A medicated sewage treatment device

Abstract

The application discloses a medicated sewage treatment device, and relates to the technical field of sewage treatment equipment, which comprises a purification tank, a water inlet is fixedly penetrated on the left side of the purification tank, a water outlet is fixedly penetrated on the right side of the purification tank, a feeding inlet is fixedly penetrated on the top of the purification tank, a motor is fixedly installed on the right side of the purification tank, a transmission shaft is fixedly installed at the output end of the motor, and the medicated sewage treatment device further comprises a medicament feeding device, a pressure relief device and a filtering device; wherein the medicament feeding device comprises a stirring rod, a circular pipe, a connecting column, a disc, a V-shaped rod, a conical disc, a sliding rod and a fixing block, the stirring rod is fixedly installed on the circumferential surface of the transmission shaft, and the circular pipe is fixedly installed at the bottom of the feeding inlet; the medicament and sewage are stirred through the rotation of the stirring rod, the medicament and the sewage are better mixed, the medicament amount is controlled, and the waste caused by excessive medicament amount is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment equipment, in particular to a dosing sewage treatment device. BACKGROUND

[0002] In the process of metal pipe production and processing, a large amount of industrial wastewater is inevitably produced. The industrial wastewater cannot be directly discharged from the factory and needs to be purified. Some wastewater needs to be added with reagents for auxiliary purification during the treatment process. The dosing sewage treatment device, as an important sewage treatment equipment, is widely used in the field of industrial sewage treatment due to its high efficiency, economy and strong adaptability.

[0003] The patent with the patent announcement number CN211871435U relates to a dosing sewage treatment device for sewage treatment, which comprises a medicine mixing tank, a flow pump, a connecting pipeline, an installation pipe body, a dosing pipe disc and a uniform mixing assembly. The installation pipe body is installed on the pipeline between the treatment sewage sections. The dosing pipe disc and the uniform mixing assembly are arranged on the cross section of the installation pipe body. The medicine mixing tank and the flow pump are arranged on one side of the installation pipe body. The connecting pipeline is arranged between the medicine mixing tank and the flow pump and between the flow pump and the dosing pipe disc. The uniform mixing assembly is provided with two groups of uniform mixing front and rear assemblies. The uniform mixing front and rear assemblies are arranged on both sides of the dosing pipe disc. It belongs to the technical field of sewage treatment equipment and specifically relates to a dosing sewage treatment device for sewage treatment, which can improve the uniformity of dosing, easily mix the reagents after adding, improve the speed of mixing the reagents in the sewage, save the number of sewage treatment tanks, simplify the treatment process and improve the sewage treatment efficiency.

[0004] In the above-mentioned patent, the dosing sewage treatment device for sewage treatment can improve the speed of mixing the reagents in the sewage, save the number of sewage treatment tanks, simplify the treatment process and improve the sewage treatment efficiency. However, it is difficult to control the amount of reagents during the process of adding the reagents into the sewage, which causes waste of reagents. In addition, the reagents precipitate in the sewage, which makes it difficult for the reagents to completely dissolve in water. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a dosing sewage treatment device to solve the problems in the background art.

[0006] To achieve the above-mentioned purposes, the present application is implemented by the following technical solutions: a dosing sewage treatment device, comprising a purification tank, a water inlet is fixedly penetrated on the left side of the purification tank, a water outlet is fixedly penetrated on the right side of the purification tank, a feeding port is fixedly penetrated on the top of the purification tank, a motor is fixedly installed on the right side of the purification tank, a transmission shaft is fixedly installed on the output end of the motor, and an adding device, a pressure relief device and a filtering device are further included.

[0007] The medicine feeding device comprises a stirring rod, a circular tube, a connecting column, a disc, a V-shaped rod, a conical disc, a sliding rod and a fixed block, the stirring rod is fixedly installed on the circumferential surface of the transmission shaft, the circular tube is fixedly installed at the bottom of the feeding port, the conical disc is slidingly installed at the bottom of the inner wall of the feeding port, the connecting column is fixedly installed at the bottom of the conical disc, the disc is fixedly installed on the circumferential surface of the connecting column, the V-shaped rod is fixedly installed at the bottom of the connecting column, the sliding rod is slidingly installed on the inner wall of the circular tube, and the fixed block is fixedly installed on the inner wall of the circular tube.

[0008] According to the technical scheme, the inner wall of the purification tank is fixedly installed with a first filter screen, the inner wall of the purification tank is fixedly installed with a second filter screen, a reciprocating thread groove is formed in the circumferential surface of the transmission shaft, the transmission shaft is threadedly penetrated through the backflow plate, the right side of the second filter screen is fixedly installed with an elongated rod, and the backflow plate is slidingly installed on the surface of the elongated rod.

[0009] According to the technical scheme, a first spring is arranged between the sliding rod and the fixed block, an arc-shaped hole is formed in the surface of the disc, and the V-shaped rod is an arc surface close to the stirring rod, so that the sliding rod is conveniently reset, the conical disc is reciprocatingly moved, the medicine feeding is controlled, and the disc is reciprocatingly moved to scatter the medicine.

[0010] According to the technical scheme, the pressure relief device comprises an exhaust pipe, a pressure relief disc, a sealing disc, an L-shaped rod, a cross rod, an elastic telescopic rod and a third filter screen, the exhaust pipe is fixedly penetrated through the inner and outer walls of the purification tank, the pressure relief disc is slidingly installed on the inner wall of the exhaust pipe, the sealing disc is slidingly installed on the side of the pressure relief disc close to the first filter screen, the L-shaped rod is fixedly installed on the side of the sealing disc close to the disc, the cross rod is fixedly installed on the side of the L-shaped rod close to the disc, one end of the elastic telescopic rod is fixedly installed on the top of the cross rod, the other end of the elastic telescopic rod is slidingly installed on the bottom of the exhaust pipe, the pressure relief disc is provided with a circular hole, and the third filter screen is fixedly installed on the inner wall of the circular hole.

[0011] According to the technical scheme, the second spring is arranged between the pressure relief disc and the exhaust pipe, the side of the cross rod close to the disc is a slope, the pressure relief disc is conveniently reset, and the air pressure inside the purification tank is reciprocatingly exhausted.

[0012] According to the technical scheme, the filter device comprises a sliding rod, a threaded column, an activated carbon box, a rotating ring, a circular ring, a fan blade and an arc block, the sliding rod is slidably arranged through the inner and outer walls of the exhaust pipe, the threaded column is rotatably arranged at the top of the sliding rod, the activated carbon box is fixedly arranged on the inner wall of the exhaust pipe, the rotating ring is threadedly connected on the circumferential surface of the threaded column, the circular ring is sleeved on the circumferential surface of the rotating ring, the fan blade is fixedly arranged on the circumferential surface of the circular ring, and the arc block is fixedly arranged on the bottom of the inner wall of the activated carbon box.

[0013] According to the technical scheme, the threaded column is slidably arranged through the activated carbon box, so that the rotating ring is positively and reversely rotated, the fan blade is better used for stirring the activated carbon, and the purification efficiency is improved.

[0014] According to the technical scheme, the surface of the backflow plate is provided with square holes, the transmission shaft is rotatably arranged through the first filter screen and the second filter screen, and the sewage is filtered and backflowed, so that the transmission shaft is conveniently rotated.

[0015] The application provides a medicated sewage treatment device.

[0016] (1) When the sewage needs to be treated, the motor is started, the motor drives the transmission shaft to rotate, the transmission shaft drives the stirring rod to rotate, the sewage and the medicament are stirred, the water and the medicament are better dissolved, the sewage is better purified, meanwhile, the stirring rod rotates and is in contact with and extrudes the V-shaped rod, the V-shaped rod is extruded and moves upwards, the amount of the medicament is controlled, the medicament is prevented from being excessively added and wasted, and meanwhile, the V-shaped rod moves upwards and drives the disc to move upwards, the medicament is scattered, and the medicament is prevented from being concentrated and accumulated together and difficult to be dissolved.

[0017] (2) In this invention, when sewage is treated, the agent dissolves with the sewage to generate gas. When the gas pressure inside the purification tank is too high, the gas pressure pushes the pressure relief plate to move closer to the disc. The movement of the pressure relief plate drives the crossbar to move. The crossbar contacts the disc. When the disc moves upward, it drives the crossbar to move upward, releasing the seal on the pressure relief plate and venting the gas inside the purification tank. This prevents the gas pressure inside the purification tank from being too high and affecting the purification efficiency. At the same time as the gas pressure is released, it is discharged through the No. 3 filter screen to prevent the agent from flowing out with the gas during the pressure relief, thus causing waste of the agent.

[0018] (3) In this invention, when the pressure is released, the crossbar contacts the slide bar and squeezes the slide bar. The slide bar moves upward and drives the threaded column to move upward. The thread on the surface of the threaded column drives the rotating ring to rotate, stirring the activated carbon inside the activated carbon box. This allows the activated carbon to fully contact the gas, preventing the release of toxic gases and harming the human body. At the same time, the fan blades rotate and contact the arc block, causing the fan blades to be squeezed upward and stir the activated carbon up and down, thus increasing the contact area between the activated carbon and the toxic gas and purifying the toxic gas. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the purification tank of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the circular tube and the feed inlet of the present invention;

[0022] Figure 4 This is a schematic diagram of the positional structure of the sliding rod and the circular tube in this invention;

[0023] Figure 5 This is a schematic diagram showing the position and structure of the purification tank and exhaust pipe of the present invention;

[0024] Figure 6 For the present invention Figure 5 A magnified structural diagram of A in the middle;

[0025] Figure 7 This is a schematic diagram of the position structure of the sliding rod and the exhaust pipe of the present invention;

[0026] Figure 8 For the present invention Figure 7 A magnified structural diagram of B in the diagram;

[0027] Figure 9 This is a schematic diagram of the position structure of the rotating ring and the threaded column of the present invention.

[0028] In the figure: 1, purification tank; 2, water inlet; 3, water outlet; 4, feed inlet; 5, motor; 6, transmission shaft; 7, No. 1 filter screen; 8, No. 2 filter screen; 9, backflow plate; 101, stirring rod; 102, round pipe; 103, connecting column; 104, disc; 105, V-shaped rod; 106, conical disc; 107, sliding rod; 108, fixed block; 111, exhaust pipe; 112, pressure relief disc; 113, sealing disc; 114, L-shaped rod; 115, cross rod; 116, elastic telescopic rod; 117, No. 3 filter screen; 121, sliding rod; 122, threaded column; 123, activated carbon box; 124, rotating ring; 125, circular ring; 126, fan blade; 127, arc block; 13, elongated rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] Please refer to Figures 1-9 An embodiment of the present application is a medicated sewage treatment device, which comprises a purification tank 1, a water inlet 2 fixedly penetrating the left side of the purification tank 1, a water outlet 3 fixedly penetrating the right side of the purification tank 1, a feed inlet 4 fixedly penetrating the top of the purification tank 1, and a motor 5 fixedly installed on the right side of the purification tank 1, and the output end of the motor 5 is fixedly installed with a transmission shaft 6, and further comprising a medicating device.

[0031] The medicating device comprises a stirring rod 101, a round pipe 102, a connecting column 103, a disc 104, a V-shaped rod 105, a conical disc 106, a sliding rod 107, and a fixed block 108, the stirring rod 101 is fixedly installed on the circumferential surface of the transmission shaft 6, the round pipe 102 is fixedly installed at the bottom of the feed inlet 4, the conical disc 106 is slidingly installed at the inner wall bottom of the feed inlet 4, the connecting column 103 is fixedly installed at the bottom of the conical disc 106, the disc 104 is fixedly installed on the circumferential surface of the connecting column 103, the V-shaped rod 105 is fixedly installed at the bottom of the connecting column 103, the sliding rod 107 is slidingly installed in the inner wall of the round pipe 102, and the fixed block 108 is fixedly installed in the inner wall of the round pipe 102. The medicated sewage is stirred by rotating the stirring rod 101, so that the medicament and the sewage are better mixed, the amount of medicament is controlled, waste is prevented due to excessive amount of medicament, the medicament is dispersed by reciprocating movement of the disc 104, and the medicament is prevented from accumulating in one place and being difficult to dissolve.

[0032] The inner wall of the purification tank 1 is fixedly provided with a first filter screen 7, and the inner wall of the purification tank 1 is fixedly provided with a second filter screen 8. A reciprocating threaded groove is formed in the circumferential surface of the transmission shaft 6, and the transmission shaft 6 is threaded through the backflow plate 9. The right side of the second filter screen 8 is fixedly provided with an elongated rod 13, and the backflow plate 9 is slidingly installed on the surface of the elongated rod 13. The backflow plate 9 filters the impurities and solids in the sewage, improves the purification effect, and simultaneously performs reciprocating backflow on the sewage, so that the medicament and the sewage are better mixed, and the purification efficiency is improved.

[0033] A first spring is arranged between the sliding rod 107 and the fixed block 108. An arc-shaped hole is formed in the surface of the disc 104, and the V-shaped rod 105 is a circular arc surface close to the stirring rod 101, so as to facilitate the resetting of the sliding rod 107 and the reciprocating movement of the conical disc 106, thereby controlling the medicament feeding and preventing waste caused by excessive medicament addition.

[0034] When the sewage needs to be purified, the sewage is pumped into the purification tank 1 from the water inlet 2, and the motor 5 is started. The motor 5 drives the backflow plate 9 to reciprocate and backflow processes the sewage, so that the sewage is better contacted with the medicament. Meanwhile, the motor 5 drives the transmission shaft 6 to rotate, and the transmission shaft 6 drives the stirring rod 101 to rotate, so as to stir the sewage and make the medicament better dissolved in the sewage. The stirring rod 101 rotates and contacts the V-shaped rod 105 and extrudes the V-shaped rod 105. The V-shaped rod 105 is upwardly moved under the extrusion force, and the V-shaped rod 105 drives the connecting column 103 to upwardly move, and the connecting column 103 drives the disc 104 to upwardly move. Meanwhile, the connecting column 103 drives the conical disc 106 to upwardly move, so as to open the sealing of the circular pipe 102 and make the medicament enter the inside of the purification tank 1. When the stirring rod 101 is disengaged from the V-shaped rod 105, the connecting column 103 is downwardly moved under the elastic force of the first spring. The connecting column 103 drives the conical disc 106 to downwardly move and seals the circular pipe 102, so as to reciprocate the conical disc 106 and control the medicament feeding, thereby preventing waste caused by excessive medicament feeding. Meanwhile, the connecting column 103 drives the disc 104 to downwardly move, so as to reciprocate the disc 104 and scatter the medicament, thereby preventing the medicament from being accumulated in one place and being difficult to dissolve.

[0035] Please refer to Figures 1-9On the basis of the above-mentioned embodiments, another embodiment of the present application further comprises a pressure relief device and a filtering device. The pressure relief device comprises an exhaust pipe 111, a pressure relief disc 112, a sealing disc 113, an L-shaped rod 114, a cross rod 115, an elastic telescopic rod 116 and a third filter screen 117. The exhaust pipe 111 is fixedly penetrated through the inner and outer walls of the purification tank 1. The pressure relief disc 112 is slidingly installed on the inner wall of the exhaust pipe 111. The sealing disc 113 is slidingly installed on the side of the pressure relief disc 112 close to the first filter screen 7. The L-shaped rod 114 is fixedly installed on the side of the sealing disc 113 close to the disc 104. The cross rod 115 is fixedly installed on the side of the L-shaped rod 114 close to the disc 104. One end of the elastic telescopic rod 116 is fixedly installed on the top of the cross rod 115. The other end of the elastic telescopic rod 116 is slidingly installed on the bottom of the exhaust pipe 111. The pressure relief disc 112 is provided with a circular hole. The third filter screen 117 is fixedly installed on the inner wall of the circular hole. The gas pressure inside the purification tank 1 is discharged through the exhaust pipe 111. When the gas pressure inside the purification tank 1 is too high, the sewage purification effect is affected and the sewage purification efficiency is reduced. When the gas is discharged through the third filter screen 117, the medicament is filtered. When the gas pressure is discharged, the medicament is prevented from being discharged with the airflow, thereby preventing waste of the medicament.

[0036] A second spring is arranged between the pressure relief disc 112 and the exhaust pipe 111. The side of the cross rod 115 close to the disc 104 is a slope. The pressure relief disc 112 is conveniently reset. The gas pressure inside the purification tank 1 is reciprocally discharged.

[0037] The filtering device comprises a sliding rod 121, a threaded column 122, an activated carbon box 123, a rotating ring 124, a circular ring 125, a fan blade 126 and an arc block 127. The sliding rod 121 is slidingly penetrated through the inner and outer walls of the exhaust pipe 111. The threaded column 122 is rotationally installed on the top of the sliding rod 121. The activated carbon box 123 is fixedly installed on the inner wall of the exhaust pipe 111. The rotating ring 124 is threadedly connected on the circumferential surface of the threaded column 122. The circular ring 125 is sleeved on the circumferential surface of the rotating ring 124. The fan blade 126 is fixedly installed on the circumferential surface of the circular ring 125. The arc block 127 is fixedly installed on the inner wall bottom of the activated carbon box 123. The gas generated by the dissolution of the medicament and the sewage is purified. The activated carbon inside the activated carbon box 123 is stirred through the fan blade 126. The activated carbon is better contacted with the gas. The toxic gas is better purified.

[0038] The circumferential surface of the threaded column 122 is provided with a reciprocating thread groove. The threaded column 122 is slidingly penetrated through the activated carbon box 123. The rotating ring 124 is positively and reversely rotated. The fan blade 126 better stirs the activated carbon. The purification efficiency is improved.

[0039] The surface of the reflux plate 9 is provided with a square hole. The transmission shaft 6 is rotationally penetrated through the first filter screen 7 and the second filter screen 8. The sewage is filtered and refluxed. The sewage purification effect is improved.

[0040] When the medicament dissolves in the sewage, gas is generated. When the air pressure inside the purification tank 1 is too large, the air pressure will push the pressure relief disc 112 to move towards the disc 104, the movement of the pressure relief disc 112 towards the disc 104 drives the L-shaped rod 114 to move towards the disc 104, the movement of the L-shaped rod 114 towards the disc 104 drives the horizontal rod 115 to move towards the disc 104, the movement of the horizontal rod 115 towards the disc 104 contacts the disc 104, the upward movement of the disc 104 drives the horizontal rod 115 to move upwards, the upward movement of the horizontal rod 115 drives the L-shaped rod 114 to move upwards, the upward movement of the L-shaped rod 114 drives the sealing disc 113 to move upwards, the upward movement of the sealing disc 113 unseals the disc 104, so that the gas is discharged from the circular hole, preventing the air pressure inside the purification tank 1 from being too large, affecting the purification efficiency, the gas is discharged through the No. 3 filter screen 117, preventing the medicament from being discharged when the gas is discharged, causing waste of the medicament.

[0041] When the gas is discharged, the toxic gas moves upwards through the exhaust pipe 111 and contacts the activated carbon box 123, the activated carbon box 123 purifies the gas, preventing the toxic gas from being discharged and affecting the surrounding environment, at the same time, the horizontal rod 115 moves upwards and contacts the sliding rod 121 and extrudes the sliding rod 121, the sliding rod 121 is extruded upwards, the upward movement of the sliding rod 121 drives the threaded column 122 to move upwards, the upward movement of the threaded column 122 drives the rotating ring 124 to rotate through the threaded groove, the rotation of the rotating ring 124 drives the circular ring 125 to rotate, the rotation of the circular ring 125 drives the fan blade 126 to rotate, increasing the contact area of the toxic gas and the activated carbon, purifying the toxic gas, at the same time, the fan blade 126 contacts the arc block 127, the arc block 127 extrudes the fan blade 126, so that the fan blade 126 moves upwards and stirs the activated carbon box 123 up and down, better allowing the toxic gas to contact the activated carbon and purify the toxic gas.

[0042] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. A dosing wastewater treatment device comprising a purification tank (1), characterized in that: The left side of the purification tank (1) is fixedly penetrated by a water inlet (2), the right side of the purification tank (1) is fixedly penetrated by a water outlet (3), the top of the purification tank (1) is fixedly penetrated by a feed inlet (4), and the right side of the purification tank (1) is fixedly installed with a motor (5); the output end of the motor (5) is fixedly installed with a transmission shaft (6); and the device further comprises a medicine feeding device, a pressure relief device and a filtering device. The medicine feeding device comprises a stirring rod (101), a circular tube (102), a connecting column (103), a disc (104), a V-shaped rod (105), a conical disc (106), a sliding rod (107) and a fixed block (108); the stirring rod (101) is fixedly installed on the circumferential surface of the transmission shaft (6); the circular tube (102) is fixedly installed at the bottom of the feed inlet (4); the conical disc (106) is slidingly installed at the inner wall bottom of the feed inlet (4); the connecting column (103) is fixedly installed at the bottom of the conical disc (106); the disc (104) is fixedly installed on the circumferential surface of the connecting column (103); the V-shaped rod (105) is fixedly installed at the bottom of the connecting column (103); the sliding rod (107) is slidingly installed on the inner wall of the circular tube (102); and the fixed block (108) is fixedly installed on the inner wall of the circular tube (102).

2. A dosing device for wastewater treatment according to claim 1, characterized in that A first filter screen (7) is fixedly installed on the inner wall of the purification tank (1); a second filter screen (8) is fixedly installed on the inner wall of the purification tank (1); a reciprocating thread groove is formed on the circumferential surface of the transmission shaft (6); the transmission shaft (6) is threadedly penetrated by a backflow plate (9); the second filter screen (8) is fixedly installed with an elongated rod (13) on the right side; and the backflow plate (9) is slidingly installed on the surface of the elongated rod (13).

3. A dosing device for wastewater treatment according to claim 2, characterised in that: A first spring is arranged between the sliding rod (107) and the fixed block (108); an arc-shaped hole is formed on the surface of the disc (104); and the V-shaped rod (105) is a circular arc surface close to the stirring rod (101).

4. A dosing device for wastewater treatment according to claim 3, characterised in that: The pressure relief device comprises an exhaust pipe (111), a pressure relief disc (112), a sealing disc (113), an L-shaped rod (114), a cross rod (115), an elastic telescopic rod (116) and a third filter screen (117); the exhaust pipe (111) is fixedly penetrated by the inner and outer walls of the purification tank (1); the pressure relief disc (112) is slidingly installed on the inner wall of the exhaust pipe (111); the sealing disc (113) is slidingly installed on the side of the pressure relief disc (112) close to the first filter screen (7); the L-shaped rod (114) is fixedly installed on the side of the sealing disc (113) close to the first filter screen (7); the cross rod (115) is fixedly installed on the side of the L-shaped rod (114) close to the disc (104); one end of the elastic telescopic rod (116) is fixedly installed on the top of the cross rod (115); the other end of the elastic telescopic rod (116) is slidingly installed on the bottom of the exhaust pipe (111); the pressure relief disc (112) is provided with a circular hole; and the third filter screen (117) is fixedly installed on the inner wall of the circular hole.

5. A dosing device for wastewater treatment according to claim 4, characterised in that: The pressure relief disc (112) is provided with a second spring between the exhaust pipe (111), and the side of the cross rod (115) close to the disc (104) is a slope.

6. A dosing device for wastewater treatment according to claim 5, characterised in that: The filtering device comprises a sliding rod (121), a threaded column (122), an activated carbon box (123), a rotating ring (124), a circular ring (125), a fan blade (126) and an arc block (127), the sliding rod (121) is slidably arranged through the inner and outer walls of the exhaust pipe (111), the threaded column (122) is rotatably arranged on the top of the sliding rod (121), the activated carbon box (123) is fixedly arranged on the inner wall of the exhaust pipe (111), the rotating ring (124) is threadedly connected on the circumferential surface of the threaded column (122), the circular ring (125) is sleeved on the circumferential surface of the rotating ring (124), the fan blade (126) is fixedly arranged on the circumferential surface of the circular ring (125), and the arc block (127) is fixedly arranged on the bottom of the inner wall of the activated carbon box (123).

7. A dosing device for wastewater treatment according to claim 6, characterised in that: The circumferential surface of the threaded column (122) is provided with reciprocating screw grooves, and the threaded column (122) is slidably arranged through the activated carbon box (123).

8. A dosing device for wastewater treatment according to claim 2, characterized in that: The surface of the reflux plate (9) is provided with a square hole, the transmission shaft (6) is rotatably arranged through the first filter screen (7), and the transmission shaft (6) is rotatably arranged through the second filter screen (8).

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