A high-purity quartz sand production wastewater treatment device and a treatment method thereof

Abstract

The application discloses a high-purity quartz sand production wastewater treatment device and a treatment method thereof, and belongs to the technical field of wastewater treatment. The device mainly comprises a mixing tank, the mixing tank comprises a tank body, a stirring mechanism is arranged in the tank body, a valve one is fixedly connected to the bottom of the tank body, a buffer tank is fixedly arranged at the bottom of the valve one, a fixed shell is fixedly connected to one side of the buffer tank, a driving mechanism is fixedly arranged at the top of the fixed shell, a filtering mechanism is rotatably connected to the inside of the fixed shell, a sedimentation tank is fixedly connected to the other side of the fixed shell, and a valve two is fixedly connected to the right side wall of the sedimentation tank. The stirring mechanism, the high-speed forward rotation driving motor one and the reverse slow rotation driving motor one are arranged, the medicament and the wastewater are fully and quickly mixed, the mixed wastewater is slowly stirred and the inner wall of the tank body is scraped at the same time, and deposition and crystallization adhesion are avoided. The application is mainly used for treating high-purity quartz sand production wastewater.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, and more specifically, relates to a device and method for treating wastewater from the production of high-purity quartz sand. Background Technology

[0002] High-purity quartz sand is widely used in high-end fields such as semiconductors, photovoltaics, and optics. If its wastewater is discharged directly without treatment, it will cause serious harm to the environment and human health, and may also waste recyclable resources. The production of high-purity quartz sand usually involves processes such as crushing, acid washing, and water washing. The wastewater may contain high concentrations of acid, fluoride ions, and various heavy metal ions, which need to be cleaned up in a timely manner.

[0003] In existing technologies, the equipment for treating this wastewater generally includes sedimentation tanks, pH adjustment tanks, coagulation reaction tanks, secondary sedimentation tanks, and is equipped with filtration equipment and stirring equipment. The reasons for separating the treatment steps of this wastewater include: avoiding the impact of water flow on sedimentation due to coagulation operations, and preventing interference between filtration and sedimentation operations (if carried out simultaneously, turbulence will occur, resulting in a longer sedimentation time or dead zones in the filtration operation, which will not be able to filter fully).

[0004] Therefore, existing technologies are suitable for treating large volumes of wastewater, but for small volumes or low flow rates, they suffer from drawbacks such as large footprint, dispersed treatment steps, and low treatment efficiency. Chinese Patent Publication No. CN119954347A discloses a quartz sand pickling wastewater treatment device and its treatment process, including a treatment tank, a neutralization and flocculation mechanism, a dosing mechanism, a mixing pipe, and an inclined plate sedimentation mechanism. Through the neutralization and flocculation mechanism, harmful substances such as metal ions and fluoride ions in the wastewater are rapidly flocculated into clumps and precipitates, quickly separating the pickling wastewater from the precipitates. The mixing pipe and inclined plate sedimentation mechanism further remove harmful substances from the pickling wastewater, achieving highly efficient treatment of the pickling wastewater.

[0005] During later use, the device also had the following problems: lack of a structure for treating suspended solids; easy precipitation and crystallization of fluoride ions, lack of a wall scraping mechanism; the treated wastewater was directly pumped into the inclined plate sedimentation mechanism, making it difficult to control the water flow and affecting the sedimentation operation, and the wastewater was difficult to keep still during sedimentation. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a high-purity quartz sand production wastewater treatment device and treatment method. The device uses a stirring mechanism and a high-speed forward-rotating drive motor to fully and quickly mix the reagent and wastewater. The drive motor is then adjusted to rotate slowly in the reverse direction to slowly stir the mixed wastewater and scrape the inner wall of the tank to prevent sedimentation, crystallization and adhesion.

[0007] The aforementioned high-purity quartz sand production wastewater treatment device includes a mixing tank, which comprises a tank body. Support legs are fixedly connected to the bottom of the tank body, and an mounting arm is fixedly connected to the top of the tank body. An agitation mechanism is provided inside the tank body. The agitation mechanism includes a drive motor, which is fixedly connected to the top of the mounting arm. A transmission shaft is fixedly connected to the shaft of the drive motor. A diffuser block is fixedly connected to the upper part of the transmission shaft, and multiple sets of diffuser rings are fixedly connected to the diffuser block. Multiple sets of agitators are fixedly connected to the middle of the transmission shaft. A drive groove is fixedly provided at the bottom of the transmission shaft, and a one-way drive ring is rotatably connected to the bottom of the transmission shaft. A scraper is fixedly connected to the one-way drive ring. A valve is fixedly connected to the bottom of the tank body, and a buffer tank is fixedly provided at the bottom of the valve. A fixed shell is fixedly connected to one side of the buffer tank, and a drive mechanism is fixedly provided at the top of the fixed shell. A filtration mechanism is rotatably connected inside the fixed shell. A sedimentation tank is fixedly connected to the other side of the fixed shell, and a valve is fixedly connected to the right side wall of the sedimentation tank. An inclined plate assembly is fixedly connected inside the sedimentation tank, and a baffle plate is fixedly connected to the top of the inclined plate assembly.

[0008] Preferably, multiple sets of mounting grooves are fixedly formed on the inner wall of the unidirectional drive ring. A compression spring is fixedly connected to the bottom of the mounting groove, and a push block is fixedly connected to the other end of the compression spring. The push block is slidably connected to the mounting groove, and a helical tooth is fixedly connected to the front of the push block.

[0009] Preferably, the buffer tank is fixedly provided with a water inlet at the top, which is fixedly connected to the bottom of a valve. The buffer tank is fixedly provided with a slag outlet at the bottom. An overflow outlet is fixedly provided on the upper side wall of the buffer tank. A water tank is fixedly provided at the bottom of the overflow outlet. A water pipe is fixedly connected to the bottom of the water tank. The other end of the water pipe is connected to the lower right side wall of the sedimentation tank.

[0010] Preferably, a sedimentation chamber is fixedly provided inside the left side of the fixed shell. A primary sedimentation inlet and a secondary sedimentation inlet are respectively provided on both sides of the bottom of the sedimentation chamber. A slag outlet is fixedly opened on both sides of the upper part of the sedimentation chamber. A slag discharge pipe is fixedly connected to the outside of the slag outlet. A valve three is fixedly installed at the bottom of the other end of the slag discharge pipe. Multiple sets of vibration grooves are fixedly provided on the upper inner wall of the sedimentation chamber. A water passage groove is fixedly provided at the bottom of the vibration groove. The water passage groove extends to the right out of the fixed shell. A rotating cavity is fixedly opened in the center of the fixed shell. A suspension chamber is fixedly provided inside the right side of the fixed shell. A compression block is fixedly provided on the top inner wall of the suspension chamber. An inlet and an outlet are respectively opened on both sides of the compression block. A filter baffle is fixedly provided at the bottom of the suspension chamber. A top frame is provided on one side of the filter baffle. A filter plate two is fixedly provided on the other side of the filter baffle. A slag discharge pipe is fixedly provided at the bottom of the filter baffle. A valve plate is provided on the slag discharge pipe.

[0011] Preferably, the filtration mechanism includes a connecting shaft, a sedimentation treatment wheel is fixedly connected to the left side of the connecting shaft, the sedimentation treatment wheel is rotatably connected to the sedimentation chamber, a sedimentation trough is fixedly opened on the left side wall of the sedimentation treatment wheel, two sedimentation troughs are fixedly opened on the right side wall of the sedimentation treatment wheel, a vibrating filter block is slidably connected in the first and second sedimentation troughs, a suspension treatment wheel is fixedly connected to the right side of the connecting shaft, the suspension treatment wheel is rotatably connected to the suspension chamber, multiple sets of installation slots are fixedly opened on the suspension treatment wheel, a compression spring is fixedly connected to the bottom of the installation slot, a pusher plate is fixedly connected to the other end of the compression spring, and the pusher plate is slidably connected to the installation slot.

[0012] Preferably, a sliding groove is fixedly opened on the side wall of the first and second settling troughs, a slider is fixedly connected to both sides of the vibrating filter block, a second compression spring is fixedly connected to the slider, the other end of the second compression spring is fixedly connected to the inner wall of the sliding groove, the slider is slidably connected to the sliding groove, a filter plate is fixedly connected to the top of the vibrating filter block, and a protrusion is fixedly connected to the bottom of the vibrating filter block.

[0013] Preferably, the driving mechanism includes a second driving motor, which is fixedly connected to the top of the fixed housing. A small pulley is fixedly connected to the rotating shaft of the second driving motor, a belt is connected to the small pulley, and a large pulley is connected to the other end of the belt. The large pulley is fixedly connected to the front end of the connecting shaft.

[0014] Preferably, a treatment method using a high-purity quartz sand production wastewater treatment device includes the following steps:

[0015] a: Pour the wastewater to be treated into the tank, first add the alkaline neutralizing agent, start the drive motor and make it rotate at high speed to carry out acid-base neutralization treatment;

[0016] b: Add calcium chloride reagent and keep the drive motor running at high speed to remove fluoride ions from the wastewater;

[0017] c: Add sodium sulfide reagent and keep the drive motor rotating at high speed to remove heavy metal ions from the wastewater;

[0018] d: Add flocculant, gradually reduce the rotation speed of the drive motor to keep the flocculant and the fine sediment impurities in the wastewater mixed to form a colloid; and finally adjust the drive motor to rotate slowly in the opposite direction, and use the scraper to stir the tank to avoid the flocculant colloid being damaged by the excessive speed, and scrape the crystallized precipitates on the inner wall of the tank.

[0019] e: Open valve one to let the wastewater flow into the buffer tank first, where it will undergo a first sedimentation. Then, the wastewater with fewer sediment impurities will flow into the sedimentation tank through the overflow port at the top and the water pipe for a second sedimentation. Turn on drive motor two, and the filtration mechanism will start to rotate and perform filtration and cleaning operations on the sediment at the bottom of the buffer tank, the sediment at the bottom of the sedimentation tank, and the suspended matter on the upper layer of the sedimentation tank.

[0020] f: Open valve two to discharge the treated wastewater, open the valve plate to discharge suspended impurities, and open valve three to discharge the sediment.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. By setting up a stirring mechanism, the high-speed forward-rotating drive motor one completes the full and rapid mixing of the agent and wastewater. Adjusting the drive motor one to rotate slowly in the reverse direction, the mixed wastewater is slowly stirred to avoid breaking the newly flocculated colloids and affecting the adsorption effect of the colloids. At the same time, the power of the drive shaft can be transmitted to the scraper to scrape the inner wall of the tank to prevent sedimentation, crystallization and adhesion.

[0023] 2. By setting up a buffer tank, the mixed liquid flowing down from the tank is prevented from scouring the relatively static mixed liquid in the sedimentation tank, thus affecting the sedimentation effect. At the same time, the buffer tank can serve as the first sedimentation tank, where larger particles settle first, reducing the pressure on the sedimentation treatment of mixed wastewater in the sedimentation tank.

[0024] 3. By setting up a filtration mechanism and a fixed shell, the two work together to simultaneously treat the sediment at the bottom of the buffer tank, the sediment at the bottom of the sedimentation tank, and the suspended solids on the upper layer of the sedimentation tank, which greatly improves the filtration effect and reduces the floor space required. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall rear structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the internal structure of the mixing tank;

[0029] Figure 5 This is a schematic diagram of the exploded structure of the stirring mechanism;

[0030] Figure 6 This is an exploded view of the internal structure of a unidirectional drive ring.

[0031] Figure 7 A schematic diagram of the internal structure of the buffer tank and the settling tank;

[0032] Figure 8 This is a schematic diagram of the overall structure of the buffer tank;

[0033] Figure 9 A schematic diagram of the sedimentation tank, the fixed shell, and the filtration mechanism;

[0034] Figure 10 This is a schematic diagram of the internal structure of the fixed shell;

[0035] Figure 11 This is an exploded structural diagram of the fixed shell and the filtration mechanism;

[0036] Figure 12 An exploded view of the left side of the fixed shell and the filter mechanism;

[0037] Figure 13 Exploded view of the sedimentation treatment impeller and vibrating filter block;

[0038] Figure 14 This is a schematic diagram of the structure of the vibrating filter block;

[0039] Figure 15 A schematic diagram of the sedimentation chamber structure inside the fixed shell;

[0040] Figure 16 This is a schematic diagram of the structure of the fixed shell and the slag discharge pipe;

[0041] Figure 17 A schematic diagram of the internal suspension cavity and suspension treatment wheel of the fixed shell;

[0042] Figure 18 This is a schematic diagram of the filter baffle.

[0043] In the diagram, 1. Tank body; 101. Support leg; 102. Mounting arm; 2. Stirring mechanism; 201. Drive motor one; 202. Transmission shaft; 202A. Drive groove; 203. Diffusion block; 203A. Diffusion ring; 204. Stirring paddle; 205. One-way drive ring; 205A. Mounting groove one; 205B. Compression spring one; 205C. Push block; 205D. Helical teeth; 206. Scraper; 3. 4. Buffer tank; 401. Slag outlet; 402. Water inlet; 403. Overflow outlet; 404. Water tank; 405. Water pipe; 5. Fixed shell; 501. Sedimentation chamber; 501A. Primary sedimentation inlet; 501B. Secondary sedimentation inlet; 501C. Slag outlet; 501D. Vibration groove; 502. Water trough; 503. Suspension chamber; 503A. Slag outlet pipe; 503B. Inlet; 503C. Outlet; 503D. Compression block; 504. Rotary chamber; 6. Sedimentation tank; 601. Valve II; 602. Inclined plate assembly; 603. Baffle plate; 7. Drive mechanism; 701. Drive motor II; 702. Belt; 703. Large pulley; 704. Small pulley; 8. Slag discharge pipe; 801. Valve III; 9. Filtration mechanism; 901. Sedimentation treatment impeller; 901A. 901B, Second settling tank opening; 901C, Slide chute; 902, Vibrating filter block; 902A, Sliding block; 902B, Compression spring II; 902C, Filter plate I; 902D, Protrusion; 903, Connecting shaft; 904, Suspension treatment wheel; 904A, Mounting groove II; 905, Push plate; 906, Compression spring III; 10, Filter baffle; 1001, Top frame; 1002, Filter plate II. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings:

[0045] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise explicitly specified and limited, the terms "setting," "installing," "connecting," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] like Figure 1 , Figure 2 and Figure 3As shown, a high-purity quartz sand production wastewater treatment device includes a mixing tank. A stirring mechanism 2 and a high-speed forward-rotating drive motor 201 are used to thoroughly and quickly mix the reagents and wastewater. Adjusting the drive motor 201 to rotate slowly in the reverse direction allows for slow agitation of the mixed wastewater, preventing the breaking of the newly flocculated colloids and affecting their adsorption effect. Simultaneously, the power from the drive shaft 202 is transmitted to the scraper 206, which scrapes the inner wall of the tank 1 to prevent sedimentation and crystallization. The mixing tank includes a tank body 1, with a support leg 101 fixedly connected to the bottom and an mounting arm 102 fixedly connected to the top. Figure 4 As shown, the tank 1 is equipped with a stirring mechanism 2. The stirring mechanism 2 includes a drive motor 201, which is fixedly connected to the top of the mounting arm 102. The drive motor 201 is fixedly connected to a transmission shaft 202. A diffuser block 203 is fixedly connected to the upper part of the transmission shaft 202. Multiple diffuser rings 203A are fixedly connected to the diffuser block 203. When the stirring paddle 204 rotates at high speed, it pushes the wastewater and the agent upward. At this time, the mixture is subjected to greater axial shear, which promotes mixing. When the mixed agent flows upward and hits the diffuser rings 203A, radial mixing and diffusion occur, which further promotes the mixing effect.

[0047] Multiple sets of stirring paddles 204 are fixedly connected to the middle of the drive shaft 202. A drive groove 202A is fixedly provided at the bottom of the drive shaft 202. A one-way drive ring 205 is rotatably connected to the bottom of the drive shaft 202. A scraper 206 is fixedly connected to the one-way drive ring 205. A valve 3 is fixedly connected to the bottom of the tank body 1. A buffer tank 4 is fixedly provided at the bottom of the valve 3. A fixed shell 5 is fixedly connected to one side of the buffer tank 4. By setting up the buffer tank 4, the mixed liquid flowing down from the tank body 1 is prevented from scouring the relatively static mixed liquid in the sedimentation tank 6, thus affecting the sedimentation effect. At the same time, the buffer tank 4 can serve as a first sedimentation tank, where larger particles settle first, reducing the pressure on the sedimentation treatment of the mixed wastewater in the sedimentation tank 6. Figure 9 and Figure 10 As shown, a drive mechanism 7 is fixedly installed on the top of the fixed shell 5, and a filter mechanism 9 is rotatably connected inside the fixed shell 5. By setting the filter mechanism 9 and the fixed shell 5, the two cooperate with each other to simultaneously treat the sediment at the bottom of the buffer tank 4, the sediment at the bottom of the sedimentation tank 6, and the suspended matter on the upper layer of the sedimentation tank 6, which greatly improves the filtration effect and reduces the floor space.

[0048] A sedimentation tank 6 is fixedly connected to the other side of the fixed shell 5. A valve 601 is fixedly connected to the right side wall of the sedimentation tank 6. An inclined plate assembly 602 is fixedly connected inside the sedimentation tank 6, and a baffle plate 603 is fixedly connected to the top of the inclined plate assembly 602. The inclined plate assembly 602 is used in the sedimentation tank 6 to accelerate sedimentation. This is a prior art method and is not the focus of this device design, so it will not be described in detail. The sediment eventually falls to the bottom of the sedimentation tank 6. Since the bottom of the sedimentation tank 6 is inclined, the sedimented impurities will accumulate on the left side of the sedimentation tank 6 and be captured and filtered by the filtration mechanism 9. The suspended solids are in the upper layer of the sedimentation tank 6 and come into contact with the baffle plate 603. Under the processing of the filtration mechanism 9, the upper water enters the fixed shell 5 from the inlet 503B and exits from the outlet 503C. With the guidance of the baffle plate 603, the upper water flows in a slow circulation state, reducing the area of ​​the dead zone.

[0049] like Figure 5 and Figure 6 As shown, multiple sets of mounting slots 205A are fixedly formed on the inner wall of the one-way drive ring 205. A compression spring 205B is fixedly connected to the bottom of the mounting slot 205A, and a push block 205C is fixedly connected to the other end of the compression spring 205B. The push block 205C is slidably connected to the mounting slot 205A, and a helical tooth 205D is fixedly connected to the front of the push block 205C. The helical tooth 205D cooperates with the drive slot 202A. Under the push of the compression spring 205B, the helical tooth 205D maintains contact with the drive slot 202A. When the drive shaft 202 rotates in the forward direction, the helical tooth 205D slides with the drive slot 202A and cannot drive the scraper 206. When the drive shaft 202 rotates in the reverse direction, the top edge of the helical tooth 205D engages with the drive slot 202A, transmitting the power of the drive shaft 202 to the scraper 206.

[0050] like Figure 7 and Figure 8 As shown, the buffer tank 4 has an inlet 402 fixedly installed at the top, which is fixedly connected to the bottom of valve 3. The buffer tank 4 also has a slag outlet 401 fixedly installed at the bottom. The bottom of the buffer tank 4 is also designed with an incline. After sedimentation, impurities accumulate at the slag outlet 401 under gravity and enter the filter mechanism 9 through the primary sedimentation inlet 501A for filtration. An overflow outlet 403 is fixedly installed on the upper side wall of the buffer tank 4. A water tank 404 is fixedly installed at the bottom of the overflow outlet 403, and a water pipe 405 is fixedly connected to the bottom of the water tank 404. The other end of the water pipe 405 is connected to the lower right side wall of the sedimentation tank 6. After the mixed wastewater enters the buffer tank 4, primary sedimentation occurs. Wastewater with fewer impurities flows out from the overflow outlet 403 and enters the sedimentation tank 6 for secondary sedimentation.

[0051] like Figure 15 and Figure 16As shown, a sedimentation chamber 501 is fixedly installed inside the left side of the fixed shell 5. A primary sedimentation inlet 501A and a secondary sedimentation inlet 501B are respectively located on both sides of the bottom of the sedimentation chamber 501. The primary sedimentation inlet 501A allows sediment from the buffer tank 4 to enter, while the secondary sedimentation inlet 501B allows sediment from the sedimentation tank 6 to enter, where they are filtered separately without interference. Slag outlets 501C are fixedly opened on both sides of the upper part of the sedimentation chamber 501. The filtered sediment impurities are discharged from the slag outlets 501C and enter the slag discharge pipe 8. A discharge pipe is fixedly connected to the outside of the slag outlet 501C. The bottom of the other end of the slag pipe 8 and the slag discharge pipe 8 is fixedly installed with a valve 801. The upper inner wall of the sedimentation chamber 501 is fixedly provided with multiple sets of vibration grooves 501D. The bottom of the vibration grooves 501D is fixedly provided with a water passage trough 502. By setting the vibration grooves 501D and the water passage trough 502 at the top of the sedimentation chamber 501, when the vibrating filter block 902 rotates and passes through the sedimentation treatment wheel 901, the wastewater passes through the filter plate 902C and flows into the sedimentation tank 6 from the bottom water passage trough 502. The filtered sediment impurities are separated by the continuous vibration of the vibrating filter block 902 and fall into the slag discharge pipe 8.

[0052] A fixed shell 5 extends to the right from the water tank 502. A rotating cavity 504 is fixedly opened in the center of the fixed shell 5, and the rotating cavity 504 is rotatably connected to the connecting shaft 903. A suspension cavity 503 is fixedly installed inside the right side of the fixed shell 5. A compression block 503D is fixedly installed on the inner wall of the top of the suspension cavity 503. An inlet 503B and an outlet 503C are respectively opened on both sides of the compression block 503D. A filter baffle 10 is fixedly installed at the bottom of the suspension cavity 503. By setting the compression block 503D and the filter baffle 10 in the suspension cavity 503, when the suspension treatment wheel 904 leads the pusher plate 905 to rotate, it will push the wastewater into the inlet 503B and accumulate in the sludge discharge pipe 503A under the obstruction of the filter baffle 10. The filtered wastewater continues to... The filter moves forward under the push of the pusher plate 905 and is discharged from the outlet 503C. When the pusher plate 905 retracts the suspension treatment rotor 904 under the push of the compression block 503D, it can prevent the filtered wastewater from continuing to follow the pusher plate 905 to the area of ​​the inlet 503B, reducing the filtration efficiency and ensuring that the wastewater can be completely discharged from the outlet 503C. When the pusher plate 905 retracts the suspension treatment rotor 904 under the push of the filter baffle 10, it can avoid interference with the filter baffle 10. The filter baffle 10 has a top frame 1001 on one side and a filter plate 1002 fixed on the other side. The bottom of the filter baffle 10 is fixed with a slag discharge pipe 503A, and a valve plate is provided on the slag discharge pipe 503A. Closing the valve plate can prevent wastewater and suspended impurities from being discharged randomly from the slag discharge pipe 503A. Opening the valve plate can discharge the impurities stored in the slag discharge pipe 503A.

[0053] like Figure 11 , Figure 12 and Figure 14 As shown, the filtration mechanism 9 includes a connecting shaft 903. A sedimentation wheel 901 is fixedly connected to the left side of the connecting shaft 903. The sedimentation wheel 901 is rotatably connected to the sedimentation chamber 501. A sedimentation port 901A is fixedly opened on the left side wall of the sedimentation wheel 901, and a second sedimentation port 901B is fixedly opened on the right side wall of the sedimentation wheel 901. The first sedimentation port 901A and the second sedimentation port 901B do not interfere with each other, and wastewater cannot flow between them. Therefore, when the sedimentation wheel 901 rotates, it can simultaneously clean and filter the sediment in the sedimentation tank 6 and the buffer tank 4, occupying a small area. A vibrating filter block 902 is slidably connected inside the first sedimentation port 901A and the second sedimentation port 901B. The vibrating filter block 902 filters the wastewater and generates vibration at the same time, which can prevent sediment from sticking together and affecting the filtration efficiency. Figure 17 and Figure 18 As shown, a suspension treatment wheel 904 is fixedly connected to the right side of the connecting shaft 903. The suspension treatment wheel 904 is rotatably connected to the suspension cavity 503. Multiple sets of mounting grooves 904A are fixedly opened on the suspension treatment wheel 904. A compression spring 906 is fixedly connected to the bottom of the mounting groove 904A. A pusher plate 905 is fixedly connected to the other end of the compression spring 906. The pusher plate 905 is slidably connected to the mounting groove 904A. The pusher plate 905 is kept in contact with the inner wall of the suspension cavity 503 under the push of the compression spring 906. At the same time, it can retract into the sedimentation treatment wheel 901 when it comes into contact with the compression block 503D and the filter baffle 10.

[0054] like Figure 13 As shown, a sliding groove 901C is fixedly opened on the side wall of the first settling tank 901A and the second settling tank 901B. A slider 902A is fixedly connected to both sides of the vibrating filter block 902. A second compression spring 902B is fixedly connected to the slider 902A, and the other end of the second compression spring 902B is fixedly connected to the inner wall of the sliding groove 901C. The slider 902A and the sliding groove 901C are slidably connected. A first filter plate 902C is fixedly connected to the top of the vibrating filter block 902, and a protrusion 902D is fixedly connected to the bottom of the vibrating filter block 902. The protrusion 902D cooperates with the vibrating groove 501D. Under the push of the second compression spring 902B, when the vibrating filter block 902 rotates to the area of ​​the vibrating groove 501D, it vibrates, which can efficiently remove the deposited impurities on the first filter plate 902C.

[0055] The drive mechanism 7 includes a second drive motor 701, which is fixedly connected to the top of the fixed housing 5. A small pulley 704 is fixedly connected to the shaft of the second drive motor 701. A belt 702 is connected to the small pulley 704. A large pulley 703 is connected to the other end of the belt 702. The large pulley 703 is fixedly connected to the front end of the connecting shaft 903.

[0056] A method for treating wastewater from the production of high-purity quartz sand using a high-purity quartz sand production wastewater treatment device includes the following steps:

[0057] a: Pour the wastewater to be treated into tank 1, first add alkaline neutralizing agent, start drive motor 201 and make it rotate at high speed to carry out acid-base neutralization treatment;

[0058] b: Add calcium chloride reagent and keep the drive motor 201 rotating at high speed to remove fluoride ions from the wastewater;

[0059] c: Add sodium sulfide reagent and keep the drive motor 201 rotating at high speed to remove heavy metal ions from the wastewater;

[0060] d: Add flocculant, gradually reduce the rotation speed of drive motor 201 to keep the flocculant and the fine sediment impurities in the wastewater mixed to form a colloid; and finally adjust drive motor 201 to rotate slowly in the opposite direction, and scraper 206 to stir the tank 1 to avoid the speed being too fast and damaging the flocculant colloid, and to scrape the crystallized precipitates on the inner wall of tank 1.

[0061] e: Open valve 3 to allow wastewater to flow into buffer tank 4 first, where it will undergo a first sedimentation. Then, the wastewater with fewer sedimented impurities will flow from the top overflow port 403 through water pipe 405 into sedimentation tank 6 for a second sedimentation. Turn on drive motor 701, and filter mechanism 9 will start to rotate and perform filtration and cleaning operations on the sediment at the bottom of buffer tank 4, the sediment at the bottom of sedimentation tank 6, and the suspended matter on the upper layer of sedimentation tank 6.

[0062] f: Open valve 2 601 to discharge the treated wastewater, open the valve plate to discharge suspended impurities, and open valve 3 801 to discharge the sediment.

[0063] The working principle of precipitated impurity treatment:

[0064] Under the influence of gravity, the sediment accumulates on one side of the bottom of the buffer tank 4 and the sedimentation tank 6 body 1, and enters the primary sedimentation inlet 501A into the primary sedimentation tank inlet 901A, or the secondary sedimentation inlet 501B into the secondary sedimentation tank inlet 901B. As the sedimentation treatment rotor 901 rotates, the mixture of sediment and wastewater moves to the top of the sedimentation chamber 501. Under the influence of gravity, the wastewater and sediment impurities contact the vibrating filter block 902 downwards. The wastewater passes through the filter plate 902C and is discharged into the sedimentation tank 6 from the water passage 502. The sediment impurities accumulate on the filter plate 902C of the vibrating filter block 902. As the protrusion 902D at the bottom of the vibrating filter block 902 contacts the vibrating groove 501D, the vibrating filter block 902 vibrates, shaking the sediment impurities on the filter plate 902C into the slag discharge pipe 8.

[0065] The working principle of suspended impurity treatment:

[0066] Suspended impurities float on the upper layer of the sedimentation tank 6. With the slow flow of water, they enter the suspension chamber 503 from the inlet 503B. Driven by the pusher plate 905, they come into contact with the filter baffle 10 for filtration. The wastewater passes through the filter plate 1002 and continues to flow in the suspension chamber 503 to the outlet 503C for discharge. The filtered suspended impurities fall into the slag discharge pipe 503A. Due to the guiding effect of the baffle plate 603, the wastewater carrying suspended impurities slowly flows from the side of the outlet 503C to the side of the inlet 503B. After filtration, it flows out again from the outlet 503C, forming a slow water circulation flow, which improves the filtration effect.

[0067] This invention utilizes a stirring mechanism 2 with a high-speed forward-rotating drive motor 201 to achieve thorough and rapid mixing of the reagent and wastewater. Adjusting the drive motor 201 to rotate slowly in the reverse direction allows for gentle agitation of the mixed wastewater, preventing the breakage of the newly flocculated colloids and ensuring their adsorption effect. Simultaneously, the power from the transmission shaft 202 is transmitted to the scraper 206, which scrapes the inner wall of the tank 1 to prevent sedimentation and crystallization. A buffer tank 4 prevents the mixed liquid flowing from the tank 1 from scouring the relatively static mixed liquid in the sedimentation tank 6, thus avoiding impact on sedimentation. The buffer tank 4 also serves as a first sedimentation tank, allowing larger particles to settle first, reducing the pressure on the sedimentation tank 6 for wastewater treatment. Furthermore, a filtration mechanism 9 and a fixed shell 5 work together to simultaneously treat the sediment at the bottom of the buffer tank 4, the bottom of the sedimentation tank 6, and the suspended solids on the upper layer of the sedimentation tank 6, significantly improving filtration efficiency and reducing floor space requirements.

Claims

1. A wastewater treatment device for high-purity quartz sand production, characterized in that: The system includes a mixing tank, which comprises a tank body. Support legs are fixedly connected to the bottom of the tank body, and an mounting arm is fixedly connected to the top of the tank body. An agitation mechanism is installed inside the tank body. The agitation mechanism includes a drive motor, which is fixedly connected to the top of the mounting arm. A drive shaft is fixedly connected to the shaft of the drive motor. A diffuser block is fixedly connected to the upper part of the drive shaft, and multiple sets of diffuser rings are fixedly connected to the diffuser block. Multiple sets of agitators are fixedly connected to the middle of the drive shaft. A drive groove is fixedly provided at the bottom of the drive shaft, and a one-way drive ring is rotatably connected to the bottom of the drive shaft. A scraper is fixedly connected to the one-way drive ring. A valve is fixedly connected to the bottom of the tank body. A buffer tank is fixedly provided at the bottom of the valve. A fixed shell is fixedly connected to one side of the buffer tank, and a drive mechanism is fixedly provided at the top of the fixed shell. A filter mechanism is rotatably connected inside the fixed shell. A sedimentation tank is fixedly connected to the other side of the fixed shell. A valve is fixedly connected to the right side wall of the sedimentation tank. An inclined plate assembly is fixedly connected inside the sedimentation tank, and a baffle plate is fixedly connected to the top of the inclined plate assembly. The buffer tank is fixedly provided with a water inlet at the top, which is fixedly connected to the bottom of valve one. The buffer tank is fixedly provided with a slag outlet at the bottom. An overflow outlet is fixedly provided on the upper side wall of the buffer tank. A water tank is fixedly provided at the bottom of the overflow outlet. A water pipe is fixedly connected to the bottom of the water tank. The other end of the water pipe is connected to the lower right side wall of the sedimentation tank. A sedimentation chamber is fixedly provided inside the left side of the fixed shell. A primary sedimentation inlet and a secondary sedimentation inlet are respectively provided on the bottom two sides of the sedimentation chamber. A slag outlet is fixedly opened on both sides of the upper part of the sedimentation chamber. A slag discharge pipe is fixedly connected to the outside of the slag outlet. A valve three is fixedly installed at the bottom of the other end of the slag discharge pipe. Multiple sets of vibration grooves are fixedly provided on the upper inner wall of the sedimentation chamber. A water passage groove is fixedly provided at the bottom of the vibration groove. The water passage groove extends to the right out of the fixed shell. A rotating cavity is fixedly opened in the center of the fixed shell. A suspension chamber is fixedly provided inside the right side of the fixed shell. A compression block is fixedly provided on the top inner wall of the suspension chamber. An inlet and an outlet are respectively opened on both sides of the compression block. A filter baffle is fixedly provided at the bottom of the suspension chamber. A top frame is provided on one side of the filter baffle. A filter plate two is fixedly provided on the other side of the filter baffle. A slag discharge pipe is fixedly provided at the bottom of the filter baffle. A valve plate is provided on the slag discharge pipe. The filtration mechanism includes a connecting shaft. A sedimentation wheel is fixedly connected to the left side of the connecting shaft. The sedimentation wheel is rotatably connected to the sedimentation chamber. A sedimentation trough is fixedly opened on the left side wall of the sedimentation wheel. Two sedimentation troughs are fixedly opened on the right side wall of the sedimentation wheel. Vibrating filter blocks are slidably connected in the first and second sedimentation troughs. A suspension wheel is fixedly connected to the right side of the connecting shaft. The suspension wheel is rotatably connected to the suspension chamber. Multiple sets of installation slots are fixedly opened on the suspension wheel. A compression spring is fixedly connected to the bottom of the installation slot. A pusher plate is fixedly connected to the other end of the compression spring. The pusher plate is slidably connected to the installation slot. The first and second settling troughs are fixedly provided with sliding grooves on their side walls. Slider blocks are fixedly connected to both sides of the vibrating filter block. A second compression spring is fixedly connected to the slider. The other end of the second compression spring is fixedly connected to the inner wall of the sliding groove. The slider and the sliding groove are slidably connected. A filter plate is fixedly connected to the top of the vibrating filter block. A protrusion is fixedly connected to the bottom of the vibrating filter block.

2. The wastewater treatment device for high-purity quartz sand production according to claim 1, characterized in that: Multiple sets of mounting slots are fixedly formed on the inner wall of the unidirectional drive ring. A compression spring is fixedly connected to the bottom of the mounting slot, and a push block is fixedly connected to the other end of the compression spring. The push block is slidably connected to the mounting slot, and a helical tooth is fixedly connected to the front of the push block.

3. The wastewater treatment device for high-purity quartz sand production according to claim 2, characterized in that: The driving mechanism includes a second drive motor, which is fixedly connected to the top of the fixed housing. A small pulley is fixedly connected to the shaft of the second drive motor, a belt is connected to the small pulley, and a large pulley is connected to the other end of the belt. The large pulley is fixedly connected to the front end of the connecting shaft.

4. A treatment method for wastewater from the production of high-purity quartz sand using the device described in claim 3, comprising the following steps: a: Pour the wastewater to be treated into the tank, first add the alkaline neutralizing agent, start the drive motor and make it rotate at high speed to carry out acid-base neutralization treatment; b: Add calcium chloride reagent and keep the drive motor running at high speed to remove fluoride ions from the wastewater; c: Add sodium sulfide reagent and keep the drive motor rotating at high speed to remove heavy metal ions from the wastewater; d: Add flocculant, gradually reduce the rotation speed of the drive motor to keep the flocculant and the fine sediment impurities in the wastewater mixed to form a colloid; and finally adjust the drive motor to rotate slowly in the opposite direction, and use the scraper to stir the tank to avoid the flocculant colloid being damaged by the excessive speed, and scrape the crystallized precipitates on the inner wall of the tank. e: Open valve one to let the wastewater flow into the buffer tank first, where it will undergo a first sedimentation. Then, the wastewater with fewer sediment impurities will flow into the sedimentation tank through the overflow port at the top and the water pipe for a second sedimentation. Turn on drive motor two, and the filtration mechanism will start to rotate and perform filtration and cleaning operations on the sediment at the bottom of the buffer tank, the sediment at the bottom of the sedimentation tank, and the suspended matter on the upper layer of the sedimentation tank. f: Open valve two to discharge the treated wastewater, open the valve plate to discharge suspended impurities, and open valve three to discharge the sediment.

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