KR100564055B1 - Apparatus for Hybrid Mediated Oxidation of Destroying Organic Wastes by Electrochemical and Ozone Oxidation - Google Patents

Abstract

The present invention relates to an apparatus for treating complex mediated oxidation of organic waste liquid by electrochemical mediated oxidation and ozone oxidation, comprising: a mediated oxidation reactor (10) in which organic waste liquid is electrochemically mediated by mediated ions; Reaction of the unreacted organic waste liquid of the mediated oxidation tank 10 with electrochemical mediated oxidation by mediated ions and oxidation using ozone generated from the ozone generator 50 and oxidizing the mediated ions with reduced ozone The complex oxidation tank 20 is carried out; The cathode chamber 32 which receives electrons from the anode chamber 31 and the anode chamber 31 in which the reduced mediated ions introduced from the complex oxidation reactor 20 are oxidized by the current from the rectifier 34. And an electrolysis cell 30 provided with a diaphragm 33 between the anode chamber 31 and the cathode chamber 32; A reduction and regeneration tank for oxidizing the reduced catholyte flowing out from the cathode chamber 32 by contacting ozone or oxygen supplied from the ozone generator 50 and introducing the reduced catholyte into the cathode chamber of the electrolytic cell 30 again. It is characterized by consisting of 40.

The apparatus according to the present invention increases the oxidation efficiency of the organic waste liquid by using an electrochemical mediated oxidation and ozone oxidation simultaneously and by applying an integrated scrubber type oxidation tank, thereby efficiently treating the highly degradable high concentration organic waste liquid and simplifying the apparatus. Initial equipment investment costs and ease of operation has the effect.

Organic waste, electrochemical, ozone, mediated ion, scrubber, electrolytic cell, cerium, silver

Description

Apparatus for Hybrid Mediated Oxidation of Destroying Organic Wastes by Electrochemical and Ozone Oxidation             

Figure 1. Schematic diagram of the complex mediated oxidation process according to the present invention.

Figure 2 is a block diagram of the complex mediation process according to the present invention.

3. Apparatus process diagram of the complex mediated oxidation process according to the present invention.

-Explanation of symbols for the main parts of the drawings-

10: mediated oxidation reactor 11: liquid phase oxidation reactor

14, 44: jacket 15, 41: scrubber

16: reflux 20: complex oxidation reactor

30: electrolytic cell 31: anode chamber

32: cathode chamber 33: diaphragm

34: rectifier 40: reduction and regeneration tank

43: diffuser 50: ozone generator

51: organic waste liquid pump

The present invention relates to a complex mediated oxidation treatment apparatus for organic waste by electrochemical mediated oxidation and ozone oxidation.

Recently, organic wastewater is generated in various chemical processes, and organic waste liquids are incinerated and removed or oxidized and removed by an electrochemical method.

However, incineration of organic waste liquids causes a high cost of maintenance due to corrosion of the incinerator, and also generates secondary pollutants such as dioxins and nitrogen oxides during incineration. There are many difficulties in securing it.

In addition, as environmental standards for waste treatment have been strengthened, much attention has been paid to the treatment of organic waste liquid.

U.S. Patent No. 5,420,088 discloses a method of using cerium ions in an electrochemical cell as a method of recovering a catalyst material from a waste solid catalyst material, which is applied to the oxidation treatment of organic waste liquid. / 38943 describes the treatment of organic waste liquid through electrochemical mediated oxidation using mediated ions which add high concentrations of cerium ions to the anolyte mixed with an ultrasonic mixer and oxidize organic substances in the anolyte using an electrochemical cell. Although a process is known, the process has a disadvantage in that there is a limitation in the sufficient oxidation reaction of the organic waste liquid because the gas-liquid oxidation reaction is not sufficient.

Recently, International Patent Publication No. 99/28239 converts organic waste into carbon dioxide and water through the mediated oxidation reaction of organic waste using the oxidizing power of cerium tetravalent by adding cerium tetravalent cation to the emulsion state of water and acid. Although the process of making this process is disclosed, this process is disadvantageous in that there are many problems in the maintenance and operation of the device as well as the initial investment cost due to too many device configurations.

An object of the present invention for solving the above problems is to decompose the organic waste liquid by using electrochemical mediated oxidation and ozone oxidation at the same time to reduce the mediated ion during the mediated oxidation process using the ozone By applying the integrated scrubber type oxidation tank, the oxidation efficiency of the organic waste liquid can be increased to efficiently treat the highly degradable organic waste liquid and the amount of mediation ion to be oxidized in the electrolytic cell is reduced. Is simplified to provide an environmentally friendly treatment apparatus and method with initial equipment investment costs and ease of operation.

The present invention relates to an apparatus for treating complex mediated oxidation of organic waste liquid by electrochemical mediated oxidation and ozone oxidation, and in detail, simultaneously using electrochemical mediated oxidation and ozone oxidation and reducing the mediated oxidation process using the ozone. The present invention relates to a complex mediated oxidation treatment apparatus capable of carrying out a reaction to oxidize the mediated ions, and to efficiently treat hardly degradable high concentration organic waste liquid by increasing the oxidation efficiency of the organic waste liquid by applying an integrated scrubber type oxidation reactor. As an apparatus according to the present invention, an organic waste liquid is an intermediate oxidation reaction tank 10 in which electrochemical mediated oxidation is performed by mediated ions; The unreacted organic waste liquid of the mediated oxidation tank 10 is oxidized by electrochemical mediated oxidation by the mediated ions and ozone generated from the ozone generator 50 and at the same time, the reaction of oxidizing the mediated ions with reduced ozone is performed. A complex oxidation reaction tank 20; The cathode chamber 32 which receives electrons from the anode chamber 31 and the anode chamber 31 in which the reduced mediated ions introduced from the complex oxidation reactor 20 are oxidized by the current from the rectifier 34. And an electrolysis cell 30 provided with a diaphragm 33 between the anode chamber 31 and the cathode chamber 32; A reduction and regeneration tank for oxidizing the reduced catholyte flowing out from the cathode chamber 32 by contacting ozone or oxygen supplied from the ozone generator 50 and introducing the reduced catholyte into the cathode chamber of the electrolytic cell 30 again. It is characterized by consisting of 40.

As the ion used as the medium ion, a transition metal or a transition metal compound is suitable, and at least one selected from Ce ⁴⁺ , Ag ²⁺ , Co ³⁺ , and Mn ³⁺ is preferable. In Ce ⁴⁺ , Ag ²⁺ is more preferable, and Ce (NO ₃ ) ₄ is most preferable as the compound of Ce ⁴⁺ ion. The mediated ions are dissolved in nitric acid or sulfuric acid aqueous solution to oxidize the organic waste liquid by mediated oxidation reaction, and then reduced. The mediated ions are oxidized by electrochemical method in the anode chamber 31 of the electrolytic cell 30 and circulated again. The concentration of the mediated ion is 0.5M to 1.6M, preferably 0.8M to 1.5M.

In the cathode chamber 32 of the electrolytic cell 30, the catholyte is reduced simultaneously with the oxidation of the intermediate ion in the anode chamber 31, and the catholyte solution is preferably HNO ₃ or H ₂ SO ₄ aqueous solution.

At this time, the temperature of the intermediate oxidation reaction is performed at room temperature to 100 ° C, preferably 70 ° C to 100 ° C, and the operating temperature of the catholyte is preferably room temperature to 70 ° C.

Hereinafter, the configuration and the operation of the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view of the apparatus of the complex mediated oxidation process according to the present invention, FIG. 2 is a schematic diagram of the apparatus of the complex mediated oxidation process according to the present invention, and FIG. 3 is a process diagram of the complex mediated oxidation process according to the present invention.

Oxidation reaction of organic waste in the complex mediated oxidation treatment apparatus of organic waste liquid by electrochemical mediated oxidation and ozone oxidation according to the present invention is carried out by the organic waste liquid introduced by the organic waste liquid inlet pump 51 from the organic waste liquid storage tank. The electrochemical mediated oxidation reaction and ozone generator by the mediated ions of the unreacted organic waste liquid introduced by the overflow from the mediated oxidation reaction tank 10 and the upper portion of the mediated oxidation reaction tank 10 to perform the electrochemical mediated oxidation reaction ( The oxidation reaction using ozone generated from 50) is simultaneously performed, and the process in which the mediated ions reduced in the intermediate oxidation reaction in the intermediate oxidation reaction tank 10 and the complex oxidation reaction vessel 20 is oxidized again by ozone is combined oxidation. It takes place in the reactor (20).

The mediated oxidation reaction tank 10 is located at the upper end of the liquid oxidation reaction tank 11 and the liquid oxidation reaction tank 11 which mediates the introduced organic waste liquid by mediation ions from the anode chamber 31 of the electrolytic cell 30. The scrubber 15 for mediating the gas generated from the liquid oxidation reactor 11 and the complex oxidation reactor 20 by flowing out of the mediated ion is introduced, and a reflux machine 16 is provided on the top of the scrubber 15. , The intermediate oxidation reaction occurs quickly at high temperature, so the intermediate oxidation reaction tank 10 is provided with a jacket 14 capable of temperature control.

The organic wastewater flowing into the liquid phase oxidation tank 11 of the mediated oxidation tank 10 and the mediated ions introduced into the scrubber 15 located on the top of the liquid phase oxidation tank 11 are mixed directly so that the mediated oxidation reaction occurs. The medium ion inlet tube 13 is provided from the bottom of the liquid phase reaction tank 11 to the bottom of the liquid oxidation reactor 11, and an ultrasonic mixer is provided at the bottom of the liquid oxidation reactor 11 in which the organic waste liquid and the medium ions are mixed. The ions are sufficiently mixed to allow the mediated oxidation to occur.

The intermediate ion concentration measuring unit (17) is provided with a medium ion concentration measuring unit (17) for measuring the degree of reduction of the medium ion in a line overflowing the upper portion of the liquid phase oxidation tank (11) and flowing into the complex oxidation tank (20). By measuring the ratio of the cation of the mediated ions and the reduced mediated ions in the mediated ion measured in this to control the organic waste liquid inlet pump 51 to maintain the appropriate mediated oxidation of the mediated oxidation tank (10) .

The mediated ions flowing out of the anode chamber 31 of the electrolysis cell 30 are introduced into the complex oxidation reactor 20 together with the effluent containing the mediated ions overflowing from the upper portion of the liquid oxidation reactor 11 and the unoxidized organic waste solution. And an acid pipe 21 for diffusing ozone introduced from the ozone generator 50 so that oxidation of the organic waste liquid by ozone and oxidation of the mediated ion are efficiently performed at the lower end of the complex oxidation reaction tank 20. Is provided.

The gas generated in the complex oxidation reaction tank 20 flows out from the top of the complex oxidation reaction tank 20 and flows out of the upper end of the liquid oxidation reaction tank 11 of the intermediate oxidation reaction tank 10. It flows into the bottom of the scrubber 15 located at the top.

The electrolytic cell 30 includes an anode chamber 31 and an anode chamber in which the reduced mediated ions introduced by the feed pump 52 are oxidized from the lower end of the complex oxidation reactor 20 by the current from the rectifier 34. 31 is provided with a cathode chamber 32 to receive the electrons from the cathode to reduce the catholyte solution and a separator 33 between the anode chamber 31 and the cathode chamber 32, the membrane of the electrolytic cell 30 is hydrogen ion The porous diaphragm which can move from this anode chamber 31 to the cathode chamber 32 is preferable.

As mentioned above, the mediated ions oxidized in the cathode chamber 31 are introduced into the upper end of the complex oxidation reaction tank 20 and supplied to the top of the scrubber 15 of the intermediate oxidation reaction tank 10, and the complex oxidation reaction tank 20 A flow meter 54 is provided for the proper supply of the intermediate ion supplied to the intermediate oxidation reactor 10.

A reduction and regeneration tank for oxidizing the reduced catholyte flowing out from the cathode chamber 32 by contacting ozone or oxygen supplied from the ozone generator 50 and introducing the reduced catholyte into the cathode chamber of the electrolytic cell 30 again. 40 is provided, a part of the reduced catholyte discharged by the supply pump 53 from the lower portion of the reduction regeneration tank 40 to the cathode chamber 32 of the electrolytic cell 30 is the reduction regeneration tank 40 Scrubbing the gas generated during the reaction in the) to be circulated to the scrubber 41 provided on the upper end of the reduction regeneration tank 40, the reflux 42 is provided on the upper end of the scrubber 41 do.

On the other hand, the oxidizer 43 is provided at the lower gas inlet of the reduction / regeneration tank 40 so that ozone or oxygen introduced into the reduction / regeneration tank 40 from the ozone generator 50 is sufficiently mixed to oxidize the cathode solution. In order to maintain an appropriate temperature, the reduction and regeneration tank 40 is provided with a jacket 44.

Hereinafter, based on the device flow chart of the complex mediated oxidation process according to the present invention of FIG. 3, as a specific example, the reaction and flow in each device configuration is a complex ion using Ce ⁴⁺ ions and the catholyte using HNO ₃ . Examples of the mediated oxidation reaction will be described, but the examples do not limit the scope of the present invention.

Ce ⁴⁺ ions, which are the mediated ions introduced through the conduit 102 to the organic waste liquid flowing into the liquid oxidation reactor 11 of the mediated oxidation reactor 10 and the scrubber 15 located on the top of the liquid oxidation reactor 11, are scrubbers (15). 100 is introduced into the lower portion of the liquid oxidation reactor 11 through the medium ion inlet pipe 13 descending from the lower end of the liquid phase reaction tank 11 to the lower portion of the liquid oxidation reactor 11. Directly mixed with the organic waste solution introduced into the medium oxidation reaction tank 10 through, the organic waste solution introduced is oxidized in the liquid phase oxidation reaction tank 11 of the medium oxidation reaction tank 10 by Ce ⁴⁺ ions as a medium ion. Carbon dioxide is discharged to the top of the scrubber 15.

It is provided at the lower end of the liquid oxidation reactor (11) to increase the reaction rate of the organic waste liquid and Ce ^{4 +} ions by ultrasonic mixing using the ultrasonic mixer 12.

The reaction formula associated with the mediated oxidation reaction can be expressed as follows.

_{C x H y + 2x H 2} O -----> xCO 2 + (4x + y) e - + (4x + y) H + + (4x + y) Ce 3+ (1)

The mediation ion concentration meter (17) is used to determine the concentration of Ce ⁴⁺ ions and reduced Ce ³⁺ ions, which are mediated ions, in the conduit 201 that overflows the upper portion of the liquid oxidation reactor (11) and flows into the complex oxidation reactor (20). The organic waste liquid introduced by controlling the organic waste liquid inlet pump 51 based on the ratio of Ce ⁴⁺ ions and reduced Ce ³⁺ ions concentrations measured by the mediated ion concentration measuring instrument 17 measured through the measurement. By controlling the amount of to maintain the appropriate mediated oxidation of the mediated oxidation tank (10), and to measure the reaction variables such as the pressure and temperature of the liquid oxidation reactor (11) is used as a process operating variable.

A reaction mixture containing a mixture of Ce ⁴⁺ ions, reduced Ce ³⁺ ions, and unoxidized organic waste liquid, which overflows from the top of the liquid oxidation reactor 11, into the complex oxidation reactor 20 through a conduit 201. Ozone flows into the unreacted organic waste liquid by Ce ⁴⁺ ions and proceeds through the diffuser 50 at the bottom of the complex oxidation tank 20 through the conduit 203 from the ozone generator 50. This unreacted organic waste liquid is subjected to chemical oxidation.

The oxidation power of ozone is weaker than that of Ce ⁴⁺ ion, which is a medium ion, but the complex oxidation reaction tank 10 has already been decomposed into a lower molecular weight material through the oxidation process by Ce ⁴⁺ ion. Further ozone oxidation in the reactor 20 can occur efficiently.

The reaction equation for the reaction of organic waste and ozone can be expressed as

2 C _x H _y + (4a + b) O ₃ -----> 2aCO ₂ + bH ₂ O + (4a + b) O ₂ (2)

On the other hand, in the complex oxidation tank 20, there are Ce ⁴⁺ ions which can undergo a mediated oxidation reaction. Meanwhile, in the mediated oxidation tank 10 and the complex mediated oxidation tank 20, Ce ⁴ , which is a mediated ion by mediated oxidation reaction, is present. ⁺ ions are reduced to Ce ³⁺ ions are present, the reduced Ce ³⁺ ions ozone flowing through the diffuser 50 at the bottom of the composite oxidation reactor 20 together with the hydrogen ions present in the intermediate ion solution It is oxidized to Ce ⁴⁺ ion which has oxidizing power again.

The reaction scheme for the oxidation of the reduced mediated ion can be expressed as follows.

O ₃ + 2Ce ³⁺ 2H ⁺ -------> O ₂ + 2Ce ⁴⁺ + H ₂ O (3)

The gas generated in the complex oxidation reaction tank 20 flows out through the conduit 103 from the upper end of the complex oxidation reaction tank 20 and flows out through the conduit 104 at the upper end of the liquid oxidation reaction tank 11 of the intermediate oxidation reaction tank 10. Together with the lower end of the scrubber 14 located at the top of the liquid oxidation reactor 11 is reacted with the mediated ions introduced into the top of the scrubber 14 or discharged to the top of the scrubber 15.

Ce ⁴⁺ ions flowing out from the anode chamber 31 of the electrolytic cell 30 through the conduit 101 are introduced into the upper end of the complex oxidation reactor 20 through the conduit 202 and the lower end of the complex oxidation reactor 20. Ce ³⁺ ions reduced from the conduit 302 by the supply pump 52 are introduced into the anode chamber 31 of the electrolytic cell 30.

Ce ³⁺ ions introduced into the anode chamber 31 are oxidized to Ce ⁴⁺ ions by an electrochemical reaction by the current from the rectifier 34, and at the same time through the diaphragm 33 of the electrolytic cell 30. Hydrogen ions move to the cathode chamber 32 to oxidize the catholyte.

Reaction of anode

^{Ce 3+ ------> Ce 4+ + e} - (4)

Cathode chamber reaction

_{^{HNO 3 + e - + 2H +}} ------> HNO 2 + H 2 O (5)

The mediated ion solution containing oxidized Ce ⁴⁺ flows out of the anode chamber 31 and flows into the scrubber 15 of the mediated oxidation tank 10 through the conduit 101 and the conduit 102, and the mediated ion including Ce ⁴⁺ . A portion of the solution enters the top of the complex oxidation reactor 20 through conduit 202.

The flow rate fed into conduit 102 and conduit 202 is adjusted using flow meter 54.

The HNO ₂ solution, which is the reduced catholyte flowing out of the cathode chamber 32, flows into the lower end of the scrubber 41 provided at the upper end of the reduction regeneration tank 40 through the conduit 401, and then the conduit from the ozone generator 50. Ozone or oxygen supplied through 402 is mixed and contacted by the diffuser 43 to be oxidized to HNO ₃ .

The reaction in the reduction regeneration tank 40 can be represented by the following reaction formula.

2HNO ₂ + O ₂ ------> 2HNO ₃ (6)

The reduced catholyte flows back into the cathode chamber of the electrolytic cell 30 through the conduit 304 and the conduit 303 by the supply pump 53 at the lower end of the reduction regeneration tank 30, and some of the catholyte of the conduit 304 passes through the conduit 402. Through the scrubber (41) of the reduction and regeneration tank 30 through the scrubbing NO generated during the reduction reaction, the flow rate of the conduit 303 and the conduit 402 feed can be adjusted using the flow meter (55).

As mentioned above, since the oxidation of Ce ³⁺ by ozone is performed in the complex oxidation reactor 20, the size of the electrolytic cell 30 becomes smaller than the processing capacity of the total organic waste liquid by the mediated ion, and at the same time, the anode chamber Since the amount of Ce ^{3+ to be} oxidized in the small amount of the catholyte reduced in the cathode chamber is also reduced, the reduction regeneration tank 40 for reducing the catholyte is also reduced in size.

A vaporizer is further installed in the reduction and regeneration tank 30 to remove an appropriate amount of accumulated water generated through the redox reaction.

The apparatus according to the present invention increases the oxidation efficiency of organic waste liquid by using electrochemical mediated oxidation and ozone oxidation in combination with conventional mediated oxidation alone, so that it is possible to efficiently treat the highly degradable high concentration organic waste liquid. There is an advantage that the size of the oxidation reactor is reduced, and also by applying the integrated scrubber-type oxidation reactor, the device is simplified, there is an initial equipment investment cost and ease of operation.

In addition, by reducing the amount of reduced mediated ions to be treated in the electrolytic cell, the size of the electrolytic cell is reduced and the current consumption of the electrolytic cell is reduced by performing the oxidation reaction of the reduced mediated ions by ozone in the complex oxidation reactor. And, because the amount of the catholyte decreases, there is an advantage that the size of the reduction regeneration tank for reducing the catholyte decreases.

Claims (13)

The liquid organic reaction tank 11 in which the introduced organic waste liquid is mediated by mediated ions is positioned at the top of the liquid oxidation reactor 11, and mediated ions flowing out of the anode chamber 31 of the electrolytic cell 30 are introduced. A mediated oxidation reactor (10) provided with a scrubber (15) for mediating the gas generated from the liquid phase oxidation reactor (11) so that the organic waste liquid is electrochemically mediated by mediated ions; Reaction of the unreacted organic waste liquid of the mediated oxidation tank 10 with electrochemical mediated oxidation by mediated ions and oxidation using ozone generated from the ozone generator 50 and oxidizing the mediated ions with reduced ozone This is performed, and the generated gas is introduced into the scrubber 15, and the mediated ions flowing out of the anode chamber 31 of the electrolytic cell 30 flow into the upper end, and the ozone discharged from the ozone generator 50 is introduced. A complex oxidation reaction tank 20 flowing into the lower end through the diffuser 21; The cathode chamber 32 which receives electrons from the anode chamber 31 and the anode chamber 31 in which the reduced mediated ions introduced from the complex oxidation reactor 20 are oxidized by the current from the rectifier 34. And an electrolysis cell 30 provided with a diaphragm 33 between the anode chamber 31 and the cathode chamber 32; A reduction and regeneration tank for oxidizing the reduced catholyte flowing out from the cathode chamber 32 by contacting ozone or oxygen supplied from the ozone generator 50 and introducing the reduced catholyte into the cathode chamber of the electrolytic cell 30 again. 40; Complex mediated oxidation treatment apparatus of organic waste by electrochemical mediated oxidation and ozone oxidation, characterized in that consisting of. delete The method of claim 1, Medium ion inflow from the lower end of the scrubber 15 to the lower portion of the liquid oxidation reactor 11 so that the mediated oxidation reaction occurs while the organic waste liquid flowing into the liquid oxidation reactor 11 and the mediated ion introduced into the scrubber 15 are directly mixed. Complex mediated oxidation treatment apparatus of organic waste liquid by electrochemical mediated oxidation and ozone oxidation, characterized in that the tube (13) is provided. The method of claim 3, wherein An apparatus for treating complex mediated oxidation of organic waste liquid by electrochemical mediated oxidation and ozone oxidation, comprising an ultrasonic mixer at a lower portion of a liquid oxidation reactor (11) in which organic waste liquid and mediated ions are mixed. The method of claim 1, A medium ion concentration measuring device (17) is provided to measure the degree of reduction of the medium ion flowing out from the liquid phase oxidation tank (11) into the complex oxidation reaction tank (20) to control the organic waste liquid into which the medium ion concentration measuring device (17) flows. Complex mediated oxidation treatment apparatus for organic waste by electrochemical mediated oxidation and ozone oxidation, characterized in that. delete delete The method of claim 1, The membrane of the electrolytic cell 30 is a complex mediated oxidation treatment apparatus of organic waste liquid by electrochemical mediated oxidation and ozone oxidation, characterized in that the porous membrane. The method of claim 1, The reduced cathode liquid flowing out from the lower portion of the reduction regeneration tank 40 to the cathode chamber 32 of the electrolytic cell 30 is circulated to the scrubber 41 provided at the upper end of the reduction regeneration tank 40. Complex mediated oxidation treatment apparatus of organic waste liquid by electrochemical mediated oxidation and ozone oxidation. The method of claim 9, Ozone or oxygen introduced from the ozone generator 50 is introduced into the lower end of the reduction and regeneration tank 40 equipped with an acid pipe 43, complex mediated oxidation of organic waste liquid by electrochemical mediated oxidation and ozone oxidation Processing unit. The method of claim 1, The mediated ion is a complex mediated oxidation treatment apparatus for organic waste liquid by electrochemical mediated oxidation and ozone oxidation, characterized in that the cerium ion or silver ion. The method of claim 11, The mediated ions are complex mediated oxidation treatment apparatus of organic waste liquid by electrochemical mediated oxidation and ozone oxidation, characterized in that dissolved in nitric acid or sulfuric acid aqueous solution. The method of claim 1, The reduced catholyte is a complex mediated oxidation treatment apparatus of organic waste liquid by electrochemical mediated oxidation and ozone oxidation, characterized in that the HNO ₃ or H ₂ SO ₄ aqueous solution.

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