Plasma adsorption dual action degradation industrial wastewater equipment and method thereof

Abstract

The application relates to a plasma adsorption dual-action industrial wastewater degradation equipment and a method thereof, and belongs to the technical field of environmental protection. Adsorption and desorption can be synchronously carried out, production efficiency is improved, power consumption and electrode loss are greatly reduced, and treatment of high-concentration and large-flow sewage is realized. The treatment depth of the application is excellent, the oxidation potential of plasma discharge can easily reach more than 20 electron volts, the oxidation potential of fluorine, which is the highest in chemical substances, is only 3.2 electron volts, and the higher oxidation potential means better treatment effect. Normal temperature and pressure operation, low operation cost. The application is suitable for most water quality (no requirements for the PH value, salinity and ammonia nitrogen of water), and the technology has excellent universality. Traditional adsorption technology inevitably produces a large amount of solid waste, and the treatment difficulty and treatment cost are high, which has become a pain point in the industry. The application avoids the generation of solid waste while improving the degradation efficiency of organic matters and reducing energy consumption.

Description

Technical Field

[0001] This invention relates to an industrial wastewater treatment technology, belonging to the field of environmental protection technology. Background Technology

[0002] Currently, plasma wastewater treatment technology, as a new water treatment technology, has been used to treat dyeing and printing wastewater, pesticide wastewater, and pharmaceutical wastewater. It has advantages such as operating at normal temperature and pressure, no chemical additives, no emissions of pollutants, and good treatment results. However, it also has drawbacks such as high power consumption and significant wear and tear on the liquid phase electrode.

[0003] Adsorption is a mature technology for treating wastewater, but adsorption is prone to saturation and desorption is difficult, so it is usually only suitable for treating low-concentration wastewater. Plasma is suitable for treating high-concentration wastewater, but it consumes a lot of electricity and is only suitable for treating small-flow-rate wastewater. Summary of the Invention

[0004] To address the above problems, this invention proposes a plasma-based adsorption treatment device and method for industrial wastewater. In this invention, adsorption and desorption can be performed simultaneously, improving production efficiency, significantly reducing power consumption and electrode wear, and enabling the treatment of high-concentration and high-flow-rate wastewater.

[0005] To solve the technical problem of this invention, the proposed technical solution is: a plasma adsorption dual-action degradation device for industrial wastewater, comprising a vertical water tank (1), a T-shaped fixed bracket (2), a pulley group (3), and a flat electrode group (4); wherein, the water tank (1) is made of engineering plastic material, and the T-shaped fixed bracket (2) is installed upside down at the bottom of the middle of the vertical water tank (1); the pulley group (3) consists of two fixed pulleys, which are fixedly installed on the middle rod of the T-shaped bracket (2) respectively; the flexible rope of the pulley group (3) is made of fiber cloth; on both sides of the symmetrical flexible rope of the pulley group (3), flat electrode groups (4) are respectively installed, the flat electrode groups (4) are connected to AC power, the number of the flat electrode groups (4) is 2, and they are fixed on the upper side wall of the vertical water tank (1), and the gap between the flat electrode group (4) and the surface of the fiber cloth is 2mm-4mm.

[0006] Preferably, a pulley is installed at the center line of the engineering plastic water tank (1), one above and one below. The edge of the pulley is higher than the center line. The pulley shaft is fixed in the corresponding round hole on the T-shaped fixing bracket (2). The fiber cloth is hung on the pulley and fixed with appropriate tension. In addition, a set of flat electrodes is symmetrically placed on both sides of the fiber cloth hanging on the pulley.

[0007] Preferably, one of the two fixed pulleys in the pulley block (3) is a driving pulley and the other is a driven pulley.

[0008] Preferably, the flexible rope of the pulley assembly (3) is composed of activated carbon fiber cloth, graphite fiber cloth, aluminum silicate fiber cloth or glass fiber cloth.

[0009] Preferably, the flat electrode (4) is fixed by a slot on the wall of the water tank (1).

[0010] Preferably, one electrode of the flat plate electrode group (4) is connected to a positive high voltage high frequency current (voltage 10KV-20KV, frequency 20K-40K), and the other electrode is connected to a negative high voltage high frequency current (voltage 10KV-20KV, frequency 20K-40K).

[0011] Preferably, the water tank is equipped with an inlet valve and an outlet valve, with the inlet valve located at the top and the outlet valve located at the bottom.

[0012] To solve the technical problem of this invention, another technical solution is proposed: the method for degrading industrial wastewater by the dual action of plasma adsorption of the aforementioned equipment includes the following steps:

[0013] (1) Add industrial wastewater to the vertical water tank (1) and control the water line at half height. At this time, one of the two fixed pulleys of the pulley group (3) is above the water surface and the other is submerged in the water. The soft fiber cloth on the pulley group (3) is also half above the water and half below the water.

[0014] (2) Use a motor to drive the pulley group (3) to rotate. The linear speed of the pulley is 0.5cm-5cm per second. One side of the soft fiber cloth rises out of the water and the other side of the soft fiber cloth sinks into the water. At this time, the flat electrode group (4) is connected to the plasma power supply.

[0015] (3) The fiber cloth above the water surface has a small amount of water. When it receives plasma discharge, the water molecules decompose into hydroxide ions and hydrogen ions.

[0016] H2O=H + +OH -

[0017] Simultaneously, during plasma discharge, the glass fiber cloth becomes positively charged on one side and negatively charged on the other, forming positive and negative functional groups respectively. These groups then react chemically with hydrogen ions and hydroxide ions to form hydroxyl groups and hydrogen atoms, and can further generate some hydrogen peroxide.

[0018] Molecular formula: OH - +Positive functional group = OH (hydroxyl group)

[0019] H + +Negative functional group = H (hydrogen atom)

[0020] 2OH = H₂O₂ (hydrogen peroxide)

[0021] At the same time, dissolved oxygen in the water also reacts with negative functional groups to generate superoxide anions.

[0022] Molecular formula: O2 + negative functional group = O2 -(Superoxide anion)

[0023] Hydroxyl groups, hydrogen atoms, superoxide anions, and hydrogen peroxide all have strong redox properties and can effectively decompose organic matter in wastewater.

[0024] (4) The glass fiber cloth that is about to be submerged in water also undergoes plasma discharge before entering the water, forming positive and negative functional groups respectively, which effectively improves the surface energy of the fiber cloth, thereby greatly improving the ability of the fiber cloth to adsorb organic matter.

[0025] In this way, the fiber cloth on both sides of the roller adsorbs organic matter by plasma discharge on one side and degrades it by plasma discharge on the other side. The adsorption and desorption occur simultaneously and repeatedly to achieve the goal of degrading organic matter.

[0026] (5) After the emission standards are met, turn off the plasma power supply, stop the motor rollers from running, open the drain valve, and discharge the qualified wastewater.

[0027] The method for degrading industrial wastewater using the dual action of plasma adsorption in the aforementioned equipment includes the following steps:

[0028] Step 1: Prepare a neutral solution of nonionic flocculant polyacrylamide with a mass concentration of 0.1% to 0.3%, a pH value of 7, and free of salt for later use;

[0029] Step 2: Pour the prepared solution into the vertical water tank according to the actual required amount; mix it with the organic pollutant wastewater;

[0030] Step 3: Start the motor to drive the roller to rotate. The roller's linear speed is 0.5cm-5cm per second. The fiberglass cloth on both sides of the roller rises out of the water while sinking into the water. At the same time, start the plasma power supply to achieve plasma dielectric barrier discharge.

[0031] Because polyacrylamide has both water-absorbing and oil-absorbing properties, it can adsorb organic pollutants in the solution; and when glass fiber cloth is subjected to plasma discharge, a large number of charges are generated on its surface, which greatly improves the water absorption of the glass fiber cloth, and consequently greatly improves the oil absorption of the fiber cloth.

[0032] Step 4: The fiber cloth that has adsorbed organic pollutants in the solution will simultaneously achieve the dual effects of effective pollutant degradation and fiber cloth plasma desorption during the subsequent plasma discharge.

[0033] At the centerline of an engineering plastic water tank, a roller is positioned above and below it, with the edges of the rollers protruding. The roller shafts are fixed in corresponding circular holes on an inverted T-shaped bracket. Activated carbon fiber cloth, graphite fiber cloth, aluminum silicate fiber cloth, and glass fiber cloth are hung on the rollers and fixed with appropriate tension. In addition, a set of flat electrodes is symmetrically placed on both sides of the hanging fiber cloth, close to the rollers (the gap between the flat electrode and the fiber cloth surface is 2mm-4mm). The flat electrodes are fixed through slots on the tank wall. One electrode is connected to positive high voltage high frequency electricity (voltage 10KV-20KV, frequency 20K-40K), and the other electrode is connected to negative high voltage high frequency electricity (voltage 10KV-20KV, frequency 20K-40K).

[0034] Beneficial effects:

[0035] This invention allows for simultaneous adsorption and desorption, improving production efficiency, significantly reducing power consumption and electrode wear, and enabling the treatment of high-concentration and high-flow-rate wastewater.

[0036] (1) The present invention has excellent processing depth. The oxidation potential of plasma discharge can easily reach more than 20 electron volts, while fluorine, the chemical substance with the highest oxidation potential, has an oxidation potential of only 3.2 electron volts. A higher oxidation potential means a better processing effect.

[0037] (2) It operates at normal temperature and pressure, resulting in low operating costs.

[0038] (3) The plasma discharge treatment of organic wastewater of this invention is suitable for most water qualities (there are no requirements for the pH value, salinity and ammonia nitrogen of the water), and the technology has excellent versatility.

[0039] (4) Traditional adsorption technology inevitably generates a large amount of solid waste, which is difficult and expensive to treat, and has become a pain point in the industry. This invention improves the degradation efficiency of organic matter, reduces energy consumption, and avoids the generation of solid waste.

[0040] (5) In Example 2, hydroxyl group, hydrogen atom, superoxide anion, hydrogen peroxide, activated sulfate ion SO4 - Both have strong redox properties and activate sulfate ions (SO4). - It exhibits high stability and greater pH adaptability, effectively decomposing organic matter in water and treating wastewater organic matter better than in Example 1. The hydroxyl group (OH) reacts with activated sulfate (SO₄²⁻). - 4. It has a good synergistic effect in oxidation reactions, SO4 - OH can selectively degrade organic pollutants containing electron-donating groups, while it can non-selectively degrade organic pollutants containing electron-withdrawing groups, effectively improving the treatment efficiency of organic pollutants.

[0041] (6) Compared with Example 1, Example 3 adds nonionic flocculant polyacrylamide, which can transfer the flocculant bound to pollutants onto the fiber cloth; the high concentration of pollutants on the fiber cloth is more conducive to subsequent plasma treatment. Example 3 treats organic wastewater more efficiently and with higher concentrations, and can treat high-concentration (COD value greater than 2000) wastewater to handle high flow rates of wastewater. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of a plasma adsorption dual-action device for degrading industrial wastewater.

[0043] Figure 2 This is a schematic diagram of the working process of a plasma adsorption dual-action device for degrading industrial wastewater. Detailed Implementation

[0044] Example 1: (Suitable for treating small-flow industrial wastewater, no additives required)

[0045] A plasma adsorption dual-action device for degrading industrial wastewater includes a vertical water tank 1, a T-shaped fixed support 2, a pulley system 3, and a flat electrode assembly 4. The water tank 1 is made of engineering plastic. The T-shaped fixed support 2 is inverted and installed at the bottom center of the vertical water tank 1. The pulley system 3 consists of two fixed pulleys, one above the other, fixedly installed on the middle rod of the T-shaped support 2. The flexible cable of the pulley system 3 is made of fiber cloth. Two flat electrode assemblies 4 are installed on both sides of the symmetrical flexible cable of the pulley system 3, fixed to the upper side wall of the vertical water tank 1. The gap between the flat electrode assembly 4 and the fiber cloth surface is 3 mm.

[0046] At the center line of the engineering plastic water tank 1, a pulley is installed at the top and bottom. The edge of the pulley is higher than the center line. The pulley shaft is fixed in the corresponding round hole on the T-shaped fixing bracket 2. The fiber cloth is hung on the pulley and fixed with appropriate tension. In addition, a set of flat electrodes is symmetrically placed on both sides of the fiber cloth hanging on the pulley.

[0047] The pulley block 3 has two fixed pulleys, one of which is the driving pulley and the other is the driven pulley.

[0048] The flat plate electrode 4 is fixed by a slot on the wall of the water tank 1.

[0049] The flexible rope of the pulley block 3 is made of fiberglass cloth.

[0050] The flat plate electrode group 4 is connected to an AC power supply. One of the electrodes of the flat plate electrode group 4 is connected to a positive high voltage high frequency current (15KV, 30K), and the other electrode is connected to a negative high voltage high frequency current (15KV, 30K).

[0051] The side of the fiberglass cloth closest to the positive electrode of the flat plate becomes negatively charged, while the side of the fiberglass cloth closest to the negative electrode of the flat plate becomes positively charged.

[0052] Step 1: Open the water inlet valve and fill the vertical water tank with water. Stop filling the water when the water line reaches half the height of the vertical water tank. At this time, one of the upper and lower rollers is above the water surface and the other is submerged in the water. The fiber cloth fixed on the rollers is also half above the water and half submerged in the water.

[0053] Step 2: Start the motor to drive the roller to rotate. The roller's linear speed is 0.5cm-5cm per second. The fiberglass cloth on both sides of the roller rises out of the water while sinking into the water. At the same time, the plasma power supply is activated to achieve plasma dielectric barrier discharge.

[0054] Step 3: The fiberglass cloth that rises above the water surface contains a small amount of moisture. When it receives plasma discharge, the water molecules decompose into hydroxide ions and hydrogen ions.

[0055] Molecular formula H2O=H + +OH -

[0056] Simultaneously, during plasma discharge, the glass fiber cloth becomes positively charged on one side and negatively charged on the other, forming positive and negative functional groups respectively. These groups then react chemically with hydrogen ions and hydroxide ions to form hydroxyl groups and hydrogen atoms, and can further generate some hydrogen peroxide.

[0057] Molecular formula: OH - +Positive functional group = OH (hydroxyl group)

[0058] H + +Negative functional group = H (hydrogen atom)

[0059] 2OH = H₂O₂ (hydrogen peroxide)

[0060] At the same time, dissolved oxygen in the water also reacts with negative functional groups to generate superoxide anions.

[0061] Molecular formula: O2 + negative functional group = O2 - (Superoxide anion)

[0062] Hydroxyl groups, hydrogen atoms, superoxide anions, and hydrogen peroxide all possess strong redox properties, effectively decomposing organic matter in water. This achieves the degradation of organic matter in the fiber cloth, i.e., the desorption of the fiber cloth.

[0063] Step 4: The fiberglass cloth, which is about to be submerged in water, is dehydrated by the action of pulleys. Before entering the water, it also undergoes plasma discharge to form positive and negative functional groups, which effectively increases the surface energy of the fiber cloth and thus greatly enhances the ability of the fiber cloth to adsorb organic matter.

[0064] In this way, the fiber cloth on both sides of the roller adsorbs organic matter by plasma discharge on one side and degrades it by plasma discharge on the other side. The adsorption and desorption occur simultaneously and repeatedly to achieve the goal of degrading organic matter.

[0065] Step 5: After the emission standards are met, turn off the plasma power supply, stop the motor rollers from running, open the drain valve, and discharge the qualified wastewater.

[0066] Example 2: (Suitable for treating large-volume wastewater, requires the addition of chemical additives)

[0067] A plasma adsorption dual-action device for degrading industrial wastewater is basically the same as in Example 1, except that:

[0068] The flexible rope of the pulley block 3 is composed of activated carbon fiber cloth.

[0069] The gap between the flat electrode assembly 4 and the fiber cloth surface is 2mm, and the flat electrode 4 is fixed by a slot on the wall of the water tank 1.

[0070] The flat plate electrode group 4 is connected to an AC power supply, and the voltage is amplified through a differential circuit. One of the electrodes of the flat plate electrode group 4 is connected to a positive high voltage high frequency current (10KV, 20K), and the other electrode is connected to a negative high voltage high frequency current (10KV, 20K).

[0071] A certain amount of self-made sodium persulfate liquid was extracted and injected into the plasma reaction tank.

[0072] Step 1: Selecting an electrolytic cell for sodium persulfate production: The anode is a platinum-plated titanium sheet, and the cathode is a Fe-C-Cr alloy electrode. An ion-exchange membrane separates the anode and cathode regions. The anolyte consists of 220-300 g / L sodium sulfate and 200-400 g / L sulfuric acid. 0-2 g / L of an anode additive is added to the anolyte; this additive is one of sodium thiocyanate, sodium chloride, sodium fluoride, or sodium polyphosphate. The cathode electrolyte is a 10-20% sulfuric acid solution. The operating temperature is 15-40 degrees Celsius, and the current density is 0.5-1.5 A / m. 2 Sodium persulfate solution is prepared by electrolysis for 1 to 6 hours.

[0073] Step 2: Extract a certain amount of sodium persulfate liquid from the anode area of ​​the electrolytic cell as needed and inject it into another plasma reaction tank.

[0074] Step 3: Open the water inlet valve and fill the vertical water tank with water. Stop filling the water when the water line reaches half the height of the vertical water tank. At this time, one of the upper and lower rollers is above the water surface and the other is submerged in the water. The carbon fiber cloth fixed on the rollers is also half above the water and half submerged in the water.

[0075] Step 4: Start the motor to drive the roller to rotate. The linear speed of the roller is 0.5cm-5cm per second. The carbon fiber cloth on both sides of the roller rises out of the water and sinks into the water. At the same time, the plasma power supply is started to realize plasma dielectric barrier discharge.

[0076] Step 5: The carbon fiber cloth that rises out of the water contains a small amount of water. When it receives plasma discharge, the water molecules decompose into hydroxide ions and hydrogen ions.

[0077] Molecular formula H2O=H + +OH -

[0078] Simultaneously, during plasma discharge, the carbon fiber cloth becomes positively charged on one side and negatively charged on the other, forming positive and negative functional groups respectively. These groups then react chemically with hydrogen ions and hydroxide ions to form hydroxyl groups and hydrogen atoms, and can further generate some hydrogen peroxide.

[0079] Molecular formula: OH - +Positive functional group = OH (hydroxyl group)

[0080] H + +Negative functional group = H (hydrogen atom)

[0081] 2OH = H₂O₂ (hydrogen peroxide)

[0082] At the same time, dissolved oxygen in the water also reacts with negative functional groups to generate superoxide anions.

[0083] Molecular formula: O2 + negative functional group = O2 - (Superoxide anion)

[0084] Meanwhile, sodium persulfate generates activated sulfate ions under the catalysis of carbon fibers.

[0085] Molecular formula: Na₂S₂O₈ = 2Na + +2SO4 _

[0086] Hydroxyl group, hydrogen atom, superoxide anion, hydrogen peroxide, activated sulfate ion SO4 - Both have strong redox properties and activate sulfate ions (SO4). - It is highly stable, has a higher pH adaptability, and can effectively decompose organic matter in water. Compared with Example 1, it can better treat organic matter in wastewater.

[0087] Step 6: Before the carbon fiber cloth is submerged in water, it also undergoes plasma discharge to form positive and negative functional groups, which effectively increases the surface energy of the carbon fiber cloth and thus greatly enhances its ability to adsorb organic matter.

[0088] In this way, the fiber cloth on both sides of the roller adsorbs organic matter by plasma discharge on one side and degrades it by plasma discharge on the other side. The adsorption and desorption occur simultaneously and repeatedly to achieve the goal of degrading organic matter.

[0089] Step 7: After the emission standards are met, turn off the plasma power supply, stop the motor rollers from running, open the drain valve, and discharge the qualified wastewater.

[0090] It should be emphasized that: the hydroxyl group (OH) reacts with the activated sulfate ion (SO₄²⁻). - 4. It has a good synergistic effect in oxidation reactions, SO4 - OH can selectively degrade organic pollutants containing electron-donating groups, while it can non-selectively degrade organic pollutants containing electron-withdrawing groups, effectively improving the treatment efficiency of organic pollutants.

[0091] Example 3: (Treatment of high-concentration organic wastewater)

[0092] A plasma adsorption dual-action device for degrading industrial wastewater is basically the same as in Example 1, except that:

[0093] The flexible rope of the pulley block 3 is made of fiberglass cloth.

[0094] The gap between the flat electrode assembly 4 and the fiber cloth surface is 4mm, and the flat electrode 4 is fixed by a slot on the wall of the water tank (1).

[0095] The flat plate electrode group 4 is connected to an AC power supply. One of the electrodes of the flat plate electrode group 4 is connected to a positive high voltage high frequency current (voltage 20KV, frequency 40K), and the other electrode is connected to a negative high voltage high frequency current (voltage 20KV, frequency 40K).

[0096] The nonionic flocculant polyacrylamide was prepared to a mass concentration of 0.1% to 0.3% and injected into the plasma reaction tank.

[0097] Step 1: Prepare a neutral solution of nonionic flocculant polyacrylamide with a mass concentration of 0.1% to 0.3%, a pH value of 7, and free of salt for later use.

[0098] Step 2: Pour the prepared solution into the vertical water tank according to the actual required amount. Mix with the organic pollutant wastewater.

[0099] Step 3: Start the motor to drive the roller to rotate. The roller's linear speed is 0.5cm-5cm per second. The fiberglass cloth on both sides of the roller rises out of the water while sinking into the water. At the same time, the plasma power supply is activated to achieve plasma dielectric barrier discharge.

[0100] Because polyacrylamide has both water-absorbing and oil-absorbing properties, it can adsorb organic pollutants in solution. Furthermore, when glass fiber cloth is subjected to plasma discharge, a large number of charges are generated on its surface, significantly increasing its water absorption and consequently its oil absorption (i.e., its ability to adsorb organic pollutants).

[0101] Step 4: The fiber cloth that has adsorbed organic pollutants in the solution will simultaneously achieve the dual effects of effective pollutant degradation and fiber cloth plasma desorption during the subsequent plasma discharge.

[0102] Compared to Example 1, this example adds nonionic flocculant polyacrylamide, which can transfer the flocculant bound to pollutants onto the fiber cloth; the high concentration of pollutants on the fiber cloth is more conducive to subsequent plasma treatment.

[0103] This embodiment can treat organic wastewater more efficiently and at higher concentrations, and can handle high-concentration (COD value greater than 2000) wastewater to handle high-flow-rate wastewater.

Claims

1. A method for degrading industrial wastewater through a dual action of plasma adsorption, characterized in that, Includes the following steps: (1) Add industrial wastewater to the vertical water tank (1) and control the water line at half height. At this time, one of the two fixed pulleys of the pulley group (3) is above the water surface and the other is submerged in the water. The fiber cloth on the pulley group (3) is also half above the water and half below the water. The fiber cloth is activated carbon fiber cloth, graphite fiber cloth, aluminum silicate fiber cloth or glass fiber cloth. (2) Use a motor to drive the pulley group (3) to rotate. The linear speed of the pulley is 0.5cm-5cm / second. One side of the fiber cloth rises out of the water and the other side of the fiber cloth sinks into the water. At this time, the flat electrode group (4) is connected to the plasma power supply. (3) The fiber cloth above the water surface has a small amount of moisture. When it receives plasma discharge, it can effectively decompose organic matter in the wastewater. (4) The fiber cloth that is about to be submerged in water also undergoes plasma discharge before entering the water, which effectively improves the surface energy of the fiber cloth, thereby greatly improving the ability of the fiber cloth to adsorb organic matter. In this way, the fiber cloth on both sides of the fixed pulley adsorbs organic matter by plasma discharge on one side and degrades it by plasma discharge on the other side. The adsorption and desorption occur simultaneously and repeatedly to achieve the goal of degrading organic matter. (5) After the emission standards are met, turn off the plasma power supply, stop the motor, open the drain valve, and discharge the qualified wastewater.

2. The method for degrading industrial wastewater through dual plasma adsorption as described in claim 1, characterized in that, Includes the following steps: Step 1: Prepare a neutral solution of nonionic flocculant polyacrylamide with a mass concentration of 0.1%~0.3%, pH=7, and free of salt for later use; Step 2: Pour the prepared solution into the vertical water tank (1) according to the actual required amount; mix with the organic pollutant wastewater; Step 3: Start the motor to drive the fixed pulley to rotate. The linear speed of the fixed pulley is 0.5cm-5cm / second. The fiberglass cloth on both sides of the fixed pulley rises out of the water surface on one side and sinks into the water on the other side. At the same time, the plasma power supply is started to realize plasma dielectric barrier discharge. Because polyacrylamide has both water-absorbing and oil-absorbing properties, it can adsorb organic pollutants in the solution; When glass fiber cloth is subjected to plasma discharge, a large number of charges are generated on its surface, which greatly improves the water absorption of glass fiber cloth, and consequently greatly improves the oil absorption of glass fiber cloth. Step 4: The glass fiber cloth that has adsorbed organic pollutants in the solution will simultaneously achieve the dual effects of effective pollutant degradation and glass fiber cloth plasma desorption during the subsequent plasma discharge.

3. A plasma adsorption dual-action degradation device for industrial wastewater using the method described in claim 1, characterized in that, The system includes a vertical water tank (1), a T-shaped fixed bracket (2), a pulley system (3), and a flat electrode assembly (4). The vertical water tank (1) is made of engineering plastic, and the T-shaped fixed bracket (2) is installed upside down at the bottom center of the vertical water tank (1). The pulley system (3) consists of two fixed pulleys, which are fixedly installed on the middle rod of the T-shaped fixed bracket (2). The flexible rope of the pulley system (3) is made of fiber cloth. Flat electrode assemblies (4) are installed on both sides of the symmetrical flexible rope of the pulley system (3). The flat electrode assemblies (4) are connected to AC power. There are two flat electrode assemblies (4), which are fixed on the upper side wall of the vertical water tank (1). The gap between the flat electrode assemblies (4) and the fiberglass cloth surface is 2mm-4mm.

4. The plasma adsorption dual-action degradation equipment for industrial wastewater according to claim 3, characterized in that: At the center line of the engineering plastic vertical water tank (1), a fixed pulley is installed at the top and bottom. The edge of the fixed pulley is higher than the position where the glass fiber cloth is placed in the middle. The fixed pulley shaft is fixed in the corresponding round hole on the T-shaped fixed bracket (2). The glass fiber cloth is hung on the fixed pulley and fixed with appropriate tension. In addition, flat plate electrodes are symmetrically placed on both sides of the fixed pulley and the hanging glass fiber cloth.

5. The plasma adsorption dual-action degradation equipment for industrial wastewater according to claim 3, characterized in that: The pulley block (3) has two fixed pulleys, one of which is the driving pulley and the other is the driven pulley.

6. The plasma adsorption dual-action degradation equipment for industrial wastewater according to claim 3, characterized in that: The flat electrode assembly (4) is fixed by a slot on the wall of the vertical water tank (1).

7. The plasma adsorption dual-action degradation equipment for industrial wastewater according to claim 3, characterized in that: One of the flat plate electrodes is connected to a positive high-voltage high-frequency current, with a voltage of 10KV-20KV and a frequency of 20KHz-40KHz, while the other electrode is connected to a negative high-voltage high-frequency current, with a voltage of 10KV-20KV and a frequency of 20KHz-40KHz.

8. The plasma adsorption dual-action degradation equipment for industrial wastewater according to claim 3, characterized in that: The vertical water tank (1) is equipped with an inlet valve and a drain valve. The inlet valve is located at the top and the drain valve is located at the bottom.

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