CN114477363A - A kind of treatment device for refractory organic wastewater - Google Patents

Abstract

The invention discloses a treatment device for refractory organic waste water, comprising a treatment unit and a metering pump. The treatment unit includes a transparent reactor with an annular structure, an ultraviolet lamp module passing through the central area of the annular structure, and a water inlet of the transparent reactor. Connected with the water outlet of the metering pump; the metering pump is used to pump the organic wastewater containing Fenton's reagent into the transparent reactor; the transparent reactor is used to treat the organic wastewater; the ultraviolet light emitted by the ultraviolet lamp module is uniformly transmitted through the transparent reactor Irradiate on organic wastewater to improve the degradation effect of organic wastewater. The device of the present application couples the photocatalytic technology and the Fenton oxidation technology, which avoids the shortcomings of a single technology, effectively improves the photocatalytic efficiency and the utilization rate of H ₂ O ₂ in the Fenton reagent, and reduces the amount of Fe ²⁺ , and is suitable for For the treatment of various organic wastewaters with chemical oxygen demand less than 5000mg/L, the total organic carbon removal rate can reach more than 45%. The invention is beneficial to promote the industrialization of the photo-Fenton technology in the field of refractory organic wastewater treatment.

Description

A kind of treatment device for refractory organic wastewater

technical field

The application relates to a treatment device for refractory organic wastewater, belonging to the technical field of organic wastewater treatment.

Background technique

With the development of economy and the increase of population, the large-scale discharge of industrial wastewater and domestic sewage has caused the contradiction between supply and demand of water resources in my country. More and more organic products (such as medicines, pesticides, synthetic fibers, plastics, coal gasification products, liquefied products, petroleum refining products, etc.) enter people's lives, and a large number of refractory organic substances will be produced during the production process. . If these substances are discharged into the environment without treatment, they will seriously pollute the environment and threaten human health. Therefore, the research on the treatment of refractory organic wastewater is a hot and difficult point in the current research on water pollution prevention and control.

Advanced Oxidation Process (AOPs) is a new type of wastewater treatment technology. It mainly uses hydroxyl radicals (HO ) with strong oxidizing ability generated during the reaction process to degrade the refractory organic matter in wastewater into small molecules, Easily biodegradable organic matter, even directly mineralized into water and carbon dioxide. The technology has received more and more attention due to its high efficiency, non-selectivity, and environmental friendliness.

Fenton oxidation is an advanced oxidation technology, which can oxidize many known organic compounds such as carboxylic acids, alcohols, and esters to inorganic states, and has a high ability to remove refractory organic pollutants. It is used in printing and dyeing wastewater, oily wastewater, It is widely used in wastewater treatment such as phenol-containing wastewater, coking wastewater, nitrobenzene-containing wastewater, and diphenylamine wastewater. However, the existing Fenton oxidation device has a high consumption of iron ions and a low utilization rate of the oxidant. When it is applied to the degradation of organic wastewater, its degradation effect is not good, and a large amount of iron sludge will be generated, causing Secondary pollution.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a treatment device for refractory organic waste water, so as to solve the problem that the consumption of iron ions in the Fenton oxidation device used in the degradation of existing organic waste water is high and the utilization rate of the oxidant is low, resulting in organic waste water. The degradation effect is not good and a large amount of iron sludge will be produced, causing technical problems of secondary pollution.

The treatment device for refractory organic waste water of the present invention includes a treatment unit and a metering pump. The treatment unit includes a transparent reactor in an annular structure and an ultraviolet lamp module passing through the central area of the annular structure. The transparent reactor The water inlet is communicated with the water outlet of the metering pump;

The metering pump is used to pump organic waste water containing Fenton's reagent into the transparent reactor;

the transparent reactor for treating the organic waste water;

The ultraviolet light emitted by the ultraviolet lamp module is uniformly irradiated on the organic waste water through the transparent reactor, so as to improve the degradation effect of the organic waste water.

Preferably, it also includes a water storage tank;

The water inlet of the water storage tank is communicated with the water outlet of the transparent reactor for containing the degraded organic waste water flowing out of the transparent reactor;

The water inlet of the metering pump is communicated with the water outlet of the water storage tank, and the water outlet of the metering pump is communicated with the water inlet of the transparent reactor, which is used for the organic waste water in the water storage tank. Circulation is pumped into the transparent reactor.

Preferably, the water inlet of the transparent reactor is arranged at the bottom of the side wall of the transparent reactor, so that the organic waste water enters the transparent reactor in a tangential flow mode;

The water outlet of the transparent reactor is arranged on the top of the side wall of the transparent reactor;

The organic waste water rotates and flows along the annular structure from the water inlet of the transparent reactor to the water outlet of the transparent reactor at a set flow rate.

Preferably, it also includes a light protection unit, and both the transparent reactor and the ultraviolet lamp module are arranged inside the light protection unit;

The light protection unit is used for blocking the ultraviolet light emitted by the ultraviolet lamp module in the light protection unit.

Preferably, the light protection unit includes a camera obscura and an observation window;

The transparent reactor and the ultraviolet lamp module are both arranged in the dark box;

The observation window is arranged on the dark box door of the dark box, and is located at the orthographic position of the transparent reactor;

Preferably, the side walls and the top wall of the dark box are also provided with a plurality of through holes for heat dissipation.

Preferably, it also includes an air-cooled temperature control unit arranged in the dark box;

The air-cooled temperature control unit is used to help the ultraviolet lamp dissipate heat, prevent its working temperature from being too high, and discharge a small amount of ozone generated during its working process.

Preferably, the ultraviolet lamp module includes a power supply, an exciter and an ultraviolet lamp;

the power supply is connected to the exciter through a cable;

The exciter is also connected to the ultraviolet lamp, and is used to excite the ultraviolet lamp to emit ultraviolet light;

The ultraviolet lamp passes through the central area of the transparent reactor of the annular structure;

Preferably, the ultraviolet lamp is an electrodeless deep ultraviolet lamp;

Preferably, the single electric power of the electrodeless deep ultraviolet lamp is 300-400W, and the wavelength spectrum is mainly 254nm or 185nm with a short wavelength.

Preferably, the molar ratio of the dosage of the H ₂ O ₂ to the chemical oxygen demand of the organic wastewater is 1 to 4:1, and the dosage of the Fe ²⁺ is the same as that of the H ₂ O ₂ . The molar ratio of the dosage is 1:10～100.

Preferably, there are multiple processing units;

A plurality of the treatment units are connected in series, and the water outlet of the metering pump is connected to the transparent reactor in the first treatment unit. The present application can also use a plurality of metering pumps, each metering pump is connected to a transparent reactor in a processing unit for pumping organic wastewater containing Fenton's reagent into the transparent reactor.

When using multiple treatment units, the multiple treatment units are connected in series, and the metering pump pumps the organic wastewater containing Fenton's reagent into the transparent reactor in the first treatment unit. The transparent reactor of the second treatment unit, the transparent reactor of the third treatment unit... until the output of the transparent reactor of the last treatment unit, the output of the transparent reactor of the last treatment unit is the degraded organic wastewater.

When using multiple treatment units, in order to further improve the degradation effect of organic wastewater, the water inlet of the transparent reactor in the first treatment unit can also be connected with the water outlet of the metering pump, and the outlet of the transparent reactor in the last treatment unit can be connected. The water inlet is connected with the water inlet of the water storage tank, and the water outlet of the water storage tank is connected with the water inlet of the metering pump, so that a plurality of processing units, metering pumps and water storage tanks form a circulation system for circulating organic wastewater.

Preferably, the material of the transparent reactor is high-permeability quartz.

Compared with the prior art, the treatment device for refractory organic wastewater of the present invention has the following beneficial effects:

The device of the present application couples the photocatalytic technology with the Fenton oxidation technology, which avoids the shortcomings of a single technology, effectively improves the photocatalytic efficiency and the utilization rate of H ₂ O ₂ , reduces the amount of Fe ²⁺ , and reduces the amount of iron The production of mud is suitable for the treatment of various organic wastewaters with chemical oxygen demand (COD) less than 5000mg/L, and has a good pollutant removal effect, and the total organic carbon (TOC) removal rate can reach more than 45%. The invention is beneficial to promote the industrialization of the photo-Fenton technology in the field of refractory organic wastewater treatment.

In the present application, a transparent reactor with an annular structure is provided, and the ultraviolet lamp module is arranged at the center of the annular structure, so that the ultraviolet light emitted by the ultraviolet lamp module and the organic wastewater containing H ₂ O ₂ and Fe ²⁺ in the transparent reactor are sufficient Contact, improve the utilization rate of ultraviolet light, ensure the photocatalytic effect, thereby improving the degradation effect of organic wastewater.

The application also provides a water storage tank and a metering pump, and the combination of the water storage tank, the metering pump and the treatment unit can realize the continuous circulating treatment of the same batch of organic wastewater to be degraded, with good degradation effect, and because the device is simple, so the cost is low .

The present application defines that the water inlet of the transparent reactor is arranged at the bottom of the side wall of the transparent reactor and the water outlet of the transparent reactor is arranged at the top of the side wall of the transparent reactor, so that the waste water fills the transparent reactor and realizes the uniform distribution of waste water, At the same time, since the water inlet is arranged at the bottom end of the side wall, the water inlet direction of the water inlet is perpendicular to the axial direction of the transparent reactor, and a tangential flow is formed during water inlet. In the present application, the tangential flow and other resistance feeding methods can be used to ensure the uniform distribution of organic waste water. In addition, the present application defines that the organic waste water flows from the water inlet of the transparent reactor to the water outlet of the transparent reactor by rotating at a set flow rate along the annular structure, so that the distribution of the organic waste water is more uniform.

The application also provides a light protection unit, and the transparent reactor and the ultraviolet lamp module are both arranged inside the light protection unit; the light protection unit is used to block the ultraviolet light emitted by the ultraviolet lamp module in the light protection unit to avoid ultraviolet radiation.

The application is also provided with an air-cooled temperature control unit, which is used to help the ultraviolet lamp dissipate heat, prevent its working temperature from being too high, and discharge a small amount of ozone generated during its working process.

The ultraviolet lamp used in the ultraviolet lamp module of the present application is preferably an electrodeless deep ultraviolet lamp, which has strong irradiation power and long service life.

The application limits the molar ratio of the dosage of H ₂ O ₂ to the chemical oxygen demand of the organic wastewater to be 1 to 4:1, and the mole ratio of the dosage of Fe ²⁺ to the dosage of H ₂ O ₂ is 1 : 10 to 100. Only when the above ratio is satisfied, the treatment device for refractory organic wastewater can have the best effect when treating organic wastewater.

In order to ensure the degradation effect of the organic wastewater, another structure may be adopted in the present application, that is, a plurality of treatment units are provided, and the plurality of treatment units are connected in series, so as to realize multi-stage degradation.

The material of the transparent reactor of the present application is high-permeability quartz, which does not absorb ultraviolet light, so that all the ultraviolet light can be used for the treatment of organic wastewater, and the utilization rate of the ultraviolet light is improved.

Description of drawings

FIG. 1 is a schematic structural diagram of a treatment device for refractory organic wastewater in an embodiment of the present invention.

List of parts and reference numbers:

1. Transparent reactor; 2. Water storage tank; 3. Metering pump; 4. Dark box; 5. Air-cooled temperature control unit; 6. Power supply; 7. Exciter; 8. Ultraviolet lamp.

Detailed ways

FIG. 1 is a schematic structural diagram of a treatment device for refractory organic wastewater according to the present invention.

The treatment device for refractory organic wastewater according to the embodiment of the present invention includes: a treatment unit and a metering pump 3. The treatment unit includes a transparent reactor 1 with an annular structure and an ultraviolet lamp module passing through the central area of the annular structure. The transparent reactor 1 The water inlet is communicated with the water outlet of the metering pump 3; wherein the metering pump 3 is used to pump the organic waste water containing Fenton's reagent into the transparent reactor 1; the transparent reactor 1 is used to treat the organic waste water; The ultraviolet light emitted by the ultraviolet lamp module Through the transparent reactor 1, the organic wastewater is evenly irradiated to accelerate the degradation of the organic wastewater.

In the present application, a transparent reactor 1 with an annular structure is provided, and the ultraviolet lamp module is arranged in the central area of the annular structure, preferably at the center of the annular structure, so that the ultraviolet light emitted by the ultraviolet lamp module and the transparent reactor 1 contain fenugreek The organic waste water of the ton reagent is fully contacted, the utilization rate of ultraviolet light is improved, the photocatalytic effect is ensured, and the degradation effect of the organic waste water is improved.

In order to ensure the degradation effect of the organic waste water, the application also sets a water storage tank 2; the water inlet of the water storage tank 2 is communicated with the water outlet of the transparent reactor 1, and is used to contain the degraded organic waste water flowing out from the transparent reactor 1. The water inlet of the metering pump 3 is communicated with the water outlet of the water storage tank 2, and the water outlet of the metering pump 3 is communicated with the water inlet of the transparent reactor 1 for circulating the organic waste water in the water storage tank 2 into the transparent reactor. 1 in. In the present application, the water storage tank 2, the metering pump 3 are combined with the treatment unit, which can realize the cyclic treatment of the same batch of organic wastewater to be degraded, and the degradation effect is good, and because the device is simple, the cost is low.

In order to ensure the uniform distribution of the organic waste water, the present application adopts the tangential flow equal resistance feeding method to input the organic waste water into the transparent reactor 1 . Specifically: the water inlet of the transparent reactor 1 is arranged at the bottom of the side wall of the transparent reactor 1, and the water outlet of the transparent reactor 1 is arranged at the top of the side wall of the transparent reactor 1; The water inlet of the transparent reactor 1 rotates and flows along the annular structure to the water outlet of the transparent reactor 1. The set flow rate therein is the flow rate that can make the organic waste water flow from the water inlet of the transparent reactor 1 to the water outlet of the transparent reactor 1 by rotating along the annular structure. The application defines that the water inlet of the transparent reactor 1 is arranged at the bottom of the side wall of the transparent reactor 1 and the water outlet of the transparent reactor 1 is arranged at the top of the side wall of the transparent reactor 1, so that the waste water is filled with the transparent reactor 1, and the realization of The waste water is evenly distributed, and at the same time, since the water inlet is arranged at the bottom end of the side wall, the water inlet direction of the water inlet is perpendicular to the axial direction of the transparent reactor 1, and a tangential flow is formed when the water enters, and the waste water is effectively distributed in the reactor.

In order to avoid the influence of ultraviolet radiation on external personnel during the degradation of organic wastewater, a light protection unit is also provided in this application, and the transparent reactor 1 and the ultraviolet lamp module are both arranged inside the light protection unit; The ultraviolet light emitted by the module is blocked in the light protection unit. Wherein, the light protection unit includes a dark box 4 and an observation window (not shown in the figure), and the observation window is a transparent glass window that can prevent ultraviolet light; the transparent reactor 1 and the ultraviolet lamp module are both arranged in the dark box 4; the observation window is arranged in the On the dark box door (not shown in the figure) of the dark box 4, which is located at the orthographic position of the transparent reactor 1, the progress of the reaction of the organic wastewater can be observed. In this application, the material of the camera obscura 4 is stainless steel.

In order to prevent the temperature in the dark box 4 from being too high and affecting the degradation of the organic wastewater, the present application also provides a plurality of through holes (not shown in the figure) for heat dissipation on the side wall and the top wall of the dark box 4 . In order to further dissipate heat, the present application is also provided with an air-cooled temperature control unit 5; the air-cooled temperature control unit 5 is used to help the ultraviolet lamp dissipate heat, prevent its working temperature from being too high, and discharge a small amount of ozone generated during its working process. In the air-cooled temperature control unit 5 of the present application, the applicable device is a cooling fan. The cooling fan is turned on to accelerate the circulation between the dark box 4 and the outside air, thereby accelerating the discharge of ozone and heat in the dark box 4.

The ultraviolet lamp module of the present application includes a power source 6, an exciter 7 and an ultraviolet lamp 8; the power source 6 is connected to the exciter 7 through a cable; the exciter 7 is also connected to the ultraviolet lamp 8 for exciting the ultraviolet lamp 8 to emit ultraviolet light; the ultraviolet lamp 8 passes through the central area of the ring structure. Among them, the ultraviolet lamp 8 is preferably an electrodeless deep ultraviolet lamp; the single electric power of the electrodeless deep ultraviolet lamp is 300-400W, and the wavelength spectrum is mainly short wavelength 254nm/185nm. The electrodeless deep ultraviolet lamp has strong irradiation power and long life.

The application also defines that Fenton's reagent includes H ₂ O ₂ and Fe ²⁺ , wherein the molar ratio of the dosage of H ₂ O ₂ to the chemical oxygen demand of organic wastewater is 1-4:1, and the dosage of Fe ²⁺ The molar ratio of the amount to the dosage of H ₂ O ₂ is 1:10-100. Only when the above ratio is satisfied, the treatment device for refractory organic wastewater can have the best effect when treating organic wastewater.

In order to ensure the degradation effect of the organic wastewater, another structure may be adopted in the present application, that is, a plurality of treatment units are provided, and the plurality of treatment units are connected in series, so as to realize multi-stage degradation. The water outlet of the metering pump is connected to the transparent reactor in the first treatment unit. The present application can also use a plurality of metering pumps, each metering pump is connected to a transparent reactor in a processing unit for pumping organic wastewater containing Fenton's reagent into the transparent reactor.

When using multiple treatment units, the multiple treatment units are connected in series, and the metering pump pumps the organic wastewater containing Fenton's reagent into the transparent reactor in the first treatment unit. The transparent reactor of the second treatment unit, the transparent reactor of the third treatment unit... until the output of the transparent reactor of the last treatment unit, the output of the transparent reactor of the last treatment unit is the degraded organic wastewater.

When using multiple treatment units, in order to further improve the degradation effect of organic wastewater, the water inlet of the transparent reactor in the first treatment unit can also be connected with the water outlet of the metering pump, and the outlet of the transparent reactor in the last treatment unit can be connected. The water inlet is connected with the water inlet of the water storage tank, and the water outlet of the water storage tank is connected with the water inlet of the metering pump, so that a plurality of processing units, metering pumps and water storage tanks form a circulation system for circulating organic wastewater.

The material of the transparent reactor 1 of the present application is high-permeability quartz, because quartz does not absorb ultraviolet light, so that all the ultraviolet light can be used for the treatment of organic waste water, and the utilization rate of the ultraviolet light is improved.

The device of the present application couples the photocatalytic technology with the Fenton oxidation technology, which avoids the shortcomings of a single technology, effectively improves the photocatalytic efficiency and the utilization rate of H ₂ O ₂ , reduces the amount of Fe ²⁺ , and reduces the amount of iron The production of mud is suitable for the treatment of various organic wastewaters with chemical oxygen demand (COD) less than 5000mg/L, and has a good pollutant removal effect, and the total organic carbon (TOC) removal rate can reach more than 45%. The invention is beneficial to promote the industrialization of the photo-Fenton technology in the field of refractory organic wastewater treatment.

The using method of the treatment device of the refractory organic wastewater of the present application is as follows:

Step 1. Adjust the pH of the organic wastewater to an appropriate value (3 to 6.5), according to the molar ratio of the dosage of H ₂ O ₂ and the chemical oxygen demand of the organic wastewater to be 1 to 4:1, and the dosage of Fe ²⁺ The molar ratio of the amount to the dosage of H ₂ O ₂ is 1:10～100, add H ₂ O ₂ and Fe ²⁺ to the organic waste water and stir evenly;

Step 2, transfer the prepared reaction solution of Step 1 to the water storage tank 2, turn on the metering pump 3, and turn on the air-cooled temperature control unit 5;

Step 3. When the reaction solution is discharged to the water storage tank 2, it means that the reaction solution has filled the transparent reactor 1. At this time, close the dark box door of the light protection system, turn on the power supply 6 and start timing. Of course, the power source 6 can also be turned on before step 2.

Step 4. Select different residence times to take samples in the water storage tank 2, stop the reaction after the reaction, and analyze the water quality of the sample.

The following will describe the effect of the photo-Fenton catalytic oxidation refractory organic wastewater treatment device of the present application in treating organic wastewater with specific examples.

The present invention adopts the TOC-VCPH/CPN analyzer produced by Shimadzu Corporation to measure the total organic carbon (TOC) of the waste water; adopts the GB11914-89 potassium dichromate method to measure the chemical oxygen demand (COD) of the waste water; 3C precision pH meter to measure the pH of water samples.

Example 1

Take 1L of phenol-containing wastewater, the water quality is shown in Table 1, without adjusting the pH of the wastewater, add 1.6mL/L 30% H ₂ O ₂ and 11mg/LFe ²⁺ (the molar ratio of H ₂ O ₂ and Fe ²⁺ is 80 : 1), the flow rate is 75mL/min, the residence time is 1h, and the removal rate of effluent TOC can reach 88.6%.

Comparative Example 1

The same wastewater was treated by a method similar to that in Example 1, except that Fe ²⁺ was not added, which was equivalent to a photocatalytic oxidation reaction, and the removal rate of TOC in the effluent was 3.9%.

Comparative Example 2

The same wastewater was treated by a method similar to that of Example 1, except that the ultraviolet lamp was not turned on, which was equivalent to Fenton oxidation reaction, and the removal rate of TOC in the effluent was 22.6%.

Example 2

Take 1L Guangtaiyuan landfill leachate MVR effluent, the water quality is shown in Table 1, adjust the pH of the wastewater to 4.5, add 1.15mL/L 30% H ₂ O ₂ and 32mg/LFe ²⁺ (H ₂ O ₂ and Fe ^{2 )} The molar ratio of ⁺ is 20:1), the flow rate is 75mL/min, the residence time is 1h, and the removal rate of effluent TOC is 48.5%.

Example 3

Take 1L of vanillin wastewater, the water quality is shown in Table 1, without adjusting the pH of the wastewater, add 4.56mL/L 30% H ₂ O ₂ and 124mg/LFe ²⁺ (molar ratio of H ₂ O ₂ and Fe ²⁺ 20:1), the flow rate was 75mL/min, the residence time was 1h, and the removal rate of effluent TOC was 48.1%.

Example 4

Take 1L of printing and dyeing wastewater, the water quality is shown in Table 1, adjust the pH of the wastewater to 5, add 0.93mL/L 30% H ₂ O ₂ and 26mg/LFe ²⁺ (the molar ratio of H ₂ O ₂ and Fe ²⁺ is 20:1), the flow rate was 75mL/min, the residence time was 1h, and the removal rate of effluent TOC was 62.8%.

Example 5

Take 1L of coking wastewater, the water quality is as shown in Table 1, without adjusting the pH of the wastewater, add 13.9mL/L 30% H ₂ O ₂ and 382mg/LFe ²⁺ (the molar ratio of H ₂ O ₂ and Fe ²⁺ is 20: 1), the flow rate is 75mL/min, the residence time is 1h, and the removal rate of effluent TOC is 56.2%.

Table 1 The water quality and treatment results of industrial wastewater in the optical Fenton device

The device for treating refractory organic wastewater by catalytic oxidation of the present invention couples the photocatalytic technology with the Fenton oxidation technology. From the experimental results of Example 1 and Comparative Example 1, it can be seen that compared with the photocatalytic technology, the photo-Fenton technology adds a small amount of The Fe ²⁺ can greatly improve the photocatalytic efficiency and the utilization rate of H ₂ O ₂ , and significantly improve the removal effect of pollutants; from the experimental results of Example 1 and Comparative Example 2, it can be seen that the introduction of ultraviolet light has a negative effect on Fenton oxidation. The improvement of the technology is very obvious, and the TOC removal rate has increased from 22.6% to 88.6%. However, on the other hand, in order to ensure the pollutant removal effect of the Fenton oxidation technology, the dosage of Fe ²⁺ must be increased, which also verifies Optical Fenton technology can reduce the dosage of Fe ²⁺ and reduce the advantages of iron sludge.

It can be seen from the data in Table 1 that the treatment device for catalytic oxidation refractory organic wastewater has a good pollutant removal effect on various types of wastewater, and the TOC removal rate can reach more than 45%.

The above are only a few embodiments of the present application, and are not intended to limit the present application in any form. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Without departing from the scope of the technical solution of the present application, any changes or modifications made by using the technical content disclosed above are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims (10)

1. a treatment device for refractory organic waste water, characterized in that it comprises a treatment unit and a metering pump, and the treatment unit includes a transparent reactor of an annular structure and an ultraviolet lamp module that passes through a central area of the annular structure, The water inlet of the transparent reactor is communicated with the water outlet of the metering pump; The metering pump is used to pump organic waste water containing Fenton's reagent into the transparent reactor; the transparent reactor for treating the organic waste water; The ultraviolet light emitted by the ultraviolet lamp module is uniformly irradiated on the organic waste water through the transparent reactor, so as to improve the degradation effect of the organic waste water. 2. The device for treating refractory organic wastewater according to claim 1, characterized in that, further comprising a water storage tank; The water inlet of the water storage tank is communicated with the water outlet of the transparent reactor for containing the degraded organic waste water flowing out of the transparent reactor; The water inlet of the metering pump communicates with the water outlet of the water storage tank, and is used for circulating and pumping the organic waste water in the water storage tank into the transparent reactor. 3 . The device for treating refractory organic wastewater according to claim 2 , wherein the water inlet of the transparent reactor is arranged at the bottom of the side wall of the transparent reactor, so that the organic wastewater flows in a tangential flow. 4 . way into the transparent reactor; The water outlet of the transparent reactor is arranged on the top of the side wall of the transparent reactor; The organic waste water rotates and flows along the annular structure from the water inlet of the transparent reactor to the water outlet of the transparent reactor at a set flow rate. 4. The device for treating refractory organic wastewater according to claim 3, further comprising a light protection unit, wherein the transparent reactor and the ultraviolet lamp module are both arranged inside the light protection unit; The light protection unit is used for blocking the ultraviolet light emitted from the ultraviolet lamp module in the light protection unit. 5. The device for treating refractory organic wastewater according to claim 4, wherein the light protection unit comprises a camera obscura and an observation window; The transparent reactor and the ultraviolet lamp module are both arranged in the dark box; The observation window is arranged on the dark box door of the dark box, and is located at the orthographic position of the transparent reactor; Preferably, the side walls and the top wall of the dark box are also provided with a plurality of through holes for heat dissipation. 6. The device for treating refractory organic wastewater according to claim 5, further comprising an air-cooled temperature control unit arranged in the dark box; The air-cooled temperature control unit is used to help the ultraviolet lamp dissipate heat, prevent its working temperature from being too high, and discharge a small amount of ozone generated during its working process. 7. The device for treating refractory organic wastewater according to claim 1, wherein the ultraviolet lamp module comprises a power supply, an exciter and an ultraviolet lamp; the power supply is connected to the exciter through a cable; The exciter is also connected with the ultraviolet lamp, and is used to excite the ultraviolet lamp to emit ultraviolet light; The ultraviolet lamp passes through the central area of the transparent reactor of the annular structure; Preferably, the ultraviolet lamp is an electrodeless deep ultraviolet lamp; Preferably, the single electric power of the electrodeless deep ultraviolet lamp is 300-400W, and the wavelength spectrum is mainly 254nm or 185nm with a short wavelength. 8. The device for treating refractory organic wastewater according to claim 1, wherein the Fenton reagent comprises H ₂ O ₂ and Fe ²⁺ ; Preferably, the molar ratio of the dosage of the H ₂ O ₂ to the chemical oxygen demand of the organic wastewater is 1 to 4:1, and the dosage of the Fe ²⁺ is the same as that of the H ₂ O ₂ . The molar ratio of the dosage is 1:10～100. 9. The device for treating refractory organic wastewater according to any one of claims 1 to 8, characterized in that there are multiple treatment units; A plurality of the processing units are connected in series. 10 . The device for treating refractory organic wastewater according to claim 1 , wherein the transparent reactor is made of high-permeable quartz. 11 .

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