KR101173154B1 - Pulp separation method of used hygiene article - Google Patents

Abstract

PURPOSE: A method for separating pulp from a waste hygienic product is provided to enhance the purity of pulp raw material and to shorten dissociation time. CONSTITUTION: A method for separating pulp from a waste hygienic product containing a pulp material having plastic and super absorbent materials(SAM) comprises: a step of impregnating the waste hygienic product to an absorption inhibitor mixture to suppress water absorption of the SAM; a step of washing the waste hygienic product; a step of pulverizing the waste hygienic product in a predetermined size; a step of adding certain amount of SAM dissociation agent; a step of stirring and separating plastic; a step of filtering and collecting pulp raw materials; and a step of heating and drying the pulp raw materials.

Description

Pulp separation method of used hygiene article

The present invention uses a sanitary product such as wet tissue paper tissue or diaper of pulp material including plastic and super absorbent polymer resin (SAM, hereinafter referred to as 'SAM'), and then used Disclosed is a pulp separation method of waste hygiene products for separating pulp (hereinafter, the same concept as 'pulp raw materials'), and the dissociating agent activation conditions using aeration temperature and aeration of dissociation process in which SAM dissociating agent is mixed Disclosed is a method for separating pulp of waste sanitary products including dissociation process and plastic separation process using difference in specific gravity between plastic and other pulp raw materials.

In general, SAM is a functional resin utilizing the improvement of the liquid absorption ability due to the improvement of the swelling property or the hydrophilicity of the water-soluble, swelling or hydrophilic properties of the crosslinked polymer generated while crosslinking the polymer. Specifically, the SAM is a starch, cellulose or polyacrylic acid salt, polyvinyl alcohol, polyacrylamide and polyoxyethylene ( It can be divided into synthetic resin system such as polyoxyethylene), and an appropriate kind is used depending on the purpose or use of sanitary products including SAM.

In particular, among the waste hygiene products including SAM, the waste diaper is generally composed of 24% by weight of pulp, 10% by weight of plastic, 5% by weight of SAM, 55% by weight of water and 6% by weight of feces. The pulp and plastics of waste hygiene products, including, are separated from the waste hygiene products by various methods because they can be recycled.

In connection with the above, Korean Patent No. 10-0627996, filed by the applicant or inventor, relates to a composition for disintegrating wet paper (SAM dissociating agent), and easily dissociates SAM in wet paper showing waste hygiene products. In order to provide a dissociation composition consisting of edible vinegar containing sodium hypochlorite and acetic acid, to realize the effect of providing a SAM dissociating agent that can replace the conventional SAM dissociating agent containing a large amount of sodium hypochlorite , Korean Patent No. 10-0761782 proposes a technology to further specify the vinegar of the SAM dissociation agent proposed in the domestic Patent No. 10-0627996, can be more easily produced vinegar included in the SAM dissociation agent I realized the effect.

In addition, Korean Patent No. 10-1058785 relates to a composition for dissociation of hygiene absorbent articles, and proposes a SAM dissociating agent including a stool with vinegar instead of sodium hypochlorite of the SAM dissociation agent. Thus, an economically advantageous SAM dissociating agent can be produced.

Recently, however, a better treatment method for pulp separation of waste hygiene products is required for more effective use of SAM dissociation agent by the above technique, and thus, continuous research and development is required.

The present invention has been made to improve the problems according to the prior art of the pulp separation method of waste hygiene products, the conventional pulp separation method for separating pulp from waste hygiene products to easily separate the pulp and SAM of the waste hygiene products In order to focus on the purpose, a certain amount of SAM dissociation agent is included in the waste sanitary products mixed with water and crushed to dissolve SAM in water, and then the pulp is separated from the water in which the SAM is dissolved to recycle the separated pulp raw materials. Because of this method, the problem of having to separate the plastic material from the pulp raw material separated from the water where the SAM is dissolved, and the activation of the SAM dissociation agent included to separate the SAM from the waste sanitary products, do not consider the dissociation process time. This prolonged problem occurs and its main purpose is to provide a solution to it.

The present invention is to realize the desired object as described above,

In the pulp separation method of waste hygiene products having a pulp material containing plastic and SAM, the absorption control and washing to impregnate the waste hygiene products in the absorbent mixture to inhibit the water absorption of SAM and to wash the dirt in the waste hygiene products Process; A shredding step of shredding the waste hygiene product subjected to the absorption suppression and washing process into a predetermined amount of water and then shredding it to a predetermined size; A dissociation step of dissolving a SAM contained in the waste hygiene article at a predetermined temperature by adding a predetermined amount of SAM dissociation agent to the waste hygiene product mixed with the water and subjected to the crushing process; A plastic separation process of rotating and stirring the dissociated waste hygiene product and separating water in which pulp material including SAM and plastic equal to water is settled; A filtration step of filtering the pulp raw material only in the water in which the pulp raw material in which the SAM is dissociated is sedimented by the plastic separation process; It proposes a pulp separation method of the waste sanitary articles comprising a; drying step of drying by applying a predetermined heat to the pulp raw material treated by the filtration process.

The pulp separation method of waste hygiene products according to the present invention as described above is a SAM dissociation agent in the pulp separation process including a macroscopic absorption suppression, washing process, crushing process, dissociation process, plastic separation process, filtration process and drying process. In order to increase the purity of pulp raw materials separated from waste hygiene products by presenting the dissociation process that specifies the dissociation agent activation conditions using the dissociation process and the aeration of the mixed dissociation process and the plastic separation process using the difference in the specific gravity of the components between the plastic and other pulp materials It is possible to obtain an effect that can reduce the time of dissociation process that takes the longest time in the pulp separation method and the effect.

The present invention relates to a method for separating pulp of waste hygiene articles for separating pulp from waste hygiene articles used after using sanitary articles such as wet tissue paper tissues or diapers made of pulp material including plastic and SAM.

Specifically, the absorption suppression and washing process of the present invention is a process treatment for preventing the SAM contained in the waste sanitary article from absorbing water and a process treatment for removing manure or garbage contained in the waste sanitary article, Absorption treatment is generally starch, cellulose or polyacrylic acid salt, polyvinyl alcohol, polyacrylamide and polyoxyethylene ( It is preferable to treat the absorption inhibitor mixture which suppresses the absorption of SAM composed of a synthetic resin system such as polyoxyethylene).

At this time, the absorption inhibitor mixture used in the absorption inhibitory treatment can be used a generally known absorption inhibitor mixture, the present invention is a water absorption inhibitor mixture or water 70 ~ 90% by weight of water mixed with a certain ratio and calcium chloride 30 ~ 10 It is preferable to use the absorption inhibitor mixed with the weight%.

Specifically, in the absorption inhibitor mixture, the absorption inhibitor in which water and the liver are mixed at a constant ratio is not known exactly how the liver acts on the SAM and inhibits the water absorption of the SAM, but it is generally several hundred times the weight of the SAM. By lowering the absorbency of the absorbent SAM, it is possible to obtain the effect of inhibiting the water absorption of the SAM to the water mixed with the waste sanitary products before the dissociation process. In addition, the salinity of the liver water is preferably at least 20% or more, and the ratio of water and the water is freely adjustable by those skilled in the art according to the adjustment of the absorption inhibition treatment time according to the ratio of the liver water as the absorption inhibitor.

In addition, the absorption inhibitor mixture in which water and calcium chloride are mixed in a constant ratio is used as an absorption inhibitor by using calcium chloride, which absorbs water and dissolves the high molecular SAM into a low molecular weight material, so that the SAM contained in the waste hygiene products is absorbed. It can be partially decomposed to lower the absorption.

That is, the present invention uses calcium chloride, which is a SAM dissociating agent that can be used to dissociate SAM in the dissociation process, as an absorption inhibitor, so that the SAM is decomposed into some low molecules in the absorption inhibition process, thereby suppressing the absorption of SAM. By reducing the amount of SAM dissociated in the dissociation process, it is possible to reduce the amount of SAM dissociation agent supplied to the dissociation process, or to reduce the dissociation process treatment time.

At this time, if the ratio of calcium chloride contained in the absorption inhibitor mixture is less than 10% by weight, the absorption inhibitory power to SAM is weak, and the waste hygiene product absorbs an excessive amount of water during the absorption inhibition and washing process due to SAM, and 30% by weight. If it exceeds the concentration of calcium chloride is too high to cause the problem of containing excessive amount of calcium chloride in the final pulp raw material, it is preferable to use an absorption inhibitor mixture having a ratio of 70 to 90% by weight of water and 30 to 10% by weight of calcium chloride. Do.

In addition, the washing process of the absorption suppression and washing process is a process for removing solid dirt that may be on the absorbent waste sanitary products as described above. In the method of washing dirt, any conventional washing treatment method may be used. In addition, according to the judgment of those skilled in the art, the washing treatment of the absorption inhibition and washing process may be performed before the absorption inhibition treatment. When the washing treatment is performed before the absorption inhibition treatment, it is obvious that the treatment is performed in a dry state without using water. The waste hygiene products in the case where solid dirt does not occur, such as poor waste hygiene products, may not be subjected to the washing treatment.

The shredding process of mixing the waste sanitary products treated by the absorption suppression and washing process into a predetermined amount of water and crushing them into a predetermined size is a pretreatment process of a dissociation process and a plastic separation process, which is performed below. It is a process for separating SAM from waste hygiene products and exposing SAM existing in the state of being wrapped in waste hygiene products made mainly of pulp to the outside from pulp.

In other words, the shredding process is carried out by introducing the waste hygiene products subjected to the absorption suppression and washing process into a hopper provided with a shredding impeller having a constant supply of water and having a predetermined rotational force, and then shredding the waste hygiene products to a predetermined size. do. At this time, the water supplied with the waste sanitary goods into the hopper reduces the frictional force of the waste sanitary products against the shredding impeller, and prevents the waste sanitary products being shredded out of the hopper due to the rotational force of the shredding impeller, According to the judgment of those skilled in the art can be appropriately adjusted according to the amount of the waste hygiene products to be shredded, and the size of the shredded waste hygiene products can be variously adjusted according to the judgment of those skilled in the art.

A predetermined amount of SAM dissociation agent is added to the waste hygiene product (hereinafter referred to as' crushed waste hygiene product) mixed with water and treated to disintegrate, and dissociates SAM contained in the waste hygiene product at a predetermined temperature. The dissociation process is a process for separating the pulp material and SAM by dissolving SAM contained in the shredded waste hygiene product in water.The commonly used SAM dissociation agent has been shredded waste hygiene product (a certain amount of water is mixed. Im.) May be used to separate the SAM from the waste sanitary articles, the present invention is a sodium hypochlorite aqueous solution containing 10 to 12% by weight of sodium hypochlorite in the waste sanitized article treated with the shredding process; A SAM dissociating agent, which is composed of 5 to 10% by weight of acetic acid, is mixed at a volume ratio of 1: 0.8 to 1.2, in an amount of 7 to 12 parts by weight based on 100 parts by weight of waste hygiene products in the absorption inhibition and washing process. More preferred.

Sodium hypochlorite (NaOCl) of the SAM dissociating agent is a strong chemical bond between polyamide epichlorohydrin (PAE) and pulp raw materials through the oxidation and halogenation of polyamide epichlorohydrin (PAE) in the SAM component It weakens and breaks down the high molecular weight SAM into low molecular weight materials so that the SAM can be dissolved in water.

At this time, the sodium hypochlorite aqueous solution preferably contains sodium hypochlorite at 10 to 12% by weight, when the composition ratio of sodium hypochlorite in the aqueous solution exceeds 12% by weight, there is a problem that the acidity is stronger, If less than 10% by weight because there is a problem that the dissociation rate is slow. In addition, the vinegar containing 5 to 10% by weight of acetic acid is more than 10% by weight of acetic acid, the acidity is stronger and the dissociation rate is slower than normal, if less than 5% by weight dissociation is not so good within the above range It is preferable to use what has acetic acid concentration.

In addition, the sodium hypochlorite aqueous solution and the vinegar has a volume ratio of 1: 0.8 ~ 1.2 and is preferably composed of SAM dissociation agent, when the volume ratio of the sodium hypochlorite aqueous solution and vinegar exceeds 1: 1.2, the acidity is It is preferable that the dissociation rate becomes strong, and if the ratio is less than 1: 0.8, the SAM may not be dissociated well.

In addition to the above, the SAM dissociating agent of the present invention may be substituted with sodium hypochlorite, and may be a conventional one mixed with vinegar containing acetic acid at an appropriate ratio.

In addition, in the dissociation process of the present invention, when the above-mentioned SAM dissociation agent is added to the waste sanitary article crushed in the state containing water, to dissociate SAM into water, in order to maintain the activation degree of the SAM dissociation agent excellently. Although it is preferable to control the temperature of a dissociation process process process, in this invention, it is more preferable to maintain a dissociation process in the temperature range of 20-30 degreeC. That is, the conventional method for separating pulp from waste hygiene products simply disposes a certain amount of SAM dissociating agent in the waste hygiene product that is crushed in the state of containing water of undetermined temperature. The long problem occurred, the present invention by adjusting the temperature during the dissociation process affecting the degree of activation of the SAM dissociation agent within the above range, to improve the degree of activation of the SAM dissociating agent to increase the dissociation rate of SAM, As a result, the treatment time of the dissociation process, which takes the longest time among the entire process of pulp separation treatment of waste sanitary products, was realized.

Specifically, the SAM dissociation agent of the present invention consisting of a sodium hypochlorite aqueous solution and a vinegar containing acetic acid, including a general SAM dissociating agent used as a SAM dissociating agent is activated at a higher temperature and at a more active rate with SAM, which is a dissociation target. It is possible to react, and the reaction rate with SAM improves the dissociation of SAM into water more quickly, thereby reducing the processing time of the dissociation process. In this case, the present invention is to heat the inside of the hopper containing the SAM dissociation agent and the shredded waste hygiene product incorporating the shredded waste hygiene product to a certain temperature, or mixed with the shredded waste hygiene product (water mixed Dissociation process treatment temperature can be constantly controlled by supplying water heated to a certain temperature. In connection with the above, if the temperature during the dissociation process treatment exceeds 30 ℃, the degree of activation of the SAM dissociating agent is improved, but excessive heat energy is applied to the pulp raw materials contained in the waste hygiene products and the pulp material may be denatured. Loss of productivity due to excessive energy loss for the generation of heat energy occurs, and if the temperature during the dissociation process is less than 20 ° C., dissociation to a temperature within the above range is because the activation contribution to the SAM dissociation agent due to temperature control is minimal. It is preferable to perform process treatment.

In another aspect, the present invention is the SAM dissociating agent input step of introducing a predetermined amount of the SAM dissociating agent into the water mixed with the crushed waste hygiene products; An aeration step of dissociating SAM by supplying a predetermined amount of air to the inside of the water mixed with the shredded waste hygiene product treated in the step of dissociating SAM; And a stationary step of stabilizing pulp raw materials by allowing the water mixed with the waste hygiene products shredded by the aeration step to be stabilized for a predetermined time; and the SAM included in the waste hygiene products subjected to the shredding process during the dissociation step. The effect of improving the reaction rate with the added SAM dissociation agent was realized.

That is, the dissociating agent input step is a general treatment step of injecting the SAM dissociating agent into the hopper in which the waste hygiene products subjected to the shredding process (in this case, the crushed waste hygiene products are impregnated in water, It is also possible to supply more water.), And the aeration step injects air into the water mixed with the shredded waste hygiene product in which the SAM dissociating agent is added for a predetermined time, so that the SAM inherent in the hopper and the SAM dissociating agent are added. The treatment step is to increase the number of collisions and to further activate the dissociation reaction, and the stationary step is a process step of releasing the dissociated SAM from the pulp material and stabilizing the pulp material.

In addition, the plastic separation process rotates and stirs the waste hygiene products subjected to the dissociation process, and separates the plastics equal to the water and the water from which the dissociated SAM and the pulp raw material are settled, using the specific gravity difference between the plastic and the pulp raw material. The process of separating plastics.

Specifically, the conventional pulp separation method for separating the pulp from the waste sanitary article is a large amount of SAM attached to the plastic because it is separated between the crushing process and the dissociation process of the plastic generally contained in the waste sanitary product about 10% by weight Because the plastic is not separated separately, a large amount of plastic component is contained in the manufactured pulp raw material, so a separate process for removing the plastic component from the dried pulp raw material is required, or a pulp raw material containing a large amount of plastic component is required. It is difficult to recycle as it is, the plastic separation process of the present invention is a crushing process and dissociation process, the effect that can be easily separated from the pulp raw materials as a specific gravity difference to the water separated from the pulp and SAM in the waste sanitary products And plastic dissociation process By treatment after, the effect is also achieved that enables more reliably remove the SAM that may be attached to plastic as compared to separate the plastic from the waste sanitary crushing treatment before the dissociation step.

In connection with the above, the plastic separation process of the present invention is continuously introduced into the hopper having a predetermined volume of water containing the disintegration process waste hygiene products, and stirred the water containing the waste hygiene products to By removing the plastic contained in the water to equalize the water contained in the containing water, and discharged the water containing the waste hygiene products in which the plastic is separated and dissociated and the SAM and pulp raw materials are mixed to the outlet configured under the hopper It can be processed.

In addition, the filtration process of the present invention is a process of filtering the pulp raw material only in the water in which the pulp raw material dissociated with SAM by treatment of the plastic separation process, and can be treated using a commonly known method such as filter filtration or suction filtration. .

In addition, the drying process is a process of drying by applying a predetermined heat to the pulp raw material obtained by the filtration process, can be processed by a general method using a means such as natural drying, hot air blower, oven or heat roller.

In connection with the above, the present invention, by immersing the pulp raw material subjected to the filtration process at least once in a certain amount of water to secondly wash the impurities that may be included in the pulp raw material and filtered again, it is possible to manufacture a pulp raw material further removed impurities In addition, according to the judgment of those skilled in the art, by treating with addition of various additives such as disinfectants, fragrances, sterilizers or preservatives during the second washing, it is possible to manufacture pulp raw materials with improved functionality.

The following is a preferred embodiment of the pulp separation method of the waste hygiene article according to the present invention according to the holding temperature during the dissociation step, the preferred embodiment of the pulp separation method of the waste hygiene article according to the present invention subjected to the aeration step during the dissociation step Example 4 and Comparative Example 1 by the pulp separation method of the conventional waste hygiene products.

1. Absorption inhibition and washing process

100 kg of baby waste diapers (Yuhan Kimberly) are immersed in a mixture of 160 kg of water and 40 kg of calcium chloride for 1 hour. (The washing process is omitted because manure and other wastes are not included.)

2. Shredding Process

1,000 liters of water is contained in the waste paper treated in the absorption restraint and washing process. After entering into the hopper, the impeller disposed in the center of the hopper is rotated to break up the waste diaper.

3. Dissociation Process

The water containing the crushed waste treated in the crushing process After being introduced into a hopper maintained at 20 ° C., a mixture of 10 kg of SAM dissociating agent (92 kg of aqueous sodium hypochlorite solution (Kara Chemical) containing 10.5 kg of sodium hypochlorite (Kara Chemicals) and 8 kg of vinegar containing 0.65 kg of acetic acid) was mixed. Ready for use, and let stand for 60 minutes to dissociate the SAM.

4. Plastic Separation Process

The dissociation process treated water containing the crushed waste paper is discharged in the lower one side, the lower center of the inner side is introduced into the hopper with an impeller, and then rotates the impeller to raise the plastic to the upper inside the hopper Take out the equalized plastic,

SAM is dissociated through the outlet provided at the lower side of the hopper and pulp raw material is settled to discharge the water. (At this time, the outlet introduction part inside the hopper constitutes a porous filter through which pulp raw materials can pass, thereby preventing unequal plastic from being discharged through the outlet.)

5. Filtration Process

The SAM is discharged to the outlet by the plastic separation process and the pulp material is sedimented and the pulp material is filtered in a filter equipped with a porous filter to separate the pulp material from the SAM dissociated water.

6. Drying process

The pulp raw material treated by the filtration process is formed into a mother board having a size of 120 × 90 × 2 in width × cm × cm × cm, and introduced into a hot air to which hot air is applied to dry the pulp material. Make.

All processes are processed in the same order as the pulp raw material preparation according to Example 1. In the dissociation step treatment, the hopper is maintained at 25 ° C. to manufacture pulp raw materials.

All processes are processed in the same order as the pulp raw material preparation according to Example 1. In the dissociation step treatment, the hopper is maintained at 30 ° C. to manufacture pulp raw materials.

1. Absorption inhibition and washing process and 2. Shredding process in the same order as the pulp raw material production according to Example 1,

3. Dissociation Process

1) After the water containing the crushed waste treated in the shredding process is introduced into the hopper maintained at 25 ℃, 10kg of SAM dissociating agent (92kg of sodium hypochlorite aqueous solution containing 10.5kg sodium hypochlorite and , Prepared by mixing 8 kg of vinegar containing 0.65 kg of acetic acid.

2) Discontinue SAM for 60 minutes while continuously injecting air through the air inlet provided on the lower side of the hopper.

3) The SAM in the treated hopper is dissociated and the pulp material is allowed to settle for 30 minutes.

The dissociation process is treated to dissolve SAM and pulp material is settled to process water in the same order as 4 to 6 of Example 1 to prepare a pulp raw material.

Comparative Example 1

1. Shredding process

After inserting 100 kg of infant waste paper (Yuhan Kimberly) into the grinder, the waste mill is crushed by rotating the grinder impeller.

2. Impregnation Process

1,000 grams of water contained in 100 kg of the crushed waste treated in the crushing process It is introduced into the hopper to moisten the waste paper.

3. Dissociation Stage

92 kg of sodium hypochlorite aqueous solution containing 10 kg of SAM dissociating agent (10.5 kg of sodium hypochlorite solution and 0.65 kg of acetic acid Prepared by mixing 8 kg), and allowed to stand for 120 minutes to dissociate the SAM.

4. Filtration Process

The SAM is discharged to the outlet by the plastic separation process and the pulp material is sedimented and the pulp material is filtered in a filter equipped with a porous filter to separate the pulp material from the SAM dissociated water.

5. Drying process

The pulp raw material treated by the filtration process is formed into a mother board having a size of 120 × 90 × 2 in width × cm × cm × cm, and introduced into a hot air to which hot air is applied to dry the pulp material. Make.

[Test]

Next, in order to measure the dissociation degree of the discarded diapers according to Examples 1 to 4 and Comparative Example 1, the pulp raw material dissociated SAM at the completion of each dissociation process according to Examples 1 to 1 and Comparative Example 1 Sampling was carried out to measure the undissociated fraction and Yeosu-do in the following manner to obtain the results shown in Table 1 below.

1. Measurement of undissociated fraction

The dissociated pulp material was measured on a Somerville screen with a slot size of 0.15 mm. After measuring the concentration of the prepared pulp raw material, put the dried fiber on the screen, pour tap water for 40 minutes, let the dissociated pulp raw material pass through the screen, and collect the undissociated fibers that did not pass through the screen to measure the content. The undissociated powder is represented by the ratio with the quantity of the added fiber.

2. Measurement of Yeosu

Before and after the screening by using a Canadian freeness tester (Canadian freeness tester) was measured in units of CSF ml according to TAPPI Standard T277 om-92.

division Dissociation process
Temperature (℃) Aeration at dissociation process Undissolved content (%) Yeosu
(Ml CSF) Example 1 20 × 0.6 298 Example 2 25 × 0.4 295 Example 3 30 × 0.2 290 Example 4 25 ○ 0.2 294 Comparative Example 1 15 × 8.3 378

[result]

The present invention, as shown in Table 1, the pulp raw materials prepared by Examples 1 to 3 compared with the pulp raw materials prepared by Comparative Example 1, by maintaining the temperature during the dissociation process at 20 ~ 30 ℃, Although the dissociation process time is short, it can be seen that the undissociated powder content was reduced, and Yeosu also decreased due to the decrease in undissociated powder content.

In addition, Example 4, in which a certain amount of air is injected into the water in which the SAM is dissociated during the dissociation process and the pulp raw material is settled, can improve the dissociation degree of the SAM even if the dissociation process has the same temperature as in Example 2. Can be.

The above has been described with reference to a preferred embodiment of the present invention, but is not limited to the above embodiment, the person having ordinary skill in the art to which the present invention pertains through the above embodiments without departing from the gist of the present invention Can be implemented in a variety of changes.

Claims (5)

In the pulp separation method of waste hygiene products having a pulp material comprising a plastic and super absorbent polymer resin (SAM),
An absorption inhibitor / washing step of impregnating the waste hygiene article with the absorption inhibitor mixture to suppress water absorption of the SAM and to wash the dirt in the waste hygiene article;
A shredding step of shredding the waste hygiene product subjected to the absorption suppression and washing process into a predetermined amount of water and then shredding it to a predetermined size;
A dissociation step of dissolving a SAM contained in the waste hygiene article at a predetermined temperature by adding a predetermined amount of SAM dissociation agent to the waste hygiene product mixed with the water and subjected to the crushing process;
A plastic separation process of rotating and stirring the dissociated waste hygiene product and separating water in which pulp material including SAM and plastic equal to water is settled;
A filtration step of filtering the pulp raw material only in the water in which the pulp raw material in which the SAM is dissociated is sedimented by the plastic separation process;
It comprises a; drying step of drying by applying a predetermined heat to the pulp raw material treated with the filtration step;
The pulp separation method of the waste hygiene article, characterized in that the predetermined temperature of the dissociation process is configured to be maintained within a temperature range of 20 ~ 30 ℃.
The method of claim 1,
The absorption inhibitor mixture,
The pulp separation method of the waste hygiene article, characterized in that the 70 to 90% by weight of water and 30 to 10% by weight of calcium chloride is mixed.
The method of claim 1,
SAM dissociation agent of the dissociation step,
Sodium hypochlorite aqueous solution containing 10-12% by weight sodium hypochlorite; Vinegar containing 5 to 10% by weight of acetic acid is configured to be mixed in a volume ratio of 1: 0.8 to 1.2,
The pulp separation method of the waste hygiene article, characterized in that configured to be added to 7 to 12 parts by weight of the SAM dissociating agent with respect to 100 parts by weight of the waste hygiene article of the crushing process.
delete The method of claim 1,
The dissociation step,
A SAM dissociating agent injecting a predetermined amount of SAM dissociating agent into the mixed water of the pulverized waste hygiene product;
An aeration step of dissociating SAM by supplying a predetermined amount of air to the inside of the water mixed with the shredded waste hygiene product treated in the step of dissociating SAM;
And a stationary step of stabilizing pulp raw materials by allowing the water mixed with the aerated step to be treated to be crushed to stand still for a predetermined time.