A device for treating calcium hydrogen phosphate wastewater

Abstract

This invention discloses a dicalcium phosphate wastewater treatment device, relating to the field of wastewater treatment technology. The device includes two sets of rotating discs located within a treatment container. Each set of discs has at least one set of opening and closing plates arranged around its circumference, forming an openable and closable valve plate. A drug supply pipeline is provided with a drug supply component arranged in parallel along its pipeline direction. The driving component is used to drive the alternating opening and closing and lifting and lowering movement of the two sets of valve plates. By utilizing the opening and closing characteristics of the two sets of valve plates, dicalcium phosphate wastewater generated at different reaction stages is treated by stratified dosing and mixing. This facilitates the quantitative addition of reagents based on the content of harmful substances in the wastewater. Furthermore, it features continuous water injection and simultaneous drug addition, enabling the addition of reagents while continuously injecting wastewater, reducing wastewater treatment time and significantly improving the accuracy of reagent mixing.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a dicalcium phosphate wastewater treatment device. Background Technology

[0002] Feed-grade dicalcium phosphate (feed calcium) is mainly produced using the sulfuric acid wet process, which involves reaction, purification, and crystallization in an aqueous solution throughout the entire process. The reaction process consumes a large amount of water, and the reaction separation process generates mother liquor and wash water (dicalcium phosphate wastewater) containing phosphorus, fluorine, and calcium. Dicalcium phosphate wastewater contains high concentrations of phosphorus, calcium, fluorine, heavy metals, and chloride ions, and cannot be discharged directly. It must be treated before discharge. The mainstream treatment process for dicalcium phosphate wastewater usually adopts the chemical precipitation-coagulation process (process: wastewater → premixing and adjusting pH → aeration → sedimentation → pH adjustment → reuse / discharge).

[0003] For example, Chinese patent CN102001771A discloses a method for treating dicalcium phosphate wastewater. The process flow is as follows: wastewater generated from the production of feed-grade dicalcium phosphate is sent to a premixing tank, and ferrous sulfate powder and lime slurry are added to adjust the pH value. Then, the premixed wastewater overflows into an aeration tank for aeration for 30-60 minutes. The aerated wastewater is then sent to a sedimentation tank for sedimentation treatment. The clarified water is then sent to a pH return adjustment tank to obtain clean water that can be recycled by the system.

[0004] Because the dicalcium phosphate wastewater produced at each reaction stage has different reaction effects and discharge volumes, and the content of harmful ions (heavy metal ions), pH value, etc., is in a state of dynamic fluctuation, when the dicalcium phosphate wastewater is collected and treated (collected to reaction tanks, reaction vessels, etc.), it is often impossible to effectively calculate the content of heavy metal ions, pH value, etc. in the wastewater. This can easily lead to overdosing of reagents (high cost, strong alkali scaling) or underdosing (incomplete reaction treatment). Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a dicalcium phosphate wastewater treatment device, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dicalcium phosphate wastewater treatment device, comprising a treatment container for holding wastewater, and further comprising: two sets of turntables located within the treatment container, wherein each set of turntables has at least one set of opening and closing plates arranged around its circumference, the turntables and opening and closing plates forming an openable and closable valve plate, the valve plate being capable of moving up and down along the treatment container; and at least one set of chemical supply pipes arranged around the circumference of the treatment container, wherein the chemical supply pipes have chemical supply components arranged in parallel along their pipeline direction, the chemical supply components... The components are located on the moving path of the valve plates; a premixing chamber is formed between the two sets of valve plates and the inner wall of the treatment container, and a water storage chamber and a treatment chamber are formed sequentially at the upper and lower ends of the treatment container through the two sets of valve plates. The upper and lower sets of valve plates are controlled to open and close alternately, so that the wastewater is transferred from the water storage chamber to the premixing chamber and mixed with the reagent before being discharged into the treatment chamber. During the discharge process, the two sets of valve plates are controlled to move upward to provide space for the premixing chamber and the treatment chamber to treat wastewater for the next time; the drive component is used to drive the alternating opening and closing and the lifting and lowering movement of the two sets of valve plates.

[0007] Furthermore, the drug supply assembly includes a one-way valve installed on the drug supply pipeline. The one-way valve has a linear guide rod inside, with a second spring at one end and a contact at the other end. The linear guide rod also has a one-way valve core along its axial direction to block the valve port of the one-way valve. A set of valve plates is provided with radially arranged stirring paddles and a point-contact pressure rod at one end near the contact. The drive assembly is also used to drive the valve plates to rotate and move, causing the point-contact pressure rod to drive the contact to move and open the valve port of the drug supply assembly.

[0008] Furthermore, it also includes: a second housing, disposed between the two sets of valve plates, wherein the second housing has an annular guide rod inside, and two sets of first springs are sleeved on the annular guide rod around its circumference, and a slide is sleeved on the side offset from the first springs, and a fixed platform is provided on each of the two sets of slides; the first housing is disposed in the middle of the turntable and fixedly connected to the second housing, wherein a rotating ring is rotatably installed inside the turntable, and the rotating ring is fixedly connected to the opening and closing plate; the two sets of rotating rings are respectively fixedly connected to the two sets of fixed platforms.

[0009] Furthermore, it also includes: a first bushing, fixedly connected to one set of fixed platforms; a second bushing, fixedly connected to another set of fixed platforms, wherein a closed-loop track is formed on the first bushing and the second bushing; a lifting shaft, arranged on the moving path of the closed-loop track, wherein the lifting shaft is axially provided with a sliding column, which can slide along the closed-loop track to drive the two sets of valve plates to open and close alternately.

[0010] Furthermore, the closed-loop track includes: a first helical track, formed on a first bushing; and a second helical track, formed on a second bushing, which coincides with the trajectory path of the rotated first helical track, allowing the sliding column to transition from the first helical track to the second helical track. The second helical track has an arc-shaped track at its top and a second linear track at its other end. The first helical track also has a first linear track at its bottom, which coincides with the trajectory path of the second linear track, allowing the sliding column to transition from the second linear track to the first linear track and return to its original position within the first helical track.

[0011] Furthermore, a wedge block is provided on the trajectory path of the second linear track near the bottom of the second spiral track, and an elastic piece is provided on one side of the wedge block. This guides the slide column into the second spiral track during the initial transition from the first spiral track to the second spiral track, and pushes the wedge block to make way during the slide column's reset sliding along the second linear track, so that the slide column can transition to the first linear track.

[0012] Furthermore, the drive assembly includes: a support frame disposed at the upper port of the processing container, a support shaft disposed in the middle of the support frame, wherein the support shaft is located above the movement path of the valve plate, and the support shaft is provided with second gears arranged in parallel along its axial direction, the number of second gears being the same as that of the drug supply assembly; a first electric rod is disposed on the support frame, and a second rack is disposed at the telescopic end of the first electric rod, the second rack meshing with the second gear for driving the support shaft to rotate, thereby causing the support shaft to drive the stirring paddle on the valve plate to rotate.

[0013] Furthermore, the drive assembly further includes: a first rack, disposed on one side of the support shaft, wherein the first rack has at least one set of bushings along its axial direction, and the bushings are sleeved on the support shaft; the support frame is also provided with a reduction motor, and a first gear is provided on the output shaft of the reduction motor, the first gear meshing with the first rack, for driving the support shaft to move up and down, so that the support shaft drives the valve plate to move up and down and the second gear passes through the second rack in sequence.

[0014] Furthermore, the drive assembly also includes a second electric rod disposed at the top of the first rack. The telescopic end of the second electric rod is connected to the lifting shaft and is used to drive the slide column to slide along the closed-loop track, so that the two sets of valve plates open and close alternately.

[0015] Furthermore, it also includes an aeration coil installed at the bottom of the treatment container and an exhaust duct installed above the drug supply assembly, so that the two sets of valve plates can be moved above the exhaust duct to direct the gas discharged from the aeration coil.

[0016] The present invention has the following beneficial effects: (1) The dicalcium phosphate wastewater treatment device utilizes the opening and closing characteristics of two sets of valve plates to perform stratified chemical mixing treatment of dicalcium phosphate wastewater generated in different reaction stages. On the one hand, it is convenient to quantitatively add the reagent according to the content of harmful substances in the wastewater. On the other hand, it has the characteristics of continuous water injection and synchronous chemical addition, which can complete the reagent addition work while continuously injecting wastewater, reducing the wastewater treatment time and greatly improving the reagent mixing accuracy.

[0017] (2) When the two sets of valve plates are closed, the dicalcium phosphate wastewater treatment device forms a premixing chamber, which allows the wastewater to complete the precise addition and mixing of the reagents in the premixing chamber. When the two sets of valve plates are opened and closed alternately, the mixed wastewater is transferred to the lower treatment chamber, and the wastewater continuously injected into the upper storage chamber is transferred to the premixing chamber again. Then, according to this state, based on the content of harmful substances in the wastewater, the wastewater is continuously injected and the synchronous dosing and mixing is completed in a segmented manner. The reagent ratio is more accurate, and the synchronous mixing work can be completed during the continuous injection of wastewater, saving the reaction treatment time.

[0018] (3) The dicalcium phosphate wastewater treatment device utilizes the opening and closing characteristics of two sets of valve plates to perform stratified chemical treatment of wastewater. At the same time, it utilizes the rotation characteristics of the two sets of valve plates to complete the automatic dosing of the agent and accurately mix the agent with the wastewater in the stratification.

[0019] (4) The dicalcium phosphate wastewater treatment device utilizes the opening and closing characteristics of the valve plate. When the wastewater and reagent are mixed and then subjected to subsequent reaction treatment, the valve plate can also act as a cover to guide the irritating gas generated by the reaction in a closed manner, so as to prevent the reaction gas from spreading out and polluting the surrounding working environment.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the first structure of the present invention; Figure 2 This is a schematic diagram of the second structure of the present invention; Figure 3 This is a partial cross-sectional view of the present invention; Figure 4 This is a planar schematic diagram of the present invention; Figure 5 This is a schematic diagram of the assembly of the two sets of valve plates in this invention; Figure 6 This is an exploded view of the assembly of the two sets of valve plates in this invention; Figure 7 This is a schematic diagram of the structure of the turntable and the opening / closing plate in this invention; Figure 8 This is a schematic diagram of the alternating opening and closing drive of the two sets of valve plates in this invention; Figure 9 This is an exploded view of the alternating opening and closing drive of the two sets of valve plates in this invention; Figure 10 This is a schematic diagram of the arrangement of the closed-loop track in this invention; Figure 11 (a) and (b) in the figure are the opening and closing state changes of the bottom valve plate and the top valve plate in the present invention, respectively; Figure 12 This is a schematic diagram of the drug supply structure in this invention; Figure 13 This is a schematic diagram of the driving component in this invention; Figure 14 This is an exploded view of the driving component in this invention.

[0022] In the diagram, 1. Processing container; 2. Exhaust duct; 3. Drug supply structure; 310. Drug supply pipeline; 320. One-way valve; 330. Linear guide rod; 340. Second spring; 350. One-way valve core; 360. Contact; 4. Support frame; 5. Support shaft; 6. Second gear; 7. First rack; 710. Bushing; 8. Gearbox; 810. First gear; 9. First electric rod; 910. Second rack; 10. Second electric rod; 1010. Lifting shaft; 1020. Sliding column; 11. First housing; 2. Turntable; 13. Opening and closing plate; 1310. Rotating ring; 14. Stirring paddle; 1410. Point contact pressure rod; 15. Aeration coil; 16. Second housing; 17. Annular guide rod; 18. First spring; 19. Slide table; 1910. Fixed platform; 20. First bushing; 2010. First spiral track; 2020. First linear track; 21. Second bushing; 2110. Second spiral track; 2120. Arc track; 2130. Second linear track; 2140. Elastic plate; 2150. Wedge block. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0025] The following is based on Figures 1-14 This invention describes a dicalcium phosphate wastewater treatment device provided by an embodiment of the present invention.

[0026] like Figures 1-4 As shown, a dicalcium phosphate wastewater treatment device includes a treatment container 1 for holding wastewater and two sets of rotating discs 12 located inside the treatment container 1. Each set of rotating discs 12 has at least one set of opening and closing plates 13 arranged around its circumference, forming an openable and closable valve plate. The valve plate can move up and down along the treatment container 1. At the same time, at least one set of chemical supply pipes 310 are arranged around the treatment container 1. The chemical supply pipes 310 are arranged in parallel along their pipe direction with chemical supply components located on the moving path of the valve plate. A drive component is also provided on the moving path of the valve plate to drive the alternating opening and closing and the up and down movement of the two sets of valve plates. During the treatment of dicalcium phosphate wastewater, wastewater generated in different reaction stages is sequentially injected into the treatment container 1 through corresponding pipes (pH sensors, heavy metal ion sensors, etc. can be installed on the pipes to detect the pH value, heavy metal ion concentration, etc. in the wastewater in the pipes). To facilitate subsequent addition and mixing of reagents, the wastewater injected into the treatment container 1 is sequentially sealed between the two sets of valve plates using the alternating opening and closing characteristics of the two sets of valve plates. Based on the concentration of harmful substances in the wastewater, the reagent supply component performs precise dosing and mixing. During this process, wastewater can be continuously injected. After the wastewater is mixed between the two sets of valve plates, it is discharged to the bottom of the treatment container 1. Simultaneously, the two sets of valve plates are controlled to rise and move, providing space for the mixed reagents while moving to the next dosing component. This process is repeated to further separate the continuously injected wastewater into the treatment container 1 and allow for separate dosing and mixing between the two sets of valve plates. This segmented dosing method completes the continuous injection and simultaneous dosing and mixing of wastewater. On the one hand, it allows for precise reagent mixing based on the concentration of harmful substances in the wastewater at each stage; on the other hand, it allows for simultaneous wastewater injection and dosing and mixing, significantly reducing reaction time.

[0027] In this implementation scheme, a premixing chamber is formed between two sets of valve plates and the inner wall of the treatment container 1. A water storage chamber and a treatment chamber are sequentially formed at the upper and lower ends of the treatment container 1 by the two sets of valve plates. The upper and lower sets of valve plates are controlled to open and close alternately, allowing wastewater to transition from the water storage chamber to the premixing chamber for mixing with chemicals before being discharged into the treatment chamber. During the discharge process, the two sets of valve plates are controlled to move upwards, providing space for the premixing chamber and treatment chamber to treat wastewater for the next time. In the treatment of dicalcium phosphate wastewater, wastewater is injected into the water storage chamber. By utilizing the opening and closing characteristics of the upper valve plate, the wastewater is transferred to the premixing chamber for chemical mixing. During the mixing of chemicals and wastewater, wastewater can be continuously injected into the water storage chamber. After the wastewater and chemicals are mixed in the premixing chamber, the mixed wastewater is transferred to the treatment chamber by utilizing the opening and closing characteristics of the lower valve plate. This process is repeated, controlling the alternating opening and closing of the upper and lower sets of valve plates to simultaneously inject wastewater and add chemicals for mixing.

[0028] like Figures 5-10 , Figure 11 Diagrams showing the state changes in (a) and (b) Figures 13-14 As shown, to achieve stratified chemical dosing of wastewater by alternating opening and closing of two sets of valve plates, a second housing 16 is also included between the two sets of valve plates. The second housing 16 contains an annular guide rod 17, with two sets of first springs 18 sleeved around its circumference. Slides 19 are respectively sleeved on the side offset from the first springs 18, and fixed platforms 1910 are respectively provided on the two sets of slides 19. Meanwhile, a first housing 11 is located in the middle of a turntable 12, and the first housing 11 is fixedly connected to the second housing 16. A rotating ring 1310 is also rotatably installed inside the turntable 12, and the rotating ring 1310 is fixedly connected to the opening and closing plate 13. Furthermore, the two sets of rotating rings 1310 are respectively fixedly connected to the two sets of fixed platforms 1910. When the two sets of fixed platforms 1910 are rotated and subjected to force in sequence, the corresponding opening and closing plates 13 are driven to rotate and open and close around the turntable 12 via the rotating ring 1310. During the alternating opening and closing of the two sets of valve plates, one set of sliding platforms 19 is first pushed to slide along the annular guide rod 17, compressing and storing force on the corresponding first spring 18. During rotation, this causes the corresponding opening and closing plate 13 to rotate and retract into the turntable 12, thus opening and closing the corresponding valve plate. After opening and closing, the spring force of the corresponding first spring 18 is used to reset the opening and closing plate 13, causing the corresponding valve plate to close automatically. Then, in the same manner, force is applied to the other set of sliding platforms 19 to control the opening and closing of the other set of valve plates. Figure 11 As shown in the state change diagrams (a) and (b), firstly, the bottom valve plate is controlled to open and close, allowing the wastewater after chemical mixing to be discharged gradually. During this process, the upper valve plate closes, separating the continuously injected wastewater. After the wastewater is discharged gradually, the upper valve plate is controlled to open and close. During this process, the bottom valve plate closes, allowing the wastewater to be transferred again between the two sets of valve plates for chemical treatment. Then, following this pattern, the wastewater is mixed and injected in layers. Specifically: like Figures 8-10 As shown, it also includes a first bushing 20 fixed to one set of fixed platforms 1910 and a second bushing 21 fixed to another set of fixed platforms 1910. A closed-loop track is formed on the first bushing 20 and the second bushing 21. A lifting shaft 1010 is provided along the movement path of the closed-loop track. A sliding column 1020 is axially mounted on the lifting shaft 1010 and can slide along the closed-loop track, driving the two sets of valve plates to open and close alternately. During the alternating opening and closing of the two sets of valve plates, the lifting shaft 1010 is controlled to move up and down, causing the sliding column 1020 to slide along the closed-loop track, converting the lifting force into rotational force. This sequentially drives the first bushing 20 and the second bushing 21 to rotate. Then, by using the alternating rotation of the first bushing 20 and the second bushing 21, the two sets of sliding platforms 19 are respectively pushed to move in a ring along the annular guide rod 17, sequentially driving the two sets of opening and closing plates 13 to open and close around the corresponding turntable 12, controlling the opening and closing of the two sets of valve plates. More specifically: The sliding path of slider 1020 along the closed-loop track is as follows: ① The closed-loop track includes a first spiral track 2010 on the first bushing 20 and a second spiral track 2110 on the second bushing 21. The second spiral track 2110 can coincide with the trajectory path of the rotated first spiral track 2010, so that the slide column 1020 slides from the first spiral track 2010 to the second spiral track 2110. During the process of the lifting shaft 1010 driving the slide column 1020 to move up and down, if the slide column 1020 is controlled to move from bottom to top, the slide column 1020 first passes through the first spiral track 2010, pushes the first bushing 20 to rotate, and drives the valve plate at the bottom to open and close. When the slide column 1020 moves to the top of the first spiral track 2010 and disengages from it, the force on the first bushing 20 is released, and the valve plate at the bottom closes itself under the elastic force of the corresponding first spring 18. At this time, the slide column 1020 transitions to the second spiral track 2110, pushes the second bushing 21 to rotate, and drives the valve plate at the top to open and close.

[0029] ② The closed-loop track also includes an arc-shaped track 2120 at the top of the trajectory path of the second spiral track 2110, and a second linear track 2130 at the other end of the arc-shaped track 2120. Simultaneously, a first linear track 2020 is also provided at the bottom of the trajectory path of the first spiral track 2010. The trajectory paths of the first linear track 2020 and the second linear track 2130 coincide, allowing the sliding column 1020 to transition from the second linear track 2130 into the first linear track 2020 and return to its original position within the first spiral track 2010. When the sliding column 1020 moves to the top of the second spiral track 2110... When the valve plate at the top is in the arc-shaped track 2120, it is released from the force on the second bushing 21. The valve plate at the top closes itself under the elastic force of the corresponding first spring 18 and pushes the second bushing 21 to rotate and reset. At this time, the slide column 1020 transitions to the second linear track 2130 along the arc-shaped track 2120. By controlling the slide column 1020 to move down and reset, it moves along the second linear track 2130 to the bottom of the first linear track 2020 and resets, preparing for the subsequent transition to the first spiral track 2010. Then, the lifting and lowering motion of the slide column 1020 is used to drive the two sets of valve plates to open and close alternately.

[0030] It should be noted that a wedge block 2150 is also provided on the trajectory path of the second linear track 2130 near the bottom of the second spiral track 2110, and an elastic piece 2140 is provided on one side of the wedge block 2150. This guides the slide column 1020 into the second spiral track 2110 during the initial transition from the first spiral track 2010 to the second spiral track 2110. During the sliding process of the slide column 1020 resetting along the second linear track 2130, the wedge block 2150 is pushed to move aside, allowing the slide column 1020 to transition into the first linear track 2020. During the initial transition of the slide column 1020 from the first spiral track 2010 to the second spiral track 2110, the wedge block 2150 (the bottom of the wedge block 2150) provides support. The wedge surface (set as a spiral surface) serves as a guide, guiding the slide column 1020 into the second spiral track 2110 and preventing it from sliding into the second linear track 2130. During this process, the first spring 18 near the second bushing 21 undergoes only slight deformation and compression. Its compression reaction force does not push the elastic plate 2140 to compress, preventing the slide column 1020 from pushing away the wedge block 2150. During the slide column 1020's reset sliding along the second linear track 2130, the elastic compression of the elastic plate 2140 causes the slide column 1020 to push away the wedge block 2150 (the upper wedge surface of the wedge block 2150 is set as a linear inclined surface) when it passes the wedge block 2150, allowing it to transition and slide into the first linear track 2020.

[0031] like Figures 13-14As shown, as a further embodiment, the drive assembly includes a support frame 4 disposed at the upper port of the processing container 1. A support shaft 5 is provided in the middle of the support frame 4. The support shaft 5 is fixedly connected to one of the first housings 11 (since the two first housings 11 are respectively fixedly connected to the second housing 16, they can drive the two sets of valve plates to move up and down synchronously). At the same time, a first rack 7 is provided on one side of the support shaft 5. At least one set of bushings 710 is provided along the axial direction of the first rack 7. The bushings 710 are sleeved on the support shaft 5 (by sleeved on the support shaft 5, the support shaft 5 can move up and down synchronously with the first rack 7, driving the two sets of valve plates to move up and down). At the same time, it also has independent rotation characteristics, so that the support shaft 5 can drive the two sets of valve plates to rotate. In addition, the support frame 4 is also equipped with a reduction motor 8, and a first gear 810 is provided on the output shaft of the reduction motor 8. The first gear 810 meshes with the first rack 7 to drive the support shaft 5 to move up and down. By controlling the operation of the reduction motor 8, the first gear 810 is driven to rotate. By using the meshing of the first gear 810 with the first rack 7, the rotational motion is converted into the lifting motion, which drives the support shaft 5 to move up and down, and drives the two sets of valve plates to move up and down. This allows the two sets of valve plates to move up synchronously as the wastewater after chemical dosing and mixing rises, providing space for the chemical dosing wastewater.

[0032] Furthermore, the drive assembly also includes a second electric rod 10 disposed at the top of the first rack 7 (since the first rack 7 is only moved by the lifting force, by placing the second electric rod 10 on the first rack 7, it will not rotate with the support shaft 5, thereby reducing the installation and use intensity). The telescopic end of the second electric rod 10 is rotatably connected to the lifting shaft 1010. The lifting shaft 1010 is located inside the support shaft 5 and rotates with the support shaft 5, so that the slide column 1020 is always located in the closed loop track. Then, by using the second electric rod 10 to drive the lifting shaft 1010 to move up and down, the slide column 1020 slides along the closed loop track, driving the two sets of valve plates to open and close alternately.

[0033] like Figures 3-4 , Figures 12-14 As shown, to achieve simultaneous dosing and mixing during the stratified wastewater treatment process, at least one set of dosing structures 3 is installed on the treatment container 1 (the dosing structures 3 can be set according to usage requirements, such as two sets, one as a pH neutralizing agent pipeline and the other as a heavy metal ion coagulation agent pipeline. The agents are usually dissolved in liquid form on-site, so a pumping device can be used to pump the agents into the dosing structures 3, so that when the outlet of the dosing structures 3 is opened, the agents are pumped and jetted into the wastewater). The dosing structures 3 include a dosing pipe 310 and dosing components arranged in parallel along the dosing pipe 310. As the two sets of valve plates move upward layer by layer to provide space for the mixed wastewater, they also move synchronously to the dosing components, so that while the two sets of valve plates stratify the wastewater layer by layer, they can also perform simultaneous dosing and mixing. Specifically: The drug supply assembly includes a one-way valve 320 installed on the drug supply pipeline 310. The one-way valve 320 has a linear guide rod 330 inside, with a second spring 340 at one end and a contact 360 at the other end (the contact 360 protrudes relative to the inner wall of the processing container 1 to allow it to contact and receive force). The linear guide rod 330 also has a one-way valve core 350 along its axial direction to block the valve port of the one-way valve 320. Meanwhile, a stirring paddle 14 is radially arranged on one set of valve plates, and a point-contact rod 1410 is provided at the end near the contact 360. Furthermore, the drive assembly is used to drive the valve plates to rotate and move. The point-contact pressure rod 1410 drives the contact 360 to move and open the valve port of the drug supply component. When using two sets of valve plates to separate wastewater, the two sets of valve plates can be driven to rotate through the setting of the drive component. On the one hand, the point-contact pressure rod 1410 circulates through the contact 360 and applies pressure to the contact 360. During each contact and pressure application, the one-way valve core 350 is pushed to open, so that the drug is pumped out. According to the current concentration of harmful substances in the wastewater, its rotation frequency is controlled, and then the drug jet frequency is controlled to carry out the precise proportion of the drug. On the other hand, it drives the stirring paddle 14 to rotate, and synchronously stirs the wastewater in the separation, so that the wastewater and the drug are fully coagulated and proportioned.

[0034] In this embodiment, the drive assembly also includes a second gear 6 arranged in parallel along the axial direction of the support shaft 5. The number of second gears 6 is the same as that of the drug supply assembly. At the same time, the support frame 4 is also provided with a first electric rod 9, and a second rack 910 is provided at the telescopic end of the first electric rod 9. The second rack 910 meshes with the second gear 6. During the process of the support shaft 5 driving the two sets of valve plates to move upward step by step, the second gear 6 passes through the second rack 910 in sequence. When it is necessary to add drugs to the wastewater between the two sets of valve plates, the first electric rod 9 is controlled to reciprocate and extend, pushing the second rack 910 to reciprocate and mesh with the second gear 6, generating a driving force that acts on the reciprocating rotation of the support shaft 5, thereby driving the stirring paddle 14 and its contact pressure rod 1410 on one of the valve plates to reciprocate and rotate, so that the drug is quantitatively added to the wastewater, and the wastewater and the drug are simultaneously stirred and mixed.

[0035] It should be noted that although the edge of the valve plate will drive the contact to move 360 ​​degrees to make way as the valve plate passes through the drug supply component, so that the drug is pumped into a jet, it is only driven once. Compared with the volume of wastewater, its effect on the ratio of wastewater to drug is almost negligible.

[0036] In addition to the above, it also includes an aeration coil 15 installed at the bottom of the treatment container 1 and an exhaust duct 2 installed above the chemical supply assembly. This allows the two sets of valve plates to move above the exhaust duct 2, directing the gas discharged from the aeration coil 15. After the wastewater is mixed and dosed in a stratified manner, the two sets of valve plates can be controlled to move above the exhaust duct 2, forming a cover effect (when lime is added to the dicalcium phosphate wastewater and it is aerated, acidic gas, ammonia, and pungent odor will be generated). Subsequently, during the aeration treatment of the wastewater using the aeration coil 15, the aerated gas is guided to be discharged through the exhaust duct 2 for centralized purification treatment, avoiding direct gas emission and pollution of the working environment.

[0037] During use (operation), when discharging dicalcium phosphate wastewater from different reaction stages into the treatment container 1, the alternating opening and closing characteristics of two sets of valve plates within the treatment container 1 are used to sequentially seal the wastewater between the two sets of valve plates. Simultaneously, based on the concentration of harmful substances in the wastewater, the dosing component is used for precise dosing and mixing. During this process, the wastewater can be continuously injected. After the dosing and mixing of the wastewater between the two sets of valve plates is completed, it is discharged to the bottom of the treatment container 1, while simultaneously controlling the upward movement of the two sets of valve plates to provide space for the continuous discharge of the mixed solution. Then, the continuously injected wastewater is again independently separated between the two sets of valve plates for dosing and mixing. Following this approach, the wastewater is injected and mixed with chemicals in a segmented dosing ratio. This allows for precise dosing of chemicals based on the concentration of harmful substances in the wastewater, and also enables simultaneous injection of wastewater and dosing and mixing, significantly saving reaction and treatment time. Furthermore, during the aeration treatment after the wastewater and reagents are mixed, the sealing effect formed by the two sets of valve plates can be used to guide the aerated gas to be discharged in an orderly manner for treatment, avoiding direct venting of gas and pollution of the working environment. After the wastewater is aerated, it is introduced into the sedimentation tank for sedimentation and stratification. At this time, the two sets of valve plates are controlled to move down and reset to the bottom of the treatment container 1 to prepare for the wastewater to be treated again.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A dicalcium phosphate wastewater treatment device, comprising a treatment container (1) for holding wastewater, characterized in that, Also includes: Two sets of turntables (12) are provided and located inside the processing container (1). Each set of turntables (12) is provided with at least one set of opening and closing plates (13) around its circumference. The turntables (12) and the opening and closing plates (13) form an openable and closable valve plate. The valve plate can move up and down along the processing container (1). The drug supply pipeline (310) is arranged in at least one set around the processing container (1), wherein the drug supply pipeline (310) is provided with drug supply components in parallel along its pipeline direction, and the drug supply components are located on the moving path of the valve plate; A premixing chamber is formed between the two sets of valve plates and the inner wall of the treatment container (1). A water storage chamber and a treatment chamber are formed sequentially at the upper and lower ends of the treatment container (1) through the two sets of valve plates. The upper and lower sets of valve plates are controlled to open and close alternately, so that the wastewater is transferred from the water storage chamber to the premixing chamber and mixed with the reagent before being discharged to the treatment chamber. During the discharge process, the two sets of valve plates are controlled to move upward to provide space for the premixing chamber and the treatment chamber to treat wastewater for the next time. A drive assembly for driving the alternating opening and closing and lifting / lowering movement of two sets of valve plates.

2. The dicalcium phosphate wastewater treatment device according to claim 1, characterized in that, The drug supply assembly includes a one-way valve (320) installed on the drug supply pipeline (310). The one-way valve (320) has a linear guide rod (330) inside. One end of the linear guide rod (330) is provided with a second spring (340), and the other end of the linear guide rod (330) is also provided with a contact (360). Furthermore, the linear guide rod (330) is also provided with a one-way valve core (350) along its axial direction to block the valve port of the one-way valve (320). One set of valve plates is provided with radially arranged stirring paddles (14), and a point-contact rod (1410) is provided at one end near the contact (360). The drive assembly is also used to drive the valve plate to rotate and move, so that the touch rod (1410) drives the contact (360) to move and open the valve port of the drug supply assembly.

3. The dicalcium phosphate wastewater treatment device according to claim 2, characterized in that, Also includes: The second housing (16) is arranged between the two sets of valve plates. The second housing (16) has an annular guide rod (17) inside. The annular guide rod (17) is fitted with two sets of first springs (18) along its circumference. A slide table (19) is fitted on one side of the slide table (19) that is offset from the first springs (18). A fixed platform (1910) is provided on the two sets of slide tables (19). The first housing (11) is located in the middle of the turntable (12) and is fixedly connected to the second housing (16). The turntable (12) also has a rotating ring (1310) installed inside, which is fixedly connected to the opening and closing plate (13). The two sets of rotating rings (1310) are respectively fixed to the two sets of fixed platforms (1910).

4. The dicalcium phosphate wastewater treatment device according to claim 3, characterized in that, Also includes: The first bushing (20) is fixedly connected to one of the fixed platforms (1910); The second bushing (21) is fixed to another set of fixed platforms (1910), wherein the first bushing (20) and the second bushing (21) form a closed loop track; The lifting shaft (1010) is arranged on the moving path of the closed-loop track. The lifting shaft (1010) is axially provided with a sliding column (1020). The sliding column (1020) can slide along the closed-loop track and drive two sets of valve plates to open and close alternately.

5. The dicalcium phosphate wastewater treatment device according to claim 4, characterized in that, The closed-loop track includes: The first helical track (2010) is located on the first bushing (20); The second spiral track (2110) is provided on the second bushing (21) and can coincide with the trajectory path of the rotated first spiral track (2010), so that the sliding column (1020) can slide from the first spiral track (2010) into the second spiral track (2110). The top of the trajectory path of the second spiral track (2110) is also provided with an arc track (2120), and a second linear track (2130) is provided at the other end of the arc track (2120). The bottom of the trajectory path of the first spiral track (2010) is also provided with a first linear track (2020). The trajectory path of the first linear track (2020) coincides with that of the second linear track (2130), so that the sliding column (1020) slides from the second linear track (2130) into the first linear track (2020) and returns to the first spiral track (2010).

6. The dicalcium phosphate wastewater treatment device according to claim 5, characterized in that, A wedge block (2150) is provided on the track path of the second linear track (2130) near the bottom of the second spiral track (2110), and an elastic piece (2140) is provided on one side of the wedge block (2150). In the initial stage of the transition of the slide column (1020) from the first spiral track (2010) to the second spiral track (2110), the slide column (1020) is guided into the second spiral track (2110). During the process of the slide column (1020) resetting and sliding along the second linear track (2130), the wedge block (2150) is pushed to give way, so that the slide column (1020) transitions to the first linear track (2020).

7. A dicalcium phosphate wastewater treatment device according to any one of claims 4-6, characterized in that, The driving component includes: A support frame (4) is installed at the upper port of the processing container (1). A support shaft (5) is provided in the middle of the support frame (4). The support shaft (5) is located above the valve plate moving path, and the support shaft (5) is provided with second gears (6) in parallel along its axial direction. The number of second gears (6) is the same as that of the drug supply components. The support frame (4) is provided with a first electric rod (9), and a second rack (910) is provided at the telescopic end of the first electric rod (9). The second rack (910) meshes with the second gear (6) to drive the support shaft (5) to rotate, so that the support shaft (5) drives the stirring paddle (14) on the valve plate to rotate.

8. The dicalcium phosphate wastewater treatment device according to claim 7, characterized in that, The driving component also includes: The first rack (7) is arranged on one side of the support shaft (5), wherein the first rack (7) is provided with at least one set of bushings (710) along its axial direction, and the bushings (710) are sleeved on the support shaft (5); The support frame (4) is also provided with a reduction motor (8), and a first gear (810) is provided on the output shaft of the reduction motor (8). The first gear (810) meshes with the first rack (7) to drive the support shaft (5) to move up and down, so that the support shaft (5) drives the valve plate to move up and down and the second gear (6) passes through the second rack (910) in sequence.

9. The dicalcium phosphate wastewater treatment device according to claim 8, characterized in that, The drive assembly also includes a second electric rod (10) disposed at the top of the first rack (7). The telescopic end of the second electric rod (10) is connected to the lifting shaft (1010) and is used to drive the slide column (1020) to slide along the closed-loop track, so that the two sets of valve plates open and close alternately.

10. A dicalcium phosphate wastewater treatment device according to claim 9, characterized in that, It also includes an aeration coil (15) installed at the bottom of the treatment container (1) and an exhaust duct (2) installed above the drug supply assembly, so that the two sets of valve plates move above the exhaust duct (2) and direct the gas discharged from the aeration coil (15) to flow in a specific direction.

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