Sewage treatment device and sewage treatment method

Abstract

A sewage treatment device and a sewage treatment method belong to the technical field of sewage treatment, comprising a reaction tank, a cover plate is arranged on the top of the reaction tank, a medicine adding port is arranged at the center of the cover plate, a rotating mechanism and a lifting and translation mechanism are fixedly arranged on the cover plate, the rotating mechanism comprises a first support arm which is electrically driven to rotate around an axis, a measuring cup is respectively inserted at both ends of the first support arm, a medicine replenishing mechanism for replenishing medicine to the measuring cup is arranged on one side of the reaction tank, the lifting and translation mechanism comprises a second support arm which can be moved horizontally and lifted, the second support arm is used to remove the measuring cup from the first support arm, a cup bottom opening unit is fixedly arranged on the side wall of the lifting and translation mechanism, the first support arm can exchange the positions of the measuring cups at both ends thereof, and in combination with the lifting and translation mechanism and the medicine replenishing mechanism, medicine can be quantitatively added to the reaction tank from one measuring cup, and medicine replenishment can be performed in another measuring cup at the same time, thereby shortening the time interval between divided medicine additions and ensuring the efficiency and quality of sewage treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a sewage treatment device and a sewage treatment method. Background Art

[0002] Various wastewaters are generated during the production of circuit boards. When treating wastewater, corresponding chemical solutions need to be added to react with the wastewater for precipitation or oxidation. The quantitative supply of chemical solutions is important for the subsequent reactions with the chemical solutions.

[0003] In the sewage treatment process, the dosing pump is generally used to pump in and add chemicals. The flow calculation during dosing is based on the factory design flow and opening of the pump to calculate the approximate flow data, without considering the pipe diameter problem and related matters of pipe distance and pumping height, resulting in a large deviation between the actual chemical addition and the theoretical calculation data. In addition, the chemical composition of sewage treatment is relatively viscous, which is easier to block the pipe and pump body. The chemical addition pump has been idling or the amount of chemical added is obviously insufficient, resulting in unstable wastewater treatment results. In order to solve the above problems, a quantitative container is currently set at the injection port of the sewage treatment device, and the chemical is first pumped into the quantitative container, and the chemical is added into the treatment device through the quantitative container.

[0004] Although quantitative addition of medicine can be achieved through a quantitative container, in the sewage treatment process, different water qualities require different amounts of medicine. In the method of setting a quantitative container at the injection port, the capacity of the quantitative container is limited. When the required amount of medicine exceeds the capacity of the quantitative container, it is necessary to replenish the quantitative container with medicine for the second time and make subsequent quantitative additions after the first quantitative addition of medicine is completed. The time interval between adding medicine is long and the addition efficiency is low. The long time interval between adding medicine will cause water quality to fluctuate during the treatment process, affecting the overall treatment effect. Summary of the invention

[0005] In order to solve the technical problem that a quantitative container is set at the injection port of the existing sewage treatment device in the above-mentioned background technology, and medicine is added through the quantitative container, when the required amount of medicine exceeds the capacity of the quantitative container, the medicine is added in batches, resulting in a long addition time interval, thereby affecting the sewage treatment effect, the present invention provides a sewage treatment device.

[0006] The technical solution of the present invention is as follows:

[0007] The invention provides a sewage treatment device, comprising a reaction tank, wherein a cover plate is provided on the top of the reaction tank, a drug adding port is provided at the center of the cover plate, a rotating mechanism and a lifting and translational mechanism are fixedly provided on the cover plate, the rotating mechanism comprises a first support arm which is electrically driven to rotate around an axis, a measuring cup is respectively inserted at both ends of the first support arm, a drug replenishing mechanism for replenishing drugs to the measuring cup is provided on one side of the reaction tank, the lifting and translational mechanism comprises a second support arm which can be moved horizontally and lifted, the second support arm is used to remove the measuring cup from the first support arm, a cup bottom opening unit is provided just above the drug adding port, the cup bottom opening unit is fixedly provided on the side wall of the lifting and translational mechanism, the setting of the rotating mechanism can exchange the positions of the two measuring cups at both ends of the first support arm, and with the use of the lifting and translational mechanism and the drug replenishing mechanism, one measuring cup can quantitatively add drugs to the reaction tank, and at the same time, another measuring cup can replenish drugs, thereby saving time, shortening the time interval between divided drug additions, improving drug addition efficiency, and ensuring the effect and quality of sewage treatment.

[0008] Preferably, a first slot is provided at both ends of the first support arm, and a second slot is provided at one end of the second support arm close to the rotating mechanism. The first slot and the second slot vertically penetrate the corresponding first support arm and the second support arm, and one end of the first slot and the second slot is open. The setting of the first slot and the second slot facilitates the vertical support of the measuring cup, and the setting of the open end facilitates the lateral movement of the measuring cup so as to disengage from the corresponding slot, thereby facilitating the installation and removal of the measuring cup.

[0009] Preferably, a ball is provided in the measuring cup, and a flange is fixedly provided at the top opening of the measuring cup, and the outer diameter of the flange is larger than the width of the first slot. The flange can be used to support the measuring cup so that the measuring cup can be vertically inserted in the first slot without falling. The bottom of the measuring cup is a round bottom and the outer diameter is larger than the width of the second slot. A liquid outlet pipe is fixedly provided at the center position of the bottom of the measuring cup, and the outer diameter of the liquid outlet pipe is smaller than the width of the second slot. The diameter of the ball is larger than the inner diameter of the liquid outlet pipe, and the ball can block the liquid outlet pipe under the action of gravity.

[0010] Preferably, a limiting portion is fixedly provided on the outer wall of the liquid outlet tube along its circumferential direction, and there is a space between the limiting portion and the bottom of the measuring cup to allow the second support arm to be inserted. The second support arm can be used to support the bottom of the measuring cup, and the measuring cup can be separated from the first support arm by lifting and moving the measuring cup horizontally.

[0011] Preferably, the cup bottom opening unit includes a guide body, which is an inverted conical structure. The bottom of the guide body is fixedly connected to the side wall of the lifting and translation mechanism through a connecting rod. The top diameter of the guide body is smaller than the inner diameter of the liquid outlet pipe. The top of the guide body can be inserted into the measuring cup from the bottom to push the ball to open the liquid outlet pipe. The medicine in the measuring cup is discharged through the liquid outlet pipe and is evenly dispersed and flows around under the guidance of the guide body, so that the medicine is evenly added into the reaction tank, thereby improving the sewage treatment efficiency and effect.

[0012] Preferably, a plurality of guide grooves are provided on the side wall of the guide body at intervals along its circumference, and the guide grooves extend axially along the outer wall of the guide body to play the role of diversion and diversion, thereby preventing the medicine from flowing in strands due to the influence of viscosity, surface tension and density, and ensuring the uniformity of the addition of the medicine.

[0013] Preferably, a support groove is provided on the top of the diversion body, and the support groove is a circular groove structure, which is used to support and limit the ball, so that when the diversion body is used to push the ball upward, the ball can move vertically without shifting to one side, thereby avoiding the influence of the ball on the uniform flow of the medicine to the corresponding diversion groove, thereby ensuring the uniform outflow and discharge of the medicine.

[0014] The present invention provides a sewage treatment method, which is as follows:

[0015] The medicine replenishing mechanism adds the medicine into the measuring cup at one end of the first support arm. After the specified amount of medicine is added, the first support arm rotates around the axis so that the empty measuring cup on the first support arm and the measuring cup containing the medicine are exchanged, and the second support arm moves horizontally to the bottom of the measuring cup containing the medicine, and the second support arm lifts the measuring cup containing the medicine upward and resets it horizontally;

[0016] When the second support arm is horizontally reset, the second support arm drives the metering cup containing the medicine to descend, so that the top of the guide body is inserted into the first metering cup and pushes the ball upward, and the medicine flows evenly into the reaction pool under the guidance of the guide body.

[0017] Preferably, when the amount of medicine in a measuring cup is less than the amount of medicine required for sewage treatment, during the process of adding medicine into the reaction tank, the medicine replenishing mechanism replenishes medicine into the empty measuring cup on the first support arm, and the amount of medicine replenished is the actual required amount of medicine. After the metering cup on the second support arm is added with medicine, the second support arm reinstalls the metering cup to the first support arm, and the first support arm drives the two metering cups to exchange positions. The second support arm removes the metering cup containing medicine from the first support arm and moves it to the top of the medicine adding port to add medicine.

[0018] It can be seen from the above technical solutions that the advantages of the present invention are:

[0019] 1. The rotating mechanism is provided with a first support arm which is electrically driven to rotate around the axis, and can exchange the positions of the two metering cups at both ends of the first support arm. With the use of the lifting and translation mechanism and the medicine replenishing mechanism, one metering cup can quantitatively add medicine to the reaction tank, and at the same time, another metering cup can replenish medicine, which saves time, shortens the time interval between the divided dosing, improves the dosing efficiency, and ensures the effect and quality of sewage treatment.

[0020] 2. The diversion body is an inverted conical structure. The top diameter of the diversion body is smaller than the inner diameter of the liquid outlet pipe. The top of the diversion body can be inserted into the measuring cup from the bottom to push the ball to open the liquid outlet pipe. The medicine in the measuring cup is discharged through the liquid outlet pipe and evenly dispersed and flows around under the guidance of the diversion body, so as to evenly add the medicine into the reaction tank and improve the efficiency and effect of sewage treatment.

[0021] 3. A number of guide grooves are arranged at intervals along the circumference of the side wall of the guide body. The guide grooves extend axially along the outer wall of the guide body to play the role of flow diversion and diversion, thereby preventing the liquid medicine from flowing in strands due to the influence of viscosity, surface tension and density, and ensuring the uniformity of liquid medicine addition.

[0022] 4. A support groove is provided on the top of the guide body. The support groove is a circular groove structure, which is used to support and limit the ball. When the guide body is used to push the ball upward, the ball can move vertically without shifting to one side, thereby avoiding the influence of the ball on the uniform flow of the medicine to the corresponding guide groove, thereby ensuring the uniform outflow and discharge of the medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 It is a schematic structural diagram of a sewage treatment device in a drug replenishing state according to one or more embodiments of the present invention;

[0025] Figure 2 It is a schematic structural diagram of a sewage treatment device in a drug-adding state according to one or more embodiments of the present invention;

[0026] Figure 3 A schematic top view of a rotating mechanism according to one or more embodiments of the present invention;

[0027] Figure 4 It is a schematic structural diagram of a cup bottom opening unit according to one or more embodiments of the present invention;

[0028] The components represented by the reference numerals in the figure are:

[0029] 1. Medicine storage tank; 2. Dosing pump; 3. Measuring cup; 4. Electric control valve; 5. Rotating mechanism; 6. Lifting and translation mechanism; 7. Controller; 8. Reaction pool; 9. Dosing port; 10. First support arm; 11. Cup bottom opening unit; 12. Ball; 13. Limiting part; 14. Guide groove; 15. Second support arm; 16. First slot; 17. Guide body; 18. Support groove. DETAILED DESCRIPTION

[0030] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0031] Example 1

[0032] In a typical embodiment of the present invention, Figure 1-Figure 2 As shown, a sewage treatment device is proposed, including: a medicine storage tank 1, a dosing pump 2, a rotating mechanism 5, a lifting and translation mechanism 6, a reaction tank 8, a cup bottom opening unit 11 and a measuring cup 3. The medicine storage tank 1 is used to store sewage treatment medicine. The medicine storage tank 1 is located on the ground on one side of the reaction tank 8. The reaction tank 8 contains sewage to be treated. The dosing pump 2 is also placed on the ground on one side of the reaction tank 8. The medicine storage tank 1 and the dosing pump 2 are combined to form a medicine replenishing mechanism. The medicine storage tank 1 is connected to the dosing pump 2 through a pipeline. The dosing pump 2 is also connected to the upper opening of the measuring cup 3 through a dosing pipe, so that the dosing pump 2 can be used to pump the medicine in the medicine storage tank 1 into the measuring cup 3. An electric control valve 4 is provided at the pipe mouth of the dosing pipe for remotely controlling the opening and closing of the pipe mouth of the dosing pipe.

[0033] It is understandable that, in order to facilitate limiting the position of the dosing tube, a support frame may be provided and the dosing tube may be fixedly provided on the support frame to facilitate the arrangement of the dosing tube.

[0034] A cover plate is provided on the top of the reaction tank 8, and a dosing port 9 is provided at the center of the cover plate. A rotating mechanism 5 is fixedly arranged on the top cover plate of the reaction tank 8. The rotating mechanism 5 includes a rotating unit and a first supporting arm 10, wherein the rotating unit is fixedly arranged on the cover plate of the reaction tank 8, and the rotating unit is an electrically driven rotating structure, such as a servo motor structure. The first supporting arm 10 is fixedly arranged on the top output end of the rotating unit, and the center position of the first supporting arm 10 is fixedly connected to the top output end of the rotating unit, such as Figure 3As shown, a first slot 16 is respectively provided at both ends of the first support arm 10, the first slot 16 vertically penetrates the first support arm 10, and one end of the first slot 16 is open, the measuring cup 3 is vertically inserted in the first slot 16, and the measuring cup 3 can slide out of the first slot 16 from the open end of the first slot 16 through horizontal lateral movement.

[0035] The setting of the rotating mechanism 5 can exchange the positions of the two measuring cups 3 at both ends of the first support arm 10, so that one measuring cup 3 can quantitatively add medicine to the reaction tank 8, and at the same time, the other measuring cup 3 can replenish medicine, which saves time, shortens the time interval between the multiple additions, improves the dosing efficiency, and ensures the effect and quality of sewage treatment.

[0036] The lifting and translation mechanism 6 is fixedly set on the top cover plate of the reaction pool 8. Specifically, the lifting and translation mechanism 6 includes a lifting unit, a translation unit and a second support arm 15. The lifting unit is fixedly set on the top cover plate of the reaction pool 8. The lifting unit is a telescopic structure such as a vertically arranged electric telescopic rod or a hydraulic telescopic rod. The translation unit is laterally fixed on the top of the lifting unit. The lifting unit can control the height position adjustment of the translation unit. The translation unit includes a slide rail and a telescopic structure laterally arranged in the slide rail. The second support arm 15 is slidably set in the slide rail. One end of the telescopic structure is fixedly connected to the end of the slide rail, and the other end of the telescopic structure is fixedly connected to the second support arm 15, so that the second support arm 15 can be driven to reciprocate laterally by the telescopic structure, and then the second support arm 15 is used to drive the measuring cup 3 to move laterally.

[0037] It is understandable that in actual use, the second support arm 15 can also be directly set to a telescopic arm structure that can be freely extended and retracted laterally by electric control. No excessive restrictions are made here, as long as the second support arm 15 can be used to drive the measuring cup 3 to move laterally.

[0038] The lifting and translation mechanism 6 is located on the side of the rotating mechanism 5 away from the dosing tube. The electric-controlled valve 4, the rotating mechanism 5 and the lifting and translation mechanism 6 are all connected to the controller 7 through wires. The controller 7 is a PLC controller, which can coordinate the working cooperation between the electric-controlled valve 4, the control rotating mechanism 5 and the lifting and translation mechanism 6 through the controller 7.

[0039] A second slot is provided at one end of the second support arm 15 close to the rotating mechanism 5. The second support arm 15 cooperates with the measuring cup 3 through the second slot to remove the measuring cup 3 from the first support arm 10. The second slot vertically penetrates the second support arm 15, and one end of the second slot is open.

[0040] The measuring cup 3 is a structure with upper and lower openings. Specifically, the top of the measuring cup 3 is open, and a flange is provided on the top of the measuring cup 3. The outer diameter of the flange is greater than the width of the first slot 16, so that the flange can be used to support the measuring cup 3, so that the measuring cup 3 can be vertically inserted into the first slot 16 without falling; the bottom of the measuring cup 3 is a round bottom structure, and the outer diameter of the bottom of the measuring cup 3 is greater than the width of the second slot. A liquid outlet pipe is fixedly provided at the center position of the bottom of the measuring cup 3, and the liquid outlet pipe is connected to the inside of the measuring cup 3. The liquid outlet pipe is a rigid pipe structure for discharging the liquid medicine. The outer diameter of the liquid outlet pipe is larger than the width of the second slot. The diameter of the ball 12 is smaller than the width of the second slot. A ball 12 is arranged in the measuring cup 3. The ball 12 is a rubber ball, and the diameter of the ball 12 is larger than the inner diameter of the liquid outlet pipe. The ball 12 can block the liquid outlet pipe under the action of gravity. A limiting portion 13 is fixedly arranged on the outer wall of the liquid outlet pipe along its circumferential direction. The limiting portion 13 is a plate-like structure. There is a space between the limiting portion 13 and the bottom of the measuring cup 3 to allow the second support arm 15 to be inserted, so that the second support arm 15 can be used to support the bottom of the measuring cup 3, and the measuring cup 3 is separated from the first support arm 10 by lifting and moving the measuring cup 3 laterally.

[0041] A cup bottom opening unit 11 is fixedly provided on the side wall of the lifting unit of the lifting and translation mechanism 6 close to the rotating mechanism 5. The cup bottom opening unit 11 is located just above the dosing port 9 and is used to control the opening and closing of the liquid outlet pipe at the bottom of the metering cup 3.

[0042] like Figure 4 As shown, the cup bottom opening unit 11 includes a guide body 17, which is an inverted conical structure. The top diameter of the guide body 17 is smaller than its bottom. The bottom of the guide body 17 is fixedly connected to the lifting unit side wall of the lifting and translation mechanism 6 through a connecting rod, and the guide body 17 is located directly below the second support arm 15. The top diameter of the guide body 17 is smaller than the inner diameter of the liquid outlet pipe at the bottom of the measuring cup 3, so that the top of the guide body 17 can be inserted into the measuring cup 3 from the bottom to push the ball 12 to open the liquid outlet pipe. The liquid medicine in the measuring cup 3 is discharged through the liquid outlet pipe, and under the guidance of the guide body 17, it is evenly dispersed and flows around, so that the liquid medicine is evenly added into the reaction tank 8, thereby improving the sewage treatment efficiency and effect. In order to achieve a better diversion effect and avoid the liquid medicine from flowing in strands due to the influence of viscosity, surface tension and density, a plurality of guide grooves 14 are provided on the side wall of the guide body 17 at intervals along its circumference, and the guide grooves 14 extend along the axial direction of the outer wall of the guide body 17 to play the role of diversion and diversion, thereby ensuring the uniformity of the addition of the liquid medicine.

[0043] A support groove 18 is provided at the top of the guide body 17. The support groove 18 is a circular groove structure for supporting and limiting the ball 12. When the guide body 17 is used to push the ball 12 upward, the ball 12 can move vertically without shifting to one side, thereby avoiding the influence of the ball 12 on the uniform flow of the medicine to the corresponding guide groove 14, thereby ensuring the uniform outflow and discharge of the medicine.

[0044] It should be noted that the inner diameter of the support groove 18 is slightly smaller than the outer diameter of the ball 12, so that while supporting the ball 12, the bottom of the ball 12 can be used to shield the support groove 18 to avoid the medicine remaining in the support groove 18 and ensure the accuracy of dosing.

[0045] Example 2

[0046] In another typical embodiment of the present invention, a sewage treatment method is proposed, which uses the sewage treatment device mentioned in Example 1, as follows:

[0047] The dosing pump 2 pumps the medicine in the medicine storage tank 1 to the metering cup 3 on the rotating mechanism 5 through the dosing pipe. Specifically, a first metering cup and a second metering cup are respectively installed at both ends of the first support arm 10 of the rotating mechanism 5, wherein the first metering cup is located directly below the mouth of the dosing pipe, and the second metering cup is close to the lifting and translation mechanism 6;

[0048] The dosing pump 2 first adds medicine into the first metering cup through the dosing tube. After the specified amount of medicine is added, the electric control valve 4 is closed, and the first support arm 10 rotates around the axis, so that the second metering cup is located directly below the mouth of the dosing tube, and the first metering cup is close to the lifting and translation mechanism 6. The second support arm 15 moves horizontally to the bottom of the first metering cup, and the second support arm 15 lifts the first metering cup upward and resets horizontally to drive the first metering cup to separate from the first support arm 10;

[0049] When the second support arm 15 drives the first measuring cup to reset horizontally, the first measuring cup is located directly above the cup bottom opening unit 11, and the second support arm 15 drives the first measuring cup to descend, so that the top of the guide body 17 is inserted into the first measuring cup, so as to push the ball 12 in the first measuring cup upward, open the liquid outlet pipe at the bottom of the first measuring cup, and the liquid medicine in the first measuring cup flows evenly into the reaction pool 8 under the guiding effect of the guide body 17;

[0050] When the amount of liquid medicine in the first metering cup is less than the amount of liquid medicine required for sewage treatment, during the process of adding medicine from the first metering cup to the reaction tank 8, the electric control valve 4 is opened, and medicine is added to the second metering cup through the dosing tube, and the amount of added medicine is the actual required amount of liquid medicine. After the first metering cup is added with medicine, the second support arm 15 reinstalls the first metering cup onto the first support arm 10, and the first support arm 10 drives the first metering cup and the second metering cup to exchange positions, and the second support arm 15 removes the second metering cup from the first support arm 10, and the second support arm 15 drives the second metering cup to move toward the cup bottom opening unit 11, and uses the cup bottom opening unit 11 to open the bottom of the second metering cup, and add the liquid medicine in the second metering cup into the reaction tank 8. After the liquid medicine in the second metering cup is added, the second support arm 15 reinstalls the second metering cup onto the first support arm 10.

[0051] It can be understood that when the amount of medicine in the second measuring cup still does not meet the requirements, the above operation is repeated so that the first measuring cup and the second measuring cup are added in turn, and the corresponding measuring cup 3 is replenished during the dosing process until the amount of medicine added in the reaction pool 8 meets the requirements.

[0052] Through the above operation, the time interval between the divided dosing can be shortened, and while ensuring that the dosage meets the requirements, the dosing efficiency is improved to ensure the effect and quality of sewage treatment.

[0053] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sewage treatment device, comprising: A reaction pool (8), characterized in that a cover plate is provided on the top of the reaction pool (8), a drug adding port (9) is provided at the center of the cover plate, a rotating mechanism (5) and a lifting and translation mechanism (6) are fixedly provided on the cover plate, the rotating mechanism (5) comprises a first support arm (10) which is electrically driven to rotate around an axis, a measuring cup (3) is respectively inserted at both ends of the first support arm (10), a drug replenishing mechanism for replenishing drugs to the measuring cup (3) is provided on one side of the reaction pool (8), the lifting and translation mechanism (6) comprises a second support arm (15) which can be moved horizontally and lifted, the second support arm (15) is used to remove the measuring cup (3) from the first support arm (10), a cup bottom opening unit (11) is provided directly above the drug adding port (9), and the cup bottom opening unit (11) is fixedly provided on the side wall of the lifting and translation mechanism (6); Two ends of the first support arm (10) are provided with first slots (16), and one end of the second support arm (15) close to the rotating mechanism (5) is provided with a second slot; A spherical ball (12) is arranged inside the measuring cup (3); a flange is fixedly arranged at the top opening of the measuring cup (3); the bottom of the measuring cup (3) is round and has an outer diameter greater than the width of the second slot; a liquid outlet pipe is fixedly arranged at the center of the bottom of the measuring cup (3); the outer diameter of the liquid outlet pipe is smaller than the width of the second slot; and the diameter of the spherical ball (12) is greater than the inner diameter of the liquid outlet pipe; A limiting portion (13) is fixedly provided on the outer wall of the liquid outlet pipe along its circumferential direction, and a space is provided between the limiting portion (13) and the bottom of the measuring cup (3) to allow the second support arm (15) to be inserted.

2. The sewage treatment device according to claim 1, characterized in that: The first slot (16) and the second slot vertically penetrate the corresponding first support arm (10) and the second support arm (15), and one end of the first slot (16) and the second slot is open.

3. The sewage treatment device according to claim 1, characterized in that: The outer diameter of the flange is greater than the width of the first slot (16).

4. The sewage treatment device according to claim 1, characterized in that: The cup bottom opening unit (11) comprises a guide body (17), the guide body (17) is an inverted conical structure, the bottom of the guide body (17) is fixedly connected to the side wall of the lifting and translation mechanism (6) via a connecting rod, and the top diameter of the guide body (17) is smaller than the inner diameter of the liquid outlet pipe.

5. The sewage treatment device according to claim 4, characterized in that: A plurality of guide grooves (14) are provided on the side wall of the guide body (17) at intervals along its circumferential direction, and the guide grooves (14) extend axially along the outer wall of the guide body (17).

6. The sewage treatment device according to claim 4, characterized in that: A support groove (18) is provided on the top of the flow guide (17), and the support groove (18) is a circular groove structure.

7. A sewage treatment method, characterized in that: The sewage treatment device according to any one of claims 1 to 6 is used, specifically as follows: The medicine replenishing mechanism adds medicine liquid into the measuring cup (3) at one end of the first support arm (10). After a specified amount of medicine liquid is added, the first support arm (10) rotates around an axis so that the empty measuring cup (3) on the first support arm (10) and the measuring cup (3) containing medicine liquid are exchanged in position, and the second support arm (15) moves horizontally to just below the measuring cup (3) containing medicine liquid, and the second support arm (15) lifts the measuring cup (3) containing medicine liquid upward and resets it horizontally; When the second support arm (15) is laterally reset, the second support arm (15) drives the measuring cup (3) containing the liquid medicine to descend, so that the top of the guide body (17) is inserted into the measuring cup (3) and pushes the ball (12) upward, and the liquid medicine flows evenly into the reaction pool (8) under the guidance of the guide body (17).

8. The sewage treatment method according to claim 7, characterized in that: When the amount of liquid medicine in a measuring cup (3) is less than the amount of liquid medicine required for sewage treatment, during the process of adding medicine into the reaction tank (8), the medicine-adding mechanism adds medicine into the empty measuring cup (3) on the first support arm (10), and the amount of medicine added is the amount of liquid medicine actually required. After the metering cup (3) on the second support arm (15) has finished adding medicine, the second support arm (15) reinstalls the metering cup (3) onto the first support arm (10), and the first support arm (10) drives the two metering cups (3) to exchange positions. The second support arm (15) removes the metering cup (3) containing liquid medicine from the first support arm (10) and moves to the top of the medicine-adding port (9) to add medicine.

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