JP4362267B2 - Disassembling apparatus and disassembling method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a decomposing / removing apparatus and method for detrimental substances suitable for decomposing / removing detrimental substances (contaminants) such as organic chlorine compounds present in gas or mist, and a decomposing apparatus and decomposing method for substances.
[0002]
[Background]
There are often cases where organochlorine compounds used for cleaning machines and the like contaminate the soil at the site of a factory or the site of a cleaning shop. Since such organochlorine compounds are chemically stable, the treatment of contaminated soil has become a problem in recent years.
[0003]
Known methods for decomposing and removing organochlorine compounds include methods such as incineration, thermal decomposition, photodecomposition, oxidative decomposition, reductive decomposition, catalyst, and microbial decomposition. As another decomposition / removal method, an electrolysis method has been developed (Japanese Patent Publication No. 5-1078). The electrolysis method is a technique in which the surface of an electrode is changed to an oxidized or reduced state by energizing contaminated water containing an organochlorine compound, and the pollutant is decomposed by an oxidation-reduction reaction to make it harmless.
[0004]
[Problems to be solved by the invention]
However, in such a conventional electrolysis method, it is not possible to conduct electricity by inserting an electrode into a gaseous or mist-like organic chlorine compound extracted from contaminated soil. For this reason, there is a method in which a gaseous or mist-like organochlorine compound is absorbed in the liquid phase and then electrolyzed by energizing the liquid phase, but it is necessary to treat the liquid phase after absorbing the organochlorine compound separately was there.
[0005]
In addition, it is known that the higher the concentration of pollutants, the higher the electrolysis efficiency per unit quantity of electricity. However, when the liquid phase that has absorbed the organic chlorine compound is electrolyzed, the concentration decreases as the decomposition process continues, There was a problem that the decomposition efficiency per unit time decreased.
[0006]
The present invention solves the above problems, and does not separately treat a liquid phase that has absorbed harmful substances such as organochlorine compounds, and can also maintain a high decomposition efficiency, The present invention provides a method, a substance decomposition apparatus, and a decomposition method.
[0007]
[Means for Solving the Problems]
Decomposition apparatus according to the present invention includes a reservoir for storing the organochlorine compound, wherein the organochlorine compound organochlorine compound supply means for supplying to said reservoir, said reservoir said organic chlorine compounds in said reservoir A connection pipe that is lifted from the storage tank and circulated again in the storage tank, an electrolysis tank that is located in the connection pipe and is used for electrolyzing the lifted organic chlorine compound, and the organic chlorine compound in the electrolysis tank. And a storage section for transporting and storing a decomposition product generated by electrolysis, and in the electrolysis tank, plate-like electrodes are arranged perpendicular to the liquid flow .
[0008]
Further, the plate-like electrode may be provided with a hole for circulating the liquid flowing in the electrolysis tank .
[0011]
The connecting pipe lifts from the storage tank, and circulates the liquid containing the organic chlorine compound circulated in the storage tank and the gas containing the organic chlorine compound supplied from the organic chlorine compound supply means. It is good also as providing the gas-liquid contact part for making liquid contact in the said storage tank.
[0012]
Further, the connection pipe, when the electrolysis of the organic chlorine compounds may be characterized by being filled with a liquid containing the organic chlorine compounds lift from the reservoir.
[0014]
Also, the A electrode is a plate-like shape, and are arranged perpendicular to the flow of the liquid, a common perpendicular line drawn to each of the electrode surfaces, means that it is parallel to the direction of fluid flow. Here, “orthogonal” and “parallel” may not be “perfectly orthogonal” or “perfectly parallel”.
[0015]
The organochlorine compound may be at least one of monochloroacetic acid, dichloroacetic acid, and trichloroacetic acid.
[0016]
Further, the decomposition product may be chlorine .
[0017]
Furthermore, degradation process according to the present invention is a method of performing electrolysis of organic chlorine compounds be accomplished using any of the cracker, and supplying the organic chlorine compounds in the reservoir, of the inner storage vessel It said to lift the organic chlorine compounds from said reservoir, and conveying the step of circulating into the reservoir again, the electrolysis of step the organic chlorine compound, a decomposition product produced by electrolysis of the organic chlorine compounds A disassembling method including a storing step.
[0020]
Further, decomposition apparatus according to the present invention, and the contact portion having an interior space, said organic chlorine compounds incorporated in the liquid the interior space for the incorporation of organic chlorine compounds in the liquid in contact with the liquid a flow path for leading together with the liquid in different positions is located in the flow path, the electrolytic cell for electrolysis of the derived the organic chlorine compounds, Oite the organic chlorine into the electrolytic cell compound and means for introducing a liquid containing a product Deki been electrolyzed to said contact portion, in the electrolytic cell, characterized by placing the plate-shaped electrodes perpendicular to the flow of the liquid It is good also as a decomposition device.
[0021]
The plate-like electrode may be provided with a hole for allowing a liquid flowing in the electrolysis tank to flow .
[0022]
Also, it may be characterized by further including means for incorporating the medium prepared separately in a state where Oite the organic chlorine compounds in the electrolytic cell is cut off the product Deki is electrolyzed from the outside air.
[0023]
The medium may be a liquid material.
[0024]
The medium may be an adsorbent.
[0026]
The organochlorine compound may be at least one of monochloroacetic acid, dichloroacetic acid, and trichloroacetic acid.
[0027]
Further, the product may be chlorine.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows an apparatus and method for decomposing / removing organochlorine compounds (substances) as harmful substances according to the first embodiment of the present invention.
[0030]
In the figure, a gaseous or mist-like organochlorine compound is introduced into the gas-liquid contact type gas absorption tower 2 at a predetermined flow rate by the decomposition object supply means 1. For example, as shown in the figure, the absorption tower 2 is a hermetically sealed hollow shell structure, and includes an absorption liquid storage tank 3 in which an absorption liquid is stored at the lower part. The gas-liquid contact part 4 which consists of few fillings is incorporated, and the upper part of the gas-liquid contact part 4 serves as a spraying chamber 5 for spraying the absorbing liquid. The upper part of the spraying chamber 5 is connected to an absorption tower 7 as a secondary processing facility through an exhaust pipe 6.
[0031]
Here, examples of the gaseous or mist-like organochlorine compound include dichloromethane, carbon tetrachloride, 1.2-dichloroethane, 1,1-dichloroethylene, cis-1.2-dichloroethylene, 1.1.1-trichloroethane. 1.1.2-Trichloroethane, Trichloroethylene, Tetrachloroethylene, 1.3-Dichloropropene, Dioxin (Tetrachlorodibenzoleparadoxine), Tetrachloroethylene, and other harmful substances. It can be seen.
[0032]
Organochlorine compounds to be removed and decomposed include the above-mentioned harmful substances and the decomposition products of the above-mentioned harmful substances. For example, the present invention can be used for removing and decomposing haloacetic acids such as trichloroacetic acid, dichloroacetic acid, and monochloroacetic acid, which are known to be generated when a chloroethylene-based material is photolyzed.
[0033]
Dichloroacetic acid is generated in the photolysis of the trichloroethylene-contaminated gas. Although dichloroacetic acid is a liquid at room temperature, in a system where trichloroethylene contamination gas is continuously sent and photodecomposition is performed, the decomposition products exist in a mist state in the flow of the process gas.
[0034]
In addition, harmful substances to be decomposed supplied from the above-mentioned decomposition target substance supply means are harmful substances extracted from contaminated soil, contaminated groundwater, harmful substances obtained by aeration of contaminated water, and harmful substances adsorbed on activated carbon. It can be used for harmful substances released by the above, and harmful substances in exhaust gas from factories and chemical processes.
[0035]
The storage tank 3 stores water and an absorbing solution 8 that is an aqueous electrolyte solution such as sodium chloride dissolved therein, and a pair of positive and negative electrodes 9 in which the lower part is immersed in the absorbing solution are arranged to face each other. By applying a current DC-converted by the rectifier 10 to the electrode 9, the absorbing liquid 8 is electrolyzed, and the chlorine gas or other by-product gas isolated by the oxidation-reduction reaction is converted into the gas-liquid contact portion 4. Then, it moves to the absorption tower 7 side through the spraying chamber 5 and the exhaust pipe 6, where secondary treatment such as absorption of chlorine gas is continuously performed. The positive and negative electrodes 9 and the rectifier 10 constitute electrolysis means.
[0036]
The amount of current required for electrolysis is adjusted by the rectifier 10 according to the flow rate of the gas containing the organic chlorine compound supplied from the decomposition target supply means 1, the concentration of the organic chlorine compound, and the like. As a means for measuring the concentration of the organic chlorine compound, for example, a method of estimating from the concentration measured when the pollutant is absorbed from the soil, or providing a sensor in the absorption tower 2 can be considered.
[0037]
The absorption liquid 8 in the storage tank 3 is lifted by a circulation pump 12 disposed in the pipe 11 through a circulation pipe 11 (connecting pipe) and sprayed from the discharge means 13 on the upper part of the gas-liquid contact part 4 to be in contact with the gas-liquid. The organic chlorine compound is trapped from the gas flowing in from the decomposition target supply means 1 while flowing down the part 4 (introducing the organic chlorine compound into the absorption liquid) and flows down into the electrolytic solution tank 3, and the gas is passed through the circulation pipe 11. The cycle circulated on the liquid contact part 4 is repeated.
[0038]
The gas-liquid contact portion 4 is preferably one that keeps the gas-liquid contact time long. For example, a filler having a labyrinth (maze) structure (trade name: Try Bucks; manufactured by Sakai Kogyo Co., Ltd.) is used. The gas containing the organic chlorine compound introduced from the lower side of the gas-liquid contact part 4 is pushed out by the gas flowing in from the decomposition target supply means 1 toward the upper exhaust pipe 6 and is absorbed by the upper part of the gas-liquid contact part 4. By spraying the liquid 8, the absorbing liquid 8 is dropped while being dispersed inside, so that the absorbing liquid 8 and the organic chlorine compound-containing gas are in gas-liquid contact. Since the organic chlorine compound in the introduced gas has the property of being easily taken into the solution, the absorbing liquid 8 that has absorbed the organic chlorine compound flows down into the storage tank 3 while being dissolved in the absorbing liquid 8. In the gas-liquid contact part 4, the organic chlorine compound is brought into contact with the absorbing liquid because the gas containing the organic chlorine compound can be introduced with a small amount of energy and the gas-liquid contact time can be kept long. Because there is.
[0039]
Gases decomposed and generated by electrolysis are hydrogen, oxygen, chlorine, carbon dioxide gas, methane gas, etc., and these are continuously discharged to the absorption tower 7 side through the exhaust pipe 6. There is no gas accumulation in 2. Since the generated gas is difficult to be taken into water, it is considered that the gas-liquid contact portion 4 will not absorb the gas again. Further, the absorbed liquid 8 is sprinkled on the upper part of the gas-liquid contact part 4 by the sprinkling part 5, whereby the generated heat can be removed. Furthermore, since the absorption liquid 8 in the circulation pipe 11 is forcibly circulated by the circulation pump 12, there is no gas accumulation in the circulation pipe 11. On the other hand, the absorption tower 2 has a medium for taking in gas. The medium is, for example, liquid or adsorbent.
[0040]
According to the present embodiment, since all the solution that has absorbed the organic chlorine compound after electrolysis or after electrolysis is circulated and is not discharged out of the system from the gas-liquid contact type gas absorption tower 2, the treatment Is substantially unnecessary.
[0041]
That is, since this embodiment is performed in a system that is blocked from the outside air, the harmful substances generated in the decomposition process are not released to the outside and are safe. According to the Industrial Safety and Health Law, the permissible chlorine concentration in the air, such as workplace environmental management, is set at 0.5 ppm.
[0042]
Moreover, the absorption liquid 8 in the storage tank 3 that is electrolyzed while the organochlorine compound-containing gas is introduced into the gas-liquid contact type gas absorption tower 2 from the decomposition target supply means 1 at a predetermined flow rate is supplied by the circulation pump 12. Since it is circulated, absorption and electrolysis of organochlorine compounds can be performed continuously and simultaneously. That is, if the input current amount is set using the flow rate of the organic chlorine compound-containing gas introduced into the gas absorption tower 2 and the concentration of the organic chlorine compound in the gas, the concentration of the organic chlorine compound in the absorption liquid is increased. In other words, the concentration is kept high, and as a result, the electrolysis efficiency per unit current supplied from the rectifier 10 is always high. The relationship between the flow rate of the organic chlorine compound-containing gas introduced into the gas absorption tower 2 at this time, the concentration of the organic chlorine compound in the gas, and the amount of input current is, for example, the organic chlorine compound introduced into the gas absorption tower 2 Measure the contained gas flow rate and organochlorine compound concentration in the gas using a sensor, for example, create experimental table data showing the relationship between them and the input current amount, and set the input current amount based on the data .
[0043]
FIG. 2 shows a decomposition / removal device according to a second embodiment of the present invention, in which the positive and negative electrodes 9 are removed from the storage tank 3 ′ of the gas-liquid contact type gas absorption tower 2, while in the middle of the circulation pipe 11. Is provided with an electrolysis tank 20 and a pair of positive and negative electrodes 9 are provided in the electrolysis tank 20. Here, the positive and negative electrodes 9 are plate-like, and the common perpendicular of the opposing electrode surfaces is arranged in parallel with the direction of the flow of the liquid flowing in the circulation pipe 11, that is, the electrode surfaces are perpendicular to the flow of the liquid. At this time, a hole through which the liquid passes is formed in the electrode surface so that the electrode surface does not block the flow of the liquid. Other configurations are the same as those of the first embodiment, and in this embodiment, the same operational effects as those of the first embodiment can be obtained.
[0044]
In addition, in the circulation type apparatus, the decomposition target does not have to be completely decomposed, and therefore the liquid feeding speed can be increased. In particular, in the second embodiment, the surface of the electrode is washed with the flow rate. It is possible to remove air bubbles on the electrode surface and at the same time cool the electrode heat generated by electrolysis. On the other hand, the type of apparatus that does not circulate the absorbing liquid 8 has to decompose the object to be decomposed almost completely by electrolysis, requires a lot of energy, or has to delay the liquid feeding speed. To do.
[0045]
Moreover, in this embodiment, the electrolysis tank 20 and the storage tank 3 are provided separately. Those requiring maintenance such as positive and negative electrodes 9 for electrolysis are provided in the electrolysis tank 20 having a simpler structure, and therefore, by removing only the electrolysis tank 20 from the circulation pipe 11, Maintenance of the electrode 9 and the like can be easily performed.
[0046]
FIG. 3 shows a decomposition / removal apparatus according to a third embodiment of the present invention, which differs in that a pair of positive and negative electrodes 9 are provided directly in the circulation pipe 11 instead of the electrolysis tank 20. The electrode plates of the positive and negative electrodes 9 are arranged so that the common perpendicular of the surfaces thereof is perpendicular to the direction of the flow of the absorbing liquid 8, that is, the electrode surface is parallel to the direction of the flowing of the absorbing liquid 8. Other configurations are the same as those of the first embodiment, and the same effects as those of the second embodiment can be obtained in this embodiment.
[0047]
In addition, this invention is not limited to the said embodiment, For example, while arrange | positioning an electrode further in the storage tank 3 like 1st embodiment, or as shown in FIG. Instead, a pair of positive and negative electrodes 9 can be provided in the gas-liquid contact portion 4 (fourth embodiment). Moreover, while providing the electrolysis tank 20 in 2nd embodiment, a pair of positive / negative electrode 9 can also be provided in a circulation pipe. In the first or second embodiment, either of the positive and negative electrodes 9 may be connected to the shell of the gas-liquid contact type gas absorption tower 2 or the circulation pipe 11. Furthermore, it may have the configuration of the first embodiment and the second embodiment, or may have the configuration of the modification described in this paragraph. Furthermore, in any embodiment, the positive and negative electrode plates may be parallel or perpendicular to the flow of the absorbing liquid 8. In addition, for example, the positive and negative electrodes 9 may be configured by electrode wires, a negative electrode plate is stretched along the inner wall of the circulation pipe 11, and is coaxial and cylindrical in the center of the pipe 11. A positive electrode column may be provided.
[0048]
In any form, part or all of the gas generated by electrolysis by the electrode 9 is discharged from the absorbing liquid in the circulation pipe 11 into the gas separation chamber 5 (space) by the discharge means 13. At this time, most of the gas (vaporized decomposition product) generated by the decomposition is discharged through the exhaust pipe 6. The undecomposed substance to be decomposed in the absorbing liquid remains in the liquid as it is and is again subjected to electrolysis. That is, the substance to be decomposed is decomposed in the liquid to obtain a liquid containing the vaporized decomposition product, and the liquid containing the vaporized decomposition product is discharged into the space, and the vaporized decomposition product and the liquid part are separated. Separating.
[0049]
Moreover, in the said embodiment, although the gas-liquid contact type gas absorption tower 2 was employ | adopted, without providing the gas-liquid contact part 4, or with this, in the absorption liquid 8 stored in the storage tank 3, it is organic. By inserting an introduction pipe for the chlorine compound-containing gas, the organic chlorine compound can be directly absorbed by the absorbent 8.
[0050]
Furthermore, in the present specification, an organic chlorine compound is exemplified as a harmful substance. However, a substance that can be decomposed in the present invention is not limited to this, and may be involved in a redox reaction in addition to those described above. All things are included.
[0051]
【Example】
When the mist-like gaseous gaseous chlorine compound to be measured is dichloroacetic acid (DCA), the following concentration prediction is based on the theoretical formula for the measurement conditions and the relationship between the organic chlorine compound absorption rate and the amount of decomposition. went.
[0052]
<1. Conditions>
DCA generation rate Dμg / sec (constant)
Energizing time Tsec
DCA absorption volume VL
Initial DCA concentration C (0) μg / L
DCA concentration in solution after Tsec C (T) μg / L
DCA decomposition amount per unit quantity of electricity Rμg / c
[0053]
<2. When there is no electricity>
When DCA is absorbed without energization, the DCA concentration in the solution after Tsec is expressed by the following equation.
C (T) = (DT / V) + C (0) (1)
[0054]
<3. When energized>
The following relational expression was established for the amount of decomposition Rμg / c per unit quantity of electricity from the experiment (3.5 L desiccator, Cl concentration 0.1%).
R = 0.032 × {C (T) × 10−3} 0.88 (2)
When approximation is performed,
R = 6.14 × 10−3 × (C (T) × 10−3) (3)
Since the amount of decomposition during dTsec is R × dE = R × I (constant current) × dT, the following equation is obtained.
Decomposition amount = 6.14 × 10 −6 × C (T) × I × dT (4)
Since the amount of DCA generated during dTsec is D × dT, the concentration change dC during dT can be expressed by the following equation.
dC = (DdT / V) − (6.14 × 10 −6 × C (T) × dT) / V
dC / dT = D / V− (6.14 × 10 −6 × C (T) × I) / V (5)
Here, if D / V = a and (6.14 × 10 −6 × I) / V = b,
dC / dT = a−bC (T) = b ((a / b) −C (T)) = − b (C (T) − (a / b))
d (C (T)-(a / b)) / dT = dC (T) / dT- (d (a / b)) / dT = -b (C (T)-(a / b))
d (C (T)-(a / b)) / ((C (T)-(a / b)) =-bdT
Integrating both sides with T,
log (C (T) − (a / b)) = − bT + K where K: constant C (T) − (a / b) = e−bT + K = K1e−bT where K1: constant.
C (T) = (a / b) + K1e−bT.
Here, since the initial density (T = 0) is C (0),
K1 = C (0)-(a / b)
C (T) = (a / b) + (C (0) − (a / b)) e−bT (6)
Note that when T → ∞, convergence is made to C (∞) = (a / b) = D / (6.14 × 10 −6 × I).
[0055]
Next, when the electrolysis experiment was performed based on the above theory, the following results were obtained.
1. Experimental conditions Substances to be decomposed: Mist and gaseous dichloroacetic acid (DCA) in the air
Absorption rate: about 15μg / sec (with some fluctuations)
Absorbed liquid volume: 3L
Chlorine concentration in absorbing solution: 0.1%
Initial concentration: DCA initial concentration in the absorbing solution (concentration before energization of about 1000 mg / L)
Energizing condition: DC current 2A, voltage 20V
Electrode shape: Platinum electrode, plate shape (50cm2), distance between electrodes 3cm
System configuration: Configuration with electrodes inserted in the absorption tower (see Fig. 1)
[0056]
2. The experimental result is shown in FIG. From this figure, the DCA concentration in the absorbing solution increased and accumulated in the absence of energization, but the DCA concentration was always constant when energization was performed. Moreover, DCA was not recognized in the exhaust gas from the exhaust pipe 6 corresponding to FIG.
[0057]
【The invention's effect】
As is apparent from the above description, according to the decomposition apparatus and decomposition method for a decomposition target according to the present invention, a solution incorporating an organic chlorine compound that is a decomposition target is continuously processed while maintaining high decomposition efficiency. Can do.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a disassembling apparatus according to a first embodiment of the present invention.
FIG. 2 is an explanatory view of a disassembling apparatus according to the second embodiment.
FIG. 3 is an explanatory view of a disassembling apparatus according to the third embodiment.
FIG. 4 is a graph comparing the case of absorption only and the case of combination of absorption and electrolysis.
FIG. 5 is an explanatory view of a disassembling apparatus according to a fourth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Decomposition object supply means 2 Gas-liquid contact type gas absorption tower 3,20 Electrolyte tank 4 Gas-liquid contact part 5 Gas separation chamber 6 Exhaust pipe 7 Secondary processing equipment (absorption tower)
8 Absorbing liquid 9 Electrode 10 Rectifier 11 Circulating pipe 12 Circulating pump 13 Discharge means

Claims (14)

A storage tank for storing organochlorine compounds ;
An organic chlorine compound supply means for supplying the organic chlorine compound to the storage tank;
A connecting pipe for lifting the organochlorine compound in the storage tank from the storage tank and circulating it again in the storage tank;
An electrolysis tank located in the connecting pipe for electrolyzing the lifted organochlorine compound;
A storage unit for storing and transporting a degradation product caused by the electrolysis of the organic chlorine compounds in the electrolytic cell,
With
In the electrolysis tank, a plate-like electrode is disposed perpendicular to the liquid flow, and the organic chlorine compound decomposition apparatus. 2. The decomposition apparatus according to claim 1, wherein the plate-like electrode includes a hole for circulating a liquid flowing in the electrolysis tank. The connecting pipe is lifted from the storage tank, and the liquid containing the organic chlorine compound circulated in the storage tank and the gas containing the organic chlorine compound supplied from the organic chlorine compound supply means are in gas-liquid contact. decomposing apparatus according to claim 1 or 2 gas-liquid contact portion, characterized in that it comprises the said storage tank in order to. The connecting pipe, the decomposition apparatus according to claim 3, characterized in that said at electrolysis of organic chlorine compounds, is filled with a liquid containing the organic chlorine compounds lift from the reservoir. 5. The decomposition apparatus according to claim 1, wherein the organic chlorine compound is at least one of monochloroacetic acid, dichloroacetic acid, and trichloroacetic acid. The decomposition device according to claim 1, wherein the decomposition product is chlorine. A method of performing electrolysis of chlorinated organic compounds by using a decomposition apparatus according to any one of claims 1 to 6,
Supplying an organic chlorine compound to the storage tank;
Lifting the organochlorine compound in the storage tank from the storage tank and circulating it again in the storage tank;
And electrolysis of step the chlorinated organic compounds,
A step of storing and transporting a degradation product caused by the electrolysis of the organic chlorine compounds,
A decomposition method comprising: A contact portion having an internal space for bringing an organochlorine compound into contact with the liquid and taking it into the liquid;
A flow path for leading the organochlorine compound taken into the liquid together with the liquid to a position different from the internal space;
And electrolytic cell for located in said flow path, electrolyzing the derived the organic chlorine compounds,
It means for introducing a liquid containing a product Oite the organic chlorine compounds in the electrolytic cell is Deki been electrolyzed to said contact portion,
With
In the electrolysis tank, a plate-like electrode is disposed perpendicular to the liquid flow, and the organic chlorine compound decomposition apparatus. The decomposition apparatus according to claim 8, wherein the plate-like electrode includes a hole for circulating a liquid flowing in the electrolysis tank. According to claim 8 or 9, characterized by further comprising means for incorporating a medium prepared separately in a state in which Oite the organic chlorine compounds in the electrolytic cell is cut off the product Deki is electrolyzed from the outside air decomposition apparatus. The decomposition apparatus according to claim 10, wherein the medium is a liquid. The decomposition apparatus according to claim 10, wherein the medium is an adsorbent. The decomposition apparatus according to any one of claims 8 to 12, wherein the organochlorine compound is at least one of monochloroacetic acid, dichloroacetic acid, and trichloroacetic acid. The product, decomposing apparatus according to any one of claims 8 to 13, wherein the chlorine.

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