Electrocatalytic oxidation device for heavy metal treatment of electroplating wastewater

Abstract

The utility model relates to the field of electroplating wastewater treatment, in particular to an electroplating wastewater heavy metal treatment electrocatalytic oxidation device which comprises an electrolytic bath body, an electrode plate body is arranged on the inner side of the electrolytic bath body, an electrode connecting wire is fixedly connected to the upper side of the electrode plate body, and a frame plate is fixedly connected to the upper side of the electrolytic bath body. A turbulence mechanism is arranged on the inner side of the electrolytic bath body, stirring of heavy metal sewage can be achieved through rotation of a stainless steel stirring plate in the device, meanwhile, an air pump can add oxygen into the electrolytic bath body through an air inlet pipe, and the oxygen is added through rotation stirring of the stainless steel stirring plate and the air inlet pipe; the gas-liquid mixing and turbulence effects can be caused, the fluidity of the wastewater can be improved, the wastewater can be more uniformly distributed on the inner side of the electrolytic bath body, the enhanced mixing effect can effectively reduce the concentration polarization phenomenon, and the oxidation reaction efficiency of the heavy metal sewage is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electroplating wastewater treatment, and particularly relates to an electrocatalytic oxidation device for treating heavy metals in electroplating wastewater. Background Art

[0002] The treatment of heavy metals in electroplating wastewater can be achieved through electrocatalytic oxidation technology. Electrocatalytic oxidation is an effective wastewater treatment technology that can oxidize and degrade organic substances, and at the same time, it can also convert heavy metal ions into low-toxicity substances or precipitates, thereby achieving the removal of heavy metals.

[0003] After retrieval, in the prior art, the Chinese patent publication number: CN209226652U, authorization date: August 9, 2019, discloses an electrocatalytic oxidation sewage treatment device. The electrocatalytic oxidation sewage treatment device of the utility model can be used for treating oily wastewater, high-concentration organic wastewater, heavy-metal-containing wastewater, etc. It has high automation, convenient operation and management, good wastewater treatment effect, small floor area, extremely small sludge production, low operation cost, and high economic benefits.

[0004] However, this device still has the following defects: Although through the operation of the power supply, the electrode connecting wire can be connected to the composite electrode plate, and through the connection between the electrode connecting wire and the power supply, the composite electrode plate can smoothly perform electrocatalytic oxidation treatment on heavy-metal sewage. However, after long-term use of the composite electrode plate, some precipitates after electrocatalytic oxidation of heavy-metal sewage may adhere or attach to the outside of the composite electrode plate, thereby affecting the subsequent use of the composite electrode plate. And because it is also more troublesome to clean the composite electrode plate, if a large amount of precipitates adhere or attach to the surface of the composite electrode plate, it is easy to reduce the use effect of the composite electrode plate. Summary of the Utility Model

[0005] In view of the above problems, the utility model provides an electrocatalytic oxidation device for treating heavy metals in electroplating wastewater, including an electrolytic cell body. An electrode plate body is arranged inside the electrolytic cell body. An electrode connecting wire is fixedly connected to the upper side of the electrode plate body. A frame plate is fixedly connected to the upper side of the electrolytic cell body. A turbulence mechanism is arranged inside the electrolytic cell body.

[0006] The turbulence mechanism includes a servo motor fixedly connected to the upper side of the frame plate. The output shaft of the servo motor penetrates the frame plate. A rotating rod is arranged on the lower side of the output end of the servo motor. A stainless-steel stirring plate is fixedly connected to the outside of the rotating rod, and the stainless-steel stirring plate is arranged inside the electrolytic cell body. An air extraction pump is fixedly connected to the upper side of the electrolytic cell body. An air inlet pipe is arranged inside the air extraction pump, and one end of the air inlet pipe is arranged inside the electrolytic cell body. A lifting mechanism is arranged between the servo motor and the rotating rod.

[0007] Furthermore, the lifting mechanism includes a movable plate fixedly connected to the upper end of the rotating rod, the output end of the servo motor is connected to the fixed plate through a coupling transmission, the lower side of the fixed plate is rotatably connected to a screw, and the movable plate is threadedly connected to the outside of the screw.

[0008] Furthermore, a water outlet pipe is fixedly connected to the inside of the electrolytic cell body, one end of the water outlet pipe passes through the electrolytic cell body, a water pump is arranged on the outside of the water outlet pipe, and one end of the water outlet pipe away from the electrolytic cell body is fixedly connected to a filter box, and an activated carbon plate is arranged on the inside of the filter box.

[0009] Furthermore, a fixed ring block is fixedly connected to the outer side of the rotating rod, and the fixed ring block is fixedly connected to the lower side of the moving plate.

[0010] Furthermore, a Teflon sleeve is provided on the outer side of the rotating rod, and the Teflon sleeve is provided between the stainless steel stirring plate and the movable plate, and the Teflon sleeve is used to protect the rotating rod.

[0011] Furthermore, a filter block is arranged inside the electrolytic cell body, the filter block is arranged at one end of the water outlet pipe away from the filter box, and the filter block is arranged outside the water outlet pipe.

[0012] Furthermore, a reinforcement plate is fixedly connected to one side of the electrolytic cell body, and the reinforcement plate is fixedly connected to the outside of the water outlet pipe.

[0013] Furthermore, a limiting plate is arranged on the inner side of the filter box, the activated carbon plate is arranged on one side of the limiting plate, and the outer side of the activated carbon plate is slidably connected to the limiting plate.

[0014] The beneficial effects of the utility model are:

[0015] 1. The rotation of the stainless steel stirring plate in this device can achieve the stirring of heavy metal wastewater. At the same time, the vacuum pump can add oxygen to the inside of the electrolytic cell body through the air inlet pipe. The rotation and stirring of the stainless steel stirring plate and the addition of oxygen through the air inlet pipe can cause gas-liquid mixing and turbulence effects, which help to improve the fluidity of the wastewater and make it more evenly distributed on the inside of the electrolytic cell body. This enhanced mixing effect can effectively reduce the concentration polarization phenomenon and improve the efficiency of the oxidation reaction of heavy metal wastewater.

[0016] 2. When the screw in this device rotates, the threaded connection between the movable plate and the screw can drive the movable plate to move up and down. When the movable plate moves up and down, it can drive the stainless steel stirring plate to move up and down together. When the impurities inside the heavy metal wastewater are precipitated, the stainless steel stirring plate can move up through the rotation of the screw, thereby reducing the situation where a large amount of impurities are attached to the outside of the stainless steel stirring plate.

[0017] Other features and advantages of the present utility model will be described in the subsequent description, and in part will be obvious from the description, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained by the structures pointed out in the description, claims and drawings. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Shows the structural main view according to an embodiment of the present utility model;

[0020] Figure 2 Shows the structural side view according to an embodiment of the present utility model;

[0021] Figure 3 Shows the structural sectional view according to an embodiment of the present utility model;

[0022] Figure 4 Shows the structural schematic diagram of the Teflon sleeve and the fixed ring block according to an embodiment of the present utility model;

[0023] Figure 5 Shows the structural schematic diagram of the activated carbon plate and the limiting plate according to an embodiment of the present utility model.

[0024] In the figure: 1, electrolytic cell body; 21, electrode sheet body; 22, electrode connection wire; 3, frame plate; 4, turbulence mechanism; 41, servo motor; 42, rotating rod; 43, stainless steel stirring plate; 44, air extraction pump; 45, intake pipe; 5, lifting mechanism; 51, fixing plate; 52, screw rod; 53, moving plate; 6, fixed ring block; 7, Teflon sleeve; 81, water outlet pipe; 82, water pump; 83, filter box; 84, activated carbon plate; 9, reinforcement plate; 10, filter block; 11, limiting plate. Detailed Description of the Embodiments

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0026] The present invention provides an electrocatalytic oxidation device for treating heavy metals in electroplating wastewater, including an electrolytic cell body 1, exemplarily, as Figure 1 and Figure 2 shown.

[0027] An electrode sheet body 21 is arranged inside the electrolytic cell body 1 , an electrode connecting line 22 is fixedly connected to the upper side of the electrode sheet body 21 , a frame plate 3 is fixedly connected to the upper side of the electrolytic cell body 1 , and a turbulence mechanism 4 is arranged inside the electrolytic cell body 1 .

[0028] The turbulence mechanism 4 includes a servo motor 41 fixedly connected to the upper side of the frame plate 3, the output shaft of the servo motor 41 passes through the frame plate 3, a rotating rod 42 is arranged on the lower side of the output end of the servo motor 41, a stainless steel stirring plate 43 is fixedly connected to the outer side of the rotating rod 42, and the stainless steel stirring plate 43 is arranged on the inner side of the electrolytic cell body 1, an air pump 44 is fixedly connected to the upper side of the electrolytic cell body 1, an air intake pipe 45 is arranged on the inner side of the air pump 44, and one end of the air intake pipe 45 is arranged on the inner side of the electrolytic cell body 1, and a lifting mechanism 5 is arranged between the servo motor 41 and the rotating rod 42.

[0029] The lifting mechanism 5 includes a moving plate 53 fixedly connected to the upper end of the rotating rod 42. The output end of the servo motor 41 is connected to the fixed plate 51 through a coupling transmission. The lower side of the fixed plate 51 is rotatably connected to a screw rod 52. The moving plate 53 is threadedly connected to the outer side of the screw rod 52.

[0030] Specifically, the electrolytic cell body 1 can be connected to the electrode connection line 22 through the electrode sheet body 21, and the electrode connection line 22 is connected to an external power source, and the electrode connection line 22 can electrocatalytically oxidize the heavy metal wastewater. The frame plate 3 can be connected to the servo motor 41. When the screw 52 rotates, the movable plate 53 can be driven to move up and down through the threaded connection between the movable plate 53 and the screw 52;

[0031] In addition, when the servo motor 41 rotates, it can drive the rotating rod 42 and the stainless steel stirring plate 43 to rotate together through the fixed plate 51 and the movable plate 53. The rotation of the stainless steel stirring plate 43 can achieve the stirring of the heavy metal wastewater. At the same time, the air pump 44 can add oxygen to the inside of the electrolytic cell body 1 through the air inlet pipe 45. When the movable plate 53 moves up and down, it can drive the stainless steel stirring plate 43 to move up and down together. When the impurities in the heavy metal wastewater are precipitated, the stainless steel stirring plate 43 can move up through the rotation of the screw 52, ​​thereby reducing the situation where a large amount of impurities are attached to the outside of the stainless steel stirring plate 43.

[0032] In addition, the rotational stirring of the stainless - steel stirring plate 43 and the addition of oxygen through the air inlet pipe 45 can cause gas - liquid mixing and turbulent effects, which helps to improve the fluidity of the wastewater and make it more evenly distributed inside the electrolytic cell body 1. This enhanced mixing effect can effectively reduce the phenomenon of concentration polarization, enabling the heavy - metal ions and organic pollutants in the heavy - metal sewage to come into more effective contact with the electrode plate body 21, improving the efficiency of the oxidation reaction of the heavy - metal sewage. At the same time, the use of oxygen can increase the rate of the electro - catalytic oxidation reaction.

[0033] A water outlet pipe 81 is fixedly connected inside the electrolytic cell body 1, and one end of the water outlet pipe 81 penetrates through the electrolytic cell body 1, as Figure 1 and Figure 2 shown.

[0034] A water pump 82 is arranged outside the water outlet pipe 81. One end of the water outlet pipe 81 away from the electrolytic cell body 1 is fixedly connected to a filter box 83. An activated - carbon plate 84 is arranged inside the filter box 83.

[0035] A fixed - ring block 6 is fixedly connected to the outer side of the rotating rod 42, and the fixed - ring block 6 is fixedly connected to the lower side of the moving plate 53.

[0036] A Teflon sleeve 7 is arranged on the outer side of the rotating rod 42, and the Teflon sleeve 7 is arranged between the stainless - steel stirring plate 43 and the moving plate 53. The Teflon sleeve 7 is used to protect the rotating rod 42.

[0037] Specifically, when the water pump 82 operates, it can pump the treated sewage inside the electrolytic cell body 1 through the water outlet pipe 81 and extract it to the inside of the filter box 83. The activated - carbon plate 84 can further filter the sewage, thereby removing some impurities in the sewage.

[0038] In addition, the fixed - ring block 6 can increase the connection stability between the moving plate 53 and the rotating rod 42, while the Teflon sleeve 7 can play a certain role in shielding the outer side of the rotating rod 42, reducing the corrosion of the rotating rod 42 by the sewage.

[0039] A filter block 10 is arranged inside the electrolytic cell body 1. The filter block 10 is arranged at one end of the water outlet pipe 81 away from the filter box 83, and the filter block 10 is arranged on the outer side of the water outlet pipe 81, as Figure 1 and Figure 2 shown.

[0040] A reinforcing plate 9 is fixedly connected to one side of the electrolytic cell body 1, and the reinforcing plate 9 is fixedly connected to the outer side of the water outlet pipe 81.

[0041] A limiting plate 11 is arranged inside the filtering box 83, the activated carbon plate 84 is arranged on one side of the limiting plate 11, and the outer side of the activated carbon plate 84 is slidably connected with the limiting plate 11.

[0042] Specifically, the reinforcing plate 9 can play a reinforcing role in the use of the water outlet pipe 81 through its connection with the electrolytic cell body 1, and the filter holes of the filter block 10 are larger than those of the filtering box 83. The filter block 10 can filter some larger impurities and particles, thereby reducing the situation that larger particles block the inside of the water pump 82.

[0043] In addition, the limiting plate 11 can support and limit the filtering box 83, increase the stability of the filtering box 83 during use, and reduce the shaking of the filtering box 83 during use.

[0044] Using an electrocatalytic oxidation device for treating heavy metals in electroplating wastewater proposed by an embodiment of the present invention, its working principle is as follows: when the device is in use, the staff can introduce heavy metal sewage into the inside of the electrolytic cell body 1, and then connect the electrode connection wire 22 to an external power supply to achieve electrocatalytic oxidation treatment of the sewage. At the same time, the staff can also start the air inlet pipe 45 and the servo motor 41. When the servo motor 41 operates, it will drive the stainless steel stirring plate 43 to rotate, so that the stainless steel stirring plate 43 stirs the sewage, and injects oxygen into the inside of the electrolytic cell body 1 through the operation of the air inlet pipe 45. By injecting oxygen, a turbulent flow effect occurs in the sewage, thereby achieving the effect of catalytic treatment of the sewage. Then, when precipitating sundries, the stainless steel stirring plate 43 can be lifted by rotating the screw 52 to reduce the situation of impurities adhering to the surface of the stainless steel stirring plate 43. Then, the sewage can be taken out through the water pump 82 and subsequent treatment can be carried out.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrocatalytic oxidation device for treating heavy metals in electroplating wastewater, comprising an electrolytic cell body (1), characterized in that: An electrode sheet body (21) is arranged inside the electrolytic cell body (1), an electrode connecting line (22) is fixedly connected to the upper side of the electrode sheet body (21), a frame plate (3) is fixedly connected to the upper side of the electrolytic cell body (1), and a turbulence mechanism (4) is arranged inside the electrolytic cell body (1); The turbulence mechanism (4) comprises a servo motor (41) fixedly connected to the upper side of the frame plate (3), the output shaft of the servo motor (41) passes through the frame plate (3), a rotating rod (42) is arranged on the lower side of the output end of the servo motor (41), a stainless steel stirring plate (43) is fixedly connected to the outer side of the rotating rod (42), and the stainless steel stirring plate (43) is arranged on the inner side of the electrolytic cell body (1), an air pump (44) is fixedly connected to the upper side of the electrolytic cell body (1), an air intake pipe (45) is arranged on the inner side of the air pump (44), and one end of the air intake pipe (45) is arranged on the inner side of the electrolytic cell body (1), and a lifting mechanism (5) is arranged between the servo motor (41) and the rotating rod (42).

2. The electrocatalytic oxidation device for treating heavy metals in electroplating wastewater according to claim 1, wherein: The lifting mechanism (5) comprises a movable plate (53) fixedly connected to the upper end of the rotating rod (42); the output end of the servo motor (41) is connected to the fixed plate (51) through a coupling transmission; the lower side of the fixed plate (51) is rotatably connected to a screw rod (52); and the movable plate (53) is threadedly connected to the outer side of the screw rod (52).

3. The electrocatalytic oxidation device for treating heavy metals in electroplating wastewater according to claim 2, wherein: A water outlet pipe (81) is fixedly connected to the inside of the electrolytic cell body (1), one end of the water outlet pipe (81) passes through the electrolytic cell body (1), a water pump (82) is arranged on the outside of the water outlet pipe (81), and a filter box (83) is fixedly connected to one end of the water outlet pipe (81) away from the electrolytic cell body (1), and an activated carbon plate (84) is arranged on the inside of the filter box (83).

4. An electrocatalytic oxidation device for treating heavy metals in electroplating wastewater according to claim 3, characterized in that: A fixed ring block (6) is fixedly connected to the outer side of the rotating rod (42), and the fixed ring block (6) is fixedly connected to the lower side of the moving plate (53).

5. An electrocatalytic oxidation device for treating heavy metals in electroplating wastewater according to claim 4, characterized in that: A Teflon sleeve (7) is arranged on the outer side of the rotating rod (42), and the Teflon sleeve (7) is arranged between the stainless steel stirring plate (43) and the moving plate (53), and the Teflon sleeve (7) is used to protect the rotating rod (42).

6. The electrocatalytic oxidation device for treating heavy metals in electroplating wastewater according to claim 3, wherein: A filter block (10) is arranged inside the electrolytic cell body (1), and the filter block (10) is arranged at one end of the water outlet pipe (81) away from the filter box (83), and the filter block (10) is arranged outside the water outlet pipe (81).

7. An electrocatalytic oxidation device for treating heavy metals in electroplating wastewater according to claim 5, characterized in that: A reinforcing plate (9) is fixedly connected to one side of the electrolytic cell body (1), and the reinforcing plate (9) is fixedly connected to the outside of the water outlet pipe (81).

8. An electrocatalytic oxidation device for treating heavy metals in electroplating wastewater according to claim 6, characterized in that: A limiting plate (11) is arranged on the inner side of the filter box (83), the activated carbon plate (84) is arranged on one side of the limiting plate (11), and the outer side of the activated carbon plate (84) is slidably connected to the limiting plate (11).

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