Multistage purification device for wastewater in antimony ore smelting

Abstract

The application belongs to the technical field of wastewater multistage treatment, and discloses a multistage purification treatment device for wastewater of antimony mine smelting, which comprises a pretreatment module, one side of the pretreatment module is fixedly connected with an inlet pipe, and the other side of the pretreatment module is fixedly connected with a sedimentation tank. Through cooperation of structures such as the rectangular frame, the pressing net and the horizontal plate, the moving process of the rectangular frame is mainly divided into two parts of the pool wall and the pool bottom. When moving on the pool wall, the electric push rod can push under the action of the gravity of the rectangular frame itself, and the bottom roller abuts against the inner side wall of the sedimentation tank. When reaching the pool bottom, the electric push rod continues to advance, so that the connecting rod extrudes the sliding block to slide in the sliding groove, reaches the other side of the horizontal plate, continues to apply the pushing force, the side rectangular frame generates the driving force towards the inside, the whole rectangular frame is pulled, the sludge is pushed and extruded by the pressing net, compared with natural sedimentation, time is effectively saved, the sludge is partially dewatered, and the volume of the sludge is reduced.

Description

Technical Field

[0001] This invention belongs to the field of multi-stage wastewater treatment technology, specifically a multi-stage purification treatment device for wastewater from antimony ore smelting. Background Technology

[0002] Antimony smelting wastewater has a complex composition, mainly containing heavy metal pollutants such as antimony, lead, and cadmium. The wastewater is often acidic and can corrode equipment. Therefore, multi-stage purification treatment typically employs a combination of physical, chemical, biological, and membrane technologies. The main process includes pretreatment, main treatment, advanced treatment, and post-treatment and reuse. Pretreatment involves adjusting the pH value and adding coagulants and flocculants to promote the formation of flocs from suspended solids, removing most of the suspended solids and some heavy metals. The main treatment uses additives such as sulfides and iron salts to induce the formation of insoluble precipitates of antimony. Advanced treatment uses membrane technologies such as reverse osmosis and nanofiltration to further remove dissolved antimony and other impurities, ensuring the effluent meets quality standards. Finally, the treated water is disinfected and monitored, and then desorption and regeneration treatment is performed for recycling.

[0003] A method for treating antimony-containing wastewater, disclosed in prior art document CN108640390B, includes the following steps: S1, adjusting the pH of the antimony-containing wastewater to no more than 0.3 with sulfuric acid in the presence of sodium chloride, reacting to obtain a first mixed solution; the antimony-containing wastewater contains arsenic, antimony, and bismuth; S2, separating the first mixed solution into solid and liquid phases, adjusting the pH of the liquid phase to 0.8-1.5 with sodium hydroxide, reacting to obtain a second mixed solution; S3, separating the second mixed solution into solid and liquid phases to obtain antimony chloride solid product. This device achieves a high antimony recovery rate of up to 95% in the antimony-containing wastewater; it can also prepare a high-purity antimony-based complexing precipitant; this complexing precipitant is highly effective in purifying arsenic and bismuth in electrolytes. The treatment method of this device is simple, low-cost, and highly stable, making it easy to promote and apply industrially.

[0004] Although the above-mentioned device improves the recovery rate of antimony in antimony-containing wastewater by using a combination of sodium chloride and sulfuric acid to form a hydrochloric acid and sulfuric acid system, the chemical precipitation process uses additives to make antimony form insoluble precipitates, which will generate a large amount of sludge. If not treated in time, the reaction space will be gradually reduced, affecting the continuous processing capacity of the device. Currently, sludge is usually continuously extracted and dewatered by auxiliary dewatering equipment to separate the sludge, which increases the operating cost. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-stage purification treatment device for antimony smelting wastewater that accelerates partial dewatering of sludge, reduces sludge volume, and simultaneously scrapes off sludge from the bottom of the pool, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage purification treatment device for wastewater from antimony smelting, comprising a pretreatment module, an inlet pipe fixedly connected to one side of the pretreatment module, a sedimentation tank fixedly connected to the other side of the pretreatment module, a feed pipe fixedly connected to the top side wall of the sedimentation tank, a filter module fixedly connected to the side wall of the sedimentation tank, a disinfection monitoring module fixedly connected to the side wall of the filter module, and a drain pipe fixedly connected to the side wall of the disinfection monitoring module, and further comprising:

[0007] A sludge discharge mechanism, which is located inside the sedimentation tank;

[0008] An automatic scraping mechanism is connected to a sludge discharge mechanism;

[0009] The sludge discharge mechanism includes a rotating rod rotatably connected to the top of the inner cavity of the sedimentation tank. Both ends of the rotating rod are fixedly connected to sliding rods. The outer walls of the two sliding rods are slidably connected to a rectangular frame. A pressure screen is fixedly connected to the inner side of the rectangular frame.

[0010] Preferably, the sludge discharge mechanism further includes a support plate fixed to the top of the sedimentation tank, an electric actuator rotatably connected to the top of the support plate, and a push block fixed to the output end of the electric actuator.

[0011] Preferably, a horizontal plate is fixed to the top of the rectangular frame, and a groove is provided in the middle of the horizontal plate.

[0012] Preferably, a connecting rod is rotatably connected to the side wall of the push block, and a slider is rotatably connected to the end of the connecting rod away from the push block, and the slider is slidably connected in the groove.

[0013] Preferably, rollers are rotatably connected to both sides of the bottom of the rectangular frame, and the outer walls of a pair of rollers abut against the inner cavity of the sedimentation tank.

[0014] Preferably, the automatic scraping mechanism includes right-angled plates fixedly connected to both sides of a rectangular frame, and each end of the right-angled plate is fixedly connected to a fixing plate, which is fixedly connected to the end side wall of the sliding rod.

[0015] Preferably, the outer wall of the sliding rod and the interior of the right-angle plate are slidably connected to an extrusion plate, and the side walls of the pair of fixed plates are fixedly connected to guide rods, which slidably pass through the extrusion plate.

[0016] Preferably, each of the ends of the pair of guide rods is slidably connected to a telescopic rod, and the ends of the pair of telescopic rods are jointly fixed to a bottom scraper, the sidewall of the bottom scraper slidingly abutting against the surface of the rectangular frame.

[0017] Preferably, a first helical spring and a second helical spring are fixedly connected to both ends of the pair of extrusion plates, and both are sleeved on the outside of the guide rod. The other end of the first helical spring is fixedly connected to the fixed plate, and the other end of the second helical spring is fixedly connected to the end of the telescopic rod.

[0018] Preferably, a pair of L-shaped plates are fixed to the side of the rectangular frame away from the right-angle plate, and the ends of the L-shaped plates abut against the extrusion plate. Side scrapers are fixed to both sides of the rectangular frame, and the ends of the side scrapers abut against the inner wall of the sedimentation tank.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention utilizes a combination of a rectangular frame, a pressure mesh, and a horizontal plate to enable the rectangular frame to move within a rectangular sedimentation tank using a single drive. The movement of the rectangular frame is mainly divided into two parts: moving along the tank wall and moving along the tank bottom. When moving along the tank wall, the electric actuator pushes the rectangular frame, which, under its own weight, abuts against the inner wall of the sedimentation tank via rollers at the bottom. Upon reaching the tank bottom, the electric actuator continues to advance, causing the connecting rod to squeeze the slider to slide within the chute. When it reaches the other side of the horizontal plate, the actuator continues to apply thrust, generating an inward driving force that pulls the entire rectangular frame. The pressure mesh pushes out the sludge, effectively saving time compared to natural sedimentation. Simultaneously, it partially dewaters the sludge, reducing its volume and facilitating subsequent processing, thus effectively reducing equipment operating costs.

[0021] This invention improves the scraping effect on the bottom of the sedimentation tank by incorporating a bottom scraper, an L-shaped plate, and an extrusion plate. The rectangular frame moves along the tank wall via rollers. When it reaches the bottom, there is a gap between the frame and the bottom. Since sludge usually adheres to the bottom, the L-shaped plate and extrusion plate work together to automatically adjust their displacement based on the movement of the rectangular frame. This causes the first and second helical springs to be compressed or stretched, driving the bottom scraper. When the rollers move along the side wall of the sedimentation tank, the bottom scraper retracts, avoiding contact with the side wall. When the rollers move along the bottom of the sedimentation tank, the bottom scraper automatically extends and abuts against the bottom, simultaneously scraping away the sludge. This prevents sludge leakage through the gaps at the bottom of the rollers. Combined with the side scrapers on both sides, the tank wall is scraped simultaneously, ensuring a tight seal against leakage. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;

[0024] Figure 3 This is a schematic diagram showing the structural fit between the rectangular frame and the horizontal plate of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the present invention in the reset state of the pressure mesh;

[0026] Figure 5 For the present invention Figure 4 A magnified view of the structure at point A in the middle;

[0027] Figure 6 This is a schematic diagram of the working state of the pressing screen of the present invention;

[0028] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at point B in the middle;

[0029] Figure 8 For the present invention Figure 6 A magnified schematic diagram of the structure at point C in the middle;

[0030] Figure 9 This is a schematic diagram of the three-dimensional side section structure of the present invention;

[0031] Figure 10 This is a schematic diagram showing the structural fit between the sliding rod and the fixed plate of the present invention.

[0032] In the picture:

[0033] 100. Pretreatment module; 200. Sedimentation tank; 300. Filtration module; 400. Disinfection monitoring module; 500. Drainage pipe; 600. Inlet pipe; 700. Feeding pipe; 800. Sludge discharge mechanism; 810. Push block; 820. Rectangular frame; 830. Pressing screen; 840. Horizontal plate; 850. Rotating rod; 860. Slide chute; 870. Sliding block; 880. Connecting rod; 890. Sliding rod; 8100. Roller; 8110. Support plate; 8120. Electric push rod; 900. Automatic scraping mechanism; 910. Right-angle plate; 920. Telescopic rod; 930. Bottom scraper; 940. Side scraper; 950. L-shaped plate; 960. Extrusion plate; 970. Fixing plate; 980. Guide rod; 990. First helical spring; 9100. Second helical spring. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figures 1 to 10As shown, this invention provides a multi-stage purification treatment device for wastewater from antimony smelting, including a pretreatment module 100. One side of the pretreatment module 100 is fixedly connected to an inlet pipe 600, and the other side of the pretreatment module 100 is fixedly connected to a sedimentation tank 200. A feed pipe 700 is fixedly connected to the top side wall of the sedimentation tank 200. A filter module 300 is fixedly connected to the side wall of the sedimentation tank 200, and a disinfection monitoring module 400 is fixedly connected to the side wall of the filter module 300. A drain pipe 500 is fixedly connected to the side wall of the disinfection monitoring module 400. The device also includes:

[0036] The sludge discharge mechanism 800 is located inside the sedimentation tank 200;

[0037] Automatic scraping mechanism 900, which is connected to sludge discharge mechanism 800;

[0038] The sludge discharge mechanism 800 includes a rotating rod 850 rotatably connected to the top of the inner cavity of the sedimentation tank 200. Both ends of the rotating rod 850 are fixedly connected to sliding rods 890. The outer walls of the two sliding rods 890 are slidably connected to a rectangular frame 820. A pressure screen 830 is fixedly connected to the inner side of the rectangular frame 820.

[0039] The above scheme is adopted as follows: the pretreatment module 100 receives wastewater from the inlet pipe 600 and promotes the removal of heavy metals by adjusting the pH value and adding coagulants and flocculants. The treated wastewater is then transported to the sedimentation tank 200. In the sedimentation tank 200, additives introduced by the feed pipe 700 react with pollutants in the wastewater to form precipitates, which are then discharged with the assistance of the sludge discharge mechanism 800. The rotating rod 850 and the sliding rod 890 work together to allow the rectangular frame 820 to move within the sedimentation tank 200, and the sludge is squeezed and dewatered by the pressure screen 830, ensuring efficient sludge treatment. Simultaneously, the clarified liquid after sedimentation flows from the sedimentation tank 200 to the filtration module 300, where dissolved pollutants are further removed using membrane technology. Finally, it flows into the disinfection monitoring module 400 for sterilization and disinfection before being discharged through the drain pipe 500, forming a complete wastewater treatment chain. The automatic scraping mechanism 900 is connected to the sludge discharge mechanism 800 to ensure that the bottom of the sedimentation tank 200 is kept clean, thereby improving the system's operating efficiency and stability.

[0040] like Figures 2 to 4 , Figure 8 , Figure 9As shown, the sludge discharge mechanism 800 also includes a support plate 8110 fixed to the top of the sedimentation tank 200. An electric push rod 8120 is rotatably connected to the top of the support plate 8110, and a push block 810 is fixedly connected to the output end of the electric push rod 8120. A horizontal plate 840 is fixedly connected to the top of the rectangular frame 820, and a sliding groove 860 is opened in the middle of the horizontal plate 840. A connecting rod 880 is rotatably connected to the side wall of the push block 810, and a slider 870 is rotatably connected to the end of the connecting rod 880 away from the push block 810. The slider 870 is slidably connected in the sliding groove 860. Rollers 8100 are rotatably connected to both sides of the bottom of the rectangular frame 820, and the outer walls of a pair of rollers 8100 abut against the inner cavity of the sedimentation tank 200.

[0041] The above scheme is adopted as follows: In terms of sludge treatment, after the wastewater and reagents in the sedimentation tank 200 mix and form sediment, the electric actuator 8120 is activated, pushing the pusher block 810, which in turn moves the slider 870 and the horizontal plate 840 downwards, thereby moving the rectangular frame 820 downwards. At this time, the bottom roller 8100 is always in contact with the inner wall of the sedimentation tank 200, ensuring the stability of the frame during movement. The cooperation between the sliding rod 890 and the rotating rod 850 ensures the deflection of the rectangular frame 820 during downward movement, realizing the effective angle adjustment of the pressing screen 830, so as to better push the sediment towards the discharge outlet. During the sludge compression process, when the roller 8100 reaches the bottom corner of the sedimentation tank 200, the rectangular frame 820 continues to push the sludge towards the discharge outlet. When the sludge is concentrated near the discharge outlet, the external sludge pump can quickly discharge it, ensuring the smooth operation of the sedimentation tank 200. After a batch of sludge is discharged, the electric actuator 8120 reverses its operation, pulling the slider 870 back from the inner end to the outer end of the cross plate 840. The reverse movement of the rectangular frame 820 allows the pressure screen 830 to be backwashed in a relatively clear liquid, achieving a certain degree of self-cleaning. This design not only improves the system's operating efficiency but also reduces the frequency of manual maintenance, extending the equipment's service life. Simultaneously, the pressure screen 830 can be periodically disassembled for cleaning or replacement, ensuring the equipment maintains stability and high efficiency during long-term operation.

[0042] like Figure 2 , Figures 4 to 10As shown, the automatic scraping mechanism 900 includes right-angled plates 910 fixedly connected to both sides of a rectangular frame 820. Each end of the right-angled plate 910 is fixedly connected to a fixing plate 970, which is fixedly connected to the end sidewall of a sliding rod 890. A pressing plate 960 is slidably connected to the outer wall of the sliding rod 890 and the interior of the right-angled plate 910. Guide rods 980 are fixedly connected to the sidewalls of each pair of fixing plates 970, and the guide rods 980 slidably pass through the pressing plate 960. Telescopic rods 920 are slidably connected to the ends of each pair of guide rods 980, and a bottom scraper 930 is fixedly connected to the ends of each pair of telescopic rods 920. The sidewall of the bottom scraper 930 slides... The rectangular frame 820 is abutted against the surface of the rectangular frame 820; a first helical spring 990 and a second helical spring 9100 are respectively fixed to the two ends of a pair of extrusion plates 960, and both are sleeved on the outside of the guide rod 980. The other end of the first helical spring 990 is fixed to the fixed plate 970, and the other end of the second helical spring 9100 is fixed to the end of the telescopic rod 920; a pair of L-shaped plates 950 are fixed to the side of the rectangular frame 820 away from the right angle plate 910, and the ends of the L-shaped plates 950 abut against the extrusion plates 960; side scrapers 940 are fixed to both sides of the rectangular frame 820, and the ends of the side scrapers 940 abut against the inner sidewall of the sedimentation tank 200.

[0043] Using the above scheme: when roller 8100 contacts the side wall of sedimentation tank 200, as Figure 4 As shown, the rectangular frame 820 retracts to its shortest distance along the sliding rod 890. This action allows the L-shaped plate 950, fixed to the rectangular frame 820, to push the extrusion plate 960 along the axial direction of the sliding rod 890, thereby compressing the first helical spring 990 while stretching the second helical spring 9100. The tension of the second helical spring 9100 pulls the telescopic rod 920 a certain distance towards the extrusion plate 960, causing the bottom scraper 930 to move upwards, thus avoiding contact with the side wall of the sedimentation tank 200. When the roller 8100 moves to the bottom corner of the sedimentation tank 200, the rectangular frame 820 slides to its farthest position on the sliding rod 890. At this time, the L-shaped plate 950 disengages from the extrusion plate 960, maintaining the farthest distance, thus no longer obstructing the automatic reset of the first helical spring 990 and the second helical spring 9100. This allows the bottom scraper 930 to be pressed downwards by both, firmly abutting the bottom of the sedimentation tank 200. As the rectangular frame 820 continues to move, even if there is partial retraction, the L-shaped plate 950 will never come into contact with the extrusion plate 960, such as... Figure 6 and Figure 7As shown in the diagram, at this point, roller 8100 reaches the bottom area of ​​sedimentation tank 200, and bottom scraper 930 remains in close contact with the bottom of the tank, simultaneously scraping away sludge. At the same time, side scrapers 940 on both sides work in concert to effectively clean the side walls of sedimentation tank 200. This design ensures that the sludge is concentrated, squeezed, dewatered, and collected at the discharge port, significantly reducing its volume and facilitating rapid subsequent wastewater discharge. It also prevents excessive drop in water level within sedimentation tank 200 after discharge, which could affect the efficiency of the next batch of wastewater treatment. This not only improves the overall efficiency of wastewater treatment but also ensures smooth transitions between stages, providing a guarantee for efficient and continuous wastewater treatment.

[0044] Working principle and usage process of this invention:

[0045] First, wastewater enters the pretreatment module 100 through the inlet pipe 600. An alkaline solvent is added to adjust the pH value, followed by the addition of coagulants and flocculants to promote the formation of flocs from suspended solids, removing most of the suspended solids and some heavy metals. Next, it enters the sedimentation tank 200, where additives such as sulfides and iron salts are used through the feed pipe 700 to induce the formation of insoluble precipitates of antimony. The precipitates form sludge, which is then accelerated and dehydrated by the sludge discharge mechanism 800 and the automatic scraping mechanism 900 before being discharged through the outlet. Then, it reaches the filtration module 300, where reverse osmosis and nanofiltration membrane technologies are used to further remove dissolved antimony and other impurities, ensuring the effluent meets quality standards. Finally, it enters the disinfection and monitoring module 400 for ultraviolet disinfection and sterilization. After the water quality meets standards, it is discharged through the drain pipe 500 for recycling.

[0046] Secondly, after the wastewater and reagents in the sedimentation tank 200 mix and form sediment, the electric actuator 8120 is activated to push the push block 810. The connecting rod 880 drives the slider 870 and the horizontal plate 840 to move downward. At this time, the rectangular frame 820 moves downward. Under the action of its own gravity, the rectangular frame 820 always abuts against the inner wall of the sedimentation tank 200 through the bottom roller 8100. The sliding rod 890 and the rotating rod 850 ensure that the rectangular frame 820 always deflects around the rotating rod 850 as the axis during the downward movement. That is, the inner pressure screen 830 moves towards the sewage outlet at a changing angle. When roller 8100 reaches the bottom corner of sedimentation tank 200, rectangular frame 820 slides to its maximum distance on sliding rod 890. At this time, electric actuator 8120 continues to advance, causing connecting rod 880 to press slider 870 to slide within chute 860, reaching the other side of horizontal plate 840. Continuing to apply thrust, the side rectangular frame 820 generates an inward driving force, pushing it towards... Figure 6Move in the direction indicated by the arrow. At this time, the roller 8100 always moves at the bottom of the sedimentation tank 200, the rectangular frame 820 retracts the sliding rod 890, and the pressure net 830 on the rectangular frame 820 simultaneously pushes the sludge in the tank in the direction of the arrow, quickly squeezing and dewatering the sludge generated inside the sedimentation tank 200, and collecting it near the sewage outlet for easy discharge;

[0047] Again, when roller 8100 abuts against the side wall of sedimentation tank 200, as... Figure 4 As shown, the rectangular frame 820 is retracted to its shortest distance on the sliding rod 890. At this time, the L-shaped plate 950 fixed on the rectangular frame 820 can push and slide the extrusion plate 960 along the axial direction of the sliding rod 890, extruding the guide rod 980, stretching the second helical spring 9100, and pulling the telescopic rod 920 towards the extrusion plate 960 a small distance through the tension of the second helical spring 9100, so that the bottom scraper 930 at the bottom moves upward and does not come into contact with the side wall of the sedimentation tank 200. When the roller 8100 reaches the bottom corner of the sedimentation tank 200, the rectangular frame 820 slides to its furthest distance on the sliding rod 890. The L-shaped plate 950 then disengages from the squeezing plate 960 to its furthest distance, without obstructing the automatic reset of the first and second helical springs 990 and 9100. This forces the bottom scraper 930 downwards, pressing it against the bottom of the sedimentation tank 200. Even if the rectangular frame 820 partially retracts during its continued movement, the L-shaped plate 950 never contacts the squeezing plate 960. Figure 6 and Figure 7 As shown, when the roller 8100 reaches the bottom area of ​​the sedimentation tank 200, the bottom scraper 930 always abuts against the bottom of the sedimentation tank 200, simultaneously scraping off the sludge. Together with the side scrapers 940 on both sides, the tank walls are scraped off simultaneously, so that the sludge can be basically concentrated, squeezed and dewatered, and gathered at the discharge port, reducing the volume, facilitating rapid discharge, and improving the efficiency of subsequent dewatering. This also prevents the water level in the sedimentation tank 200 from dropping too much after discharge, which would affect the treatment efficiency of the next batch of wastewater.

[0048] Finally, after a batch of sludge is discharged from the tank, the electric actuator 8120 is activated in reverse to pull the slider 870 back from the inner end to the outer end of the horizontal plate 840. The drive of the electric actuator 8120 causes the rectangular frame 820 to generate an outward pulling force, which moves the rectangular frame 820 in reverse. When it reaches the corner, the L-shaped plate 950 pushes the squeezing plate 960 to squeeze the first helical spring 990, causing the guide rod 980 to pull the bottom scraper 930 to retract above the rectangular frame 820, avoiding contact with the side wall of the sedimentation tank 200 and causing resistance. Furthermore, because of the reverse movement, the screen 830 moves in reverse in the relatively clear liquid in the tank, achieving a partial backwashing effect. The screen 830 can be removed for cleaning or replacement periodically, facilitating long-term stable operation of the device.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage purification and treatment device for wastewater from antimony smelting, comprising a pretreatment module (100), wherein an inlet pipe (600) is fixedly connected to one side of the pretreatment module (100), and a sedimentation tank (200) is fixedly connected to the other side of the pretreatment module (100). A feed pipe (700) is fixedly connected to the top side wall of the sedimentation tank (200), a filter module (300) is fixedly connected to the side wall of the sedimentation tank (200), a disinfection monitoring module (400) is fixedly connected to the side wall of the filter module (300), and a drain pipe (500) is fixedly connected to the side wall of the disinfection monitoring module (400), characterized in that: Also includes: A sludge discharge mechanism (800) is located inside the sedimentation tank (200); An automatic scraping mechanism (900) is connected to a sludge discharge mechanism (800); The sludge discharge mechanism (800) includes a rotating rod (850) rotatably connected to the top of the inner cavity of the sedimentation tank (200). Both ends of the rotating rod (850) are fixedly connected to sliding rods (890). The outer walls of the two sliding rods (890) are slidably connected to a rectangular frame (820). A pressure mesh (830) is fixedly connected to the inner side of the rectangular frame (820).

2. The multi-stage purification and treatment device for antimony ore smelting wastewater according to claim 1, characterized in that: The sludge discharge mechanism (800) also includes a support plate (8110) fixed to the top of the sedimentation tank (200), and an electric push rod (8120) is rotatably connected to the top of the support plate (8110). A push block (810) is fixed to the output end of the electric push rod (8120).

3. The multi-stage purification and treatment device for antimony ore smelting wastewater according to claim 2, characterized in that: A horizontal plate (840) is fixed to the top of the rectangular frame (820), and a groove (860) is provided in the middle of the horizontal plate (840).

4. The multi-stage purification and treatment device for antimony ore smelting wastewater according to claim 3, characterized in that: The side wall of the push block (810) is rotatably connected to a connecting rod (880), and the end of the connecting rod (880) away from the push block (810) is rotatably connected to a slider (870), which is slidably connected in the groove (860).

5. The multi-stage purification and treatment device for antimony ore smelting wastewater according to claim 4, characterized in that: Rollers (8100) are rotatably connected to both sides of the bottom of the rectangular frame (820), and the outer walls of a pair of rollers (8100) abut against the inner cavity of the sedimentation tank (200).

6. The multi-stage purification and treatment device for antimony ore smelting wastewater according to claim 1, characterized in that: The automatic scraping mechanism (900) includes right-angle plates (910) fixedly connected to both sides of the rectangular frame (820). Each end of the right-angle plate (910) is fixedly connected to a fixing plate (970), and each fixing plate (970) is fixedly connected to the end side wall of the sliding rod (890).

7. The multi-stage purification and treatment device for antimony ore smelting wastewater according to claim 6, characterized in that: The outer wall of the sliding rod (890) and the interior of the right-angle plate (910) are slidably connected to the extrusion plate (960). The side walls of the pair of fixed plates (970) are fixed with guide rods (980), and the guide rods (980) slide through the extrusion plate (960).

8. The multi-stage purification and treatment device for antimony ore smelting wastewater according to claim 7, characterized in that: Each of the ends of a pair of guide rods (980) is slidably connected to a telescopic rod (920), and the ends of the pair of telescopic rods (920) are jointly fixed to a bottom scraper (930), the side wall of the bottom scraper (930) slidingly abutting against the surface of the rectangular frame (820).

9. The multi-stage purification and treatment device for antimony ore smelting wastewater according to claim 8, characterized in that: A first helical spring (990) and a second helical spring (9100) are fixedly connected to both ends of a pair of extrusion plates (960), and both are sleeved on the outside of the guide rod (980). The other end of the first helical spring (990) is fixedly connected to the fixing plate (970), and the other end of the second helical spring (9100) is fixedly connected to the end of the telescopic rod (920).

10. The multi-stage purification and treatment device for antimony ore smelting wastewater according to claim 9, characterized in that: A pair of L-shaped plates (950) are fixed to the side of the rectangular frame (820) away from the right-angle plate (910). The ends of the L-shaped plates (950) abut against the extrusion plate (960). Side scrapers (940) are fixed to both sides of the rectangular frame (820). The ends of the side scrapers (940) abut against the inner wall of the sedimentation tank (200).

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