Device for cooperatively treating mine acid wastewater by using alkaline residues

Abstract

The invention provides a device for cooperatively treating mine acid wastewater by using alkaline residues, and relates to the technical field of mine acid wastewater treatment. A cover plate is arranged in the middle of the top of the reaction kettle, a mounting plate is hermetically arranged at the lower position in the reaction kettle, and a mixing motor is fixedly connected to the middle of the bottom of the mounting plate. The mixing motor drives the mixing shaft, the fixed plate and the movable plate to rotate, efficient mixing of acid wastewater and alkaline residues is achieved, the design of the movable plate enables the rotation amplitude between the movable plate and the fixed plate to be adjusted in a self-adaptive mode in the mixing process, the mixing effect is guaranteed, collision with precipitates is avoided, and the service life of the acid wastewater and the alkaline residues is prolonged. The device is protected; and the treatment efficiency is improved. The problems that when stirring and mixing are continued after the precipitate stroke, caked precipitates are prone to touching stirring fan blades, the precipitates are scattered, and meanwhile the stirring fan blades are damaged by the scattering acting force are solved.

Description

Technical Field

[0001] The invention relates to the technical field of acid mine wastewater treatment, and in particular to a device for collaboratively treating acid mine wastewater by utilizing alkali slag. Background Art

[0002] The acidic wastewater generated during mining contains a large amount of heavy metal ions and acidic substances, which poses a serious threat to the environment and ecosystem. Traditional treatment methods mostly use alkaline substances such as lime for neutralization, but the cost is high and it is easy to produce a large amount of low-density sludge, which is difficult to treat. Therefore, it is particularly important to develop a new technology that can efficiently utilize alkaline slag waste to synergistically treat acidic mine wastewater.

[0003] Application No. CN202021448588.4 discloses a system for the synergistic treatment of acidic mining wastewater and alkaline mineral processing wastewater in mines, the system comprising a pre-neutralization unit, a synergistic reaction unit, a flocculation unit and a precipitation unit; the utility model improves the utilization rate of lime, reduces the amount of lime added, increases the density of the neutralized precipitate, reduces the sludge volume, and effectively reduces the adhesion of alkali and precipitate to the overall equipment pipeline, thereby slowing down the scaling and corrosion of the equipment.

[0004] Based on the search of the above patents and the understanding of the existing application of alkali slag in the coordinated treatment of acid mine wastewater: At present, when the alkali slag reacts with the acidic wastewater, the alkaline components in the alkali slag are promoted to undergo complex chemical reactions with the acidic substances and heavy metal ions in the acidic wastewater to form a stable precipitate. While continuing to stir and mix after the precipitate has traveled, the agglomerated precipitate is easy to touch the stirring blades, causing the precipitate to break up. At the same time, the breaking force will cause damage to the stirring blades.

[0005] Therefore, in view of this, the existing structure and defects are studied and improved, and a device for co-treating acid mine wastewater using alkali slag is provided, in order to achieve a more practical purpose. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a device for co-treating acid mine wastewater using alkali slag, so as to solve the problem that after the alkaline components in the alkali slag react with the acidic substances and heavy metal ions in the acidic wastewater to form a stable precipitate, while the precipitate continues to be stirred and mixed after the precipitate travels, the agglomerated precipitate is easy to touch the stirring blades, causing the precipitate to be broken up, and the breaking force will cause damage to the stirring blades.

[0007] The present invention provides a device for collaboratively treating acid mine wastewater by utilizing alkali slag, specifically comprising: a reactor; a cover plate is arranged at the middle position on the top of the reactor, a mounting plate is sealedly arranged at the lower position inside the reactor, a mixing motor is fixedly connected at the middle position on the bottom of the mounting plate, the mixing motor is located at the middle position on the lower position inside the reactor, a mixing shaft is fixedly connected at the position above the rotating shaft of the mixing motor, the mixing shaft is located through the middle position of the mounting plate, a fixed plate is symmetrically fixedly connected at both sides of the mixing shaft, a movable plate is unidirectionally rotated at the bottom position of each fixed plate, two wall plates are fixedly connected at the side positions of each fixed plate, a spring component is arranged inside each wall plate, both sides of the movable plate rotating at the bottom of each fixed plate are connected to a spring component, and two transverse plates are arranged at the side positions of each movable plate.

[0008] Furthermore, a water inlet valve is arranged above the rear end of the reactor, and a water outlet valve is arranged below the rear end of the reactor, and the water outlet valve is located below the water inlet valve.

[0009] Furthermore, when the fixed plate and the movable plate are in a stationary state, the movable plate fits against the wall plate, the spring member is in a normal contracted state, a cross is fixedly installed at the middle lower position of the reactor, and the top position of the mixing shaft is rotatably connected to the middle position of the cross.

[0010] Furthermore, a mesh plate is provided at the upper middle position inside the reactor, and the mesh plate is located above the cross.

[0011] Furthermore, a pump pipe is provided at the upper inner portion of the cover plate, the pump pipe is provided with a water pump, and the lower front end of the pump pipe is located above the collecting tank, and the collecting tank is located at the front end of the reactor.

[0012] Furthermore, an addition port is provided at the middle right position of the top of the cover plate, a retractable L-tube is rotatably connected to the lower inner position of the rear end of the pump tube, a side groove is opened at the lower inner position of the L-tube, and a screw conveyor is provided at the inner position of the L-tube.

[0013] Furthermore, a threaded hole is opened in the middle rear position of the cover plate, and an adjusting bolt is rotatably connected in the threaded hole of the cover plate. The bottom position of the adjusting bolt is rotatably connected to the top rear end position of the gear disc, and the middle position of the L tube is fixed to the middle position of the gear disc.

[0014] Furthermore, the toothed disc is located in the middle of the upper part of the reactor, and the peripheral surface of the toothed disc is slidably connected to a sliding frame, a surrounding motor is fixedly installed on the top of the sliding frame, and a gear is provided on the bottom rotating shaft of the surrounding motor, and the gear is meshed with the toothed disc for transmission.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The mixing motor drives the mixing shaft and the fixed plate and movable plate to rotate, thus achieving efficient mixing of acidic wastewater and alkali slag. The design of the movable plate enables the movable plate to adaptively adjust the rotation amplitude with the fixed plate during the mixing process, which not only ensures the mixing effect, but also avoids collision with sediment, protects the device and improves the processing efficiency.

[0016] 2. The spring in the device can automatically adjust the position of the movable plate according to the rotation speed of the mixing shaft, ensuring that after the mixing stops, the movable plate can be reset and the sediment can be swept in a circular manner, thereby improving the collection efficiency of the sediment.

[0017] 3. Through the design of the adjustment bolt and the toothed disc, the height and position of the L-tube can be flexibly adjusted. In conjunction with the screw conveyor, the floating objects inside the reactor can be effectively collected and transferred, further improving the thoroughness and efficiency of wastewater treatment.

[0018] 4. The start of the surround motor enables the L-tube to rotate and adjust at the lower rear end of the pump tube. Together with the screw conveyor, it realizes the surround collection of floating objects, ensuring the uniformity and comprehensiveness of the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0020] In the attached picture: Figure 1 A schematic diagram of the top view of the structure of a device for collaboratively treating acid mine wastewater using alkali slag according to an embodiment of the present invention is shown; Figure 2 The left side structural schematic diagram of the device for co-treating acid mine wastewater by using alkali slag according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the side structure of a device for co-treating acid mine wastewater using alkali slag according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of a half-section left view of the structure of a device for co-treating acid mine wastewater using alkali slag according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of a half-section side view of the structure of a device for collaboratively treating acid mine wastewater using alkali slag according to an embodiment of the present invention is shown; Figure 6 A schematic diagram of the side view structure of some parts in a reactor according to an embodiment of the present invention is shown; Figure 7 The embodiment according to the present invention is shown Figure 6 A schematic diagram of the partially enlarged structure at center A; Figure 8 A schematic diagram of the side view structure of the overall parts of the cover plate according to an embodiment of the present invention is shown.

[0021] Reference numerals list 1. Reactor; 101. Inlet valve; 102. Outlet valve; 103. Mounting plate; 104. Mixing motor; 105. Mixing shaft; 106. Cross; 107. Fixed plate; 108. Movable plate; 109. Wall plate; 110. Spring member; 2. Cover plate; 201. Pump pipe; 202. Adjusting bolt; 203. Toothed disc; 204. L-tube; 205. Screw conveyor; 206. Sliding frame; 207. Surrounding motor; 208. Gear; 3. Collecting tank; 4. Net plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0023] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present disclosure have the same meanings as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined in this manner in the embodiments of the present disclosure.

[0024] The "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "One", "one" or "the" and similar words do not indicate a quantity limitation, but indicate that there is at least one. Similarly, "including" or "comprising" and similar words mean that the element or object appearing in front of the word covers the elements or objects listed after the word and their equivalents, without excluding other elements or objects. In the following description, spatial and directional terms such as "upper", "lower", "front", "back", "top", "bottom", "vertical" and "horizontal" may be used to describe the embodiments of the present disclosure, but it should be understood that these terms are only for the convenience of describing the embodiments shown in the figures, and do not require the actual device to be constructed or operated in a specific orientation. In the following description, the use of terms such as "connect", "connect", "fix" and "attach" may refer to two elements or structures being directly connected without other elements or structures between them, or may refer to two elements or structures being indirectly connected through an intermediate element or structure, unless otherwise clearly stated in this article. Example

[0025] As attached Figure 1 To Attachment Figure 8 As shown: The present invention provides a device for co-treating acid mine wastewater by using alkali slag, comprising: a reactor 1; a cover plate 2 is arranged at the middle position of the top of the reactor 1; a mounting plate 103 is sealedly arranged at the lower position of the reactor 1; a mixing motor 104 is fixedly connected to the middle position of the bottom of the mounting plate 103; the mixing motor 104 is located at the middle position of the lower position of the reactor 1; a mixing shaft 105 is fixedly connected to the upper position of the rotating shaft of the mixing motor 104; the mixing shaft 105 is located through the middle position of the mounting plate 103; a fixed plate 107 is symmetrically fixedly connected to both sides of the mixing shaft 105; a movable plate 108 is unidirectionally rotated at the bottom position of each fixed plate 107; two wall plates 109 are fixedly connected to the side positions of each fixed plate 107; a spring member 110 is arranged inside each wall plate 109; both sides of the movable plate 108 rotating at the bottom of each fixed plate 107 are connected to a spring member 110; and two transverse plates are arranged at the side positions of each movable plate 108.

[0026] A water inlet valve 101 is disposed at an upper position of the rear end of the reactor 1 , and a water outlet valve 102 is disposed at a lower position of the rear end of the reactor 1 . The water outlet valve 102 is located below the water inlet valve 101 .

[0027] Among them, when the fixed plate 107 and the movable plate 108 are in a stationary state, the movable plate 108 is in contact with the wall plate 109, the spring member 110 is in a normal contracted state, a cross 106 is fixedly installed at the middle lower position of the reactor 1, and the top position of the mixing shaft 105 is rotatably connected to the middle position of the cross 106.

[0028] Among them, a mesh plate 4 is provided at the upper middle position inside the reactor 1, and the mesh plate 4 is located above the cross 106. The structural design of the mesh plate 4 prevents wastewater from entering the upper position inside the reactor 1 during the mixing process inside the reactor 1, causing shaking due to the inertia of the wastewater, thereby reducing the force inside the reactor 1.

[0029] A pump tube 201 is provided at the upper inner portion of the cover plate 2 , and a water pump is provided at the pump tube 201 . The lower front end of the pump tube 201 is located above the collecting tank 3 , and the collecting tank 3 is located at the front end of the reactor 1 .

[0030] Among them, an addition port is set at the middle right position of the top of the cover plate 2, a retractable L-tube 204 is rotatably connected to the lower inner position of the rear end of the pump tube 201, a side groove is opened at the lower inner position of the L-tube 204, and a screw conveyor 205 is set at the inner position of the L-tube 204, a threaded hole is opened at the middle rear position of the cover plate 2, and an adjusting bolt 202 is rotatably connected in the threaded hole of the cover plate 2, the bottom position of the adjusting bolt 202 is rotatably connected to the top rear end position of the toothed disc 203, and the middle position of the L-tube 204 is fixed at the middle position of the toothed disc 203.

[0031] Among them, the toothed disc 203 is located in the upper middle position inside the reactor 1, and the peripheral position of the toothed disc 203 is slidably connected to the sliding frame 206, and the top position of the sliding frame 206 is fixedly installed with a surrounding motor 207. The bottom rotating shaft of the surrounding motor 207 is provided with a gear 208, and the gear 208 is meshed with the toothed disc 203 for transmission.

[0032] When using: Acidic mine wastewater is added through the water inlet valve 101 at the rear end of the reactor 1, and an appropriate amount of acidic mine wastewater is added to the inside of the reactor 1. Then, alkali residue and flocculant are added through the addition port on the cover plate 2. The alkali residue enters the reactor 1 to react with the acidic wastewater, promoting the aggregation and sedimentation of precipitates, improving sedimentation efficiency, and reducing sludge volume.

[0033] During the reaction of the acidic wastewater and the alkali residue, the mixing motor 104 is started to rotate its own shaft clockwise, and the shaft of the mixing motor 104 drives the mixing shaft 105 to rotate clockwise. At this time, the fixed plates 107 designed on both sides of the mixing shaft 105 rotate inside the reactor 1, and the acidic wastewater and the alkali residue inside the reactor 1 are fully mixed; When the two fixed plates 107 are pulled and rotated by the mixing shaft 105, the two movable plates 108 generate resistance by contacting with the mixed water according to the clockwise rotation of the fixed plate 107, so that the movable plate 108 rotates below the fixed plate 107, and the transverse plate of the movable plate 108 changes direction to speed up the mixing of the mixture inside the reactor 1. The movable plate 108 adaptively adjusts the rotation amplitude between itself and the fixed plate 107 according to the rotation speed of the mixing shaft 105 to avoid the movable plate 108 colliding with the sediment formed at the bottom of the reactor 1 during the mixing process, breaking up the sediment or even damaging itself.

[0034] After a stable precipitate is formed inside the reactor 1, the mixing motor 104 is stopped, and the speed of the mixing shaft 105 is reduced and will not drive the two fixed plates 107 to continue to rotate rapidly. At this time, the spring member 110 contracts and resets, driving the movable plate 108 to fit with the wall plate 109, so that the movable plate 108 is reset to the position below the fixed plate 107. While the movable plate 108 is reset by the unpowered inertia of the mixing shaft 105, the precipitate above the mounting plate 103 is swept and concentrated in a circular manner.

[0035] After stable sediment is formed inside the reactor 1, floating objects will be present at the upper position inside the reactor 1. The adjusting bolt 202 is rotated, and the adjusting bolt 202 cooperates with the threaded hole of the cover plate 2 to drive the position of the toothed disc 203 to change. The L tube 204 completes sliding and lifting at the lower position of the rear end of the pump tube 201. The L tube 204 is adjusted to the floating object position, and the screw conveyor 205 is started. The screw conveyor 205 transfers the floating objects to the inside of the L tube 204, and then the pump tube 201 transfers the floating objects to the collection tank 3 for collection. In addition, after the surround motor 207 is started, the gear 208 engages with the toothed disc 203 so that the sliding frame 206 rotates around the outer circumference of the toothed disc 203, and the L-tube 204 is rotated and adjusted at the lower position of the rear end of the pump tube 201. During the rotation of the L-tube 204, the position of the screw conveyor 205 is adjusted, thereby achieving a surround collection effect on the floating objects inside the reactor 1.

[0036] The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure shall be based on the protection scope of the claims.

Claims

1. A device for co-treating acid mine wastewater using alkali residue, characterized in that: include: A reactor (1); a cover plate (2) is arranged at the middle position of the top of the reactor (1); a mounting plate (103) is sealedly arranged at the lower position of the interior of the reactor (1); a mixing motor (104) is fixedly connected to the middle position of the bottom of the mounting plate (103); the mixing motor (104) is located at the middle position of the lower position of the interior of the reactor (1); a mixing shaft (105) is fixedly connected to the upper position of the rotating shaft of the mixing motor (104); the mixing shaft (105) is located through the middle position of the mounting plate (103); the mixing shaft (105) ) are symmetrically fixedly connected to both sides of a fixed plate (107); a movable plate (108) is unidirectionally rotatable at the bottom of each fixed plate (107); two wall plates (109) are fixedly connected to the side of each fixed plate (107); a spring member (110) is disposed inside each wall plate (109); both sides of the movable plate (108) rotatable at the bottom of each fixed plate (107) are connected to a spring member (110); and two transverse plates are disposed on the side of each movable plate (108).

2. The device for co-treating acid mine wastewater using alkali residue as claimed in claim 1, characterized in that: A water inlet valve (101) is provided at an upper position of the rear end of the reactor (1), and a water outlet valve (102) is provided at a lower position of the rear end of the reactor (1), wherein the water outlet valve (102) is located below the water inlet valve (101).

3. The device for co-treating acid mine wastewater using alkali residue as claimed in claim 1, characterized in that: When the fixed plate (107) and the movable plate (108) are in a stationary state, the movable plate (108) is in contact with the wall plate (109), the spring member (110) is in a normally contracted state, a cross (106) is fixedly installed at a lower middle position of the reaction kettle (1), and the top position of the mixing shaft (105) is rotatably connected to a middle position of the cross (106).

4. The device for co-treating acid mine wastewater using alkali residue as claimed in claim 1, characterized in that: A mesh plate (4) is provided at an upper middle position inside the reaction kettle (1), and the mesh plate (4) is located above the cross (106).

5. The device for co-treating acid mine wastewater using alkali residue as claimed in claim 1, characterized in that: A pump pipe (201) is arranged at an upper position inside the cover plate (2), the pump pipe (201) is provided with a water pump, and a lower position at the front end of the pump pipe (201) is located above a collecting tank (3), and the collecting tank (3) is located at a front end position of the reaction kettle (1).

6. The device for co-treating acid mine wastewater using alkali residue as claimed in claim 5, characterized in that: A feeding port is provided at the middle right position of the top of the cover plate (2); a retractable L-tube (204) is rotatably connected to the lower position of the rear end of the pump tube (201); a side groove is provided at the lower position of the L-tube (204); and a screw conveyor (205) is provided at the inner position of the L-tube (204).

7. The device for co-treating acid mine wastewater using alkali residue as claimed in claim 6, characterized in that: A threaded hole is provided at the middle rear position of the cover plate (2), and an adjusting bolt (202) is rotatably connected in the threaded hole of the cover plate (2), the bottom position of the adjusting bolt (202) is rotatably connected to the top rear end position of the toothed disc (203), and the middle position of the L tube (204) is fixed to the middle position of the toothed disc (203).

8. The device for co-treating acid mine wastewater using alkali residue as claimed in claim 7, characterized in that: The toothed disc (203) is located at the middle position of the upper part of the reaction kettle (1); a sliding frame (206) is slidably connected to the peripheral surface of the toothed disc (203); a surrounding motor (207) is fixedly installed at the top of the sliding frame (206); a gear (208) is provided on the bottom rotating shaft of the surrounding motor (207); and the gear (208) is meshed with the toothed disc (203) for transmission.

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