A copper-nickel plating wastewater membrane separation and reuse equipment

Abstract

The application provides a copper-nickel plating wastewater membrane separation and recycling equipment, which comprises a rotary separation structure, wherein the rotary separation structure comprises a rotating ring and a filter plate; a placing groove is formed in the middle of the rotating ring; an inner plate is arranged in the middle of both sides of the rotating ring; a mounting strip is arranged between the inner plate and the rotating ring; the filter plate is arranged on the outer wall of the mounting strip; and a tooth ring is arranged on both sides of the rotating ring. The application has the advantages that the rotary separation structure can rotate, the rotary separation structure drives the filter plate inside to rotate, the filter plate slides on the outer wall of the scraper, the scraper is used for cleaning the impurities attached to the surface of the filter plate, the surface of the filter plate is prevented from being blocked by the impurities, the first water pipe can uniformly spray the copper-nickel plating wastewater out through the annular array of the second water pipe on the outer wall of the first water pipe, and the copper-nickel plating wastewater uniformly contacts the filter plate.

Description

Technical Field

[0001] This invention mainly relates to the field of copper-nickel plating wastewater, specifically to a membrane separation and reuse device for copper-nickel plating wastewater. Background Technology

[0002] Copper and nickel plating are widely used surface treatment processes in industries such as electronic components, hardware products, and automotive parts. The production process continuously generates large amounts of cleaning wastewater from copper and nickel plating. This wastewater contains heavy metal ions such as copper and nickel, as well as organic components such as complexing agents and surfactants. Direct discharge of this wastewater not only causes serious environmental pollution but also wastes water and valuable metal resources. Membrane separation technology, with its advantages of high separation precision, excellent effluent quality, and simultaneous water reuse and heavy metal concentration and recovery, has become the mainstream technology for the deep treatment of copper and nickel plating wastewater.

[0003] However, in actual engineering operations, the composition of copper-nickel plating wastewater is complex. In addition to dissolved heavy metal ions, it also contains various impurities such as suspended solid particles, colloidal substances, micro-precipitates of heavy metal hydroxides, and organic complex flocs. During membrane separation, the wastewater flows along the membrane surface and is filtered under pressure. The aforementioned impurities continuously contact the membrane surface, gradually adsorbing and depositing on the membrane surface and the inner wall of the membrane pores, forming a dense fouling layer.

[0004] The adhesion of impurities to the membrane surface directly leads to a rapid decline in membrane flux and a significant decrease in the overall treatment efficiency of the equipment. Increasing the operating pressure to maintain a certain water production rate will further increase system energy consumption and accelerate mechanical damage to membrane elements. At the same time, the accumulation of fouling on the membrane surface will cause fluctuations in membrane retention performance, resulting in unstable effluent water quality and making it difficult to consistently meet the water quality requirements for reuse in production.

[0005] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Summary of the Invention

[0006] 1. The technical problem that the invention aims to solve: This invention provides a membrane separation and reuse device for copper-nickel plating wastewater to solve the technical problems existing in the background art.

[0007] 2. Technical Solution: To achieve the above objectives, the technical solution provided by the present invention is as follows: a membrane separation and reuse device for copper-nickel plating wastewater, comprising a wastewater spraying structure, wherein a rotating separation structure is rotatably connected to both sides of the inner wall of the wastewater spraying structure, and an outlet structure is provided inside the rotating separation structure, wherein the outlet structure and the rotating separation structure are rotatably connected. A rotating separation structure includes a rotating ring and a filter plate. The rotating ring has a placement groove in the middle, and inner plates are provided in the middle of both sides of the rotating ring. An installation strip is provided between the inner plates and the rotating ring. The filter plate is disposed on the outer wall of the installation strip, and toothed rings are provided on both sides of the rotating ring.

[0008] Furthermore, the wastewater spraying structure includes a shell, mounting plates are provided on both sides of the inner wall of the shell, a mounting groove is provided on the top of the mounting plate, support frames are provided on both sides of the outer wall of the mounting plate, and a scraper is provided at one end of the support frame.

[0009] Furthermore, sealing rings are provided on both sides of the inner wall of the mounting plate, and a dual-head motor is provided on one side of the top of the mounting plate. The output end of the dual-head motor is provided with a drive gear, which meshes with the gear ring.

[0010] Furthermore, a first water pipe is provided in the middle of the interior of the shell, and second water pipes are provided on both sides of the first water pipe. The outer wall of the second water pipe has an outlet.

[0011] Furthermore, the outer wall of the mounting strip is provided with a positioning post, the outer wall of the positioning post is provided with a limiting block, a spring is provided between the positioning post and the limiting block, and the cross section of the limiting block is set as an isosceles trapezoid.

[0012] Furthermore, the outer wall of the filter plate is provided with a first insertion hole, and a second insertion hole is provided on one side of the first insertion hole, the second insertion hole being engaged with the limiting block.

[0013] Furthermore, the water outlet structure includes a positioning ring, with sealing rings on both sides of the positioning ring. The outer wall of the sealing ring is fitted with the inner wall of the rotating ring. A water outlet pipe is provided at the top of the positioning ring, and a water inlet groove is formed on the outer wall of the water outlet pipe.

[0014] Furthermore, the number of water outlet pipes is set to multiple, and the water outlet pipes are located inside the rotating ring.

[0015] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this invention has the following advantages: The present invention features a rotating separation structure that allows the internal filter plate to rotate, causing the filter plate to slide on the outer wall of a scraper. The scraper cleans impurities adhering to the surface of the filter plate, preventing impurities from clogging the surface of the filter plate. A second water pipe is arranged in a ring around the outer wall of the first water pipe, allowing the first water pipe to spray out copper-nickel plating wastewater evenly, ensuring that the copper-nickel plating wastewater comes into uniform contact with the filter plate. The first water pipe and the second water pipe in the ring array achieve uniform water distribution across the entire filter surface, avoiding rapid contamination caused by excessive local filter surface load; at the same time, the rotation of the filter plate enhances the cross-flow shearing effect, effectively alleviating the concentration polarization phenomenon, and ensuring long-term stability of membrane flux and effluent quality. The produced water can be directly reused in the plating cleaning process, with a water reuse rate of over 70%. The snap-fit ​​quick-release structure, consisting of positioning posts, limit blocks, and return springs, allows for the installation and removal of filter plates without any tools, enabling a single person to replace the filter plates quickly. Compared to traditional bolt-fixed membrane modules, maintenance time is reduced by more than 60%, lowering the technical threshold for on-site operation and maintenance. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the wastewater spraying structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the rotational separation structure of the present invention; Figure 4 This is a schematic diagram of the three-dimensional unfolded structure of the rotational separation structure of the present invention; Figure 5 This is a three-dimensional structural diagram of the water outlet structure of the present invention.

[0017] Figure label: 1. Wastewater spray structure; 101. Shell; 102. Mounting plate; 103. Mounting groove; 104. Support frame; 105. Scraper; 106. Sealing ring; 107. Dual-head motor; 108. Drive gear; 109. First water pipe; 110. Second water pipe; 111. Water outlet; 2. Rotary separation structure; 201. Rotating ring; 202. Placement groove; 203. Inner plate; 204. Mounting strip; 205. Positioning column; 206. Limiting block; 207. Filter plate; 208. First insertion hole; 209. Second insertion hole; 3. Water outlet structure; 301. Positioning ring; 302. Sealing ring; 303. Water outlet pipe; 304. Water inlet groove. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description of the invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "page," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Example See attached document Figure 1-5 A membrane separation and reuse device for copper-nickel plating wastewater includes a wastewater spraying structure 1, a rotating separation structure 2 rotatably connected to both sides of the inner wall of the wastewater spraying structure 1, and an outlet structure 3 disposed inside the rotating separation structure 2, wherein the outlet structure 3 is rotatably connected to the rotating separation structure 2. The rotating separation structure 2 includes a rotating ring 201 and a filter plate 207. A placement groove 202 is formed in the middle of the rotating ring 201. Inner plates 203 are disposed between the middle of the two sides of the rotating ring 201. An mounting strip 204 is disposed between the inner plates 203 and the rotating ring 201. The filter plate 207 is disposed on the outer wall of the mounting strip 204. Toothed rings are provided on both sides of the rotating ring 201. A positioning post 205 is provided on the outer wall of the mounting strip 204. A limit block 206 is provided on the outer wall of the positioning post 205. A spring is disposed between the positioning post 205 and the limit block 206. The cross-section of the limit block 206 is an isosceles trapezoid. The filter plate... The outer wall of filter plate 207 has a first insertion hole 208, and a second insertion hole 209 is provided on one side of the first insertion hole 208. The second insertion hole 209 is engaged with the limiting block 206. Filter plate 207 can be replaced. Filter plate 207 is installed on both sides of rotating ring 201. The outer wall of filter plate 207 is in contact with mounting strip 204. Then, the first insertion hole 208 is pressed against the limiting block 206, and the limiting block 206 is pressed against the spring, causing the limiting block 206 to move inward. After the limiting block 206 passes the first insertion hole 208, the spring pushes the limiting block 206 back to its original position and engage with the first insertion hole 208, thus fixing the filter plate 207.

[0023] Furthermore, the wastewater spray structure 1 includes a housing 101. Mounting plates 102 are provided on both sides of the inner wall of the housing 101. A mounting groove 103 is formed on the top of the mounting plate 102. Support frames 104 are provided on both sides of the outer wall of the mounting plate 102. A scraper 105 is provided at one end of each support frame 104. Sealing rings 106 are provided on both sides of the inner wall of the mounting plate 102. A dual-head motor 107 is provided on one side of the top of the mounting plate 102. A drive gear 108 is provided at the output end of the dual-head motor 107. The drive gear 108 meshes with a gear ring. The middle section inside the housing 101... A first water pipe 109 is provided, and a second water pipe 110 is provided on both sides of the first water pipe 109. The outer wall of the second water pipe 110 has an outlet 111. When the dual-head motor 107 is started, the dual-head motor 107 drives the drive gear 108 to rotate. The drive gear 108 drives the rotating separation structure 2 to rotate on the inner wall of the sealing ring 106. The scraper 105 at one end of the support frame 104 is in contact with the outer wall of the filter plate 207. During the rotation of the rotating separation structure 2, the inner filter plate 207 is driven to contact one side of the scraper 105. The scraper 105 is used to clean the impurities attached to the outer wall of the filter plate 207. The first water pipe 109 is connected to the pump body, and the pump body sends the copper-nickel plating wastewater into the first water pipe 109. The copper-nickel plating wastewater enters the second water pipe 110 through the first water pipe 109 and is sprayed out through the outlet 111 to contact the filter plate 207, so that the copper-nickel plating wastewater can clean the impurities attached to the surface of the filter plate 207.

[0024] Furthermore, the water outlet structure 3 includes a positioning ring 301, with sealing rings 302 on both sides of the positioning ring 301. The outer wall of the sealing rings 302 is fitted to the inner wall of the rotating ring 201. A water outlet pipe 303 is provided at the top of the positioning ring 301. A water inlet groove 304 is provided on the outer wall of the water outlet pipe 303. The number of water outlet pipes 303 is set to multiple. The water outlet pipes 303 are located inside the rotating ring 201 and are connected to the pump body. The pump body draws the copper-nickel plating wastewater separated by the filter plate 207 into the water outlet pipe 303 through the water inlet groove 304 and discharges it. After being separated by the filter plate 207, the copper-nickel plating wastewater enters the rotating ring 201 and then enters the water outlet pipe 303 through the water inlet groove 304.

[0025] The copper-nickel plating wastewater to be treated is pumped to the first water pipe 109 inside the housing 101 by a booster pump. The wastewater is then diverted along the first water pipe 109 to the second water pipe 110 arranged in a ring array. Finally, it is evenly sprayed onto the outer surface of the filter plate 207 of the rotating separation structure 2 through the outlet 111 on the outer wall of the second water pipe 110, so as to achieve uniform water distribution across the entire filter surface and avoid excessive local load.

[0026] The dual-head motor 107 starts, driving the drive gear 108 of the output shafts at both ends to rotate synchronously; the drive gear 108 meshes with the gear rings on both sides of the rotating ring 201, driving the entire rotating separation structure 2 to rotate stably along the sealing ring 106 inside the mounting plate 102.

[0027] Driven by spray pressure, wastewater penetrates the membrane layer from the outside of the filter plate 207 and enters the inner cavity of the rotating ring 201. Impurities such as suspended particles, colloids, and heavy metal flocs in the wastewater are trapped on the outer surface of the filter plate 207, completing the membrane separation process.

[0028] During the rotation of the rotary separation structure 2, the scraper 105 fixed to the end of the support frame 104 is always in contact with the outer surface of the filter plate 207. As the filter plate 207 continues to rotate, the scraper 105 continuously scrapes off the contaminant layer and deposited impurities attached to the surface of the filter plate, avoiding membrane pore blockage and maintaining stable membrane flux.

[0029] The scraped-off impurities settle to the bottom of the shell 101 and are periodically discharged through the slag discharge port added to the bottom of the shell 101 to prevent the impurities from adhering again.

[0030] The purified water that penetrates the filter plate 207 is collected in the inner cavity of the rotating ring 201; the fixedly installed water outlet pipe 303 guides and collects the water in the cavity through the water inlet groove 304 on the outer wall, and finally transports it to the reuse pipeline network through the water outlet pipe 303 to complete the water resource recycling.

[0031] The sealing rings 302 on both sides of the positioning ring 301 are fitted and sealed to the inner wall of the rotating ring 201 to prevent unfiltered wastewater from seeping into the product water side and to ensure the quality of the effluent.

[0032] When the filter plate 207 reaches the end of its service life and needs to be replaced, pull the filter plate 207 outward along the axial direction of the mounting strip 204. During the pulling process, the inner wall of the second insertion hole 209 presses against the inclined surface of the limiting block 206, and the limiting block 206 compresses the spring and retracts inward, releasing the locking limit, so that the old filter plate can be quickly removed.

[0033] When installing a new filter plate, align the first insertion hole 208 of the filter plate 207 with the positioning post 205 and push it in. After the limiting block 206 is compressed and contracted, it pops out under the action of the spring and locks into the second insertion hole 209, thus completing the quick fixing of the filter plate. Disassembly and maintenance can be completed without tools.

[0034] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A membrane separation and reuse device for copper-nickel plating wastewater, characterized in that: include Wastewater spray structure (1), the two sides of the inner wall of the wastewater spray structure (1) are rotatably connected to a rotating separation structure (2), the interior of the rotating separation structure (2) is provided with a water outlet structure (3), and the water outlet structure (3) is rotatably connected to the rotating separation structure (2). The rotating separation structure (2) includes a rotating ring (201) and a filter plate (207). The rotating ring (201) has a placement groove (202) in the middle. The rotating ring (201) has an inner plate (203) in the middle of both sides. An installation strip (204) is provided between the inner plate (203) and the rotating ring (201). The filter plate (207) is provided on the outer wall of the installation strip (204). Toothed rings are provided on both sides of the rotating ring (201).

2. The membrane separation and reuse equipment for copper-nickel plating wastewater according to claim 1, characterized in that: The wastewater spray structure (1) includes a shell (101), with mounting plates (102) provided on both sides of the inner wall of the shell (101), a mounting groove (103) provided on the top of the mounting plate (102), and support frames (104) provided on both sides of the outer wall of the mounting plate (102), with a scraper (105) provided at one end of the support frame (104).

3. The membrane separation and reuse equipment for copper-nickel plating wastewater according to claim 2, characterized in that: Sealing rings (106) are provided on both sides of the inner wall of the mounting plate (102), and a dual-head motor (107) is provided on one side of the top of the mounting plate (102). A drive gear (108) is provided at the output end of the dual-head motor (107), and the drive gear (108) meshes with the gear ring.

4. The membrane separation and reuse equipment for copper-nickel plating wastewater according to claim 1, characterized in that: A first water pipe (109) is provided in the middle of the interior of the housing (101), and a second water pipe (110) is provided on both sides of the first water pipe (109). An outlet (111) is provided on the outer wall of the second water pipe (110).

5. The membrane separation and reuse equipment for copper-nickel plating wastewater according to claim 1, characterized in that: The outer wall of the mounting strip (204) is provided with a positioning post (205), the outer wall of the positioning post (205) is provided with a limiting block (206), a spring is provided between the positioning post (205) and the limiting block (206), and the cross section of the limiting block (206) is set as an isosceles trapezoid.

6. The membrane separation and reuse equipment for copper-nickel plating wastewater according to claim 1, characterized in that: The outer wall of the filter plate (207) is provided with a first insertion hole (208), and a second insertion hole (209) is provided on one side of the first insertion hole (208). The second insertion hole (209) is engaged with the limiting block (206).

7. The membrane separation and reuse equipment for copper-nickel plating wastewater according to claim 1, characterized in that: The water outlet structure (3) includes a positioning ring (301), and sealing rings (302) are provided on both sides of the positioning ring (301). The outer wall of the sealing ring (302) is in contact with the inner wall of the rotating ring (201). A water outlet pipe (303) is provided on the top of the positioning ring (301), and a water inlet groove (304) is provided on the outer wall of the water outlet pipe (303).

8. The membrane separation and reuse equipment for copper-nickel plating wastewater according to claim 7, characterized in that: The number of water outlet pipes (303) is set to multiple, and the water outlet pipes (303) are located inside the rotating ring (201).

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