An energy-saving device for treating fluoride-containing wastewater

Abstract

This utility model discloses an energy-saving device for treating fluoride-containing wastewater, including a sedimentation tank, a mixing tank on the side of the sedimentation tank, and a mixing component on the inner side of the mixing tank. The mixing component includes a support frame, which is rotatably mounted inside the mixing tank. Multiple spiral mixing frames are rotatably connected to the support frame, and a main mixing shaft is fixedly connected to the inner side of the support frame. A mixing fan blade is installed at the bottom of the main mixing shaft. A packing layer is installed inside the sedimentation tank, and a sludge pump is installed at the bottom of the sedimentation tank. An effluent tank is located on the side of the sedimentation tank away from the mixing tank. This design allows the mixing tank to occupy a small area. The rotation of the support frame drives the multiple spiral mixing frames to move in a circular motion, while the mixing fan blade at the bottom of the main mixing shaft also participates in the mixing. This multi-dimensional mixing method can quickly and thoroughly mix the fluoride-containing wastewater with the treatment agent, significantly shortening the mixing time and helping to more effectively remove fluoride ions from the wastewater.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and in particular to an energy-saving device for treating fluoride-containing wastewater. Background Technology

[0002] Wastewater treatment is the process of purifying various types of wastewater, including domestic sewage and industrial wastewater. Wastewater comes from a wide range of sources and contains large amounts of organic matter, pathogens, heavy metals, and other harmful substances. Direct discharge of wastewater will pollute water bodies and soil, harming the ecosystem and human health. Wastewater treatment typically includes physical, chemical, and biological treatment methods. Physical treatment removes large particulate impurities through screens and sedimentation; chemical treatment uses chemical agents to react and precipitate or decompose pollutants; and biological treatment relies on microorganisms to decompose organic matter. The treatment process generally begins with pretreatment to remove large suspended solids, followed by primary treatment where sedimentation removes some suspended solids, then secondary treatment uses biological methods to remove dissolved organic matter. Some wastewater requires tertiary treatment to further remove nutrients such as nitrogen and phosphorus, as well as residual pollutants.

[0003] A search revealed a utility model patent with Chinese patent number CN222715176U, which discloses an integrated device for defluorinating fluoride-containing wastewater. Compared with the prior art, this utility model patent with Chinese patent number CN222715176U has a stirring mechanism provided by a transverse rotation mechanism. The transverse rotation mechanism is used for the circumferential motion of the stirring mechanism, and the stirring mechanism is used for the rotation of the stirring blades.

[0004] However, the above-mentioned device uses multiple motors and cylinders to mix fluoride-containing wastewater with drugs during use. Since the entire stirring mechanism is located on the outside of the sedimentation tank, the equipment occupies a large space and consumes a lot of energy. Therefore, if you want to achieve uniform mixing of wastewater and drugs and complete the initial sedimentation of large suspended solids, it often takes a longer time and requires the addition of more stirring mechanisms. Therefore, in order to solve the above problems, an energy-saving device for treating fluoride-containing wastewater is proposed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an energy-saving device for treating fluoride-containing wastewater.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An energy-saving device for treating fluoride-containing wastewater includes a sedimentation tank, a mixing tank on the side of the sedimentation tank, a mixing component on the inner side of the mixing tank, a support frame rotatably mounted on the inner side of the mixing tank, multiple spiral mixing frames rotatably connected to the support frame, a main mixing shaft fixedly connected to the inner side of the support frame, and mixing fan blades installed at the bottom of the main mixing shaft. The mixing fan blades and the multiple spiral mixing frames are used together for mixing the liquid in the mixing tank.

[0008] The sedimentation tank has a packing layer inside, an agitator is installed on the inner side of the sedimentation tank, a sludge scraper is installed at the bottom of the agitator, a sludge pump is installed at the bottom of the sedimentation tank, and an effluent tank is set on the side of the sedimentation tank away from the mixing tank.

[0009] The above technical solution further includes:

[0010] A second mounting plate is fixedly connected to the top of the sedimentation tank. An agitator motor is mounted on the second mounting plate. A drive shaft is fixedly connected to the output end of the agitator motor. The drive shaft is fixedly connected to the agitator frame and rotatably connected to the second mounting plate.

[0011] The sedimentation tank and the effluent tank share a common outlet. An effluent pipe is installed on the side of the effluent tank away from the sedimentation tank. A sludge hopper is located at the bottom of the sedimentation tank, and a sludge pump is installed at the sludge hopper.

[0012] The mixing assembly also includes a first mounting plate fixedly connected to the top of the mixing tank. A mixing motor is mounted on the top of the first mounting plate. The output end of the mixing motor is fixedly connected to the main mixing shaft, and the main mixing shaft is rotatably connected to the first mounting plate.

[0013] A fixed ring is fixedly connected to the inner side of the mixing tank, and a gear ring is fixedly connected to the inner side of the fixed ring. A rotating shaft is rotatably connected to the end of the support frame near the end of the gear ring, and a gear is fixedly connected to the bottom of the rotating shaft. The gear and the gear ring mesh with each other.

[0014] A drive sprocket is fixedly connected to the top of the rotating shaft, and a secondary mixing shaft is rotatably connected to the middle of the support frame. The spiral mixing frame is fixedly connected to the secondary mixing shaft.

[0015] A driven sprocket is fixedly connected to one end of the secondary mixing shaft near the driving sprocket, and a chain is sleeved between the driving sprocket and the driven sprocket.

[0016] A water passage is provided between the sedimentation tank and the mixing tank.

[0017] This utility model has the following beneficial effects:

[0018] In this invention, the mixing tank occupies a small area, and the rotating support frame drives multiple spiral mixing frames to move in a circular motion. At the same time, the mixing fan blades at the bottom of the main mixing shaft also participate in the stirring. This multi-dimensional mixing method can quickly and thoroughly mix the fluoride-containing wastewater with the treatment agent, allowing the agent to disperse rapidly in the wastewater. This greatly shortens the mixing time, improves the efficiency of the chemical reaction, and helps to more effectively remove fluoride ions from the wastewater.

[0019] In this invention, fluoride-containing wastewater enters a mixing tank, where it is thoroughly mixed with a defluorination agent. The mixture then flows by gravity through a water passage into a sedimentation tank, where sedimentation occurs. The supernatant flows by gravity through an outlet into an effluent tank for discharge. Sludge is concentrated in a sludge hopper, and the remaining sludge is pumped to a mobile desludge truck for off-site disposal. Compared to traditional devices driven by multiple motors and cylinders, this device is more energy efficient and meets the requirements for energy conservation and emission reduction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an energy-saving device for treating fluoride-containing wastewater proposed in this utility model.

[0021] Figure 2 This is a schematic diagram of the overall front cross-sectional structure of this utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of the sedimentation tank, effluent tank and mixing tank in this utility model;

[0023] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0024] In the diagram: 1. Sedimentation tank; 2. Effluent tank; 3. Mixing tank; 4. Sludge pump; 10. Sludge hopper; 11. Sludge scraper; 12. Agitator frame; 13. Agitator motor; 14. Packing layer; 15. Drive shaft; 16. Second mounting plate; 20. Outlet; 21. Outlet pipe; 30. Mixing fan blade; 31. Main mixing shaft; 32. Spiral mixing frame; 33. Secondary mixing shaft; 34. Fixing ring; 35. Gear ring; 36. Rotating shaft; 37. Drive sprocket; 38. Chain; 39. Driven sprocket; 310. Gear; 311. Support frame; 312. First mounting plate; 313. Water passage hole; 314. Mixing motor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example

[0027] like Figure 1 - Figure 4 As shown, the present invention proposes an energy-saving device for treating fluoride-containing wastewater, including a sedimentation tank 1, a mixing tank 3 arranged on the side of the sedimentation tank 1, a mixing component arranged on the inner side of the mixing tank 3, the mixing component including a support frame 311, the support frame 311 being rotatably arranged inside the mixing tank 3, a plurality of spiral mixing frames 32 being circumferentially connected to the support frame 311, a main mixing shaft 31 being fixedly connected to the inner side of the support frame 311, a mixing fan blade 30 being installed at the bottom of the main mixing shaft 31, the mixing fan blade 30 and the plurality of spiral mixing frames 32 being used together for mixing the liquid in the mixing tank 3;

[0028] The sedimentation tank 1 is equipped with a packing layer 14 inside, and an agitator 12 is rotatably installed on the inner side of the sedimentation tank 1. A sludge scraper 11 is installed at the bottom of the agitator 12. A sludge discharge pump 4 is installed at the bottom of the sedimentation tank 1. An effluent tank 2 is provided on the side of the sedimentation tank 1 away from the mixing tank 3.

[0029] Furthermore, the fluoride-containing wastewater first enters the mixing tank 3, where the mixing components begin to function. When the support frame 311 is rotated, multiple spiral mixing frames 32 on the support frame 311 rotate accordingly. Simultaneously, the main mixing shaft 31, fixedly connected to the inner side of the support frame 311, also rotates, driving the mixing fan blades 30 mounted at its bottom to rotate. The mixing fan blades 30 work in conjunction with the multiple spiral mixing frames 32; the rotation of the mixing fan blades 30 generates a strong stirring force at the bottom of the mixing tank 3, causing the wastewater and the added treatment chemicals to initially mix in the bottom area.

[0030] Furthermore, during the circular motion, the spiral mixing rack 32 can rotate, and its special spiral shape will agitate the wastewater at different heights, forming a turbulent flow that rolls up and down. This will lift the initially mixed liquid at the bottom upwards and allow it to fully contact the liquid in other areas, further promoting the uniform mixing of wastewater and drugs. This ensures that the drugs can be quickly and comprehensively dispersed in the wastewater, providing favorable conditions for subsequent chemical reactions and effectively removing fluoride ions from the wastewater.

[0031] Furthermore, the thoroughly mixed wastewater flows from the mixing tank 3 into the sedimentation tank 1. The sedimentation tank 1 is equipped with a packing layer 14, which is composed of numerous regularly or irregularly shaped materials (such as inclined tubes, inclined plates, etc.) to prevent flocculent matter at the bottom of the packing layer 14 from appearing in the supernatant of the sedimentation tank 1. During the sedimentation process, the agitator 12, which is rotatably installed inside the sedimentation tank 1, will slowly rotate under power. The rotation of the agitator 12 can prevent the sludge in the sedimentation tank 1 from caking and keep the sludge in a loose state for easy subsequent discharge.

[0032] Furthermore, the packing layer 14 in the sedimentation tank 1 is the core component for improving solid-liquid separation efficiency. It is commonly found in inclined tube (plate) sedimentation tanks or high-efficiency sedimentation tanks. The packing layer 14 is mainly divided into inclined tube / inclined plate packing (mostly made of plastic material, in the shape of honeycomb or corrugated, with an inclination angle of 60°) or fiber bundle packing and combined packing.

[0033] Furthermore, structurally, the packing layer 14 is usually located in the upper part of the sedimentation tank 1, with the water inlet distribution area below and the clear water collection area above. The modular installation facilitates maintenance and significantly improves treatment efficiency by shortening the particle settling path.

[0034] Furthermore, the scraper 11 installed at the bottom of the agitator 12 will move as the agitator 12 rotates, scraping the sludge settled at the bottom of the sedimentation tank 1 towards the location of the sludge hopper 10 in a timely manner. After the sludge accumulates to a certain extent, the sludge pump 4 will start and pump the sludge out of the sedimentation tank 1, so as to avoid the sludge from accumulating at the bottom of the tank and affecting the sedimentation effect and normal operation of the device.

[0035] Furthermore, the supernatant after sedimentation flows from the side of sedimentation tank 1 away from mixing tank 3 into effluent tank 2. Effluent tank 2 can further collect and regulate the treated water, and finally discharge water that meets the discharge standards, thus realizing the effective treatment and resource utilization of fluoride-containing wastewater.

[0036] A second mounting plate 16 is fixedly connected to the top of the sedimentation tank 1. An agitator motor 13 is mounted on the second mounting plate 16. A drive shaft 15 is fixedly connected to the output end of the agitator motor 13. The drive shaft 15 is fixedly connected to the agitator frame 12. The drive shaft 15 is rotatably connected to the second mounting plate 16.

[0037] An outlet 20 is provided between sedimentation tank 1 and effluent tank 2. An effluent pipe 21 is installed on the side of effluent tank 2 away from sedimentation tank 1. A sludge hopper 10 is provided at the bottom of sedimentation tank 1, and a sludge pump 4 is installed at the sludge hopper 10.

[0038] Furthermore, in the sedimentation tank 1, an agitator motor 13 is installed on the second mounting plate 16 fixedly connected to the top of the sedimentation tank 1. When the agitator motor 13 starts, the transmission shaft 15 fixedly connected to its output end begins to rotate. The transmission shaft 15 transmits power to the agitator frame 12, causing the agitator frame 12 to rotate slowly inside the sedimentation tank 1. The main function of the rotation of the agitator frame 12 is to prevent the sludge in the sedimentation tank 1 from caking, keeping the sludge in a loose state for easy subsequent discharge. At the same time, the scraper plate 11 installed at the bottom of the agitator frame 12 moves with the rotation of the agitator frame 12. A sludge hopper 10 is provided at the bottom of the sedimentation tank 1. Because the bottom of the sedimentation tank 1 has a conical design... Under the influence of gravity, the sludge will gradually settle to the bottom of the sedimentation tank 1. The sludge scraper 11 will scrape the sludge settled at the bottom of the sedimentation tank 1 to the sludge hopper 10 in time. When the sludge at the bottom of the sedimentation tank 1 reaches a certain level, the sludge pump 4 will be started to pump the sludge out of the sedimentation tank 1 to avoid the sludge from accumulating at the bottom of the tank and affecting the sedimentation effect and normal operation of the device. The supernatant after sedimentation treatment will flow into the effluent tank 2 through the outlet 20 that is opened between the sedimentation tank 1 and the effluent tank 2. The effluent tank 2 is equipped with an effluent pipe 21 on the side away from the sedimentation tank 1. The treated water that meets the standards will finally be discharged from the device through the effluent pipe 21, realizing the effective treatment and standard discharge of fluoride-containing wastewater.

[0039] The mixing assembly also includes a first mounting plate 312 fixedly connected to the top of the mixing tank 3. A mixing motor 314 is mounted on the top of the first mounting plate 312. The output end of the mixing motor 314 is fixedly connected to the main mixing shaft 31. The main mixing shaft 31 is rotatably connected to the first mounting plate 312.

[0040] A fixing ring 34 is fixedly connected to the inner side of the mixing tank 3, and a gear ring 35 is fixedly connected to the inner side of the fixing ring 34. A rotating shaft 36 is rotatably connected to the end of the support frame 311 near the end of the gear ring 35. A gear 310 is fixedly connected to the bottom of the rotating shaft 36, and the gear 310 meshes with the gear ring 35.

[0041] The top of the rotating shaft 36 is fixedly connected to the drive sprocket 37, the middle of the support frame 311 is rotatably connected to the auxiliary mixing shaft 33, and the spiral mixing frame 32 is fixedly connected to the auxiliary mixing shaft 33.

[0042] A driven sprocket 39 is fixedly connected to one end of the secondary mixing shaft 33 near the driving sprocket 37, and a chain 38 is sleeved between the driving sprocket 37 and the driven sprocket 39.

[0043] A water passage 313 is provided between sedimentation tank 1 and mixing tank 3;

[0044] Furthermore, the fluoride-containing wastewater enters the mixing tank 3, and the mixing components begin to operate. The mixing motor 314 starts, driving the main mixing shaft 31 to rotate. The mixing fan blades 30 at the bottom of the main mixing shaft 31 rotate accordingly, generating a stirring force at the bottom of the mixing tank 3, causing the wastewater and the added drug to be initially mixed in the bottom area. At the same time, a gear ring 35 is fixedly fixed to the inner side of the fixing ring 34, and a rotating shaft 36 is rotatably connected to the end of the support frame 311 near the end of the gear ring 35. The gear 310 fixedly connected to the bottom of the rotating shaft 36 meshes with the gear ring 35.

[0045] Furthermore, when the main mixing shaft 31 drives the support frame 311 to rotate, due to the meshing relationship between the gear 310 and the gear ring 35, the gear 310 will rotate around its own axis, thereby driving the rotating shaft 36 to rotate. The driving sprocket 37, which is fixedly connected to the top of the rotating shaft 36, rotates accordingly, and through the transmission of the chain 38, the driven sprocket 39 drives the auxiliary mixing shaft 33 to rotate. Since the spiral mixing frame 32 is fixedly connected to the auxiliary mixing shaft 33, the auxiliary mixing shaft 33 drives the spiral mixing frame 32 to rotate. While the spiral mixing frame 32 is moving around the support frame 311, it is also rotating itself. Its special spiral shape agitates the wastewater at different heights, forming a turbulent flow that rolls up and down, lifting the initially mixed liquid at the bottom upwards and allowing it to fully contact the liquid in other areas. Working in conjunction with the mixing fan blades 30, it further promotes the uniform mixing of wastewater and drugs, ensuring that the drugs are quickly and comprehensively dispersed in the wastewater, creating favorable conditions for the subsequent chemical reaction to remove fluoride ions.

[0046] Furthermore, the fully mixed wastewater flows into sedimentation tank 1 by gravity through the water passage 313 that is opened between sedimentation tank 1 and mixing tank 3, and then enters the sedimentation treatment process (the processes of stirring, sedimentation, sludge removal and water discharge in the sedimentation tank have been mentioned above), ultimately achieving effective treatment and compliant discharge of fluoride-containing wastewater.

[0047] In this embodiment, the fluoride-containing wastewater first enters the mixing tank 3. A mixing motor 314 is installed on the first mounting plate 312 at the top of the mixing tank 3, and the mixing motor 314 drives the mixing fan blades 30 to rotate. At the same time, the multiple spiral mixing frames 32 of the mixing motor 314 rotate and move in a circular motion. Their special spiral shape agitates the wastewater at different heights, forming an up-and-down turbulent flow, which lifts the initially mixed liquid at the bottom upward and makes it fully contact the liquid in other areas. Together with the mixing fan blades 30, it promotes the uniform mixing of wastewater and drugs. The fully mixed wastewater flows into the sedimentation tank 1 by gravity through the water passage 313 between the sedimentation tank 1 and the mixing tank 3.

[0048] The packing layer 14 installed inside the sedimentation tank 1 is composed of a variety of materials, providing a large surface area. When water flows through, suspended particles have more opportunities to contact and adhere to the packing surface. The stirring motor 13 drives the stirring frame 12 to rotate slowly to prevent sludge from caking. The scraper 11 at the bottom of the stirring frame 12 rotates with it, scraping the sludge settled at the sludge hopper 10 at the bottom of the sedimentation tank 1 towards the location of the sludge discharge pump 4. The sludge discharge pump 4 is started to pump out the sludge.

[0049] After sedimentation, the supernatant flows into the effluent tank 2 through the outlet 20 between the sedimentation tank 1 and the effluent tank 2. The effluent tank 2 further collects and regulates the treated water. Finally, the treated water that meets the standards is discharged from the device through the outlet pipe 21 on the side of the effluent tank 2 away from the sedimentation tank 1, thus achieving effective treatment and compliant discharge of fluoride-containing wastewater.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving device for treating fluoride-containing wastewater, comprising a sedimentation tank (1), characterized in that, A mixing tank (3) is provided on the side of the sedimentation tank (1). A mixing component is provided on the inner side of the mixing tank (3). The mixing component includes a support frame (311). The support frame (311) is rotatably disposed on the inner side of the mixing tank (3). Multiple spiral mixing frames (32) are circumferentially connected on the support frame (311). A main mixing shaft (31) is fixedly connected on the inner side of the support frame (311). A mixing fan blade (30) is installed at the bottom of the main mixing shaft (31). The mixing fan blade (30) and the multiple spiral mixing frames (32) are used together for liquid mixing in the mixing tank (3). The sedimentation tank (1) is equipped with a packing layer (14) inside. An agitator (12) is rotatably installed on the inner side of the sedimentation tank (1). A sludge scraper (11) is installed at the bottom of the agitator (12). A sludge discharge pump (4) is installed at the bottom of the sedimentation tank (1). An effluent tank (2) is provided on the side of the sedimentation tank (1) away from the mixing tank (3).

2. The energy-saving device for treating fluoride-containing wastewater according to claim 1, characterized in that, The top of the sedimentation tank (1) is fixedly connected to a second mounting plate (16), and an agitator motor (13) is mounted on the second mounting plate (16). The output end of the agitator motor (13) is fixedly connected to a drive shaft (15). The drive shaft (15) is fixedly connected to the agitator frame (12), and the drive shaft (15) is rotatably connected to the second mounting plate (16).

3. The energy-saving device for treating fluoride-containing wastewater according to claim 1, characterized in that, An outlet (20) is provided between the sedimentation tank (1) and the effluent tank (2). An effluent pipe (21) is installed on the side of the effluent tank (2) away from the sedimentation tank (1). A sludge hopper (10) is provided at the bottom of the sedimentation tank (1). The sludge pump (4) is installed at the sludge hopper (10).

4. The energy-saving device for treating fluoride-containing wastewater according to claim 1, characterized in that, The mixing assembly also includes a first mounting plate (312) fixedly connected to the top of the mixing tank (3). A mixing motor (314) is mounted on the top of the first mounting plate (312). The output end of the mixing motor (314) is fixedly connected to the main mixing shaft (31). The main mixing shaft (31) is rotatably connected to the first mounting plate (312).

5. The energy-saving device for treating fluoride-containing wastewater according to claim 4, characterized in that, A fixing ring (34) is fixedly connected to the inner side of the mixing tank (3), and a gear ring (35) is fixedly connected to the inner side of the fixing ring (34). A rotating shaft (36) is rotatably connected to the end of the support frame (311) near the end of the gear ring (35). A gear (310) is fixedly connected to the bottom of the rotating shaft (36), and the gear (310) meshes with the gear ring (35).

6. The energy-saving device for treating fluoride-containing wastewater according to claim 5, characterized in that, The top of the rotating shaft (36) is fixedly connected to the drive sprocket (37), the middle of the support frame (311) is rotatably connected to the secondary mixing shaft (33), and the spiral mixing frame (32) is fixedly connected to the secondary mixing shaft (33).

7. The energy-saving device for treating fluoride-containing wastewater according to claim 6, characterized in that, The secondary mixing shaft (33) is fixedly connected to a driven sprocket (39) at one end near the driving sprocket (37), and a chain (38) is sleeved between the driving sprocket (37) and the driven sprocket (39).

8. The energy-saving device for treating fluoride-containing wastewater according to claim 1, characterized in that, A water passage (313) is provided between the sedimentation tank (1) and the mixing tank (3).

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