Copper-containing wastewater treatment device for copper foil production

Abstract

The invention provides copper-containing wastewater treatment equipment for copper foil production, and relates to the field of wastewater treatment.The copper-containing wastewater treatment equipment for copper foil production comprises a sedimentation tank, and a rotating column and a first driving device used for driving the rotating column to rotate are arranged at the axis of the sedimentation tank; the lower end surface of the rotating column is rotationally connected with the bottom wall of the sedimentation tank; a plurality of transverse sliding blocks are connected into the transverse sliding groove in a sliding mode. A medicine distribution pipe is vertically inserted into the center of the upper end face of each transverse sliding block, and the medicine distribution pipes are connected through a medicine feeding pipe; a plurality of medicine distribution holes are vertically formed in the peripheral wall of each medicine distribution pipe; a second driving device is arranged on one side of the containing frame and drives the transverse sliding blocks to slide in the transverse sliding grooves in a reciprocating mode. The lower end face of each medicine distribution pipe is fixedly communicated with a suction filtration box, and filter cloth is arranged on the side wall of the opposite side of each suction filtration box. The method has the effect of improving the recovery efficiency of the copper-containing wastewater.

Description

Technical Field

[0001] The invention relates to the field of wastewater treatment, and in particular to a device for treating copper-containing wastewater used in copper foil production. Background Art

[0002] A large amount of copper-containing wastewater is generated during the copper foil production process. The copper ion concentration in these wastewaters is extremely high, and they also contain heavy metal ions such as nickel, zinc, and iron, as well as organic matter. The direct discharge of high-concentration heavy metal ions not only poses a serious threat to the environment and human health, but also causes certain economic losses. Therefore, the treatment of copper foil wastewater and the recovery of copper are crucial in the copper foil production process.

[0003] The existing copper foil wastewater treatment process is as follows: After the wastewater is sent to the pretreatment tank, large impurities and suspended solids in the wastewater are removed. Then, the medicine is added to form floccules. When the floccules are precipitated, the fine particles and organic matter in the wastewater are removed by filtration. After the floccules are separated from the wastewater, the copper in the wastewater is separated from other substances by reverse osmosis to obtain fresh water and concentrated water. The concentrated water is electrolyzed and recovered to obtain metallic copper.

[0004] A copper recycling device for pre-treated copper foil wastewater is disclosed in reference to the Chinese invention patent with the publication number CN 114956286 B. The technology increases the diffusion probability of the copper foil wastewater and the flocculant by giving the copper foil wastewater and the flocculant a certain dispersing force when mixing the copper foil wastewater and the flocculant. During the separation of the copper-containing precipitate and the liquid stratification, the liquid stratification is filtered again to improve the separation effect of the copper-containing precipitate.

[0005] With respect to the above-mentioned related technologies, the inventors found that the technology filters out the floccules in the wastewater through the mesh, and then scrapes off the floccules on the mesh through the reciprocating pusher plate. Since the filtered floccules still contain wastewater containing copper ions, directly discharging the floccules will cause a waste of resources. Summary of the invention

[0006] In view of this, the present invention provides a copper-containing wastewater treatment device for copper foil production, which reduces the content of copper-containing wastewater discharged from the flocculation by making the medicine and flocculation combine more thoroughly when applying the medicine, and improves the recovery efficiency of the copper-containing wastewater by dehydrating the flocculation after precipitation.

[0007] A copper-containing wastewater treatment device for copper foil production includes a sedimentation tank, wherein the axis of the sedimentation tank is provided with a rotating column and a first driving device for driving the rotating column to rotate; the lower end surface of the rotating column is rotatably connected to the bottom wall of the sedimentation tank, and a placing rack is fixedly provided on the upper end surface of the rotating column; a transverse sliding groove is provided through the upper end surface of the placing rack; a plurality of transverse sliding blocks are slidably connected in the transverse sliding groove; a medicine dispensing tube is vertically inserted in the center of the upper end surface of each transverse sliding block, and the medicine dispensing tube is connected through a medicine delivery tube; a plurality of medicine dispensing holes are vertically provided on the peripheral wall of each medicine dispensing tube; a second driving device is provided on one side of the placing rack, and the second driving device drives a plurality of transverse sliding blocks to slide back and forth in the transverse sliding groove; a suction filter box is fixedly connected to the lower end surface of each medicine dispensing tube, and a filter cloth is provided on the side wall of each suction filter box facing the other side. The copper-containing wastewater in the sedimentation tank is extracted by a recovery unit to reduce the content of copper-containing wastewater in flocculation and sediment. The medicine dispensing unit makes the medicine and the copper-containing wastewater combine more thoroughly.

[0008] Furthermore, a column is provided on the bottom wall of the inner cavity of the suction filter box; a transverse sliding column is fixedly provided on the upper end of the column, and both ends of the transverse sliding column are slidably connected with a pressing plate, and the specification of each pressing plate is adapted to the corresponding side filter cloth. The filter pressing mechanism performs filter pressing and dehydration on the flocculation and sediment, so that the flocculation and sediment are dehydrated more thoroughly.

[0009] Furthermore, a piston plate is slidably provided on the inner wall of each drug dispensing tube, and a piston rod is provided on the lower end surface of the piston plate; the pressure plates on both sides are respectively provided with a first inclined block and a second inclined block; a third inclined block adapted to the first inclined block and a fourth inclined block adapted to the second inclined block are provided at the bottom of the piston rod; the piston rod drives the third inclined block to move toward the outside of the filter box through the first inclined block, and the second inclined block drives the fourth inclined block to move toward the inside of the filter box.

[0010] Furthermore, the diameter of the piston rod is smaller than the diameter of the piston plate; a first one-way valve is provided on the piston plate, and the copper-containing wastewater in the filtration box enters the medicine dispensing tube through the first one-way valve under the action of negative pressure.

[0011] Furthermore, each of the medicine dispensing holes is provided with a second one-way valve, which prevents the copper-containing wastewater extracted by the filtration mechanism from flowing back.

[0012] Furthermore, compression springs are provided at both ends of the transverse sliding column, and the compression springs in the initial state always drive the corresponding pressing plate to be in close contact with the inner surface of the filter cloth on the corresponding side.

[0013] Furthermore, a slag collector is fixedly provided on the outer wall of the rotating column in radial direction; the slag collecting plate is provided with a plurality of filter holes, and the orientation of each filter hole is consistent with the rotation direction of the slag collecting plate; the filter hole surface of the slag collecting plate is attached to a non-filter cloth surface of a plurality of filter boxes.

[0014] Furthermore, the two adjacent transverse sliding blocks are connected by an iron chain.

[0015] Furthermore, the first driving device may be a motor, and the second driving device may be a cylinder.

[0016] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects: 1. The present invention drives the transverse sliding block to move back and forth horizontally in the transverse sliding groove through the second driving device, so that the medicine dispensing pipe disturbs the medicine solution and the copper-containing wastewater to be treated in the sedimentation tank during medicine dispensing, so that the medicine solution and the wastewater are combined more thoroughly; 2. The present invention provides a plurality of suction boxes to suck the flocculation, and drives all the suction boxes to move to one side through a second driving device, so as to squeeze and suck the flocculation and sediment attached to the outer surface of the suction box, so that the copper-containing wastewater in the flocculation is separated more thoroughly, thereby improving the recovery rate of the copper-containing wastewater; 3. The present invention provides a pressure plate in the filtration box, and seals the filter cloth in the filtration box through the pressure plate to avoid flocculation in the filtration box during the reaction; at the same time, the copper-containing wastewater in the flocculation is more completely separated from the flocculation through the additional squeezing of the pressure plate during filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 The present invention is shown in the embodiment Figure 1 Schematic diagram of the local structure; Figure 3 This is a schematic diagram showing the structure of the interior of the filtration box according to an embodiment of the present invention; Figure 4 For the embodiment of the present invention Figure 3 A partial enlarged view of the middle area A; Figure 5 This is a schematic structural diagram showing another perspective of the overall structure of an embodiment of the present invention; Figure 6 For the embodiment of the present invention Figure 4 A partial enlarged view of the middle area B; Explanation of reference numerals: 1, sedimentation tank [1]; 2, rotating column; 21, slag collecting plate; 22, filter hole; 3, placement rack; 31, horizontal sliding groove; 32, horizontal sliding block; 33, drug dispensing pipe; 34, drug delivery pipe; 35, drug dispensing hole; 351, second one-way valve; 4, second driving device; 41, iron chain; 5, filter box; 51, filter cloth; 52, column; 53, sliding column; 54, pressure plate; 55, first inclined block; 56, second inclined block; 57, compression spring; 6, piston plate; 61, piston rod; 62, third inclined block; 63, fourth inclined block; 64, first one-way valve. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 6 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0019] A device for treating copper-containing wastewater for copper foil production comprises a cylindrical sedimentation tank 1 with an opening at the upper end, a rotating column 2 driven by a first driving device is arranged at the axis of the sedimentation tank 1; the lower end surface of the rotating column 2 is rotatably connected to the bottom wall of the sedimentation tank 1, and a placing rack 3 is fixedly arranged on the upper end surface of the rotating column 2; a medicine dispensing unit and a recovery unit are arranged on the placing rack 3; the medicine dispensing unit injects medicine into the copper foil wastewater in the sedimentation tank 1 and stirs it, and the recovery unit recovers the wastewater and flocculation after precipitation; the medicine dispensing unit comprises a transverse sliding groove 31 penetrating through the upper end surface of the placing rack 3 and a plurality of slidingly connected to the transverse sliding groove 31 A transverse sliding block 32; a medicine dispensing tube 33 is vertically inserted at the center of the upper end surface of each transverse sliding block 32, and the upper ends of adjacent medicine dispensing tubes 33 are connected by a retractable medicine delivery tube 34; a plurality of medicine dispensing holes 35 are vertically opened on the peripheral wall of each medicine dispensing tube 33; a second driving device 4 is arranged on one transverse side of the placement rack 3, and the second driving device 4 drives the plurality of transverse sliding blocks 32 to slide back and forth in the transverse sliding groove 31; the recovery unit includes a filter box 5 arranged on the lower end surface of each medicine dispensing tube 33 and the interior of which is connected to the corresponding medicine dispensing tube 33, and a filter cloth 51 is arranged on the side wall of each filter box 5 on the opposite side.

[0020] In this embodiment, the rotating column 2 is driven by the first driving device to drive the placement rack 3 to rotate in the sedimentation tank 1; the second driving device 4 drives the horizontal sliding block 32 to move back and forth horizontally in the horizontal sliding groove 31, and then the medicine dispensing hole 35 is moved in the sedimentation tank 1 when dispensing medicine, so that the medicine and wastewater are combined more thoroughly; when the wastewater in the sedimentation tank 1 is precipitated, the copper-containing wastewater in the sedimentation tank 1 is extracted by the recovery unit, and the flocculation and sediment are attached to the surface of the filter cloth 51; the second driving device 4 is used to move all the filter boxes 5 to one side, forming flocculation and squeezing on the surface of the filter cloth 51, and then the flocculation and sediment are filtered by the recovery unit to reduce the copper-containing wastewater content in the sediment and flocculation, thereby improving the recovery efficiency of the copper-containing wastewater.

[0021] In this embodiment, the medicine delivery tube 34 can be connected to each medicine dispensing tube 33 by a rubber tube made of a flexible material, or can be connected to the corresponding medicine dispensing tube 33 by a retractable multi-section sleeve.

[0022] In order to further improve the recovery of copper-containing wastewater in flocculation and sediment, in the present invention, the recovery unit also includes a filter press mechanism; the filter press mechanism includes a column 52 inserted in the bottom wall of the inner cavity of the filter box 5; a transverse sliding column 53 is fixedly arranged on the upper end of the column 52, and both ends of the transverse sliding column 53 are slidably connected with a pressing plate 54, and the specifications of each pressing plate 54 are adapted to the corresponding side filter cloth 51; In this embodiment, through the setting of the transverse sliding column 53, when the flocculation and sediment need to be further processed, the second driving device 4 drives all the filter boxes 5 to move to one side, thereby squeezing the flocculation on the surface of the filter cloth 51; then the two pressure plates 54 in each filter box 5 move toward each other, thereby forming a supplementary squeezing of the flocculation and sedimentation, so that the copper-containing wastewater is separated from the flocculation and sedimentation more thoroughly.

[0023] In order to enable each group of pressing plates 54 to move, in the present invention, a piston plate 6 is slidably provided on the inner wall of each drug dispensing tube 33, and a piston rod 61 is provided on the lower end surface of the piston plate 6; the pressing plates 54 on both sides are respectively provided with a first inclined block 55 and a second inclined block 56; a third inclined block 62 adapted to the first inclined block 55 and a fourth inclined block 63 adapted to the second inclined block 56 are provided at the bottom of the piston rod 61; the piston rod 61 drives the third inclined block 62 to move toward the outside of the filter box 5 through the first inclined block 55, and the second inclined block 56 drives the fourth inclined block 63 to move toward the inside of the filter box 5; In this embodiment, when it is necessary to filter the flocculation, the second driving device 4 drives all the horizontal sliding blocks 32 to move to one side, and the negative pressure device is connected to the drug delivery tube 34 to generate negative pressure in each drug delivery tube 33. The piston plate 6 is driven upward by the negative pressure, and then the piston rod 61 is driven upward, so that the first inclined block 55 drives the third inclined block 62 to move horizontally, and then drives the corresponding pressure plate 54 to move horizontally outward; similarly, the second inclined block 56 drives the corresponding pressure plate 54 to move horizontally inward through the fourth inclined block 63; the two adjacent filter boxes 5 are squeezed against each other by the pressure plate 54, so that the copper-containing wastewater in the flocculation attached to the surface of the filter cloth 51 is separated from the flocculation, and the squeezed copper-containing wastewater enters the filter box 5 through the filter cloth 51.

[0024] In order to avoid interference between the transportation of copper-containing wastewater and the movement of the piston rod 61, in the present invention, the diameter of the piston rod 61 is smaller than the diameter of the piston plate 6; a first one-way valve 64 is provided on the piston plate 6, and the copper-containing wastewater in the filter box 5 enters the medicine dispensing tube 33 through the first one-way valve 64 under the action of negative pressure; In this embodiment, when medicine is distributed to the sedimentation tank 1 through the medicine distribution pipe 33, the first one-way valve 64 on the piston plate 6 is closed, and the medicine enters the sedimentation tank 1 through the medicine distribution hole 35; when the flocculation is filtered through the filter box 5, the first one-way valve 64 is opened, and the copper-containing wastewater passes through the first one-way valve 64 through the piston plate 6 and enters the medicine distribution pipe 33 upward, and then is discharged through the medicine delivery pipe 34.

[0025] In the present invention, each medicine dispensing hole 35 is provided with a second one-way valve 351; In this embodiment, through the setting of the second one-way valve 351, when the sedimentation tank 1 is coated with medicine, the second one-way valve 351 is opened, and the medicine in the medicine dispensing tube 33 enters the second one-way valve 351 through the medicine dispensing hole 35 and flows into the sedimentation tank 1; when the filtration mechanism is working, the second one-way valve 351 is closed to prevent the copper-containing wastewater extracted by the filtration mechanism from flowing back to the sedimentation tank 1 through the medicine dispensing hole 35.

[0026] In order to prevent the copper-containing wastewater in the sedimentation tank 1 from entering the filter box 5 through the filter cloth 51 when the filter mechanism is not in operation, and then forming flocculation in the filter box 5, in the present invention, compression springs 57 are provided at both ends of the transverse sliding column 53. The compression springs 57 in the initial state always drive the corresponding pressing plate 54 to be in close contact with the inner surface of the filter cloth 51 on the corresponding side; In this embodiment, by setting the compression spring 57, the pressure plate 54 can still be in close contact with the inner side of the corresponding filter cloth 51 when the filtration mechanism is not in working state; thereby preventing the copper-containing wastewater that has not yet reacted completely from entering the filtration box 5, reacting with the medicine in the filtration box 5 and forming flocculation, causing blockage inside the filtration box 5.

[0027] In order to further improve the recovery of copper-containing wastewater in flocculation, a slag collecting plate 21 is fixedly arranged on the outer wall of the rotating column 2 in the radial direction; the slag collecting plate 21 is provided with a plurality of filter holes 22, and the direction of each filter hole 22 is consistent with the rotation direction of the slag collecting plate 21; the filter hole surface of the slag collecting plate 21 is attached to a non-filter cloth surface of the plurality of suction filter boxes 5; In this embodiment, by setting the slag collecting plate 21, when the rotating column 2 rotates, the slag collecting plate 21 can rotate and filter the flocculation and sediment at the bottom of the sedimentation tank 1 and intercept them on the surface of the filter hole, so that the filtration box 5 can further process the flocculation and sediment.

[0028] In order to facilitate resetting, in the present invention, two adjacent transverse sliding blocks 32 are connected by an iron chain 41 .

[0029] In the present invention, the first driving device may be a motor, and the second driving device 4 may be a cylinder.

[0030] The working principle of the present invention is: Embodiment 1: When the copper-containing wastewater in the sedimentation tank 1 needs to be treated, the first driving device drives the rotating column 2 to drive the placement frame 3 to rotate in the sedimentation tank 1, and delivers the medicine to the medicine delivery pipe 34. The medicine enters each medicine dispensing pipe 33 through the medicine delivery pipe 34, and then enters the medicine dispensing hole 35 through the second one-way valve 351 on the medicine dispensing pipe 33, and enters the sedimentation tank 1 through the medicine dispensing hole 35 to combine with the copper-containing wastewater to be treated; the second driving device 4 then drives the transverse sliding block 32 to reciprocate horizontally in the transverse sliding groove 31, and then the medicine dispensing pipe 33 disturbs the medicine and the copper-containing wastewater to be treated in the sedimentation tank 1 during the medicine dispensing, so that the medicine and the wastewater are combined more thoroughly; At this time, the compression spring 57 drives the corresponding pressure plate 54 to be in close contact with the inner wall of the adjacent filter cloth 51, thereby preventing the copper-containing wastewater that has not yet reacted completely from entering the filter box 5, reacting with the medicine in the filter box 5 to form flocculation, and causing blockage inside the filter box 5.

[0031] Embodiment 2: When the flocculants and copper-containing wastewater are generated, stop delivering the medicine into the medicine delivery pipe 34, and connect the medicine delivery pipe 34 to the suction pump; under the action of the suction pump, negative pressure is generated in each medicine distribution pipe 33, and the negative pressure drives the piston plate 6 to drive the piston rod 61 to move upward; the piston rod 61 moves upward and drives the third inclined block 62 to move toward the outside of the filter box 5 through the first inclined block 55, thereby driving the corresponding pressure plate 54 to move toward the outside of the filter box 5; the fourth inclined block 63 is driven to move toward the inside of the filter box 5 through the second inclined block 56, thereby driving the corresponding pressure plate 54 to move toward the inside of the filter box 5, so that the copper foil wastewater that has completed the reaction enters the filter box 5 through the filter cloth 51 under the action of negative pressure, and enters the medicine delivery pipe 34 through the medicine distribution pipe 33 and is finally discharged.

[0032] Embodiment three: The first driving device drives the rotating column 2 to rotate, so that the slag collecting plate 21 can rotate and filter the flocculation and sediment at the bottom of the sedimentation tank 1 and intercept them on the surface of the filter hole surface; when the slag collecting plate 21 has intercepted the flocculation and sediment at the bottom, the first driving device stops rotating; the second driving device 4 drives all the suction filter boxes 5 to move to one side through the transverse sliding block 32 and the medicine dispensing tube 33, so that the adjacent suction filter boxes 5 are closely attached; when multiple suction filter boxes 5 move to one side, the side wall of the suction filter box 5 scrapes off the flocculation attached to the filter hole surface of the slag collecting plate 21, and adsorbs it to the outer surface of the filter cloth 51 under the action of negative pressure; At this time, the suction pump is still working, and the pressure plate 54 pushed outward squeezes the filter cloth 51 of the filter box 5 outward. Under the further squeezing effect, the flocculation and sediment on the filter cloth 51 are further separated from the copper-containing wastewater contained in the flocculation and sediment, and are sucked out and discharged by the suction pump.

[0033] Embodiment 4: When the flocculation and sediment are completely sucked by the filter press, the second driving device 4 drives the adjacent transverse sliding block 32 to move back, and drives other transverse sliding blocks 32 through the iron chain 41, thereby driving all the filter boxes 5 to reset; the suction pump works intermittently; When the suction pump stops suctioning, the piston plate 6 drives the piston rod 61 to reset, and each compression spring 57 drives the corresponding pressing plate 54 to reset; when the pressing plate 54 on the side of the second inclined block 56 is reset, the flocculation attached to the outer surface of the filter cloth 51 of the corresponding side filter box 5 is pushed out; When the suction pump starts to suck, the piston plate 6 drives the piston rod 61 to move upward, and the first inclined block 55 drives the third inclined block 62 to push the corresponding pressing plate 54 outward, thereby pushing out the flocculation attached to the outer surface of the filter cloth 51 of the corresponding side suction filter box 5.

[0034] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A copper-containing wastewater treatment device for copper foil production, comprising a sedimentation tank (1), wherein the sedimentation tank (1) is provided with a rotating column (2) and a first driving device for driving the rotating column (2) to rotate; the lower end surface of the rotating column (2) is rotatably connected to the bottom wall of the sedimentation tank (1), and the upper end surface of the rotating column (2) is fixedly provided with a placement frame (3), characterized in that: The upper end surface of the placement rack (3) is provided with a transverse sliding groove (31) extending therethrough; a plurality of transverse sliding blocks (32) are slidably connected in the transverse sliding groove (31); a drug dispensing tube (33) is vertically inserted into the center of the upper end surface of each transverse sliding block (32), and the drug dispensing tube (33) is connected via a drug delivery tube (34); a plurality of drug dispensing holes (35) are vertically provided on the peripheral wall of each drug dispensing tube (33); a second driving device (4) is provided on one side of the placement rack (3), and the second driving device (4) drives the plurality of transverse sliding blocks (32) to slide back and forth in the transverse sliding groove (31); The lower end surface of each drug dispensing tube (33) is fixedly connected to a filter box (5), and the side wall of each filter box (5) facing each other is provided with a filter cloth (51).

2. The copper-containing wastewater treatment device for copper foil production according to claim 1, characterized in that: A column (52) is provided on the bottom wall of the inner cavity of the suction filter box (5); a transverse sliding column (53) is fixedly provided on the upper end of the column (52); both ends of the transverse sliding column (53) are slidably connected to a pressing plate (54); the specification of each pressing plate (54) is compatible with the corresponding side filter cloth (51).

3. The copper-containing wastewater treatment device for copper foil production according to claim 1, characterized in that: A piston plate (6) is slidably provided on the inner wall of each drug dispensing tube (33), and a piston rod (61) is provided on the lower end surface of the piston plate (6); the pressure plates (54) on both sides are respectively provided with a first inclined block (55) and a second inclined block (56); a third inclined block (62) matched with the first inclined block (55) and a fourth inclined block (63) matched with the second inclined block (56) are provided at the bottom of the piston rod (61); the piston rod (61) drives the third inclined block (62) to move toward the outside of the filter box (5) through the first inclined block (55), and the second inclined block (56) drives the fourth inclined block (63) to move toward the inside of the filter box (5).

4. The copper-containing wastewater treatment device for copper foil production according to claim 3 is characterized in that: The diameter of the piston rod (61) is smaller than the diameter of the piston plate (6); a first one-way valve (64) is provided on the piston plate (6); and copper-containing wastewater in the filtration box (5) enters the drug dispensing tube (33) through the first one-way valve (64) under the action of negative pressure.

5. The copper-containing wastewater treatment device for copper foil production according to claim 1, characterized in that: Each of the medicine dispensing holes is provided with a second one-way valve (351).

6. The copper-containing wastewater treatment device for copper foil production according to claim 3, characterized in that: Compression springs (57) are provided at both ends of the transverse sliding column (53). In the initial state, the compression springs (57) always drive the corresponding pressing plate (54) to be in close contact with the inner surface of the filter cloth (51) on the corresponding side.

7. The copper-containing wastewater treatment device for copper foil production according to claim 1, characterized in that: A slag collecting plate (21) is fixedly provided on the outer wall of the rotating column (2) in a radial direction; the slag collecting plate (21) is provided with a plurality of filter holes (22), and the orientation of each filter hole (22) is consistent with the rotation direction of the slag collecting plate (21); and the filter hole surface of the slag collecting plate (21) is in contact with a non-filter cloth surface of the plurality of filter boxes (5).

8. The copper-containing wastewater treatment device for copper foil production according to claim 1, characterized in that: The two adjacent transverse sliding blocks (32) are connected by an iron chain (41).

9. The copper-containing wastewater treatment device for copper foil production according to claim 1, characterized in that: The first driving device may be a motor, and the second driving device (4) may be a cylinder.

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