Slope wastewater treatment device based on early crystallization

Abstract

The invention relates to the technical field of side slope wastewater treatment, in particular to a side slope wastewater treatment device based on early crystallization, which comprises a Venturi tube, the Venturi tube comprises a contraction section, a throat part and a diffusion section along the water flow direction, the throat part generates strong shear force and turbulent flow, the middle part of the position of the Venturi tube corresponding to the contraction section is provided with an air entrapping assembly, and the diffusion section is provided with an air inlet; a nucleation leading assembly is arranged on the inner wall, corresponding to the throat part, of the Venturi tube, and a crystallization assembly is arranged on the inner wall, corresponding to the diffusion section, of the Venturi tube. The CO2 is added into the wastewater, the gas-liquid ratio of the CO2 to the wastewater is controlled within the range of 6%-8%, the throat part becomes a core area of an electrolytic reaction by arranging the nucleation leading assembly at the throat part, an electric field is focused on the throat part, and the current density is remarkably improved, so that ion migration and crystallization reaction are intensively catalyzed in a limited space; caCO3 crystal nucleuses are induced to be rapidly generated under the synergistic effect of high shear force of the throat and an electric field, and the effective reaction rate is increased.

Description

Technical Field

[0001] The invention relates to the technical field of slope sewage treatment, in particular to a slope wastewater treatment device based on early crystallization. Background Art

[0002] Usually, the water in the internal drainage system of the slope comes from groundwater, which is mainly composed of calcium and magnesium ions, and also contains some organic matter. These organic matter will react with metal ions to form crystals mainly composed of calcium carbonate. After long-term accumulation, the drainage system will fail. When the drainage system is blocked by crystallization and cannot drain water normally, it will cause the lining pressure to increase, causing the lining to crack, affecting driving safety, and in more serious cases, it will cause the slope to collapse, resulting in irreversible accidents.

[0003] However, in actual use of the existing technology, the existing electrochemical crystal suppression device simply adsorbs metal ions through the cathode and anode. Due to insufficient ion migration rate, a concentration polarization layer is formed on the electrode surface, which greatly reduces the effective reaction rate. Summary of the Invention

[0004] The purpose of the present invention is to provide a slope wastewater treatment device based on early crystallization to solve the problem that metal ions are simply adsorbed by the cathode and anode, and a concentration polarization layer is formed on the electrode surface due to insufficient ion migration rate, which greatly reduces the effective reaction rate.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a slope wastewater treatment device based on early crystallization, comprising:

[0006] A venturi tube comprising a contraction section, a throat, and a diffusion section along the direction of water flow, wherein the throat generates strong shear force and turbulence. An aeration assembly is provided in the middle portion of the venturi tube corresponding to the contraction section to inject CO2 into the interior of the venturi tube and maintain a gas-liquid ratio within a range of 6% to 8%. A nucleation-leading assembly is provided on the inner wall of the venturi tube corresponding to the throat section, and a crystallization assembly is provided on the inner wall of the venturi tube corresponding to the diffusion section.

[0007] The nucleation leading component includes a mounting frame rotatably connected to the throat of the venturi tube, and a cathode needle is fixedly connected to the inner wall of the mounting frame at the corresponding throat position. The cathode needle rotates with the mounting frame while electrolyzing to disturb the water flow, so that the turbulence in the contraction section and the disturbance of the water flow cooperate with the injection of CO2 bubbles to weaken the thickness of the concentration polarization layer, forming carbonate in the throat, directly coupling Ca 2+To generate CaCO3, an anode ring is fixedly connected to the inner wall of the venturi tube corresponding to the throat position, so that the high shear force in the throat and the electric field work together to form a supersaturation gradient concentration area, inducing the rapid generation of CaCO3 crystal nuclei. At the same time, in the high-speed shear zone of the throat, bubbles are torn into smaller microbubbles and induce cavitation. The bubble implosion generates microjets and shock waves, which scour the diffusion layer on the surface of the cathode needle and accelerate the shedding of crystals.

[0008] The crystallization assembly includes an anode column and multiple cathode plates. The cathode plates are arranged obliquely with respect to the water flow direction so that the cathode plates can adsorb crystals falling off the cathode needles. At the same time, the cathode plates are located in the diffusion zone to adsorb metal ions in the wastewater.

[0009] Preferably, the aeration assembly includes an aeration pipe fixedly embedded in the side wall of the venturi tube, and a connecting ring is fixedly connected to the inner wall of the venturi tube corresponding to the position of the aeration pipe. The connecting ring is a hollow structure, and a plurality of air outlet holes are opened at one end of the connecting ring corresponding to the water flow direction. The air outlet holes are connected to the aeration pipe through the interior of the connecting ring.

[0010] Preferably, the inner wall of the venturi tube corresponding to the mounting frame position is fixedly connected to a fixed bracket, and the mounting frame is rotatably connected to the inner wall of the fixed bracket, and the end of the mounting frame away from the cathode needle position is fixedly connected to a turbine, so that when water flows through the turbine, the mounting frame and the cathode needle will be driven to rotate through the turbine, thereby disturbing the water flow and gas, weakening the concentration polarization layer and accelerating the shedding of crystals on the surface of the cathode needle.

[0011] Preferably, a crystallization tube is fixedly embedded in the middle of the venturi tube at a position corresponding to the diffusion section, and the crystallization assembly is located in the crystallization tube. A crystal discharge assembly for discharging crystals is provided inside the crystallization tube. The crystal discharge assembly includes two crystal storage rings rotatably connected to the front and rear ends of the inner wall of the crystallization tube. A connecting tube is fixedly connected to the middle of the two crystal storage rings. The crystal storage rings and the connecting tubes are both hollow structures in the middle, and the interiors of the crystal storage rings and the connecting tubes are connected. A crystal discharge tube is fixedly embedded at one end of the crystal storage ring away from the center of the crystallization tube. A notch is provided at one end of the crystallization tube corresponding to the position of the crystal discharge tube so that the crystal discharge tube can move through the notch and penetrate the crystallization tube. A sealing ring is provided on the surface of the crystal storage ring to form a dynamic seal between the crystallization tube and the crystal storage ring.

[0012] Preferably, the crystallization assembly further comprises a plurality of support rods, the number of the support rods and the cathode plates being the same, and the support rods and the cathode plates being arranged in an annular staggered manner, and the plurality of support rods and the cathode plates forming a circular tubular structure, both ends of the support rods being fixedly connected with connecting rings, one end of one of the connecting rings being fixedly connected with a connecting tube, and the connecting tube being fixedly embedded in one end of the connecting tube, the interior of the connecting tube being connected to the interior of the connecting tube, one end of the other connecting ring being fixedly connected with a fixing cover, and the fixing cover being fixedly connected to one end of the anode column through a bracket, and the anode column being fixedly connected to one end of the opposite surface of the two crystal storage rings.

[0013] Preferably, both ends of the cathode plate are respectively fixedly connected with a first driving column, a guide frame is fixedly embedded in the middle of the connecting ring corresponding to the position of the first driving column, and the first driving column is movably connected to the inner wall of the guide frame, a guide notch is provided on the surface of one end of the first driving column corresponding to the position of the cathode plate, and a rotating gear ring is fixedly connected to the middle of the first driving column, a guide groove equal to the width of the guide notch is provided at one end of the guide frame, and a rotating groove equal to the diameter of the first driving column is provided at the other end of the guide frame, so that the first driving column only moves in a straight line when the guide notch is located inside the guide groove, and when the guide notch is located inside the rotating groove, the first driving column drives the cathode plate to flip.

[0014] Preferably, the surfaces of the fixed cover and the connecting tube are respectively connected to a driving ring through bearing rotation, and the surface of the driving ring is fixedly connected to a driven gear ring, and a driving rotation groove is provided at one end of the driving ring corresponding to the position of the rotating gear ring, and a driving movement groove is provided at one end of the driving ring corresponding to the position of the first driving column, and the inner wall of the driving rotation groove away from the center position is provided with teeth, so that when the rotating gear ring moves to the tooth position of the driving rotation groove, the rotating gear ring drives the cathode plate to flip through the first driving column under the action of the teeth, and the middle part of the fixed cover is connected to the second driving column through a bearing rotation, and the surface of the second driving column is fixedly connected to a conveying blade for scraping crystals off the surface of the cathode plate, and the surfaces of the two adjacent driven gear rings are meshed.

[0015] Preferably, it also includes a driving assembly for driving the cathode plate to flip and the conveying blade to rotate, the driving assembly includes a driving box fixedly connected to one end of the connecting pipe, the middle part of the driving box is rotatably connected to the first driving shaft through a bearing, the second driving column movably penetrates the connecting pipe through a bearing and is rotatably connected to the middle part of the driving box, the end of the second driving column corresponding to the position of the driving box is fixedly connected to the first bevel gear, the end of the first driving shaft corresponding to the position of the first bevel gear is fixedly connected to the second bevel gear, the surface of the second bevel gear is meshed with the surface of the first bevel gear, the end of the crystallization tube corresponding to the position of the driving box is provided with a notch, and the driving box movably penetrates and extends to the outside of the crystallization tube through the notch, the end of the driving box away from the crystallization tube position is fixedly connected to the support plate, and the support plate is rotatably connected to the middle part of one end of the crystallization tube, so that when the support plate is rotated, the support plate drives the crystal storage ring to rotate through the driving box, thereby adjusting the inclination angle of the cathode plate, and the first driving shaft is driven by a right-angle motor.

[0016] Preferably, the bottoms of the anode column and the connecting tube are respectively fixedly connected to support frames, the middle part of the support frame is rotatably connected to a second drive shaft through a bearing, the surfaces of both ends of the second drive shaft are respectively fixedly connected to driving gears, and the surface of the driving gear is engaged with one of the driven gear rings, and the second drive shaft is driven by a waterproof drive motor.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention controls the gas-liquid ratio of CO2 to wastewater within the range of 6% to 8% by adding CO2 to wastewater. By setting a nucleation-leading component in the throat, the throat becomes the core area of the electrolysis reaction, the electric field is focused there, and the current density is significantly improved, thereby concentrating the catalytic ion migration and crystallization reaction in a limited space. The high shear force in the throat and the synergistic effect of the electric field induce the rapid formation of CaCO3 crystal nuclei, thereby improving the effective reaction rate.

[0019] 2. The present invention also has a second driving shaft that drives the driving gear to rotate, so that the driving gear drives the driven gear ring to rotate, and the driven gear ring drives the driving ring to rotate, and the driving ring drives the driving rotating groove and the driving moving groove to rotate, and cooperates with the first driving column, the rotating gear ring and the guide notch, so that the cathode plate moves toward the end away from the second driving column → rotates 180° → moves toward one end of the second driving column, that is, every time the driven gear ring rotates 60°, the cathode plate is flipped and restored, and then as the second driving column drives the conveying blade to rotate, the crystals on the flipped cathode plate are scraped off, thereby achieving the purpose of automatically scraping and collecting the crystals on the cathode plate, and preventing the crystals from flowing with the water to the drainage pipe and causing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The overall structure of the slope wastewater treatment device based on early crystallization of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 2 The overall structure of the slope wastewater treatment device based on early crystallization of the present invention is shown in FIG. Figure 2 ;

[0022] Figure 3 This is a cross-sectional view of the overall structure of the slope wastewater treatment device based on early crystallization of the present invention;

[0023] Figure 4 The present invention is based on the partial explosion of the overall structure of the slope wastewater treatment device based on early crystallization Figure 1 ;

[0024] Figure 5 The present invention is based on the partial explosion of the overall structure of the slope wastewater treatment device based on early crystallization Figure 2 ;

[0025] Figure 6 Schematic diagram of the crystallization component structure of the slope wastewater treatment device based on early crystallization of the present invention Figure 1 ;

[0026] Figure 7 Schematic diagram of the crystallization component structure of the slope wastewater treatment device based on early crystallization of the present invention Figure 2 ;

[0027] Figure 8 This is a cross-sectional view of the crystallization component structure of the slope wastewater treatment device based on early crystallization of the present invention;

[0028] Figure 9 This is a partial exploded view of the crystallization component structure of the slope wastewater treatment device based on early crystallization of the present invention;

[0029] Figure 10 This is a schematic structural diagram of the first driving column and guide frame of the slope wastewater treatment device based on early crystallization of the present invention;

[0030] Figure 11 This is a front view of the driving ring structure of the slope wastewater treatment device based on early crystallization of the present invention;

[0031] Figure 12 This is a schematic diagram of the driving ring structure of the slope wastewater treatment device based on early crystallization of the present invention;

[0032] Figure 13 This is a cross-sectional view of the cathode plate structure of the slope wastewater treatment device based on early crystallization of the present invention.

[0033] In the figure: 1. Venturi tube;

[0034] 201, gas filling pipe; 202, connecting ring; 203, air outlet;

[0035] 301, fixed bracket; 302, mounting frame; 303, cathode needle; 304, anode ring; 305, turbine;

[0036] 4. Crystallization tube;

[0037] 501, crystal storage ring; 502, connecting pipe; 503, crystal row tube;

[0038] 601, support rod; 602, cathode plate; 603, connecting ring; 604, connecting pipe; 605, fixed cover; 606, anode column; 607, first driving column; 608, guide frame; 609, driving ring; 610, driven gear ring; 611, second driving column; 612, conveying blade; 613, guide notch; 614, rotating gear ring; 615, guide groove; 616, rotating groove; 617, driving rotation groove; 618, driving movement groove;

[0039] 701, drive box; 702, first drive shaft; 703, first bevel gear; 704, second bevel gear; 705, support plate; 706, support frame; 707, second drive shaft; 708, driving gear. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] See also Figure 1-13 The present invention provides a technical solution: a slope wastewater treatment device based on early crystallization, comprising:

[0042] The venturi tube 1 includes a contraction section, a throat and a diffusion section along the direction of water flow. The throat generates strong shear force and turbulence. An aeration component is provided in the middle of the venturi tube 1 corresponding to the contraction section to inject CO2 into the interior of the venturi tube 1 and maintain the gas-liquid ratio within the range of 6% to 8%. The inner wall of the venturi tube 1 corresponding to the throat position is provided with a nucleation leading component, and the inner wall of the venturi tube 1 corresponding to the diffusion section position is provided with a crystallization component. The aeration component includes a fixed embedded in the venturi tube. 1. The gas filling pipe 201 on the side wall of the venturi tube 1 is fixedly installed with a connecting ring 202 on the inner wall corresponding to the gas filling pipe 201. The connecting ring 202 is a hollow structure. A plurality of air outlet holes 203 are opened at one end of the connecting ring 202 corresponding to the water flow direction. The air outlet holes 203 are connected to the gas filling pipe 201 through the interior of the connecting ring 202. By injecting CO2 into the interior of the gas filling pipe 201, the CO2 passes through the gas filling pipe 201 and the connecting ring 202 and is finally mixed into the wastewater from the air outlet holes 203.

[0043] The nucleation leading component includes a mounting frame 302 that is rotatably connected to the throat of the venturi tube 1. A cathode needle 303 is fixedly installed on the inner wall of the mounting frame 302 at the corresponding throat position. The cathode needle 303 rotates with the mounting frame 302 while electrolyzing to disturb the water flow, so that the turbulence in the contraction section and the disturbance of the water flow cooperate with the injection of CO2 bubbles to weaken the thickness of the concentration polarization layer, forming carbonate in the throat, directly coupling Ca 2+ To generate CaCO3, an anode ring 304 is fixedly installed on the inner wall of the venturi tube 1 at the position corresponding to the throat, so that the high shear force in the throat and the electric field work together to form a supersaturation gradient concentration area, inducing the rapid generation of CaCO3 crystal nuclei. At the same time, in the high-speed shear area of the throat, the bubbles are torn into smaller microbubbles and induce cavitation. The bubble implosion generates microjets and shock waves, which flush the diffusion layer on the surface of the cathode needle 303 and accelerate the shedding of crystals. A fixed bracket 301 is fixedly installed on the inner wall of the venturi tube 1 at the position corresponding to the mounting bracket 302, and the mounting bracket 302 is rotatably connected to the inner wall of the fixed bracket 301. A turbine 305 is fixedly installed on the end of the mounting bracket 302 away from the cathode needle 303, so that when the water flows through the turbine 305, the mounting bracket 302 and the cathode needle 303 will be driven to rotate by the turbine 305, so as to disturb the water flow and gas, weaken the concentration polarization layer and accelerate the shedding of crystals on the surface of the cathode needle 303.

[0044] The crystallization assembly includes an anode column 606 and multiple cathode plates 602. The cathode plates 602 are arranged at an angle to the direction of water flow so that the cathode plates 602 adsorb crystals that fall off the cathode needles 303. At the same time, the cathode plates 602 are located in the diffusion zone to adsorb metal ions in the wastewater. A crystallization tube 4 is fixedly embedded in the middle of the venturi tube 1 corresponding to the diffusion section, and the crystallization assembly is located in the crystallization tube 4. A crystal discharge assembly for discharging crystals is provided inside the crystallization tube 4. The crystal discharge assembly includes two crystal storage rings 501 that are rotatably connected to the front and rear ends of the inner wall of the crystallization tube 4. A connecting pipe 502 is fixedly installed in the middle of each of the two crystal storage rings 501. The crystal storage rings 501 and the connecting pipe 502 are both hollow structures in the middle, and the interiors of the crystal storage rings 501 and the connecting pipe 502 are connected. A crystal row tube 503 is fixedly embedded in the end of the crystal storage ring 501 away from the center of the crystal tube 4. A notch is opened at the end of the crystal tube 4 corresponding to the position of the crystal row tube 503, so that the crystal row tube 503 can pass through the notch and penetrate the crystal tube 4. A sealing ring is provided on the surface of the crystal storage ring 501 to form a dynamic seal between the crystal tube 4 and the crystal storage ring 501.

[0045] When the above structure is in use, crystals will enter the connecting tube 502 and be stacked inside the crystal storage ring 501 . As the crystals continue to stack, they are eventually discharged from the crystal discharge tube 503 .

[0046] The crystallization assembly also includes a plurality of support rods 601, the number of support rods 601 and cathode plates 602 is the same, and the support rods 601 and cathode plates 602 are arranged in an annular staggered manner, and the plurality of support rods 601 and cathode plates 602 form a circular tubular structure, and both ends of the support rods 601 are fixedly installed with connecting rings 603, one end of one connecting ring 603 is fixedly installed with a connecting pipe 604, and the connecting pipe 604 is fixedly embedded in one end of the connecting pipe 502, and the interior of the connecting pipe 604 is connected to the interior of the connecting pipe 502, and one end of the other connecting ring 603 is fixedly installed with a fixing cover 605, and the fixing cover 605 is fixedly installed on the bracket. One end of the anode column 606 is fixedly mounted on one end of the opposite surface of the two crystal storage rings 501. A first driving column 607 is fixedly mounted on both ends of the cathode plate 602. A guide frame 608 is fixedly embedded in the middle of the connecting ring 603 corresponding to the position of the first driving column 607, and the first driving column 607 is movably connected to the inner wall of the guide frame 608. A guide notch 613 is opened on the surface of one end of the first driving column 607 corresponding to the position of the cathode plate 602, and a rotating gear ring 614 is fixedly mounted in the middle of the first driving column 607. A guide groove 615 with the same width as the guide notch 613 is opened at one end of the guide frame 608. , the other end of the guide frame 608 is provided with a rotation groove 616 of the same diameter as the first driving column 607, so that when the guide notch 613 is located inside the guide groove 615, the first driving column 607 only moves linearly, and when the guide notch 613 is located inside the rotation groove 616, the first driving column 607 drives the cathode plate 602 to flip, and the surfaces of the fixed cover 605 and the connecting pipe 604 are respectively connected to the driving ring 609 through bearings for rotation, and the surface of the driving ring 609 is fixedly installed with a driven gear ring 610, and the end of the driving ring 609 corresponding to the position of the rotating gear ring 614 is provided with a driving rotation groove 617, and the driving ring 609 corresponds to A driving moving groove 618 is provided at one end of the first driving column 607, and a tooth pattern is provided on the inner wall of the driving rotating groove 617 away from the center position, so that when the rotating gear ring 614 moves to the tooth pattern position of the driving rotating groove 617, the rotating gear ring 614 drives the cathode plate 602 to flip through the first driving column 607 when the first driving column 607 is located inside the rotating groove 616. The middle part of the fixed cover 605 is rotatably connected to the second driving column 611 through a bearing. A conveying blade 612 for scraping crystals off the surface of the cathode plate 602 is fixedly installed on the surface of the second driving column 611, and the surfaces of the two adjacent driven gear rings 610 are meshed with each other.

[0047] When the above structure is in use, the second driving column 611 drives the conveying blade 612 to rotate in the circular tubular structure formed by the support rod 601 and the cathode plate 602, and scrapes the crystals on the surface of the cathode plate 602. The crystals are then transported to the connecting pipe 604 by the conveying blade 612. The crystals enter the connecting pipe 502 through the connecting pipe 604 and are stacked inside the crystal storage ring 501. Since the inner diameter of the crystal discharge tube 503 is relatively small, the crystals are squeezed and stacked inside the connecting pipe 502 and the crystal storage ring 501 to form a solid-liquid separation, preventing wastewater from being discharged from the crystal discharge tube 503. As the conveying blade 612 continuously conveys and squeezes, the crystals are finally discharged from the crystal discharge tube 503.

[0048] The driven gear ring 610 drives the driving ring 609 to rotate, and the driving ring 609 drives the driving rotating groove 617 and the driving moving groove 618 to rotate, and cooperates with the first driving column 607 and the rotating gear ring 614, the guide notch 613, the guide frame 608, the rotating groove 616 and the guide groove 615, so that the movement process of the cathode plate 602 is as follows: moving toward the end away from the second driving column 611 → rotating 180° → moving toward one end of the second driving column 611, that is, every time the driven gear ring 610 rotates 60°, the cathode plate 602 is flipped and restored, and then as the second driving column 611 drives the conveying blade 612 to rotate, the crystals on the flipped cathode plate 602 are scraped off, thereby achieving the purpose of automatically scraping and collecting the crystals on the cathode plate 602, and preventing the crystals from flowing into the drainage pipe with the water flow and causing blockage.

[0049] The drive assembly further includes a drive box 701 fixedly mounted on one end of the connecting pipe 502, and the drive box 701 passes through the crystal storage ring 501. The middle part of the drive box 701 is rotatably connected to the first drive shaft 702 through a bearing. The second drive column 611 passes through the connecting pipe 502 and is rotatably connected to the middle part of the drive box 701 through a bearing. The end of the second drive column 611 corresponding to the position of the drive box 701 is fixedly mounted with a first bevel gear 703. The end of the first drive shaft 702 corresponding to the position of the first bevel gear 703 is fixedly mounted with a second bevel gear 704. The surface of the second bevel gear 704 is meshed with the surface of the first bevel gear 703. A notch is provided at one end of the crystal tube 4 corresponding to the position of the drive box 701, and the drive box 7 01 passes through the gap and extends to the outside of the crystallization tube 4. A support plate 705 is fixedly installed at one end of the drive box 701 away from the crystallization tube 4, and the support plate 705 is rotatably connected to the middle part of one end of the crystallization tube 4, so that when the support plate 705 is rotated, the support plate 705 drives the crystal storage ring 501 to rotate through the drive box 701, thereby adjusting the inclination angle of the cathode plate 602. The first drive shaft 702 is driven by a right-angle motor, and the bottom of the anode column 606 and the connecting tube 502 are respectively fixedly installed with support frames 706. The middle part of the support frame 706 is rotatably connected to the second drive shaft 707 through a bearing. The surfaces of both ends of the second drive shaft 707 are respectively fixedly installed with driving gears 708, and the surface of the driving gear 708 is meshed with one of the driven gear rings 610. The second drive shaft 707 is driven by a waterproof drive motor.

[0050] When the above structure is in use, the right-angle motor drives the first drive shaft 702 to rotate, and the first drive shaft 702 drives the second drive column 611 to rotate through the first bevel gear 703 and the second bevel gear 704. Then, the second drive column 611 drives the conveying blade 612 to rotate in the circular tubular structure formed by the support rod 601 and the cathode plate 602, and scrapes off the crystals on the surface of the cathode plate 602;

[0051] The waterproof driving motor drives the second driving shaft 707 to rotate, and the second driving shaft 707 drives the driving gear 708 to rotate. When the driving gear 708 rotates, it drives one of the driven gear rings 610 to rotate.

[0052] Working principle: When in use, the invention injects CO2 into the interior of the gas filling pipe 201, so that the CO2 passes through the gas filling pipe 201 and the connecting ring 202 and is finally mixed into the wastewater from the air outlet 203, and the gas-liquid ratio of CO2 and wastewater is controlled within the range of 6% to 8%. Due to the Venturi effect, the flow velocity of the wastewater increases sharply when passing through the contraction section, and the throat flow velocity can reach 2-3 times that of the inlet. The dynamic design here forces the fluid to redirect, generating strong shear force and turbulence. By arranging a nucleation-dominated component in the throat, the throat becomes the core area of the electrolysis reaction, the electric field is focused here, and the current density is significantly improved, thereby concentrating on catalyzing ion migration and crystallization reactions in a limited space. At the same time, since the CO2 bubbles mix with the high-speed water flow and enter the throat, the bubbles are torn into smaller microbubbles in the high-speed shear zone of the throat, and a cavitation effect is triggered.

[0053] When the nucleation-dominant component is working, the metal ions in the wastewater will crystallize toward the cathode needle 303. Through the cavitation effect of the CO2 bubbles, the CO2 bubbles will implode to generate microjets and shock waves, destroying the diffusion layer on the surface of the cathode needle 303 and accelerating the shedding of crystals.

[0054] It should be noted that although the wastewater in the venturi tube 1 has a relatively fast flow rate in the nucleation-dominant component, the high shear force in the throat and the electric field work together to form a supersaturation gradient concentration area, inducing the rapid generation of CaCO3 crystal nuclei. In the case of low-speed wastewater flow, although the ion residence time is long, the diffusion rate is slow, the concentration polarization is significant, and the actual effective reaction time utilization rate is low. However, in the present invention, by controlling the solid-liquid ratio of CO2 to wastewater within the range of 6% to 8%, and performing an electrolytic crystallization reaction in the throat, the reaction time utilization rate can be effectively improved;

[0055] The nucleation-dominant component mainly utilizes the synergistic effect of high throat shear force and electric field to induce the rapid generation of CaCO3 crystal nuclei, and causes the crystals on the cathode needle 303 to fall off through the cavitation effect. That is, the main function of the nucleation-dominant component is to promote crystallization synthesis. After that, the crystals will flow toward the cathode plate 602 under the action of water flow and be adsorbed on the cathode plate 602, completing the adsorption of the crystals.

[0056] When the inclination angle of the cathode plate 602 needs to be adjusted according to the water flow rate, the support plate 705 is rotated, and the support plate 705 drives the crystal storage ring 501 to rotate through the driving box 701. When the crystal storage ring 501 rotates, the crystal storage ring 501 drives the crystallization assembly to rotate through the connecting pipe 502, and the inclination angle of the cathode plate 602 is adjusted;

[0057] When scraping crystals, the first drive shaft 702 is first driven to rotate by the right-angle motor, and the first drive shaft 702 drives the second drive column 611 to rotate through the first bevel gear 703 and the second bevel gear 704, so that the second drive column 611 drives the conveying blade 612 to rotate in the circular tubular structure formed by the support rod 601 and the cathode plate 602, and scrapes the crystals on the surface of the cathode plate 602. The crystals are then conveyed to the connecting pipe 604 by the conveying blade 612, and enter the connecting pipe 502 through the connecting pipe 604 and are stacked inside the crystal storage ring 501. As the conveying blade 612 continuously conveys and squeezes, the crystals are finally discharged from the crystal discharge pipe 503.

[0058] At this time, the crystals on one end surface of the cathode plate 602 have been scraped off. At this time, the waterproof drive motor drives the second drive shaft 707 to rotate, and the second drive shaft 707 drives the driving gear 708 to rotate. When the driving gear 708 rotates, it drives one of the driven gear rings 610 to rotate. Since the surfaces of the adjacent two driven gear rings 610 are meshed, the multiple driven gear rings 610 rotate synchronously. When the driven gear rings 610 rotate, the driven gear rings 610 drive the driving ring 609. The driving ring 609 rotates, and causes the driving rotation slot 617 and the driving movement slot 618 to rotate. When the driving rotation slot 617 and the driving movement slot 618 rotate, they cooperate with the first driving column 607 and the rotating gear ring 614 to drive the first driving column 607 to move on the inner wall of the guide groove 615. The width of the guide notch 613 is equal to the width of the guide groove 615. This makes it possible for the first driving column 607 to rotate only when the guide notch 613 moves to the rotation slot 616, and when the first driving column When 607 and the guide notch 613 move to the rotation groove 616, at the same time, the rotating gear ring 614 engages with the tooth pattern on the inner wall of the driving rotation groove 617. As the driving ring 609 continues to rotate, the first driving column 607 will rotate 180 degrees, and the first driving column 607 will drive the cathode plate 602 to rotate 180 degrees. Then, under the guidance of the driving moving groove 618 and the driving rotation groove 617, 407 will return to the inner wall of the guide groove 615. The whole process of the cathode plate 602 It manifests itself as moving toward one end away from the second driving column 611 → rotating 180° → moving toward one end of the second driving column 611, that is, every time the driven gear ring 610 rotates 60°, the cathode plate 602 completes the flipping and restoration, and then as the second driving column 611 drives the conveying blade 612 to rotate, the crystals on the flipped cathode plate 602 are scraped off, thereby achieving the purpose of automatically scraping and collecting the crystals on the cathode plate 602, and preventing the crystals from flowing into the drainage pipe with the water flow and causing blockage.

[0059] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A slope wastewater treatment device based on early crystallization, characterized by: include: A venturi tube (1) includes a contraction section, a throat section, and a diffusion section along a water flow direction, wherein the throat section generates strong shear force and turbulence, and an aeration component is provided at the middle portion of the venturi tube (1) corresponding to the contraction section, so as to inject CO2 into the interior of the venturi tube (1) and maintain a gas-liquid ratio within a range of 6% to 8%, a nucleation-leading component is provided at the inner wall of the venturi tube (1) corresponding to the throat section, and a crystallization component is provided at the inner wall of the venturi tube (1) corresponding to the diffusion section; The nucleation leading component comprises a mounting frame (302) rotatably connected to the throat of the venturi tube (1); a cathode needle (303) is fixedly connected to the inner wall of the mounting frame (302) at a position corresponding to the throat; the cathode needle (303) rotates with the mounting frame (302) during electrolysis to disturb the water flow, so that the turbulence in the contraction section and the disturbance of the water flow cooperate with the injection of CO2 bubbles to weaken the thickness of the concentration polarization layer, thereby forming carbonate ions in the throat and directly coupling Ca 2+ CaCO3 is generated, and an anode ring (304) is fixedly connected to the inner wall of the venturi tube (1) at the corresponding throat position, so that the high shear force in the throat and the electric field work together to form a supersaturation gradient concentration area, inducing the rapid generation of CaCO3 crystal nuclei. At the same time, in the high-speed shear area of the throat, bubbles are torn into smaller microbubbles and cavitation is triggered. The bubble implosion generates microjets and shock waves, which flush the diffusion layer on the surface of the cathode needle (303) and accelerate the shedding of crystals; The crystallization assembly includes an anode column (606) and a plurality of cathode plates (602). The cathode plates (602) are arranged obliquely with respect to the direction of water flow so that the cathode plates (602) adsorb crystals detached from the cathode needles (303). At the same time, the cathode plates (602) are located in the diffusion zone for adsorbing metal ions in the wastewater.

2. The slope wastewater treatment device based on early crystallization according to claim 1 is characterized in that: The aeration assembly comprises an aeration pipe (201) fixedly embedded in the side wall of the venturi pipe (1); a connecting ring (202) is fixedly connected to the inner wall of the venturi pipe (1) at a position corresponding to the aeration pipe (201); the connecting ring (202) is a hollow structure; a plurality of air outlet holes (203) are provided at one end of the connecting ring (202) corresponding to the direction of water flow; the air outlet holes (203) are connected to the aeration pipe (201) through the interior of the connecting ring (202).

3. The slope wastewater treatment device based on early crystallization according to claim 2 is characterized in that: The inner wall of the venturi tube (1) corresponding to the position of the mounting frame (302) is fixedly connected to a fixed bracket (301), and the mounting frame (302) is rotatably connected to the inner wall of the fixed bracket (301). One end of the mounting frame (302) away from the position of the cathode needle (303) is fixedly connected to a turbine (305), so that when water flows through the turbine (305), the turbine (305) drives the mounting frame (302) and the cathode needle (303) to rotate, thereby disturbing the water flow and gas, weakening the concentration polarization layer, and accelerating the shedding of crystals on the surface of the cathode needle (303).

4. The slope wastewater treatment device based on early crystallization according to claim 3 is characterized in that: A crystallization tube (4) is fixedly embedded in the middle of the venturi tube (1) at a position corresponding to the diffusion section, and a crystallization assembly is located in the crystallization tube (4). A crystal discharge assembly for discharging crystals is provided inside the crystallization tube (4). The crystal discharge assembly comprises two crystal storage rings (501) rotatably connected to the front and rear ends of the inner wall of the crystallization tube (4). A connecting tube (502) is fixedly connected to the middle of the two crystal storage rings (501). The crystal storage rings (501) and the connecting tube (502) are both hollow in the middle. The invention relates to a structure in which the crystal storage ring (501) and the connecting tube (502) are connected to each other. The end of the crystal storage ring (501) away from the center of the crystal tube (4) is fixedly embedded with a crystal row tube (503). The end of the crystal tube (4) corresponding to the position of the crystal row tube (503) is provided with a notch so that the crystal row tube (503) can movably pass through the crystal tube (4) through the notch. The surface of the crystal storage ring (501) is provided with a sealing ring so that a dynamic seal is formed between the crystal tube (4) and the crystal storage ring (501).

5. The slope wastewater treatment device based on early crystallization according to claim 4 is characterized in that: The crystallization assembly further comprises a plurality of support rods (601), the number of the support rods (601) and the cathode plates (602) being the same, and the support rods (601) and the cathode plates (602) being arranged in an annular staggered manner, and the plurality of support rods (601) and the cathode plates (602) forming a circular tubular structure, both ends of the support rods (601) being fixedly connected with connecting rings (603), one end of one of the connecting rings (603) being fixedly connected with a connecting pipe (604), and the connecting pipe (604) being fixedly embedded in one end of the connecting pipe (502), the interior of the connecting pipe (604) being connected with the interior of the connecting pipe (502), one end of another connecting ring (603) being fixedly connected with a fixing cover (605), and the fixing cover (605) being fixedly connected to one end of the anode column (606) through a bracket, and the anode column (606) being fixedly connected to one end of the opposite surface of the two crystal storage rings (501).

6. The device for treating slope wastewater based on early crystallization according to claim 5, characterized in that: Both ends of the cathode plate (602) are fixedly connected to a first driving column (607), a guide frame (608) is fixedly embedded in the middle of the connecting ring (603) corresponding to the position of the first driving column (607), and the first driving column (607) is movably connected to the inner wall of the guide frame (608), a guide notch (613) is provided on the surface of one end of the first driving column (607) corresponding to the position of the cathode plate (602), and a rotating gear ring (614) is fixedly connected to the middle of the first driving column (607). One end of the guide frame (608) is provided with a guide groove (615) having the same width as the guide notch (613), and the other end of the guide frame (608) is provided with a rotation groove (616) having the same diameter as the first driving column (607), so that when the guide notch (613) is located inside the guide groove (615), the first driving column (607) only moves in a straight line, and when the guide notch (613) is located inside the rotation groove (616), the first driving column (607) drives the cathode plate (602) to flip.

7. The device for treating slope wastewater based on early crystallization according to claim 6, characterized in that: The surfaces of the fixed cover (605) and the connecting pipe (604) are respectively connected to a driving ring (609) through bearings. The surface of the driving ring (609) is fixedly connected to a driven gear ring (610). The end of the driving ring (609) corresponding to the position of the rotating gear ring (614) is provided with a driving rotation groove (617). The end of the driving ring (609) corresponding to the position of the first driving column (607) is provided with a driving movement groove (618). The inner wall of the driving rotation groove (617) is provided away from the center position. There are teeth, so that when the rotating gear ring (614) moves to the tooth position of the driving rotating groove (617), the rotating gear ring (614) drives the cathode plate (602) to flip through the first driving column (607) under the action of the teeth, and the middle part of the fixed cover (605) is rotatably connected to the second driving column (611) through the bearing, and the surface of the second driving column (611) is fixedly connected to a conveying blade (612) for scraping crystals on the surface of the cathode plate (602), and the surfaces of the two adjacent driven gear rings (610) are meshed.

8. The device for treating slope wastewater based on early crystallization according to claim 7, characterized in that: The invention also includes a driving assembly for driving the cathode plate (602) to flip and the conveying blade (612) to rotate, wherein the driving assembly includes a driving box (701) fixedly connected to one end of the connecting pipe (502), the middle part of the driving box (701) is rotatably connected to the first driving shaft (702) through a bearing, the second driving column (611) is movably passed through the connecting pipe (502) through a bearing and is rotatably connected to the middle part of the driving box (701), the end of the second driving column (611) corresponding to the position of the driving box (701) is fixedly connected to the first bevel gear (703), the end of the first driving shaft (702) corresponding to the position of the first bevel gear (703) is fixedly connected to the second bevel gear (704), and the driving assembly includes a driving box (701) and ... The surface of the second bevel gear (704) is meshed with the surface of the first bevel gear (703); a notch is provided at one end of the crystallization tube (4) corresponding to the position of the drive box (701); and the drive box (701) is movable through the notch and extends to the outside of the crystallization tube (4); an end of the drive box (701) away from the position of the crystallization tube (4) is fixedly connected to a support plate (705), and the support plate (705) is rotatably connected to the middle part of one end of the crystallization tube (4), so that when the support plate (705) is rotated, the support plate (705) drives the crystal storage ring (501) to rotate through the drive box (701), thereby adjusting the inclination angle of the cathode plate (602); and the first drive shaft (702) is driven by a right-angle motor.

9. The device for treating slope wastewater based on early crystallization according to claim 8, characterized in that: The bottoms of the anode column (606) and the connecting pipe (502) are respectively fixedly connected to a support frame (706); the middle of the support frame (706) is rotatably connected to a second drive shaft (707) via a bearing; the surfaces of both ends of the second drive shaft (707) are respectively fixedly connected to a driving gear (708), and the surface of the driving gear (708) is meshed with one of the driven gear rings (610); and the second drive shaft (707) is driven by a waterproof drive motor.

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