Fenton automatic dosing system

Abstract

The invention discloses an automatic Fenton dosing system, relates to the technical field of wastewater treatment, and aims at solving the problem that an existing Fenton system needs to easily cause waste of chemicals and human resources. The technical scheme is characterized in that the system comprises a bottom plate, an automatic dosing control cabinet, a wastewater treatment device, a chemical dosing device, an aeration device, a stirring device, a first pH meter and a second pH meter; by arranging the automatic dosing control cabinet, the first pH meter and the second pH meter, the pH change of water quality can be detected in real time, and information is transmitted to the automatic dosing control cabinet, so that the automatic dosing control cabinet controls the dosing device to add chemicals into the wastewater treatment device according to the information feedback condition; and the dosing amount of the medicament is regulated in a targeted manner, so that the conventional manual dosing control manner is replaced, the dosage of the medicament can be accurately controlled, the medicament loss is reduced, the manpower resource is saved, and the operation cost of a sewage plant is reduced.

Description

Technical Field

[0001] The invention belongs to the field of wastewater treatment, in particular to a Fenton automatic dosing system. Background Art

[0002] Due to the need for sewage treatment, some industrial sewage plants are equipped with Fenton dosing devices for wastewater treatment. The pH value of the wastewater is adjusted between 2 and 4 by adding concentrated sulfuric acid. After acidification, hydrogen peroxide and ferrous sulfate are added in proportion for deep oxidation. Finally, it is neutralized with sodium hydroxide and then enters the next treatment unit for treatment. The Fenton reaction is an inorganic chemical reaction. The process is that a mixed solution of hydrogen peroxide (H2O2) and divalent iron ions Fe2+ oxidizes many known organic compounds such as carboxylic acids, alcohols, and esters into inorganic states. The reaction has a high ability to remove difficult-to-degrade organic pollutants and is widely used in the treatment of printing and dyeing wastewater, oil-containing wastewater, phenol-containing wastewater, coking wastewater, nitrobenzene-containing wastewater, diphenylamine wastewater and other wastewaters. The existing Fenton system requires manual control of the addition of chemicals to adjust the water quality, which is easy to cause waste of chemicals and human resources.

[0003] In summary, the present invention provides a Fenton automatic dosing system to solve the above problems. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a Fenton automatic dosing system, which has the advantage that, through the automatic dosing control cabinet, the first pH meter and the second pH meter, the pH change of water quality can be detected in real time, and the information can be transmitted to the automatic dosing control cabinet, so that the drug dosing device can be controlled to add drugs to the wastewater treatment device according to the information feedback, and the amount of drug added can be adjusted in a targeted manner, thereby replacing the existing manual control method of adding drugs, and can accurately control the amount of drugs used, reduce drug loss, save human resources, and reduce the operating cost of the sewage treatment plant.

[0005] To achieve the above object, the present invention provides the following technical solutions: The Fenton automatic dosing system comprises a base plate, an automatic dosing control cabinet, a wastewater treatment device, a drug dosing device, an aeration device, a stirring device, a first pH meter and a second pH meter, characterized in that: the automatic dosing control cabinet is arranged on the upper side of the base plate, the wastewater treatment device is arranged on the upper side of the base plate, the drug dosing device is arranged on the upper side of the base plate, the two aeration devices are arranged in the wastewater treatment device, the three stirring devices are arranged in the wastewater treatment device, the first pH meter and the second pH meter are installed in the wastewater treatment device, the first pH meter and the second pH meter are electrically connected to the automatic dosing control cabinet, and the drug dosing device is electrically connected to the automatic dosing control cabinet.

[0006] By setting up the automatic dosing control cabinet, the first pH meter and the second pH meter, the pH change of the water quality can be detected in real time, and the information can be transmitted to the automatic dosing control cabinet, so that it can control the drug dosing device to add drugs to the wastewater treatment device according to the information feedback, and adjust the dosage of the drug in a targeted manner.

[0007] The present invention is further configured as follows: the drug dosing device comprises a concentrated sulfuric acid storage box, a hydrogen peroxide storage box, a ferrous sulfate storage box, a liquid alkali storage box, a concentrated sulfuric acid dosing pump, a hydrogen peroxide dosing pump, a ferrous sulfate dosing pump and a liquid alkali dosing pump, wherein the concentrated sulfuric acid storage box, the hydrogen peroxide storage box, the ferrous sulfate storage box and the liquid alkali storage box are sequentially mounted on the upper side of the bottom plate from left to right, and the concentrated sulfuric acid dosing pump, the hydrogen peroxide dosing pump, the ferrous sulfate dosing pump and the liquid alkali dosing pump are sequentially mounted on the bottom plate from left to right side, the concentrated sulfuric acid dosing pump input end is connected to one side of the concentrated sulfuric acid storage tank through a connecting pipe, the hydrogen peroxide dosing pump input end is connected to one side of the hydrogen peroxide storage tank through a connecting pipe, the ferrous sulfate dosing pump input end is connected to one side of the ferrous sulfate storage tank through a connecting pipe, and the liquid alkali dosing pump input end is connected to one side of the liquid alkali storage tank through a connecting pipe, and the concentrated sulfuric acid dosing pump, the hydrogen peroxide dosing pump, the ferrous sulfate dosing pump and the liquid alkali dosing pump are all electrically connected to the automatic dosing control cabinet.

[0008] The drug dosing device can be set up to cooperate with the automatic dosing control cabinet to accurately control the amount of medicine used and reduce the loss of medicine.

[0009] The present invention is further configured as follows: the wastewater treatment device includes a first PH regulating box, a first Fenton reaction box, a second Fenton reaction box, a third Fenton reaction box, a second PH regulating box, a coagulation box and an inclined tube sedimentation tank; the first PH regulating box, the first Fenton reaction box, the second Fenton reaction box, the third Fenton reaction box, the second PH regulating box, the coagulation box and the inclined tube sedimentation tank are all fixedly installed on the upper side of the bottom plate; a water pump and a water pipe are fixedly installed between the first PH regulating box, the first Fenton reaction box, the second Fenton reaction box, the third Fenton reaction box, the second PH regulating box, the coagulation box and the inclined tube sedimentation tank.

[0010] By setting up the wastewater treatment device, the wastewater can be automatically treated by adding medicine through the medicine adding device and the automatic medicine adding control cabinet.

[0011] The present invention is further configured as follows: a first dosing tube is fixedly installed between the output end of the concentrated sulfuric acid dosing pump and the upper side of the first PH regulating box, a second dosing tube is fixedly installed between the output end of the hydrogen peroxide dosing pump and the upper side of the first Fenton reaction box, a third dosing tube is fixedly installed between the output end of the ferrous sulfate dosing pump and the upper side of the first Fenton reaction box, a fourth dosing tube is fixedly installed between the output end of the liquid alkali dosing pump and the upper side of the second PH regulating box, the first pH meter is located on one side of the inner wall of the first Fenton reaction box, the second pH meter is located between the inner walls of the second PH regulating box, the two aeration devices are respectively arranged at the bottom of the inner walls of the first Fenton reaction box and the second Fenton reaction box, and the three stirring devices are respectively arranged between the third Fenton reaction box, the second PH regulating box and the inner wall of the coagulation box.

[0012] By providing the first dosing pipe, the second dosing pipe, the third dosing pipe and the fourth dosing pipe, it is convenient for the dosing pump to add the medicine into the wastewater treatment device.

[0013] The present invention is further configured as follows: flow meters and electromagnetic ball valves are fixedly installed around the first dosing pipe, the second dosing pipe, the third dosing pipe and the fourth dosing pipe, and the flow meters and the electromagnetic ball valves are electrically connected to the automatic dosing control cabinet.

[0014] By setting the electromagnetic ball valve, the first, second, third and fourth dosing pipes can be closed by the automatic dosing control cabinet during maintenance to shut off the drug supply.

[0015] The present invention is further configured as follows: the aeration device includes an aeration fan, a main pipe, a branch pipe and an aeration head, the aeration fan is fixedly installed on the upper side of the base plate, the main pipe is fixedly installed on the output end of the aeration fan, a plurality of branch pipes are respectively fixedly installed on both sides of the main pipe, a plurality of aeration heads are respectively fixedly installed on the upper sides of a plurality of branch pipes, and the main pipe, the branch pipe and the aeration head are all located at the bottom of the inner wall of the first Fenton reaction box and the second Fenton reaction box.

[0016] The wastewater can be treated by aeration through the aeration device.

[0017] The present invention is further configured as follows: the stirring device includes a driving motor, a stirring shaft and stirring blades, the driving motor is fixedly mounted on the third Fenton reaction box, the second pH adjustment box and the upper side of the coagulation box, the stirring shaft is fixedly mounted on the output end of the driving motor, and the stirring blades are respectively fixedly mounted on both sides of the stirring shaft.

[0018] By setting up a stirring device, the medicine can be fully mixed with the wastewater.

[0019] The present invention is further configured as follows: a PAM dosing point is arranged on the upper side of the coagulation box.

[0020] By setting up the PAM dosing point, it is convenient to add PAM into the coagulation box.

[0021] The present invention is further configured as follows: a water inlet is provided on one side of the first PH regulating tank, and a water outlet is provided on one side of the inclined tube sedimentation tank.

[0022] By setting the water inlet and the water outlet, it is convenient to send the wastewater into and discharge it from the dosing system.

[0023] In summary, the beneficial technical effects of the present invention are: By setting up the automatic dosing control cabinet, the first pH meter and the second pH meter, the pH change of water quality can be detected in real time, and the information can be transmitted to the automatic dosing control cabinet, so that it can control the drug dosing device to add drugs to the wastewater treatment device according to the information feedback, and adjust the amount of drug added in a targeted manner, thereby replacing the existing manual control method of adding drugs, and can accurately control the amount of drugs used, reduce drug loss, save human resources, and reduce the operating costs of sewage treatment plants.

[0024] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 This is a schematic diagram of the main structure of the Fenton automatic dosing system of the present invention; Figure 2 It is a side view structural schematic diagram of the Fenton automatic dosing system of the present invention; Figure 3 It is a schematic diagram of the structure of the aeration device of the present invention; Figure 4 It is a schematic diagram of the structure of the stirring device of the present invention; Figure 5 This is a schematic diagram of the connection structure of the Fenton automatic dosing system of the present invention; In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Bottom plate; 2. Automatic dosing control cabinet; 3. Wastewater treatment device; 4. Drug dosing device; 5. First PH adjustment box; 6. First Fenton reaction box; 7. Second Fenton reaction box; 8. Third Fenton reaction box; 9. Second PH adjustment box; 10. Coagulation box; 11. Inclined tube sedimentation tank; 12. Water inlet; 13. Water outlet; 14. Concentrated sulfuric acid storage box; 15. Hydrogen peroxide storage box; 16. Ferrous sulfate storage box; 17. Liquid alkali storage box; 18. Aeration device; 19. Stirring device; 20. First dosing pipe; 2 1. The second dosing pipe; 22. The third dosing pipe; 23. The fourth dosing pipe; 24. The concentrated sulfuric acid dosing pump; 25. The hydrogen peroxide dosing pump; 26. The ferrous sulfate dosing pump; 27. The liquid alkali dosing pump; 28. The flow meter; 29. ​​The electromagnetic ball valve; 30. The conveying device; 31. The water pump; 32. The water pipe; 33. The first pH meter; 34. The aeration fan; 36. The main pipe; 37. The branch pipe; 38. The aeration head; 39. The driving motor; 40. The stirring shaft; 41. The stirring blade; 42. The PAM dosing point; 43. The second pH meter. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0027] Reference Figure 1-5 , is a Fenton automatic dosing system disclosed in the present invention, comprising a base plate 1, an automatic dosing control cabinet 2, a wastewater treatment device 3, a drug dosing device 4, an aeration device 18, a stirring device 19, a first pH meter 33 and a second pH meter 43, characterized in that: the automatic dosing control cabinet 2 is arranged on the upper side of the base plate 1, the wastewater treatment device 3 is arranged on the upper side of the base plate 1, the drug dosing device 4 is arranged on the upper side of the base plate 1, the two aeration devices 18 are arranged in the wastewater treatment device 3, the three stirring devices 19 are arranged in the wastewater treatment device 3, the first pH meter 33 and the second pH meter 43 are installed in the wastewater treatment device 3, the first pH meter 33 and the second pH meter 43 are both electrically connected to the automatic dosing control cabinet 2, and the drug dosing device 4 is electrically connected to the automatic dosing control cabinet 2.

[0028] The application of one aspect of this embodiment is: the automatic dosing program of the reagent and the various thresholds of the Fenton automatic dosing system preset according to actual conditions, the parameters such as the reagent ratio are written into the automatic dosing control cabinet 2, so that the dynamic dosing control cabinet 2 can automatically adjust the dosage of the reagent in each section according to the real-time water quality data, and then send the wastewater into the wastewater treatment device 3 through the water inlet 12, and then monitor the wastewater in real time through the first pH meter 33 and the second pH meter 43, and transmit the information to the automatic dosing control cabinet 2. The automatic dosing control cabinet 2 controls the drug dosing device 4 to add drugs to the wastewater treatment device 3 according to the information feedback, and adjusts the dosage of the reagent in a targeted manner. At the same time, the aeration device 18 is started to aerate the wastewater, and the stirring device 19 is used to stir the wastewater, so that the drug can be fully integrated with the wastewater.

[0029] Reference Figure 1-2The drug dosing device 4 of the present embodiment includes a concentrated sulfuric acid storage tank 14, a hydrogen peroxide storage tank 15, a ferrous sulfate storage tank 16, a liquid alkali storage tank 17, a concentrated sulfuric acid dosing pump 24, a hydrogen peroxide dosing pump 25, a ferrous sulfate dosing pump 26 and a liquid alkali dosing pump 27. The concentrated sulfuric acid storage tank 14, the hydrogen peroxide storage tank 15, the ferrous sulfate storage tank 16 and the liquid alkali storage tank 17 are sequentially installed on the upper side of the bottom plate 1 from left to right, and the concentrated sulfuric acid dosing pump 24, the hydrogen peroxide dosing pump 25, the ferrous sulfate dosing pump 26 and the liquid alkali dosing pump 27 are sequentially installed on the upper side of the bottom plate 1 from left to right. The input end of the concentrated sulfuric acid dosing pump 24 is connected to one side of the concentrated sulfuric acid storage tank 14 through a connecting pipe. The input end of the hydrogen peroxide dosing pump 25 is connected to one side of the hydrogen peroxide storage tank 15 through a connecting pipe, the input end of the ferrous sulfate dosing pump 26 is connected to one side of the ferrous sulfate storage tank 16 through a connecting pipe, and the input end of the liquid alkali dosing pump 27 is connected to one side of the liquid alkali storage tank 17 through a connecting pipe. The concentrated sulfuric acid dosing pump 24, the hydrogen peroxide dosing pump 25, the ferrous sulfate dosing pump 26 and the liquid alkali dosing pump 27 are all electrically connected to the automatic dosing control cabinet 2. The wastewater treatment device 3 includes a first PH regulating box 5, a first Fenton reaction box 6, a second Fenton reaction box 7, a third Fenton reaction box 8, a second PH regulating box 9, a coagulation box 10 and an inclined tube sedimentation tank 11. The first The PH regulating box 5, the first Fenton reaction box 6, the second Fenton reaction box 7, the third Fenton reaction box 8, the second PH regulating box 9, the coagulation box 10 and the inclined tube sedimentation tank 11 are all fixedly installed on the upper side of the bottom plate 1, and a water pump 31 and a water pipe 32 are fixedly installed between the first PH regulating box 5, the first Fenton reaction box 6, the second Fenton reaction box 7, the third Fenton reaction box 8, the second PH regulating box 9, the coagulation box 10 and the inclined tube sedimentation tank 11. A first dosing pipe 20 is fixedly installed between the output end of the concentrated sulfuric acid dosing pump 24 and the upper side of the first PH regulating box 5, and a second dosing pipe 20 is fixedly installed between the output end of the hydrogen peroxide dosing pump 25 and the upper side of the first Fenton reaction box 6. 21, a third dosing pipe 22 is fixedly installed between the output end of the ferrous sulfate dosing pump 26 and the upper side of the first Fenton reaction box 6, a fourth dosing pipe 23 is fixedly installed between the output end of the liquid alkali dosing pump 27 and the upper side of the second PH regulating box 9, the first pH meter 33 is located on one side of the inner wall of the first Fenton reaction box 6, the second pH meter 43 is located between the inner walls of the second PH regulating box 9, two aeration devices 18 are respectively arranged at the bottom of the inner walls of the first Fenton reaction box 6 and the second Fenton reaction box 7, three stirring devices 19 are respectively arranged between the inner walls of the third Fenton reaction box 8, the second PH regulating box 9 and the coagulation box 10, and a PAM dosing point 42 is arranged on the upper side of the coagulation box 10.

[0030] By setting the drug dosing device 4, the first pH meter 33 and the second pH meter 43 can detect the pH change of the water quality in real time, and after the information is transmitted to the automatic dosing control cabinet 2, the automatic dosing control cabinet 2 controls the concentrated sulfuric acid dosing pump 24, the hydrogen peroxide dosing pump 25, the ferrous sulfate dosing pump 26 and the liquid alkali dosing pump 27 through the information feedback to add the drugs in the concentrated sulfuric acid storage tank 14, the hydrogen peroxide storage tank 15, the ferrous sulfate storage tank 16 and the liquid alkali storage tank 17 into the wastewater treatment device 3, and relies on the analog quantity of the command of the automatic dosing control cabinet 2 To control the operation frequency of dosing and to adjust the dosage of the agent in a targeted manner, so as to accurately control the dosage of the agent and reduce the loss of the agent. By setting up the wastewater treatment device 3, the wastewater can be placed in the first PH regulating box 5, and the concentrated sulfuric acid dosing pump 24 is started to add concentrated sulfuric acid into the first PH regulating box 5, so that the pH of the wastewater is kept within the set range, and then the wastewater is sent to the first Fenton reaction box 6, and the water quality is tested by the first pH meter 33. After the information is transmitted to the automatic dosing control cabinet 2, the automatic dosing control cabinet 2. Control the hydrogen peroxide dosing pump 25 and the ferrous sulfate dosing pump 26 to add hydrogen peroxide and ferrous sulfate into the first Fenton reaction box 6 according to the analog amount of the instruction, and start the aeration device 18 to aerate the wastewater so that the wastewater undergoes Fenton reaction, and then send the wastewater into the second Fenton reaction box 7 for aeration treatment again, and then send the wastewater into the third Fenton reaction box 8, and start the stirring device 19 to stir the wastewater so that the wastewater and the drug are fully integrated, and then send the wastewater into the second PH adjustment box 9 so that the wastewater in the second PH adjustment box 9 passes through The second pH meter 43 detects the wastewater again, so that the automatic dosing control cabinet 2 controls the liquid alkali dosing pump 27 to add the liquid alkali into the second pH regulating tank 9 according to the analog amount of the instruction, and starts the stirring device 19 to stir the wastewater so that the wastewater and the liquid alkali are fully integrated, and then the wastewater is sent to the coagulation tank 10, and PAM is added thereto, and the stirring device 19 is started to stir the wastewater so that the wastewater and the PAM are fully integrated, and then the wastewater is sent to the inclined tube sedimentation tank 11 for sedimentation, thereby being able to accurately control the amount of reagent used and reduce the loss of reagent.

[0031] Reference Figure 2 In this embodiment, flow meters 28 and electromagnetic ball valves 29 are fixedly installed around the first dosing pipe 20, the second dosing pipe 21, the third dosing pipe 22 and the fourth dosing pipe 23, and the flow meters 28 and the electromagnetic ball valves 29 are electrically connected to the automatic dosing control cabinet 2.

[0032] By setting the electromagnetic ball valve 29, the first dosing pipe 20, the second dosing pipe 21, the third dosing pipe 22 and the fourth dosing pipe 23 can be closed by the automatic dosing control cabinet 2 during maintenance, so that the drug supply can be shut off during maintenance.

[0033] Reference Figure 3-4 The aeration device 18 of this embodiment includes an aeration fan 34, a main pipe 36, a branch pipe 37 and an aeration head 38. The aeration fan 34 is fixedly installed on the upper side of the bottom plate 1, the main pipe 36 is fixedly installed at the output end of the aeration fan 34, multiple branch pipes 37 are respectively fixedly installed on both sides of the main pipe 36, and multiple aeration heads 38 are respectively fixedly installed on the upper sides of multiple branch pipes 37. The main pipe 36, the branch pipe 37 and the aeration head 38 are all located at the bottom of the inner wall of the first Fenton reaction box 6 and the second Fenton reaction box 7. The stirring device 19 includes a driving motor 39, a stirring shaft 40 and stirring blades 41. The driving motor 39 is fixedly installed on the upper sides of the third Fenton reaction box 8, the second PH adjustment box 9 and the coagulation box 10. The stirring shaft 40 is fixedly installed at the output end of the driving motor 39. The stirring blades 41 are respectively fixedly installed on both sides of the stirring shaft 40. A water inlet 12 is provided on one side of the first PH adjustment box 5, and a water outlet 13 is provided on one side of the inclined tube sedimentation tank 11.

[0034] By starting the aeration fan 34, external air can be sent into the first Fenton reaction box 6 and the second Fenton reaction box 7 through the main pipe 36, the branch pipe 37 and the aeration head 38, so that the wastewater can be aerated. By starting the stirring device 19, the driving motor 39 can be started to drive the stirring shaft 40 and the stirring blade 41 to rotate, so that the wastewater is stirred, so that the medicine can be fully integrated with the wastewater. By setting the water inlet 12 and the water outlet 13, the wastewater can be easily sent into and discharged from the dosing system.

[0035] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A Fenton automatic dosing system, comprising a base plate (1), an automatic dosing control cabinet (2), a wastewater treatment device (3), a drug dosing device (4), an aeration device (18), a stirring device (19), a first pH meter (33) and a second pH meter (43), characterized in that: The automatic dosing control cabinet (2) is arranged on the upper side of the base plate (1), the wastewater treatment device (3) is arranged on the upper side of the base plate (1), the drug dosing device (4) is arranged on the upper side of the base plate (1), the two aeration devices (18) are arranged in the wastewater treatment device (3), the three stirring devices (19) are arranged in the wastewater treatment device (3), the first pH meter (33) and the second pH meter (43) are installed in the wastewater treatment device (3), the first pH meter (33) and the second pH meter (43) are electrically connected to the automatic dosing control cabinet (2), and the drug dosing device (4) is electrically connected to the automatic dosing control cabinet (2).

2. The Fenton automatic dosing system according to claim 1, characterized in that: The drug dosing device (4) comprises a concentrated sulfuric acid storage tank (14), a hydrogen peroxide storage tank (15), a ferrous sulfate storage tank (16), a liquid alkali storage tank (17), a concentrated sulfuric acid dosing pump (24), a hydrogen peroxide dosing pump (25), a ferrous sulfate dosing pump (26) and a liquid alkali dosing pump (27), wherein the concentrated sulfuric acid storage tank (14), the hydrogen peroxide storage tank (15), the ferrous sulfate storage tank (16) and the liquid alkali storage tank (17) are sequentially mounted on the upper side of the bottom plate (1) from left to right, and the concentrated sulfuric acid dosing pump (24), the hydrogen peroxide dosing pump (25), the ferrous sulfate dosing pump (26) and the liquid alkali dosing pump (27) are sequentially mounted on the upper side of the bottom plate (1) from left to right. On the upper side of the bottom plate (1), an input end of the concentrated sulfuric acid dosing pump (24) is connected to one side of the concentrated sulfuric acid storage tank (14) through a connecting pipe, an input end of the hydrogen peroxide dosing pump (25) is connected to one side of the hydrogen peroxide storage tank (15) through a connecting pipe, an input end of the ferrous sulfate dosing pump (26) is connected to one side of the ferrous sulfate storage tank (16) through a connecting pipe, and an input end of the liquid alkali dosing pump (27) is connected to one side of the liquid alkali storage tank (17) through a connecting pipe. The concentrated sulfuric acid dosing pump (24), the hydrogen peroxide dosing pump (25), the ferrous sulfate dosing pump (26) and the liquid alkali dosing pump (27) are all electrically connected to the automatic dosing control cabinet (2).

3. The Fenton automatic dosing system according to claim 2, characterized in that: The wastewater treatment device (3) comprises a first pH regulating box (5), a first Fenton reaction box (6), a second Fenton reaction box (7), a third Fenton reaction box (8), a second pH regulating box (9), a coagulation box (10) and an inclined tube sedimentation tank (11); the first pH regulating box (5), the first Fenton reaction box (6), the second Fenton reaction box (7), the third Fenton reaction box (8), the second pH regulating box (9), the coagulation box (10) and the inclined tube sedimentation tank (11) are all fixedly installed on the upper side of the bottom plate (1); and a water pump (31) and a water pipe (32) are fixedly installed between the first pH regulating box (5), the first Fenton reaction box (6), the second Fenton reaction box (7), the third Fenton reaction box (8), the second pH regulating box (9), the coagulation box (10) and the inclined tube sedimentation tank (11).

4. The Fenton automatic dosing system according to claim 3, characterized in that: A first dosing pipe (20) is fixedly installed between the output end of the concentrated sulfuric acid dosing pump (24) and the upper side of the first pH regulating box (5), a second dosing pipe (21) is fixedly installed between the output end of the hydrogen peroxide dosing pump (25) and the upper side of the first Fenton reaction box (6), a third dosing pipe (22) is fixedly installed between the output end of the ferrous sulfate dosing pump (26) and the upper side of the first Fenton reaction box (6), and a liquid alkali dosing pump (27) is fixedly installed between the output end of the second pH regulating box (9). The fourth dosing pipe (23), the first pH meter (33) is located on one side of the inner wall of the first Fenton reaction box (6), the second pH meter (43) is located between the inner walls of the second pH regulating box (9), the two aeration devices (18) are respectively arranged at the bottom of the inner walls of the first Fenton reaction box (6) and the second Fenton reaction box (7), and the three stirring devices (19) are respectively arranged between the inner walls of the third Fenton reaction box (8), the second pH regulating box (9) and the coagulation box (10).

5. The Fenton automatic dosing system according to claim 4, characterized in that: A flow meter (28) and an electromagnetic ball valve (29) are fixedly installed around the first dosing pipe (20), the second dosing pipe (21), the third dosing pipe (22) and the fourth dosing pipe (23), and the flow meter (28) and the electromagnetic ball valve (29) are electrically connected to the automatic dosing control cabinet (2).

6. The Fenton automatic dosing system according to claim 4, characterized in that: The aeration device (18) comprises an aeration fan (34), a main pipe (36), a branch pipe (37) and an aeration head (38); the aeration fan (34) is fixedly mounted on the upper side of the base plate (1); the main pipe (36) is fixedly mounted on the output end of the aeration fan (34); a plurality of branch pipes (37) are respectively fixedly mounted on both sides of the main pipe (36); a plurality of aeration heads (38) are respectively fixedly mounted on the upper sides of a plurality of branch pipes (37); the main pipe (36), the branch pipe (37) and the aeration head (38) are all located at the bottom of the inner wall of the first Fenton reaction box (6) and the second Fenton reaction box (7).

7. The Fenton automatic dosing system according to claim 4, characterized in that: The stirring device (19) comprises a driving motor (39), a stirring shaft (40) and stirring blades (41); the driving motor (39) is fixedly mounted on the upper sides of the third Fenton reaction box (8), the second pH adjustment box (9) and the coagulation box (10); the stirring shaft (40) is fixedly mounted on the output end of the driving motor (39); and the stirring blades (41) are respectively fixedly mounted on both sides of the stirring shaft (40).

8. The Fenton automatic dosing system according to claim 7, characterized in that: A PAM dosing point (42) is provided on the upper side of the coagulation tank (10).

9. The Fenton automatic dosing system according to claim 4, characterized in that: A water inlet (12) is provided on one side of the first pH regulating box (5), and a water outlet (13) is provided on one side of the inclined tube sedimentation tank (11).

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