KR20240106469A - eco-friendly bag for landfill of livestock carcasses with excellent secondary pollution prevention and carcass decomposition performance - Google Patents

Abstract

According to the present invention, an eco-friendly bag for landfill of a livestock carcass with excellent secondary pollution prevention and carcass decomposition performance may comprise: a high density polyethylene (HDPE) woven film outer cover; a first linear low density polyethylene (LLDPE) film coating layer inside the HDPE woven film outer cover; a second LLDPE film coating layer outside the HDPE woven film outer cover; and a super absorbent polymer (SAP) nonwoven fabric inner cover coupled to the inside of the HDPE woven film.

Description

Eco-friendly bag for landfill of livestock carcasses with excellent secondary pollution prevention and carcass decomposition performance}

The present invention relates to an eco-friendly bag for landfilling livestock carcasses, and more specifically, to an eco-friendly bag for landfilling livestock carcasses that has excellent performance in preventing secondary pollution such as soil contamination, water contamination, and odor and in carcass decomposition performance.

Recently, due to rapid environmental and climate change, the number of cases in which livestock carcasses need to be urgently buried due to widespread infectious diseases in livestock continues to increase, and they are often buried in places with unclear safety, furthermore, they are buried in burial areas. In many places, management is poor, causing serious secondary damage such as soil contamination and groundwater contamination.

More specifically, buried livestock carcasses are anaerobically decomposed by microorganisms and biochemical reactions to generate gas and leachate. The generated gas and leachate decay by decomposers, generating a foul odor, and are decomposed by precipitation at the livestock burial site. Leachate, which is formed by moving water gathering underground, is highly concentrated organic wastewater and contains large amounts of nutrients such as nitrogen and phosphorus.

Therefore, such leachate may flow into the surrounding soil and contaminate the soil, and may flow into the surrounding groundwater or rivers, causing eutrophication of rivers and groundwater. There is a possibility that it may cause various environmental problems, such as contamination by pathogens. .

Accordingly, the technical problem to be solved by the present invention is to provide an eco-friendly livestock carcass landfill bag with excellent carcass decomposition performance and secondary pollution prevention performance such as soil contamination, water contamination, and odor.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

In order to solve the above technical problem, an eco-friendly livestock carcass burial bag with excellent secondary pollution prevention and carcass decomposition performance according to the present invention includes an HDPE (High Density Polyethylene) woven film outer shell; a first Linear Low Density Polyethylene (LLDPE) film coating layer inside the HDPE woven film shell and a second LLDPE film coating layer outside the HDPE woven film shell; And it may include a SAP (Super Absorbent Polymer) non-woven inner layer bonded to the inside of the HDPE woven film.

The first LLDPE coating layer preferably contains 5 w% to 10 w% of an anti-dropping agent, and the second LLDPE coating layer preferably contains no anti-dropping agent.

The first LLDPE film coating layer contains an antibacterial/deodorizing ingredient, but the second LLDPE film coating layer does not contain an antibacterial/deodorizing ingredient, and the SAP nonwoven lining contains a greater amount than the first LLDPE film coating layer. Antibacterial/deodorizing ingredients may be included.

The first LLDPE film coating layer may contain 5w% to 10w% of antibacterial and deodorizing ingredients.

The entrance of the bag for burying livestock carcasses may be closed with a zipper.

The eco-friendly bag for landfilling livestock carcasses according to the present invention can provide excellent secondary pollution prevention performance such as soil contamination, water contamination, and odor, and carcass decomposition performance.

Figure 1 is a flowchart showing a method of manufacturing an eco-friendly livestock carcass burial bag with excellent secondary pollution prevention and carcass decomposition performance according to the present invention.
Figures 2 to 5 are photographs showing the manufacturing processes of an eco-friendly livestock carcass burial bag with excellent secondary pollution prevention and carcass decomposition performance according to the present invention.
Figure 6 is a conceptual diagram illustrating an example of the structure of an eco-friendly bag 100 for burying livestock carcasses according to the present invention.
Figure 7 is a conceptual diagram illustrating another example of the structure of an eco-friendly bag 100 for burying livestock carcasses according to the present invention.
Figure 8 is a conceptual diagram illustrating another example of the structure of an environmentally friendly livestock carcass burial bag 100 according to the present invention.
Figure 9 shows a carcass decomposition tank 400 using an eco-friendly livestock carcass burial bag with excellent secondary pollution prevention and carcass decomposition performance according to the present invention.
Figure 10 shows a test preparation process using the carcass digestion tank 400 of Figure 9.
Figures 11 and 12 are antibacterial and deodorizing test reports for the fabric constituting an eco-friendly livestock carcass burial bag with excellent secondary pollution prevention and carcass decomposition performance according to the present invention.

In order to fully understand the present invention, its operational or functional advantages, and the objectives achieved by practicing the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in more detail with reference to the attached drawings. Since the present invention can be subject to various changes and can have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

While describing each drawing, similar reference numerals are used for similar components. In the attached drawings, the dimensions of the structures may be enlarged or reduced from the actual size for clarity of the present invention.

Terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may also be referred to as a first component. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Additionally, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Figure 1 is a flowchart showing a method of manufacturing an eco-friendly livestock carcass burial bag with excellent secondary pollution prevention and carcass decomposition performance according to the present invention.

The method of manufacturing the bag for burial of livestock carcasses includes the steps of weaving HDPE (High Density Polyethylene) flat yarn to manufacture an HDPE woven film shell (S100), and an LLDPE (Linear Low Density Polyethylene) film layer on the inner and outer sides of the HDPE woven film shell. A step of coating (i.e., forming first and second LLDPE film coating layers) (S110) and coating a SAP (Super Absorbent Polymer) nonwoven fabric on the LLDPE film on the inside of the HDPE woven film shell (S120). can do.

Figures 2 to 5 are photographs showing the manufacturing processes of an eco-friendly livestock carcass burial bag with excellent secondary pollution prevention and carcass decomposition performance according to the present invention.

Figure 2 (a) shows the process of manufacturing a 3.1 mm wide HDPE flat yarn stretched at a draw ratio of 7:1, and Figure 2 (b) shows the manufacturing process of the landfill bag according to the present invention using the HDPE flat yarn. It represents the process of manufacturing the HDPE woven film that makes up the shell.

Figure 3 shows examples of masterbatches for producing antibacterial LLDPE films. The antibacterial masterbatch may contain antibacterial and deodorizing ingredients such as zeolite and Paeonol, a wood bark extract. Figure 4 shows the process of coating or adhering the LLDPE film to the HDPE woven film.

Figure 5 shows the process of manufacturing a SAP non-woven fabric that absorbs moisture by being bonded to the inside of the LLDPE film coating layer inside the HDPE woven film in the landfill bag according to the present invention.

Figure 6 is a conceptual diagram illustrating an example of the structure of an eco-friendly bag 100 for burying livestock carcasses according to the present invention.

The livestock carcass burying bag 100 is used to bury livestock carcasses 300 due to infectious diseases, etc. in landfill soil 200. The bag 100 for burying livestock carcasses includes an HDPE woven film outer shell 110, a first LLDPE film coating layer 120, a second LLDPE film coating layer 130, a SAP non-woven inner shell 140, and a zipper 150. Includes.

The HDPE woven film shell 110 is woven with HDPE flat yarn to form the basis of the livestock carcass burying bag 100 and contributes to the strength and durability of the livestock carcass burying bag 100.

The first LLDPE film coating layer 120 and the second LLDPE film coating layer 130 coat the inside and outside of the HDPE woven film shell 110 to basically provide a waterproof function to the livestock carcass burial bag 100. Grants.

Since the first and second LLDPE film coating layers 120 and 130 are made of LLDPE, which is stronger than LDPE, they may partially contribute to the strength and durability of the livestock carcass burial bag 100. In other words, the reason for using the LLDPE film is that the bag 100 for landfilling livestock carcasses not only performs a waterproof function, but also can withstand friction with the landfill soil and a certain degree of external force or impact due to the nature of the landfill use. Because it has to be there.

The LLDPE film coating layers 120 and 130 are the same PE-based component as the HDPE woven film shell 110. Therefore, the first and second LLDPE film coating layers (120 and 130) can form a strong physical/chemical bond with the HDPE woven film shell (110), providing excellent waterproof performance to the livestock carcass burial bag (100). can do.

The SAP non-woven fabric lining 140 functions to prevent leachate from leaking out of the livestock carcass landfill bag 100. Leachate may be generated as livestock carcasses decay inside the livestock carcass landfill bag 100, and moisture may flow into the livestock carcass landfill bag 100 due to snow/rain.

The first LLDPE film coating layer 120 inside the HDPE woven film contains 5w% to 10w% of an anti-dropping agent. This is to prevent moisture generated inside the embedding bag 100 from condensing on the first LLDPE film coating layer 120 and to allow the moisture to be absorbed into the SAP nonwoven inner skin 140.

According to this moisture control mechanism, the waterproof function of the landfill bag 100 can be improved, and the durability of the landfill bag 100 can also be increased.

In the first LLDPE film coating layer 120, if the anti-dropping agent included is less than 5w%, the anti-dropping performance of the first LLDPE film coating layer 120 is too low and it is difficult to achieve the above purpose, and the anti-dropping agent included is 10w%. If the % is exceeded, the anti-dropping performance is improved, but durability in terms of strength may be lowered, so it is preferable that the included anti-dropping agent is limited to 5w% to 10w%.

Unlike the first LLDPE film coating layer 120, the second LLDPE film coating layer 130 preferably does not contain an anti-dropping agent. This is because strength and durability are more important than invulnerability performance in the second LLDPE film coating layer 130 that contacts/frictions with the landfill soil 200.

The first LLDPE film coating layer 120 may contain 5w% to 10w% of antibacterial/deodorizing ingredients. The reason why the content of antibacterial/deodorizing ingredients is limited in this way is to take into account antibacterial/deodorizing performance, strength, and durability like the anti-dropping agents discussed above.

In contrast, the second LLDPE film coating layer 130 may not contain antibacterial/deodorizing ingredients. This is because, in the case of the second LLDPE film coating layer 130, it constitutes the outermost layer of the landfill bag 100 and does not directly contact the livestock carcass 300, putrefactive gas, internal bacteria, etc., strength or durability. This is because it is preferable that it does not contain antibacterial/deodorizing ingredients that can reduce .

And the SAP non-woven fabric lining 140 may contain a greater amount of antibacterial/deodorizing ingredients than the first LLDPE film coating layer. This is because the main purpose of the SAP non-woven fabric lining 140 is to absorb leachate, so there is no need to consider strength and durability.

The zipper 150 is used to close the bag 100 for burying livestock carcasses. However, the zipper 150 can discharge a certain amount of gas generated as the livestock carcass 300 decomposes, so other finishing means such as a drawstring that tightly tightens the upper part of the livestock carcass burial bag 100 are applied. This allows the livestock carcass 300 to decompose more quickly than in the previous case.

Figure 7 is a conceptual diagram illustrating another example of the structure of an eco-friendly bag 100 for burying livestock carcasses according to the present invention.

The embedding bag 100 of FIG. 7 has a very similar structure to the example of FIG. 6, and differs only in the structure of the SAP non-woven fabric lining 140 and the way it is coupled to the first LLDPE film coating layer 120. Let's look at the characteristics of the landfill bag 100, focusing on the differences.

The SAP non-woven fabric lining 140 is coupled only to the side or side wall of the embedding bag 100, and the SAP non-woven fabric lining 140 is not coupled to the bottom of the embedding bag 100. And only a portion of the SAP nonwoven fabric lining 140 is coupled to the first LLDPE film coating layer 120 by the coupling means 160.

The coupling means 160 may be Velcro having a hook fixed or coupled to the first LLDPE film coating layer 120. At this time, the SAP non-woven fabric lining 140 may serve as an arm velcro in which a loop corresponding to the hook is formed.

Meanwhile, the coupling means 160 includes one of the female/male Velcro fixed to the first LLDPE film coating layer 120 and the other one of the female/male Velcro fixed to the SAP nonwoven fabric lining 140. It may be a combination.

The coupling means 160 may include various means such as adhesive, double-sided tape, or thermal bonding for fixing or combining the SAP nonwoven inner skin 140 and a portion of the first LLDPE film coating layer 120.

According to the structure in which the SAP non-woven fabric lining 140 is not located at the bottom of the embedding bag 100, and only a portion of the SAP non-woven fabric lining 140 is coupled to the first LLDPE film coating layer 120, The SAP nonwoven fabric lining 140 can be easily separated from the first LLDPE film coating layer 120 even in a moisture-absorbed state.

Therefore, in the landfill bag 100, the SAP non-woven fabric lining 140 that has absorbed the leachate can be removed and then other leachate absorbing means (e.g., another SAP non-woven fabric lining 140, an absorbent, a hygroscopic resin, etc.) can be added or added. Therefore, it can be very effective in preventing leachate outflow.

Figure 8 is a conceptual diagram illustrating another example of the structure of an environmentally friendly livestock carcass burial bag 100 according to the present invention.

The embedding bag 100 of FIG. 8 has a similar structure to the example of FIG. 7, and the only difference is with respect to the SAP nonwoven fabric lining 140, so we will look at the characteristics of the embedding bag 100 focusing on the differences.

In the example of FIG. 8, unlike the example of FIG. 7, the SAP non-woven fabric lining 140 is coupled to the bottom of the embedding bag 100, and the SAP non-woven fabric lining 140 is coupled as in the example of FIG. It is coupled to the first LLDPE film coating layer 120 by means 160.

Therefore, the SAP nonwoven inner skin 140 can be easily separated from the first LLDPE film coating layer 120. However, since the SAP non-woven fabric lining 140 is also coupled to the bottom of the landfill bag 100, ease of use may be lower than the example of FIG. 7 due to the weight of the livestock carcass 300 or soil.

In order to compensate for this disadvantage, the bottom portion of the SAP nonwoven fabric lining 140 may have a cut structure 170 or a structure 170 treated to facilitate cutting. The cutting structure 170 may be an optional component.

Figure 9 shows a carcass decomposition tank 400 using an eco-friendly livestock carcass burial bag with excellent secondary pollution prevention and carcass decomposition performance according to the present invention.

The carcass digester 400 has the sides and bottom of the frame 410 finished with an acrylic plate 420, and a leachate discharge valve 430 is installed at the bottom, and a landfill bag 100 according to the present invention is installed inside the carcass digester 400. ) was added to prepare it. The size of the body decomposition tank 400 is 30 cm, 30 cm, and 45 cm in width, length, and height, respectively, which corresponds to about 1/20 of a typical burial site.

Figure 10 shows a test preparation process using the carcass digestion tank 400 of Figure 9.

To prepare for the test, block gravel is placed inside the landfill bag 100 and then covered with soil (a), quicklime is laid on top (b), and about 15 kg of pork corresponding to a livestock carcass is placed on top of the quicklime (c). This is done by applying soil and quicklime again on top (d), then placing the sensor (e), and then putting final fill on top of it (f). The experiment was conducted for 12 weeks by closing the carcass digestion tank 400 with a cover.

As a result of the test, the temperature inside the carcass digester 400 was specified to be 15°C to 25°C, and the humidity was specified to be 20% to 30%, which is a state suitable for the activity of aerobic microorganisms for efficiently processing livestock carcasses. Meanwhile, the moisture generated during the internal decomposition process was absorbed by the soil and SAP nonwoven fabric lining 140 inside the carcass decomposition tank 400 and did not leak to the outside.

According to these experimental results, it can be seen that the landfill bag 100 according to the present invention is suitable for decaying or processing livestock carcasses and is effective in blocking leachate discharge.

Figures 11 and 12 are antibacterial and deodorizing test reports for the fabric constituting an eco-friendly livestock carcass burial bag with excellent secondary pollution prevention and carcass decomposition performance according to the present invention.

Referring to Figure 11, as a result of a test according to the JIS Z 2801: 2012 test method, it can be seen that the fabric has excellent antibacterial performance with a specific plasticity rate of 99.9% or more. And referring to Figure 12, as a result of a test according to the gas detection tube method performed by manufacturing the fabric in the form of a mask, it can be seen that the fabric has a deodorization rate of more than 99% after 60 minutes or more. According to these test results, it can be predicted that the bag for burying livestock carcasses according to the present invention manufactured using such a fabric will have excellent antibacterial/deodorizing performance.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited to the above embodiments, and various modifications and variations can be made from these descriptions by those skilled in the art. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the claims and equivalents thereof as well as the claims described later.

100: Bag for landfill of livestock carcasses 110: HDPE woven film lining
120: first LLDPE film coating layer 130: second LLDPE film coating layer
140: SAP non-woven lining 150: Zipper
200: landfill soil 300: livestock carcass
400: corpse digester 410: frame
420: Acrylic plate 430: Leachate discharge valve

Claims (5)

High Density Polyethylene (HDPE) woven film outer shell;
a first Linear Low Density Polyethylene (LLDPE) film coating layer inside the HDPE woven film shell and a second LLDPE film coating layer outside the HDPE woven film shell; and
An eco-friendly livestock carcass landfill bag with excellent secondary pollution prevention and carcass decomposition performance, comprising a SAP (Super Absorbent Polymer) non-woven fabric lining bonded to the inside of the HDPE woven film.
According to paragraph 1,
In the first LLDPE coating layer,
5w% to 10w% of anti-dropping agent is included,
In the second LLDPE coating layer,
An eco-friendly bag for landfilling livestock carcasses with excellent secondary pollution prevention and carcass decomposition performance, characterized by not containing anti-dropping agents.
According to paragraph 2,
The first LLDPE film coating layer contains antibacterial/deodorizing ingredients, but the second LLDPE film coating layer does not contain antibacterial/deodorizing ingredients,
An eco-friendly livestock carcass landfill bag with excellent secondary pollution prevention and carcass decomposition performance, characterized in that the SAP non-woven inner layer contains a greater amount of antibacterial/deodorizing ingredients than the first LLDPE film coating layer.
According to paragraph 2,
In the first LLDPE film coating layer,
An eco-friendly livestock carcass landfill bag with excellent secondary pollution prevention and carcass decomposition performance, characterized by containing 5w% to 10w% of antibacterial and deodorizing ingredients.
According to paragraph 2,
The entrance of the bag for burying livestock carcasses is,
An eco-friendly livestock carcass landfill bag that is closed with a zipper and has excellent secondary pollution prevention and carcass decomposition performance.

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