Wastewater treatment device and method for corrosion foil production

Abstract

The invention discloses a wastewater treatment device and method for corrosion foil production, and relates to the technical field of corrosion foil wastewater treatment. The system comprises a wastewater treatment tank used for storing and collecting foil corrosion wastewater, and further comprises a filtering unit, a wastewater inlet pipe used for collecting wastewater is arranged between the filtering unit and the wastewater treatment tank, and a filtering assembly and a dredging assembly are arranged in the filtering unit; and the precipitation unit is used for collecting the wastewater filtered by the filtering unit and comprises a dosing assembly and a filter pressing assembly. The sewage treatment device has the advantages that by adopting multi-stage treatment modes such as filtering of the filtering disc, neutralization precipitation, flocculation precipitation and precipitate extrusion, wastewater can be thoroughly purified, intermittent dredging of the filtering holes can be realized during treatment, the filtering holes are effectively prevented from being blocked, and the sewage treatment effect is improved. After precipitation, the wastewater in the precipitate can be thoroughly pressed and removed in a reciprocating extrusion manner, so that the precipitate is thoroughly separated from the wastewater, and the purification effect of the wastewater is better.

Description

Technical Field

[0001] The present invention relates to the technical field of waste water treatment for etched foils, and particularly to a waste water treatment device and method for the production of etched foils. Background Art

[0002] The waste water from etched foils refers to the waste water generated during the production of etched foils for aluminum electrolytic capacitors, mainly from processes such as etching and formation. The waste water from etched foils usually has characteristics such as complex composition and high pollution, so a waste water treatment device is required to purify it to reduce the pollution level of the waste water.

[0003] Existing waste water treatment devices use various methods to treat the waste water from etched foils. For example, a waste water treatment device for etched foil production with the publication number CN214680287U includes a pipeline, a rotating shaft is rotatably connected inside the pipeline, a filter screen is fixedly sleeved outside the rotating shaft, a first gear is fixedly sleeved at one end of the rotating shaft extending outside the pipeline, a fixing plate fixedly connected to the outer wall of the pipeline is arranged above the first gear, and a push rod motor is fixedly connected to the bottom of the fixing plate; When the existing waste water treatment device treats the etched foil, it usually uses the method of filtering with a filter screen to filter large-volume impurities in the waste water. However, the filter holes on the filter screen are prone to blockage after long-term use, affecting its filtering effect. For example, in the above-mentioned prior art, the device uses the method of turning the filter screen over and using double-sided filtering to improve the filtering effect. This filtering method cannot unclog the filter screen. When the mesh holes on the filter screen are blocked, it cannot filter, and the filtering effect will gradually deteriorate during long-term use. At the same time, the device cannot neutralize and coagulate and precipitate the waste water, and aluminum ions and oxides in the waste water from etched foils cannot be removed, and the treatment effect is not good; Therefore, it is urgent to design a waste water treatment device and method for the production of etched foils to solve the above problems. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a waste water treatment device and method for the production of etched foils, which solves the problems raised in the above background art.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A waste water treatment device for the production of etched foils includes a waste water treatment tank for storing and collecting the waste water from etched foils, and further includes: The filtering unit is arranged inside the wastewater treatment tank, and a wastewater inlet pipe for collecting wastewater is arranged between the filtering unit and the wastewater treatment tank. A filtering component and a dredging component are arranged inside the filtering unit. A filtering disk is arranged inside the filtering component, and a plurality of filtering holes for filtering large-volume impurities in the wastewater are formed in the filtering disk. A dredging rod for dredging the filtering holes is arranged inside the dredging component. The precipitation unit is used for collecting the wastewater filtered by the filtering unit, and includes a chemical adding component and a pressure filtering component. The chemical adding component is used for automatically injecting appropriate amounts of neutralizing agent and flocculating agent into the wastewater according to the content of the wastewater to achieve neutralization precipitation and flocculation precipitation of the wastewater. A water pressing disk is arranged inside the pressure filtering component, and the extrusion of the water pressing disk is used to press out the wastewater in the sediment.

[0006] Preferably, a servo motor is arranged inside the wastewater treatment tank, and a driving roller is arranged on the driving end of the servo motor. The opening and closing operations of the filtering unit and the precipitation unit are realized through the cooperation of the servo motor and the driving roller, so as to realize the automatic filtering and precipitation treatment of the wastewater.

[0007] Preferably, the filtering component includes a filtering box arranged inside the wastewater treatment tank, and the wastewater inlet pipe is located between the filtering box and the wastewater treatment tank. The filtering disk is fixedly installed inside the filtering box. The driving roller is rotatably connected to the filtering box, and stirring blades for stirring the wastewater are fixedly installed on the driving roller, and the stirring blades are located above the filtering disk inside the filtering box. A square impurity suction pipe for sucking impurities is fixedly communicated between the filtering box and the wastewater treatment tank, and the square impurity suction pipe is located above the filtering disk.

[0008] Preferably, the dredging component includes a reciprocating lead screw fixedly installed on the driving roller. A ball nut disk is installed in cooperation with the reciprocating lead screw, and a synchronous frame is fixedly installed on the ball nut disk. A lifting pressure disk is fixedly installed on the synchronous frame through two compression springs. The two compression springs are rotatably connected to the filtering box, and a plurality of dredging rods are fixedly installed on the lower part of the lifting pressure disk.

[0009] Preferably, the chemical adding component includes two medicine storage tanks fixedly installed inside the wastewater treatment tank. The two medicine storage tanks are respectively used for storing neutralizing agent and flocculating agent. Supplementary medicine pipes for supplementing medicine are fixedly communicated between the two medicine storage tanks and the wastewater treatment tank. Upper medicine pipes for injecting medicine are fixedly communicated between the two medicine storage tanks and the precipitation tank, and control metering valves for controlling the injection amount of medicine are arranged on the two upper medicine pipes.

[0010] Preferably, the pressure filtration assembly includes a sedimentation tank fixedly installed in the wastewater treatment tank, and a downward water pipe for guiding water is fixedly connected between the sedimentation tank and the filtration tank. A bearing water storage box for carrying wastewater is slidably installed in the sedimentation tank, and a control mechanism is installed between the bearing water storage box and the two medicine storage tanks. A water squeezing mechanism is installed in the bearing water storage box.

[0011] Preferably, the driving roller is rotatably connected to the wastewater treatment tank. A plurality of mixing and stirring wheels for stirring wastewater are fixedly installed on the driving roller, and all the plurality of mixing and stirring wheels are located above the bearing water storage box in the sedimentation tank.

[0012] Preferably, the control mechanism includes a scale induction rod fixedly installed on the side of the sedimentation tank. A trigger rod is fixedly installed on the bearing water storage box, and the trigger rod cooperates with the scale induction rod. The scale induction rod cooperates with the corresponding control metering valve to inject a corresponding amount of medicine into the sedimentation tank according to the trigger scale line on the scale induction rod.

[0013] Preferably, the water squeezing mechanism includes a linkage rod rotatably installed in the sedimentation tank. A one-way bearing is arranged on the driving roller, and the one-way bearing cooperates with the reverse rotation of the driving roller. A worm is fixedly installed on the one-way bearing, and a worm gear cooperating with the worm is fixedly installed on the linkage rod. A water pressing plate is slidably installed on the driving roller, and a lifting rack is fixedly installed on the lower part of the water pressing plate. An incomplete gear is fixedly installed on the linkage rod, and the incomplete gear meshes with the lifting rack. A reset elastic frame for resetting is fixedly installed between the lifting rack and the sedimentation tank; A sediment storage tank for storing sediment is formed in the bearing water storage box, and the lower part of the sediment storage tank cooperates with the water pressing plate. Two support spring rods are fixedly installed between the bearing water storage box and the sedimentation tank. A plurality of filter water grooves for squeezing out sewage are formed in the water pressing plate. A drain pipe for discharging sewage is fixedly installed on the water pressing plate. A sewage discharge pipe for discharging sediment is fixedly communicated with the sediment storage tank, and both the drain pipe and the sewage discharge pipe are elastic pipes.

[0014] A wastewater treatment method for the production of etched foils, which is used for the above-mentioned wastewater treatment device for the production of etched foils, includes the following steps: S1. Inject the wastewater generated during the production of etched foils into the filtration unit through the wastewater inlet pipe, and filter it through the filter holes in the filtration assembly to filter out large-volume impurities in the wastewater; S2. While filtering, control the reciprocating movement of the dredging rod through the dredging assembly to intermittently dredge the filter holes to prevent the filter holes from being blocked; S3. The filtered wastewater is injected into the precipitation unit. Appropriate neutralizing agents and flocculants are injected into the wastewater through the chemical dosing assembly according to the wastewater content for neutralization precipitation and flocculation precipitation of the wastewater. S4. After precipitation, the precipitates are reciprocally extruded by the filter press assembly to press out the wastewater in the precipitates, and the wastewater and the precipitates are discharged separately after the filter press is completed.

[0015] The present invention provides a wastewater treatment device and method for the production of etched foils. It has the following beneficial effects: 1. When the wastewater treatment device treats the etched foil wastewater, by adopting a filtering method in which multiple filter holes on the filter disk cooperate with each other, effective and thorough filtration of large-volume impurities in the wastewater can be achieved, and the filtration effect is better. The primary treatment of the wastewater can be achieved through filtration.

[0016] 2. When the wastewater treatment device treats the etched foil wastewater, through the cooperation of the reciprocating lead screw and the ball nut disk, the reciprocating lifting of the lifting pressure disk and multiple dredging rods below it can be realized. During the filtration process, the filter holes can be intermittently penetrated and dredged by the multiple dredging rods, effectively avoiding the blockage of the filter holes, and the filtration effect is better.

[0017] 3. When the wastewater treatment device treats the etched foil wastewater, after the wastewater filtration is completed, appropriate neutralizing agents and flocculants can be automatically injected into the wastewater according to the wastewater content, so as to effectively neutralize the acid and alkali of the wastewater and perform flocculation precipitation, and then the neutralization of the wastewater can be realized. At the same time, the aluminum ions and oxides attached to the wastewater are flocculated and precipitated, and the purification effect is better, realizing the secondary treatment of the wastewater.

[0018] 4. When the wastewater treatment device treats the etched foil wastewater, after precipitation is completed, by reciprocally extruding the pressure water disk and combining with the water supply of the filter water tank, the precipitates can be reciprocally extruded, so that the wastewater attached to the precipitates after precipitation can be completely pressed out, realizing the complete separation of the wastewater and the precipitates, and realizing the tertiary treatment of the wastewater.

[0019] In summary, the present invention can purify the wastewater more thoroughly by adopting multiple treatment methods such as filter disk filtration, neutralization precipitation, flocculation precipitation and precipitate extrusion. During the treatment, intermittent dredging of the filter holes can be realized, effectively avoiding the blockage of the filter holes. After precipitation, the wastewater in the precipitates can be completely pressed out by the reciprocating extrusion method, realizing the complete separation of the precipitates and the wastewater, and the purification effect of the wastewater is better.

[0020] Other features and advantages of the present invention will be described in the following specification, and in part will become apparent from the specification or be learned by practicing the present invention. The objectives and other advantages of the present invention can be achieved and obtained by the structure specifically pointed out in the written specification and the drawings. Brief Description of the Drawings

[0021] The following further elaborates on the specific embodiments of the present invention in conjunction with the drawings, where: Figure 1 is a schematic structural diagram of a wastewater treatment for the production of etched foils proposed by the present invention; Figure 2 is Figure 1 a schematic internal structure diagram of the wastewater treatment tank in ; Figure 3 is Figure 2 a front view of ; Figure 4 is Figure 2 a schematic structural diagram after removing the wastewater treatment tank; Figure 5 is Figure 4 a schematic structural diagram of the filtering unit in ; Figure 6 is Figure 5 a schematic internal structure diagram of the filtering box in ; Figure 7 is Figure 6 a front view of ; Figure 8 is Figure 6 a schematic structural diagram after removing the filtering box; Figure 9 is Figure 8 a schematic exploded view of ; Figure 10 is Figure 4 a schematic structural diagram of the precipitation unit in ; Figure 11 is Figure 10 a schematic internal structure diagram of the precipitation box in ; Figure 12 is Figure 11 a magnified structural diagram of part A in ; Figure 13 is Figure 11 a magnified structural diagram of the servo motor and the water storage box carrier in ; Figure 14 is Figure 13 a schematic internal structure diagram of the water storage box carrier in ; Figure 15 is Figure 14 a schematic structural diagram after removing the water storage box carrier.

[0022] In the figure: 1 wastewater treatment tank, 2 wastewater inlet pipe, 3 medicine supplement pipe, 4 drain pipe, 5 sewage discharge pipe, 6 filter box, 7 sedimentation tank, 8 medicine storage tank, 9 impurity suction square pipe, 10 servo motor, 11 driving roller, 12 downward water square pipe, 13 synchronization frame, 14 reciprocating lead screw, 15 extrusion spring, 16 lifting pressure plate, 17 filter disc, 18 stirring blade, 19 dredging rod, 20 filter hole, 21 ball nut disc, 22 scale induction rod, 23 water storage box for bearing, 24 supporting spring rod, 25 medicine feeding pipe, 26 mixing and stirring wheel, 27 sedimentation storage tank, 28 triggering benchmark, 29 water pressing plate, 30 linkage rod, 31 one-way bearing, 32 filter water groove, 33 worm, 34 worm gear, 35 incomplete gear, 36 lifting rack, 37 reset elastic frame. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0024] Embodiment 1: Refer to Figures 1 - 4 , a wastewater treatment device for the production of etched foils, including a wastewater treatment tank 1 for storing and collecting etched foil wastewater, and realizing purification treatments such as filtration, neutralization, and coagulation precipitation of the wastewater through the wastewater treatment tank 1.

[0025] This wastewater treatment device further includes: A filtering unit is arranged in the wastewater treatment tank 1, and a wastewater inlet pipe 2 for collecting wastewater is arranged between the filtering unit and the wastewater treatment tank 1. The wastewater is injected into the wastewater treatment tank 1 through the wastewater inlet pipe 2, and the wastewater is filtered by the filtering unit to filter out large-volume impurities in the wastewater, realizing the primary treatment of the wastewater.

[0026] A sedimentation unit is used to collect the wastewater filtered by the filtering unit. After the wastewater is filtered, it is injected into the sedimentation unit, and an appropriate amount of neutralizer and flocculant can be injected into the wastewater according to the content of the wastewater to perform neutralization sedimentation and coagulation sedimentation on the wastewater, realizing the secondary treatment of the wastewater; And after the wastewater is sedimented, the sediment is pressurized to completely press out the wastewater in the wastewater sediment, realizing the tertiary treatment of the wastewater.

[0027] A servo motor 10 is arranged in the wastewater treatment tank 1, and a driving roller 11 is arranged on the driving end of the servo motor 10. Through the cooperation of the servo motor 10 and the driving roller 11, the opening and closing operations of the filtering unit and the sedimentation unit are realized, realizing the automatic filtering and sedimentation treatment of the wastewater; The servo motor 10 can control the rotation speed and rotation direction of the driving roller 11 to adapt to the filtering and sedimentation treatment process of the wastewater.

[0028] Example Two: Refer to Figures 2 - 9 In this embodiment, the different technical solution compared with Embodiment One is that a filtering component and a dredging component are arranged in the filtering unit. A filtering disk 17 is arranged in the filtering component, and a plurality of filtering holes 20 for filtering large-volume impurities in the wastewater are formed in the filtering disk 17. The filtering component includes a filtering box 6 arranged in the wastewater treatment tank 1. The wastewater inlet pipe 2 is located between the filtering box 6 and the wastewater treatment tank 1. The filtering disk 17 is fixedly installed in the filtering box 6, and the driving roller 11 is rotatably connected to the filtering box 6. The to-be-treated etched foil wastewater is injected into the filtering box 6 through the wastewater inlet pipe 2 and will contact the filtering disk 17 in the filtering box 6. At this time, the filtering holes 20 on the filtering disk 17 will filter the wastewater, so that the impurities with larger volume in the wastewater cannot pass through the filtering holes 20 and accumulate on the upper part of the filtering disk 17, while the impurities with smaller volume will continue to fall through the filtering holes 20 together with the wastewater.

[0029] A stirring blade 18 for stirring the wastewater is fixedly installed on the driving roller 11, and the stirring blade 18 is located above the filtering disk 17 in the filtering box 6. When the servo motor 10 is started to drive the driving roller 11 to rotate forward, the stirring blade 18 will rotate when the driving roller 11 rotates forward. When the stirring blade 18 rotates, it will stir the wastewater in the filtering box 6, so as to accelerate the flow rate of the wastewater, and at the same time disperse the wastewater in the filtering box 6, making the wastewater easier to pass through different filtering holes 20 for filtering, rather than filtering in a single area, improving the filtering efficiency and reducing the blockage situation.

[0030] A square impurity suction pipe 9 for sucking impurities is fixedly connected between the filtering box 6 and the wastewater treatment tank 1, and the square impurity suction pipe 9 is located above the filtering disk 17. The square impurity suction pipe 9 is matched with an external adsorption pump. After the wastewater is filtered, the large-volume impurities will accumulate on the upper part of the filtering disk 17. At this time, the external adsorption pump can be started, and the impurities accumulated on the upper part of the filtering disk 17 are sucked through the adsorption pump and the square impurity suction pipe 9, and the adsorption treatment of the impurities can be completed, and the primary treatment of the wastewater can be completed.

[0031] In a further embodiment, a dredging rod 19 for dredging the filtering holes 20 is arranged in the dredging component. The dredging component includes a reciprocating lead screw 14 fixedly installed on the driving roller 11. A ball nut disk 21 is fitted on the reciprocating lead screw 14. A synchronous frame 13 is fixedly installed on the ball nut disk 21. A lifting pressure disk 16 is fixedly installed on the synchronous frame 13 through two compression springs 15. Both of the two compression springs 15 are rotatably connected to the filtering box 6, and a plurality of dredging rods 19 are fixedly installed on the lower part of the lifting pressure disk 16. When the driving roller 11 rotates forward, it will drive the reciprocating lead screw 14 thereon to rotate. When the reciprocating lead screw 14 rotates, it will drive the ball nut disc 21 that cooperates with it thereon, so that the ball nut disc 21 reciprocates up and down on the reciprocating lead screw 14, and then can drive the synchronous frame 13 to reciprocate up and down. When the synchronous frame 13 reciprocates up and down, it will drive the lifting pressure plate 16 to reciprocate up and down through two compression springs 15; When the lifting pressure plate 16 moves downward, it can not only squeeze the wastewater in the lower filter tank 6 below it, accelerate the speed of the wastewater passing through the filter holes 20, and improve the efficiency of wastewater filtration, but also drive the dredging rod 19 to move downward when moving downward, and insert the dredging rod 19 into the filter holes 20 at corresponding positions on the filter disc 17, so as to penetrate and dredge the filter holes 20 and prevent the filter holes 20 from being blocked; By reciprocating the lifting and lowering of the lifting pressure plate 16, the reciprocating lifting of the dredging rod 19 can be realized. During the process of wastewater filtration, the filter holes 20 can be intermittently penetrated and dredged, so that the filter holes 20 will not be blocked, thereby effectively improving the filtration effect of wastewater and prolonging the service life of the filter disc 17.

[0032] The cooperation between the reciprocating lead screw 14 and the ball nut disc 21 is a prior art and will not be elaborated here; Its specific working principle is as follows: The reciprocating lead screw 14 is a form of solid cam pair. Its manifestation is two spiral grooves with the same pitch and opposite helix directions. The two ends of the lead screw are connected by transition curves. The balls in the ball nut disc 21 are placed inside the spiral grooves. Through the rotation of the lead screw, the inner groove side of the spiral groove pushes the balls inside it to make an axial reciprocating motion, thereby driving the ball nut disc 21 to make a reciprocating movement. That is, when the reciprocating lead screw 14 rotates in one direction, it can drive the ball nut disc 21 to make a reciprocating linear movement on the reciprocating lead screw 14.

[0033] Example Three: Refer to Figures 1 - 4 And 10 - Figure 15 In this embodiment, the difference technical solution compared with Embodiment Two is that the precipitation unit includes a chemical addition component and a pressure filtration component. The chemical addition component is used to automatically inject an appropriate amount of neutralizing agent and flocculating agent into the wastewater according to the content of the wastewater to achieve the neutralization precipitation and flocculation precipitation of the wastewater; The pressure filtration component includes a sedimentation tank 7 fixedly installed in the wastewater treatment tank 1, and a downward water pipe 12 for guiding water is fixedly connected between the sedimentation tank 7 and the filter tank 6. The wastewater after filtration in the filter tank 6 will be introduced into the sedimentation tank 7 through the downward water pipe 12 to complete the conduction of the wastewater.

[0034] A carrying water storage box 23 for carrying waste water is slidably installed in a precipitation tank 7. Two support spring rods 24 are fixedly installed between the carrying water storage box 23 and the precipitation tank 7. After the waste water enters the precipitation tank 7, it will accumulate on the carrying water storage box 23. As the content of the waste water gradually increases, the waste water will gradually press down the carrying water storage box 23 to move downward in the precipitation tank 7, and at the same time, it will squeeze the support spring rods 24 below it to compress them.

[0035] The chemical dosing assembly includes two chemical storage tanks 8 fixedly installed in the waste water treatment tank 1. The two chemical storage tanks 8 are respectively used to store a neutralizing agent and a flocculating agent. Supplementary chemical pipes 3 for replenishing chemicals are fixedly connected between the two chemical storage tanks 8 and the waste water treatment tank 1. Upper chemical pipes 25 for injecting chemicals are fixedly connected between the two chemical storage tanks 8 and the precipitation tank 7. Control metering valves for controlling the chemical injection amount are provided on the two upper chemical pipes 25. Control mechanisms are installed between the carrying water storage box 23 and the two chemical storage tanks 8. The control mechanism includes a scale induction rod 22 fixedly installed on the side of the precipitation tank 7. A trigger benchmark 28 is fixedly installed on the carrying water storage box 23, and the trigger benchmark 28 cooperates with the scale induction rod 22. The scale induction rod 22 cooperates with the corresponding control metering valve to inject a corresponding amount of chemical into the precipitation tank 7 according to the trigger scale line on the scale induction rod 22. When the carrying water storage box 23 moves downward, it will drive the trigger benchmark 28 thereon to move downward. When the injection of waste water is completed, the carrying water storage box 23 drives the trigger benchmark 28 to move downward to the maximum position. At this time, the scale induction rod 22 will cooperate with the trigger benchmark 28 to start, record the scale data, and at the same time transmit the scale data to the corresponding control metering valve. The control metering valve will open, so that the neutralizing agent or flocculating agent in the chemical storage tank 8 is injected into the precipitation tank 7 through the upper chemical pipe 25. At the same time of injection, the chemical injection amount is accurately controlled by the control metering valve, so that the chemical injection amount is the same as the scale data of the scale induction rod 22, and the quantitative injection of the chemical can be completed, avoiding the situation of over-injection or under-injection, and the precipitation treatment effect is better.

[0036] The neutralizing agent includes an alkaline substance (sodium hydroxide) and an acidic substance (such as sulfuric acid). The appropriate neutralizing agent can be flexibly selected according to the actual pH value of the waste water to neutralize the waste water, and at the same time produce white flocculent aluminum hydroxide precipitate to reduce the corrosion hazard of the waste water. The flocculating agent can be calcium hydroxide or aluminum hydroxide, etc., which is used to combine with oxides or aluminum ions in the corroded foil waste water to form precipitates, complete flocculation precipitation, and achieve efficient precipitation purification treatment of macromolecular organic matter and heavy metals.

[0037] In a further embodiment, a water pressing plate 29 is arranged inside the filter press assembly. By squeezing with the water pressing plate 29, the wastewater in the sediment is pressed out. The driving roller 11 is rotatably connected to the wastewater treatment tank 1. A plurality of mixing and stirring wheels 26 for stirring the wastewater are fixedly installed on the driving roller 11, and the plurality of mixing and stirring wheels 26 are all located above the water storage box 23 carried in the sedimentation tank 7; After the neutralizing agent and the flocculating agent are injected, when the driving roller 11 drives the mixing and stirring wheels 26 to rotate forward, the wastewater and the agent in the sedimentation tank 7 will be mixed and stirred, so that the wastewater and the agent can be fully mixed, effectively improving the efficiency of wastewater neutralization and flocculation precipitation, and completing the secondary treatment of wastewater; A sediment storage tank 27 for storing sediment is arranged in the water storage box 23 carried. The sediment generated during neutralization and flocculation will gradually accumulate in the sediment storage tank 27 in the water storage box 23 carried, completing the accumulation and collection of the sediment.

[0038] In a further embodiment, a water squeezing mechanism is installed in the water storage box 23 carried. The water squeezing mechanism includes a linkage rod 30 rotatably installed in the sedimentation tank 7. A one-way bearing 31 is arranged on the driving roller 11, and the one-way bearing 31 cooperates with the reverse rotation of the driving roller 11. A worm 33 is fixedly installed on the one-way bearing 31, and a worm gear 34 cooperating with the worm 33 is fixedly installed on the linkage rod 30; After sedimentation for a period of time, when the wastewater in the sedimentation tank 7 shows clear and turbid separation, it means that the sedimentation is completed. At this time, the servo motor 10 can be started to drive the driving roller 11 to rotate reversely. When the driving roller 11 rotates reversely, it will drive the one-way bearing 31 to rotate in the reverse direction, and then drive the worm 33 to rotate. When the worm 33 rotates, it will drive the worm gear 34 cooperating with it to rotate. When the worm gear 34 rotates, it will drive the linkage rod 30 thereon to rotate together.

[0039] A water pressing plate 29 is slidably installed on the driving roller 11, and a lifting rack 36 is fixedly installed at the lower part of the water pressing plate 29. An incomplete gear 35 is fixedly installed on the linkage rod 30, and the incomplete gear 35 meshes with the lifting rack 36. A reset elastic frame 37 for resetting is fixedly installed between the lifting rack 36 and the sedimentation tank 7; When the linkage rod 30 rotates, it will drive the incomplete gear 35 thereon to rotate. When the incomplete gear 35 rotates to mesh with the lifting rack 36, it will pull the lifting rack 36 to move downward, and then pull the water pressing plate 29 to move downward in the sediment storage tank 27. While moving downward, the reset elastic frame 37 is compressed. When the incomplete gear 35 does not mesh with the lifting rack 36, at this time, the reset elastic frame 37 automatically extends and resets to push the lifting rack 36 and the water pressing plate 29 to move upward and reset. When the incomplete gear 35 keeps rotating, the above steps will be repeated to realize the reciprocating up and down movement of the water pressing plate 29.

[0040] The lower part of the precipitation storage tank 27 is matched with the water pressing plate 29. A plurality of filter water grooves 32 for extruding sewage are formed on the water pressing plate 29. When the water pressing plate 29 moves downward, it will efficiently extrude the sediment in the precipitation storage tank 27, extrude the wastewater in the sediment, and make the wastewater flow back to the upper part of the water pressing plate 29 through the filter water grooves 32 on the water pressing plate 29; A drain pipe 4 for discharging sewage is fixedly installed on the water pressing plate 29. The wastewater in the upper part of the water pressing plate 29 will be directly discharged through the drain pipe 4. That is, when the water pressing plate 29 extrudes the sediment, the wastewater in the sediment is pressed out and will flow back to the upper part of the water pressing plate 29 through the filter water grooves 32 and will be directly discharged through the drain pipe 4, so as to complete the thorough pressing out of the wastewater in the sediment and complete the three-stage treatment of the wastewater.

[0041] A sewage discharge pipe 5 for discharging sediment is fixedly communicated with the precipitation storage tank 27. After the sediment is pressed by water, the sewage discharge pipe 5 can be opened to discharge the sediment from the wastewater treatment tank 1; Both the drain pipe 4 and the sewage discharge pipe 5 are elastic pipes, which can adapt to the lifting movement of the water pressing plate 29 and the bearing water storage box 23, so that the two will not damage the drain pipe 4 and the sewage discharge pipe 5 during the lifting movement.

[0042] The specific working principle of this wastewater treatment device is as follows: The corrosion foil wastewater to be treated is injected into the filter box 6 through the wastewater inlet pipe 2. At this time, the filter holes 20 on the filter disk 17 will filter the wastewater, so that the impurities with larger volume in the wastewater cannot pass through the filter holes 20 and accumulate on the upper part of the filter disk 17, while the impurities with smaller volume will continue to fall with the wastewater through the filter holes 20; During the wastewater filtration process, start the servo motor 10 to drive the driving roller 11 to rotate forward. When the driving roller 11 rotates forward, it will drive the reciprocating lead screw 14 on it to rotate. When the reciprocating lead screw 14 rotates, it will drive the ball nut disk 21 matched with it on it, so that the ball nut disk 21 reciprocates up and down on the reciprocating lead screw 14, and then drives the synchronous frame 13 to reciprocate up and down. When the synchronous frame 13 reciprocates up and down, it will drive the lifting pressure plate 16 to reciprocate up and down through the two compression springs 15; When the lifting pressure plate 16 moves downward, it can not only extrude the wastewater in the lower part of the filter box 6 below it, accelerate the speed of the wastewater passing through the filter holes 20, improve the efficiency of wastewater filtration, but also drive the dredging rod 19 to move downward when moving downward, and insert the dredging rod 19 into the filter holes 20 at the corresponding positions on the filter disk 17, so as to penetrate and dredge the filter holes 20 and avoid the blockage of the filter holes 20, completing the primary treatment of the wastewater; The wastewater after filtration in the filtration tank 6 will be introduced into the sedimentation tank 7 through the downward drain pipe 12, and at the same time, it will accumulate on the bearing water storage box 23. As the content of the wastewater gradually increases, the wastewater will gradually press the bearing water storage box 23 to move downward in the sedimentation tank 7. When the bearing water storage box 23 moves downward, the downward displacement amount is recorded by the control mechanism. After the wastewater injection is completed, the control metering valve is opened to enable the neutralizing agent or flocculant in the chemical storage tank 8 to be injected into the sedimentation tank 7 through the chemical feeding pipe 25. And at the same time of injection, the injection amount of the chemical agent is precisely controlled through the control metering valve, so that the injection amount of the chemical agent is the same as the scale data of the scale induction rod 22, and the quantitative injection of the chemical agent can be completed, avoiding the situation of excessive or insufficient amount.

[0043] After the neutralizing agent and the flocculating agent are injected, the driving roller 11 drives the mixing and stirring wheel 26 to rotate forward, which will mix and stir the wastewater and the chemical agent in the sedimentation tank 7, so that the wastewater and the chemical agent can be fully mixed. The precipitates generated during neutralization and flocculation will gradually accumulate in the sedimentation storage tank 27 in the bearing water storage box 23, completing the accumulation and collection of the sediment, and completing the secondary treatment of the wastewater. After sedimentation for a period of time, when the wastewater in the sedimentation tank 7 shows clear and turbid separation, it means that the sedimentation is completed. At this time, the servo motor 10 can be started to drive the driving roller 11 to reverse, and the reciprocating lifting movement of the water pressing plate 29 is realized through the cooperation of the water squeezing mechanism. When the water pressing plate 29 moves downward, it will efficiently squeeze the sediment in the sedimentation storage tank 27, so that the wastewater in the sediment can be squeezed out, and the wastewater will flow back to the upper part of the water pressing plate 29 through the water filtering groove 32 on the water pressing plate 29. That is, when the water pressing plate 29 squeezes the sediment, the wastewater in the sediment will be pressed out and flow back to the upper part of the water pressing plate 29 through the water filtering groove 32, and will be directly discharged through the drain pipe 4, so that the wastewater in the sediment can be completely pressed out, completing the tertiary treatment of the wastewater. After the sediment is pressed for water, the sewage discharge pipe 5 can be opened to discharge the sediment from the wastewater treatment tank 1.

[0044] The embodiment of the present invention also provides a wastewater treatment method for the production of etched foils. The above-mentioned wastewater treatment device for the production of etched foils includes the following steps: S1. The wastewater generated during the production of etched foils is injected into the filtration unit through the wastewater inlet pipe 2, and is filtered through the filtration holes 20 in the filtration component to filter out the large-volume impurities in the wastewater. S2. While filtering, the control rod 19 is controlled by the dredging component to move reciprocally to intermittently dredge the filtration holes 20 to prevent the filtration holes 20 from being blocked. S3. The filtered wastewater is injected into the sedimentation unit, and an appropriate amount of neutralizing agent and flocculant are injected into the wastewater according to the wastewater content through the chemical adding component for neutralization sedimentation and flocculation sedimentation of the wastewater. S4. After precipitation, the precipitate is reciprocally extruded by a pressure filtration component to press out the wastewater in the precipitate, and after the pressure filtration is completed, the wastewater and the precipitate are discharged separately.

[0045] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A wastewater treatment device for foil corrosion production, comprising a wastewater treatment tank (1) for storing and collecting foil corrosion wastewater, characterized in that: Also includes: A filter unit is arranged in a wastewater treatment tank (1), and a wastewater inlet pipe (2) for collecting wastewater is arranged between the filter unit and the wastewater treatment tank (1), a filter assembly and a dredging assembly are arranged in the filter unit, a filter disc (17) is arranged in the filter assembly, and a plurality of filter holes (20) are provided on the filter disc (17) for filtering large-volume impurities in the wastewater, and a dredging rod (19) is arranged in the dredging assembly for dredging the filter holes (20); The sedimentation unit is used to collect wastewater filtered by the filtering unit, and comprises a dosing component and a filter press component. The dosing component is used to automatically inject an appropriate amount of neutralizing agent and flocculant into the wastewater according to the content of the wastewater, so as to achieve neutralization sedimentation and flocculant sedimentation of the wastewater. The filter press component is provided with a water pressing plate (29), and the wastewater in the sediment is squeezed out by squeezing the water pressing plate (29).

2. A wastewater treatment device for corrosion foil production according to claim 1, characterized in that: The wastewater treatment tank (1) is provided with a servo motor (10), and a driving roller (11) is provided on the driving end of the servo motor (10). The servo motor (10) and the driving roller (11) cooperate to realize the opening and closing operation of the filtering unit and the sedimentation unit, thereby realizing automatic filtering and sedimentation treatment of the wastewater.

3. A wastewater treatment device for corrosion foil production according to claim 2, characterized in that: The filter assembly comprises a filter box (6) arranged in a wastewater treatment tank (1), the wastewater inlet pipe (2) is located between the filter box (6) and the wastewater treatment tank (1), and the filter disc (17) is fixedly installed in the filter box (6), the drive roller (11) and the filter box (6) are rotatably connected, and a stirring blade (18) for stirring the wastewater is fixedly installed on the drive roller (11), and the stirring blade (18) is located above the filter disc (17) in the filter box (6); A square impurity suction pipe (9) for sucking out impurities is fixedly connected between the filter box (6) and the wastewater treatment tank (1), and the square impurity suction pipe (9) is located on the upper part of the filter disc (17).

4. A wastewater treatment device for corrosion foil production according to claim 3, characterized in that: The dredging assembly comprises a reciprocating screw (14) fixedly mounted on a driving roller (11), a ball nut plate (21) being mounted on the reciprocating screw (14), a synchronous frame (13) being fixedly mounted on the ball nut plate (21), a lifting and lowering pressure plate (16) being fixedly mounted on the synchronous frame (13) via two extrusion springs (15), the two extrusion springs (15) being rotationally connected to the filter box (6), and a plurality of dredging rods (19) being fixedly mounted on the lower part of the lifting and lowering pressure plate (16).

5. A wastewater treatment device for corrosion foil production according to claim 3, characterized in that: The dosing assembly comprises two medicine storage boxes (8) fixedly installed in the wastewater treatment tank (1), and the two medicine storage boxes (8) are used to store a neutralizing agent and a flocculant respectively, and a medicine replenishing pipe (3) for replenishing medicine is fixedly connected between the two medicine storage boxes (8) and the wastewater treatment tank (1), and a medicine supply pipe (25) for injecting medicine is fixedly connected between the two medicine storage boxes (8) and the sedimentation tank (7), and a control metering valve for controlling the injection amount is arranged on the two medicine supply pipes (25).

6. A wastewater treatment device for corrosion foil production according to claim 5, characterized in that: The filter press assembly comprises a sedimentation box (7) fixedly mounted in a wastewater treatment tank (1), and a square water discharge pipe (12) for guiding water is fixedly connected between the sedimentation box (7) and the filter box (6), a carrying water storage box (23) for carrying wastewater is slidably mounted in the sedimentation box (7), a control mechanism is mounted between the carrying water storage box (23) and two medicine storage boxes (8), and a water squeezing mechanism is mounted in the carrying water storage box (23).

7. A wastewater treatment device for corrosion foil production according to claim 6, characterized in that: The driving roller (11) is rotatably connected to the wastewater treatment tank (1), and a plurality of mixing wheels (26) for stirring the wastewater are fixedly mounted on the driving roller (11), and the plurality of mixing wheels (26) are all located on the upper portion of the water storage box (23) in the sedimentation tank (7).

8. A wastewater treatment device for corrosion foil production according to claim 7, characterized in that: The control mechanism comprises a scale sensing rod (22) fixedly mounted on the side of the sedimentation tank (7); a triggering rod (28) is fixedly mounted on the supporting water storage box (23); the triggering rod (28) cooperates with the scale sensing rod (22); the scale sensing rod (22) cooperates with a corresponding control metering valve, and is used to inject a corresponding amount of medicine into the sedimentation tank (7) according to the triggering scale line on the scale sensing rod (22).

9. A wastewater treatment device for corrosion foil production according to claim 6, characterized in that: The water squeezing mechanism comprises a linkage rod (30) rotatably mounted in a sedimentation box (7); a one-way bearing (31) is provided on the driving roller (11), and the one-way bearing (31) cooperates with the reverse rotation of the driving roller (11); a worm (33) is fixedly mounted on the one-way bearing (31), and a worm wheel (34) cooperating with the worm (33) is fixedly mounted on the linkage rod (30); a water pressing plate (29) is slidably mounted on the driving roller (11), and a lifting gear rod (36) is fixedly mounted at the lower part of the water pressing plate (29); an incomplete gear (35) is fixedly mounted on the linkage rod (30), and the incomplete gear (35) is meshed with the lifting gear rod (36); and a resetting elastic frame (37) for resetting is fixedly mounted between the lifting gear rod (36) and the sedimentation box (7); A sedimentation tank (27) for storing sediment is provided in the supporting water storage box (23), and the lower part of the sedimentation tank (27) cooperates with a water pressure plate (29). Two supporting spring rods (24) are fixedly installed between the supporting water storage box (23) and the sedimentation tank (7). A plurality of filter grooves (32) for squeezing out sewage are provided on the water pressure plate (29). A drainage pipe (4) for discharging sewage is fixedly installed on the water pressure plate (29). A sewage discharge pipe (5) for discharging sediment is fixedly connected to the sedimentation tank (27), and both the drainage pipe (4) and the sewage discharge pipe (5) are elastic pipes.

10. A method for treating wastewater used in the production of corroded foil, used in the wastewater treatment device used in the production of corroded foil as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, injecting wastewater generated during the production of corrosion foil into the filter unit through the wastewater inlet pipe (2), and filtering the wastewater through the filter holes (20) in the filter assembly to remove large-volume impurities in the wastewater; S2, while filtering, the dredging rod (19) is controlled to move back and forth by the dredging component to intermittently dredge the filter holes (20) to prevent the filter holes (20) from being blocked; S3, the filtered wastewater is injected into the sedimentation unit, and an appropriate amount of neutralizer and flocculant is injected into the wastewater through the dosing component according to the content of the wastewater to perform neutralization and flocculation precipitation of the wastewater; S4. After sedimentation, the sediment is reciprocally squeezed through the filter press assembly to remove the wastewater in the sediment, and the wastewater and the sediment are discharged separately after the filter press is completed.

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