Anodic oxidation production wastewater treatment system and treatment method

Abstract

The invention is applicable to the technical field of sewage treatment, and provides an anodic oxidation production wastewater treatment system and method. A middle-end dosing part is arranged at the input end of the settling tank; a front-end dosing part is arranged at the input end of the middle-end dosing part; the front-end dosing part comprises a PH adjusting cylinder; a spiral dosing pipe and a first spiral cold water pipe which are attached to each other are rotationally arranged in the PH adjusting cylinder; the middle-end dosing part comprises a spiral conveying pipe; the middle part and the top part of the spiral conveying pipe are obliquely and upwards communicated with a dosing branch pipe; a second spiral cold water pipe and a third spiral cold water pipe are fixed to the inner circumferential side face and the outer circumferential side face of the spiral conveying pipe correspondingly. According to the device, a neutralizer solution and a coagulant solution are sequentially added into the PH adjusting cylinder and the spiral conveying pipe respectively, so that wastewater is subjected to a neutralization reaction and then is subjected to a coagulation reaction, the coagulation reaction is prevented from being influenced by heat generated by the neutralization reaction, and the treatment effect on the anodic oxidation production wastewater is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and more particularly to an anodic oxidation production wastewater treatment system and method. Background Art

[0002] The process of forming an oxide film on aluminum products (anodes) by applying an external current to aluminum and its alloys in the corresponding electrolyte and specific process conditions is called anodic oxidation. Anodic oxidation will produce wastewater containing high concentrations of aluminum ions, fluoride ions, phosphate ions, surfactants and various organic dyes.

[0003] A search revealed an anodizing wastewater treatment system with publication number CN118812086B, which includes a settling tank equipped with a pressurizing assembly and rollers. The system also features a chemical addition hopper, mesh plates, and aeration pipes. Rapid sedimentation is achieved through the multi-stage mesh plates, followed by a mounting frame that moves along the bottom wall of the tank, coupled with reversible side panels and rolling plates. This system scrapes off settled sludge, which is then pressed and rolled by rollers to reduce its water content, thereby reducing the water content of the discharged wastewater and facilitating sludge treatment.

[0004] However, the above-mentioned anodizing production wastewater treatment system adds neutralizers and coagulants to the sewage entering the sedimentation tank through a chemical addition hopper to adjust the pH value of the sewage to be stable, and precipitates harmful ions in the sewage through the coagulant. Since the neutralizer is usually an alkaline substance (such as NaOH, Ca(OH)2, Na2CO3, etc.), its dissolution or dilution may be accompanied by a significant thermal effect, and high temperature may accelerate the degradation of certain coagulants (such as PAM). Excessively high local temperature may cause the coagulant (such as iron salt) to hydrolyze too quickly, affecting the flocculation effect. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an anodizing production wastewater treatment system and treatment method. By adding a neutralizer solution and a coagulant solution into the pH regulating cylinder and the spiral conveying pipe respectively, the anodizing production wastewater is first subjected to a neutralization reaction and then a coagulation reaction, thereby avoiding the heat generated by the neutralization reaction affecting the coagulation reaction and improving the treatment effect of the anodizing production wastewater.

[0006] To achieve the above object, the present invention provides the following technical solutions: A system for treating wastewater from anodizing production comprises a sedimentation tank; a middle-end dosing section is provided at the input end of the sedimentation tank; a front-end dosing section is provided at the input end of the middle-end dosing section; the front-end dosing section comprises a pH regulating cylinder; a spiral dosing tube and a first spiral cold water tube are provided for rotation inside the pH regulating cylinder to fit in with each other; a drainage tube is provided on the circumferential sides of the spiral dosing tube and the first spiral cold water tube; a one-way valve is provided on the drainage tube; the middle-end dosing section comprises a spiral conveying tube; the tail end and the top end of the spiral conveying tube are fixedly connected to the output end and the input end of the pH regulating cylinder respectively; a dosing branch is provided at the middle and top positions of the spiral conveying tube, which is inclined upward and connected thereto; a second spiral cold water tube and a third spiral cold water tube that match them are fixed on the inner and outer circumferential sides respectively.

[0007] The present invention is further configured as follows: the front end dosing part also includes a support plate; a first fixing ring is fixed to the end of the support plate; the first fixing ring is fixedly installed on the outer peripheral side of the pH regulating cylinder by fastening bolts; the outer peripheral side of the pH regulating cylinder is connected to an anodizing wastewater delivery pipe near its input end.

[0008] The present invention is further configured as follows: a sealing cover is fixedly installed at the input end of the pH adjustment cylinder by fastening bolts; an annular sealing plate is provided on the inner wall of the sealing cover for sealing rotation; an arc-shaped scraper is fixed on the side of the annular sealing plate and is rotatably matched with the inner wall of the pH adjustment cylinder; a rotating ring is fixed on the arc-shaped scraper; and ear plates are fixed between the rotating ring and the spiral dosing pipe and the first spiral cold water pipe.

[0009] The present invention is further configured as follows: a first outer tube is provided on the side of the sealing cover for sealing and rotation; the annular sealing plate is fixedly mounted on the outer peripheral side of the first outer tube; the inward end of the first outer tube is sealed, and a connecting tube is provided on the peripheral side thereof; a second outer tube is provided on the outward end of the first outer tube for sealing and rotation; one end of the second outer tube is sealed, and a first inner tube is fixedly provided on its end; a second inner tube is provided on the end of the first inner tube for sealing and rotation; the second inner tube passes through one end of the first outer tube; baffles are fixed on the ends of the spiral dosing tube and the first spiral cold water tube away from the sealing cover, and the ends of the two close to the sealing cover are respectively connected to the connecting tube and the second inner tube through hoses.

[0010] The present invention is further configured as follows: a second fixing ring is fixed to the outer peripheral side of the second outer tube; a T-shaped seat is fixed to the outer peripheral side of the second fixing ring; the T-shaped seat is fixedly mounted on the surface of the support plate by fastening bolts; an ear tube is provided on the outer peripheral side of the second outer tube; the ear tube and the end of the first inner tube are respectively connected to the external neutralizer solution delivery pipe and the cold water pipe; the dosing branch pipe is connected to the external coagulant solution delivery pipe; a gear ring is fixed to the outer peripheral side of the first outer tube; a servo motor is fixedly mounted on the side of the sealing cover; and a driving gear meshing with the gear ring is fixed to the output end of the servo motor.

[0011] The present invention is further configured as follows: the output end of the pH regulating cylinder is connected to a discharge pipe; the discharge pipe is fixedly connected to the tail end of the spiral conveying pipe through a connecting flange; a liquid inlet pipe is penetrated and connected to the side of the sedimentation box near its top; the liquid inlet pipe is fixedly connected to the head end of the spiral conveying pipe through a connecting flange; a mud extraction pipe is connected to the side of the sedimentation box near its bottom; a liquid extraction pipe is connected to the side of the sedimentation box at its middle; the head ends of the second spiral cold water pipe and the third spiral cold water pipe are both connected to the water inlet pipe, and the tail ends are both connected to the drain pipe; the second spiral cold water pipe and the third spiral cold water pipe are both sealed at both ends.

[0012] The present invention is further configured as follows: a controller is fixedly installed on the side of the sedimentation box; the output end of the controller is electrically connected to the servo motor; a Z-shaped plate is fixed on the side of the second fixed ring; an extension plate is fixed on the side of the sealing cover; a coaxial support ring is fixed at the ends of the Z-shaped plate and the extension plate; a driven gear that meshes with the gear ring is rotatably provided between the two support rings; an annular groove that rotatably cooperates with the support ring is opened on the two opposite sides of the driven gear; a first I-shaped winding roller is fixed on one side of the driven gear; a second I-shaped winding roller is fixed on the side of the baffle; a Z-shaped guide rope tube is fixed inside the drainage pipe; an L-shaped guide rope tube is fixed through the side of the sedimentation box; a first pull rope and a second pull rope are respectively wound on the first I-shaped winding roller and the second I-shaped winding roller; a rubber ball is connected between the ends of the first pull rope and the second pull rope; bristles are evenly provided on the outer peripheral side of the rubber ball; the outer diameter of the rubber ball is smaller than the inner diameter of the spiral conveying pipe.

[0013] The present invention is further configured as follows: a plurality of exhaust pipes are provided on the outer peripheral side of the PH regulating cylinder in a linear array; a piston cylinder is provided on the top of the exhaust pipe; an exhaust pipe is provided on the outer peripheral side of the piston cylinder near its bottom; a one-way valve is provided on both the exhaust pipe and the exhaust pipe; a piston plate is provided for sliding inside the piston cylinder; a connecting rod is fixed on the top of the piston plate; a ball head is fixed on the top of the connecting rod; a vertical plate is fixed on the outer peripheral side of the PH regulating cylinder; a sleeve is fixed on the side of the vertical plate; a rotating rod that rotates with the sleeve is fixed on the side of the first I-shaped winding roller; a plurality of cams that are compatible with the corresponding ball heads are evenly fixed on the outer peripheral side of the rotating rod; a reset spring is fixed between the piston plate and the inner bottom surface of the piston cylinder.

[0014] The advantages of the present invention are: 1. The present invention adds the neutralizer solution and the coagulant solution into the pH regulating cylinder and the spiral conveying pipe respectively, so that the anodizing production wastewater undergoes a neutralization reaction first and then a coagulation reaction, thereby avoiding the heat generated by the neutralization reaction from affecting the coagulation reaction and improving the treatment effect of the anodizing production wastewater.

[0015] 2. The present invention improves the mixing reaction effect of the neutralizer solution and wastewater inside the pH regulating cylinder through the rotating spiral dosing tube and the first spiral cold water pipe. The cold water discharged from the first spiral cold water pipe cools down the heat generated by the reaction inside the pH regulating cylinder, thereby preventing the solution temperature after the neutralization reaction from being too high and affecting the subsequent coagulation reaction; at the same time, the spiral conveying pipe is cooled by the second spiral cold water pipe and the third spiral cold water pipe, thereby further reducing the temperature of the solution inside the spiral conveying pipe and improving the coagulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of an anodizing production wastewater treatment system of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the sedimentation box of the present invention.

[0018] Figure 3 For the present invention Figure 2 A magnified view of area A.

[0019] Figure 4 This is a schematic structural diagram of the sedimentation box of the present invention from another angle.

[0020] Figure 5 It is a structural schematic diagram of the front end dosing part of the present invention.

[0021] Figure 6 For the present invention Figure 5 Magnified view of area B.

[0022] Figure 7This is a structural schematic diagram of the front end dosing part of the present invention from another angle.

[0023] Figure 8 This is a structural schematic diagram of the front end dosing part of the present invention from a front view perspective.

[0024] Figure 9 For the present invention Figure 8 Magnified view of area C.

[0025] Figure 10 It is a structural schematic diagram of the middle end medicine adding part of the present invention.

[0026] Figure 11 It is a structural schematic diagram of the middle end medicine adding part of the present invention from a front view perspective.

[0027] In the figure: 1. Sedimentation tank; 2. Middle-end dosing unit; 3. Front-end dosing unit; 4. pH adjustment cylinder; 5. Spiral dosing tube; 6. Drain pipe; 7. Spiral delivery pipe; 8. Dosing branch pipe; 9. Second spiral cold water pipe; 10. Third spiral cold water pipe; 11. Support plate; 12. First fixing ring; 13. Anodic oxidation wastewater delivery pipe; 14. pH adjustment cylinder; 15. Annular sealing plate; 16. Arc scraper; 17. Rotating ring; 18. Ear plate; 19. First outer tube; 20. Second outer tube; 21. First inner tube; 22. Second inner tube; 23. Baffle; 24. Second fixing ring; 25. T-shaped seat; 26. Ear tube; 27. Gear ring; 28. Servo motor; 29. ​​Drive gear 30. Liquid inlet pipe; 31. Mud extraction pipe; 32. Liquid extraction pipe; 33. Water inlet pipe; 34. Drain pipe; 35. Controller; 36. Z-shaped plate; 37. Extension plate; 38. Support ring; 39. Driven gear; 40. First I-shaped winding roller; 41. Second I-shaped winding roller; 42. Z-shaped guide rope tube; 43. L-shaped guide rope tube; 44. First pull rope; 45. Second pull rope; 46. Rubber ball; 47. Bristles; 48. Exhaust pipe; 49. Piston cylinder; 50. Exhaust pipe; 51. Piston plate; 52. Connecting rod; 53. Ball head; 54. Vertical plate; 55. Sleeve; 56. Rotating rod; 57. Cam; 58. First spiral cold water pipe; 59. Discharge pipe; 60. Connecting pipe. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0030] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0031] For example 1, please refer to Figure 1-11 , the present invention provides the following technical solutions: A system for treating wastewater from anodizing production, specifically, comprises a sedimentation tank 1; a middle-end dosing section 2 is provided at the input end of the sedimentation tank 1; a front-end dosing section 3 is provided at the input end of the middle-end dosing section 2; the front-end dosing section 3 comprises a pH regulating cylinder 4; a spiral dosing tube 5 and a first spiral cold water tube 58 are provided inside the pH regulating cylinder 4, which are rotated and fitted with each other; a drainage tube 6 is provided on the circumferential sides of the spiral dosing tube 5 and the first spiral cold water tube 58; a one-way valve is provided on the drainage tube 6; the middle-end dosing section 2 comprises a spiral conveying tube 7; the tail end and the top end of the spiral conveying tube 7 are fixedly connected to the output end and the input end of the pH regulating cylinder 4, respectively; a dosing branch pipe 8 is provided at the middle and top positions of the spiral conveying tube 7, which is inclined upward; a second spiral cold water tube 9 and a third spiral cold water tube 10 adapted thereto are fixed on the inner and outer circumferential sides of the spiral conveying tube 7, respectively.

[0032] A one-way valve is provided on the corresponding drain pipe 6 so that the neutralizer solution in the spiral dosing pipe 5 and the cold water inside the first spiral cold water pipe 58 can only be discharged into the pH regulating cylinder 4 through the corresponding drain pipe 6, while the solution inside the pH regulating cylinder 4 cannot enter the spiral dosing pipe 5 and the first spiral cold water pipe 58.

[0033] Working principle of this embodiment 1: By adding the neutralizer solution and the coagulant solution into the pH regulating cylinder 4 and the spiral conveying tube 7 respectively, the anodizing production wastewater undergoes a neutralization reaction first and then a coagulation reaction, thereby avoiding the heat generated by the neutralization reaction affecting the coagulation reaction and improving the treatment effect of the anodizing production wastewater.

[0034] The mixing reaction effect of the neutralizer solution and wastewater inside the pH regulating cylinder 4 is improved by the rotating spiral dosing tube 5 and the first spiral cold water pipe 58. The cold water discharged from the first spiral cold water pipe 58 cools down the heat generated by the reaction inside the pH regulating cylinder 4, thereby preventing the solution temperature after the neutralization reaction from being too high and affecting the subsequent coagulation reaction. At the same time, the spiral conveying tube 7 is cooled by the second spiral cold water pipe 9 and the third spiral cold water pipe 10, thereby further reducing the temperature of the solution inside the spiral conveying tube 7 and improving the coagulation effect.

[0035] For example 2, please refer to Figure 1-11 The second embodiment makes the following improvements on the basis of the first embodiment. Specifically, the front end dosing part 3 also includes a support plate 11; a first fixing ring 12 is fixed to the end of the support plate 11; the first fixing ring 12 is fixedly mounted on the outer peripheral side of the pH regulating cylinder 4 by fastening bolts; an anodizing wastewater delivery pipe 13 is provided on the outer peripheral side of the pH regulating cylinder 4 near its input end.

[0036] A sealing cover 14 is fixedly installed at the input end of the pH regulating cylinder 4 by fastening bolts; an annular sealing plate 15 is provided on the inner wall of the sealing cover 14 for sealing rotation; an arc-shaped scraper 16 is fixed on the side of the annular sealing plate 15 and is rotated with the inner wall of the pH regulating cylinder 4; a swivel 17 is fixed on the arc-shaped scraper 16; an ear plate 18 is fixed between the swivel 17 and the spiral dosing tube 5 and the first spiral cold water tube 58.

[0037] A first outer tube 19 is provided on the side of the sealing cover 14 for sealing and rotation; the annular sealing plate 15 is fixedly mounted on the outer peripheral side of the first outer tube 19; the inward end of the first outer tube 19 is sealed, and a connecting tube 60 is provided on the peripheral side thereof; a second outer tube 20 is provided on the outward end of the first outer tube 19 for sealing and rotation; one end of the second outer tube 20 is sealed, and a first inner tube 21 is fixedly provided on its end; a second inner tube 22 is provided on the end of the first inner tube 21 for sealing and rotation; the second inner tube 22 passes through one end of the first outer tube 19; a baffle 23 is fixed on the ends of the spiral dosing tube 5 and the first spiral cold water tube 58 away from the sealing cover 14, and the ends of the two close to the sealing cover 14 are respectively connected to the connecting tube 60 and the second inner tube 22 through hoses.

[0038] A plurality of connecting rods are evenly fixed between the first outer tube 19 and the second inner tube 22 , so that the second inner tube 22 can rotate synchronously with the first outer tube 19 .

[0039] Rotary sealing technology is a technology that prevents liquid or gas from leaking along the axial direction by placing sealing materials on two surfaces perpendicular to the axial direction. At the same time, this sealing technology can also reduce friction and lower energy consumption. The main principle is to use the small annular gap formed between the sealing material and the mating surfaces of the shaft and sleeve to prevent liquid or gas from leaking out of the gap. This is an existing technology and will not be elaborated again.

[0040] A second fixing ring 24 is fixed to the outer peripheral side of the second outer tube 20; a T-shaped seat 25 is fixed to the outer peripheral side of the second fixing ring 24; the T-shaped seat 25 is fixed to the surface of the support plate 11 by fastening bolts; an ear tube 26 is provided on the outer peripheral side of the second outer tube 20; the end portions of the ear tube 26 and the first inner tube 21 are respectively connected to the external neutralizer solution delivery pipe and the cold water pipe; the dosing branch pipe 8 is connected to the external coagulant solution delivery pipe; a gear ring 27 is fixed to the outer peripheral side of the first outer tube 19; a servo motor 28 is fixed to the side of the sealing cover 14; a driving gear 29 meshing with the gear ring 27 is fixed to the output end of the servo motor 28.

[0041] By setting the sealing cover 14 onto the end of the pH regulating cylinder 4, the annular sealing plate 15 plays a sealing role, and the sealing cover 14 is fixedly installed on the end of the pH regulating cylinder 4 by fastening bolts, and then the T-shaped seat 25 is fixedly installed on the surface of the support plate 11 by fastening bolts. At this time, the two sets of support rings 38 are rotatably set in the annular grooves on the two opposite sides of the driven gear 39, and the ring gear 27 is engaged with the driving gear 29 and the driven gear 39 respectively.

[0042] The output end of the pH regulating cylinder 4 is connected to a discharge pipe 59; the discharge pipe 59 is fixedly connected to the tail end of the spiral conveying pipe 7 through a connecting flange; a liquid inlet pipe 30 is provided on the side of the sedimentation tank 1 near its top; the liquid inlet pipe 30 is fixedly connected to the head end of the spiral conveying pipe 7 through a connecting flange; a mud extraction pipe 31 is provided on the side of the sedimentation tank 1 near its bottom; a liquid extraction pipe 32 is provided on the side of the sedimentation tank 1 at its middle; the head ends of the second spiral cold water pipe 9 and the third spiral cold water pipe 10 are both connected to the water inlet pipe 33, and the tail ends are both connected to the drain pipe 34; the second spiral cold water pipe 9 and the third spiral cold water pipe 10 are both sealed at both ends.

[0043] The mud extraction pipe 31 , the water inlet pipe 33 , the drainage pipe 34 and the anodizing wastewater delivery pipe 13 are all equipped with electromagnetic valves electrically connected to the output end of the controller 35 .

[0044] Working principle of the second embodiment: Anodizing wastewater is introduced into the pH regulating cylinder 4 through the anodizing wastewater delivery pipe 13, and at the same time, a neutralizer solution is introduced into the spiral dosing tube 5 through the ear tube 26, and cold water is introduced into the first spiral cold water pipe 58 through the first inner tube 21. The neutralizer solution flows into the pH regulating cylinder 4 through the corresponding drain pipe 6 to react with the anodizing wastewater to achieve pH regulation of the anodizing wastewater. The cold water cools the neutralization reaction and improves the effect of the subsequent coagulation reaction.

[0045] The servo motor 28 is controlled to start and drive the driving gear 29 to rotate slowly, thereby driving the first outer tube 19 and the second inner tube 22 to rotate slowly synchronously, and then driving the spiral dosing tube 5 and the first spiral cold water tube 58 to rotate slowly synchronously, thereby improving the mixing efficiency of the neutralizer solution, cold water and anodizing wastewater; in this process, the arc scraper 16 rotates synchronously with the annular sealing plate 15, and rotates and scrapes the inner wall of the pH regulating cylinder 4, and the sludge adhering to the inner wall of the pH regulating cylinder 4 is scraped off 1 and discharged from the pH regulating cylinder 4 with the water flow.

[0046] After pH adjustment, the anodized wastewater is discharged to the spiral conveying pipe 7 through the discharge pipe 59, and the coagulant solution is added to the upper part of the spiral conveying pipe 7 through each group of dosing branches 8 to perform a pre-coagulation reaction with the wastewater transported inside the spiral conveying pipe 7. The transportation of the spiral conveying pipe 7 prolongs the time for the pre-reaction of the wastewater and the coagulant, thereby improving the subsequent wastewater precipitation efficiency and effect; in this process, by introducing cold water into the second spiral cold water pipe 9 and the third spiral cold water pipe 10, the cooling effect of the wastewater in the spiral conveying pipe 7 is improved, and the effect of the pre-coagulation reaction is further improved, thereby avoiding the high temperature of the wastewater, which affects the effect of the pre-coagulation and subsequent coagulation.

[0047] For example three, please refer to Figure 1-11 The third embodiment is improved on the basis of the second embodiment as follows: specifically, a controller 35 is fixedly mounted on the side of the sedimentation tank 1; the output end of the controller 35 is electrically connected to the servo motor 28; a Z-shaped plate 36 is fixed to the side of the second fixing ring 24; an extension plate 37 is fixed to the side of the sealing cover 14; coaxial support rings 38 are fixed to the ends of the Z-shaped plate 36 and the extension plate 37; a driven gear 39 is rotatably provided between the two support rings 38 and meshes with the gear ring 27; an annular groove is provided on both opposite sides of the driven gear 39 to rotate with the support ring 38 A first I-shaped winding roller 40 is fixed to one side of the driven gear 39; a second I-shaped winding roller 41 is fixed to the side of the baffle 23; a Z-shaped guide rope tube 42 is fixed inside the discharge pipe 6; an L-shaped guide rope tube 43 is fixed through the side of the sedimentation tank 1; a first pull rope 44 and a second pull rope 45 are respectively wound around the first I-shaped winding roller 40 and the second I-shaped winding roller 41; a rubber ball 46 is connected between the ends of the first pull rope 44 and the second pull rope 45; bristles 47 are evenly arranged on the outer peripheral side of the rubber ball 46; the outer diameter of the rubber ball 46 is smaller than the inner diameter of the spiral conveying tube 7.

[0048] The outer diameter of the rubber ball 46 is smaller than the inner diameter of the spiral conveying pipe 7 , which means that the rubber ball 46 can slide freely in the spiral conveying pipe 7 without affecting the normal conveyance of wastewater.

[0049] Working principle of the third embodiment: During the slow clockwise rotation of the first outer tube 19, the second I-shaped winding roller 41 at the end of the spiral dosing tube 5 is driven to rotate slowly clockwise to achieve the winding of the second pull rope 45, and at the same time drive the driven gear 39 to rotate slowly counterclockwise, thereby driving the first I-shaped winding roller 40 to release the first pull rope 44 counterclockwise, so that the rubber ball 46 interacts along the spiral conveying tube 7 from the top to the bottom, and the bristles 47 clean the sludge adhered to the inner wall of the spiral conveying tube 7, and the cleaned sludge is discharged with the flowing wastewater; during the slow counterclockwise rotation of the first outer tube 19, the second pull rope 45 is released, and in this process, the first I-shaped winding roller 40 is driven to rotate slowly clockwise to complete the winding of the first pull rope 44; in summary, the servo motor 28 is controlled to rotate slowly forward and reverse periodically, so that the rubber ball 46 slides back and forth periodically along the spiral conveying tube 7 to prevent the spiral conveying tube 7 from being blocked.

[0050] For example 4, please refer to Figure 1-11 The fourth embodiment makes the following improvements on the basis of the third embodiment. Specifically, a plurality of exhaust pipes 48 are provided in a linear array on the outer peripheral side of the pH regulating cylinder 4; a piston cylinder 49 is provided on the top of the exhaust pipe 48; an exhaust pipe 50 is provided on the outer peripheral side of the piston cylinder 49 near its bottom; and a one-way valve is provided on both the exhaust pipe 48 and the exhaust pipe 50.

[0051] By setting a one-way valve on the exhaust pipe 48, the air in the piston cylinder 49 can only enter the interior of the pH regulating cylinder 4 through the exhaust pipe 48; by setting a one-way valve on the exhaust pipe 50, the external air can only be drawn into the piston cylinder 49 through the exhaust pipe 50.

[0052] A piston plate 51 is slidingly provided inside the piston cylinder 49; a connecting rod 52 is fixed to the top of the piston plate 51; a ball head 53 is fixed to the top of the connecting rod 52; vertical plates 54 are fixed to the sides of the PH regulating cylinder 4; a sleeve 55 is fixed to the side of the vertical plate 54; a rotating rod 56 that rotates with the sleeve 55 is fixed to the side of the first I-shaped winding roller 40; a number of cams 57 that are compatible with the corresponding ball heads 53 are evenly fixed on the side of the rotating rod 56; a return spring is fixed between the piston plate 51 and the inner bottom surface of the piston cylinder 49.

[0053] Working principle of the fourth embodiment: The servo motor 28 is controlled to rotate forward and backward slowly and periodically, thereby driving the first I-shaped winding roller 40 and the rotating rod 56 to rotate forward and backward slowly and periodically synchronously. Under the elastic force of the return spring, the piston plate 51 is driven to slide along the inner wall of the piston cylinder 49 and rise until the ball head 53 is pressed against the lowest position of the cam 57. In this process, external air is drawn into the interior of the piston cylinder 49. When the rotating rod 56 drives the cam 57 to rotate, the cam 57 gradually squeezes the ball head 53, driving the piston plate 51 to slide down along the inner wall of the piston cylinder 49, and discharges the air inside the piston cylinder 49 to the interior of the pH regulating cylinder 4 through the exhaust pipe 48, thereby achieving aeration, increasing the dissolved oxygen content inside the pH regulating cylinder 4, and thereby improving the subsequent reaction effect.

[0054] A method for treating anodizing wastewater from an anodizing production system comprises the following steps: T1. Wastewater and neutralizer solution are injected into the pH adjustment cylinder 4 through the anodizing wastewater delivery pipe 13 and the spiral dosing pipe 5 to complete the pH adjustment of the injected wastewater. During this process, cold water is injected through the first spiral cold water pipe 58 to cool down the heat generated during the neutralization reaction.

[0055] T2. The wastewater after cooling and pH adjustment enters the spiral conveying pipe 7, and the coagulant solution is added to the spiral conveying pipe 7 through the dosing branch pipe 8 to realize the delivery of the coagulant solution to the wastewater, complete the pre-coagulation, and extend the fusion path of the wastewater and the coagulant solution. During this process, the cold water flowing in the second spiral cold water pipe 9 and the third spiral cold water pipe 10 further cools the heat inside the spiral conveying pipe 7.

[0056] T3. The wastewater that is first neutralized and then pre-coagulated is discharged into the sedimentation tank 1 for coagulation and sedimentation. The sludge after sedimentation is pumped away through the mud pumping pipe 31, and the supernatant is pumped away through the liquid pumping pipe 32.

[0057] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0058] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0059] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0060] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

[0061] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An anodizing production wastewater treatment system, comprising a sedimentation tank (1); characterized in that: The input end of the precipitation box (1) is provided with a middle-end dosing part (2); the input end of the middle-end dosing part (2) is provided with a front-end dosing part (3); The front end dosing part (3) includes a pH regulating cylinder (4); a spiral dosing tube (5) and a first spiral cold water tube (58) are rotatably provided inside the pH regulating cylinder (4); a drainage tube (6) is evenly connected to the circumferential side surfaces of the spiral dosing tube (5) and the first spiral cold water tube (58); a one-way valve is provided on the drainage tube (6); The middle-end dosing part (2) includes a spiral conveying tube (7); the tail end and the top end of the spiral conveying tube (7) are fixedly connected to the output end and the input end of the pH regulating cylinder (4) respectively; the spiral conveying tube (7) is located at the middle and top positions thereof and is connected to a dosing branch pipe (8) which is inclined upward; the inner and outer peripheral sides of the spiral conveying tube (7) are respectively fixed with a second spiral cold water pipe (9) and a third spiral cold water pipe (10) which are adapted thereto.

2. The anodizing wastewater treatment system according to claim 1, characterized in that: The front-end dosing portion (3) further comprises a support plate (11); a first fixing ring (12) is fixed to the end of the support plate (11); the first fixing ring (12) is fixedly mounted on the outer peripheral side of the pH regulating cylinder (4) by means of fastening bolts; an anodizing wastewater delivery pipe (13) is provided on the outer peripheral side of the pH regulating cylinder (4) near its input end.

3. The anodizing wastewater treatment system according to claim 2, characterized in that: The input end of the pH regulating cylinder (4) is fixedly mounted with a sealing cover (14) by means of fastening bolts; an annular sealing plate (15) is provided on the inner wall of the sealing cover (14) for sealing rotation; an arc-shaped scraper (16) is fixed on the side of the annular sealing plate (15) for rotationally cooperating with the inner wall of the pH regulating cylinder (4); A rotating ring (17) is fixed on the arc-shaped scraper (16); and an ear plate (18) is fixed between the rotating ring (17), the spiral dosing pipe (5), and the first spiral cold water pipe (58).

4. The anodizing wastewater treatment system according to claim 3, characterized in that: The side of the sealing cover (14) is provided with a first outer tube (19) for sealing and rotation; the annular sealing plate (15) is fixedly mounted on the outer peripheral side of the first outer tube (19); the inward end of the first outer tube (19) is sealed, and a connecting tube (60) is provided on the peripheral side thereof; the outward end of the first outer tube (19) is provided with a second outer tube (20) for sealing and rotation; one end of the second outer tube (20) is sealed, and a first inner tube (21) is fixedly passed through the end thereof; a second inner tube (22) is provided for sealing and rotation at the end of the first inner tube (21); the second inner tube (22) passes through one end of the first outer tube (19); a baffle (23) is fixed on the ends of the spiral dosing tube (5) and the first spiral cold water tube (58) away from the sealing cover (14), and the ends of the two close to the sealing cover (14) are respectively connected to the connecting tube (60) and the second inner tube (22) through a hose.

5. The anodizing wastewater treatment system according to claim 4, characterized in that: A second fixing ring (24) is fixed to the outer peripheral side of the second outer tube (20); a T-shaped seat (25) is fixed to the outer peripheral side of the second fixing ring (24); the T-shaped seat (25) is fixed to the surface of the support plate (11) by fastening bolts; an ear tube (26) is provided on the outer peripheral side of the second outer tube (20); the ends of the ear tube (26) and the first inner tube (21) are respectively connected to the external neutralizer solution delivery pipe and the cold water pipe; the dosing branch pipe (8) is connected to the external coagulant solution delivery pipe; A gear ring (27) is fixed to the outer peripheral side of the first outer tube (19); a servo motor (28) is fixedly mounted on the side of the sealing cover (14); and a driving gear (29) meshing with the gear ring (27) is fixed to the output end of the servo motor (28).

6. The anodizing wastewater treatment system according to claim 5, characterized in that: The output end of the pH regulating cylinder (4) is connected to a discharge pipe (59); the discharge pipe (59) is fixedly connected to the tail end of the spiral conveying pipe (7) via a connecting flange; a liquid inlet pipe (30) is provided through the side of the sedimentation tank (1) near the top thereof; the liquid inlet pipe (30) is fixedly connected to the head end of the spiral conveying pipe (7) via a connecting flange; A mud extraction pipe (31) is provided on the side of the sedimentation box (1) near its bottom; a liquid extraction pipe (32) is provided on the side of the sedimentation box (1) at its middle; the first ends of the second spiral cold water pipe (9) and the third spiral cold water pipe (10) are both provided with a water inlet pipe (33), and the tail ends are both provided with a drain pipe (34); both the first and tail ends of the second spiral cold water pipe (9) and the third spiral cold water pipe (10) are sealed.

7. The anodizing wastewater treatment system according to claim 6, characterized in that: A controller (35) is fixedly mounted on the side of the sedimentation box (1); an output end of the controller (35) is electrically connected to the servo motor (28); a Z-shaped plate (36) is fixed to the side of the second fixing ring (24); an extension plate (37) is fixed to the side of the sealing cover (14); coaxial support rings (38) are fixed to the ends of the Z-shaped plate (36) and the extension plate (37); a driven gear (39) is rotatably provided between the two support rings (38) and meshes with the gear ring (27); an annular groove is provided on two opposite side surfaces of the driven gear (39) and rotatably cooperates with the support ring (38); A first I-shaped winding roller (40) is fixed to one side of the driven gear (39); a second I-shaped winding roller (41) is fixed to the side of the baffle (23); a Z-shaped guide rope tube (42) is fixed inside the drainage pipe (6); an L-shaped guide rope tube (43) is fixed through the side of the sedimentation tank (1); a first pull rope (44) and a second pull rope (45) are respectively wound around the first I-shaped winding roller (40) and the second I-shaped winding roller (41); a rubber ball (46) is connected between the ends of the first pull rope (44) and the second pull rope (45); bristles (47) are evenly arranged on the outer peripheral side of the rubber ball (46); the outer diameter of the rubber ball (46) is smaller than the inner diameter of the spiral conveying pipe (7).

8. The anodizing wastewater treatment system according to claim 7, characterized in that: The outer peripheral side of the pH regulating cylinder (4) is provided with a plurality of exhaust pipes (48) in a linear array; the top of the exhaust pipe (48) is provided with a piston cylinder (49); the outer peripheral side of the piston cylinder (49) is provided with an exhaust pipe (50) near its bottom; both the exhaust pipe (48) and the exhaust pipe (50) are provided with a one-way valve; A piston plate (51) is slidably provided inside the piston cylinder (49); a connecting rod (52) is fixed on the top of the piston plate (51); a ball head (53) is fixed on the top of the connecting rod (52); a vertical plate (54) is fixed on the side surface of the PH regulating cylinder (4); a sleeve (55) is fixed on the side surface of the vertical plate (54); a rotating rod (56) that rotates with the sleeve (55) is fixed on the side surface of the first I-shaped winding roller (40); a plurality of cams (57) that are compatible with the corresponding ball heads (53) are evenly fixed on the side surface of the rotating rod (56); a return spring is fixed between the piston plate (51) and the inner bottom surface of the piston cylinder (49).

9. The method for treating anodizing wastewater according to claim 8, characterized in that: The following steps are involved: T1, injecting wastewater and neutralizer solution into the pH regulating cylinder (4) through the anodic oxidation wastewater delivery pipe (13) and the spiral dosing pipe (5) to complete the pH adjustment of the injected wastewater. During this process, cold water is injected through the first spiral cold water pipe (58) to cool the heat generated during the neutralization reaction; T2, the wastewater after cooling and pH adjustment enters the spiral conveying pipe (7), and the coagulant solution is added to the spiral conveying pipe (7) through the dosing branch pipe (8) to achieve the delivery of the wastewater coagulant solution, complete the pre-coagulation, and extend the fusion path of the wastewater and the coagulant solution. During this process, the cold water flowing in the second spiral cold water pipe (9) and the third spiral cold water pipe (10) further cools the heat inside the spiral conveying pipe (7); T3. The wastewater that is first neutralized and then pre-coagulated is discharged into the sedimentation tank (1) for coagulation and sedimentation. The sludge after sedimentation is pumped away through the sludge pumping pipe (31), and the supernatant is pumped away through the liquid pumping pipe (32).

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