Cyanide-containing wastewater decyanation device

Abstract

The invention relates to the technical field of wastewater decyanation, and discloses a cyanogen-containing wastewater decyanation device which comprises a barrel body, a sewage inlet pipe and a liquid outlet pipe which are respectively communicated with the top and the bottom of the barrel body, and an air outlet pipe which is communicated with the top of the barrel body; the detection assembly is arranged on the gas outlet pipe, and the detection assembly is used for detecting the generation rate of gas in the barrel body; and the chemical adding assemblies are arranged in the barrel body and on the top of the barrel body, and the chemical adding assemblies are used for adding an oxidizing agent into the barrel body. When hydrogen peroxide is added into cyanogen-containing waste water for decyanation, nitrogen generated in the barrel body can be detected, cyanide in the waste water becomes less and less along with the decyanation process, the generation rate of the nitrogen becomes slower and slower, and finally, the alarm gives an alarm to prompt workers that decyanation is finished. Therefore, the decyanation process of the cyanogen-containing wastewater can be known, and the use effect of the equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater decyanation, in particular to a device for decyanation of cyanide-containing wastewater. Background Art

[0002] Cyanide wastewater is wastewater that contains cyanide. Cyanide is a highly toxic chemical substance. If cyanide wastewater is discharged directly without treatment, it will cause great harm to the environment. Before discharging cyanide wastewater, the wastewater needs to be decyanated to ensure that the wastewater can meet the corresponding discharge standards. The cyanide wastewater decyanation device is a device specially used to treat wastewater containing cyanide.

[0003] For example, the cyanide-containing wastewater decyanation device disclosed in the patent with announcement number CN216106117U can decyanate the cyanide-containing wastewater, but when hydrogen peroxide is used for decyanation, the decyanation process of the cyanide-containing wastewater is not monitored, resulting in an inability to accurately know when the decyanation of the wastewater is completed, and the mixing efficiency of hydrogen peroxide and cyanide-containing wastewater is low, which reduces the effect of use. Therefore, it is urgent to design a cyanide-containing wastewater decyanation device. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a cyanide removal device for cyanide-containing wastewater.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A cyanide-containing wastewater decyanation device comprises a barrel body, the top and bottom of the barrel body are connected and installed with a sewage inlet pipe and a liquid outlet pipe, respectively, and further comprises: An air outlet pipe is connected and installed on the top of the barrel; A detection component is arranged on the gas outlet pipe and is used to detect the rate at which gas is generated inside the barrel; The dosing component is arranged inside and on the top of the barrel body, and is used to add the oxidant into the barrel body.

[0006] As a further technical solution of the present invention, the detection component includes: a disc, which is arranged on the outside of the air outlet pipe, and a rotating rod is fixedly installed at the center of the side of the disc, the end of the rotating rod away from the disc passes through the side of the air outlet pipe, and the surface of the rotating rod is rotatably installed on the inner wall of the air outlet pipe.

[0007] As a further technical solution of the present invention, an impeller is rotatably arranged inside the exhaust pipe, the corresponding end of the rotating rod is fixedly installed at the center of the side of the impeller, two symmetrically arranged rectangular grooves are opened on the side of the disk away from the rotating rod, and an alarm is installed at the center of the side of the disk away from the rotating rod.

[0008] As a further technical solution of the present invention, a spring rod is fixedly installed on the surface of the disc in a centrally symmetrical manner, a connecting plate is fixedly installed on the telescopic end of the spring rod, an L-shaped rod is slidably installed inside each rectangular groove, and the long side of the L-shaped rod passes through the disc and is fixedly installed on the side of the connecting plate.

[0009] As a further technical solution of the present invention, a rotating shaft is rotatably installed on the short side of the L-shaped rod, a limiting hole is opened on the rotating shaft, and limiting rods are horizontally fixedly installed on the opposite sides of the rectangular groove. When the limiting rod and the limiting hole are in contact, the limiting rod slides between them.

[0010] As a further technical solution of the present invention, a one-way bearing is sleeved on the surface of the rotating shaft, a gear is fixedly sleeved on the outer ring of the one-way bearing, a rack is horizontally fixedly installed on the inner wall of the rectangular groove, and when the rack and the gear are in contact, the rack and the gear are meshed.

[0011] As a further technical solution of the present invention, a fixing plate is fixedly installed at the end of the rotating shaft away from the L-shaped rod, a copper block and an insulating block are fixedly installed at both ends of the fixing plate, a copper bar is fixedly installed on the inner wall of the rectangular groove, and the copper block and the copper bar are electrically connected to the alarm.

[0012] As a further technical solution of the present invention, the dosing component includes: an injection tube, which is vertically rotatably arranged at the bottom of the barrel body, and the top of the injection tube passes through the top of the barrel body, and a liquid inlet pipe is rotatably installed at the bottom of the barrel body, and the top of the liquid inlet pipe is rotatably connected and installed at the bottom of the injection tube.

[0013] As a further technical solution of the present invention, a plurality of evenly distributed horizontal tubes are installed on the surface of the liquid injection tube, each horizontal tube is installed with a one-way valve, and a plurality of nozzles are evenly fixedly connected in a straight line at the bottom of each horizontal tube, a pressure relief valve is installed on the top of the liquid injection tube, a pressure pump is installed on the top of the barrel body, a connecting tube is fixedly installed on the air outlet end of the pressure pump, and the corresponding ends of the connecting tube are rotatably connected and installed at the center of the top of the liquid injection tube.

[0014] As a further technical solution of the present invention, a first pulley is fixedly sleeved on the surface of the injection tube, a second pulley is rotatably installed on the top of the barrel body, belts are sleeved on the surfaces of the first pulley and the second pulley, a drive motor is installed on the top of the barrel body, and the output shaft of the drive motor is installed on the top of the second pulley.

[0015] The beneficial effects of the present invention are: Firstly, the present invention can detect the nitrogen generated inside the barrel body when hydrogen peroxide is added to decyanate the cyanide-containing wastewater through the arrangement of the detection component, the air outlet pipe and the barrel body. As the decyanate progresses, the cyanide in the wastewater will become less and less, so that the nitrogen generation rate will become slower and slower, and finally the alarm will sound an alarm to remind the staff that the decyanate is finished, so as to realize the understanding of the decyanate process of the cyanide-containing wastewater, thereby improving the use effect of the equipment; Secondly, the present invention, through the arrangement of the dosing assembly and the barrel, can make the hydrogen peroxide inside the injection pipe spray evenly into the barrel, thereby ensuring the reaction rate and effect of hydrogen peroxide and cyanide-containing wastewater, thereby improving the use effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a cyanide-containing wastewater decyanation device proposed by the present invention; Figure 2 for Figure 1 A magnified schematic diagram of part A; Figure 3 This is a schematic diagram of the cross-sectional rear view of the barrel of a cyanide-containing wastewater decyanation device proposed by the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of a barrel of a cyanide-containing wastewater decyanation device proposed by the present invention; Figure 5 A schematic diagram of a liquid injection pipe and its connection structure of a cyanide-containing wastewater decyanation device proposed by the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of an outlet pipe of a cyanide-containing wastewater decyanation device proposed by the present invention; Figure 7 This is a schematic diagram of the disc cross-sectional structure of a cyanide-containing wastewater decyanation device proposed by the present invention; Figure 8 This is a schematic structural diagram of a cyanide-containing wastewater decyanation device proposed by the present invention after the rotating shaft and the L-shaped rod are separated.

[0017] In the figure: 1. barrel; 2. liquid injection pipe; 3. pressure pump; 4. connecting pipe; 5. air outlet pipe; 6. liquid inlet pipe; 7. horizontal pipe; 8. nozzle; 9. one-way valve; 10. belt; 11. first pulley; 12. second pulley; 13. driving motor; 14. impeller; 15. rotating rod; 16. disc; 17. rectangular groove; 18. spring rod; 19. connecting plate; 20. L-shaped rod; 21. alarm; 22. rack; 23. gear; 24. rotating shaft; 25. one-way bearing; 26. limit rod; 27. copper bar; 28. fixing plate; 29. ​​insulating block; 30. copper block. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] Please see attached Figure 1 -Attached Figure 8 A cyanide-containing wastewater decyanation device comprises a barrel body 1, wherein the top and bottom of the barrel body 1 are connected and respectively installed with a sewage inlet pipe and a liquid outlet pipe, and further comprises: an air outlet pipe 5, a detection component and a dosing component, wherein the air outlet pipe 5 is connected and installed on the top of the barrel body 1, the detection component is arranged on the air outlet pipe 5, the detection component is used to detect the rate of gas generation inside the barrel body 1, the dosing component is arranged inside and on the top of the barrel body 1, and the dosing component is used to add an oxidant into the barrel body 1; As described above, when hydrogen peroxide is added to decyanate the cyanide-containing wastewater, the nitrogen generated inside the barrel 1 can be detected. As the decyanate progresses, the cyanide in the wastewater will become less and less, making the nitrogen generation rate slower and slower, and finally the alarm 21 will sound an alarm to remind the staff that the decyanate is finished.

[0021] Please see attached Figure 1 -Attached Figure 8In a preferred embodiment, the detection component includes: a disc 16, the disc 16 is arranged on the outside of the air outlet pipe 5, a rotating rod 15 is fixedly installed at the center of the side of the disc 16, the end of the rotating rod 15 away from the disc 16 passes through the side of the air outlet pipe 5, and the surface of the rotating rod 15 is rotatably installed in the inner wall of the air outlet pipe 5, an impeller 14 is rotatably arranged inside the air outlet pipe 5, the corresponding end of the rotating rod 15 is fixedly installed at the center of the side of the impeller 14, two symmetrically arranged rectangular grooves 17 are opened on the side of the disc 16 away from the rotating rod 15, and an alarm 21 is installed at the center of the side of the disc 16 away from the rotating rod 15, a spring rod 18 symmetrically arranged at the center is fixedly installed on the surface of the disc 16, a connecting plate 19 is fixedly installed at the telescopic end of the spring rod 18, an L-shaped rod 20 is slidably arranged inside each rectangular groove 17, and the long side of the L-shaped rod 20 The disc 16 is passed through and fixedly installed on the side of the connecting plate 19. A rotating shaft 24 is rotatably installed on the short side of the L-shaped rod 20. A limiting hole is provided on the rotating shaft 24. Limiting rods 26 are fixedly installed horizontally on both opposite sides of the rectangular groove 17. When the limiting rod 26 contacts the limiting hole, the limiting rod 26 slides between the limiting hole. A one-way bearing 25 is sleeved on the surface of the rotating shaft 24. A gear 23 is fixedly sleeved on the outer ring of the one-way bearing 25. A rack 22 is fixedly installed horizontally on the inner wall of the rectangular groove 17. When the rack 22 contacts the gear 23, the rack 22 and the gear 23 are meshed. A fixing plate 28 is fixedly installed on the end of the rotating shaft 24 away from the L-shaped rod 20. A copper block 30 and an insulating block 29 are fixedly installed on both ends of the fixing plate 28. A copper bar 27 is fixedly installed on the inner wall of the rectangular groove 17. Both the copper block 30 and the copper bar 27 are electrically connected to the alarm 21. Preferably, the positions of the insulating block 29 and the copper block 30 are changed. Finally, when the gear 23 and the rack 22 are engaged, the corresponding limit rod 26 enters the limit hole on the rotating shaft 24, and then the copper block 30 contacts the copper bar 27 and activates the alarm 21, prompting the staff that the decyanation of the cyanide-containing wastewater is completed.

[0022] Please see attached Figure 1 -Attached Figure 6In a preferred embodiment, the dosing component includes: an injection pipe 2, the injection pipe 2 is vertically rotatably arranged at the bottom of the barrel body 1, and the top of the injection pipe 2 passes through the top of the barrel body 1, a liquid inlet pipe 6 is rotatably installed at the bottom of the barrel body 1, and the top of the liquid inlet pipe 6 is rotatably connected and installed at the bottom of the injection pipe 2, and a plurality of evenly distributed transverse pipes 7 are connected and installed on the surface of the injection pipe 2, each transverse pipe 7 is installed with a one-way valve 9, and the bottom of each transverse pipe 7 is evenly fixed and connected with a plurality of nozzles 8 in a straight line, a pressure relief valve is installed on the top of the injection pipe 2, a pressure pump 3 is installed on the top of the barrel body 1, and a connecting pipe 4 is fixedly installed on the air outlet end of the pressure pump 3, and the corresponding end of the connecting pipe 4 is rotatably connected and installed at the center of the top of the injection pipe 2, a first pulley 11 is fixedly sleeved on the surface of the injection pipe 2, a second pulley 12 is rotatably installed on the top of the barrel body 1, and a belt 10 is sleeved on the surface of the first pulley 11 and the second pulley 12, a driving motor 13 is installed on the top of the barrel body 1, and the output shaft of the driving motor 13 is installed on the top of the second pulley 12; Specifically, the hydrogen peroxide in the injection pipe 2 can be evenly sprayed into the barrel body 1, thereby ensuring the reaction rate and effect of the hydrogen peroxide and the cyanide-containing wastewater.

[0023] The working principle of the present invention is as follows: firstly, the cyanide-containing wastewater enters the barrel body 1 through the sewage inlet pipe, and then the hydrogen peroxide is added into the injection pipe 2 through the liquid inlet pipe 6; Then, the booster pump 3 and the drive motor 13 are started. The booster pump 3 works to inject gas into the injection pipe 2, so that high pressure is generated inside the injection pipe 2. The one-way valve 9 is further opened, and the hydrogen peroxide inside the injection pipe 2 is sprayed out through the transverse pipe 7 and the nozzle 8 to mix with the cyanide-containing wastewater. In addition, the drive motor 13 works to drive the second pulley 12 to rotate, and the rotation of the second pulley 12 drives the belt 10 to rotate, and the rotation of the belt 10 drives the injection pipe 2 to rotate, and the rotation of the injection pipe 2 drives the transverse pipe 7 and the nozzle 8 to rotate, so as to achieve uniform spraying of hydrogen peroxide inside the barrel 1 while stirring and mixing the cyanide-containing wastewater and hydrogen peroxide; When cyanide-containing wastewater and hydrogen peroxide are mixed, hydrogen peroxide will react with cyanide in the cyanide-containing wastewater to generate nitrogen and water. Since hydrogen peroxide is evenly distributed in the cyanide-containing wastewater, the reaction rate is accelerated, and the nitrogen generation rate is accelerated. The nitrogen inside the barrel 1 will be discharged from the outlet pipe 5 and drive the impeller 14 to rotate. The rotation of the impeller 14 drives the rotating rod 15 to rotate. The rotation of the rotating rod 15 drives the disc 16 to rotate. The rotation of the disc 16 drives the spring rod 18 and its connecting parts to revolve around the rotating rod 15 as the center of the circle. The centrifugal force generated when the spring rod 18 rotates will cause the connecting plate 19 to move away from the rotating rod 15. The disc 16 moves in the direction of the connecting plate 19, the L-shaped rod 20 moves, the L-shaped rod 20 moves, the rotating shaft 24 moves, the rotating shaft 24 moves, the one-way bearing 25 and the gear 23 move, when the rotating shaft 24 and the corresponding limiting rod 26 are separated, the gear 23 and the rack 22 are meshed, and the gear 23 rotates when it moves horizontally. At this time, due to the setting of the one-way bearing 25, the rotation of the gear 23 will not drive the rotating shaft 24 to rotate through the one-way bearing 25. When the gear 23 and the rack 22 are separated, the corresponding limiting rod 26 will be inserted into the limiting hole on the rotating shaft 24; As the reaction of cyanide-containing wastewater and hydrogen peroxide progresses, the cyanide in the wastewater will become less and less, and the nitrogen generated by the reaction of cyanide-containing wastewater and hydrogen peroxide will become less and less, so that the rotation rate of the disc 16 becomes lower and lower, and the centrifugal force generated by the spring rod 18 becomes smaller and smaller, so as to realize the connection plate 19 to move closer to the disc 16. In summary, the movement of the connection plate 19 will cause the L-shaped rod 20 to move, and the movement of the L-shaped rod 20 will drive the rotation shaft 24 and its connecting parts to move. When the rotation shaft 24 and the corresponding limit rod 26 are separated, the gear 23 and The rack 22 meshes and causes the gear 23 to rotate. At this time, the rotation of the gear 23 drives the rotating shaft 24 to rotate through the one-way bearing 25. The rotating shaft 24 rotates the fixed plate 28 to rotate. The fixed plate 28 rotates and drives the insulating block 29 and the copper block 30 to rotate, so as to change the positions of the insulating block 29 and the copper block 30. Finally, when the meshing of the gear 23 and the rack 22 is completed, the corresponding limit rod 26 enters the limit hole on the rotating shaft 24, and then the copper block 30 contacts the copper bar 27 and causes the alarm 21 to work, prompting the staff that the decyanation of the cyanide-containing wastewater is completed; Finally, the water inside the barrel body 1 can be discharged through the liquid outlet pipe. It should be noted that when the staff discharges the water inside the barrel body 1, they need to pull the two connecting plates 19 first. In summary, the insulating block and the copper block 30 can be swapped, and the insulating block 29 and the copper bar 27 can be brought into contact to release the alarm state of the alarm 21. In summary, the above reciprocating operation can continuously decyanate the cyanide-containing wastewater, thereby improving the use effect of the equipment.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cyanide-containing wastewater decyanation device, comprising a barrel (1), wherein the top and bottom of the barrel (1) are connected and respectively provided with a sewage inlet pipe and a liquid outlet pipe, characterized in that: Also includes: An air outlet pipe (5), the air outlet pipe (5) being connected and installed on the top of the barrel body (1); A detection component, the detection component being arranged on the gas outlet pipe (5), and being used to detect the rate at which gas is generated inside the barrel body (1); A dosing component is arranged inside and on the top of the barrel (1), and is used to add an oxidant into the barrel (1).

2. A cyanide-containing wastewater decyanation device according to claim 1, characterized in that: The detection assembly comprises: a disc (16), the disc (16) being arranged outside the air outlet pipe (5), a rotating rod (15) being fixedly mounted at the center of the side surface of the disc (16), the end of the rotating rod (15) away from the disc (16) passing through the side surface of the air outlet pipe (5), and the surface of the rotating rod (15) being rotatably mounted within the inner wall of the air outlet pipe (5).

3. A cyanide-containing wastewater decyanation device according to claim 2, characterized in that: An impeller (14) is rotatably arranged inside the air outlet pipe (5), and the corresponding end of the rotating rod (15) is fixedly mounted at the center of the side of the impeller (14). The side of the disc (16) away from the rotating rod (15) is provided with two symmetrically arranged rectangular grooves (17), and an alarm (21) is mounted at the center of the side of the disc (16) away from the rotating rod (15).

4. A cyanide-containing wastewater decyanation device according to claim 3, characterized in that: A spring rod (18) is fixedly mounted on the surface of the circular disk (16) and is symmetrically arranged at the center. A connecting plate (19) is fixedly mounted on the telescopic end of the spring rod (18). An L-shaped rod (20) is slidably arranged inside each of the rectangular grooves (17). The long side of the L-shaped rod (20) passes through the circular disk (16) and is fixedly mounted on the side of the connecting plate (19).

5. A cyanide-containing wastewater decyanation device according to claim 4, characterized in that: A rotating shaft (24) is rotatably mounted on the short side of the L-shaped rod (20), a limiting hole is provided on the rotating shaft (24), and limiting rods (26) are horizontally fixedly mounted on opposite sides of the rectangular groove (17), and when the limiting rod (26) and the limiting hole are in contact, the limiting rod (26) and the limiting hole slide therebetween.

6. A cyanide-containing wastewater decyanation device according to claim 5, characterized in that: A one-way bearing (25) is sleeved on the surface of the rotating shaft (24), a gear (23) is fixedly sleeved on the outer ring of the one-way bearing (25), and a rack (22) is fixedly installed horizontally on the inner wall of the rectangular groove (17), and when the rack (22) and the gear (23) are in contact, the rack (22) and the gear (23) are meshed.

7. A cyanide-containing wastewater decyanation device according to claim 6, characterized in that: A fixing plate (28) is fixedly mounted on the end of the rotating shaft (24) away from the L-shaped rod (20), a copper block (30) and an insulating block (29) are fixedly mounted on both ends of the fixing plate (28), a copper bar (27) is fixedly mounted on the inner wall of the rectangular groove (17), and both the copper block (30) and the copper bar (27) are electrically connected to the alarm (21).

8. A cyanide-containing wastewater decyanation device according to claim 7, characterized in that: The dosing assembly comprises: an injection pipe (2), the injection pipe (2) being vertically rotatably arranged at the bottom of the barrel body (1), and the top end of the injection pipe (2) passing through the top of the barrel body (1), a liquid inlet pipe (6) being rotatably installed at the bottom of the barrel body (1), and the top end of the liquid inlet pipe (6) being rotatably connected and installed at the bottom of the injection pipe (2).

9. A cyanide-containing wastewater decyanation device according to claim 8, characterized in that: The surface of the injection pipe (2) is connected to and installed with a plurality of evenly distributed transverse pipes (7), each of which is installed with a one-way valve (9), and the bottom of each transverse pipe (7) is evenly and fixedly connected to a plurality of nozzles (8) in a straight line, a pressure relief valve is installed on the top of the injection pipe (2), a booster pump (3) is installed on the top of the barrel (1), a connecting pipe (4) is fixedly installed on the air outlet end of the booster pump (3), and the corresponding end of the connecting pipe (4) is rotatably connected and installed at the center of the top of the injection pipe (2).

10. A cyanide-containing wastewater decyanation device according to claim 9, characterized in that: A first pulley (11) is fixedly sleeved on the surface of the liquid injection pipe (2), a second pulley (12) is rotatably mounted on the top of the barrel body (1), belts (10) are sleeved on the surfaces of the first pulley (11) and the second pulley (12), a drive motor (13) is mounted on the top of the barrel body (1), and an output shaft of the drive motor (13) is mounted on the top of the second pulley (12).

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