposition water supply unit 5.

  The decomposition water supply unit 5 includes a decomposition agent tank 13, a detergent tank 14, a decomposition water supply port 15, a supply pump 16, and pipes 17 and 18. The decomposing agent tank 13 stores decomposing water 7 in which the decomposing agent, the water, and the disinfectant mixed in a predetermined ratio are mixed. The supply pump 16 sends the decomposition water, in which the decomposition agent, water, and the disinfectant are mixed, to the decomposition water supply port 15 for supplying the inside of the inner shell separation tank 4. Further, a detergent for washing the used disposable diaper 6 is supplied from the detergent tank 14 into the inner barrel separation tank 4.

  Then, the inner barrel separation tank 4 is rotationally driven in a state where the decomposed water 7 is poured down from the upper portion of the used disposable diaper 6. As a result, the used disposable diaper 6 is separated from the constituent materials of the used disposable diaper 6 by the supplied decomposed water 7 and the waste material (soiled water) absorbed in the used disposable diaper 6. In this case, the decomposition water is uniformly soaked (penetrated) in the used disposable diaper 6, and the used disposable diaper 6 is separated into a plurality of types of materials and waste (sewage).

  Solids which can not be dissolved in the decomposition water 7 (pulp and plastics which are not dissolved in the decomposition water) remain in the inner barrel separation tank 4 and pulp and soil dissolved in the decomposition water are discharged to the discharge portion 19 Ru. The discharge unit 19 is a drainage receiving tank 20 from which the decomposed water in the outer shell separation tank 3 is discharged, a drainage pit 21 for filtering and temporarily storing the drainage, and a pump for delivering the drainage from the drainage pit 21 to the pulp recovery device. And 22 are formed. Pulp is dissolved and contained in the drainage sent from the drainage pit 21 to the pulp recovery device (not shown), and the pulp in the drainage is recovered by the pulp recovery device.

  Next, a method of incorporating water into the used disposable diaper 6 before being introduced into the separator 1 to make it have a predetermined weight will be described. The used disposable diaper 6 before being introduced into the separator 1 is filled with water and made to have a predetermined weight, and is introduced into the inner barrel separation tank 4 of the separator 1 by the insertion machine 23.

  As shown in FIG. 2, a plurality of used disposable diapers 6 accumulated from facilities such as general homes, hospitals, nursing homes, etc. are placed on the transport conveyor 24. The amount of moisture contained in each used disposable diaper 6 placed on the conveyer 24 differs depending on the used disposable diaper 6. Water 26 is sprayed onto the plurality of used paper diapers 6 from a plurality of water supply nozzles 25 disposed along the transport direction of the transport conveyor 24 above the transport conveyor 24. When the water 26 is sprayed from the water supply nozzle 25 onto the used disposable diaper 6, the used disposable diaper 6 absorbs the sprayed water by the polymer.

  When the high molecular weight polymer absorbs water, the weight of one used disposable diaper 6 is up to about 4000 g. In this case, for example, the weight of the disposable diaper in a water-free state is about 100 g, and it will be about 400 g when absorbing one urine. When the water 26 is supplied by the water supply nozzle 25 from this state of about 400 g, the used disposable diaper 6 absorbs water and weighs up to about 4000 g.

  Thus, the used disposable diaper 6 having sufficiently absorbed water is introduced into the measuring container 28 on the measuring conveyer 27. A measuring device 29 for measuring the weight of the measuring container 28 is disposed on the inner surface side of the measuring conveyance conveyor 27, and the weight of the measuring container 28 is measured. The used disposable diapers 6 that have sufficiently absorbed water are transported by the transport conveyor 24 and sequentially put into the weighing container 28. When the weight of the weighing container 28 into which the plurality of used paper diapers 6 that have absorbed water is charged becomes a predetermined weight, the weighing conveyer 27 moves and moves together with the weighing container 28 to the charging machine 23 side .

  Then, when the measuring container 28 approaches the loading machine 23, the measuring container 28 is also reversed by the reverse movement of the measuring transport conveyor 27, and a plurality of used paper diapers 6 in the measuring container 28 are loaded into the loading machine 23. When the used paper diaper 6 of a predetermined weight is loaded into the loading machine 23, the loading machine 23 moves to the loading / unloading port 8 of the separator 1, as shown in FIG. Into the inner barrel separation tank 4.

  The used disposable diaper 6 introduced into the inner shell separation tank 4 is mixed with the decomposition water in the inner shell separation tank 4 in a state of containing a predetermined amount of water and is separated into a plurality of materials of the paper diaper. At this time, the amount of decomposition water supplied into the inner barrel separation tank 4 is set to a fixed amount in accordance with the processing capacity of the used disposable diaper of the separator 1. In addition, the used disposable diaper 6 absorbs a certain amount of water. Therefore, the amount of water as a whole in the separator 1 is an appropriate amount for decomposing the used disposable diaper 6 in the inner barrel separation tank 4.

  That is, the amount of water absorbed by the used paper diaper 6 introduced into the inner body separation tank 4 is the weight of the used paper diaper 6 capable of processing (decomposing) the used paper diaper 6 by the separator 1. Is measured by the measuring instrument 29. As a result, the inner barrel separation tank 4 of the separator 1 is set to an optimal amount for processing (disassembling) the used disposable diaper 6.

  In addition, the absorption amount of each water of the used disposable diaper 6 which absorbed the water thrown in in the measuring container 28 differs, respectively. In addition, when the total weight of the plurality of used disposable diapers 6 loaded into the measuring container 28 reaches a predetermined weight, the used disposable diapers 6 are loaded into the inner barrel separation tank 4 by the loading machine 23 . Thereby, the used disposable diaper 6 is decomposed by the decomposition water in the inner shell separation tank 4, and the amount of water coming out of the inner shell separation tank 4 becomes a predetermined amount as a whole.

  Next, as a method of including water in the used disposable diaper 6, another method shown in FIG. 3 will be described. As shown in FIG. 3, the weighing and conveying conveyor 30 is provided with a plurality of weighing containers 31. The measuring devices 32 and 33 are disposed in the inside of the measuring conveyance conveyor 30 in a state in which relative movement with the measuring conveyance conveyor 30 is not possible. The measuring device 32 measures the weight of the weighing container 31 into which a plurality of used disposable diapers 6 are charged. The measuring device 33 measures the weight of the measuring container 31 in a state in which the used disposable diaper 6 in the measuring container 31 is supplied with water. In addition, a water supply nozzle 34 is provided at the upper part of the measuring and conveying conveyor 30 between the measuring device 32 and the measuring device 33.

  After inserting a predetermined number of used disposable diapers 6 into the empty measuring container 31, the weight of the measuring container 31 is measured by the measuring device 32. If the weight of the measuring container 31 into which the plurality of used disposable diapers 6 are charged is lower than a predetermined weight that can be appropriately treated (disassembled) by the separator 1 according to the measurement result of the measuring device 32, the water supply nozzle 34 Thus, water is supplied into the measuring container 31.

  In this case, the amount of water 26 supplied by the water supply nozzle 34 is set depending on how much the measurement result by the measuring device 32 is lower than a predetermined weight. When the water 26 is supplied into the measuring container 31, the polymer of the used disposable diaper 6 in the measuring container 31 absorbs the water 26. The measuring container 33 measures the weight of the measuring container 31 into which the plurality of used disposable diapers 6 that have absorbed water are charged. When it is confirmed that the weight of the weighing container 31 is a predetermined weight, the plurality of used disposable diapers 6 in the weighing container 31 are transferred into the feeding machine 23. The feeder 23 places a plurality of used disposable diapers 6 of a predetermined weight, which have absorbed water, into the inner barrel separation tank 4 of the separator 1.

  Next, the state of use of the used disposable diaper and the urine absorbing pad which are used and collected by a hospital, a facility or the like, and the processing of the used disposable diaper will be described below. Used disposable diapers (taped type, pant type, urine absorption pad) collected from hospitals, nursing homes, and general households and transported to a treatment plant are available up to the maximum absorption announced by the manufacturer of the diaper. There is almost nothing that absorbs urine. Some are unused and discarded.

  Hospitals and facilities usually exchange the disposable diaper 5 to 6 times a day. In many hospitals and facilities, one tape is used per day as a tape-fastening type and pants type, and a urine absorbing pad is attached to the inner, and 5 to 6 sheets are exchanged per day.

  Therefore, at regular times, all hospitalized and hospitalized hospitals and residents will be eligible for disposable diaper change, and even if it is not dirty, the urine absorbing pad, taping type, and pants type will be replaced.

  This means that, at the stage of being carried into a processing plant for processing disposable diapers, the absorption capacity of the polymer absorbent still has a margin, so the rate of decomposition of the disposable diaper when processing the disposable diaper is slowed. It will perform processing that is not constant and inefficient. In addition, since the amount of absorption varies depending on the type of disposable diaper, there is a problem that the time period for supplying water and starting the decomposition is not constant.

  According to the “Fukuoka Metropolitan Area Disposable Diaper Recycling System Study Committee Report” on how much water the used disposable diaper absorbs after disposal, the adult paper diaper weighs about 50 g when not used After use, it is stated that the weight is about 4 times at 210 g.

  However, even if it absorbs urine and so on and weighs about 4 to 5 times, it still has absorption ability, and this is a factor that absorbs water from other than the human excretion process. For example, about 40 g of a urine absorbing pad weighs 22.5 times to 900 g, and a 100 g taping type diaper also weighs 40 g of 3,960 g, which absorbs a large amount of water.

  In the treatment process for treating used disposable diapers, water supply is started in the separator, and after 20 to 40 times the water is absorbed, or in the water supply process, the water held by the used disposable diapers is discharged and decomposition Considering the start, it is possible to take out the pulp stably by equalizing the moisture before charging the separator and shortening the processing time.

  At present, used disposable diapers are carried into municipal cleaning plants mainly as general waste. The used disposable diapers carried into the cleaning plant are collected in the waste pit of the cleaning plant and then thrown into the incinerator. In the waste pit, there is a high water content (in some cases, it is in the pool), so the used disposable diaper that has sufficient capacity for the absorption capacity of the polymer absorbent maximizes the water content in the waste pit. It absorbs. That is, the waste pit of the cleaning plant is an environment where the used disposable diapers absorb water to the maximum.

  As described above, when used disposable diapers are incinerated as general waste by the incinerator of a local cleaning plant, the used disposable diapers absorb moisture to the maximum while being accumulated in the waste pit, and are incinerated. When the weight increases, and incinerating a used disposable diaper containing a large amount of water, problems such as lowering the temperature in the furnace occur.

  For this reason, in order to process used disposable diapers without burning it, in the present embodiment, the used disposable diapers are disassembled by the separator into materials constituting the disposable diapers. In the present invention, in the present invention, the used disposable diaper previously contains a certain amount of water in order to perform the most efficient decomposition process when the used disposable diaper is disassembled into each material by the separator. The following effects are obtained by this.

  According to the processing method of the used paper diaper concerning this embodiment, the used paper diaper 6 which absorbed a predetermined weight, ie, a predetermined amount of water, is thrown into inner drum separation tank 4 of separation machine 1 Therefore, the used paper diaper 6 can be processed with a fixed water content, the processing efficiency can be increased, the processing time can be shortened, and the used paper diaper can be processed stably by the separator.

  Further, according to the method of treating used disposable diapers according to the present embodiment, even when used disposable diapers 6 having different moisture content, when used in separator 1, a plurality of used disposable diapers Since the total amount of water is made constant and then introduced into the separator 1, the amount of the decomposing agent supplied to the separator 1 and the amount of the detergent can always be made constant.

  In the above-mentioned embodiment, although the processing method in the case of throwing used paper diaper 6 to the separator 1 which consists of the outer shell separation tank 3 and the inner shell separation tank 4 was explained, the used paper diaper 6 is put Used separators are continuous separators in which a plurality of separation tanks are linearly arranged and the used disposable diapers are sequentially transported to each separation tank and decomposed into a plurality of types of materials by decomposition water. The present invention can be applied to the case of introducing For example, a used paper diaper is inserted into a continuous separator in which a cylindrical screw conveyor is fixed inside and a forward, reverse, and swingable inner barrel separation tank is provided in a cylindrical outer barrel separation tank. Also, the present invention can be applied at any time.

  In the above embodiment, although the method of treating a disposable diaper as a sanitary product has been described, the method of treating a sanitary product of the present invention is also applied to the case of treating a urine absorbing pad that absorbs urine with a polymer. can do.

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

  The method for treating sanitary goods according to the present invention can be used in a treatment apparatus for sanitary goods which decomposes a used disposable diaper as a sanitary goods into a plurality of kinds of materials and processes the diaper, and in particular, the materials constituting the sanitary goods. It can be effectively used in a treatment apparatus for sanitary products in which a high molecular weight polymer can be separated by decomposition water.

Reference Signs List 1 separator 4 inner shell separation tank 6 used disposable diaper 7 decomposition water 28 weighing container 31 weighing container

Claims (3)

Sanitary goods which throws used sanitary goods into a rotating drum of a separator, supplies water and a decomposing agent into an inner barrel separation tank and separates the sanitary goods into materials constituting the sanitary goods and processes them. Processing method of
A method of treating hygiene products, comprising adding water to the hygiene products to make them have a predetermined weight before being introduced into the separator.   The sanitary wares pre-include sufficient water, and a plurality of sanitary wares including water are charged into a weighing container until a predetermined weight is reached, and a plurality of sanitary wares having a predetermined weight are separated in the inner shell of the separator. The method for treating hygiene products according to claim 1, characterized in that it is introduced into a tank.   A predetermined number of sanitary goods are put into the measuring container, the weight is measured, and when the measurement result is lower than the predetermined value, the water is put into the measuring container until the predetermined value is reached. A method of treating hygiene products according to claim 1, characterized in that they are absorbed.

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