Arsenic-containing wastewater treatment device

Abstract

The utility model discloses an arsenic-containing wastewater treatment device, which belongs to the technical field of wastewater treatment and comprises a threaded sleeve, an outer cylinder, an exhaust pipe and a water dispersing pipe, the threaded sleeve vertically penetrates and is fixed at the center of the top of a treatment tank, and an external thread is arranged at the corresponding position of the outer cylinder. The outer barrel is in threaded connection with the interior of the threaded sleeve through the external threads, and the lead angle of the external threads and the threaded sleeve is larger than the friction angle of the external threads and the threaded sleeve. Through the matching design of the sleeve, the packing, the water inlet channel and the water dispersing pipe, arsenic-containing wastewater enters the inner cavity of the sleeve, enters the water dispersing pipe through the water inlet channel and is discharged from the water discharging pipe to enter sludge, so that the arsenic-containing wastewater is in contact with the sludge and is purified, and meanwhile, the arsenic-containing wastewater is purified under the driving of the outer barrel body which is lifted and rotated. The movable area of the water dispersing pipe is larger, the water dispersing pipe can serve as a stirring rod for lifting and rotating motion, arsenic-containing waste water is dispersed and discharged into sludge, and the purification efficiency of the sludge on the arsenic-containing waste water is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a device for treating arsenic-containing wastewater. Background Art

[0002] With the development of industries such as metallurgy and chemical industry and the exploitation of lean mines, arsenic has been developed along with major elements. The amount of arsenic entering the wastewater is quite large, which generally also contains other heavy metal ions. The combined effect of arsenic and lead can make the wastewater more toxic. Arsenic poisoning incidents in wastewater have been found both at home and abroad. In order to treat arsenic-containing wastewater in large quantities, factories use the activated sludge method to purify the wastewater.

[0003] A Chinese utility model with publication number CN217868297U discloses an activated sludge wastewater treatment device, which inserts a water spray pipe into the sludge so that the sewage directly enters the sludge. A first motor drives the water pipe to rotate, so that the water spray pipe stirs the sludge and the sewage and sludge are fully mixed. The device inserts an air outlet pipe into the sludge and a second motor drives the air pipe to rotate so that oxygen can fully contact the sludge.

[0004] The stirring area of ​​the stirring rod of the device is relatively fixed, and its stirring range has certain limitations. The sludge close to the stirring area gradually becomes saturated with adsorption after coming into contact with arsenic-containing wastewater, resulting in reduced adsorption effect. The sludge far away from the stirring area is difficult to come into contact with arsenic-containing wastewater well, causing resources to be stranded, resulting in the need to improve its purification efficiency for arsenic-containing wastewater. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide an arsenic-containing wastewater treatment device, which effectively solves the problem that the stirring area of ​​the stirring rod of the existing wastewater treatment device is relatively fixed and its stirring range has certain limitations. The sludge far away from the stirring area is difficult to contact with the arsenic-containing wastewater well, resulting in resource shelving and the purification efficiency of arsenic-containing wastewater needs to be improved.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an arsenic-containing wastewater treatment device, including a threaded sleeve, an outer cylinder, an exhaust pipe and a water dispersion pipe;

[0007] The threaded sleeve passes through from top to bottom and is fixed at the center position of the top of the treatment tank;

[0008] The outer cylinder is provided with an external thread at a corresponding position, and the outer cylinder is connected to the inside of the threaded sleeve through the external thread. The thread lead angle of the external thread and the threaded sleeve is greater than the friction angle, which can release the self-locking between the threads. By pressing and pulling the outer cylinder, the outer cylinder can be lifted and rotated under the limit of the threaded sleeve.

[0009] The outer surface of the outer cylinder is rotatably connected with a linkage frame, an electric push rod is fixed on the processing tank, and the telescopic end of the electric push rod is fixedly connected to the linkage frame;

[0010] The exhaust pipe is fixed to the bottom of the outer cylinder, an inner cylinder arranged concentrically therewith is fixed inside the outer cylinder, a water inlet channel is formed between the outer cylinder and the inner cylinder, the bottom of the inner cylinder is connected to the exhaust pipe, a rotary joint is fixed on the linkage frame, and the fixed end of the rotary joint is connected to the output end of the external air pump, and the rotating end of the rotary joint is connected to the top of the inner cylinder;

[0011] The water dispersion pipe is fixed to the outer surface of the outer cylinder and connected to the water inlet channel. A sleeve is fixed on the linkage frame. The two ends of the sleeve are respectively rotatably sealed with the outer cylinder and the inner cylinder through packing. The inner cavity of the sleeve is connected to the wastewater pipe. Arsenic-containing wastewater enters the inner cavity of the sleeve and enters the water dispersion pipe through the water inlet channel.

[0012] Furthermore, the outer surface of the exhaust pipe is provided with air outlet holes arranged at equal distances.

[0013] Furthermore, the inner cavity of the water diffusing pipe is fixedly connected to drainage pipes arranged at equal distances.

[0014] Furthermore, a rotating seat is fixedly sleeved on the outer surface of the outer cylinder, a positioning hole for accommodating the rotating seat is opened in the middle of the linkage frame, and a bearing is installed between the rotating seat and the positioning hole.

[0015] Furthermore, the top of the processing tank is fixedly connected with an inlet and outlet pipe, a through hole is opened on the linkage frame, and the top end of the inlet and outlet pipe passes through the through hole and extends to the top of the linkage frame.

[0016] Furthermore, the inner bottom wall of the treatment tank is funnel-shaped, and a sewage discharge pipe is fixedly connected to the center of the bottom of the treatment tank.

[0017] Furthermore, a pressure relief pipe is fixedly connected to the processing tank.

[0018] Furthermore, the top and the bottom of the inner cylinder are both fixedly sleeved with fixing blocks, and the fixing blocks are fixedly connected to the outer cylinder.

[0019] The beneficial effects of the above technical solution are:

[0020] 1. The utility model adopts the coordinated design of the sleeve, the packing, the water inlet channel and the water dispersion pipe. The arsenic-containing wastewater enters the inner cavity of the sleeve through the water inlet channel, enters the water dispersion pipe, and is discharged from the drainage pipe into the sludge, so that the arsenic-containing wastewater contacts the sludge and the arsenic-containing wastewater is purified. At the same time, driven by the lifting and rotating of the outer cylinder, the activity area of ​​the water dispersion pipe is larger, and the water dispersion pipe can act as a stirring rod with lifting and rotating motion to disperse and discharge the arsenic-containing wastewater into the sludge. After the arsenic-containing wastewater is emptied, the water dispersion pipe stirs the arsenic-containing wastewater and the sludge in a large range, thereby improving the purification efficiency of the sludge for the arsenic-containing wastewater.

[0021] 2. The utility model, through the coordinated design of the exhaust pipe, the rotary joint, the inner cylinder and the air outlet, can enable an external air pump to deliver oxygen into the exhaust pipe through the rotary joint and the inner cylinder and discharge it from the air outlet to perform aeration work. At the same time, driven by the lifting and rotating of the outer cylinder, the exhaust pipe moves with the outer cylinder, increasing the aeration area of ​​the exhaust pipe, making the aeration more uniform, allowing oxygen to fully contact with the sludge, and improving the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the utility model;

[0023] Figure 2 For this utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 3 For this utility model Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0025] Figure 4 This is a cross-sectional view of the connection between the rotating seat and the outer cylinder of the utility model.

[0026] Figure numerals: 1. treatment tank; 2. inlet and outlet pipes; 3. swivel joint; 4. linkage frame; 5. electric push rod; 6. outer cylinder; 7. threaded sleeve; 8. exhaust pipe; 9. air outlet; 10. inner cylinder; 11. water inlet channel; 12. packing; 13. water diffuser; 14. drain pipe; 15. sewage pipe; 16. pressure relief pipe; 17. sleeve; 18. rotating seat; 19. fixed block; 20. waste water pipe. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0028] Reference Figure 1-4 , an arsenic-containing wastewater treatment device includes a threaded sleeve 7, an outer cylinder 6, an exhaust pipe 8 and a water dispersion pipe 13.

[0029] The top of the treatment tank 1 is fixedly connected with an inlet and outlet pipe 2 for feeding sludge into the treatment tank 1. The threaded sleeve 7 passes through and is fixed at the center of the top of the treatment tank 1. The corresponding position of the outer cylinder 6 is provided with an external thread. The outer cylinder 6 is threadedly connected to the inside of the threaded sleeve 7 through the external thread. The thread lead angle of the external thread and the threaded sleeve 7 is greater than the friction angle, which can release the self-locking between the threads. By pressing and pulling the outer cylinder 6, the outer cylinder 6 can be lifted and rotated under the limit of the threaded sleeve 7. The outer surface of the outer cylinder 6 is fixedly sleeved with a rotating seat 18, a positioning hole for accommodating the rotating seat 18 is opened in the middle of the linkage frame 4, and a bearing is installed between the rotating seat 18 and the positioning hole, so that the outer cylinder 6 can rotate relative to the linkage frame 4. A through hole is opened on the linkage frame 4, and the top end of the inlet and outlet pipe 2 passes through the through hole and extends to the top of the linkage frame 4. An electric push rod 5 is fixed on the processing tank 1, and the telescopic end of the electric push rod 5 is fixedly connected to the linkage frame 4. The electric push rod 5 periodically performs a lifting action to provide a lifting force to the linkage frame 4 on the outer cylinder 6, so that the outer cylinder 6 can rotate while being lifted and lowered.

[0030] The exhaust pipe 8 is fixed to the bottom of the outer cylinder 6, and the inner cylinder 10 is arranged concentrically therewith inside the outer cylinder 6. The top and bottom of the inner cylinder 10 are fixedly sleeved with a fixing block 19, and the fixing block 19 is fixedly connected to the outer cylinder 6, so that the outer cylinder 6 and the inner cylinder 10 are linked together, and a water inlet channel 11 is formed between the outer cylinder 6 and the inner cylinder 10. The water dispersion pipe 13 is fixed to the outer surface of the outer cylinder 6 and is connected to the water inlet channel 11. A sleeve 17 is fixed on the linkage frame 4, and the two ends of the sleeve 17 are respectively rotatably sealed with the outer cylinder 6 and the inner cylinder 10 through the packing 12. The inner cavity of the sleeve 17 is connected with a waste water pipe 20, and the inner cavity of the water dispersion pipe 13 is fixedly connected with an equidistant exhaust pipe 20. The drain pipe 14 of the array, through the coordinated design of the sleeve 17, the packing 12, the water inlet channel 11 and the diffuser pipe 13, the arsenic-containing wastewater enters the inner cavity of the sleeve 17 and enters the diffuser pipe 13 through the water inlet channel 11 and is discharged from the drain pipe 14 into the sludge, so that the arsenic-containing wastewater contacts the sludge and purifies the arsenic-containing wastewater. At the same time, driven by the lifting and rotating of the outer cylinder 6, the activity area of ​​the diffuser pipe 13 is larger, and the diffuser pipe 13 can act as a stirring rod for lifting and rotating motion, while dispersing and discharging the arsenic-containing wastewater into the sludge. After the arsenic-containing wastewater is emptied, the diffuser pipe 13 stirs the arsenic-containing wastewater and the sludge in a large range, thereby improving the purification efficiency of the sludge for the arsenic-containing wastewater.

[0031] The bottom of the inner cylinder 10 is connected to the exhaust pipe 8, a rotary joint 3 is fixed on the linkage frame 4, and the fixed end of the rotary joint 3 is connected to the output end of the external air pump, and the rotating end of the rotary joint 3 is connected to the top of the inner cylinder 10. The outer surface of the exhaust pipe 8 is provided with equidistantly arranged air outlet holes 9 through the exhaust pipe 8. Through the coordinated design of the exhaust pipe 8, the rotary joint 3, the inner cylinder 10 and the air outlet holes 9, the external air pump can send oxygen into the exhaust pipe 8 through the rotary joint 3 and the inner cylinder 10 and discharge it from the air outlet holes 9 to perform aeration work. At the same time, driven by the lifting and rotating of the outer cylinder 6, the exhaust pipe 8 moves with the outer cylinder 6, increasing the aeration area of ​​the exhaust pipe 8, making the aeration more uniform, allowing the oxygen to fully contact with the sludge, and improving the treatment effect.

[0032] The inner bottom wall of the treatment tank 1 is funnel-shaped, and a sewage pipe 15 is fixedly connected to the center of the bottom of the treatment tank 1. After the arsenic-containing wastewater is treated, the suction end of the delivery pump is extended into the treatment tank 1 to absorb the water after the sludge precipitation and absorption, and then the sewage pipe 15 is opened so that the sludge can be discharged from the sewage pipe 15. During this period, the wastewater pipe 20 can be connected to clean water to flush the inner wall of the treatment tank 1. A pressure relief pipe 16 is fixedly connected to the treatment tank 1. The pressure relief pipe 16 can be used to discharge air when the treatment tank 1 is at a certain pressure, thereby achieving the effect of pressure relief in the treatment tank 1.

Claims

1. An arsenic-containing wastewater treatment device, characterized in that: It comprises a threaded sleeve (7), an outer cylinder (6), an exhaust pipe (8) and a water dispersion pipe (13); The threaded sleeve (7) passes through the top and bottom of the treatment tank (1) and is fixed at the center of the top; The outer cylinder (6) is provided with an external thread at a corresponding position, and the outer cylinder (6) is threadedly connected to the inside of the threaded sleeve (7) through the external thread. The thread lead angle of the external thread and the threaded sleeve (7) is greater than the friction angle thereof, so that the self-locking between the threads can be released. By pressing and pulling the outer cylinder (6), the outer cylinder (6) can be lifted and lowered and rotated under the limit of the threaded sleeve (7). The outer surface of the outer cylinder (6) is rotatably connected to a linkage frame (4), an electric push rod (5) is fixed on the processing tank (1), and the telescopic end of the electric push rod (5) is fixedly connected to the linkage frame (4); The exhaust pipe (8) is fixed to the bottom of the outer cylinder (6); an inner cylinder (10) arranged concentrically therewith is fixed inside the outer cylinder (6); a water inlet channel (11) is formed between the outer cylinder (6) and the inner cylinder (10); the bottom of the inner cylinder (10) is connected to the exhaust pipe (8); a rotary joint (3) is fixed to the linkage frame (4); the fixed end of the rotary joint (3) is connected to the output end of the external air pump; the rotating end of the rotary joint (3) is connected to the inner cylinder (10); The top of the outer cylinder (6) is connected; the water dispersion pipe (13) is fixed to the outer surface of the outer cylinder (6) and is connected to the water inlet channel (11); a sleeve (17) is fixed to the linkage frame (4); the two ends of the sleeve (17) are respectively rotatably sealed with the outer cylinder (6) and the inner cylinder (10) through packings (12); the inner cavity of the sleeve (17) is connected to the wastewater pipe (20); the arsenic-containing wastewater enters the inner cavity of the sleeve (17) and enters the water dispersion pipe (13) through the water inlet channel (11).

2. The arsenic-containing wastewater treatment device according to claim 1, characterized in that: The outer surface of the exhaust pipe (8) is provided with air outlet holes (9) arranged at equal distances.

3. The arsenic-containing wastewater treatment device according to claim 1, characterized in that: The inner cavity of the water diffusion pipe (13) is fixedly connected to drainage pipes (14) arranged at equal distances.

4. The arsenic-containing wastewater treatment device according to claim 1, characterized in that: The outer surface of the outer cylinder (6) is fixedly sleeved with a rotating seat (18), and a positioning hole for accommodating the rotating seat (18) is opened in the middle of the linkage frame (4), and a bearing is installed between the rotating seat (18) and the positioning hole.

5. The arsenic-containing wastewater treatment device according to claim 1, characterized in that: The top of the processing tank (1) is fixedly connected to an inlet and outlet pipe (2), a through hole is provided on the linkage frame (4), and the top end of the inlet and outlet pipe (2) passes through the through hole and extends to the top of the linkage frame (4).

6. The arsenic-containing wastewater treatment device according to claim 1, characterized in that: The inner bottom wall of the treatment tank (1) is funnel-shaped, and a sewage discharge pipe (15) is fixedly connected to the center of the bottom of the treatment tank (1).

7. The arsenic-containing wastewater treatment device according to claim 1, characterized in that: The treatment tank (1) is fixedly connected to a pressure relief pipe (16).

8. The arsenic-containing wastewater treatment device according to claim 1, characterized in that: The top and bottom of the inner cylinder (10) are both fixedly sleeved with fixing blocks (19), and the fixing blocks (19) are fixedly connected to the outer cylinder (6).

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