Multi-physical field cooperative electro-floating water treatment device

Abstract

The application discloses a novel multi-physical field cooperative electric float water treatment device and relates to the technical field of water treatment. The device comprises a device main body, a cross cyclone water distributor arranged in the device main body and sequentially distributed from bottom to top, a ring-shaped concentric electrode assembly, a fish scale type separator and a negative pressure rotary demister. Through a three-stage cooperative treatment process of sedimentation-adsorption-air flotation, the separation efficiency of pollutants is significantly improved. The sedimentation is used for strengthening flocculation by the cross cyclone water distributor to quickly remove coarse particles with a size of >200 microns. The interception is used for electrolyzing micro bubbles by the ring-shaped concentric electrode assembly and combining with the laminar flow matrix of the bionic fish scale type separator to intercept impurities with a size of >50 microns. The air flotation is used for directionally sucking and removing micro-nano pollutants with a size of <50 microns by the negative pressure rotary demister to realize accurate grading purification. Through the four-dimensional three-dimensional structure design of the high integration of the cyclone water distribution, the ring-shaped electrode, the fish scale separation and the negative pressure demisting, the device is compactly installed and is especially suitable for space limited scenes.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, specifically to a multi-physics field synergistic electroflotation water treatment device. Background Technology

[0002] With the acceleration of industrialization and increasingly stringent environmental standards, efficient, energy-saving, and environmentally friendly water treatment technologies have become a research hotspot.

[0003] Traditional dissolved air flotation (DAF) water treatment systems generally suffer from drawbacks such as low removal efficiency of micro-nano-level suspended solids, long hydraulic retention time, and uneven mixing of chemical agents, making it difficult to meet the needs of modern industrial wastewater upgrading and water resource reuse. In existing technologies, conventional DAF devices achieve a capture efficiency of less than 30% for suspended particles smaller than 50 micrometers. The flocculation reaction relies on coagulants such as aluminum / iron salts, which can easily cause secondary pollution and incur high operating costs. While electrochemical flotation technology can reduce the amount of reagents added, it generally suffers from technical bottlenecks such as rapid electrode passivation, uneven distribution of microbubbles, and poor stability of the scum layer due to turbulent flow. Therefore, there is an urgent need for an electro-flotation water treatment device that uses multi-stage physical fields in synergy. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a multi-physics field synergistic electroflotation water treatment device.

[0005] The technical solution of the present invention: a multi-physics field synergistic electroflotation water treatment device, comprising a device body, a cross-shaped vortex water distributor disposed within the device body and distributed sequentially from bottom to top, an annular concentric electrode assembly, a fish-scale type separator, and a negative pressure rotary demister; The cross-shaped vortex water distributor includes a main connecting pipe that is connected to the outside through an L-shaped connecting pipe at the bottom, several horizontal branch pipes that are evenly distributed around the outer wall of the main connecting pipe, and a reverse vortex spiral blade provided in each of the horizontal branch pipes. The free end of the horizontal branch pipe is provided with a water outlet. The fish-scale separator includes a mounting plate with an overflow pipe at the center and a downward-sloping periphery, and a fish-scale separation plate located at the upper end of the mounting plate and used to connect the inner wall of the main body of the device and the outer wall of the overflow pipe. The fish-scale separation plate and the mounting plate form a clear water zone. The fish-scale separation plate includes a first mounting ring located at the upper end of the mounting buckle plate, and several fish-scale sub-plates distributed from top to bottom and arranged in a tile-like manner. The inner walls of each fish-scale sub-plate are connected by several radiating mounting vertical strips, and a water passage is formed between two adjacent fish-scale sub-plates. The device body has an outlet on its side wall located in the clear water area, a first drain outlet on its side wall located at the upper end of the first mounting ring, and a second drain outlet at the bottom of the device body.

[0006] Furthermore, the annular concentric electrode assembly includes an electrolytic tank connected to the inner wall of the device body via a second mounting ring at its upper end, several annular anode plates arranged concentrically at the upper end of the electrolytic tank, and several annular cathode plates arranged concentrically at the lower end of the electrolytic tank. The annular anode plates and the annular cathode plates are staggered and overlapped. An annular overflow port is provided on the outer wall of the electrolytic tank, and an overflow channel is provided at the center of the upper end of the electrolytic tank.

[0007] Explanation: Water flows into the electrolysis tank through the annular overflow port. Due to the overlapping and interleaved distribution of the annular anode and cathode plates, the water flows in a stream-like pattern. At the same time, the annular anode and cathode plates generate microbubbles such as H2 and O2 through direct current electrolysis. This stream-like flow pattern significantly increases the effective contact area between the water and the annular anode and cathode plates, enhances the intensity and uniformity of the electrolysis reaction, and promotes the full combination of H2 and O2 with pollutants in the wastewater, thereby improving the efficiency of air flotation separation.

[0008] Furthermore, each of the annular anode plates and each of the annular cathode plates has a silicone rubber gasket at the overlap, and both the annular anode plates and the annular cathode plates are connected to a voltage regulator.

[0009] Note: The use of silicone rubber gaskets effectively prevents short circuits caused by direct contact between adjacent annular anode plates and annular cathode plates, ensuring the safety and stability of the electrolysis process. The voltage regulator ensures that the output voltage remains stable, thereby guaranteeing the continuous and stable electrolysis process and reducing the occurrence of side reactions.

[0010] Furthermore, the negative pressure rotary demister includes several track pulleys that can rotate along the upper end of the main body of the device after being driven by an external drive device, several horizontal negative pressure pipes with one end connected to the track pulleys and the other end connected to the foam discharge cylinder located at the center, a negative pressure pump connected to each of the horizontal negative pressure pipes, and a negative pressure suction port provided at the bottom end of the horizontal negative pressure pipe.

[0011] Explanation: When the negative pressure rotary demister is in use, the external drive device drives each track pulley to rotate at the top of the device body, while each horizontal negative pressure pipe rotates synchronously. At this time, the negative pressure pump draws the hydrophobic foam impurities on the water surface into each horizontal negative pressure pipe through the negative pressure suction port, and then flows out through the foam discharge cylinder, thus achieving all-round removal of foam inside the device body.

[0012] Furthermore, the foam discharge cylinder is connected to a foam collection box via a connecting pipe, and the foam collection box has a transparent observation window on its side wall.

[0013] Note: Hydrophobic foam impurities flowing out of the foam outlet are temporarily stored in the foam collection box. The transparent observation window allows operators to monitor the foam collection volume in real time and clean it in a timely manner to avoid foam accumulation affecting the normal operation of the device.

[0014] Furthermore, the L-shaped connecting pipe is connected to a flocculation premixing box, and a reagent addition chamber is provided at the center of the flocculation premixing box. The upper end of the reagent addition chamber is connected to a liquid distribution connecting pipe assembly via a liquid pump. The liquid distribution connecting pipe assembly includes a main connecting pipe, several liquid distribution branch pipes for connecting the main connecting pipe to the flocculation premixing box, and several spraying cylinders located inside the flocculation premixing box and connected to the liquid distribution branch pipes one by one. The sidewall of the spraying cylinder has a porous structure. A scraping-stirring composite assembly is provided inside the flocculation premixing box and at the bottom of the reagent addition chamber. A sludge discharge box is connected to the center of the bottom of the flocculation premixing box.

[0015] Instructions: Before the wastewater enters the main body of the device through the L-shaped connecting pipe, it can be introduced into the flocculation premixing tank, where flocculants and coagulants are added. The flocculants are alum, aluminum chloride, or ferric chloride, and the coagulants are chitosan or anionic polyacrylamide. By mixing the flocculants and coagulants with the wastewater to form flocs, the turbidity, color, and concentration of some pollutants in the wastewater can be significantly reduced. When the components of the flocculation premixing tank are in operation, the flocculants and coagulants are pumped into each distribution branch pipe by a liquid pump and then evenly sprayed into the flocculation premixing tank through the spray nozzles at the bottom of each distribution branch pipe. At this time, the flocculants and coagulants are stirred with the wastewater by the scraping-stirring composite component.

[0016] Furthermore, the scraping-stirring composite assembly includes a double-threaded connecting rod arranged horizontally at the bottom of the flocculation premixing tank, a rotary motor driving the double-threaded connecting rod to rotate, sliding blocks sleeved on the left and right ends of the double-threaded connecting rod and connected to a vertical mounting frame at the upper end via a first hydraulic cylinder, and several stirring rods arranged from top to bottom on the side wall of the vertical mounting frame.

[0017] Instructions: When using the scraper-mixer composite component, the rotating motor drives the double-threaded connecting rod to repeatedly rotate forward and backward. At this time, the two sliding blocks move back and forth on the double-threaded connecting rod. Due to the connecting action of the first hydraulic cylinder, the corresponding vertical mounting frame also moves synchronously. The various mixing rods on the vertical mounting frame fully mix the sewage at different depths, ensuring that the agent and sewage are evenly mixed and enhancing the flocculation effect.

[0018] Furthermore, a fixed scraper is connected to the bottom of the vertical mounting frame, and mounting openings are provided on the left and right sides of the fixed scraper. An adjusting scraper is connected to each mounting opening through a horizontally mounted second hydraulic cylinder.

[0019] Instructions: When cleaning the flocculated sediment at the bottom of the flocculation premixing tank, the first hydraulic cylinder moves the vertical mounting frame downwards along the corresponding sliding block until the fixed scraper contacts the bottom of the flocculation premixing tank. At this point, the rotary motor drives the threaded connecting rod to rotate, causing the two sliding blocks to move towards each other. The fixed scraper can then scrape the sediment into the drain tank located in the middle. The length of the fixed scraper can be adjusted according to the width of the tank bottom. The two second hydraulic cylinders then drive the corresponding adjusting scraper to move out of the mounting port, ensuring that sediment in every corner of the bottom of the flocculation premixing tank is effectively cleaned, preventing sediment buildup and hardening, which would affect the cleanliness of the inner wall of the flocculation premixing tank and the service life of the equipment.

[0020] Furthermore, the inner wall of the main body of the device is provided with an anti-corrosion coating with a thickness of 0.5-1mm, and the anti-corrosion coating material is epoxy resin.

[0021] Note: The epoxy resin anti-corrosion coating can form a dense protective film on the inner wall of the device body, effectively resisting the erosion of acidic and alkaline substances and corrosive ions in sewage, and significantly extending the service life of the device body.

[0022] The beneficial effects of this invention are: The multi-physics field synergistic electroflotation water treatment device of this invention significantly improves pollutant separation efficiency through a three-stage synergistic treatment process of sedimentation, adsorption, and flotation. Sedimentation utilizes a cross-shaped vortex water distributor to enhance flocculation and rapidly remove coarse particles >200μm; interception employs a ring-shaped concentric electrode assembly to electrolyze and generate microbubbles, combined with a biomimetic fish-scale separator laminar flow matrix to intercept impurities >50μm; flotation uses a negative pressure rotating demister to directionally remove micro-nano pollutants <50μm, achieving precise graded purification; the highly integrated four-dimensional structure design of vortex water distribution + ring electrodes + fish-scale separation + negative pressure demister makes the equipment compact, especially suitable for space-constrained scenarios. Furthermore, during operation, the bubbles generated on the surfaces of the annular anode and annular cathode plates carry particulate matter from the wastewater down the fish-scale separator. The fish-scale separator forms a laminar flow matrix, which allows impurities larger than 50μm to be trapped layer by layer and gradually slide to the bottom and be discharged. At this time, the treated wastewater is collected in the clear water area through the water passage set under the fish scale and discharged. This effectively separates pollutants in the wastewater and achieves precise graded purification. Moreover, the fish-scale structure is a biomimetic design, and its shape characteristics make it difficult for water to generate eddies in the fish-scale separator. This avoids problems such as reduced separation effect and remixing of impurities caused by eddies, thus ensuring the separation effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the internal structure of the present invention; Figure 2 This is an internal sectional view of the present invention; Figure 3 This is a cross-sectional view of the fish-scale type separator of the present invention; Figure 4 This is a top view of the negative pressure rotary demister of the present invention mounted on the upper part of the main body of the device; Figure 5 This is a schematic diagram of the cross-shaped vortex water distributor of the present invention; Figure 6 This is a schematic diagram of the internal structure of the horizontal branch pipe of the present invention; Figure 7 This is a perspective view of the negative pressure rotary demister of the present invention; Figure 8 This is a schematic diagram of the external structure of the main body of the device of the present invention; Figure 9 This is a schematic diagram of the internal structure of the flocculation premixing box of the present invention; Figure 10 This is a schematic diagram of the scraping-stirring composite component of the present invention.

[0024] The components are as follows: 1-Main body of the device; 10-Outlet; 11-First sewage outlet; 12-Second sewage outlet; 2-Cross-shaped vortex water distributor; 20-L-shaped connecting pipe; 21-Main connecting pipe; 22-Horizontal branch pipe; 220-Outlet; 23-Reverse vortex spiral blade; 24-Flocculation premixing box; 240-Reagent addition chamber; 241-Liquid pump; 242-Liquid distribution connecting pipe assembly; 243-Main connecting pipe; 244-Liquid distribution branch pipe; 245-Spraying cylinder; 246-Sewage tank; 25-Scraper-mixing composite assembly; 250-Double threaded connecting rod; 251-Rotary motor; 252-Sliding block; 2520-First hydraulic cylinder; 2521-Vertical mounting frame; 253-Mixing rod; 254-Fixed scraper; 255-Mounting port. 256-Second hydraulic cylinder, 257-Adjusting scraper, 3-Annular concentric electrode assembly, 30-Second mounting ring, 31-Electrolysis box, 310-Annular overflow port, 311-Overflow channel, 32-Annular anode plate, 33-Annular cathode plate, 34-Silicone rubber gasket, 35-Voltage stabilizer, 4-Fish-scale separator, 40-Overflow pipe, 41-Mounting buckle plate, 42-Fish-scale separation plate, 420-First mounting ring, 421-Fish-scale sub-plate, 422-Mounting vertical bar, 423-Water passage, 43-Clear water zone, 5-Negative pressure rotary demister, 50-Railway pulley, 51-Horizontal negative pressure pipe, 510-Foam outlet cylinder, 511-Negative pressure suction port, 52-Negative pressure pump, 53-Foam collection box, 530-Transparent observation window. Detailed Implementation

[0025] Example 1 like Figure 1 , 2As shown, a multi-physics field synergistic electro-floating water treatment device includes a device body 1, a cross-shaped vortex water distributor 2 arranged in the device body 1 and distributed from bottom to top, an annular concentric electrode assembly 3, a fish scale type separator 4, and a negative pressure rotary demister 5. like Figure 5 , 6 As shown, the cross-shaped vortex water distributor 2 includes a main connecting pipe 21 that is connected to the outside through an L-shaped connecting pipe 20 at the bottom, four horizontal branch pipes 22 that are evenly distributed on the outer wall of the main connecting pipe 21 along the circumference, and a reverse vortex spiral blade 23 provided in each horizontal branch pipe 22. The free end of the horizontal branch pipe 22 is provided with a water outlet 220. The reverse vortex spiral blade 23 adopts existing technology, such as a serrated spiral blade. like Figure 3 As shown, the fish-scale separator 4 includes a mounting plate 41 with an overflow pipe 40 at the center and an outer periphery that is inclined downwards, and a fish-scale separation plate 42 located at the upper end of the mounting plate 41 and used to connect the inner wall of the device body 1 and the outer wall of the overflow pipe 40. The fish-scale separation plate 42 and the mounting plate 41 form a clear water zone 43. The fish-scale separation plate 42 includes a first mounting ring 420 located at the upper end of the mounting buckle plate 41, and 40 fish-scale sub-plates 421 distributed from top to bottom and arranged in a stacked manner. The inner walls of each fish-scale sub-plate 421 are connected by 8 mounting vertical bars 422 distributed in a radiating manner, and a water passage 423 is formed between two adjacent fish-scale sub-plates 421. A water outlet 10 is provided on the side wall of the main body 1 and located at the clear water zone 43; a first sewage outlet 11 is provided on the side wall of the main body 1 and located at the upper end of the first mounting ring 420; and a second sewage outlet 12 is provided at the bottom end of the main body 1. like Figure 2As shown, the annular concentric electrode assembly 3 includes an electrolytic tank 31 connected to the inner wall of the device body 1 via a second mounting ring 30 at its upper end, two concentrically distributed annular anode plates 32 located at the upper end of the electrolytic tank 31, and three concentrically distributed annular cathode plates 33 located at the lower end of the electrolytic tank 31. The annular anode plates 32 and annular cathode plates 33 are staggered and overlapped. An annular overflow port 310 is provided on the outer wall of the electrolytic tank 31, and an overflow channel 311 is provided at the center of the upper end of the electrolytic tank 31. Water flows into the interior of the electrolytic tank 31 through the annular overflow port 310. Due to the staggered and overlapping distribution of the annular anode plates 32 and annular cathode plates 33, the water flowing through them... The flow pattern is a cascading flow. Meanwhile, since the annular anode plate 32 and the annular cathode plate 33 can generate microbubbles such as H2 and O2 through direct current electrolysis, the above-mentioned cascading flow pattern can significantly increase the effective contact area between the water flow and the annular anode plate 32 and the annular cathode plate 33, enhance the intensity and uniformity of the electrolysis reaction, and promote the full combination of H2 and O2 with pollutants in wastewater, thereby improving the flotation separation efficiency. The annular anode plate 32 and the annular cathode plate 33 both adopt existing technologies. For example, the annular anode plate 32 can be a magnesium alloy annular anode plate of model MD-114, and the annular cathode plate 33 can be an annular LaB6 cathode plate. Silicone rubber gaskets 34 are provided at the overlapping points of each annular anode plate 32 and each annular cathode plate 33. Both the annular anode plate 32 and the annular cathode plate 33 are connected to a voltage regulator 35. The installation of the silicone rubber gaskets 34 can effectively prevent direct contact between adjacent annular anode plates 32 and annular cathode plates 33, thus avoiding short circuits and ensuring the safety and stability of the electrolysis process. The voltage regulator 35 ensures that the output voltage remains stable at all times, thereby ensuring the continuous and stable operation of the electrolysis process and reducing the occurrence of side reactions. The voltage regulator 35 adopts existing technology, such as the CW7800 series voltage regulator. like Figure 4 , 7 As shown in Figure 8, the negative pressure rotary demister 5 includes three track pulleys 50 that can rotate along the upper end of the device body 1 after being driven by an external drive device, three horizontal negative pressure pipes 51 with one end connected to the track pulleys 50 and the other end connected to the foam discharge cylinder 510 located at the center, and a negative pressure pump 52 connected to each horizontal negative pressure pipe 51. The bottom end of each horizontal negative pressure pipe 51 is provided with a negative pressure suction port 511. When the negative pressure rotary demister 5 is in use, the track pulleys 50 are driven to rotate at the upper end of the device body 1 by an external drive device, and each horizontal negative pressure pipe 51 rotates synchronously. At this time, the hydrophobic foam impurities on the water surface are sucked into each horizontal negative pressure pipe 51 through the negative pressure suction port 511 by the negative pressure pump 52, and flow out through the foam discharge cylinder 510, so as to achieve all-round removal of foam inside the device body 1. The foam discharge cylinder 510 is connected to the foam collection box 53 via a connecting pipe. The foam collection box 53 has a transparent observation window 530 on its side wall. The hydrophobic foam impurities flowing out of the foam discharge cylinder 510 are temporarily stored in the foam collection box 53. The transparent observation window 530 allows operators to monitor the foam collection volume in real time and clean it in a timely manner to avoid foam accumulation affecting the normal operation of the device. The inner wall of the main body 1 is provided with an anti-corrosion coating with a thickness of 0.5mm. The anti-corrosion coating is made of epoxy resin. The epoxy resin anti-corrosion coating can form a dense protective film on the inner wall of the main body 1, effectively resisting the erosion of acid and alkali substances and corrosive ions in sewage, and significantly extending the service life of the main body 1.

[0026] Example 2 The difference between this embodiment and Embodiment 1 is that: The inner wall of the main body 1 is provided with a 1mm thick anti-corrosion coating, which is made of epoxy resin. Example 3 This embodiment discloses a multi-physics field coordinated electro-floating water treatment method, based on a multi-physics field coordinated electro-floating water treatment device in Embodiment 1, including the following steps: S1, Settlement Wastewater and flocculant are introduced into the cross-shaped vortex distributor 2 through the L-shaped connecting pipe 20. After being mixed by the reverse vortex spiral blades 23 in each horizontal branch pipe 22, the mixture flows out through each outlet 220 to the bottom of the main body 1 of the device and forms flocs. S2, adsorption Water flows into the electrolysis tank 31 through the annular overflow port 310. Due to the overlapping and interlocking distribution of the annular anode plate 32 and annular cathode plate 33, the water flows in a "down-up-down-up" flow pattern. Simultaneously, the 220V AC power is rectified to 5A DC power by the voltage regulator 35. The electrolysis time is 40 minutes. The annular anode plate 32 and annular cathode plate 33 generate microbubbles such as H2 and O2 through DC electrolysis. These microbubbles encapsulate pollutants, which are then... During the rising process of the bubbles, small particles in the wastewater are carried away and overflow to the upper part of the main body 1 through the overflow channel 311 and overflow pipe 40. They then flow down through the fish scale separator 4. Particles with a size >50μm in the wastewater are intercepted layer by layer by several fish scale sub-plates 421 arranged in a stacked manner, gradually slide to the bottom, and are discharged through the first sewage outlet 11. The water is discharged to the clear water area 43 through the water passage 423 formed between the various fish scale sub-plates 421, and is discharged through the outlet 10. S3, Air Flotation Micro-nano-scale pollutants <50μm, precisely adsorbed by bubbles, float on the top layer of the liquid surface. At this time, the track pulleys 50 are driven by an external drive device to rotate on the upper part of the main body 1 of the device, and the horizontal negative pressure pipes 51 rotate synchronously. Then, the hydrophobic foam impurities on the water surface are sucked into the horizontal negative pressure pipes 51 through the negative pressure suction port 511 by the negative pressure pump 52, and flowed out through the foam discharge cylinder 510. They are then temporarily stored in the foam collection box 53. The transparent observation window 530 allows the operator to monitor the foam collection volume in real time and clean it in a timely manner.

[0027] Example 4 The difference between this embodiment and Embodiment 1 is that: like Figure 9 , 10 As shown, an L-shaped connecting pipe 20 connects to a flocculation premixing tank 24. A reagent addition chamber 240 is located at the center of the flocculation premixing tank 24. The upper end of the reagent addition chamber 240 is connected to a liquid distribution connecting pipe assembly 242 via a liquid pump 241. The liquid distribution connecting pipe assembly 242 includes a main connecting pipe 243, several liquid distribution branch pipes 244 for connecting the main connecting pipe 243 to the flocculation premixing tank 24, and several spraying cylinders 245 located within the flocculation premixing tank 24 and connected one-to-one with the liquid distribution branch pipes 244. The sidewalls of the spraying cylinders 245 are porous. The spraying cylinders 245 are located within the flocculation premixing tank 24 and within the reagent addition chamber 240. The bottom is equipped with a scraper-stirring composite component 25, and the bottom center of the flocculation premixing tank 24 is connected to a sewage discharge tank 246. Before the wastewater enters the main body 1 of the device through the L-shaped connecting pipe 20, it can be introduced into the flocculation premixing tank 24, and flocculants and coagulants can be added to it. The flocculants are alum, aluminum chloride or ferric chloride, and the coagulants are chitosan or anionic polyacrylamide. By mixing the flocculants and coagulants with the wastewater, flocs are formed, which can significantly reduce the turbidity, color and concentration of some pollutants in the wastewater. The liquid pump 241 adopts existing technology, such as the JK-3B type liquid pump. The scraping-mixing composite assembly 25 includes a double-threaded connecting rod 250 horizontally positioned at the bottom of the flocculation premixing tank 24, a rotary motor 251 driving the double-threaded connecting rod 250 to rotate, sliding blocks 252 sleeved on the left and right ends of the double-threaded connecting rod 250 and connected at their upper ends to a vertical mounting frame 2521 via a first hydraulic cylinder 2520, and several mixing rods 253 arranged from top to bottom on the side wall of the vertical mounting frame 2521. When in use, the scraping-mixing composite assembly 25 drives the double-threaded connecting rod 250 to repeatedly rotate in both directions via the rotary motor 251. At this time, the two sliding blocks 252 move along the double-threaded connecting rod 250... The cylinder moves back and forth on the left and right. At this time, due to the connecting action of the first hydraulic cylinder 2520, the corresponding vertical mounting frame 2521 also moves synchronously. The various stirring rods 253 on the vertical mounting frame 2521 fully stir the sewage at different depths to ensure that the agent and sewage are evenly mixed and enhance the flocculation effect. The rotary motor 251 and the first hydraulic cylinder 2520 adopt existing technologies. For example, the rotary motor 251 can be a motor with model A06B-0533-B251, and the first hydraulic cylinder 2520 can be a hydraulic cylinder with model CD2520E80 / 45-500. A fixed scraper 254 is connected to the bottom of the vertical mounting frame 2521. The fixed scraper 254 has mounting openings 255 on both sides. Each mounting opening 255 is connected to an adjusting scraper 257 via a horizontally mounted second hydraulic cylinder 256. When it is necessary to clean the flocculated sediment at the bottom of the flocculation premixing tank 24, the first hydraulic cylinder 2520 moves the vertical mounting frame 2521 downwards along the corresponding sliding block 252 until the fixed scraper 254 contacts the bottom of the flocculation premixing tank 24. At this point, the rotary motor 251 drives the threaded connecting rod 250 to rotate, causing the two sliding blocks 252 to... Moving towards each other, the fixed scraper 254 can scrape the sediment into the middle drain tank 246. The length of the fixed scraper 254 can be adjusted according to the width of the tank bottom. The corresponding adjusting scraper 257 can be driven by the two second hydraulic cylinders 256 to move out of the installation port 255, ensuring that the sediment in each corner of the bottom of the flocculation premixing tank 24 can be effectively cleaned, avoiding sediment accumulation and hardening, which would affect the cleanliness of the inner wall of the flocculation premixing tank 24 and the service life of the equipment. The second hydraulic cylinders 256 adopt existing technology, such as the CD2520E80 / 45-500 hydraulic cylinder.

[0028] Example 5 The difference between this embodiment and embodiment 3 is that: In step S1, before the wastewater enters the main body 1 of the device through the L-shaped connecting pipe 20, it can be introduced into the flocculation premixing tank 24. The flocculant and coagulant aid are pumped into each liquid distribution branch pipe 244 by the liquid pump 241, and evenly sprayed into the flocculation premixing tank 24 through the spraying cylinder 245 at the bottom of each liquid distribution branch pipe 244. At this time, the double threaded connecting rod 250 is driven by the rotary motor 251 to repeatedly rotate forward and backward. At this time, the two sliding blocks 252 move back and forth on the double threaded connecting rod 250. At this time, due to the connecting action of the first hydraulic cylinder 2520, the corresponding vertical mounting frame 2521 also moves synchronously. The sewage at different depths is fully stirred by the stirring rods 253 on the vertical mounting frame 2521. When it is necessary to clean the flocculated sediment at the bottom of the flocculation premixing tank 24, the first hydraulic cylinder 2520 causes the vertical mounting frame 2521 to move downwards along the corresponding sliding block 252 until the fixed scraper 254 contacts the bottom of the flocculation premixing tank 24. At this time, the rotary motor 251 drives the threaded connecting rod 250 to rotate, causing the two sliding blocks 252 to move towards each other. The fixed scraper 254 can then scrape the sediment into the sewage tank 246 located in the middle. The length of the fixed scraper 254 can be adjusted according to the width of the tank bottom. The two second hydraulic cylinders 256 can then drive the corresponding adjusting scraper 257 to move out of the mounting port 255, ensuring that the sediment in each corner of the bottom of the flocculation premixing tank 24 can be effectively cleaned.

[0029] In step S2, the 220V AC power is rectified into 10A DC power by the voltage regulator 35, and the electrolysis time is 30 minutes.

Claims

1. A multi-physics field synergistic electroflotation water treatment device, characterized in that, It includes a device body (1), a cross-shaped vortex water distributor (2) arranged in the device body (1) and distributed from bottom to top, an annular concentric electrode assembly (3), a fish scale type separator (4), and a negative pressure rotary demister (5). The cross-shaped vortex water distributor (2) includes a connecting main pipe (21) that is connected to the outside through an L-shaped connecting pipe (20) at the bottom end, several horizontal branch pipes (22) that are evenly distributed on the outer wall of the connecting main pipe (21) in the circumferential direction, and a reverse vortex spiral blade (23) provided in each of the horizontal branch pipes (22). The free end of the horizontal branch pipe (22) is provided with a water outlet (220). The fish-scale separator (4) includes a mounting plate (41) with an overflow pipe (40) at the center and an outer periphery that is inclined downwards, and a fish-scale separation plate (42) located at the upper end of the mounting plate (41) and used to connect the inner wall of the device body (1) and the outer wall of the overflow pipe (40). The fish-scale separation plate (42) and the mounting plate (41) form a clear water zone (43). The fish-scale separation plate (42) includes a first mounting ring (420) located at the upper end of the mounting buckle plate (41) and several fish-scale sub-plates (421) distributed from top to bottom and arranged in a tile-like manner. The inner walls of each fish-scale sub-plate (421) are connected by several radiating mounting vertical strips (422), and a water passage (423) is formed between two adjacent fish-scale sub-plates (421). The device body (1) has an outlet (10) on its side wall and located in the clear water area (43), a first drain outlet (11) on its side wall and located at the upper end of the first mounting ring (420), and a second drain outlet (12) at the bottom of the device body (1). The L-shaped connecting pipe (20) is connected to the flocculation premixing tank (24). The flocculation premixing tank (24) has a drug addition chamber (240) at its center. The upper end of the drug addition chamber (240) is connected to a liquid distribution connecting pipe assembly (242) via a liquid pump (241). The liquid distribution connecting pipe assembly (242) includes a connecting main pipe (243), several liquid distribution branch pipes (244) for connecting the connecting main pipe (243) and the flocculation premixing tank (24), and several spraying cylinders (245) located in the flocculation premixing tank (24) and connected to the liquid distribution branch pipes (244) one by one. The side wall of the spraying cylinder (245) is a porous structure. A scraping-stirring composite assembly (25) is provided in the flocculation premixing tank (24) and at the bottom of the drug addition chamber (240). A sewage discharge tank (246) is connected to the center of the bottom of the flocculation premixing tank (24). The scraping-stirring composite assembly (25) includes a double-threaded connecting rod (250) located horizontally at the bottom of the flocculation premixing tank (24), a rotary motor (251) that drives the double-threaded connecting rod (250) to rotate, a sliding block (252) sleeved on the left and right ends of the double-threaded connecting rod (250) and connected to a vertical mounting frame (2521) at the upper end via a first hydraulic cylinder (2520), and several stirring rods (253) arranged from top to bottom on the side wall of the vertical mounting frame (2521).

2. The multi-physics field synergistic electroflotation water treatment device according to claim 1, characterized in that, The annular concentric electrode assembly (3) includes an electrolytic tank (31) connected to the inner wall of the main body (1) of the device via a second mounting ring (30) at its upper end, several annular anode plates (32) arranged concentrically at the upper end of the electrolytic tank (31), and several annular cathode plates (33) arranged concentrically at the lower end of the electrolytic tank (31). The annular anode plates (32) and the annular cathode plates (33) are staggered and overlapped. The outer wall of the electrolytic tank (31) is provided with an annular overflow port (310), and the center of the upper end of the electrolytic tank (31) is provided with an overflow channel (311).

3. The multi-physics field synergistic electroflotation water treatment device according to claim 2, characterized in that, A silicone rubber gasket (34) is provided at the overlap of each of the annular anode plates (32) and each of the annular cathode plates (33), and a voltage regulator (35) is connected to both the annular anode plates (32) and the annular cathode plates (33).

4. The multi-physics field synergistic electroflotation water treatment device according to claim 1, characterized in that, The negative pressure rotary demister (5) includes several track pulleys (50) that can rotate along the upper end of the main body (1) of the device after being driven by an external driving device, several horizontal negative pressure pipes (51) with one end connected to the track pulleys (50) and the other end connected to the foam discharge cylinder (510) located at the center, and a negative pressure pump (52) connected to each of the horizontal negative pressure pipes (51). The bottom end of the horizontal negative pressure pipe (51) is provided with a negative pressure suction port (511).

5. The multi-physics field synergistic electroflotation water treatment device according to claim 4, characterized in that, The foam discharge tube (510) is connected to a foam collection box (53) via a connecting pipe. The foam collection box (53) has a transparent observation window (530) on its side wall.

6. The multi-physics field synergistic electroflotation water treatment device according to claim 1, characterized in that, The bottom end of the vertical mounting frame (2521) is connected to a fixed scraper (254). The fixed scraper (254) has mounting ports (255) on its left and right sides. Each mounting port (255) is connected to an adjusting scraper (257) through a horizontally mounted second hydraulic cylinder (256).

7. The multi-physics field synergistic electroflotation water treatment device according to claim 1, characterized in that, The inner wall of the main body (1) of the device is provided with an anti-corrosion coating with a thickness of 0.5-1mm, and the anti-corrosion coating material is epoxy resin.

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