A kind of equipment and method for removing fluorine from mine water

Abstract

The present invention relates to the technical field of wastewater treatment, specifically to a defluorination device and method for mine water, comprising a defluorination tank, a pH adjustment tank and a flocculation tank connected in sequence, a drainage mechanism is provided between the defluorination tank and the pH adjustment tank, and between the pH adjustment tank and the flocculation tank; the drainage mechanism comprises a drainage shell and a sliding water retaining cloth, a drainage nozzle is provided in the middle of the water retaining cloth, a sealing plate is provided at one end of the drainage nozzle, and an extrusion airbag is provided on the outer side of the water retaining cloth, and the extrusion airbag is used to squeeze the sealing plate. The present invention rewinds the water retaining cloth by a rewinding motor to achieve the purpose of moving the drainage nozzle up and down, and the upper clear liquid of the sewage can be discharged by adjusting the height of the drainage nozzle, and large particles of impurities are left at the bottom of the defluorination tank or the pH adjustment tank, and then uniformly discharged into the interior of the sedimentation tank and uniformly treated, thereby greatly improving the quality and efficiency of purification.

Description

Technical Field

[0001] The invention relates to a defluorination device and a method thereof, in particular to a defluorination device and a method thereof for mine water, belonging to the technical field of wastewater treatment. Background Art

[0002] When the fluoride content in drinking water is too high, fluoride will combine with calcium in the teeth, causing chalky or yellowish-brown patches to appear on the tooth surface. In severe cases, the tooth surface will become uneven, and even abnormal tooth shape may occur. This is called dental fluorosis. Dental fluorosis not only affects the appearance, but may also affect the function of the teeth. Excessive fluoride will interfere with the normal mineralization process of the teeth, causing the tooth enamel to become fragile and easily eroded by acid, causing caries.

[0003] Mine water usually contains excessive fluoride. Long-term discharge will not only pollute the environment, but also affect human health. The most widely used defluoridation method currently has the problems of cumbersome operation and large footprint. In the defluoridation process, defluoridation, pH adjustment and flocculation operations need to be carried out in sequence. The existing method is to discharge the sewage into each container in turn, which will waste a lot of time, reduce the purification efficiency, and waste a lot of electricity resources. In addition, impurities will appear in each process flow, and repeated impurity removal and purification are required during the purification process, which consumes resources and reduces the purification quality.

[0004] Therefore, it is urgent to improve the defluorination equipment for mine water to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a mine water defluorination device and method thereof, wherein the water retaining cloth is reeled in by a reeling motor to achieve the purpose of moving the drain nozzle up and down, and the upper clear liquid of the sewage can be discharged by adjusting the height of the drain nozzle, and large particles of impurities are left at the bottom of the defluorination tank or the pH adjustment tank, and then uniformly discharged into the interior of the sedimentation tank and uniformly treated, thereby greatly improving the quality and efficiency of purification.

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] A defluorination device for mine water, comprising a defluorination tank, a pH adjustment tank and a flocculation tank which are connected in sequence, wherein a drainage mechanism is fixedly arranged between the defluorination tank and the pH adjustment tank and between the pH adjustment tank and the flocculation tank;

[0008] The drainage mechanism includes a drainage shell and a water retaining cloth slidably arranged inside the drainage shell, a drainage nozzle is fixedly arranged in the middle of the water retaining cloth, the drainage nozzle passes through the defluorination tank or the pH adjustment tank, both ends of the water retaining cloth are connected to a winding motor, the winding motor is used to wind up the water retaining cloth, a sealing plate is slidably arranged at one end of the drainage nozzle, a sealing plate guide rod is connected to one end of the sealing plate, the sealing plate guide rod is slidably arranged inside the drainage nozzle, a guide rod support block is fixedly arranged inside the drainage nozzle, the sealing plate guide rod is slidably arranged inside the guide rod support block, a spring is arranged between the sealing plate and the guide rod support block, the spring is used to squeeze the sealing plate, and a plurality of squeezing air bags are arranged on the outer side of the water retaining cloth, the squeezing air bags are used to squeeze the sealing plate.

[0009] Preferably, a density sensor is fixedly provided on the sealing plate, the density sensor is electrically connected to a central processing chip, a solenoid valve is provided on the drain nozzle, the solenoid valve is electrically connected to the central processing chip, a drain nozzle slide groove is provided in the middle of the drain housing, the drain nozzle is slidably provided inside the drain nozzle slide groove, a water retaining cloth guide groove is provided inside the drain nozzle slide groove, and the water retaining cloth is slidably provided inside the water retaining cloth guide groove;

[0010] A plurality of evenly distributed metal reinforcing rods are fixedly arranged inside the water retaining cloth, a motor box is fixedly arranged at both ends of the drainage shell, and the winding motor is fixedly arranged inside the motor box through a winding motor support block.

[0011] Preferably, the heights of the defluorination tank, the pH adjustment tank and the flocculation tank are successively reduced, a waste liquid tank is provided on one side of the defluorination tank, a lifting pump is provided inside the waste liquid tank, and the lifting pump is connected to the defluorination tank through a lifting pipe.

[0012] Preferably, a sedimentation tank is provided on one side of the flocculation tank, and the flocculation tank is connected to the interior of the sedimentation tank through a conveying pipe;

[0013] The bottom of the defluorination tank and the pH adjustment tank is connected to the interior of the sedimentation tank through a sewage pipe, and a sewage pump is fixedly arranged on the sewage pipe, and the sewage pump is used to extract the sediment at the bottom of the defluorination tank or the pH adjustment tank;

[0014] The sedimentation tank is connected with a clean water outlet, and the bottom of the sedimentation tank is connected with a sludge outlet.

[0015] Preferably, a mud discharge telescopic rod is fixedly arranged above the sedimentation tank, a mud discharge motor is arranged at the output end of the mud discharge telescopic rod, a mud discharge plate is arranged at the output end of the mud discharge motor, and the mud discharge plate corresponds to the bottom of the sedimentation tank;

[0016] The bottom of the mud discharge plate is connected with a mud discharge plug, which is fixedly arranged at the bottom of the mud discharge plate through a bearing, wherein when the water retaining cloth moves downward, the mud discharge plug is used to seal the mud outlet.

[0017] Preferably, a reflux pump is fixedly provided on the mud discharge telescopic rod, the input end of the reflux pump is connected to the interior of the sedimentation tank through a reflux pipe, and the output end of the reflux pump is connected to the interior of the defluorination tank through the reflux pipe.

[0018] Preferably, a support frame is provided at the bottom of the sedimentation tank, a sedimentation tank support block is fixedly provided on the support frame, the sedimentation tank is fixedly provided on the sedimentation tank support block, a mud discharge telescopic rod support block is fixedly provided on the sedimentation tank support block, the mud discharge telescopic rod is fixedly provided on the mud discharge telescopic rod support block, a stirring motor support block is fixedly provided on the mud discharge telescopic rod support block, and the defluorination tank, the pH adjustment tank and the flocculation tank are all fixedly provided on the stirring motor support block;

[0019] The waste liquid pool is fixedly arranged on the support frame through a waste liquid pool support block.

[0020] Preferably, a stirring motor is disposed above the defluorination tank, the pH adjustment tank and the flocculation tank. The stirring motor is fixedly disposed on the stirring motor support block, and an output end of the stirring motor is connected with stirring teeth via a stirring shaft.

[0021] Preferably, the defluorination tank is filled with an inorganic salt defluorination agent, the pH adjustment tank is filled with alkali solution, the flocculation tank is filled with PAM polyacrylamide, and the sedimentation tank is filled with a coagulant aid.

[0022] A process for defluorination equipment for mine water, comprising the following steps:

[0023] Step 1: Adsorption and coagulation. The wastewater in the waste liquid pool is first lifted into the defluorination tank through the lifting pipe by a lifting pump for treatment. A defluoridation agent is added to the sewage at a certain flow rate. The defluoridation agent is stirred under the action of hydraulic power and a stirring motor so that the defluoridation agent and the sewage are fully in contact and react. The fluoride ions in the sewage are adsorbed and coagulated under the action of the defluoridation agent. After standing, the fluoride ions flow to the pH adjustment tank together with the sewage through the drainage mechanism.

[0024] Step 2: pH adjustment: After the sewage enters the pH adjustment tank, the pH value of the sewage is controlled within a suitable range by adding alkali solution. After standing, the sewage flows through the drainage mechanism to the inside of the flocculation tank together with the sewage.

[0025] Step 3: Flocculation separation. After the sewage enters the flocculation tank, PAM polyacrylamide is added for stirring. Under the action of hydraulic power and stirring motor, PAM polyacrylamide contacts and acts on the sewage, making the coagulated insoluble colloidal particles gradually larger to form a flower-like colloidal substance, achieving a better separation effect between the insoluble matter and the water phase.

[0026] Step 4: Sedimentation and separation. After adsorption coagulation, pH adjustment, and flocculation separation, the solid phase is separated from the water phase by entering the sedimentation tank. The clean water overflows through the clean water outlet, and the solid fluorine-containing particles form physical and chemical sludge and are discharged through the sludge outlet.

[0027] Step 5: Subsequent treatment: the fluoride ion concentration in the clean water meets the standard before discharge or utilization, and the sludge formed during the coagulation process is dehydrated and then treated externally.

[0028] The present invention has at least the following beneficial effects:

[0029] 1. In the process of adjusting the drain nozzle, the height of the drain nozzle can be moved by moving the water retaining cloth. Therefore, in the process of adjusting the drain nozzle, the water retaining cloth can be rolled up by the winding motor to achieve the purpose of moving the drain nozzle downward. Due to the deposition of a small amount of impurities at the bottom of the defluorination tank or the pH adjustment tank during adsorption coagulation and pH adjustment, the height of the drain nozzle can be adjusted to discharge the upper clear liquid first, and then the upper clear liquid can be processed to improve the purification efficiency.

[0030] 2. When drainage is required, the drain nozzle is moved downward through the water retaining cloth. After the squeezing airbag on the drain nozzle is squeezed to a certain extent, its volume is reduced, so that the squeezing airbag is in a compressed state. The sealing plate moves outward under the action of the spring, and the sewage is discharged into the pH adjustment tank and the flocculation tank through the drain nozzle. Therefore, by adjusting the height of the drain nozzle, the upper clear liquid of the sewage can be discharged, and large particles of impurities are left at the bottom of the defluorination tank or the pH adjustment tank.

[0031] 3. In order to leave impurities at the bottom of the defluorination tank or the pH adjustment tank, a density sensor is fixedly installed on the outer side of the sealing plate. The density sensor can detect the density of the sewage. When the drain nozzle moves downward, the density sensor can detect the difference between clear liquid and turbid liquid, and the density of turbid liquid is relatively large. When the density sensor detects turbid liquid, it transmits the information to the central processing chip, and the central processing chip transmits the information to the solenoid valve. In addition, with the increase of depth, the pressure of the liquid increases, and the solenoid valve on the water retaining cloth is squeezed, so that the clear liquid layer enters the interior of the drain nozzle between the sealing plate and the water retaining cloth and is discharged, and the upper clear liquid flows out of the drain nozzle.

[0032] 4. A certain amount of large particles of impurities will gather at the bottom of the defluorination tank and the pH adjustment tank. If they enter the pH adjustment tank or the flocculation tank together, they need to be removed repeatedly. Therefore, after starting the sewage pump, the large particles of impurities at the bottom of the defluorination tank or the pH adjustment tank are pumped into the sedimentation tank through the sewage pipe for unified treatment, which reduces the time consumed by impurities removal and improves the processing efficiency. After the sewage enters the sedimentation tank, the coagulant is added. After the stirring is completed, the solid and liquid are separated, and the upper clear liquid is discharged through the clean water outlet. After the upper clear liquid is discharged, the solid objects are discharged through the sludge outlet.

[0033] 5. A mud discharge plug is fixedly provided at the bottom of the mud discharge plate. After starting the mud discharge telescopic rod, the mud discharge plug is moved downward by the mud discharge motor. When the sludge needs to be discharged, the mud discharge plug is pulled out from the sludge outlet through the mud discharge telescopic rod to facilitate the discharge of the sludge. Once it is detected that the solution in the sedimentation tank does not meet the standard, the reflux pump is started to pump the solution in the sedimentation tank into the waste liquid tank again through the reflux pipe for purification again, thereby improving the quality of purification. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0035] Figure 1 It is a partial structural diagram of the present invention;

[0036] Figure 2 The drainage mechanism of the present invention is cut away Figure 1 ;

[0037] Figure 3 It is a structural diagram of the drainage mechanism of the present invention;

[0038] Figure 4 A perspective view of the present invention;

[0039] Figure 5 It is a structural diagram of the support frame of the present invention;

[0040] Figure 6 The stirring motor structure diagram of the present invention;

[0041] Figure 7 It is the structural diagram of the defluorination pool of the present invention;

[0042] Figure 8 It is a three-dimensional diagram of the drainage mechanism of the present invention;

[0043] Fig. 9 The drainage mechanism of the present invention is cut away Figure 2 ;

[0044] Fig.10 A three-dimensional diagram of the mud discharge telescopic rod of the present invention;

[0045] Fig.11 It is a partial cross-sectional view of the present invention;

[0046] Fig.12 It is a schematic diagram of the process flow of the present invention.

[0047] In the figure, 1, waste liquid tank; 2, defluorination tank; 3, pH adjustment tank; 4, flocculation tank; 5, sedimentation tank; 501, clean water outlet; 502, sludge outlet; 6, drainage mechanism; 601, drainage shell; 602, water retaining cloth; 603, drainage nozzle; 604, solenoid valve; 605, sealing plate; 606, extrusion airbag; 607, sealing plate guide rod; 608, guide rod support block; 609, spring; 610, density sensor; 611, motor box; 612, winding motor; 613, winding motor support block; 614, retaining Water cloth guide groove; 615, drainage nozzle slide; 616, metal reinforcement rod; 7, support frame; 701, waste liquid pool support block; 702, mud discharge telescopic rod support block; 703, stirring motor support block; 704, sedimentation tank support block; 8, stirring motor; 801, stirring shaft; 802, stirring teeth; 9, mud discharge telescopic rod; 901, mud discharge motor; 902, mud discharge plate; 903, mud discharge plug; 10, sewage pipe; 11, sewage pump; 12, delivery pipe; 13, reflux pipe; 14, reflux pump; 15, lifting pipe; 16, lifting pump. DETAILED DESCRIPTION

[0048] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0049] like Figure 1-Figure 12 As shown, the mine water defluorination equipment provided in this embodiment includes a defluorination tank 2, a pH adjustment tank 3 and a flocculation tank 4 which are connected in sequence. The defluorination tank 2 is filled with an inorganic salt defluoridant, the pH adjustment tank 3 is filled with an alkali solution, the flocculation tank 4 is filled with PAM polyacrylamide, and the sedimentation tank 5 is filled with a coagulant. A drainage mechanism 6 is fixedly arranged between the defluorination tank 2 and the pH adjustment tank 3 and between the pH adjustment tank 3 and the flocculation tank 4. The defluorination tank 2 is used for adsorption and coagulation of sewage, the pH adjustment tank 3 is used for pH adjustment of sewage, and the flocculation tank 4 is used for flocculation and separation of sewage. The mechanism is simple, and the upper clear liquid is sequentially discharged through the drainage mechanism 6, and impurities and large particle impurities are deposited at the bottom of the defluorination tank 2, the pH adjustment tank 3 and the flocculation tank 4, thereby improving the removal rate of fluoride ions.

[0050] When the sewage passes through the defluorination tank 2, the pH adjustment tank 3 and the flocculation tank 4 in sequence, the drainage mechanism 6 is arranged between the defluorination tank 2 and the pH adjustment tank 3 and between the pH adjustment tank 3 and the flocculation tank 4. The drainage mechanism 6 includes a drainage shell 601 and a water retaining cloth 602 slidably arranged inside the drainage shell 601. A drainage nozzle 603 is fixedly arranged in the middle of the water retaining cloth 602. A drainage nozzle 603 is fixedly arranged in the middle of the water retaining cloth 602. The drainage nozzle 603 can introduce the sewage in the defluorination tank 2 into the interior of the pH adjustment tank 3, and introduce the sewage in the pH adjustment tank 3 into the interior of the flocculation tank 4. At the same time, by adjusting the height of the drainage nozzle 603, the upper layer of liquid in the defluorination tank 2 can be discharged into the pH adjustment tank 3, and the upper layer of liquid in the pH adjustment tank 3 can be discharged into the flocculation tank 4. In the condensation tank 4, the drainage nozzle 603 passes through the defluorination tank 2 or the pH adjustment tank 3, and both ends of the water retaining cloth 602 are connected to the winding motor 612, and the winding motor 612 is used to roll up the water retaining cloth 602. In the process of adjusting the drainage nozzle 603, the height of the drainage nozzle 603 can be moved by moving the water retaining cloth 602. Therefore, in the process of adjusting the drainage nozzle 603, the water retaining cloth 602 can be rolled up by the winding motor 612. For example, when it is necessary to move the drainage nozzle 603 upward, the water retaining cloth 602 is rolled up by starting the winding motor 612 at the upper end, so that the drainage nozzle 603 moves upward. Similarly, the purpose of moving the drainage nozzle 603 downward can be achieved by starting the winding motor 612 at the lower end to roll up the water retaining cloth 602.

[0051] Since a small amount of impurities will be deposited at the bottom of the defluorination tank 2 or the pH adjustment tank 3 during adsorption coagulation and pH adjustment, the upper clear liquid can be discharged first by adjusting the height of the drain nozzle 603, and then the upper clear liquid can be processed to improve the purification efficiency;

[0052] In addition, in the process of draining the supernatant, a sealing plate 605 is slidably provided at one end of the drain nozzle 603, and 605 seals the drain nozzle 603, so that the drain nozzle 603 is in a closed state. After the reaction is completed, the drain nozzle 603 is moved to a certain height by the water retaining cloth 602, and a sealing plate guide rod 607 is connected to one end of the sealing plate 605, and the sealing plate guide rod 607 is slidably provided inside the drain nozzle 603, and a guide rod support block 608 is fixedly provided inside the drain nozzle 603, and the sealing plate guide rod 607 is slidably provided inside the guide rod support block 608, and the sealing plate 605 and the guide rod support block 608 are fixedly provided inside the drain nozzle 603. A spring 609 is provided between the support blocks 608, and the spring 609 is used to squeeze the sealing plate 605. A plurality of squeezing airbags 606 are provided on the outer side of the water retaining cloth 602, and the squeezing airbags 606 are used to squeeze the sealing plate 605. One side of the sealing plate 605 abuts against the drainage nozzle 603, and slides inside the guide rod support block 608 through the sealing plate guide rod 607, and is supported by the spring 609. The outer side of the sealing plate 605 squeezes the sealing plate 605 under the action of the squeezing airbag 606, so that one side of the sealing plate 605 is in contact with the drainage nozzle 603 to achieve the purpose of sealing the drainage nozzle 603;

[0053] When drainage is required, the drainage nozzle 603 is moved downward by the water retaining cloth 602. After the squeezing airbag 606 on the drainage nozzle 603 is squeezed to a certain extent, the volume is reduced, so that the squeezing airbag 606 is in a compressed state, and the sealing plate 605 moves outward under the action of the spring 609, and the sewage is discharged into the pH adjustment tank 3 and the flocculation tank 4 through the drainage nozzle 603. Therefore, by adjusting the height of the drainage nozzle 603, the upper clear liquid of the sewage can be discharged, and large particles of impurities are left at the bottom of the defluorination tank 2 or the pH adjustment tank 3;

[0054] In addition, in order to facilitate the removal of impurities from the bottom of the defluorination tank 2 or the pH adjustment tank 3, a density sensor 610 is fixedly arranged on the sealing plate 605, and the density sensor 610 is electrically connected to the central processing chip. A solenoid valve 604 is arranged on the drain nozzle 603, and the solenoid valve 604 is electrically connected to the central processing chip. A drain nozzle chute 615 is provided in the middle of the drainage shell 601, and the drain nozzle 603 is slidably arranged inside the drain nozzle chute 615. A water retaining cloth guide groove 614 is provided inside the drain nozzle chute 615, and the water retaining cloth 602 is slidably arranged inside the water retaining cloth guide groove 614. A density sensor 610 is fixedly arranged on the outer side of the sealing plate 605, and the density sensor 610 can detect the density of sewage. When the drain nozzle 603 moves downward, the density sensor 610 can detect the difference between clear liquid and turbid liquid, and the density of turbid liquid is larger. When the density sensor 610 detects turbid liquid, the information is transmitted to the central Processing chip, the central processing chip transmits information to the solenoid valve 604. In addition, as the depth increases, the pressure of the liquid increases, and the squeezing airbag 606 on the water retaining cloth 602 is squeezed, so that the clear liquid layer between the sealing plate 605 and the water retaining cloth 602 enters the interior of the drainage nozzle 603 and is discharged, and the upper clear liquid flows out from the drainage nozzle 603. A plurality of evenly distributed metal reinforcing rods 616 are fixedly arranged inside the water retaining cloth 602, and a drainage shell 601 is fixedly arranged inside the water retaining cloth 602. The drainage shell 601 plays a certain supporting role on the water retaining cloth 602, and improves the sealing effect of the water retaining cloth 602 on the drainage shell 601. Motor boxes 611 are fixedly arranged at both ends of the drainage shell 601, and the winding motor 612 is fixedly arranged inside the motor box 611 through the winding motor support block 613. The winding motor 612 is fixedly arranged inside the motor box 611 to improve the stability of the winding motor 612.

[0055] Further, such as Figure 1 , Figure 4 as well as Figure 7 As shown, the heights of the defluorination tank 2, the pH adjustment tank 3 and the flocculation tank 4 are successively reduced, a waste liquid tank 1 is arranged on one side of the defluorination tank 2, a lifting pump 16 is arranged inside the waste liquid tank 1, and the lifting pump 16 is connected with the defluorination tank 2 through a lifting pipe 15. The heights of the defluorination tank 2, the pH adjustment tank 3 and the flocculation tank 4 are successively reduced, and the gravity of the water can accelerate the discharge of the upper liquid, without consuming additional resources, thereby improving the utilization rate of resources, and the sewage in the waste liquid tank 1 can be pumped into the defluorination tank 2 through the lifting pipe 15 by the lifting pump 16, the structure is simple, and the efficiency of defluorination is improved;

[0056] Moreover, a sedimentation tank 5 is arranged on one side of the flocculation tank 4, and the flocculation tank 4 is connected to the interior of the sedimentation tank 5 through a delivery pipe 12. After PAM polyacrylamide is added to the flocculation tank 4, it is directly discharged into the interior of the sedimentation tank 5 through the delivery pipe 12 under the action of water gravity for sedimentation and separation;

[0057] The bottom of the defluorination tank 2 and the pH adjustment tank 3 are connected to the interior of the sedimentation tank 5 through a sewage pipe 10. A sewage pump 11 is fixedly provided on the sewage pipe 10. The sewage pump 11 is used to extract the sediment at the bottom of the defluorination tank 2 or the pH adjustment tank 3. A certain amount of large particle impurities will gather at the bottom of the defluorination tank 2 and the pH adjustment tank 3. If they enter the interior of the pH adjustment tank 3 or the flocculation tank 4 together, they need to be repeatedly removed. Therefore, after starting the sewage pump 11, the large particle impurities at the bottom of the defluorination tank 2 or the pH adjustment tank 3 are pumped into the interior of the sedimentation tank 5 through the sewage pipe 10 for unified treatment, thereby reducing the time consumed by the removal of impurities and improving the processing efficiency;

[0058] The sedimentation tank 5 is connected to a clean water outlet 501. After the sewage enters the sedimentation tank 5, a coagulant is added. After the stirring is completed, the solid and liquid are separated, and the upper clear liquid is discharged through the clean water outlet 501. The bottom of the sedimentation tank 5 is connected to a sludge outlet 502. After the upper clear liquid is discharged, the solid objects are discharged through the sludge outlet 502.

[0059] Furthermore, Figure 5 , Figure 6 as well as Fig.10 As shown, a mud discharge telescopic rod 9 is fixedly arranged above the sedimentation tank 5, a mud discharge motor 901 is arranged at the output end of the mud discharge telescopic rod 9, a mud discharge plate 902 is arranged at the output end of the mud discharge motor 901, and the mud discharge plate 902 corresponds to the bottom of the sedimentation tank 5. A mud discharge telescopic rod 9 is arranged above the sedimentation tank 5, and the solution in the sedimentation tank 5 is stirred by the mud discharge plate 902 on the mud discharge telescopic rod 9, and the sludge can also be stirred by the mud discharge plate 902 for convenient discharge;

[0060] The bottom of the mud discharge plate 902 is connected with a mud discharge plug 903, which is fixedly arranged at the bottom of the mud discharge plate 902 through a bearing. The mud discharge plug 903 is fixedly arranged at the bottom of the mud discharge plate 902. After the mud discharge telescopic rod 9 is started, the mud discharge plug 903 is moved downward by the mud discharge motor 901. When the water retaining cloth 602 moves downward, the mud discharge plug 903 is used to seal the mud outlet 502. When the mud needs to be discharged, the mud discharge plug 903 is pulled out from the mud outlet 502 by the mud discharge telescopic rod 9 to facilitate the discharge of the mud.

[0061] A reflux pump 14 is fixedly arranged on the sludge discharge telescopic rod 9, and the input end of the reflux pump 14 is connected with the interior of the sedimentation tank 5 through the reflux pipe 13, and the output end of the reflux pump 14 is connected with the interior of the defluorination tank 2 through the reflux pipe 13. Once it is detected that the solution in the sedimentation tank 5 does not meet the standard, the reflux pump 14 is started, and the solution in the sedimentation tank 5 is pumped into the interior of the waste liquid tank 1 again through the reflux pipe 13 for purification again, thereby improving the purification quality.

[0062] Further, if Figure 4 , Figure 5 as well as Fig.11 As shown, a support frame 7 is provided at the bottom of the sedimentation tank 5, and a sedimentation tank support block 704 is fixedly provided on the support frame 7, the sedimentation tank 5 is fixedly provided on the sedimentation tank support block 704, a mud discharge telescopic rod support block 702 is fixedly provided on the sedimentation tank support block 704, a mud discharge telescopic rod 9 is fixedly provided on the mud discharge telescopic rod support block 702, a stirring motor support block 703 is fixedly provided on the mud discharge telescopic rod support block 702, the defluorination tank 2, the pH adjustment tank 3 and the flocculation tank 4 are all fixedly provided on the stirring motor support block 703, the waste liquid tank 1 is fixedly provided on the support frame 7 through the waste liquid tank support block 701, and the waste liquid tank 1 is fixedly provided on the support frame 7 through the waste liquid tank support block 701, so as to improve the stability of the support frame 7, and the defluorination tank 2, the pH adjustment tank 3, the flocculation tank 4 and the sedimentation tank 5 are fixed by the support frame 7, so as to improve the overall structural strength, and then improve the overall stability;

[0063] A stirring motor 8 is provided above the defluorination tank 2, the pH adjustment tank 3 and the flocculation tank 4. The stirring motor 8 is fixedly provided on the stirring motor support block 703. The output end of the stirring motor 8 is connected to a stirring tooth 802 through a stirring shaft 801. After the stirring motor 8 is started, the stirring tooth 802 on the stirring motor 8 stirs the solution to increase the reaction rate.

[0064] like Figure 1-Figure 12 As shown, the process method for mine water defluorination equipment provided in this embodiment includes the following steps:

[0065] Step 1: adsorption and coagulation. The wastewater in the waste liquid pool 1 is first lifted by the lifting pump 16 through the lifting pipe 15 into the defluorination pool 2 for treatment. A defluoridation agent is added to the wastewater at a certain flow rate. The defluoridation agent is stirred under the action of hydraulic power and the stirring motor 8 so that the defluoridation agent and the wastewater are fully in contact and react. The fluoride ions in the wastewater are adsorbed and coagulated under the action of the defluoridation agent. After standing, the wastewater flows through the drainage mechanism 6 together with the wastewater to the inside of the pH adjustment pool 3.

[0066] Step 2: pH adjustment. After the sewage enters the pH adjustment tank 3, the pH value of the sewage is controlled within a suitable range by adding alkali solution. After standing, the sewage flows through the drainage mechanism 6 to the flocculation tank 4 together with the sewage.

[0067] Step 3: flocculation separation. After the sewage enters the flocculation tank 4, PAM polyacrylamide is added for stirring. Under the action of hydraulic power and stirring motor 8, PAM polyacrylamide contacts and acts on the sewage, so that the flocculated insoluble colloidal particles gradually become larger to form a flower-like colloidal substance, thereby achieving a better separation effect of the insoluble matter and the water phase.

[0068] Step 4: Sedimentation and separation. After adsorption coagulation, pH adjustment, and flocculation separation, the particles enter the sedimentation tank 5 for sedimentation to separate the solid phase from the water phase. The clean water overflows through the clean water outlet 501, and the solid fluorine-containing particles form physical and chemical sludge and are discharged through the sludge outlet 502.

[0069] Step 5: Subsequent treatment: the fluoride ion concentration in the clean water meets the standard before discharge or utilization, and the sludge formed during the coagulation process is dehydrated and then treated externally.

[0070] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0071] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0072] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A defluorination device for mine water, comprising a defluorination tank (2), a pH adjustment tank (3) and a flocculation tank (4) connected in sequence, characterized in that: A drainage mechanism (6) is fixedly arranged between the defluorination tank (2) and the pH adjustment tank (3), and between the pH adjustment tank (3) and the flocculation tank (4); The drainage mechanism (6) comprises a drainage housing (601) and a water retaining cloth (602) slidably arranged inside the drainage housing (601); a drainage nozzle (603) is fixedly arranged in the middle of the water retaining cloth (602); the drainage nozzle (603) penetrates the defluorination tank (2) or the pH adjustment tank (3); both ends of the water retaining cloth (602) are connected to a winding motor (612); the winding motor (612) is used to wind up the water retaining cloth (602); a sealing plate (605) is slidably arranged at one end of the drainage nozzle (603); one end of the sealing plate (605) is connected to a sealing plate guide rod (607) ), the sealing plate guide rod (607) is slidably arranged inside the drainage nozzle (603), a guide rod support block (608) is fixedly arranged inside the drainage nozzle (603), the sealing plate guide rod (607) is slidably arranged inside the guide rod support block (608), a spring (609) is arranged between the sealing plate (605) and the guide rod support block (608), the spring (609) is used to squeeze the sealing plate (605), and a plurality of squeezing air bags (606) are arranged on the outer side surface of the water retaining cloth (602), the squeezing air bags (606) are used to squeeze the sealing plate (605).

2. The defluorination equipment for mine water according to claim 1, characterized in that: A density sensor (610) is fixedly arranged on the sealing plate (605), and a central processing chip is electrically connected to the density sensor (610). A solenoid valve (604) is arranged on the drain nozzle (603), and the solenoid valve (604) is electrically connected to the central processing chip. A drain nozzle slide groove (615) is provided in the middle of the drain housing (601), and the drain nozzle (603) is slidably arranged inside the drain nozzle slide groove (615). A water retaining cloth guide groove (614) is provided inside the drain nozzle slide groove (615), and the water retaining cloth (602) is slidably arranged inside the water retaining cloth guide groove (614); A plurality of evenly distributed metal reinforcing rods (616) are fixedly disposed inside the water retaining cloth (602), a motor box (611) is fixedly disposed at both ends of the drainage housing (601), and the winding motor (612) is fixedly disposed inside the motor box (611) via a winding motor support block (613).

3. The defluorination equipment for mine water according to claim 1, characterized in that: The heights of the defluorination tank (2), the pH adjustment tank (3) and the flocculation tank (4) are successively lowered; a waste liquid tank (1) is provided on one side of the defluorination tank (2); a lifting pump (16) is provided inside the waste liquid tank (1); and the lifting pump (16) is connected to the defluorination tank (2) via a lifting pipe (15).

4. The defluorination equipment for mine water according to claim 3, characterized in that: A sedimentation tank (5) is provided on one side of the flocculation tank (4), and the flocculation tank (4) is connected to the interior of the sedimentation tank (5) via a delivery pipe (12). The bottom of the defluorination tank (2) and the pH adjustment tank (3) are connected to the interior of the sedimentation tank (5) via a sewage pipe (10); a sewage pump (11) is fixedly arranged on the sewage pipe (10), and the sewage pump (11) is used to extract sediment from the bottom of the defluorination tank (2) or the pH adjustment tank (3); The sedimentation tank (5) is connected to a clean water outlet (501), and the bottom of the sedimentation tank (5) is connected to a sludge outlet (502).

5. The defluorination equipment for mine water according to claim 4, characterized in that: A mud discharge telescopic rod (9) is fixedly arranged above the sedimentation tank (5); a mud discharge motor (901) is arranged at the output end of the mud discharge telescopic rod (9); a mud discharge plate (902) is arranged at the output end of the mud discharge motor (901); and the mud discharge plate (902) corresponds to the bottom of the sedimentation tank (5); The bottom of the mud discharge plate (902) is connected to a mud discharge plug (903), and the mud discharge plug (903) is fixedly arranged at the bottom of the mud discharge plate (902) via a bearing, wherein when the water retaining cloth (602) moves downward, the mud discharge plug (903) is used to seal the sludge outlet (502).

6. The defluorination equipment for mine water according to claim 5, characterized in that: A reflux pump (14) is fixedly arranged on the sludge discharge telescopic rod (9); the input end of the reflux pump (14) is connected to the interior of the sedimentation tank (5) through a reflux pipe (13); and the output end of the reflux pump (14) is connected to the interior of the defluorination tank (2) through the reflux pipe (13).

7. The defluorination equipment for mine water according to claim 6, characterized in that: A support frame (7) is provided at the bottom of the sedimentation tank (5), a sedimentation tank support block (704) is fixedly provided on the support frame (7), the sedimentation tank (5) is fixedly provided on the sedimentation tank support block (704), a mud discharge telescopic rod support block (702) is fixedly provided on the sedimentation tank support block (704), the mud discharge telescopic rod (9) is fixedly provided on the mud discharge telescopic rod support block (702), a stirring motor support block (703) is fixedly provided on the mud discharge telescopic rod support block (702), and the defluorination tank (2), the pH adjustment tank (3) and the flocculation tank (4) are all fixedly provided on the stirring motor support block (703); The waste liquid pool (1) is fixedly arranged on the support frame (7) via a waste liquid pool support block (701).

8. The defluorination equipment for mine water according to claim 7, characterized in that: A stirring motor (8) is arranged above the defluorination tank (2), the pH adjustment tank (3) and the flocculation tank (4); the stirring motor (8) is fixedly arranged on the stirring motor support block (703); and an output end of the stirring motor (8) is connected to a stirring tooth (802) via a stirring shaft (801).

9. The defluorination equipment for mine water according to claim 8, characterized in that: The interior of the defluorination tank (2) is filled with an inorganic salt defluorination agent, the interior of the pH adjustment tank (3) is filled with an alkali solution, the interior of the flocculation tank (4) is filled with PAM polyacrylamide, and the interior of the sedimentation tank (5) is filled with a coagulant aid.

10. A process for defluorination equipment for mine water, characterized in that: The device for removing fluorine from mine water according to claim 1 is used, comprising the following steps: Step 1: adsorption and coagulation, using a lifting pump (16) to lift the wastewater from the waste liquid pool (1) through a lifting pipe (15) into the defluorination pool (2) for treatment, adding a defluoridation agent to the wastewater at a certain flow rate, stirring under the action of hydraulic power and a stirring motor (8) so that the defluoridation agent and the wastewater are fully in contact and react, and the fluoride ions in the wastewater are adsorbed and coagulated under the action of the defluoridation agent, and after standing, the wastewater flows through a drainage mechanism (6) together with the wastewater to the inside of the pH adjustment pool (3); Step 2: pH adjustment. After the sewage enters the pH adjustment tank (3), the pH value of the sewage is controlled within a suitable range by adding alkali solution. After standing, the sewage flows through the drainage mechanism (6) together with the sewage to the inside of the flocculation tank (4). Step 3: flocculation separation. After the sewage enters the flocculation tank (4), PAM polyacrylamide is added for stirring. Under the action of hydraulic power and stirring motor (8), PAM polyacrylamide contacts and acts on the sewage, causing the flocculated insoluble colloidal particles to gradually grow larger to form a flower-like colloidal substance, thereby achieving a better separation effect between the insoluble matter and the water phase. Step 4: Sedimentation and separation. After adsorption coagulation, pH adjustment, and flocculation separation, the solid phase is separated from the water phase by entering the sedimentation tank (5). Clean water overflows through the clean water outlet (501), and the solid fluorine-containing particles form physical and chemical sludge and are discharged through the sludge outlet (502). Step 5: Subsequent treatment: the fluoride ion concentration in the clean water meets the standard before discharge or utilization, and the sludge formed during the coagulation process is dehydrated and then treated externally.

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