A copper polishing water recycling system

Abstract

This invention discloses a copper grinding water recycling system for treating wastewater and copper sludge generated during the grinding of printing rollers. The steps include: introducing wastewater into a wastewater tank and discharging sludge into a sedimentation tank; allowing the sludge to settle in the sedimentation tank and introducing the floating wastewater into the wastewater tank; discharging wastewater from the wastewater tank into a filtration mechanism for filtration; and then recycling the filtered wastewater for secondary use. This copper grinding water recycling system, through the coordinated operation of the wastewater tank, sedimentation tank, filtration mechanism, sludge pressing mechanism, and water storage tank, constructs a closed-loop treatment process for wastewater and copper sludge. It not only achieves multi-stage, thorough filtration and recycling of wastewater, effectively saving water resources and reducing water costs, but also efficiently separates and centrally treats copper sludge, improving the copper resource recovery rate. Simultaneously, it avoids environmental pollution caused by direct discharge of wastewater and indiscriminate disposal of copper sludge, solving the problems of incomplete treatment and serious resource waste inherent in existing technologies.

Description

Technical Field

[0001] This invention relates to the field of printing roller processing technology, specifically a copper grinding water recycling system. Background Technology

[0002] During the production and processing of printing rollers, grinding is required to ensure the surface precision and performance of the rollers. This grinding process generates a large amount of wastewater containing copper sludge. This wastewater not only contains suspended copper particles but may also contain additives used in the grinding process. Direct discharge of this wastewater would result in a serious waste of water resources. Furthermore, copper, as a heavy metal pollutant, would cause irreversible damage to the soil and aquatic ecosystems. In addition, copper sludge itself has certain recycling value, and direct disposal would lead to resource loss.

[0003] Currently, the industry mostly uses simple sedimentation followed by discharge or coarse filtration to treat wastewater from printing roller grinding. Existing treatment technologies have several shortcomings: First, insufficient sedimentation and poor filtration result in water quality that fails to meet recycling standards, hindering effective water resource recovery. Second, the separation efficiency between copper sludge and wastewater is low, copper sludge recovery is incomplete, and resource utilization is low. Third, existing treatment systems are mostly single-stage processes, failing to form a closed-loop treatment process of wastewater-copper sludge-reclaimed water, leading to the risk of secondary pollution during treatment and high treatment costs, which cannot meet the current industry development needs for energy conservation, environmental protection, and resource recycling. Summary of the Invention

[0004] The purpose of this invention is to provide a copper grinding water recycling system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a copper grinding water recycling system for treating wastewater and copper sludge generated during the grinding of printing rollers, comprising the following steps: S1: Introduce wastewater into a wastewater tank and discharge sludge into a sedimentation tank; S2: The sludge settles in the sedimentation tank, and the floating wastewater is introduced into the wastewater tank; S3: The wastewater tank discharges wastewater into the filtration mechanism, which filters the wastewater. The filtered wastewater is then recycled and stored for reuse. S4: The sedimentation tank discharges sludge to the sludge pressing mechanism, which presses the sludge to remove water and discharges it separately. S5: The wastewater squeezed out by the sludge pressing mechanism flows into a water storage tank. The water storage tank is equipped with a water pump, which introduces the wastewater from the water storage tank into the wastewater tank. S6: The sludge after being pressed in the water storage tank is discharged into the sludge storage box for unified treatment.

[0006] Preferably, the wastewater tank is provided with a drain pipe, which is used to discharge wastewater to the filtration mechanism, and the discharge end of the drain pipe points to the filtration mechanism.

[0007] Preferably, the filtration mechanism includes a first sedimentation layer, a second sedimentation layer, and a water storage layer; The first sedimentation layer, the second sedimentation layer, and the water storage layer are arranged in a longitudinal array; Both the first and second sedimentation layers contain sedimentation pads.

[0008] Preferably, the top of the sedimentation pad is arc-shaped, with one end lower than the other. The sedimentation pad has a drain outlet at its water outlet end; The drain outlets on the first sedimentation layer and the drain outlets on the second sedimentation layer are in opposite positions.

[0009] Preferably, a pumping pipe is provided on the water storage layer, and the pumping pipe is used to draw out and return the sewage in the water storage layer.

[0010] Preferably, the discharge end of the sedimentation tank is provided with an external discharge pipe, which is connected to the sludge pressing mechanism; The sludge pressing mechanism includes: an inlet for receiving the sludge and connecting to the external discharge pipe, a transmission component is provided thereon, a reduction component is connected to the power end of the transmission component, and a motor is provided on the reduction component; The output end of the transmission component is provided with a sludge pressing chamber, which is used to press the sludge.

[0011] Preferably, the motor is electrically connected to a control panel, which is used to control the motor.

[0012] Preferably, one end of the sludge pressing chamber is provided with a water outlet pipe, and the output end of the water outlet pipe points to the water storage tank; The mud-pressing chamber has a mud discharge port on one side, which is used to discharge the sludge after pressing. A mud storage box is provided below the mud discharge port.

[0013] Preferably, the water pump is connected to a water inlet pipe, and the outlet end of the water inlet pipe is connected to the sewage tank.

[0014] Preferably, the upper half of the sedimentation tank is provided with a connecting pipe, which is connected to the sewage tank.

[0015] Compared with existing technologies, the beneficial effects of this invention are as follows: This copper sludge recycling system, through the coordinated operation of a wastewater tank, sedimentation tank, filtration mechanism, sludge pressing mechanism, and water storage tank, constructs a closed-loop treatment process for wastewater and copper sludge. It can not only achieve multi-stage and thorough filtration and recycling of wastewater, effectively saving water resources and reducing water costs, but also efficiently separate copper sludge and centrally treat it, improving the copper resource recovery rate. At the same time, it avoids environmental pollution caused by direct discharge of wastewater and random disposal of copper sludge. It solves the problems of incomplete treatment, serious resource waste, and easy secondary pollution caused by existing technologies, and takes into account the needs of energy conservation, environmental protection, and resource recycling, thus having significant economic and environmental benefits. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the process of the present invention; Figure 2 This is a front view schematic diagram of the overall structure of the present invention; Figure 3 This is a rear view schematic diagram of the overall structure of the present invention; Figure 4 This is a schematic diagram of the filtration mechanism of the present invention; Figure 5 This is a schematic diagram of the sludge pressing mechanism of the present invention.

[0017] In the diagram: 1. Wastewater tank; 11. Drain pipe; 2. Filtration mechanism; 21. First sedimentation layer; 22. Second sedimentation layer; 23. Water storage layer; 24. Sedimentation pad; 25. Drain outlet; 26. Pumping pipe; 3. Sedimentation tank; 31. External discharge pipe; 32. Connecting pipe; 4. Sludge pressing mechanism; 41. Feed inlet; 42. Transmission component; 43. Reducer; 44. Motor; 45. Control panel; 46. Sludge pressing bin; 47. Water outlet pipe; 48. Sludge discharge outlet; 49. Sludge storage box; 5. Water storage tank; 51. Water pump; 52. Water supply pipe. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-5 This invention provides a technical solution: a copper grinding water recycling system, which is used to treat wastewater and copper sludge generated from grinding printing rollers, and diverts them separately. The system is characterized by the following steps: S1: Sewage is introduced into sewage tank 1, which is used to load sewage. Sludge is discharged into sedimentation tank 3, which is used to store sludge.

[0020] S2: The sludge settles in the sedimentation tank 3, and the floating sewage is introduced into the sewage tank 1. The sludge in the sedimentation tank 3 will undergo preliminary sedimentation. As the sludge settles, the sewage will appear on the upper layer and finally be diverted to the sewage tank 1 through the connecting pipe 32.

[0021] S3: Wastewater tank 1 discharges wastewater into filter mechanism 2, which filters the wastewater. The filtered wastewater is then returned to storage for reuse. Filter mechanism 2 filters the wastewater through a layer-by-layer sedimentation process, causing heavy metals in the wastewater to precipitate. Finally, the wastewater is returned to the water storage tank for grinding water, thus completing the water recycling effect.

[0022] S4: The sedimentation tank 3 discharges sludge to the sludge pressing mechanism 4, which presses the sludge to remove water and discharges it separately.

[0023] S5: The wastewater squeezed out by the sludge pressing mechanism 4 flows into the water storage tank 5. The water storage tank 5 is equipped with a water pump 51, which introduces the wastewater in the water storage tank 5 into the wastewater tank 1.

[0024] S6: The sludge from the sludge pressing in the water storage tank 5 is discharged into the sludge storage box 49 for unified treatment.

[0025] First, the wastewater generated from grinding the printing rollers is introduced into the wastewater tank 1 and loaded, while the sludge is discharged into the sedimentation tank 3 for storage. Then, the sludge in the sedimentation tank 3 undergoes preliminary sedimentation, and the wastewater floating on the upper layer is guided back to the wastewater tank 1 through the connecting pipe 32. The wastewater tank 1 then discharges wastewater into the filtration mechanism 2, which uses a layer-by-layer sedimentation method to precipitate heavy metals in the wastewater. The filtered wastewater is returned to the grinding water storage tank for storage for secondary use. The sludge settled in the sedimentation tank 3 is discharged to the sludge pressing mechanism 4, which presses the sludge to separate the water. The pressed wastewater flows to the water storage tank 5, and the water pump 51 in the water storage tank 5 introduces the wastewater into the wastewater tank 1 to participate in the circulation again. The sludge after the sludge pressing is finally discharged into the sludge storage box 49 through the sludge discharge port 48 for unified treatment, thus completing the entire process of efficient separation of wastewater and sludge and wastewater recycling.

[0026] Wastewater tank 1 is equipped with a drain pipe 11, which is used to discharge wastewater to the filter mechanism 2. The discharge end of the drain pipe 11 points to the filter mechanism 2. This design allows for directional discharge of wastewater to the filter mechanism 2. A water valve is built into the drain pipe 11 to control the flow rate of the drain pipe 11 and ensure that the flow rate of the drain pipe 11 is not too fast, thereby weakening the water treatment effect of the filter mechanism 2.

[0027] The filtration mechanism 2 includes a first sedimentation layer 21, a second sedimentation layer 22, and a water storage layer 23. The first sedimentation layer 21, the second sedimentation layer 22, and the water storage layer 23 are arranged in a longitudinal array. The advantage of this design is that when wastewater from the wastewater tank 1 is discharged into the filtration mechanism 2 through the drain pipe 11, it is first caught by the first sedimentation layer 21, thus undergoing preliminary filtration. At this time, the wastewater in the first sedimentation layer 21, after the precipitation of heavy metals, flows to the lower end of the sedimentation pad 24. As water is continuously added, the wastewater eventually overflows the sedimentation pad 24 and flows through the drain outlet 25 into the second sedimentation layer 22. The second sedimentation layer 22 then undergoes secondary sedimentation treatment, and finally, the wastewater collects in the water storage layer 23. Both the first sedimentation layer 21 and the second sedimentation layer 22 are equipped with sedimentation pads 24. The top of the sedimentation pad 24 is arc-shaped, with one end lower than the other. A drain outlet 25 is provided at the outlet end of the sedimentation pad 24. The drain outlets 25 on the first sedimentation layer 21 and the second sedimentation layer 22 are in opposite positions. If the drain outlets 25 are located on the same side, the filtered wastewater in the first sedimentation layer 21 will directly pass through the second sedimentation layer 22 and flow to the water storage layer 23 without undergoing a second filtration. A pumping pipe 26 is provided on the water storage layer 23. The water storage layer 23 also undergoes sedimentation. The pumping pipe 26 diverts the wastewater above the water storage layer 23 for secondary use. The pumping pipe 26 is used to draw back the wastewater in the water storage layer 23.

[0028] The working principle of the sewage tank 1 and the filtration mechanism 2 is as follows: the sewage tank 1 discharges sewage into the filtration mechanism 2 through the drain pipe 11 installed on it. The water valve built into the drain pipe 11 can control the sewage flow rate to avoid weakening the water treatment effect of the filtration mechanism 2 due to the longitudinal array arrangement of the first sedimentation layer 21, the second sedimentation layer 22 and the water storage layer 23 of the filtration mechanism 2. After the sewage is discharged through the drain pipe 11, it first enters the first sedimentation layer 21. The sedimentation pad 24 in the first sedimentation layer 21 has an arc-shaped top and is lower at one end and higher at the other end, which can cause heavy metals in the sewage to move towards the sedimentation pad 24. 4. The lower end of the sedimentation layer 24 collects and settles. As sewage is continuously injected, the sewage overflows the sedimentation pad 24 and flows through the drain 25 at its outlet to the second sedimentation layer 22. Since the drain 25 of the first sedimentation layer 21 and the second sedimentation layer 22 are in opposite positions, direct cross-flow of sewage can be avoided, ensuring that the sedimentation pad 24 in the second sedimentation layer 22 can perform secondary sedimentation on the sewage. The sewage after secondary sedimentation finally collects in the water storage layer 23. After the water storage layer 23 further settles the sewage, the clean water above the water storage layer 23 is drawn out and returned through the pumping pipe 26 opened on it, realizing secondary utilization.

[0029] The discharge end of the sedimentation tank 3 is equipped with an external discharge pipe 31, which guides the sludge in the sedimentation tank 3 into the sludge pressing mechanism 4. The external discharge pipe 31 is connected to the sludge pressing mechanism 4. The sludge pressing mechanism 4 includes: an inlet 41 for receiving sludge and connecting to the external discharge pipe 31; the inlet 41 is connected to the outlet of the external discharge pipe 31, thereby introducing the sludge in the sedimentation tank 3 into the sludge pressing mechanism 4; a transmission component 42 is provided on the transmission component 42; a reduction component 43 is connected to the power end of the transmission component 42; the reduction component 43 is used to reduce the speed of the motor 44, thereby increasing the torque; the motor 44 is mounted on the reduction component 43; and a sludge pressing chamber 46 is provided at the output end of the transmission component 42. The sludge pressing chamber 46 is used to process the sludge, separate the water contained in the sludge, and maximize the secondary use of water. The motor 44 is electrically connected to a control panel 45, which is used to adjust the power of the motor 44 and control the motor 44. One end of the sludge pressing chamber 46 is equipped with a water outlet pipe 47, which is used to discharge the wastewater extracted from the sludge. The output end of the water outlet pipe 47 points to the water storage tank 5, and the wastewater is finally discharged into the water storage tank 5 through the water outlet pipe 47. A sludge discharge port 48 is provided on one side of the sludge pressing chamber 46, which points to the sludge storage box 49. The sludge discharge port 48 is used to discharge the sludge after pressing. Below the sludge discharge port 48 is the sludge storage box 49, which is used to store the sludge discharged after pressing. Then, it is uniformly treated. The heavy metals filtered and precipitated from the filtration mechanism 2 are collected into sludge. Alternatively, the sludge can be manually fed into the sludge pressing mechanism 4 for pressing.

[0030] An external discharge pipe 31 at the discharge end of the sedimentation tank 3 guides the settled sludge to the pressing mechanism 4. The external discharge pipe 31 is connected to the inlet 41 of the pressing mechanism 4, thus smoothly introducing the sludge from the sedimentation tank 3 into the pressing mechanism 4. Simultaneously, the heavy metal sludge formed by filtration and sedimentation in the filter mechanism 2 can also be manually added to the pressing mechanism 4 for further processing. The power of the motor 44 can be adjusted and controlled via a control panel 45 electrically connected to the motor 44. The reduction gear 43 connected to the motor 44 reduces the motor speed to increase torque. The reduction gear 43 drives the transmission... When the actuator 42 operates, the transmission component 42 drives the sludge pressing chamber 46 at its output end to work. The sludge pressing chamber 46 processes various types of sludge to separate the water and maximize the reuse of water. The water outlet pipe 47 at one end of the sludge pressing chamber 46 discharges the separated wastewater. The output end of the water outlet pipe 47 points to the water storage tank 5, and the wastewater is finally discharged into the water storage tank 5. The sludge discharge port 48 on one side of the sludge pressing chamber 46 is used to discharge the sludge after pressing. Below the sludge discharge port 48 is a sludge storage box 49. The sludge after pressing falls into the sludge storage box 49 through the sludge discharge port 48 for storage, so as to facilitate subsequent unified treatment.

[0031] The water pump 51 is connected to the water inlet pipe 52. The water storage tank 5 is used to store the wastewater discharged from the sludge pressing mechanism 4 after sludge pressing. The wastewater is finally diverted to the wastewater tank 1 through the water pump 51 and the water inlet pipe 52. The discharge end of the water inlet pipe 52 is connected to the wastewater tank 1. Then, the wastewater in the wastewater tank 1 is filtered together with the previous wastewater through the filtration mechanism 2 and returned to the previous position for secondary use.

[0032] The upper half of the sedimentation tank 3 is provided with a connecting pipe 32. There are two sedimentation tanks 3, and the two sedimentation tanks 3 are also connected to each other by a connecting pipe 32. The connecting pipe 32 is located in the middle and lower section and is connected to the sewage tank 1. The connecting pipe 32 is connected in the upper half section. The connecting pipe 32 is used to guide the sewage generated after sedimentation in the upper half of the connecting pipe 32 to the sewage tank 1.

[0033] When using the copper-refined water recycling system, wastewater is first introduced into wastewater tank 1 for loading, and sludge is discharged into two mutually cooperating sedimentation tanks 3 for storage. The middle and lower sections of the two sedimentation tanks 3 are connected by a connecting pipe 32. After the sludge in the sedimentation tanks 3 has completed preliminary sedimentation, the supernatant wastewater in the upper half of the tank is diverted back to wastewater tank 1 through the connecting pipe 32 in the upper half of the sedimentation tank 3. Wastewater tank 1 discharges wastewater directionally to the filter mechanism 2 through a drain pipe 11 with a built-in water valve. The water valve can control the flow rate to avoid weakening the filtration effect. The first sedimentation layer 21 of the filter mechanism 2... The first sedimentation layer 21 and the second sedimentation layer 22 are arranged in a longitudinal array. Wastewater first enters the first sedimentation layer 21 and undergoes initial sedimentation of heavy metals through a sedimentation pad 24 with an arc-shaped top and one end lower than the other. After the wastewater overflows the sedimentation pad 24, it flows to the second sedimentation layer 22 through the drain outlet 25. Because the drain outlets 25 of the first sedimentation layer 21 and the second sedimentation layer 22 are in opposite positions, cross-contamination of wastewater is avoided and secondary sedimentation is achieved. The wastewater after secondary sedimentation gathers in the water storage layer 23 for further sedimentation. Finally, the upper clear water is drawn out and returned through the pumping pipe 26 on the water storage layer 23. The sludge formed by sedimentation in the filtration mechanism 2 can be manually fed into the pressing mechanism 4 for processing. The sludge settled in the sedimentation tank 3 is guided through the discharge pipe 31 to the inlet 41 of the pressing mechanism 4, and then enters the pressing mechanism 4. The power of the motor 44 can be adjusted and controlled via the control panel 45 electrically connected to the motor 44. The reduction gear 43 connected to the motor 44 reduces the speed and increases the torque, driving the transmission component 42 to operate the pressing chamber 46. The pressing chamber 46 performs pressing and dewatering treatment on the sedimentation tank 3 and the manually fed sludge. The wastewater extracted from the pressing process is discharged into the storage tank 5 through the outlet pipe 47 at one end of the pressing sludge bin 46. The sludge after pressing falls into the storage tank 49 below through the sludge discharge port 48 on one side of the pressing sludge bin 46 for storage and unified treatment. The wastewater from pressing the sludge stored in the storage tank 5 is diverted back to the wastewater tank 1 through the water pump 51 and the water inlet pipe 52 connected to the water pump 51. After merging with the original wastewater in the wastewater tank 1, it enters the filtration mechanism 2 again through the drain pipe 11 to complete filtration. Finally, it flows back to the grinding water storage tank for secondary use, thus forming a closed-loop recycling process for wastewater treatment.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A copper grinding water recycling system, used to treat wastewater and copper sludge generated during the grinding of printing rollers, characterized in that... The steps include: S1: Introduce wastewater into wastewater tank (1) and discharge sludge into sedimentation tank (3); S2: The sludge settles in the sedimentation tank (3), and the floating wastewater is introduced into the wastewater tank (1); S3: The sewage tank (1) discharges sewage into the filtration mechanism (2), the filtration mechanism (2) filters the sewage, and the filtered sewage is recycled and stored for secondary use; S4: The sedimentation tank (3) discharges sludge to the sludge pressing mechanism (4), which presses the sludge to remove water and discharges it separately; S5: The wastewater squeezed out by the sludge pressing mechanism (4) flows into the water storage tank (5), and the water storage tank (5) is equipped with a water pump (51). The water pump (51) introduces the wastewater in the water storage tank (5) into the wastewater tank (1); S6: The sludge after being pressed in the water storage tank (5) is discharged into the sludge storage box (49) for unified treatment.

2. The copper grinding water recycling system according to claim 1, characterized in that... The sewage tank (1) is equipped with a drain pipe (11), which is used to discharge sewage to the filter mechanism (2). The discharge end of the drain pipe (11) points to the filter mechanism (2).

3. The copper grinding water recycling system according to claim 1, characterized in that... The filtration mechanism (2) includes a first sedimentation layer (21), a second sedimentation layer (22), and a water storage layer (23); The first sedimentation layer (21), the second sedimentation layer (22), and the water storage layer (23) are arranged in a longitudinal array; Both the first sedimentation layer (21) and the second sedimentation layer (22) are provided with sedimentation pads (24).

4. A copper grinding water recycling system according to claim 3, characterized in that... The top of the sedimentation pad (24) is arc-shaped, with one end lower than the other. The sedimentation pad (24) has a drain outlet (25) at its outlet end; The drain outlet (25) on the first sedimentation layer (21) and the drain outlet (25) on the second sedimentation layer (22) are in opposite positions.

5. A copper grinding water recycling system according to claim 3 or 4, characterized in that... A water pumping pipe (26) is provided on the water storage layer (23), and the water pumping pipe (26) is used to draw out the sewage in the water storage layer (23) and return it.

6. A copper grinding water recycling system according to claim 1, characterized in that... The sedimentation tank (3) is provided with an external discharge pipe (31) at its discharge end, and the external discharge pipe (31) is connected to the sludge pressing mechanism (4); The sludge pressing mechanism (4) includes: an inlet (41) for receiving sludge connected to the external discharge pipe (31), a transmission component (42) thereon, a speed reducer (43) connected to the power end of the transmission component (42), and a motor (44) thereon on the speed reducer (43); The output end of the transmission component (42) is provided with a sludge pressing chamber (46), which is used to press the sludge.

7. A copper grinding water recycling system according to claim 6, characterized in that... The motor (44) is electrically connected to a control panel (45), which is used to control the motor (44).

8. A copper grinding water recycling system according to claim 6, characterized in that... One end of the mud-pressing chamber (46) is provided with a water outlet pipe (47), and the output end of the water outlet pipe (47) points to the water storage tank (5); The mud-pressing chamber (46) has a mud discharge port (48) on one side, which is used to discharge the sludge after pressing. A mud storage box (49) is provided below the mud discharge port (48).

9. A copper grinding water recycling system according to claim 6, characterized in that... The water pump (51) is connected to a water inlet pipe (52), and the outlet end of the water inlet pipe (52) is connected to the sewage tank (1).

10. A copper grinding water recycling system according to claim 1 or 6, characterized in that... The upper half of the sedimentation tank (3) is provided with a connecting pipe (32), which is connected to the sewage tank (1).

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