An electrochemical treatment device for industrial wastewater

Abstract

The present invention discloses an electrochemical treatment device for industrial wastewater, comprising a magnetizing heating system, a magnetizing electrolysis system and a water outlet magnetizing collection system which are sequentially distributed, wherein the magnetizing heating system comprises a steam heating zone and a magnetic stirrer 1 arranged below the steam heating zone, the magnetizing electrolysis system comprises a magnetic stirrer 2, a cathode, an anode and a power supply, and the water outlet magnetizing collection system comprises a magnetic powder recovery filter element and a magnetic powder reflux pump. The present invention adopts an electrochemical treatment device for industrial wastewater of the above structure, which can effectively improve the electrolysis efficiency, prevent electrode fouling and clogging, and can be widely used in the pretreatment and deep treatment of industrial wastewater.

Description

Technical Field

[0001] The invention relates to the technical field of chemical equipment, and in particular to an electrochemical treatment device for industrial sewage. Background Art

[0002] The pharmaceutical, chemical, pharmaceutical, oil refining, industrial park and other industries will produce a large amount of wastewater. The wastewater from these industries generally has high COD, ammonia nitrogen and other indicators, and poor biodegradability. Generally, it is necessary to break the chain of macromolecular pollutants in the raw water to improve the biodegradability of the raw water. After biochemical industrial wastewater, COD can generally be reduced to about 100mg / L, but it is difficult to reduce it from 100mg / L by biochemical methods.

[0003] At present, the core components of electrochemical equipment used in industrial wastewater treatment are still electrodes, mainly tubular electrodes and plate electrodes. Although tubular electrodes have high electrolysis efficiency, their disadvantages are small electrode holes, easy clogging and low processing capacity. Plate electrodes have high processing capacity, but the large spacing between the electrode plates will reduce the electrolysis efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide an electrochemical treatment device for industrial sewage, which can effectively improve the electrolysis efficiency, prevent electrode clogging, and can be widely used in the pretreatment and deep treatment of industrial sewage.

[0005] To achieve the above-mentioned purpose, the present invention provides an electrochemical treatment device for industrial wastewater, comprising a magnetizing heating system, a magnetizing electrolysis system and a water outlet magnetization collection system which are distributed in sequence, wherein the magnetizing heating system comprises a steam heating zone and a magnetic agitator 1 arranged below the steam heating zone, the magnetizing electrolysis system comprises a magnetic agitator 2, a cathode, an anode and a power supply, and the water outlet magnetization collection system comprises a magnetic powder recovery filter element and a magnetic powder reflux pump.

[0006] Preferably, one end of the steam heating zone is connected to a steam inlet, and the other end is connected to a condensate outlet, a pneumatic valve is arranged above the steam inlet, a pipeline is arranged above the pneumatic valve, and an intermediate regulating valve is arranged on the pipeline.

[0007] Preferably, a check valve is provided at one end of the magnetic stirrer, and a water inlet is provided at the other end, and a water inlet regulating valve is provided on the water inlet.

[0008] Preferably, one end of the second magnetic stirrer is connected to a second pipeline, an intermediate regulating valve second is arranged on the second pipeline, a pneumatic valve second is arranged below the second intermediate regulating valve, and a check valve second is arranged below the second pneumatic valve.

[0009] Preferably, the anode is made of a boron-doped diamond electrode or a titanium-containing plate electrode, the cathode is made of 2205 or 316L material, and the spacing between the plate electrodes is set to 5-8 mm.

[0010] Preferably, a water outlet is provided at one end of the magnetic powder recovery filter element, the water outlet is connected to a pipe three, a water outlet regulating valve is provided on the pipe three, a pneumatic valve three is provided below the water outlet regulating valve, a check valve three is provided below the pneumatic valve three, a pipe four is provided below the check valve three, and the magnetic powder reflux pump is provided on the pipe four.

[0011] Preferably, a reducer is provided on the pipeline four, and the reducer is provided at both ends of the magnetic powder reflux pump. A check valve four and a butterfly valve are provided on the pipeline four, and the butterfly valve is provided above the reducer. The check valve four is provided at one end above the reducer, and the pipeline four is connected to the magnetic heating system.

[0012] Preferably, the power supply adopts a low-voltage power supply of 0-12V, and the current is set to 0-1200A; the equipment operating temperature is controlled at 65-80°C, and the equipment operating pressure is controlled at 0.35-0.55MPa.

[0013] Preferably, the rotation speed of the magnetic stirrer 1 is 120-150 r / min, and the rotation speed of the magnetic stirrer 2 is 70-90 r / min.

[0014] Preferably, the particle size of the magnetic powder is 200-300 mesh, the total iron content is not less than 70%, the magnetic material is not less than 98%, the density is not less than 4.9g / cm, and the amount of magnetic powder added to the sewage is 4-5kg / m 3 .

[0015] Therefore, the present invention adopts an industrial wastewater electrochemical treatment device of the above structure, which has the following

[0016] Beneficial effects:

[0017] (1) Mainly used for the pretreatment of raw water, breaking the chains of large molecules and difficult-to-degrade substances, and improving the biodegradability of industrial wastewater.

[0018] (2) The process of using a combination of plate electrodes and magnetic powder. During the electrolysis process, the magnetic powder can flocculate and aggregate the pollutants, which can prevent the electrode from being blocked by dirt. In addition, the magnetic powder can be charged, which can improve the electrolytic oxidation effect.

[0019] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A process flow chart of an embodiment of an electrochemical treatment device for industrial wastewater according to the present invention;

[0021] Reference numerals

[0022] 1. Magnetic heating system; 111. Steam heating zone; 121. Magnetic stirrer 1; 2. Magnetic electrolysis system; 211. Magnetic stirrer 2; 221. Cathode; 231. Anode; 241. Power supply; 3. Water outlet magnetic collection system; 31. Magnetic powder recovery filter element; 32. Magnetic powder reflux pump; 4. Steam inlet; 5. Condensate outlet; 6. Pneumatic valve 1; 7. Pipeline 1; 8. Intermediate regulating valve 1; 9. Check valve; 10. Water inlet; 11. Water inlet regulating valve; 12. Pipeline 2; 13. Intermediate regulating valve 2; 14. Water outlet; 15. Pipeline 3; 16. Water outlet regulating valve; 17. Pipeline 4; 18. Reducer; 19. Butterfly valve; 20. Pneumatic valve 2; 21. Pneumatic valve 3; 22. Check valve 2; 23. Check valve 3; 24. Check valve 4. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0024] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] Example

[0026] The present invention provides an electrochemical treatment device for industrial sewage, comprising a magnetizing heating system 1, a magnetizing electrolysis system 2 and an effluent magnetizing collection system 3 which are sequentially distributed.

[0027] The magnetic heating system 1 includes a steam heating zone 111 and a magnetic stirrer 121 arranged below the steam heating zone 111. The rotation speed of the magnetic stirrer 121 is 120-150r / min. A check valve 9 is arranged at one end of the magnetic stirrer 121. The check valve 9 automatically opens and closes the valve disc depending on the flow of the medium itself, which can prevent the medium from flowing back and the pump and the driving motor from reversing. A water inlet 10 is arranged at the other end, and a water inlet regulating valve 11 is arranged on the water inlet 10 to adjust the flow rate and capacity of the water inlet. A steam inlet 4 is connected to one end of the steam heating zone 111, and a condensate outlet 5 is connected to the other end. A pneumatic valve 6 is arranged above the steam inlet 4 to control the on and off of the fluid. A pipeline 7 is arranged above the pneumatic valve 6, and an intermediate regulating valve 8 is arranged on the pipeline 7. The magnetic heating system 1 is connected to the magnetic electrolysis system 2 through the pipeline 7. The intermediate regulating valve 8 is arranged to control the flow rate and capacity of the medium.

[0028] The magnetized electrolysis system 2 includes a magnetic stirrer 211, a cathode 221, an anode 231 and a power supply 241. The rotation speed of the magnetic stirrer 211 is 70-90r / min. The stirring speed of the magnetic stirrer 211 is lower than the rotation speed of the magnetic stirrer 121, which can improve the effect of electrolysis. One end of the magnetic stirrer 211 is connected to a pipeline 212, and an intermediate regulating valve 213 is arranged on the pipeline 212. The magnetized electrolysis system 2 is connected to the water outlet magnetization system 3 through the pipeline 212. The intermediate regulating valve 213 can control the flow rate and capacity of the medium. A pneumatic valve 210 is arranged below the intermediate regulating valve 213, and a check valve 212 is arranged below the pneumatic valve 210. The anode 231 uses a boron-doped diamond electrode or a titanium-containing plate electrode, the cathode 221 uses 2205 or 316L material, and the spacing of the plate electrodes is set to 5-8mm. The plate electrodes are used and the spacing is adjusted to solve the problem that the electrode plates of the existing plate electrodes have too large spacing, which reduces the electrolysis efficiency. The power supply 241 uses a low-voltage power supply of 0-12V, the current is set to 0-1200A, the equipment operating temperature is controlled at 65-80°C, and the equipment operating pressure is controlled at 0.35-0.55MPa.

[0029] The water outlet magnetism collecting system 3 includes a magnetic powder recovery filter element 31 and a magnetic powder reflux pump 32. A water outlet 14 is provided at one end of the magnetic powder recovery filter element 31. A pipe 3 15 is connected to the water outlet 14. A water outlet regulating valve 16 is provided on the pipe 3 15 to adjust the flow rate and capacity of the water outlet. A pneumatic valve 3 21 is provided below the water outlet regulating valve 16. A check valve 3 23 is provided below the pneumatic valve 3 21. A pipe 4 17 is provided below the check valve 3 23. The pipe 4 17 connects the water outlet magnetism collecting system 3 with the magnetic heating system 1, and forms a circulation loop together with the pipe 1 7 and the pipe 2 12. A magnetic powder reflux pump 32 is provided on the pipe 4 17 to reflux the sewage of the system. A reducer 18 is provided on the pipe 4 17. The reducer 18 is provided at both ends of the magnetic powder reflux pump 32. The reducing pipe 18 can prevent gas turbidity. The pipeline 4 17 is provided with a check valve 4 24 and a butterfly valve 19, which mainly play the role of cutting off and throttling. The butterfly valve 19 is arranged above the reducer 18, and the check valve 4 24 is arranged at one end above the reducer 18, and the pipeline 4 17 is connected to the magnetic heating system 1.

[0030] The particle size of the magnetic powder is 200-300 mesh, the total iron content is not less than 70%, the magnetic material is not less than 98%, the density is not less than 4.9g / cm, and the amount of magnetic powder added to the sewage is 4-5kg / m3. The process of combining plate electrodes and magnetic powder is adopted. During the electrolysis process, the magnetic powder can flocculate and aggregate the pollutants, which can prevent the electrode from being blocked, and the magnetic powder can be charged, which can improve the electrolytic oxidation effect.

[0031] When in use, when the equipment is started for the first time, it is necessary to first introduce industrial sewage from the water inlet 10 to fill the equipment with industrial sewage, close the water inlet regulating valve 11, and then perform steam heating to increase the system temperature to 65-80°C, and at the same time, turn on the magnetic stirrer 1 121 and the magnetic stirrer 2 211, add magnetic powder, turn on the magnetic powder reflux pump 32, and reflux the system sewage, and finally turn on the electrode power supply 241 to electrolyze and oxidize the sewage until the sewage is discharged from the water outlet 14. At this time, the sewage in the entire equipment is in a qualified state, open the water inlet regulating valve 11 and the water outlet regulating valve 16, adjust the flow and pressure, and perform continuous water inlet and outlet operations.

[0032] Therefore, the industrial wastewater electrochemical treatment equipment of the present invention using the above structure can effectively improve the electrolysis efficiency, prevent electrode clogging, and can be widely used in the pretreatment and deep treatment of industrial wastewater.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. An electrochemical treatment device for industrial wastewater, characterized in that: It includes a magnetizing heating system, a magnetizing electrolysis system and a water outlet magnetization collection system which are sequentially distributed. The magnetizing heating system includes a steam heating area and a magnetic stirrer 1 arranged below the steam heating area. The magnetizing electrolysis system includes a magnetic stirrer 2, a cathode, an anode and a power supply. The water outlet magnetization collection system includes a magnetic powder recovery filter element and a magnetic powder reflux pump. A water outlet is provided at one end of the magnetic powder recovery filter element, a pipe three is connected to the water outlet, a water outlet regulating valve is provided on the pipe three, a pneumatic valve three is provided below the water outlet regulating valve, a check valve three is provided below the pneumatic valve three, a pipe four is provided below the check valve three, and the magnetic powder reflux pump is provided on the pipe four; The pipeline four is provided with a reducer, and the reducer is arranged at both ends of the magnetic powder reflux pump. The pipeline four is provided with a check valve four and a butterfly valve, and the butterfly valve is arranged above the reducer. The check valve four is arranged at one end above the reducer, and the pipeline four is connected to the magnetic heating system.

2. The electrochemical treatment equipment for industrial wastewater according to claim 1, characterized in that: One end of the steam heating zone is connected to a steam inlet, and the other end is connected to a condensate outlet. A pneumatic valve 1 is arranged above the steam inlet, a pipeline 1 is arranged above the pneumatic valve, and an intermediate regulating valve 1 is arranged on the pipeline 1.

3. The electrochemical treatment equipment for industrial wastewater according to claim 2, characterized in that: A check valve is arranged at one end of the magnetic stirrer, and a water inlet is arranged at the other end, and a water inlet regulating valve is arranged on the water inlet.

4. The electrochemical treatment equipment for industrial wastewater according to claim 3 is characterized in that: One end of the second magnetic stirrer is connected to a second pipeline, on which a second intermediate regulating valve is arranged, below which a second pneumatic valve is arranged, and below which a second check valve is arranged.

5. The electrochemical treatment equipment for industrial wastewater according to claim 4, characterized in that: The anode is made of a boron-doped diamond electrode or a titanium-containing plate electrode, the cathode is made of 2205 or 316L material, and the spacing between the plate electrodes is set to 5-8 mm.

6. The electrochemical treatment equipment for industrial wastewater according to claim 5, characterized in that: The power supply adopts a low-voltage power supply of 0-12V, and the current is set to 0-1200A; the equipment operating temperature is controlled at 65-80°C, and the equipment operating pressure is controlled at 0.35-0.55MPa.

7. The electrochemical treatment equipment for industrial wastewater according to claim 6, characterized in that: The rotation speed of the magnetic stirrer 1 is 120-150 r / min, and the rotation speed of the magnetic stirrer 2 is 70-90 r / min.

8. The electrochemical treatment equipment for industrial wastewater according to claim 7, characterized in that: The particle size of the magnetic powder is 200-300 mesh, the total iron content is not less than 70%, the magnetic material is not less than 98%, the density is not less than 4.9g / cm3, and the amount of magnetic powder added to the sewage is 4-5kg / m3. 3 .

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