Slope wastewater treatment device based on early crystallization

Abstract

The present application relates to the technical field of slope sewage treatment, in particular to a slope wastewater treatment device based on early crystallization, comprising: a Venturi tube, the Venturi tube comprises a converging section, a throat and a diffuser section along the water flow direction, the throat generates strong shear force and turbulent flow, the middle part of the corresponding converging section position of the Venturi tube is provided with an aeration assembly, the inner wall of the corresponding throat position of the Venturi tube is provided with a nucleation dominant assembly, and the inner wall of the corresponding diffuser section position of the Venturi tube is provided with a crystallization assembly. The present application adds CO2 into the wastewater, controls the gas-liquid ratio of CO2 and wastewater within the range of 6% to 8%, sets the nucleation dominant assembly in the throat, so that the throat becomes the core area of electrolytic reaction, the electric field focuses on it, the current density is significantly improved, thereby the catalytic ion migration and crystallization reaction are concentrated in the limited space, the high shear force of the throat and the electric field synergistically induce the rapid generation of CaCO3 crystal nucleus, and the effective reaction rate is improved.

Description

TECHNICAL FIELD

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

[0002] Generally, the water of the internal drainage system of the slope is derived from groundwater, wherein calcium and magnesium ions are mainly contained, and some organic matters are also contained, which can react with metal ions to form crystalline bodies mainly composed of calcium carbonate. After long-term accumulation, the drainage system can be disabled. When the drainage system is blocked due to crystallization and cannot normally drain water, the lining pressure can be increased, the lining can be cracked, the driving safety can be affected, and in a more serious case, the slope can be collapsed, causing irreparable accidents.

[0003] However, in actual use, the existing electrochemical crystallization inhibition device only simply adsorbs metal ions by cathode and anode, and a concentration polarization layer is formed on the surface of the electrode due to insufficient ion migration rate, which greatly reduces the effective reaction rate. SUMMARY

[0004] The present application provides a slope wastewater treatment device based on early crystallization to solve the problem that only simple adsorption of metal ions by cathode and anode can form a concentration polarization layer on the surface of the electrode due to insufficient ion migration rate, which greatly reduces the effective reaction rate.

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

[0006] The Venturi tube comprises a contraction section, a throat section and a diffusion section along the water flow direction, the throat section generates strong shear force and turbulent flow, the middle part of the Venturi tube corresponding to the contraction section is provided with an air injection assembly to inject CO2 into the interior of the Venturi tube and maintain the gas-liquid ratio in the range of 6% to 8%, the inner wall of the Venturi tube corresponding to the throat section is provided with a nucleation dominant assembly, and the inner wall of the Venturi tube corresponding to the diffusion section is provided with a crystallization assembly;

[0007] The nucleation dominant assembly comprises a mounting bracket rotatably connected to the throat section of the Venturi tube, and the inner wall of the mounting bracket corresponding to the throat section is fixedly connected with a cathode needle. The cathode needle is electrolyzed while rotating with the mounting bracket to disturb the water flow, so that the thickness of the concentration polarization layer is weakened by the turbulent flow in the contraction section and the disturbance of the water flow in cooperation with the injection of CO2 bubbles, and carbonate is formed in the throat section to directly couple 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, the driving assembly for driving the cathode plate overturning and the conveying blade rotating comprises a driving box fixedly connected to one end of the communicating pipe, a first driving shaft rotatably connected to the middle part of the driving box through a bearing, a second driving column movably penetrating the communicating pipe through a bearing and rotatably connected to the middle part of the driving box, a first bevel gear fixedly connected to one end of the second driving column corresponding to the position of the driving box, a second bevel gear fixedly connected to one end of the first driving shaft corresponding to the position of the first bevel gear, and the surface of the second bevel gear is engaged with the surface of the first bevel gear.

[0016] Preferably, the bottom of the anode column and the communicating pipe is fixedly connected with a support frame respectively, the middle part of the support frame is rotatably connected with a second driving shaft through a bearing, the surface of both ends of the second driving shaft is fixedly connected with a driving gear respectively, and the surface of the driving gear is engaged with one of the driven gear rings.

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

[0018] 1. By adding CO2 into the wastewater, controlling the gas-liquid ratio of CO2 and wastewater within the range of 6% to 8%, and setting a nucleation dominant assembly at the throat, the throat becomes the core area of the electrolysis reaction, the electric field focuses on it, and the current density is significantly improved, so as to concentrate the catalytic ion migration and crystallization reaction in a limited space, induce the rapid generation of CaCO3 crystal nucleus by the synergistic effect of high shear force and electric field at the throat, and improve the effective reaction rate.

[0019] 2. The second driving shaft drives the driving gear to rotate, the driving gear drives the driven gear ring to rotate, 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, so that the cathode plate moves away from the second driving column, rotates 180°, and moves to the end of the second driving column, that is, the driven gear ring rotates 60°, the cathode plate is overturned and restored, and then the second driving column drives the conveying blade to rotate, so that the crystal on the overturned cathode plate is scraped off, thereby realizing the purpose of automatically scraping and collecting the crystal on the cathode plate, and preventing the crystal from flowing into the drain pipe and causing blockage. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Overall structure of the slope wastewater treatment device based on early crystallization of the present application Figure 1 ;

[0021] Figure 2 Overall structure of the slope wastewater treatment device based on early crystallization of the present application Figure 2 ;

[0022] Figure 3 Cross-sectional view of the overall structure of the slope wastewater treatment device based on early crystallization of the present application

[0023] Figure 4 Partial explosion of the overall structure of the slope wastewater treatment device based on early crystallization of the present application Figure 1 ;

[0024] Figure 5 Partial explosion of the overall structure of the slope wastewater treatment device based on early crystallization of the present application Figure 2 ;

[0025] Figure 6 Structure diagram of the crystallization assembly of the slope wastewater treatment device based on early crystallization of the present application Figure 1 ;

[0026] Figure 7 Structure diagram of the crystallization assembly of the slope wastewater treatment device based on early crystallization of the present application Figure 2 ;

[0027] Figure 8 Cross-sectional view of the crystallization assembly structure of the slope wastewater treatment device based on early crystallization of the present application

[0028] Figure 9 Partial explosion diagram of the crystallization assembly structure of the slope wastewater treatment device based on early crystallization of the present application

[0029] Figure 10 Structure diagram of the first driving column and guide frame of the slope wastewater treatment device based on early crystallization of the present application

[0030] Figure 11 Front view of the driving ring structure of the slope wastewater treatment device based on early crystallization of the present application

[0031] Figure 12 Structure diagram of the driving ring of the slope wastewater treatment device based on early crystallization of the present application

[0032] Figure 13 Cross-sectional view of the cathode plate structure of the slope wastewater treatment device based on early crystallization of the present application

[0033] In the figure: 1, Venturi tube

[0034] 201, gas inlet pipe; 202, communication ring; 203, gas outlet hole;

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

[0036] 4, crystallization tube;

[0037] 501, crystal storage ring; 502, communication pipe; 503, crystal discharge tube;

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

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

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0041] Please refer to Figure 1-13 The present application 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 comprises the anode column 606 and a plurality of cathode plates 602, the cathode plates 602 are arranged obliquely to the water flow direction, so that the cathode plates 602 adsorb the crystals falling off the cathode needle 303, and the cathode plates 602 are located in the diffusion zone for adsorbing metal ions in the waste water, the crystallization tube 4 is fixedly embedded in the middle of the Venturi tube 1 corresponding to the position of the diffusion section, and the crystallization assembly is located in the crystallization tube 4, the inside of the crystallization tube 4 is provided with a crystal discharge assembly for discharging the crystals, the crystal discharge assembly comprises two crystal storage rings 501 which are rotationally connected to the front and rear ends of the inner wall of the crystallization tube 4, the middle of each of the two crystal storage rings 501 is fixedly installed with a communication pipe 502, the crystal storage ring 501 and the communication pipe 502 are both hollow structures in the middle, and the inside of the crystal storage ring 501 and the communication pipe 502 are communicated, one end of the crystal storage ring 501 away from the center of the crystallization tube 4 is fixedly embedded with a crystal discharge pipe 503, one end of the crystallization tube 4 corresponding to the position of the crystal discharge pipe 503 is provided with a gap, so that the crystal discharge pipe 503 passes through the gap and movably penetrates the crystallization tube 4, and the surface of the crystal storage ring 501 is provided with a sealing ring, so that a dynamic seal is formed between the crystallization tube 4 and the crystal storage ring 501.

[0045] In use, the crystals enter the inside of the communication pipe 502 and are stacked in the inside of the crystal storage ring 501, and finally the crystals are discharged from the crystal discharge pipe 503 as they are continuously stacked.

[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] The above structure is used, the second drive column 611 drive conveying blade 612 in the pipe type structure formed by support rod 601 and cathode plate 602 rotation, and the surface of the cathode plate 602 crystal scraping, and by conveying blade 612 to the connecting pipe 604 conveying, crystal through the connecting pipe 604 into the communication pipe 502 inside, and stack in the inside of the crystal storage ring 501, because the crystal discharge pipe 503 inner diameter is smaller, crystal in the communication pipe 502 and crystal storage ring 501 inside extrusion stack forming solid-liquid separation, prevent wastewater from the crystal discharge pipe 503 discharge, with conveying blade 612 continuously conveying extrusion, so that the crystal is finally discharged from the crystal discharge pipe 503;

[0048] Through the drive ring 610 drive drive ring 609 rotation, and make the drive ring 609 drive drive rotary groove 617 and drive moving groove 618 rotation, cooperate with the first drive column 607 and rotary gear ring 614, guide notch 613, guide frame 608, rotary groove 616 and guide groove 615, so that will drive the movement process of cathode plate 602 is, to move away from the second drive column 611 one end→180° rotation→to the second drive column 611 one end, that is, the driven gear ring 610 every 60° rotation, cathode plate 602 is completed turnover and recovery, then with the second drive column 611 drive conveying blade 612 rotation, so that the turnover of cathode plate 602 on the crystal is scraped, so as to realize the purpose of automatic scraping and collecting cathode plate 602 crystal, prevent crystal with water flow to the drain pipe cause blockage.

[0049] The driving assembly for driving the cathode plate 602 to flip and the conveying blade 612 to rotate includes a driving box 701 fixedly installed at one end of the communicating pipe 502 and penetrating the storage crystal ring 501, a first driving shaft 702 rotatably connected to the middle part of the driving box 701 through a bearing, the second driving column 611 movably penetrating the communicating pipe 502 through a bearing and rotatably connected to the middle part of the driving box 701, the first bevel gear 703 fixedly installed at one end of the second driving column 611 corresponding to the position of the driving box 701, the second bevel gear 704 fixedly installed at one end of the first driving shaft 702 corresponding to the position of the first bevel gear 703, the surface of the second bevel gear 704 engaged with the surface of the first bevel gear 703, the notch provided at one end of the crystallization pipe 4 corresponding to the position of the driving box 701, the driving box 701 movably penetrating the notch and extending to the outside of the crystallization pipe 4, the support plate 705 fixedly installed at one end of the driving box 701 away from the crystallization pipe 4 and rotatably connected to the middle part of one end of the crystallization pipe 4, so that when the support plate 705 is rotated, the support plate 705 drives the storage crystal ring 501 to rotate through the driving box 701, thereby adjusting the inclination angle of the cathode plate 602, the first driving shaft 702 driven by a right-angle motor, the support frame 706 fixedly installed at the bottom of the anode column 606 and the communicating pipe 502 respectively, the second driving shaft 707 rotatably connected to the middle part of the support frame 706 through a bearing, the driving gear 708 fixedly installed at the surfaces of both ends of the second driving shaft 707, and the surface of the driving gear 708 engaged with one of the driven gear rings 610, and the second driving shaft 707 driven by a waterproof driving motor.

[0050] In use, the right-angle motor drives the first driving shaft 702 to rotate, and the first driving shaft 702 drives the second driving column 611 to rotate through the cooperation of the first bevel gear 703 and the second bevel gear 704, so that the second driving column 611 drives the conveying blade 612 to rotate in the circular pipe structure formed by the support rod 601 and the cathode plate 602, and the crystals on the surface of the cathode plate 602 are scraped off.

[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, and when the driving gear 708 rotates, one of the driven gear rings 610 is driven to rotate.

[0052] Working principle: in use, the application injects CO2 into the inside of the aeration pipe 201, so that CO2 is mixed into the wastewater from the gas outlet 203 through the aeration pipe 201 and the communication ring 202, and the gas-liquid ratio of CO2 and wastewater is controlled within the range of 6% to 8%, wherein due to the Venturi effect, the flow rate of the wastewater increases sharply when passing through the contraction section, and the flow rate at the throat can reach 2-3 times that of the inlet, the kinetic design at this position forces the fluid to be redirected, generating strong shear force and turbulence, by setting the nucleation dominant assembly at 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, so as to concentrate the catalytic ion migration and crystallization reaction in a limited space, and at the same time, due to the mixing of CO2 bubbles and high-speed water flow into the throat, the bubbles are torn into smaller micro-bubbles in the high-speed shear zone of the throat, and the cavitation effect is induced;

[0053] When the nucleation dominant assembly works, the metal ions in the wastewater will crystallize to the cathode needle 303, and through the cavitation effect of the CO2 bubbles, the micro-jet and shock wave generated by the explosion of the CO2 bubbles will destroy the diffusion layer on the surface of the cathode needle 303 and accelerate the crystal shedding;

[0054] It should be noted that although the wastewater in the Venturi tube 1 flows faster in the nucleation dominant assembly, the high shear force at the throat and the electric field work together to form a supersaturation gradient concentration area, which induces the rapid generation of CaCO3 crystal nucleus, and in the case of low-speed wastewater flow, although the ion residence time is longer, the diffusion speed is slow, the concentration difference polarization is significant, and the actual effective reaction time utilization rate is low, however, by controlling the solid-liquid ratio of CO2 and wastewater within the range of 6% to 8% and performing electrolytic crystallization reaction at the throat, the reaction time utilization rate can be effectively improved;

[0055] The nucleation dominant assembly mainly induces the rapid generation of CaCO3 crystal nucleus by utilizing the high shear force at the throat and the electric field, and makes the crystal on the cathode needle 303 fall off through the cavitation effect, that is, the main function of the nucleation dominant assembly is to promote the synthesis of crystallization, and then the crystallization flows to the cathode plate 602 under the action of water flow and is adsorbed on the cathode plate 602, completing the adsorption of crystallization;

[0056] When it is necessary to adjust the inclination angle of the cathode plate 602 according to the flow rate of the water flow, at this time, the support plate 705 is rotated, and the support plate 705 drives the crystal storage ring 501 to rotate through the drive box 701, and when the crystal storage ring 501 rotates, the crystal storage ring 501 drives the crystallization assembly to rotate through the communication pipe 502, and adjusts the inclination angle of the cathode plate 602;

[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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