Acid mine wastewater permeation filtration treatment system

Abstract

The utility model relates to the technical field of mine wastewater treatment, in particular to an acid mine wastewater permeation filtration treatment system which comprises a hollow water inlet tank, a hollow neutralizing tank is mounted on the front side of the water inlet tank; a plurality of stirring shafts are rotationally mounted in the neutralization box, and a plurality of stirring blades are coaxially connected to the stirring shafts through keys; a plurality of reverse osmosis membrane filters are mounted between the liquid discharge pipe and the discharge box; filtered acid mine wastewater enters a neutralization tank, alkaline substances are uniformly discharged into the neutralization tank through packing augers on two sides and a plurality of discharge pipes, a plurality of stirring shafts and a plurality of stirring blades are used for stirring the acid mine wastewater at the same time, and the alkaline substances are uniformly mixed with the acid mine wastewater; by means of the design, PH neutralization treatment on the acid mine wastewater is facilitated, the PH neutralization treatment effect and treatment efficiency of the acid mine wastewater are guaranteed, and meanwhile the filtration treatment effect of the acid mine wastewater is also guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of mine wastewater treatment technology, specifically to an acidic mine wastewater permeation filtration treatment system. Background Technology

[0002] Acidic mine wastewater mainly originates from mine pit water, leaching water from spoil heaps, mineral processing wastewater, and tailings wastewater discharged during mining operations. During mining, various metal sulfide minerals associated with the ore body, under the combined action of air, water, and microorganisms, form a sulfuric acid-ferric sulfate solution, dissolving various ions from the minerals and producing acidic wastewater containing copper, iron, lead, zinc, cadmium, arsenic, etc. Given the harmfulness of acidic mine wastewater, direct discharge without treatment will cause serious environmental pollution. Currently, there are many methods for treating acidic mine wastewater, including physicochemical methods, microbiological methods, and constructed wetland methods.

[0003] Because acidic wastewater from mines contains a large amount of acidic substances, pH neutralization is necessary during its treatment. This involves using alkaline substances (such as lime and sodium hydroxide) to neutralize the wastewater and bring its pH value to a suitable range. Neutralization helps precipitate heavy metal ions from the wastewater, facilitating subsequent treatment. However, in existing acidic wastewater treatment processes, workers directly add alkaline substances to the wastewater, which makes it difficult for the substances to dissolve evenly, affecting the efficiency and effectiveness of pH neutralization. Therefore, we propose a permeation filtration treatment system for acidic mine wastewater. Utility Model Content

[0004] The purpose of this invention is to provide an acidic mine wastewater permeation filtration treatment system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An acidic mine wastewater permeation filtration treatment system includes a hollow inlet tank with an inlet installed on the rear top of the tank and a filter screen fixed inside the tank.

[0007] A hollow neutralization tank is installed on the front side of the water inlet tank, and a connecting groove is provided at the connection between the neutralization tank and the water inlet tank; two symmetrical feeding pipes are installed on the top of the neutralization tank, and a feeding pipe is provided at the top end of the feeding pipe. Multiple discharge pipes that pass through the neutralization tank are fixed at the bottom of the feeding pipe; an auger is rotatably installed inside each feeding pipe. The two opposite ends of the two augers pass through the feeding pipe and are coaxially keyed to a secondary bevel gear. A main bevel gear meshes between the two secondary bevel gears.

[0008] Multiple stirring shafts are rotatably mounted inside the neutralization chamber. Multiple stirring blades are coaxially keyed to the stirring shafts. The upper and lower ends of the stirring shafts located in the middle pass through the neutralization chamber. The top of the stirring shafts is coaxially keyed to the main bevel gear. The bottom of the stirring shafts passes through the bottom of the neutralization chamber and is coaxially keyed to the worm gear. A drive shaft is located below the neutralization chamber. Multiple worms are coaxially keyed to the drive shaft. The worms mesh with corresponding worm gears. A motor for driving the worms to rotate is installed on the front side of the drive shaft.

[0009] A hollow discharge box is installed on the front side of the neutralization tank, and a drain pipe is installed below the discharge box. Multiple reverse osmosis membrane filters are installed between the drain pipe and the discharge box.

[0010] A liquid pump is installed below the discharge box. The outlet of the liquid pump is connected to the discharge box via a straight pipe, and the inlet of the liquid pump is connected to the neutralization box via a bent pipe.

[0011] Preferably, the bottom of the neutralization box is fixedly connected to a bracket by bolts, both ends of the drive shaft are rotatably connected to the inner wall of the bracket by bearings, the motor is fixedly connected to the front end of the bracket by bolts, and the bottom end of the stirring shaft is rotatably connected to the inner bottom of the bracket by bearings.

[0012] Preferably, the neutralization box is fixed with support legs at the four corners of its bottom, and the support legs are fixedly connected to the neutralization box with bolts.

[0013] Preferably, a feeding hopper is installed above the two feeding pipes, with the bottom center of the feeding hopper being higher in the middle and lower on both sides; connecting pipes are fixed on both sides of the bottom of the feeding hopper, and the connecting pipes are respectively connected to the feeding pipes on both sides.

[0014] Preferably, the water inlet tank is fixedly connected to the neutralization tank by bolts, and the discharge tank is fixedly connected to the neutralization tank by bolts.

[0015] Preferably, the connection between the water inlet tank and the neutralization tank is fixedly connected by two reinforcing plates with bolts, and the reinforcing plates are fixedly connected to the water inlet tank and the neutralization tank with bolts.

[0016] Preferably, the stirring blades are fixedly connected to the stirring shaft by bolts, and multiple stirring blades are distributed linearly and equally spaced in the vertical direction.

[0017] Preferably, the discharge pipe is fixedly connected to the outer wall of the feeding pipe by bolts, and multiple discharge pipes are distributed linearly at equal intervals.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] The system consists of an inlet tank, a neutralization tank, and a discharge tank. Acidic mining wastewater enters the inlet tank, where it is filtered by a filter screen to remove impurities. The filtered wastewater then enters the neutralization tank, where alkaline substances are evenly discharged through screw conveyors on both sides and multiple discharge pipes. Multiple stirring shafts and blades simultaneously agitate the wastewater, ensuring a uniform mixture of alkaline substances and pH neutralization. This design facilitates pH neutralization of acidic mining wastewater, guaranteeing both the effectiveness and efficiency of the neutralization process, while also ensuring effective filtration. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

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

[0022] Figure 3 This is a partial structural schematic diagram of the present invention;

[0023] Figure 4 This is a schematic diagram of the feeding hopper in this utility model;

[0024] In the picture:

[0025] 1. Water inlet tank; 10. Water inlet; 11. Filter screen; 12. Reinforcing plate;

[0026] 2. Neutralization box; 20. Support frame; 21. Support leg; 22. Drive shaft; 220. Worm gear; 23. Worm wheel; 24. Stirring shaft; 240. Stirring blade; 25. Main bevel gear; 26. Secondary bevel gear; 27. Screwdriver; 28. Feed pipe; 280. Feed inlet pipe; 281. Discharge pipe; 29. ​​Feed hopper; 290. Connecting pipe;

[0027] 3. Discharge box; 30. Reverse osmosis membrane filter; 31. Drain pipe;

[0028] 4. Liquid pump; 40. Bend; 41. Straight pipe;

[0029] 5. Motor. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0031] This embodiment provides a technical solution:

[0032] Please see Figures 1-4 As shown, an acidic mine wastewater permeation filtration treatment system includes a hollow inlet tank 1, with an inlet 10 installed on the rear top of the inlet tank 1, and a filter screen 11 fixed inside the inlet tank 1; a hollow neutralization tank 2 is installed on the front of the inlet tank 1, and a connecting groove is provided at the connection between the neutralization tank 2 and the inlet tank 1; two symmetrical feeding pipes 28 are installed on the top of the neutralization tank 2, with a feeding pipe 280 at one end of the feeding pipe 28, and multiple discharge pipes 281 that penetrate into the neutralization tank 2 are fixed at the bottom of the feeding pipe 28; augers 27 are rotatably installed inside each feeding pipe 28, with two opposite ends of the two augers 27 passing through the feeding pipe 28 and coaxially keyed to a secondary bevel gear 26, and a main bevel gear 25 meshing between the two secondary bevel gears 26; multiple stirring shafts 24 are rotatably installed inside the neutralization tank 2, and multiple stirring shafts 24 are coaxially keyed to each stirring shaft 24. The stirring blade 240 and the stirring shaft 24 located in the middle both pass through the neutralization tank 2. The top end of the stirring shaft 24 is coaxially keyed to the main bevel gear 25. The bottom end of the stirring shaft 24 passes through the bottom end of the neutralization tank 2 and is coaxially keyed to the worm gear 23. A drive shaft 22 is provided below the neutralization tank 2. Multiple worms 220 are coaxially keyed on the drive shaft 22. The worms 220 mesh with the corresponding worm gears 23. A motor 5 for driving the worms 220 to rotate is installed on the front side of the drive shaft 22. A hollow discharge box 3 is installed on the front side of the neutralization tank 2. A drain pipe 31 is installed below the discharge box 3. Multiple reverse osmosis membrane filters 30 are installed between the drain pipe 31 and the discharge box 3. A liquid pump 4 is installed below the discharge box 3. A straight pipe 41 connected to the discharge box 3 is installed at the outlet of the liquid pump 4. A bent pipe 40 connected to the neutralization tank 2 is installed at the inlet of the liquid pump 4.

[0033] In this embodiment, the bottom of the neutralization box 2 is fixedly connected to the bracket 20 by bolts, the two ends of the drive shaft 22 are rotatably connected to the inner wall of the bracket 20 by bearings, the motor 5 is fixedly connected to the front end of the bracket 20 by bolts, and the bottom end of the stirring shaft 24 is rotatably connected to the inner bottom of the bracket 20 by bearings.

[0034] In this embodiment, support legs 21 are fixed at the four corners of the bottom of the neutralization box 2, and the support legs 21 are fixedly connected to the neutralization box 2 by bolts. The support legs 21 provide stable support for the neutralization box 2, ensuring the stability of the device.

[0035] In this embodiment, a feeding hopper 29 is installed above the two feed pipes 280. The bottom center of the feeding hopper 29 is higher in the middle and lower on both sides. Connecting pipes 290 are fixed on both sides of the bottom of the feeding hopper 29, and the connecting pipes 290 are connected to the feed pipes 280 on both sides respectively. The feeding hopper 29 and connecting pipes 290 facilitate the feeding of alkaline substances into the feed pipes 280 on both sides.

[0036] In this embodiment, the water inlet tank 1 is fixedly connected to the neutralization tank 2 by bolts, and the discharge tank 3 is fixedly connected to the neutralization tank 2 by bolts. The bolt fixing method ensures the connection stability between the water inlet tank 1, the neutralization tank 2, and the discharge tank 3, and ensures the overall reliability of the device.

[0037] In this embodiment, two reinforcing plates 12 are bolted to the connection between the water inlet tank 1 and the neutralization tank 2. The reinforcing plates 12 are bolted to the water inlet tank 1 and the neutralization tank 2. The reinforcing plates 12 increase the reliability of the connection between the water inlet tank 1 and the neutralization tank 2.

[0038] In this embodiment, the stirring blades 240 are fixedly connected to the stirring shaft 24 by bolts, and multiple stirring blades 240 are linearly and equally spaced in the vertical direction. The arrangement of the stirring blades 240 facilitates the uniform mixing of alkaline substances and acidic mine wastewater, ensuring the effective pH treatment of the acidic mine wastewater.

[0039] In this embodiment, the discharge pipe 281 is fixedly connected to the outer wall of the feeding pipe 28 by bolts, and multiple discharge pipes 281 are distributed linearly at equal intervals. Multiple discharge pipes 281 facilitate the uniform discharge of alkaline substances into the acidic mine wastewater, which helps to ensure the pH treatment effect of the acidic mine wastewater.

[0040] It should be added that the reverse osmosis membrane filter 30 in this embodiment is a high-precision water treatment device. Its core lies in the application of the reverse osmosis (RO) membrane. The RO membrane has selective permeability, allowing only water molecules to pass through while blocking dissolved solids, microorganisms, organic matter, and other large molecules. Under certain pressure, usually provided by a pressure pump, water molecules move from high-concentration areas to low-concentration areas, thereby achieving water purification. A reverse osmosis membrane filter typically consists of a pre-filter, a reverse osmosis membrane module, a pressure pump, and a cleaning device. The pre-filter removes large suspended solids and particles to protect the RO membrane from damage; the RO membrane module is the core component of the filter, composed of multiple layers of thin films with tiny pores; the pressure pump provides sufficient pressure to allow water molecules to pass through the RO membrane; and the cleaning device periodically cleans the RO membrane to extend its service life. Using the reverse osmosis membrane filter 30 in this embodiment is beneficial for purifying acidic mine wastewater.

[0041] It is worth noting that the motor 5 involved in this embodiment is a conventional technology and will not be described in detail here.

[0042] In practical use, the user first connects the power supply to the motor 5. The motor 5 starts working, and the output shaft of the motor 5 rotates, driving the transmission shaft 22 and the worm gear 220 to rotate. Since the worm gear 220 meshes with the worm wheel 23, the worm wheel 23 drives the stirring shaft 24 and multiple stirring blades 240 to rotate. The stirring blades 240 rotate and stir the acidic mining wastewater in the neutralization tank 2. At the same time, the stirring shaft 24 drives the main bevel gear 25 to rotate. Since the main bevel gear 25 meshes with the secondary bevel gears 26 on both sides, the secondary bevel gears 26 drive the augers 27 on both sides to rotate. Then, the user puts the alkaline substance into the feeding hopper 29. The alkaline substance enters the feeding pipe 28 through the connecting pipe 290. Under the rotation of the auger 27, the alkaline substance falls into the acidic mining wastewater in the neutralization tank 2 through multiple discharge pipes 281. With the rotation of the stirring blades 240, the acidic mining wastewater can be neutralized.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An acid mine drainage infiltration filtration treatment system comprising a hollow water inlet tank (1), characterized in that: The top rear side of the water inlet tank (1) is provided with a water inlet (10), and the inside of the water inlet tank (1) is fixedly provided with a filter screen (11); The front side of the water inlet tank (1) is provided with a hollow neutralizing tank (2), and the connecting part of the neutralizing tank (2) and the water inlet tank (1) is provided with a connecting groove; the top of the neutralizing tank (2) is provided with two symmetrical feeding pipes (28), one end of the top end of the feeding pipe (28) is provided with a feeding pipe (280), and the bottom of the feeding pipe (28) is fixedly provided with a plurality of discharge pipes (281) penetrating into the neutralizing tank (2); the feeding pipe (28) is rotatably provided with a screw conveyor (27), and the two opposite ends of the two screw conveyors (27) penetrate through the feeding pipe (28) and are coaxially connected with a secondary bevel gear (26); the two secondary bevel gears (26) are meshed with a primary bevel gear (25); The inside of the neutralizing tank (2) is rotatably provided with a plurality of stirring shafts (24), the stirring shaft (24) is coaxially connected with a plurality of stirring blades (240), the upper and lower ends of the stirring shaft (24) located in the middle penetrate through the neutralizing tank (2), the top end of the stirring shaft (24) is coaxially connected with the primary bevel gear (25); the bottom end of the stirring shaft (24) penetrates through the bottom end of the neutralizing tank (2) and is coaxially connected with a worm gear (23); the bottom of the neutralizing tank (2) is provided with a transmission shaft (22), the transmission shaft (22) is coaxially connected with a plurality of worm gears (220), the worm gears (220) are meshed with the corresponding worm gears (23), and the front side of the transmission shaft (22) is provided with a motor (5) for driving the worm gears (220) to rotate; The front side of the neutralizing tank (2) is provided with a hollow discharge tank (3), the lower side of the discharge tank (3) is provided with a liquid discharge pipe (31), and a plurality of reverse osmosis membrane filters (30) are arranged between the liquid discharge pipe (31) and the discharge tank (3); The lower side of the discharge tank (3) is provided with a liquid pump (4), the outlet of the liquid pump (4) is provided with a straight pipe (41) connected with the discharge tank (3), and the inlet of the liquid pump (4) is provided with a bent pipe (40) connected with the neutralizing tank (2).

2. The acid mine drainage permeable reactive barrier treatment system according to claim 1, wherein: The bottom of the neutralizing tank (2) is fixedly connected with a support (20) through bolts, the two ends of the transmission shaft (22) are rotatably connected with the inner wall of the support (20) through bearings, the front end of the motor (5) is fixedly connected with the support (20) through bolts, and the bottom end of the stirring shaft (24) is rotatably connected with the inner bottom of the support (20) through bearings.

3. The acid mine drainage permeable reactive barrier treatment system of claim 1, wherein: The bottom of the neutralizing tank (2) is fixedly connected with a support (20) through bolts, the two ends of the transmission shaft (22) are rotatably connected with the inner wall of the support (20) through bearings, the front end of the motor (5) is fixedly connected with the support (20) through bolts, and the bottom end of the stirring shaft (24) is rotatably connected with the inner bottom of the support (20) through bearings.

4. The acid mine drainage permeable reactive barrier treatment system according to claim 1, wherein: The bottom of the neutralizing tank (2) is fixedly connected with a support (20) through bolts, the two ends of the transmission shaft (22) are rotatably connected with the inner wall of the support (20) through bearings, the front end of the motor (5) is fixedly connected with the support (20) through bolts, and the bottom end of the stirring shaft (24) is rotatably connected with the inner bottom of the support (20) through bearings.

5. The acid mine drainage permeable reactive barrier treatment system according to claim 1, wherein: The water inlet tank (1) is fixedly connected with the neutralizing tank (2) through bolts, and the discharge tank (3) is fixedly connected with the neutralizing tank (2) through bolts.

6. The acid mine drainage permeable reactive barrier treatment system according to claim 1, wherein: The connecting part of the water inlet tank (1) and the neutralizing tank (2) is fixedly connected with two reinforcing plates (12) through bolts, and the reinforcing plates (12) are fixedly connected with the water inlet tank (1) and the neutralizing tank (2) through bolts.

7. The acid mine drainage permeable reactive barrier treatment system according to claim 1, wherein: The stirring blades (240) are fixedly connected with the stirring shaft (24) through bolts, and a plurality of stirring blades (240) are linearly and equidistantly distributed in the vertical direction.

8. The acid mine drainage permeable reactive barrier treatment system according to claim 1, wherein: The discharge pipes (281) are fixedly connected with the outer wall of the feeding pipe (28) through bolts, and a plurality of discharge pipes (281) are linearly and equidistantly distributed.

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