Circulating slow-release device for acid mine wastewater

Abstract

The utility model relates to the technical field of wastewater treatment equipment, in particular to a circulating slow-release device for acid mine wastewater, which comprises a V-shaped reaction box, a water inlet pipe arranged on the left side of the V-shaped reaction box, a circulating assembly arranged on the front side of the V-shaped reaction box and comprising a circulating pump, and a liquid pumping pipe connected with the input end of the circulating pump. The output end of the circulating pump is connected with a liquid feeding pipe, the bottom of the right side of the V-shaped reaction box is provided with a blow-off pipe, the top of the V-shaped reaction box is sleeved with a box cover, the top of the box cover is provided with a plurality of rectangular operation openings which are distributed at equal intervals in the left-right direction, and each rectangular operation opening is provided with a detachable slow release assembly. According to the circulating type slow-release device for the acid mine wastewater, the circulating assembly is arranged and comprises the circulating pump, the liquid pumping pipe, the liquid feeding pipe, the water guide main pipe and the water return branch pipe, so that wastewater circulation is achieved, the wastewater makes contact with the slow-release material repeatedly, and the sufficiency of a neutralization reaction and the treatment efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment equipment, in particular to a circulating slow-release device for acid mine wastewater. Background Art

[0002] Acid mine drainage (AMD) is a common pollutant in mining operations. It is primarily produced by the oxidation and dissolution of sulfide minerals (such as pyrite), resulting in the contamination of water with large amounts of sulfuric acid and heavy metal ions (such as iron, copper, zinc, and lead).

[0003] These acidic wastewaters usually have the following characteristics:

[0004] 1. Strong acidity: The pH value of acidic mine wastewater is usually lower than 3. The strong acidic environment will cause metal ions to be highly soluble.

[0005] 2. High heavy metal content: The wastewater contains a variety of toxic heavy metal ions, which pose a serious threat to aquatic organisms and the surrounding ecological environment.

[0006] 3. Large volume: The amount of wastewater generated during mining is large and lasts for a long time, making it difficult to treat.

[0007] To address the environmental pollution problem of acid mine drainage, an acid mine drainage slow-release device has been developed. This device mainly neutralizes the acidic components in the wastewater by slowly releasing alkaline substances, reducing pollution to the environment.

[0008] The working principle of the existing acid mine drainage slow-release device is to install one or more slow-release materials, which can gradually release alkaline substances (such as calcium hydroxide or limestone) to neutralize the acidic substances in the wastewater. The specific operation process is as follows:

[0009] 1. Wastewater input: Acid mine drainage enters the slow-release device through a pipeline.

[0010] 2. Slow-release reaction: When wastewater comes into contact with the slow-release material, the slow-release material gradually releases alkaline substances and begins to neutralize the acidic substances in the wastewater.

[0011] 3. Metal precipitation: During the neutralization process, heavy metal substances gradually precipitate.

[0012] 4. Discharge: The treated wastewater meets the discharge standards.

[0013] However, the existing slow-release device for acid mine drainage has defects, specifically, it does not have a circulation function. Due to the lack of a circulation system, the contact time and contact area between wastewater and slow-release materials are limited, resulting in insufficient neutralization reaction and low treatment efficiency. In view of this, we propose a circulating slow-release device for acid mine drainage. Utility Model Content

[0014] The purpose of the utility model is to provide a circulating slow-release device for acid mine wastewater to solve the problems raised in the above background technology.

[0015] To achieve the above objectives, the present invention provides the following technical solutions:

[0016] The circulating slow-release device for acid mine drainage includes a V-shaped reaction box as the main reaction container for containing acid mine drainage and slow-release material for neutralization reaction. A water inlet pipe is provided on the left side of the V-shaped reaction box near the top for inputting acid mine drainage into the V-shaped reaction box. A circulating component is provided on the front side of the V-shaped reaction box for circulating wastewater so that it repeatedly contacts the slow-release material to improve the efficiency of the neutralization reaction. The circulating component includes a circulating pump, which is connected to an external power supply to suck wastewater and return it to the reaction box to achieve circulation. The input end of the ring pump is connected to a liquid extraction pipe, the input end of the liquid extraction pipe passes through the right side of the V-shaped reaction box, and extracts wastewater from the V-shaped reaction box to the circulation pump. The output end of the circulation pump is connected to a liquid delivery pipe, and the wastewater extracted by the circulation pump is returned to the reaction box. The output end of the liquid delivery pipe is provided with a water guide pipe, which distributes the wastewater returned to the reaction box. The right side of the outer wall of the water guide pipe is provided with a plurality of return water branches arranged equidistantly in front and back. The output end of the return water branch pipe passes through the left side of the V-shaped reaction box, and returns the wastewater distributed by the water guide pipe to the V-shaped reaction box. A sewage pipe is provided at the bottom of the right side of the V-shaped reaction box.

[0017] Used to discharge treated wastewater or sediment, the top of the V-shaped reaction box is provided with a box cover, which is used to close the top of the V-shaped reaction box to prevent external contamination from entering, and the top of the box cover is provided with a plurality of rectangular operation ports arranged equidistantly on the left and right for installing and replacing slow-release components, each of the rectangular operation ports is provided with a detachable slow-release component for slowly releasing alkaline substances to neutralize acidic components in the wastewater;

[0018] The slow-release component includes a hollow material box for accommodating and fixing the slow-release material so that it is in full contact with the wastewater. The bottom of the hollow material box passes through a rectangular operating port to a V-shaped reaction box. The hollow material box is filled with a slow-release material, which is usually a carbonate rock and biomass charcoal that have been modified, granulated and coated. These materials can continuously release alkaline substances within a certain period of time, thereby effectively neutralizing the acidic components in the wastewater. A frame-shaped limiting plate is provided on the outer wall of the hollow material box near the top. The bottom of the frame-shaped limiting plate is against the top of the box cover to fix the position of the hollow material box.

[0019] Preferably, the water inlet pipe and the sewage pipe are both provided with control valves, so that the user can control the opening and closing of the water inlet pipe and the sewage pipe.

[0020] Preferably, the bottom of the V-shaped reaction box is a semicircular structure, and a discharge auger is rotatably connected between the left and right sides of the inner wall of the V-shaped reaction box and at the bottom, and the discharge auger is used to remove sediment at the bottom of the V-shaped reaction box.

[0021] Preferably, a motor is provided on the left side of the V-shaped reaction box through a mounting seat, and the motor works with an external power supply. The output shaft of the motor is coaxially connected to the left end of the discharge auger shaft, and a sealing structure is provided at the connection between the discharge auger shaft and the V-shaped reaction box. The sealing structure can adopt a double-end mechanical seal, or use a sealed bearing seat to ensure efficient sealing, and the discharge auger is driven to rotate by the motor.

[0022] Preferably, a mounting plate is provided on the front side of the V-shaped reaction box and close to the right side, and the circulation pump is installed on the top of the mounting plate for fixing and supporting the circulation pump.

[0023] Preferably, the front side of the V-shaped reaction box is provided with a plurality of supporting convex plates arranged at equal distances from left to right, and the liquid delivery pipe passes through the plurality of supporting convex plates in sequence to support and fix the liquid delivery pipe.

[0024] Preferably, the bottom of the V-shaped reaction box is provided with a plurality of brackets arranged equidistantly on the left and right to provide structural support and stability.

[0025] Preferably, a semicircular avoidance groove is provided at the bottom of the hollow material box for avoiding the discharge auger, and handle grooves are provided on the left and right sides of the hollow material box and near the top to facilitate the user to lift the hollow material box upwards and facilitate the staff to clean the hollow material box.

[0026] Preferably, a box cover is provided on the top of the hollow material box to close the top of the hollow material box, and a handle is provided on the top of the box cover to facilitate staff to remove the box cover and add slow-release material into the hollow material box.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. The circulating slow-release device for acid mine drainage realizes the circulation of wastewater by setting up a circulation component, including a circulation pump, a liquid extraction pipe, a liquid delivery pipe, a water guide pipe and a return branch pipe, so that the wastewater repeatedly contacts the slow-release material, greatly improving the adequacy of the neutralization reaction and the treatment efficiency.

[0029] 2. The circulating slow-release device for acid mine drainage is equipped with multiple rectangular operating ports on the box cover. Each operating port can be installed with a slow-release component, so that the slow-release material is evenly distributed at multiple positions, increasing the contact area between the wastewater and the slow-release material, thereby improving the neutralization efficiency.

[0030] 3. The circulating slow-release device for acid mine drainage is equipped with a discharge auger and a sewage pipe at the bottom of the reaction box. The discharge auger is driven by a motor to rotate and the sediment and treated sewage are discharged from the sewage pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is a schematic diagram of the overall decomposition structure of the utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the slow-release component in the present utility model;

[0034] Figure 4 Schematic diagram of the cross-sectional structure of the V-shaped reaction box in the present invention;

[0035] In the figure: 1. V-shaped reaction box; 10. Water inlet pipe; 11. Sewage pipe; 12. Mounting plate; 13. Support convex plate; 14. Bracket; 2. Circulation component; 20. Circulation pump; 21. Liquid extraction pipe; 22. Liquid delivery pipe; 23. Water guide pipe; 24. Return branch pipe; 3. Box cover; 30. Rectangular operation port; 4. Slow-release component; 40. Hollow material box; 400. Semi-circular avoidance groove; 401. Handle groove; 41. Frame-shaped limit plate; 42. Box cover; 43. Handle; 5. Discharge auger; 6. Motor. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0039] The circulating slow-release device for acid mine drainage includes a V-shaped reaction box 1 as a main reaction container for containing acid mine drainage and slow-release materials for neutralization reaction. A water inlet pipe 10 is provided on the left side and near the top of the V-shaped reaction box 1 for inputting acid mine drainage into the V-shaped reaction box 1. A circulation component 2 is provided on the front side of the V-shaped reaction box 1 for circulating wastewater so that it repeatedly contacts the slow-release material to improve the efficiency of the neutralization reaction. The circulation component 2 includes a circulation pump 20. The circulation pump 20 is connected to an external power supply to suck the wastewater and return it to the reaction box to achieve circulation. The input end of the circulation pump 20 is connected to the power supply. A liquid extraction pipe 21 is connected, the input end of the liquid extraction pipe 21 passes through the right side of the V-shaped reaction box 1, and extracts wastewater from the V-shaped reaction box 1 to the circulation pump 20. The output end of the circulation pump 20 is connected to a liquid delivery pipe 22, which returns the wastewater extracted by the circulation pump 20 to the reaction box. The output end of the liquid delivery pipe 22 is provided with a water guide pipe 23 to distribute the wastewater returned to the reaction box. The right side of the outer wall of the water guide pipe 23 is provided with a plurality of return water branches 24 arranged equidistantly front and back. The output end of the return water branch 24 passes through the left side of the V-shaped reaction box 1 to return the wastewater distributed by the water guide pipe 23 to the V-shaped reaction box 1. A sewage pipe 11 is provided at the bottom of the right side of the V-shaped reaction box 1;

[0040] For discharging treated wastewater or sediment, a cover 3 is provided on the top of the V-shaped reaction box 1 to seal the top of the V-shaped reaction box 1 to prevent external contamination from entering. A plurality of rectangular operating ports 30 are arranged equidistantly on the top of the cover 3 for installing and replacing slow-release components 4. Each rectangular operating port 30 is provided with a detachable slow-release component 4 for slowly releasing alkaline substances to neutralize acidic components in the wastewater.

[0041] The slow-release component 4 includes a hollow material box 40, which accommodates and fixes the slow-release material so that it is in full contact with the wastewater. The bottom of the hollow material box 40 passes through the rectangular operating port 30 to the V-shaped reaction box 1. The hollow material box 40 is filled with a slow-release material, which is usually a carbonate rock and biomass charcoal that have been modified, granulated and coated. These materials can continuously release alkaline substances within a certain period of time, thereby effectively neutralizing the acidic components in the wastewater. A frame-shaped limiting plate 41 is provided on the outer wall of the hollow material box 40 near the top. The bottom of the frame-shaped limiting plate 41 is against the top of the box cover 3 to fix the position of the hollow material box 40.

[0042] In this embodiment, control valves are provided on both the water inlet pipe 10 and the sewage discharge pipe 11 to facilitate users to control the opening and closing of the water inlet pipe 10 and the sewage discharge pipe 11 .

[0043] Specifically, the bottom of the V-shaped reaction box 1 is a semicircular structure. A discharge auger 5 is rotatably connected between the left and right sides of the inner wall of the V-shaped reaction box 1 and located at the bottom. The discharge auger 5 is used to remove sediment at the bottom of the V-shaped reaction box 1.

[0044] Furthermore, a motor 6 is provided on the left side of the V-shaped reaction box 1 through a mounting seat. The motor 6 operates with an external power supply. The output shaft of the motor 6 is coaxially connected to the left end of the rotating shaft of the discharge auger 5, and a sealing structure is provided at the connection between the rotating shaft of the discharge auger 5 and the V-shaped reaction box 1. The sealing structure can adopt a double-end mechanical seal, or use a sealed bearing seat to ensure efficient sealing, and the discharge auger 5 is driven to rotate by the motor 6.

[0045] Furthermore, a mounting plate 12 is provided on the front side and near the right side of the V-shaped reaction box 1 , and the circulation pump 20 is installed on the top of the mounting plate 12 for fixing and supporting the circulation pump 20 .

[0046] Furthermore, a plurality of support convex plates 13 equidistantly arranged on the left and right sides are provided on the front side of the V-shaped reaction box 1 , and the liquid delivery pipe 22 passes through the plurality of support convex plates 13 in sequence to support and fix the liquid delivery pipe 22 .

[0047] Furthermore, a plurality of brackets 14 are provided at the bottom of the V-shaped reaction box 1 and are arranged equidistantly on the left and right sides to provide structural support and stability.

[0048] Furthermore, a semicircular avoidance groove 400 is provided at the bottom of the hollow material box 40 for avoiding the discharge auger 5, and handle grooves 401 are provided on the left and right sides of the hollow material box 40 and near the top, so that the user can lift the hollow material box 40 upwards and the staff can clean the hollow material box 40 conveniently.

[0049] Furthermore, a box cover 42 is provided on the top of the hollow material box 40 to close the top of the hollow material box 40 , and a handle 43 is provided on the top of the box cover 42 to facilitate staff to remove the box cover 42 and add slow-release material into the hollow material box 40 .

[0050] When using the circulating slow-release device for acid mine drainage of this embodiment, as needed, the slow-release material is filled into the hollow material box 40, and the hollow material box 40 is installed at the rectangular operation port 30 of the box cover 3, ensuring that the slow-release material box 40 is firmly fixed, and the water inlet system is started. The acid mine drainage enters the V-shaped reaction box 1 through the water inlet pipe 10, and the circulation pump 20 is started to make the wastewater be sucked into the circulation system through the liquid extraction pipe 21. Under the push of the circulation pump 20, the wastewater is distributed to multiple return water branches 24 through the liquid delivery pipe 22 and the water guide pipe 23, and then enters the V-shaped reaction box 1 again. Through the circulation system, the wastewater is repeatedly in contact with the slow-release material, thereby improving the sufficiency and treatment efficiency of the neutralization reaction. In the reaction box 1, the wastewater is After water comes into contact with the slow-release material, the slow-release material gradually releases alkaline substances and begins to neutralize the acidic components in the wastewater. During the neutralization process, heavy metal ions gradually precipitate to form precipitates. The motor 6 is started to drive the discharge auger 5 to rotate, and the bottom precipitates are concentrated to the drain pipe 11. The precipitates and treated wastewater are discharged from the device through the drain pipe 11 and the control valve. When the slow-release material is exhausted, the box cover 42 is removed by the handle 43, and new slow-release material is filled into the hollow material box 40. Through the above-mentioned usage method, the circulating slow-release device for acidic mine wastewater of the utility model can efficiently and stably treat acidic mine wastewater, neutralize the acidic components in the wastewater, meet environmental emission standards, and protect the surrounding environment.

[0051] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A circulating slow-release device for acid mine drainage, comprising a V-shaped reaction box (1), characterized in that: A water inlet pipe (10) is provided on the left side and near the top of the V-shaped reaction box (1), a circulation assembly (2) is provided on the front side of the V-shaped reaction box (1), and the circulation assembly (2) includes a circulation pump (20), the input end of the circulation pump (20) is connected to a liquid extraction pipe (21), the input end of the liquid extraction pipe (21) passes through the right side of the V-shaped reaction box (1), the output end of the circulation pump (20) is connected to a liquid delivery pipe (22), the output end of the liquid delivery pipe (22) is provided with a water guide pipe (23), a plurality of return water branches (24) arranged at equal distances from front to back are provided on the right side of the outer wall of the water guide pipe (23), the output end of the return water branch pipe (24) passes through the left side of the V-shaped reaction box (1), and the V-shaped A sewage pipe (11) is provided at the bottom of the right side of the reaction box (1), and a box cover (3) is provided on the top of the V-shaped reaction box (1). A plurality of rectangular operating ports (30) are arranged equidistantly on the left and right sides on the top of the box cover (3). Each of the rectangular operating ports (30) is provided with a detachable slow-release component (4). The slow-release component (4) includes a hollow material box (40). The bottom of the hollow material box (40) passes through the rectangular operating port (30) to the inside of the V-shaped reaction box (1). The hollow material box (40) is filled with slow-release material. A frame-shaped limiting plate (41) is provided on the outer wall of the hollow material box (40) near the top, and the bottom of the frame-shaped limiting plate (41) is against the top of the box cover (3).

2. The circulating slow-release device for acid mine drainage according to claim 1, characterized in that: The water inlet pipe (10) and the sewage discharge pipe (11) are both provided with control valves.

3. The circulating slow-release device for acid mine drainage according to claim 1, characterized in that: The bottom of the V-shaped reaction box (1) is a semicircular structure, and a discharge auger (5) is rotatably connected to a position between the left and right sides of the inner wall of the V-shaped reaction box (1) and located at the bottom.

4. The circulating slow-release device for acid mine drainage according to claim 3, characterized in that: A motor (6) is provided on the left side of the V-shaped reaction box (1) via a mounting seat, and an output shaft of the motor (6) is coaxially connected to the left end of the rotating shaft of the discharge auger (5).

5. The circulating slow-release device for acid mine drainage according to claim 1, characterized in that: A mounting plate (12) is provided on the front side of the V-shaped reaction box (1) and close to the right side, and the circulating pump (20) is installed on the top of the mounting plate (12).

6. The circulating slow-release device for acid mine drainage according to claim 1, characterized in that: The front side of the V-shaped reaction box (1) is provided with a plurality of supporting convex plates (13) arranged at equal distances from left to right, and the liquid delivery pipe (22) passes through the plurality of supporting convex plates (13) in sequence.

7. The circulating slow-release device for acid mine drainage according to claim 1, characterized in that: The bottom of the V-shaped reaction box (1) is provided with a plurality of brackets (14) arranged at equal distances from left to right.

8. The circulating slow-release device for acid mine drainage according to claim 1, characterized in that: A semicircular avoidance groove (400) is provided at the bottom of the hollow material box (40), and handle grooves (401) are provided on both the left and right sides of the hollow material box (40) and near the top.

9. The circulating slow-release device for acid mine drainage according to claim 1, characterized in that: The top of the hollow material box (40) is sleeved with a box cover (42), and the top of the box cover (42) is provided with a handle (43).

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