Nickel-containing wastewater treatment device

Abstract

The application relates to the field of wastewater treatment and discloses a nickel-containing wastewater treatment device, which comprises a shell, a reaction chamber arranged in the shell and a filter chamber capable of communicating with the reaction chamber, a water inlet pipe for feeding wastewater into the reaction chamber and a feeding hole communicated with the reaction chamber and arranged on the shell, a feeding cylinder for accommodating a reaction agent arranged in the feeding hole, a side wall of the feeding cylinder being provided with a discharging hole, the discharging hole being capable of moving between a first position and a second position along the length direction of the feeding cylinder, when the discharging hole is located in the feeding hole in the first position, the inner wall of the feeding hole seals the discharging hole, and when the discharging hole is communicated with the reaction chamber in the second position. Through the technical scheme, the structure for adding the reaction agent is simple and convenient to operate, and the reaction gas generated by the reaction can be prevented from polluting the reaction agent, so that the reaction agent can be better protected.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and more specifically to a nickel-containing wastewater treatment device. Background Technology

[0002] Nickel is a hard, ductile, and ferromagnetic metal. Nickel plating is widely used in electroplating production due to its excellent wear resistance, corrosion resistance, and solderability. However, the nickel plating process generates a large amount of nickel-containing wastewater. Given the high toxicity of nickel, this wastewater must be treated before discharge to meet wastewater or surface water standards. Chemical precipitation is a widely used method for nickel removal. This involves adding water-soluble sulfides or alkaline substances to the nickel-containing wastewater to form insoluble precipitates. The metal sludge and treated wastewater are then filtered out using solid-liquid separation.

[0003] However, existing automatic feeding devices are complex in structure and expensive, making them unsuitable for widespread use in wastewater with defined impurity composition, especially in the treatment of nickel-containing wastewater from the lithium battery industry. Other feeding devices have simpler structures, but the gas generated during the reaction process can contaminate the reactants through the inlet, and they cannot immediately and effectively mix the additives uniformly with the wastewater to improve the reaction rate and efficiency.

[0004] In addition, after the reaction is complete, the metal sludge produced during the solid-liquid separation process can easily accumulate on the surface of the filter screen, clogging the filter holes, resulting in reduced filtration efficiency, and the cleaning process is complicated, affecting the secondary use of the filter screen. Summary of the Invention

[0005] The purpose of this invention is to provide a nickel-containing wastewater treatment device to solve the problem that the gas generated during wastewater reaction can easily contaminate unused reactants.

[0006] To achieve the above objectives, the present invention provides a nickel-containing wastewater treatment device, comprising a housing, a reaction chamber and a filter chamber communicating with the reaction chamber, an inlet pipe for introducing wastewater into the reaction chamber and a feed hole communicating with the reaction chamber, the feed hole for accommodating a feed cylinder containing a reactant, and an outlet hole provided on the side wall of the feed cylinder, the outlet hole being movable between a first position and a second position along the length direction of the feed cylinder; in the first position, the outlet hole is located in the feed hole and the inner wall of the feed hole is sealed thereto; in the second position, the outlet hole communicates with the reaction chamber.

[0007] In some embodiments, an elastic element is also included between the housing and the feed cylinder, the elastic element being capable of driving the feed cylinder from the second position to the first position.

[0008] In some embodiments, a connecting plate is also included, which is connected to the feed cylinder and extends into the reaction chamber. The connecting plate has a linkage section that can receive and overflow liquid flowing out of the water inlet pipe. The elastic element is installed between the receiving surface of the linkage section and the inner wall of the housing.

[0009] In some embodiments, a sealing gasket for sealing the discharge port is provided on the inner wall of the feed port; and / or, a stirring assembly is provided in the reaction chamber.

[0010] In some embodiments, the filter chamber is provided with a filter screen and a scraper assembly, the filter screen being formed in a downwardly concave shape, and the scraper assembly including a scraper disposed at the bottom of the filter screen and a drive member for driving the scraper to move.

[0011] In some embodiments, the bottom of the filter screen is provided with a sludge discharge port, the sludge discharge port is provided with a movable sealing plate, and the wastewater treatment device is provided with a sludge discharge pipe that can be connected to the sludge discharge port and a storage chamber connected to the sludge discharge pipe.

[0012] In some embodiments, the housing is provided with a transition chamber communicating with the bottom of the filter screen, the transition chamber being located on the side of the sludge discharge pipe, and the transition chamber and the sludge discharge pipe being connected through filter holes.

[0013] In some embodiments, the housing is provided with a water outlet chamber that can communicate with the transition chamber, and the water outlet chamber is provided with a water outlet pipe that communicates with the outside.

[0014] In some embodiments, the reaction chamber, the filtration chamber, the transition chamber, and the effluent chamber are arranged sequentially from top to bottom, and the storage chamber is located on both sides of the effluent chamber.

[0015] In some embodiments, the housing is provided with a drain outlet communicating with the storage chamber.

[0016] The above technical solution provides a simple structure for adding reactants, is easy to operate, and avoids contamination of the reactants by gases generated during the reaction, thus better protecting the reactants. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the nickel-containing wastewater treatment device described in the embodiment of this scheme; Figure 2 yes Figure 1 Enlarged view of section A; Figure 3 This is a perspective view of a portion of the structure of the nickel-containing wastewater treatment device described in this embodiment. Figure 4This is another structure of the sealing plate described in the implementation of this solution.

[0018] Explanation of reference numerals in the attached figures 1-Shell, 2-Reaction chamber, 3-Filter chamber, 4-Outlet chamber, 5-First valve, 6-Second valve, 7-Outlet pipe, 8-Inlet pipe, 9-Feeding hole, 10-Feeding cylinder, 11-Outlet hole, 12-Sealing gasket, 13-Elastic component, 14-Connecting plate, 15-Support plate, 16-Filter screen, 17-Guide rail, 18-Drive component, 19-Sliding sleeve, 20-Scraper, 21-Brush, 22-Limiting component, 23-Sludge discharge port, 24-Sludge discharge pipe, 25-Filter hole, 26-Storage chamber, 27-Transition chamber, 28-Sealing plate, 29-Drainage port, 30-Agitator assembly, 301-Motor, 302-Rotating shaft, 303-Fan blade. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] refer to Figures 1-4 As shown, this solution provides a nickel-containing wastewater treatment device, which includes a housing 1, a reaction chamber 2 and a filter chamber 3 that can communicate with the reaction chamber 2, an inlet pipe 8 for introducing wastewater into the reaction chamber 2 and a feed hole 9 communicating with the reaction chamber 2, the feed hole 9 for accommodating a feed cylinder 10 containing reactants, the side wall of the feed cylinder 10 is provided with a discharge hole 11, the discharge hole 11 can move along the length direction of the feed cylinder 10 between a first position and a second position. In the first position, the discharge hole 11 is located in the feed hole 9 and the inner wall of the feed hole 9 is sealed to it. In the second position, the discharge hole 11 communicates with the reaction chamber 2.

[0021] The wastewater treatment device can be used to treat wastewater, such as nickel-containing wastewater. The reaction chamber 2 allows the wastewater to react with the reactant to perform preliminary treatment of the wastewater. The filtration chamber 3 can filter the wastewater after the reaction treatment to achieve solid-liquid separation, so as to treat the solid products and the wastewater after the reaction separately.

[0022] The shell 1 is provided with a water inlet pipe 8, which is connected to the reaction chamber 2 to inject wastewater to be treated. In addition, a feed hole 9 is formed on the wall of the shell 1, which is connected to the reaction chamber 2. The feed cylinder 10 is disposed in the feed hole 9 and can move therein.

[0023] The feed cylinder 10 has an open end and a closed end at its two ends, respectively. The reactant can be injected into it through the open end, and its closed end is inserted into the feed hole 9. The discharge hole 11 is located near the closed end.

[0024] When the feed cylinder 10 moves to the position of the discharge port 11 within the feed port 9, the inner wall of the feed port 9 seals the discharge port 11, preventing the feed cylinder 10 from communicating with the reaction chamber 2. When the feed cylinder 10 moves into the housing 1, allowing the discharge port 11 to enter the reaction chamber 2, the discharge port 11 communicates with the reaction chamber 2, and the reactant in the feed cylinder 10 can be injected into the reaction chamber 2 to react with the wastewater.

[0025] Specifically, the feed hole 9 can be located on the top wall of the housing 1, the feed cylinder 10 is vertically arranged with its lower end being a closed end, and the discharge hole 11 is provided on the side wall near the closed end.

[0026] In addition, a volume mark can be set on the feed cylinder 10 to facilitate the determination of the amount of reactant added.

[0027] When the wastewater treatment device treats wastewater, it can first inject an appropriate amount of wastewater into the reaction chamber 2 through the inlet pipe 8, and add an appropriate amount of reactant into the feed cylinder 10 in the first position. Then, it moves the feed cylinder 10 to the second position to inject an appropriate amount of reactant into the reaction chamber 2. After the water injection is completed, the feed cylinder 10 will move to the first position. At this time, the inner wall of the feed cylinder 10 acts as a seal for the feed hole 9, and the gas generated during the reaction will not enter the feed cylinder 10 and contaminate the reactant.

[0028] In this scheme, the structure used to add the reactant is simple and easy to operate, and it can avoid the gas generated by the reaction from contaminating the reactant, thus better protecting the reactant.

[0029] In some embodiments, the wastewater treatment apparatus further includes an elastic element 13 connected between the housing 1 and the feed cylinder 10, the elastic element 13 being capable of driving the feed cylinder 10 from the second position to the first position. (Reference) Figure 2As shown, the elastic element 13 is in the form of a spring, disposed inside the housing 1. One end of the spring is connected to the inner wall of the housing 1, and the other end is connected to the feed cylinder 10. The elastic element 13, through its elasticity, allows the feed cylinder 10 to remain in a first position. When the feed cylinder 10 is driven to a second position by an external force, the elastic element 13 allows the feed cylinder 10 to return to the first position after the external force is released. In other embodiments, the elastic element 13 can also be disposed outside the housing 1, and can be connected to the feed cylinder 10 in various directions. In this application, the external force can be provided by the weight of the wastewater itself. For example, the wastewater treatment device also includes a connecting plate 14 connected to the feed cylinder 10 and extending into the reaction chamber 2. The connecting plate 14 has a linkage section that can receive and overflow the liquid flowing out of the inlet pipe 8. The elastic element 13 is installed between the receiving surface of the linkage section and the inner wall of the housing 1. Figure 1 As shown, the connecting plate 14 can be L-shaped, including a horizontal linkage section and a vertical part. One end of the vertical part is connected to the bottom of the feed cylinder 10, and one end of the elastic element 13 is connected to the linkage section, while the other end is connected to the top wall of the housing 1. When wastewater is injected through the water inlet pipe 8, the wastewater falls onto the linkage section of the connecting plate 14 and flows further into the reaction chamber 2. The impact force of the wastewater causes the connecting plate 14 and the feed cylinder 10 to overcome the elastic force of the elastic element 13 and move to the second position. The discharge port 11 then connects to the reaction chamber 2, and the reactant in the feed cylinder 10 begins to be added to the reaction chamber 2. When the wastewater injection stops, the elastic element 13 causes the connecting plate 14 and the feed cylinder 10 to return to the first position, and the discharge port 11 returns to the feed port 9. The reactant in the feed cylinder 10 is no longer injected into the reaction chamber 2. It can be seen that this structure realizes the function of automatically adding reactant when water is injected, while avoiding the contamination of the reactant by the gas generated during the reaction through the feed port.

[0030] Additionally, a sealing gasket 12 for sealing the discharge hole 11 is provided on the inner wall of the feed hole 9. (Reference) Figure 2 As shown, the sealing gasket 12 is disposed on the inner wall of the feed hole 9. It can be made of elastic material and can fit tightly against the outer wall of the feed cylinder 10 through its own elastic deformation to seal the discharge hole 11 and prevent leakage.

[0031] Additionally, a stirring assembly 30 is provided in the reaction chamber 2. The stirring assembly 30 includes a motor 301 (or a similar driving component), a rotating shaft 302, and fan blades 303. The motor 301 can drive the rotating shaft 302 and fan blades 303 to rotate, thereby stirring the wastewater and reactants in the reaction chamber 2 and improving the reaction efficiency. The stirring assembly 30 can be located at the bottom of the reaction chamber 2 or at other positions.

[0032] In some embodiments, the filter chamber 3 is provided with a filter screen 16 and a scraper assembly. The filter screen 16 is formed in a downwardly concave shape, and the scraper assembly includes a scraper 20 disposed at the bottom of the filter screen 16 and a drive member 18 for driving the scraper 20 to move. The filter screen 16 is formed in a downwardly concave shape, including a side portion and a bottom portion. The scraper 20 can move along the bottom portion to clean the solid sludge accumulated on the bottom portion of the filter screen 16 and prevent the filter screen 16 from clogging. A support plate 15 is provided on the inner sidewall of the housing 1, and the edge portion of the filter screen 16 is fixed to the support plate 15. The driving component 18 can be a telescopic cylinder, such as a hydraulic cylinder or a pneumatic cylinder. The scraper assembly can include a horizontal guide rail 17 disposed in the filter chamber 3, a sliding sleeve 19 sleeved on the guide rail 17, and a scraper 20 connected to the sliding sleeve 19. The driving component 18 can drive the scraper 20 to move along the guide rail 17. In addition, two limiting members 22 are provided on the guide rail 17, and the sliding sleeve 19 is disposed between the two limiting members 22, thereby limiting the movement range of the sliding sleeve 19 and the scraper 20 by the limiting members 22. Furthermore, a brush 21 can be provided on the scraper 20, which can more thoroughly clean the filter screen 16.

[0033] The filter screen 16 has a sludge discharge port 23 at its bottom, and a movable sealing plate 28 is installed at the sludge discharge port 23. The wastewater treatment device includes a sludge discharge pipe 24 connected to the sludge discharge port 23 and a storage chamber 26 connected to the sludge discharge pipe 24. The sludge discharge port 23 is located at the bottom of the filter screen 16. The sealing plate 28 can be moved by external force to close or open the sludge discharge port 23. Under normal use, the sludge discharge port 23 is sealed by the sealing plate 28. When a large amount of sludge accumulates on the filter screen 16, the sealing plate 28 can be moved to open the sludge discharge port 23, allowing the sludge to be discharged through the sludge discharge port 23. The discharged sludge then enters the storage chamber 26 through the sludge discharge pipe 24. (Reference) Figure 1 and Figure 3 As shown, one end of the sealing plate 28 is located at the sludge discharge port 23, and the other end extends through the housing 1 to the outside of the housing 1. The end located on the outside facilitates operation and movement of the sealing plate 28. The sludge discharge port 23 is located at the bottom of the filter screen 16 near the side to facilitate engagement with the sealing plate 28; additionally, refer to... Figure 4 As shown, the end of the sealing plate 28 located outside the housing 1 is inclined upward, so that the angle formed between the sealing plate 28 and the side of the filter screen 16 is an obtuse angle slightly greater than 90 degrees, thus avoiding the formation of dead corners for sludge accumulation.

[0034] Additionally, the housing 1 includes a transition chamber 27 connected to the bottom of the filter screen 16. The transition chamber 27 is located on the side of the sludge discharge pipe 24, and the transition chamber 27 and the sludge discharge pipe 24 are connected through a filter hole 25. (Reference) Figure 2As shown, the transition chamber 27 is located below the filter screen 16 and can receive filtered wastewater from the filter chamber 3. The sludge discharge pipe 24 is located on both sides of the transition chamber 27 and is connected through filter holes 25, allowing wastewater in the sludge of the sludge discharge pipe 24 to enter the transition chamber 27 through the filter holes 25. The sludge discharge pipe 24 extends at an angle, allowing sludge to flow along the lower side of its inner wall, thus allowing wastewater to pass through the filter holes 25 and enter the transition chamber 27.

[0035] Furthermore, the housing 1 is provided with a water outlet chamber 4 that can communicate with the transition chamber 27, and the water outlet chamber 4 is provided with a water outlet pipe 7 that communicates with the outside. The water outlet chamber 4 can hold the treated wastewater, and the water outlet pipe 7 can be selectively opened to discharge the wastewater according to the amount of wastewater stored therein.

[0036] The reaction chamber 2, the filtration chamber 3, the transition chamber 27, and the outlet chamber 4 are arranged sequentially from top to bottom, with the storage chamber 26 located on either side of the outlet chamber 4. (Reference) Figure 2 As shown, reaction chamber 2, filter chamber 3, transition chamber 27 and outlet chamber 4 are arranged in sequence along the vertical direction. Reaction chamber 2 is connected to filter chamber 3 through first valve 5, and transition chamber 27 is connected to outlet chamber 4 through second valve 6.

[0037] In addition, the housing 1 is provided with a drain port 29 communicating with the storage chamber 26. The storage chamber 26 can store a certain amount of sludge, and the sludge can be discharged through the drain port 29. The drain port 29 can be connected to a sewage pump to suck up the sludge in the storage chamber 26.

[0038] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A nickel-containing wastewater treatment device, characterized in that, The device includes a housing (1), in which a reaction chamber (2) and a filter chamber (3) are disposed, which are connected to the reaction chamber (2). The housing (1) is provided with an inlet pipe (8) for introducing wastewater into the reaction chamber (2) and a feed hole (9) connected to the reaction chamber (2). The feed hole (9) is used to accommodate a feed cylinder (10) into which a reactant is placed. The side wall of the feed cylinder (10) is provided with a discharge hole (11). The discharge hole (11) can move between a first position and a second position along the length direction of the feed cylinder (10). In the first position, the discharge hole (11) is located in the feed hole (9), and the inner wall of the feed hole (9) seals it. In the second position, the discharge hole (11) is connected to the reaction chamber (2). The nickel-containing wastewater treatment device further includes an elastic element (13) connected between the housing (1) and the feed cylinder (10), the elastic element (13) being able to drive the feed cylinder (10) from the second position to the first position; The nickel-containing wastewater treatment device also includes a connecting plate (14) connected to the feed cylinder (10) and extending into the reaction chamber (2). The connecting plate (14) has a linkage section that can receive and overflow the liquid flowing out of the water inlet pipe (8). The elastic element (13) is installed between the receiving surface of the linkage section and the inner wall of the housing (1). The filter chamber (3) is provided with a filter screen (16); the bottom of the filter screen (16) is provided with a sludge discharge port (23); the nickel-containing wastewater treatment device is provided with a sludge discharge pipe (24) that can be connected to the sludge discharge port (23) and a storage chamber (26) connected to the sludge discharge pipe (24); the shell (1) is provided with a transition chamber (27) that is connected to the bottom of the filter screen (16); the transition chamber (27) is located on the side of the sludge discharge pipe (24); and the transition chamber (27) and the sludge discharge pipe (24) are connected through a filter hole (25); the sludge discharge pipe (24) extends at an angle.

2. The nickel-containing wastewater treatment device according to claim 1, characterized in that, A sealing gasket (12) for sealing the discharge hole (11) is provided on the inner wall of the feed hole (9). And / or, the reaction chamber (2) is provided with a stirring assembly (30).

3. The nickel-containing wastewater treatment device according to claim 1, characterized in that, The filter chamber (3) is provided with a scraper assembly, the filter screen (16) is formed in a downwardly concave shape, and the scraper assembly includes a scraper (20) disposed at the bottom of the filter screen (16) and a drive member (18) for driving the scraper (20) to move.

4. The nickel-containing wastewater treatment device according to claim 3, characterized in that, A movable sealing plate (28) is provided at the sludge discharge port (23).

5. The nickel-containing wastewater treatment device according to claim 1, characterized in that, The housing (1) is provided with a water outlet chamber (4) that can communicate with the transition chamber (27), and the water outlet chamber (4) is provided with a water outlet pipe (7) that communicates with the outside.

6. The nickel-containing wastewater treatment device according to claim 5, characterized in that, The reaction chamber (2), the filtration chamber (3), the transition chamber (27) and the outlet chamber (4) are arranged in order from top to bottom, and the storage chamber (26) is located on both sides of the outlet chamber (4).

7. The nickel-containing wastewater treatment device according to claim 1, characterized in that, The housing (1) is provided with a drain outlet (29) that communicates with the storage chamber (26).

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