A device for deep filtration treatment of germanium smelting acidic wastewater

Abstract

The present application relates to germanium smelting acid wastewater technical field, especially to a kind of germanium smelting acid wastewater depth filtration treatment device, including machine body, first chamber and second chamber are set in machine body, first chamber and second chamber are all provided with four groups of vertical agitator for mixing wastewater and chemical reagent and a horizontal stirring blade, first chamber and second chamber are all provided with four pressing plates for pressing sludge, and reverse osmosis membrane for discharging excess water in sludge is installed on pressing plate.The present application increases the stirring range of vertical agitator when switching vertical agitator and pressing plate to connect, and when switching vertical agitator and pressing plate to separate, let pressing plate to carry out sludge pressing operation, and then sludge and wastewater do not need to be transported, realize the automatic switching from reaction process to pressing process, and greatly improve the processing capacity and automation degree, while avoiding harmful substances from dripping or volatilizing due to sludge and wastewater transportation.

Description

Technical Field

[0001] This invention relates to the field of acidic wastewater treatment technology in germanium smelting, and more particularly to a deep filtration treatment device for acidic wastewater from germanium smelting. Background Technology

[0002] Germanium, a rare and dispersed metal, is a supporting material for high-tech industries, and it is widely used in the electronics, aerospace, and military industries.

[0003] During germanium smelting, a large amount of acidic wastewater is generated in the leaching and rinsing processes. The wastewater generated in the leaching process contains a high concentration of arsenic. Since arsenic is extremely toxic, the arsenic-containing wastewater needs to be neutralized and treated with sludge sedimentation separately to reduce the harm of arsenic. However, the existing reaction tank equipment and sludge pressing equipment are set up independently, which requires the sludge-water mixture after the reaction to be transferred from the reaction tank to the pressing equipment. This process can easily cause leakage or volatilization of harmful substances, resulting in secondary pollution. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that in the prior art, the reaction tank equipment and the sludge pressing equipment are set up independently, and it is necessary to transfer the sludge-water mixture after the reaction from the reaction tank to the pressing equipment, which can easily cause leakage or volatilization of harmful substances. Therefore, a deep filtration treatment device for acidic wastewater from germanium smelting is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A deep filtration treatment device for acidic wastewater from germanium smelting includes a body. The body has a first chamber for storing arsenic-containing wastewater and a second chamber for storing non-arsenic-containing wastewater. Both the first and second chambers are equipped with four sedimentation tanks for settling sludge. Each of the first and second chambers has four sets of vertical stirring plates and one horizontal stirring blade for mixing wastewater and chemical reagents. Each of the first and second chambers also has four pressing plates for pressing sludge. Reverse osmosis membranes for discharging excess water from the sludge are installed on the pressing plates. The body includes a drive mechanism for driving the vertical stirring plates and the horizontal stirring blades. The body also includes a switching mechanism that connects or separates the vertical stirring plates from the pressing plates to increase the stirring range or perform sludge pressing operations.

[0007] Preferably, the bottom ends of the first chamber and the second chamber are each connected by a central guide block and four side guide blocks to form four sedimentation tanks. The central guide block is composed of a regular tetrahedron and a cuboid from top to bottom, and the side guide blocks are composed of a right triangular prism and a cuboid from top to bottom. A set of vertical stirring plates moves against the upper and lower ends of a reverse osmosis membrane.

[0008] Preferably, a discharge plate for discharging sludge is slidably installed at the bottom of the sedimentation tank, and a locking rod that moves against the lower end of the discharge plate is rotatably installed at the lower end of the machine body.

[0009] Preferably, a first conveying pipe for conveying arsenic-removed wastewater is installed between the first chamber and the second chamber, and a second conveying pipe for conveying wastewater from the second chamber is installed on the side of the second chamber away from the first conveying pipe.

[0010] Preferably, the drive mechanism includes two drive motors fixedly mounted above the first chamber and the second chamber respectively by two mounting brackets. A rotating shaft fixedly connected to the output end of the drive motor is rotatably mounted at the lower end of one of the mounting brackets. A mounting chamber is rotatably connected at the lower end of the rotating shaft. A first bevel gear is keyed to one end of the rotating shaft located in the mounting chamber. Four rotating shafts are installed through one of the mounting chambers. A second bevel gear meshing with the first bevel gear is keyed to one end of the rotating shaft located in the mounting chamber.

[0011] Preferably, one of the rotating shafts is threaded above the machine body, one end of the rotating shaft located below the installation chamber is fixedly connected to a horizontal stirring blade, and one end of the rotating shaft located outside the installation chamber is fixedly connected to a set of vertical stirring plates via two arc plates.

[0012] Preferably, the switching mechanism includes four bidirectional telescopic rods that are slidably installed above the first chamber and the second chamber. The two telescopic ends of one of the bidirectional telescopic rods are respectively fixedly connected to a connecting rod and a nut. The lower end of one of the connecting rods is movably connected to a pressing plate and a set of vertical stirring plates. The four closed and abutting nut forms a set, and the four closed and abutting nut is installed at a rotating shaft thread.

[0013] Preferably, four vertical slide rails are fixedly installed at the upper ends of the first chamber and the second chamber. One of the bidirectional telescopic rods is slidably installed on one of the vertical slide rails through a sliding bracket. Four guide grooves are opened in both the first chamber and the second chamber. One of the connecting rods is slidably installed in one guide groove through a slide bar. The guide groove consists of a horizontal groove and a vertical groove.

[0014] Preferably, one of the pressing plates and a set of vertical stirring plates are provided with a moving groove, two of the arc plates are rotatably connected to an annular member that is fixedly connected to the installation chamber, one of the annular members is fixedly connected to a limiting slide rail at both ends, and the lower end of one of the connecting rods is movably fitted into the moving groove and the limiting slide rail.

[0015] Preferably, a first magnetic block is fixedly installed on the side end of the moving groove of one of the pressing plates, a second magnetic block is fixedly installed on both sides of the lower end of one of the connecting rods, and a third magnetic block is fixedly installed on the side end of one of the limiting slide rails. The first magnetic block, the second magnetic block and the third magnetic block are all wrapped by a corrosion-resistant shell, and the second magnetic block is attracted to the opposite poles of the first magnetic block and the third magnetic block respectively.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. When switching between the vertical stirring plate and the pressing plate, this invention increases the stirring range of the vertical stirring plate and improves the stirring effect. When switching between the vertical stirring plate and the pressing plate, the pressing plate is used to press the sludge, thus eliminating the need to transport sludge and wastewater. This achieves automated and rapid switching from the reaction process to the pressing process, reduces manual intervention, achieves a continuous production process, and significantly improves processing capacity and automation. At the same time, it avoids the leakage or volatilization of harmful substances caused by transporting sludge and wastewater.

[0018] 2. This invention uses four sets of vertical stirring plates for vertical stirring and one horizontal stirring blade for horizontal stirring to stir wastewater and chemical reagents in multiple directions, thereby accelerating the reaction rate between the two and causing the precipitate particles produced by the neutralization reaction to quickly agglomerate into large flocs, thus increasing the sedimentation rate.

[0019] 3. In this invention, when a set of vertical stirring plates and a reverse osmosis membrane are in contact at their upper and lower ends, the vertical stirring plates are connected to the pressing plate. This increases the stirring range while simultaneously closing the reverse osmosis membrane, preventing high-concentration suspended solids from clogging the membrane and shortening its lifespan. When the set of vertical stirring plates and the reverse osmosis membrane are separated, the vertical stirring plates are separated from the pressing plate, allowing the pressing plate to press the sludge into a drier cake. At the same time, the reverse osmosis membrane is opened, allowing the water squeezed out of the sludge to be filtered and discharged through the reverse osmosis membrane, thereby reducing the volume and water content of the sludge and improving the quality of the squeezed water. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a deep filtration treatment device for acidic wastewater from germanium smelting proposed in this invention.

[0021] Figure 2 This is a frontal cross-section schematic diagram of a deep filtration treatment device for acidic wastewater from germanium smelting proposed in this invention. Figure 1 ;

[0022] Figure 3 In this invention Figure 2 Enlarged schematic diagram of part A;

[0023] Figure 4This is a frontal cross-section schematic diagram of a deep filtration treatment device for acidic wastewater from germanium smelting proposed in this invention. Figure 2 ;

[0024] Figure 5 In this invention Figure 4 Enlarged diagram of part B;

[0025] Figure 6 This is a top-section schematic diagram of a deep filtration treatment device for acidic wastewater from germanium smelting proposed in this invention.

[0026] Figure 7 This is a bottom view schematic diagram of a deep filtration treatment device for acidic wastewater from germanium smelting proposed in this invention.

[0027] Figure 8 This is a schematic diagram of the rotating shaft structure of a deep filtration treatment device for acidic wastewater from germanium smelting proposed in this invention.

[0028] Figure 9 This is a front sectional view of the installation chamber of a deep filtration treatment device for acidic wastewater from germanium smelting, as proposed in this invention.

[0029] Figure 10 This is a schematic diagram of the connecting rod structure of a deep filtration treatment device for acidic wastewater from germanium smelting proposed in this invention.

[0030] Figure 11 In this invention Figure 10 Enlarged schematic diagram of part C;

[0031] Figure 12 This is a schematic diagram of the vertical stirring plate structure of a deep filtration treatment device for acidic wastewater from germanium smelting proposed in this invention.

[0032] Figure 13 This is a schematic diagram of the limiting slide rail structure of a deep filtration treatment device for acidic wastewater from germanium smelting proposed in this invention.

[0033] In the diagram: 1. Body; 2. First chamber; 3. Second chamber; 4. Middle guide block; 5. Side guide block; 6. Sedimentation tank; 7. Vertical stirring plate; 8. Horizontal stirring blade; 9. Pressing plate; 10. Reverse osmosis membrane; 11. First conveying pipe; 12. Second conveying pipe; 13. Discharge plate; 14. Locking rod; 15. Drive motor; 16. Rotating shaft; 17. First bevel gear; 18. Rotating shaft; 19. Second bevel gear; 20. Arc plate; 21. Installation chamber; 22. Vertical slide rail; 23. Sliding bracket; 24. Bidirectional telescopic rod; 25. Guide chute; 26. Connecting rod; 27. Slide rod; 28. Assembly nut; 29. ​​Moving groove; 30. First magnetic block; 31. Second magnetic block; 32. Ring component; 33. Limiting slide rail; 34. Third magnetic block. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] Reference Figures 1-13 A deep filtration treatment device for acidic wastewater from germanium smelting includes a body 1. The body 1 contains a first chamber 2 for storing arsenic-containing wastewater and a second chamber 3 for storing non-arsenic-containing wastewater. The arsenic-containing wastewater is generated during the leaching process, specifically by leaching soluble germanium tetrachloride with strong acid. The non-arsenic-containing wastewater is generated during the rinsing of equipment exposed to strong acid. Both the first chamber 2 and the second chamber 3 are equipped with four sedimentation tanks 6 for settling sludge, which will be used for subsequent centralized treatment of the sludge in the sedimentation tanks 6. Both the first chamber 2 and the second chamber 3 are also equipped with... The mixture of wastewater and chemical reagents consists of four sets of vertical stirring plates 7 and one horizontal stirring blade 8. The vertical stirring of the vertical stirring plates 7 and the horizontal stirring of the horizontal stirring blade 8 provide multi-directional stirring of the wastewater and chemical reagents, accelerating the reaction rate. This causes the precipitate particles produced by the neutralization reaction to quickly coagulate into large flocs, which then settle downwards into the sedimentation tank 6. The chemical reagents include reducing agents, neutralizing agents, and flocculants. Since the chemical reagents are a mature technology in this field, they will not be described in detail. The first chamber 2 and the... Each of the two chambers 3 is equipped with four pressing plates 9 for pressing sludge, which breaks down the flocculent structure of the sludge, squeezes out excess water, and thus significantly reduces the volume and water content of the sludge, making it a drier sludge cake. Reverse osmosis membranes 10 are installed on the pressing plates 9 to discharge excess water from the sludge, allowing the squeezed water to be filtered through the reverse osmosis membranes 10 before flowing out of the sedimentation tank 6. The main body 1 is equipped with a drive mechanism for driving the vertical stirring plates 7 and the horizontal stirring blades 8, accelerating the reaction rate between wastewater and chemical reagents, and facilitating the neutralization reaction. The resulting precipitate particles quickly agglomerate into large flocs. Since the flocs are easily broken by external forces, four sets of vertical stirring plates 7 and one horizontal stirring blade 8 are driven to rotate at low speed to improve the integrity of the flocs. The machine body 1 is equipped with a switching mechanism that connects or separates the vertical stirring plates 7 from the pressing plate 9 to increase the stirring range or to perform sludge pressing operations. This enables automated and rapid switching from the reaction process to the pressing process, reduces manual intervention, achieves a continuous production process, and significantly improves processing capacity and automation.

[0036] Preferably, as shown in the appendix Figure 4 and attached Figure 6As shown, the bottom ends of the first chamber 2 and the second chamber 3 are each connected by a central guide block 4 and four side guide blocks 5 to form four sedimentation tanks 6. The central guide block 4 is composed of a regular tetrahedron and a cuboid from top to bottom, while the side guide blocks 5 are composed of a right triangular prism and a cuboid from top to bottom. The inclined surface of the regular tetrahedron of the central guide block 4 is inclined towards the sedimentation tank 6, and the inclined surface of the right triangular prism of the side guide blocks 5 is inclined towards the sedimentation tank 6. The flocs that settle downwards are guided by the inclined surfaces of the central guide block 4 and the side guide blocks 5 to fall into the sedimentation tank 6 to form sludge. When a set of vertical stirring plates 7 and a reverse osmosis membrane are connected... When the upper and lower ends of the reverse osmosis membrane 10 move in opposition to each other, the vertical stirring plate 7 connects with the pressing plate 9, thereby increasing the stirring range while closing the reverse osmosis membrane 10. This prevents the reverse osmosis membrane 10 from being clogged by high-concentration suspended solids during stirring, thus shortening its service life. When a set of vertical stirring plates 7 separates from a reverse osmosis membrane 10, the vertical stirring plate 7 separates from the pressing plate 9, allowing the pressing plate 9 to press the sludge. At the same time, the reverse osmosis membrane 10 is opened, allowing the water squeezed out of the sludge to be filtered and discharged through the reverse osmosis membrane 10, thereby reducing the volume and water content of the sludge and improving the water quality of the squeezed water.

[0037] Preferably, a discharge plate 13 for discharging sludge is slidably installed at the bottom of the sedimentation tank 6, and a corrosion-resistant sealing ring is provided between the discharge plate 13 and the sedimentation tank 6 to improve the sealing performance. A locking rod 14 is rotatably installed at the lower end of the machine body 1 to abut against the lower end of the discharge plate 13. By rotating the locking rod 14, the discharge plate 13 can be removed, and the pressed sludge cake can be taken out. The sludge cake is then mixed with cement, lime, sulfides and other solidifying agents to encapsulate heavy metals in the solidified body and reduce their leaching toxicity. A first conveying pipe for conveying arsenic-removed wastewater is installed between the first chamber 2 and the second chamber 3. 11. A second conveying pipe 12 for conveying wastewater in the second chamber 3 is installed on the side away from the first conveying pipe 11. Corrosion-resistant water pumps are installed at the first conveying pipe 11 and the second conveying pipe 12. The arsenic-removed wastewater is conveyed to the second chamber 3 through the first conveying pipe 11, and the wastewater is discharged from the machine body 1 through the second conveying pipe 12. Activated carbon or special heavy metal adsorbent is used on the outside of the machine body 1 to further remove trace heavy metals in the remaining wastewater. Then, a nanofiltration membrane is used to significantly reduce ions and impurities in the wastewater, thereby improving the water quality and achieving "zero discharge" of wastewater.

[0038] Preferably, the drive mechanism includes two drive motors 15 fixedly mounted above the first chamber 2 and the second chamber 3 via two mounting brackets. A rotating shaft 16, fixedly connected to the output end of the drive motor 15, is rotatably mounted on the lower end of one mounting bracket. A mounting chamber 21 is rotatably connected to the lower end of the rotating shaft 16. A first bevel gear 17 is keyed to one end of the rotating shaft 16 located in the mounting chamber 21. Four rotating shafts 18 are installed through the mounting chamber 21. A second bevel gear 19, meshing with the first bevel gear 17, is keyed to one end of each rotating shaft 18 located in the mounting chamber 21. A rotating shaft 16 is located in the... The upper part of the body 1 is threaded. One end of a rotating shaft 16 located below the installation chamber 21 is fixedly connected to a horizontal stirring blade 8. The other end of a rotating shaft 18 located outside the installation chamber 21 is fixedly connected to a set of vertical stirring plates 7 via two arc plates 20. Then, by starting the drive motor 15, the rotating shaft 16 drives the first bevel gear 17 to rotate. Under the meshing transmission of the first bevel gear 17 and four second bevel gears 19, the four sets of vertical stirring plates 7 and one horizontal stirring blade 8 are stirred and rotated to stir the wastewater and chemical reagents in multiple directions to accelerate the reaction rate between them.

[0039] Preferably, the switching mechanism includes four bidirectional telescopic rods 24 that are slidably installed above the first chamber 2 and the second chamber 3. The bidirectional telescopic rods 24 are electrically operated. The two telescopic ends of each bidirectional telescopic rod 24 are respectively fixedly connected to a connecting rod 26 and a assembly nut 28. The lower end of a connecting rod 26 is movably connected to a pressing plate 9 and a set of vertical stirring plates 7. The four closed and abutting assembly nuts 28 form a group, and the four closed and abutting assembly nuts 28 are installed at the thread of a rotating shaft 16.

[0040] Preferably, four vertical slide rails 22 are fixedly installed on the upper ends of the first chamber 2 and the second chamber 3. A bidirectional telescopic rod 24 is slidably installed on a vertical slide rail 22 through a sliding bracket 23, and under the guidance of the vertical slide rail 22, the bidirectional telescopic rod 24 moves vertically in a straight line. Four guide grooves 25 are opened in the first chamber 2 and the second chamber 3. A connecting rod 26 is slidably installed in a guide groove 25 through a slide rod 27. The guide groove 25 consists of a horizontal groove and a vertical groove, and under the guidance of the guide groove 25, the connecting rod 26 moves horizontally and vertically in a straight line in sequence.

[0041] Preferably, a pressing plate 9 and a set of vertical stirring plates 7 are each provided with a moving groove 29. Two arc plates 20 are rotatably connected to an annular member 32 which is fixedly connected to the installation chamber 21. That is, the two rotating arc plates 20 rotate in the annular member 32, while the annular member 32 and the installation chamber 21 are in a stationary state. The upper and lower ends of the annular member 32 are fixedly connected to a limiting slide rail 33. The lower end of a connecting rod 26 is movably fitted in the moving groove 29 and the limiting slide rail 33.

[0042] Preferably, a first magnetic block 30 is fixedly installed on the side end of the moving groove 29 of a pressing plate 9, a second magnetic block 31 is fixedly installed on both sides of the lower end of a connecting rod 26, and a third magnetic block 34 is fixedly installed on the side end of a limiting slide rail 33. The first magnetic block 30, the second magnetic block 31 and the third magnetic block 34 are all wrapped by a corrosion-resistant shell to prevent the magnetic blocks from being corroded by strong acid. The second magnetic block 31 is attracted to the opposite poles of the first magnetic block 30 and the third magnetic block 34 respectively.

[0043] It should be noted that when a set of vertical stirring plates 7 are connected to a pressing plate 9, the reverse osmosis membrane 10 of the pressing plate 9 is clamped between the set of vertical stirring plates 7 to limit the pressing plate 9 to the set of vertical stirring plates 7. Furthermore, magnetic blocks with opposite poles attracting each other can be set at the contact point between the vertical stirring plates 7 and the pressing plate 9 to enhance the limiting force on the pressing plate 9. At this time, the connecting rod 26 is located in the limiting slide rail 33 of the annular part 32. Since the second magnetic block 31 and the third magnetic block 34 are attracted by opposite poles, the connecting rod 26 is limited to the limiting slide rail 33.

[0044] When it is necessary to separate the vertical stirring plate 7 and the pressing plate 9, a rotation angle sensor installed in the installation chamber 21 detects the rotation angle of the rotating shaft 18. When the rotating shaft 18 and the vertical stirring plate 7 are at 0°, i.e., the moving groove 29 of the vertical stirring plate 7 and the limiting slide rail 33 are parallel and aligned, the two telescopic ends of the bidirectional telescopic rod 24 extend. Driven by one of the telescopic ends of the bidirectional telescopic rod 24, the connecting rod 26 disconnects the connection between the second magnetic block 31 and the third magnetic block 34, allowing the connecting rod 26 to move into the moving groove 29 of the pressing plate 9. It then connects to the first magnetic block 30 and the second magnetic block 31 through the attraction between their opposite poles. Simultaneously, the bidirectional telescopic rod 24... 4 One of the telescopic ends continues to drive the pressing plate 9 and the vertical stirring plate 7 to separate until the connecting rod 26 and the pressing plate 9 move above the sedimentation tank 6. Meanwhile, the other telescopic end of the bidirectional telescopic rod 24 drives the assembly nut 28 to move toward the thread of the rotating shaft 16 so that the four assembly nuts 28 close and abut against each other. The rotating shaft 16 and the four assembly nuts 28 drive the bidirectional telescopic rod 24 to move downward so that the pressing plate 9 can perform downward pressing operations. Meanwhile, the rotating shaft 16 drives the vertical stirring plate 7 and the horizontal stirring blade 8 to stir the remaining wastewater, so as to prevent the remaining wastewater from being in a static state and causing the remaining wastewater to stratify and have different concentrations from top to bottom.

[0045] When the vertical stirring plate 7 and the pressing plate 9 need to be connected, the drive rotating shaft 16 rotates in the opposite direction so that the pressing plate 9 and the vertical stirring plate 7 are at the same height. Then, the two telescopic ends of the bidirectional telescopic rod 24 are driven to retract. The connecting rod 26 and the pressing plate 9 move towards the vertical stirring plate 7 under the drive of one telescopic end of the bidirectional telescopic rod 24 until the reverse osmosis membrane 10 of one pressing plate 9 is stuck between a set of vertical stirring plates 7. The connecting rod 26 moves to the limiting slide rail 33 of the annular part 32 and is limited to the limiting slide rail 33 by the attraction of opposite poles of the second magnetic block 31 and the third magnetic block 34. The other telescopic end of the bidirectional telescopic rod 24 drives the assembly nut 28 away from the rotating shaft 16, so that the four assembly nuts 28 are separated.

[0046] The functional principle of this invention can be explained through the following operational methods:

[0047] First, arsenic-containing wastewater and non-arsenic-containing wastewater are poured into the first chamber 2 and the second chamber 3, respectively. A reducing agent is then poured into the first chamber 2 to reduce the highly toxic and soluble pentavalent arsenic to the less toxic and more easily precipitated trivalent arsenic. Next, neutralizing agents, flocculants, and other chemical reagents are poured into the first chamber 2 and the second chamber 3 to remove the acidity of the wastewater. At this point, the drive motor 15 is started, causing it to drive the first bevel gear 17 to rotate via the rotating shaft 16. Since one first bevel gear 17 is connected to four… The second bevel gear 19 engages and drives the pressing plate 9 to rotate vertically via the rotating shaft 18 and the vertical stirring plate 7. Meanwhile, the rotating shaft 16 drives the horizontal stirring blade 8 to rotate horizontally, and stirs the wastewater and chemical reagents in multiple directions to accelerate the reaction rate between them. This causes the precipitate particles produced by the neutralization reaction to quickly agglomerate into large flocs and then settle downwards. At the same time, under the guidance of the inclined surfaces of the middle guide block 4 and the side guide block 5, the flocs fall into the sedimentation tank 6 to form sludge.

[0048] Then, the bidirectional telescopic rod 24 is activated, causing its two telescopic ends to extend, closing and abutting the four assembly nuts 28 at the threaded location of the rotating shaft 16. Simultaneously, the connecting rod 26 moves from the horizontal groove of the guide slide 25 to the vertical groove, moving the pressing plate 9 above the sedimentation tank 6. This separates the pressing plate 9 from the vertical stirring plate 7, opening the reverse osmosis membrane 10. The drive motor 15 is then activated, causing the rotating shaft 16 to move the bidirectional telescopic rod 24 downwards in the vertical slide rail 22 via the thread and the four assembly nuts 28. Simultaneously, the connecting rod 26 moves downwards in the vertical groove of the guide slide 25, causing the pressing plate 9 to move downwards in the sedimentation tank 6, thus squeezing... Excess water is discharged from the sludge and filtered through the reverse osmosis membrane 10 to remove impurities. The water then flows into the first chamber 2 and the second chamber 3. The rotating shaft 16 drives the vertical stirring plate 7 and the horizontal stirring blades 8 to stir the remaining wastewater, preventing it from stratifying due to its static state and ensuring that the concentration of the remaining wastewater varies from top to bottom. The remaining wastewater is then discharged through the first conveying pipe 11 and the second conveying pipe 12. Activated carbon or a special heavy metal adsorbent is used on the outside of the machine body 1 to further remove trace heavy metals from the remaining wastewater. Nanofiltration membrane is then used to significantly reduce ions and impurities in the wastewater, thereby improving the water quality and achieving "zero discharge" of wastewater.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A deep filtration treatment device for acidic wastewater from germanium smelting, comprising a body (1), characterized in that, The machine body (1) is provided with a first chamber (2) for storing arsenic-containing wastewater and a second chamber (3) for storing non-arsenic-containing wastewater. The first chamber (2) and the second chamber (3) are each provided with four sedimentation tanks (6) for settling sludge. The first chamber (2) and the second chamber (3) are each provided with four sets of vertical stirring plates (7) and one horizontal stirring blade (8) for mixing wastewater and chemical reagents. The first chamber (2) and the second chamber (3) are each provided with four pressing plates (9) for pressing sludge. The pressing plates (9) are equipped with reverse osmosis membranes (10) for discharging excess water from the sludge. The machine body (1) is provided with a driving mechanism for driving the vertical stirring plates (7) and the horizontal stirring blades (8). The machine body (1) is provided with a switching mechanism for increasing the stirring range or performing sludge pressing operations by connecting or separating the vertical stirring plates (7) and the pressing plates (9). The bottom of the first chamber (2) and the bottom of the second chamber (3) are each connected by a central guide block (4) and four side guide blocks (5) to form four sedimentation tanks (6). The central guide block (4) is composed of a regular tetrahedron and a cuboid from top to bottom, and the side guide blocks (5) are composed of a right triangular prism and a cuboid from top to bottom. A set of vertical stirring plates (7) moves against the upper and lower ends of a reverse osmosis membrane (10). The drive mechanism includes two drive motors (15) fixedly mounted above the first chamber (2) and the second chamber (3) respectively by two mounting brackets. A rotating shaft (16) fixedly connected to the output end of the drive motor (15) is rotatably mounted at the lower end of one of the mounting brackets. A mounting chamber (21) is rotatably connected at the lower end of the rotating shaft (16). A first bevel gear (17) is keyed to one end of the rotating shaft (16) located in the mounting chamber (21). Four rotating shafts (18) are installed through one of the mounting chambers (21). A second bevel gear (19) meshing with the first bevel gear (17) is keyed to one end of the rotating shaft (18) located in the mounting chamber (21). One of the rotating shafts (16) is threaded above the machine body (1), and one end of the rotating shaft (16) located below the installation chamber (21) is fixedly connected to a horizontal stirring blade (8). One end of the rotating shaft (18) located outside the installation chamber (21) is fixedly connected to a set of vertical stirring plates (7) through two arc plates (20). The switching mechanism includes four bidirectional telescopic rods (24) that are slidably installed above the first chamber (2) and the second chamber (3). The two telescopic ends of one of the bidirectional telescopic rods (24) are respectively fixedly connected to a connecting rod (26) and a nut (28). The lower end of one of the connecting rods (26) is movably connected to a pressing plate (9) and a set of vertical stirring plates (7). The four closed and abutting nuts (28) form a set, and the four closed and abutting nuts (28) are installed at the thread of a rotating shaft (16). Four vertical slide rails (22) are fixedly installed on the upper end of the first chamber (2) and the second chamber (3). A bidirectional telescopic rod (24) is slidably installed on a vertical slide rail (22) through a sliding bracket (23). Four guide grooves (25) are opened in the first chamber (2) and the second chamber (3). A connecting rod (26) is slidably installed in a guide groove (25) through a slide rod (27). The guide groove (25) consists of a horizontal groove and a vertical groove. Each of the pressing plate (9) and the set of vertical stirring plates (7) is provided with a moving groove (29). The two arc plates (20) are rotatably connected to an annular piece (32) which is fixedly connected to the installation chamber (21). The upper and lower ends of the annular piece (32) are fixedly connected to a limiting slide rail (33). The lower end of the connecting rod (26) is movably fitted into the moving groove (29) and the limiting slide rail (33). A first magnetic block (30) is fixedly installed on the side end of the moving groove (29) of the pressing plate (9), a second magnetic block (31) is fixedly installed on both sides of the lower end of the connecting rod (26), and a third magnetic block (34) is fixedly installed on the side end of the limiting slide rail (33). The first magnetic block (30), the second magnetic block (31) and the third magnetic block (34) are all wrapped by a corrosion-resistant shell. The second magnetic block (31) is attracted to the opposite poles of the first magnetic block (30) and the third magnetic block (34).

2. The deep filtration treatment device for acidic wastewater from germanium smelting according to claim 1, characterized in that, The sedimentation tank (6) is slidably fitted with a discharge plate (13) for discharging sludge, and the lower end of the machine body (1) is rotatably fitted with a locking rod (14) that moves against the lower end of the discharge plate (13).

3. The deep filtration treatment device for acidic wastewater from germanium smelting according to claim 1, characterized in that, A first conveying pipe (11) for conveying arsenic-removed wastewater is installed between the first chamber (2) and the second chamber (3), and a second conveying pipe (12) for conveying wastewater in the second chamber (3) is installed on the side of the second chamber (3) away from the first conveying pipe (11).

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