JP2008183500A - Waste liquid treatment kit and waste liquid treatment method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waste liquid treatment kit with the minimally simple constitution where treatment upon carriage or the like is facilitated, further, incineration treatment can be easily performed, further, treatment other than incineration such as reclamation is made possible, and, in its turn, contribution to environmental protection is made possible, and to provide a waste liquid treatment method. <P>SOLUTION: The waste liquid treatment kit 10 for treating the waste liquid of an automobile radiator liquid including ethylene glycol comprises: a water absorption polymer 11; and a plastic bag 12 as a storing means 12 for storing the water absorption polymer 11 absorbed with the waste liquid. The waste liquid of the radiator liquid is stored inside the plastic bag as the storing means 12, thereafter, the water absorption polymer 11 is charged and added thereto, and the waste liquid of the radiator liquid is solidified (gelled). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a waste liquid treatment kit and a waste liquid treatment method for treating a waste liquid of an automotive radiator liquid containing ethylene glycol.

  As a radiator solution for automobiles, generally, a mixture of LLC (long life coolant) with water is used to prevent freezing and anti-corruption. This LLC is a liquid mainly composed of ethylene glycol.

If such a radiator liquid is used for a long period of time, there is a risk of deterioration in rust and preservative ability, overheating, damage to the engine due to freezing of the radiator liquid, etc. Is common.
Since the original radiator liquid (hereinafter referred to as radiator waste liquid) generated by replacement contains ethylene glycol, which is an environmental pollutant, a container such as a drum can is used at a gas station or the like in order to prevent environmental pollution. After being temporarily stored, it is supposed to be incinerated at an incineration plant as industrial waste.

  By the way, the usage-amount of the radiator liquid per vehicle is about 7-8L, and contains 50% or more of moisture as a composition. As described above, since the radiator liquid contains a large amount of moisture, the large amount of moisture causes many problems when the radiator waste liquid is discarded.

That is, the treatment of the radiator waste liquid has the following disadvantages.
I. The radiator waste liquid must be incinerated by the waste treatment method, but it is not easily burned due to the large amount of water, and the contained water is not easy to evaporate with the heat in the incinerator. It is a fact. For this reason, the efficiency of the incineration work is reduced, and the incineration cost of the radiator waste liquid is inevitably high.
B. In general, 200 L drum cans are often used to store the radiator waste liquid. However, since the radiator waste liquid has a high density and is heavy, there are examples in which it is difficult to move the container. .
C. There is a restriction in securing a storage space for a 200 L drum can, and this tendency is particularly remarkable in an urban gas station.

  In addition, since the radiator waste liquid has a large amount of water, there is a problem that it is easy to dispose of it and easily put it into a sewage septic tank. A sewage septic tank in a gas station or the like generally does not have a function of converting LLC (ethylene glycol) contained in a radiator liquid into a non-polluting substance even if oil can be separated. For this reason, in consideration of the environment, there should be no discharge to the sewage septic tank.

  However, such radiator waste liquids are not subject to strict management of disposal, and may be thrown into sewage septic tanks installed at gas stations, etc. without being temporarily stored, or discharged into sewage, etc. There is.

  The present invention has been made in view of the above circumstances, and is easy to handle during transportation and incineration, and can also be disposed of other than incineration, such as landfill, and thus to protect the environment. It is an object of the present invention to provide a waste liquid treatment kit and a waste liquid treatment method that can contribute and have a simple structure.

  The waste liquid treatment kit of the present invention is a waste liquid treatment kit for treating a waste liquid of an automotive radiator liquid containing ethylene glycol, and includes a water absorbing polymer and a storage means for storing the water absorbing polymer that has absorbed the waste liquid. It is characterized by that.

The storage means is preferably a round-bottom polyethylene storage bag.
Moreover, it is preferable that the said water absorption polymer is 0.5 weight% or more with respect to a waste liquid.

The waste liquid treatment method of the present invention is characterized by including a step of adding a waste liquid of an automobile radiator liquid containing ethylene glycol to a water-absorbing polymer.
In this waste liquid treatment method, the concentration of ethylene glycol contained in the radiator liquid is preferably 50% by weight or less.

  The waste liquid treatment kit for treating a waste liquid of an automotive radiator liquid according to the present invention includes a water absorption polymer and a storage means for storing the water absorption polymer that has absorbed the waste liquid. For example, a radiator waste liquid is stored in the storage means. The water-absorbing polymer is charged into the container, and a simple operation of solidifying (gelling) in the storage means (polybag) is performed. Thereafter, the polymer can be handled as a solidified product. As a result, it is easy to handle during transportation, incineration is easy to perform, and disposal other than incineration, such as landfill, is possible, which in turn can contribute to environmental protection. A waste liquid treatment kit and a waste liquid treatment method can be provided.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1A and 1B show a radiator treatment kit which is an embodiment according to the waste liquid treatment kit of the present invention. The radiator treatment kit 10 according to the present embodiment is for treating a waste liquid of an automotive radiator liquid (hereinafter referred to as a radiator waste liquid), and has absorbed the water-absorbing polymer 11 and the radiator waste liquid in the treatment kit case 10A. A storage means 12 for storing the water-absorbing polymer 11 and an instruction manual 13 are stored. Note that 20 radiator processing kits 10 according to this embodiment are collectively stored in the processing kit box 20.

  The water-absorbing polymer 11 can be solidified in a gel form in several tens of seconds to several minutes when introduced into the radiator waste liquid. As the water-absorbing polymer 11, the same water-absorbing polymer as used in paper diapers, portable urine disposal devices, and the like is used.

The amount of water-absorbing polymer 11 used is usually about 1/100 of the water content. Therefore, the amount of the water-absorbing polymer 11 used in the radiator treatment kit 10 is preferably 0.5% by weight or more with respect to the radiator waste liquid, although it depends on the amount of water contained in the radiator waste liquid. More preferably, it is at least wt%.
Since the radiator waste liquid generated per ordinary vehicle is 7 to 8 L, in this embodiment, the water-absorbing polymer 11 corresponding to the amount (for example, 100 g) is contained in one bag.

  The water-absorbing polymer 11 is packed in a single bag 11A in a required amount. When the bag 11A is put together with the bag 11A, the adhesive portion of the bag is dissolved by the moisture contained in the radiator waste liquid, so that the water-absorbing polymer 11 inside is naturally exposed.

  The storage means 12 is used as a means for temporarily storing the radiator waste liquid, and is also stored when the water-absorbing polymer 11 is poured into the stored radiator waste liquid to solidify it into a gel and then discarded. It is also used for purposes. For these reasons, a polyethylene storage bag (hereinafter referred to as a plastic bag) is used as the storage means 12 of the present embodiment.

  For example, as shown in FIG. 2A, the plastic bag has a closed bottom that is rounded. In addition, the plastic bag as the storage means 12 has a narrow portion for closing the bag (hereinafter referred to as “the bag”) in order to prevent the waste liquid from the radiator and the water absorbing polymer 11 from dropping into the outside after being put inside. A plurality of (closed portions) 12A are formed.

  When this plastic bag whose shape can be freely deformed is used as the storage means 12, for example, when the radiator waste liquid is put into this, it is necessary to hold the opening portion of the upper part of the plastic bag in an expanded state. Thus, the plastic bag is set in advance in a shape-invariable container (for example, a pail can) such as a metal container (not shown).

  In this case, for example, a plastic bag as the storage means 12 is formed in a spherical shape so that the bottom is rounded. The reason why the bag is formed in this way is as follows. That is, as shown in FIG. 2B, when the bottom of the plastic bag 14 is formed in a quadrangle, the corner corner 14A of the bottom is pushed and spread by its own weight when the radiator waste liquid is introduced. It will protrude and will become the shape where corner part 14A was rounded. As a result, when the water-absorbing polymer 11 is introduced, it is solidified as it is, and when it is taken out from the container in which the plastic bag is stored, it is broken or difficult to take out. On the other hand, when the bottom portion is formed round as shown in FIG. 2A, corners are not formed at the bottom portion when the radiator waste liquid is added, and there is no possibility of breakage of the bag or the like.

  In addition to the plastic bag of this embodiment, for example, a small metal container or a plastic container, or a special paper that does not allow moisture to penetrate into the storage means 12 depends on the disposal method. Alternatively, a bag formed of a nonwoven fabric or the like may be used.

  The instruction manual 13 makes it possible to easily and reliably perform the treatment of the radiator waste liquid using the radiator treatment kit 10 even if it is a beginner who performs the treatment of the radiator waste liquid. The process is clearly described.

When the method of processing the waste liquid using the radiator processing kit 10 according to the present embodiment is described, as shown in FIG.
(A) A plastic bag as the storage means 12 is set in an empty pail can 15 with the opening portion widened.
(B) Thereafter, the radiator waste liquid 16 is put into a plastic bag.
(C) Next, the water-absorbing polymer 11 is charged and added into a plastic bag containing the radiator waste liquid 16.
(D) Then, the mixture is well stirred to gel (usually gels in several tens of seconds to several minutes).
(E) Next, after tightly connecting the closing portion 12A, it is taken out from the pail can 15.

  Thus, the solidified radiator waste liquid 16 can be subjected to appropriate treatment (for example, incineration, landfill, storage, etc.) designated by each local government as industrial waste as waste plastics and the like. is there.

  By the way, although the processing method of the radiator waste liquid using the above water absorption polymers has not been performed until now, the reason is that the radiator liquid has a configuration in which LLC (ethylene glycol) and water are mixed as described above. Of these, the fixed idea that ethylene glycol does not solidify with the water-absorbing polymer has permeated, so it is estimated that the idea of solidifying the radiator waste liquid with the water-absorbing polymer has never occurred.

However, the inventor according to the present invention repeatedly conducted various tests and found that the radiator liquid can be solidified if the water content is 50% by weight or more, that is, the LLC component is 50% by weight or less. . Incidentally, the water content of the radiator waste liquid is approximately 50 wt% to 80 wt%.
For this, see Table 1 below showing the experimental results.

  In extremely cold regions, LLC may be used at a concentration of 50% by weight or more (moisture is less than 50% by weight). In that case, before the step (C) of adding the water-absorbing polymer, water may be appropriately added to the radiator waste liquid so that the water is adjusted to 50% by weight or more.

  In addition, as shown in Table 1, when LLC is 50% by weight or more, the gelled state is obtained by heating the gelled with 2.0% water-absorbing polymer at room temperature at 70 to 80 ° C. for about 2 hours. It was confirmed that there was almost no change. This is considered that the gelled state can be maintained without returning to a liquid state even when left outdoors such as in summer.

The gelation mechanism used in the waste liquid treatment according to the present invention is estimated as follows.
As shown in FIG. 4A, it is estimated that the radiator waste liquid itself is in a state where ethylene glycol is dissolved in water and water molecules and ethylene glycol molecules coexist.
When the water-absorbing polymer 11 is added to the radiator waste liquid in this state, the water-absorbing polymer 11 intrudes into the water molecules and expands and solidifies (gels) (see FIG. 5B).
Here, the inventor further confirmed a valuable phenomenon. That is, it was confirmed that the gelated radiator waste liquid evaporates in a dry atmosphere, and even if the drying progresses, only the jelly particles become small and ethylene glycol is not separated and re-liquidated (see FIG. 3C). ). This is considered that the radiator waste liquid is in a polymerized state.
Based on the above knowledge, the inventors of the present application have come up with the idea that this property (phenomenon) can be applied to the disposal of radiator waste liquid.

Therefore, according to the present embodiment, the following effects can be obtained.
i) Since the radiator waste liquid is solidified (gelled), it can be stored in various containers. That is, the types of containers to be stored are expanded, and it is possible to use, for example, a small metal container or a plastic container in addition to the plastic bag as in the present embodiment.
ii) Easy to move radiator waste. That is, by solidifying (gelling), there is no risk of liquid leakage to the outside, and a conventional management method using a large and heavy metal container such as a drum can can be avoided. In other words, since it is possible to store in small portions freely, moving work such as transportation becomes easy.
iii) Solidification (gelation) of the radiator waste liquid makes it easy to treat it as industrial waste. In other words, according to the “Industrial Product Disposal Law”, incineration is obligatory if the radiator waste liquid remains as it is, but if it is solidified (gelled), the legally designated “managed landfill” will be used. This will increase the options for disposal of industrial waste. It also greatly contributes to the reduction of industrial waste disposal costs.

  iv) Further, even if the vehicle has a slightly different displacement, in the case of a normal vehicle or the like, the amount of radiator waste liquid generated per vehicle is approximately 7 to 8 L. (However, there is a possibility that the amount of generation is extremely different between a large vehicle and a light vehicle.) Therefore, in this embodiment, as shown in FIG. 1, a 20-unit radiator processing kit 10 is stored together. From the kit box 20, it is possible to process the radiator waste liquid using one radiator processing kit 10 per vehicle.

  Thus, if the radiator waste liquid processor is customarily adapted to take out one radiator processing kit 10 from the processing kit box 20 for each vehicle every time the radiator liquid is replaced, the processing operation of the radiator waste liquid is performed. As part of this, it becomes possible to make a habit of performing this solidification work, and the concern about environmental pollution such as forgetting the solidification work and discarding the liquid radiator waste liquid as it is is eliminated.

The present invention is not limited to the above-described embodiments, and can be implemented in various forms without departing from the scope of the invention.
That is, the treatment kit 10 shown in FIG. 1 has a form in which the water absorption polymer 11 and the storage means 12 (polybag) are accommodated one by one in the treatment kit case 10A, but in a gas station or the like that performs a dedicated treatment of the radiator waste liquid. It is convenient to use a large processing kit provided with a plurality of water-absorbing polymers 11 and storage means 12 in the processing kit case. For example, in the large processing kit 30 shown in FIGS. 5 (A) and 5 (B), the inside of the processing kit case 30A is divided into two, and a large number of water-absorbing polymers 31 and rolls as storage means 32 in each space. A large number of plastic bags wound around are accommodated. A perforation 30B is provided on the surface of the processing kit case 30A so that the processing kit case 30A can be easily taken out from both sides.

  Moreover, in this invention, you may make it provide the means which can measure the density | concentration of ethylene glycol in a radiator waste liquid easily. In addition, in order to confirm the moisture contained in the radiator waste liquid, a test paper formed by impregnating an appropriate reagent is enclosed in the radiator treatment kit 10 together, and the solidified radiator is provided. You may make it finally confirm the solidification state of a waste liquid. Furthermore, what printed the scale etc. which show the suitable amount of radiator waste liquid with respect to the whole quantity of the water absorption polymer 11 accommodated in the bag on the surface of the plastic bag etc. which are the accommodating means 12 may be used.

  The waste liquid treatment kit and waste liquid treatment method of the present invention can be used in a wide variety of industrial fields related to various vehicles such as a car shop, a home center, and a car repair factory, as well as a gas station for replacing radiator waste liquid. Therefore, it is possible to effectively avoid the radiator waste liquid that has been illegally discarded so far, such as being discarded as it is, and the contribution to the waste industry can be greatly expected. A dramatic contribution in terms of protection can be expected.

(A) is the schematic which shows the waste liquid processing kit and processing kit box which concern on this embodiment. (B) is the schematic which abbreviate | omitted the process kit case of the waste-liquid process kit shown to (A). (A) is the schematic which shows an example of the accommodating means of the waste-liquid processing kit which concerns on this embodiment, (B) is explanatory drawing which shows the plastic bag with which the bottom part corner was rounded. It is explanatory drawing which shows the processing method using the waste-liquid processing kit which concerns on embodiment of this invention. It is explanatory drawing which shows the principle of the waste-liquid processing method which concerns on this invention. (A) is the external appearance perspective view which shows the large sized waste liquid processing kit which concerns on this embodiment, (B) is the perspective view which abbreviate | omitted the processing kit case of the waste liquid processing kit shown to (A).

Explanation of symbols

10 Radiator treatment kit 10A Treatment kit case 11 Water-absorbing polymer 11A Bag 12 Storage means (polybag)
12A Closure 12B String 13 Instruction Manual 15 Pail Can 16 Radiator Waste 20 Treatment Kit Box 30 Large Treatment Kit

Claims (5)

  A waste liquid treatment kit for treating a waste liquid of an automotive radiator liquid containing ethylene glycol, comprising: a water absorption polymer; and a storage means for storing the water absorption polymer that has absorbed the waste liquid. .   2. The waste liquid treatment kit according to claim 1, wherein the storage means is a round-bottom polyethylene storage bag.   The waste liquid treatment kit according to claim 1 or 2, wherein the water-absorbing polymer is 0.5% by weight or more based on the waste liquid.   A waste liquid treatment method comprising a step of adding a water-absorbing polymer to a waste liquid of an automobile radiator liquid containing ethylene glycol.   The waste liquid treatment method according to claim 4, wherein the concentration of ethylene glycol in the radiator liquid is 50% by weight or less.

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