Ammonia nitrogen wastewater treatment system

Abstract

The present application discloses a treatment system for ammonia nitrogen wastewater, which includes a sedimentation filter unit, an ammonia nitrogen adsorption unit, a proportional pump unit, a sodium hypochlorite generation unit, a salt dissolving unit, a pickling unit, a buffer unit, a neutralization unit, a regeneration circulation pump, and a rectification and control unit. The sedimentation filter unit is connected to the ammonia nitrogen adsorption unit, and the wastewater is discharged after being treated by the sedimentation filter unit and the ammonia nitrogen adsorption unit. The ammonia nitrogen adsorption unit is provided with a wastewater inlet, a wastewater outlet, a recycled water inlet and a recycled water outlet. The wastewater inlet is connected to the sedimentation filter unit, and the wastewater outlet is connected to an external discharge pipe; the sedimentation filter unit includes several groups of triple boxes, filters, and reverse osmosis membrane groups. One end of the triple box unit is connected to the wastewater inlet, and the other end is connected to the wastewater inlet of the ammonia nitrogen adsorption unit. The above system not only solves the problem of sewage discharge, but also degrades the ammonia nitrogen absorbed in the system into green gas, and the brine in the system can be recycled, thereby effectively reducing the cost of wastewater treatment.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to a treatment system for ammonia nitrogen wastewater. Background Art

[0002] Ammonia nitrogen is nitrogen present in water in the form of free ammonia (NH3) and ammonium ions. Ammonia nitrogen in water comes from a variety of sources, including domestic sewage and landfill leachate, as well as industrial wastewater discharges from steel, oil refining, fertilizers, leather tanning, petrochemicals, glass manufacturing, and feed production. Ammonia nitrogen is a major factor in eutrophication of water bodies, causing algae and microbial growth, a sharp drop in dissolved oxygen levels, and the resulting oxygen-deficient death of fish and other aquatic organisms, seriously impacting water quality.

[0003] Currently, ammonia nitrogen wastewater is usually treated by biological treatment or finished sodium hypochlorite oxidation method. The problems are as follows: the transportation cost of finished sodium hypochlorite is high and the labor intensity is high; after adding the drug, the emission standards are not met due to insufficient or excessive concentration. In response to the above problems, no relevant solutions have been proposed. Summary of the Invention

[0004] In order to improve the problem of not meeting emission standards due to insufficient or excessive dosing concentration after dosing, the present application provides a treatment system for ammonia nitrogen wastewater.

[0005] The present application provides an ammonia nitrogen wastewater treatment system that adopts the following technical solutions:

[0006] A system for treating ammonia nitrogen wastewater, comprising a sedimentation filter unit, an ammonia nitrogen adsorption unit, a proportional pump unit, a sodium hypochlorite generation unit, a salt dissolving unit, a pickling unit, a buffer unit, a neutralization unit, a regeneration circulation pump, and a rectification and control unit, wherein the sedimentation filter unit is connected to the ammonia nitrogen adsorption unit, and the wastewater is discharged after being treated by the sedimentation filter unit and the ammonia nitrogen adsorption unit, and the ammonia nitrogen adsorption unit is provided with a wastewater inlet, a wastewater outlet, a regenerated water inlet, and a regenerated water outlet, wherein the wastewater inlet is connected to the sedimentation filter unit, and the wastewater outlet is connected to an external discharge pipe;

[0007] The sedimentation filtration unit comprises several sets of triple boxes, filters, and reverse osmosis membrane groups, one end of the triple box unit is connected to the wastewater inlet, and the other end is connected to the wastewater inlet of the ammonia nitrogen adsorption unit;

[0008] One of the triple boxes is provided with a regulating device for flocculation and sedimentation;

[0009] The regulating device includes a bracket, a stirring mechanism provided on the bracket, and a detection mechanism for detecting the turbidity of the solution;

[0010] The stirring mechanism includes a stirring motor, a stirring rod, a plurality of stirring blades arranged on the outer wall of the stirring rod, and a mixing component arranged on the stirring blades. The stirring rod is rotatably arranged on the bracket, and the stirring motor is used to control the rotation of the stirring rod;

[0011] The plurality of stirring blades are divided into a plurality of groups along the vertical direction, and the mixing assembly is arranged on any one of the stirring blades in each group of the stirring rods.

[0012] Optionally, the mixing assembly includes a mixing rod rotatably arranged on the stirring blade, a transmission part for realizing the self-rotation of the mixing rod, and a diffusion part arranged in the mixing rod, the diffusion part is used to increase the contact area between the mixing rod and the solution, and the mixing rod is vertically arranged.

[0013] Optionally, the diffusion part includes a diffusion rod, a diffusion leaf, a first electromagnet and an acceleration group for accelerating the diffusion rod to slide out of the mixing rod. The mixing rod is provided with a sliding hole for the diffusion rod to slide. The side wall of the diffusion rod is provided with multiple accommodating cavities. The diffusion leaf is hingedly provided in the accommodating cavity. The inner wall of the sliding hole is provided with a mounting hole. The first electromagnet is installed in the mounting hole. The first electromagnet is used to adsorb the top side wall of the diffusion rod.

[0014] Optionally, the acceleration group includes a first spring, a storage chamber and an acceleration chamber, the two ends of the first spring are fixedly connected to the inner wall of the end of the sliding hole and the top of the diffusion rod respectively, the storage chamber contains water, the acceleration chamber is arranged above the storage chamber and the acceleration chamber contains edible salt, a connecting pipe is connected between the acceleration chamber and the storage chamber, an electromagnetic valve is provided on the connecting pipe, the storage chamber is arranged in the diffusion rod, and the acceleration chamber is arranged in the mixing rod.

[0015] Optionally, the transmission part includes a ring tooth, a gear and a control group for realizing unidirectional rotation of the mixing rod, the ring tooth is fixed on the bracket, the gear is connected to the top of the mixing rod through the control group, and the gear is meshed with the ring tooth.

[0016] Optionally, the control group includes a driving disk, a rotating disk, a pawl and an elastic member, the driving disk is coaxially fixed with the gear, the rotating disk is fixedly connected to the top of the mixing rod, the pawl is rotatably set on the driving disk, the inner ring of the rotating disk is provided with a ratchet groove, the pawl is inserted into the ratchet groove, and the elastic member is used to enable the pawl to swing toward the ratchet groove.

[0017] Optionally, the detection mechanism includes a detection frame arranged on the bracket, a plurality of detection rods rotatably arranged on the detection frame, a detection cylinder arranged up and down on the detection rod, a light source, a light shielding plate, a camera, a discharge component for discharging the solution in the detection cylinder, and a driving component for controlling the rotation of the plurality of detection rods together, the detection cylinder is provided with an inlet near its top side wall, and the inlet is provided with a second solenoid valve, the light source and the light shielding plate are respectively provided on two opposite side walls of the detection frame, and the camera is provided above the light source.

[0018] Optionally, the blanking assembly includes a blanking plate, a blanking motor and a cleaning part for cleaning the blanking plate. An opening is provided at the bottom of the detection cylinder. The blanking plate is rotatably provided at the opening and the blanking motor controls the rotation of the blanking plate. The rotation axis of the blanking plate and the opening is located on the symmetrical plane of the blanking plate.

[0019] Optionally, the cleaning part includes a cleaning rod slidably arranged on the detection rod, a cleaning piece movably arranged on the cleaning rod, and a traction group for pulling the cleaning piece, and the movement direction of the cleaning piece is perpendicular to the rotation axis direction of the blanking plate.

[0020] Optionally, the drive assembly includes multiple chains, drive motors and sprockets, the multiple sprockets are respectively fixed on the top of the multiple detection rods, the chain is meshed with the multiple sprockets, and the drive motor controls the rotation of the sprocket located at either end.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. When the ammonia nitrogen adsorption unit is saturated, the regeneration circulation pump in the system detects the adsorption saturation signal and starts. The electric valve at the outlet of the salt dissolving unit opens, the sodium hypochlorite brine inlet opens, the electric valves at the acid inlet and return outlet close, the sodium hypochlorite outlet opens, and the hydrogen exhaust fan starts. The regeneration circulation pump draws a certain concentration of brine from the salt dissolving unit into the sodium hypochlorite generation unit. After electrolysis in the generation unit, a high-concentration sodium hypochlorite solution and hydrogen enter the buffer unit. The buffer unit detects the outlet pH and ammonia nitrogen concentration. When the pH is less than 6, the alkali solution inlet electric valve and high-precision electric drive proportional pump in the proportional pump unit are opened. After the mixed liquid from the proportional pump unit enters the ammonia nitrogen adsorption unit, it degrades some of the ammonia nitrogen in the adsorption unit and regenerates some ammonia nitrogen, which enters the salt dissolving unit. The salt dissolving unit conducts a test. If the pH is greater than 9, the feedback is fed back to the control system, and the proportional pump ratio is adjusted. This process is repeated. When the ammonia nitrogen concentration in the salt dissolving unit drops to zero, the regeneration process switches to another group. At this time, the tank of the dim adsorption unit is in a standby state.

[0023] 2. First, the movement paths of the stirring blade and the detection cylinder need to be staggered. After the detection cylinder is extended to the designated position, the second solenoid valve on the inlet is opened to allow the solution to enter the detection cylinder. At this time, the detection cylinder is pulled back to its initial position to complete the material removal work. When the drive motor controls the rotation of one of the sprockets, the multiple detection rods rotate together under the action of the chain, and the solution in the detection cylinder begins to mix. After a period of time, the turbidity of the solution in the detection cylinder tends to stabilize. The light source is turned on, and the turbidity of the solutions in multiple detection cylinders is compared and analyzed by the camera. If the turbidity in one detection cylinder is the highest and the difference between the turbidity in the other detection cylinders is large, it is necessary to strengthen the stirring of the solution in the corresponding position in the detection cylinder, which is the stirring of the diffusion blade.

[0024] 3. The first electromagnet is powered off. Under the elastic force of the first spring, the diffusion rod is pushed out by the elastic force of the spring. Since there is resistance to the diffusion rod in the solution, in order to accelerate the diffusion rod to slide out of the mixing rod, the solenoid valve on the connecting pipe is opened at this time, and the edible salt in the acceleration chamber enters the storage chamber through the connecting pipe. The edible salt can increase the weight of the storage chamber without increasing the volume of water in the storage chamber. Therefore, under the elastic force of the first spring and the weighting of the diffusion rod, the diffusion rod is accelerated to slide out of the sliding hole. When the diffusion rod is outside the mixing rod, under the elastic force of the torsion spring, the diffusion leaf swings out of the accommodating chamber until the diffusion leaf swings to a horizontal state. The diffusion leaf stirs the space between the two adjacent stirring leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a process flow chart of an embodiment of the present application;

[0026] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0027] Figure 3 is a schematic diagram of a mixing component according to an embodiment of the present application;

[0028] Figure 4 is a schematic diagram of a control group of an embodiment of the present application;

[0029] Figure 5 is a schematic diagram of a detection mechanism according to an embodiment of the present application;

[0030] Figure 6 yes Figure 5 Enlarged schematic diagram of part A.

[0031] Reference numerals: 10, sedimentation filtration unit; 20, ammonia nitrogen adsorption unit; 40, proportional pump unit; 70, sodium hypochlorite generation unit; 90, salt dissolving unit; 60, pickling unit; 50, buffer unit; 30, neutralization unit; 80, regeneration circulation pump; 100, rectification and control unit; 50a, hydrogen exhaust fan; 50b, online pH analyzer; 50c, online ammonia nitrogen analyzer; 14, bracket; 15, stirring motor; 16, stirring rod; 17, stirring blade; 18, diffusion rod; 19, diffusion blade; 21, first electromagnet ; 22. Slide hole; 23. Accommodating chamber; 24. First spring; 25. Storage chamber; 26. Acceleration chamber; 27. Connecting tube; 28. Ring gear; 29. ​​Gear; 31. Drive disk; 32. Rotating disk; 33. Ratchet; 34. Elastic member; 35. Ratchet groove; 36. Detection frame; 37. Detection rod; 38. Detection tube; 39. Light source; 41. Sunshade; 42. Camera; 43. Unloading plate; 44. Unloading motor; 45. Cleaning rod; 46. Cleaning part; 47. Chain; 48. Drive motor; 49. Sprocket; 51. Mixing rod. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-6 This application is described in further detail.

[0033] The present application embodiment discloses a treatment system for ammonia nitrogen wastewater. Figures 1-6 A system for treating ammonia nitrogen wastewater includes a sedimentation filter unit 10, an ammonia nitrogen adsorption unit 20, a proportional pump unit 40, a sodium hypochlorite generation unit 70, a salt dissolving unit 90, a pickling unit 60, a buffer unit 50, a neutralization unit 30, a regeneration circulation pump 80, and a rectification and control unit 100. The sedimentation filter unit 10 is connected to the ammonia nitrogen adsorption unit 20. The wastewater is discharged after being treated by the sedimentation filter unit 10 and the ammonia nitrogen adsorption unit 20. The ammonia nitrogen adsorption unit 20 is provided with a wastewater inlet, a wastewater outlet, a regenerated water inlet, and a regenerated water outlet. The wastewater inlet is connected to the sedimentation filter unit 10, and the wastewater outlet is connected to an external discharge pipe.

[0034] The sedimentation and filtration unit 10 includes several groups of triple boxes, filters, and reverse osmosis membrane groups. One end of the triple box unit is connected to the wastewater inlet, and the other end is connected to the wastewater inlet of the ammonia nitrogen adsorption unit 20, that is, after preliminary flocculation, sedimentation, filtration and reverse osmosis, it is connected to the wastewater inlet of the ammonia nitrogen adsorption unit 20; the ammonia nitrogen adsorption unit 20 includes several groups of adsorption tanks and supporting pipelines connected in parallel with water channels. The wastewater preliminarily treated by the sedimentation and filtration unit 10 enters a group of adsorption tanks through the wastewater inlet for ammonia nitrogen adsorption. After adsorption, the water quality meets the discharge standard and is discharged through the wastewater outlet. After the adsorption tank is saturated, it can automatically switch to other groups of adsorption tanks; after a group of adsorption tanks in the adsorption unit is saturated, it is regenerated, and its regeneration inlet is connected to the mixed liquid outlet of the proportional pump, and its regeneration outlet is connected to the inlet of the salt dissolving unit 90.

[0035] The salt dissolving unit 90 is equipped with an online ammonia nitrogen analyzer and an online pH meter. The unit 90 also features a liquid inlet at the top and a liquid outlet at the bottom. The outlet is connected to the inlet of a regeneration pump 80, which in turn is connected to the outlet of the salt dissolving unit 90. The outlet of the regeneration pump 80 is connected to the brine inlet of the sodium hypochlorite generator 70. Brine flows from the outlet of the salt dissolving unit 90, is pressurized by the regeneration pump 80, and then reaches the sodium hypochlorite generator 70 through a pipeline. The regeneration pump 80 ensures the equipment's circulation flow rate. The sodium hypochlorite generator 70 consists of several electrolytic cell assemblies, pipelines, and valves in a series configuration for both the water and electrical circuits. The sodium hypochlorite generator 70 is also equipped with an acid inlet, an acid return port, a brine inlet, a sodium hypochlorite outlet, and a sewage outlet. Electric valves are installed at all pipe openings, including a pressure transmitter installed at the brine inlet and a temperature transmitter installed at the sodium hypochlorite outlet, which are used to monitor the brine inlet pressure and the sodium hypochlorite outlet temperature of the sodium hypochlorite generating unit 70. The sodium hypochlorite outlet is connected to the inlet of the buffer unit 50, the brine inlet is connected to the outlet of the regeneration circulation pump 80, and the acid inlet and acid return port are connected to the acid outlet and acid inlet of the pickling unit 60 respectively.

[0036] The electrolytic cell assembly consists of an electrode assembly, a cation exchange membrane, and an electrolytic cell body. The anode of the electrode assembly is connected to the positive terminal of the rectifier control unit 100, and the cathode of the electrode assembly is connected to the negative terminal of the rectifier control cabinet 100. After electrolysis, a high-concentration sodium hypochlorite solution is produced and fed into the buffer unit through the sodium hypochlorite unit outlet. The pickling unit comprises a pickling tank, a pickling pump, and pipeline valves, with both the inlet and outlet valves being electrically operated. The buffer unit 50 is equipped with a hydrogen exhaust blower 50a, an online pH analyzer 50b, and an online ammonia nitrogen analyzer 50c. A hydrogen exhaust port is located at the top of the buffer unit, along with an air inlet and a sodium hypochlorite inlet at the top and a sodium hypochlorite outlet at the bottom. A hydrogen exhaust blower 50a, installed at the air inlet, draws air into the system to dilute the hydrogen generated before discharging through the top hydrogen exhaust port. The sodium hypochlorite inlet of the buffer unit 50 is connected to the sodium hypochlorite outlet of the sodium hypochlorite generating unit 70 , and the sodium hypochlorite outlet of the buffer unit 50 is connected to the sodium hypochlorite inlet of the proportional pump unit 40 .

[0037] The proportional pump unit 40 consists of several high-precision electrically driven proportional pumps, as well as piping and valves. The proportional pump unit is equipped with an inlet for sodium hypochlorite, an inlet for alkali solution, and an outlet for the mixed solution. Each inlet and outlet is equipped with an electric valve. The hypochlorite inlet of the proportional pump unit 40 is connected to the sodium hypochlorite outlet of the buffer unit 50. The alkali solution inlet of the proportional pump is connected to the outlet of the neutralization unit 30. The mixed solution outlet is connected to the regenerated water inlet of the ammonia nitrogen adsorption unit 20. The neutralization unit 30 consists of several alkali storage tanks and various piping. Each alkali storage tank stores a certain concentration of alkali solution or sodium carbonate solution. The neutralization unit 30 is equipped with an alkali solution outlet.

[0038] When the ammonia nitrogen adsorption unit 20 reaches saturation, the regeneration circulation pump 80 in the system detects the adsorption saturation signal and starts. The electric valve at the outlet of the salt dissolving unit 90 opens, the sodium hypochlorite brine inlet opens, the electric valves at the acid inlet and the acid return outlet close, the sodium hypochlorite outlet opens, and the hydrogen exhaust fan starts. The regeneration circulation pump 80 draws a certain concentration of brine from the salt dissolving unit 90 into the sodium hypochlorite generation unit 70. After electrolysis in the sodium hypochlorite generation unit 70, a high-concentration sodium hypochlorite solution and hydrogen are generated and enter the buffer unit 50. The buffer unit 50 detects the outlet pH and ammonia nitrogen concentration. When the pH is less than 6, the electric valve at the alkali solution inlet and the high-precision electric drive proportional pump in the proportional pump unit 40 are opened. After the mixed liquid of the proportional pump unit 40 enters the ammonia nitrogen adsorption unit 10, part of the ammonia nitrogen in the adsorption unit is degraded and part of the ammonia nitrogen is regenerated and enters the salt dissolving unit 90. The salt dissolving unit 90 performs detection. If the pH is greater than 9, it is fed back to the control system to adjust the proportional pump ratio and cycle this process. When the ammonia nitrogen concentration in the salt dissolving unit 90 drops to zero, it switches to other groups of regeneration processes. At this time, the ammonia nitrogen adsorption unit 20 tank is in a standby state.

[0039] One of the triple boxes is provided with a regulating device for flocculation and sedimentation; the regulating device includes a bracket 14, a stirring mechanism provided on the bracket 14, and a detection mechanism for detecting the turbidity of the solution; as the flocculant is added and the stirring mechanism stirs the solution, the turbidity of the solution gradually decreases and maintains a certain level, at which point it can be proved that the flocculation work has been completed. The detection mechanism is used to compare the turbidity of the solution at different stages and different depths, and then determine whether the flocculation of the solution is complete. In particular, when the turbidity at different depths in the same stage is different, the position with high turbidity is stirred separately to improve the efficiency of flocculation.

[0040] The stirring mechanism includes a stirring motor 15, a stirring rod 16, a plurality of stirring blades 17 arranged on the outer wall of the stirring rod 16, and a mixing component arranged on the stirring blade 17. The stirring rod 16 is rotatably arranged on the bracket 14, and the stirring motor 15 is used to control the rotation of the stirring rod 16; the plurality of stirring blades 17 are arranged in three groups in this embodiment, that is, all the stirring blades 17 on each horizontal plane along the vertical direction are arranged as one group. When the stirring blades 17 stir the solution added with the flocculant, the flocculation process is accelerated.

[0041] The mixing assembly is arranged on any stirring blade 17 in each group of stirring rods 16. The mixing assembly includes a mixing rod 51 rotatably arranged on the stirring blade 17, a transmission part for realizing the self-rotation of the mixing rod 51, and a diffusion part arranged in the mixing rod 51. The diffusion part is used to increase the contact area between the mixing rod 51 and the solution. The mixing rod 51 is vertically arranged, and the length of the mixing rod 51 is smaller than the distance between the two groups of stirring blades 17. The diffusion part includes a diffusion rod 18, a diffusion blade 19, a first electromagnet 21, and a device for accelerating the diffusion rod 18 to slide out of the mixing rod 51. Acceleration group, the mixing rod 51 is provided with a sliding hole 22 for the diffusion rod 18 to slide, the side wall of the diffusion rod 18 is provided with multiple accommodating cavities 23, the diffusion leaf 19 is hingedly provided in the accommodating cavity 23, the inner wall of the sliding hole 22 is provided with a mounting hole, the first electromagnet 21 is installed in the mounting hole, the first electromagnet 21 is used to adsorb the top side wall of the diffusion rod 18, the length of the diffusion rod 18 is also smaller than the distance between the two adjacent groups of stirring leaves 17, in the initial state, the first electromagnet 21 adsorbs the diffusion rod 18, and at this time the bottom of the diffusion rod 18 is also located in the sliding hole 22.

[0042] One end of the diffusion blade 19 is hinged to the inner wall of the accommodating chamber 23, and the axis of the hinge is perpendicular to the axis of the diffusion rod 18. The diffusion blade 19 is connected to the inner wall of the accommodating chamber 23 by a torsion spring. When the diffusion blade 19 swings to a horizontal state, the torsion spring is in its original state. When the diffusion rod 18 is located inside the mixing rod 51, the diffusion blade 19 is in a vertical state and located inside the accommodating chamber 23. At this time, the torsion spring is in a deformed state. When the diffusion rod 18 is located outside the mixing rod 51, under the elastic force of the torsion spring, the diffusion blade 19 swings out from the accommodating chamber 23 until the diffusion blade 19 swings to a horizontal state. The diffusion blade 19 stirs the space between two adjacent stirring blades 17. The diffusion rod 18 needs to be retracted into the mixing rod 51 mainly to reduce the resistance encountered by the stirring rod 16 and the stirring blade 17 during normal stirring.

[0043] The acceleration group includes a first spring 24, a storage chamber 25 and an acceleration chamber 26. The two ends of the first spring 24 are fixedly connected to the inner wall of the end of the slide hole 22 and the top of the diffusion rod 18 respectively. There is water in the storage chamber 25. The acceleration chamber 26 is arranged above the storage chamber 25 and there is edible salt in the acceleration chamber 26. A connecting pipe 27 is connected between the acceleration chamber 26 and the storage chamber 25. An electromagnetic valve is provided on the connecting pipe 27. The storage chamber 25 is arranged in the diffusion rod 18, and the acceleration chamber 26 is arranged in the mixing rod 51. The connecting pipe 27 is set as a hose, and the length of the connecting pipe 27 is sufficient to support the normal sliding of the diffusion rod 18. When the diffusion rod 18 is required to slide out from the mixing rod When the mixing rod 51 slides out, the first electromagnet 21 is powered off. Under the elastic force of the first spring 24, the diffusion rod 18 is pushed out by the elastic force of the spring. Since there is resistance to the diffusion rod 18 in the solution, in order to accelerate the diffusion rod 18 to slide out from the mixing rod 51, the solenoid valve on the connecting pipe 27 is opened at this time, and the edible salt in the acceleration chamber 26 enters the storage chamber 25 through the connecting pipe 27. The edible salt can add weight to the storage chamber 25 without increasing the volume of water in the storage chamber 25. Therefore, under the elastic force of the first spring 24 and the weighting of the diffusion rod 18, the effect of accelerating the diffusion rod 18 to slide out from the sliding hole 22 is achieved. It should be noted that solutions with different components and solutions in different flocculation states have different resistance to the diffusion rod 18 when sliding out. Therefore, the weight of the diffusion rod 18 cannot be controlled in advance. Therefore, only when the diffusion rod 18 is blocked or slides out slowly, it is necessary to add weight to the diffusion rod 18 to accelerate its sliding out from the sliding hole 22.

[0044] The transmission part includes a ring tooth 28, a gear 29 and a control group for realizing unidirectional rotation of the mixing rod 51. The ring tooth 28 is fixed on the bracket 14, and the gear 29 is connected to the top of the mixing rod 51 through the control group. The gear 29 is meshed with the ring tooth 28. In this embodiment, the number of ring teeth 28 is the same as the number of mixing rods 51, that is, the number of ring teeth 28 is related to the number of groups of stirring blades 17. The ring teeth 28 surround the stirring blades 17 and the stirring rod 16, and the gear 29 is also located inside the ring tooth 28; the control group includes a driving disk 31, a rotating disk 32, a pawl 33 and an elastic member 34. The driving disk 31 is coaxially fixed with the gear 29, the rotating disk 32 is fixedly connected to the top of the mixing rod 51, the pawl 33 is rotatably set on the driving disk 31, and the inner ring of the rotating disk 32 is provided with a ratchet groove 35. The ratchet 33 is inserted into the ratchet groove 35, and the elastic member 34 is used to realize the ratchet 33 swinging toward the ratchet groove 35.

[0045] The driving disc 31 is located inside the rotating disc 32. The bottom of the rotating disc 32 is connected to the mixing rod 51 through a plurality of support rods. In this embodiment, in order to consider the installation relationship, the top of the driving disc 31 is located above the rotating disc 32, that is, the driving disc 31 extends out of the rotating disc 32. The pawl 33 is hinged to the side wall of the driving disc 31, and the circumferential direction of the hinge is vertical. The elastic member 34 can be a spring. One end of the elastic member 34 is connected to the middle position of the pawl 33, and the other end is connected to the side wall of the driving disc 31. In this embodiment, only when the mixing When the mixing rod 16 rotates forward, the gear 29 starts to rotate under the action of the ring gear 28, and the gear 29 drives the driving disk 31 to rotate. Due to the cooperation between the pawl 33 and the ratchet groove 35, the rotating disk 32 starts to rotate, that is, the mixing rod 51 starts to rotate, the diffusion rod 18 rotates together, and the diffusion blade 19 starts to stir the designated area; when the stirring rod 16 is reversed, although the stirring rod 16 is also stirring, the driving disk 31 follows the gear 29, and the pawl 33 idles in the rotating disk 32. At this time, the mixing rod 51 cannot rotate.

[0046] The detection mechanism includes a detection frame 36 arranged on the bracket 14, a plurality of detection rods 37 rotatably arranged on the detection frame 36, a detection cylinder 38 lifted and lowered on the detection rod 37, a light source 39, a light shielding plate 41, a camera 42, a feeding assembly for realizing the discharge of the solution in the detection cylinder 38, and a driving assembly for controlling the rotation of the plurality of detection rods 37 together. The detection cylinder 38 is provided with an inlet near its top side wall, and the inlet is provided with a second solenoid valve. The light source 39 and the light shielding plate 41 are respectively provided on the two opposite side walls of the detection frame 36, the camera 42 is provided above the light source 39, the top end of the detection rod 37 is located above the detection frame 36, and the lifting and lowering of the detection cylinder 38 is realized by an electric push rod. In this embodiment, the detection cylinder 38 can be extended into To different positions in the solution, of course, the detection tube 38 also needs to extract and compare the solutions at the same position at different times, that is, in this embodiment, the turbidity comparison at the same position at different times is first judged to judge the flocculation process, and when the turbidity comparison of the solutions at different positions at the same time is performed, it can be known which position needs to be stirred emphatically to accelerate the flocculation process, that is, the diffusion rod 18 and the diffusion leaf 19 need to be stirred. Of course, in order to reduce the complexity of detection in this embodiment, the turbidity comparison analysis of the solutions at different positions at the same time is focused on, and then the solution at the position with the highest turbidity needs to be stirred more, that is, stirred by the diffusion leaf 19, and the diffusion rod 18 needs to slide out of the mixing rod 51.

[0047] Therefore, in this embodiment, the connection between the rotating disk 32 and the mixing rod 51 can also be that a rotating rod is fixedly connected to the bottom of the rotating disk 32, and the rotating rod and the mixing rod 51 are connected by multiple second electromagnets. When the diffusion leaves 19 at the corresponding position are not needed to rotate, the diffusion leaves 19 will not be released first. At the same time, the rotating rod and the mixing rod 51 are in a rotationally connected relationship. When the diffusion leaves 19 at the corresponding position need to be stirred, the diffusion leaves 19 are first controlled to slide out, and multiple second electromagnets adsorb the mixing rod 51, that is, the rotating rod and the mixing rod 51 are connected together, and at this time the mixing rod 51 can rotate together with the rotating rod.

[0048] First, the movement paths of the stirring blade 17 and the detection cylinder 38 need to be staggered. After the detection cylinder 38 is extended to the specified position, the second solenoid valve on the inlet is opened, and the solution enters the detection cylinder 38. At this time, the detection cylinder 38 is pulled back to the initial position to complete the material removal work.

[0049] The drive assembly includes a plurality of sprockets 49, a drive motor 48, and sprockets 49. The plurality of sprockets 49 are respectively fixed to the top of the plurality of detection rods 37. The chain 47 is meshed with the plurality of sprockets 49. The drive motor 48 controls the rotation of the sprockets 49 at either end. The chain 47 is meshed with the plurality of sprockets 49 simultaneously. When the drive motor 48 controls the rotation of one of the sprockets 49, under the driving action of the chain 47, of course, in this embodiment, a spare sprocket 49 is required on the detection frame 36 for the drive motor 48 to control the rotation of the plurality of detection rods 37. The solution in the detection cylinder 38 begins to be mixed. After a period of time, the turbidity of the solution in the detection cylinder 38 tends to be stable. The light source 39 is turned on, and the turbidity of the solution in the plurality of detection cylinders 38 is compared and analyzed by the camera 42. If the turbidity in one detection cylinder 38 is the highest and the difference between the turbidity in the other detection cylinders 38 is large, it is necessary to strengthen the stirring of the solution at the corresponding position in the detection cylinder 38, that is, the diffusion blade 19 starts stirring.

[0050] The blanking assembly includes a blanking plate 43, a blanking motor 44 and a cleaning part for cleaning the blanking plate 43. An opening is provided at the bottom of the detection cylinder 38. The blanking plate 43 is rotatably provided at the opening and the blanking motor 44 controls the rotation of the blanking plate 43. The rotation axis of the blanking plate 43 and the opening is located on the symmetrical plane of the blanking plate 43. When the blanking plate 43 is in a horizontal state, the opening of the detection cylinder 38 is closed. When the blanking plate 43 is in a vertical state, the opening of the detection cylinder 38 is opened, and the solution flows out of the detection cylinder 38. After flocculation and sedimentation, the flocs are deposited at the bottom of the detection cylinder 38. Therefore, after the solution flows out, the blanking plate 43 needs to be cleaned.

[0051] The cleaning part includes a cleaning rod 45 that is slidably arranged on the detection rod 37, a cleaning member 46 that is movably arranged on the cleaning rod 45, and a traction group for pulling the cleaning member 46. The movement direction of the cleaning member 46 is perpendicular to the rotation axis direction of the blanking plate 43. The cleaning rod 45 slides on the detection rod 37. The cleaning member 46 uses a sponge. The traction group includes two winding motors and two winding rollers. The winding rollers rotate on the cleaning rod 45. The winding motor is used to control the rotation of the winding rollers. The two winding motors and the two winding rollers are respectively located on both sides of the highest point of the cleaning rod 45, that is, two winding rollers. They are respectively located on both sides of the abutment position between the traction member and the blanking plate 43; when the blanking plate 43 needs to be cleaned, after the solution is released, the blanking plate 43 is controlled to continue to rotate until the side of the blanking plate 43 with flocs adhered to it rotates to face downward, and at this time, the cleaning rod 45 is controlled to move to the bottom of the blanking plate 43, and the cleaning member 46 contacts the blanking plate 43. As the cleaning rod 45 reciprocates, the cleaning effect of the blanking plate 43 can be completed. In this embodiment, the width dimension of the cleaning member 46 is set to be not less than the width dimension of the blanking plate 43 to ensure that the cleaning member 46 thoroughly cleans the blanking plate 43.

[0052] The implementation principle of the ammonia nitrogen wastewater treatment system of the embodiment of the present application is as follows: first, the movement paths of the stirring blade 17 and the detection cylinder 38 need to be staggered. After the detection cylinder 38 is extended to the specified position, the second solenoid valve on the inlet is opened, and the solution enters the detection cylinder 38. At this time, the detection cylinder 38 is pulled back to the initial position to complete the material removal work; when the driving motor 48 controls one of the sprockets 49 to rotate, under the driving action of the chain 47, multiple detection rods 37 rotate together, and the solution in the detection cylinder 38 begins to mix. After waiting for a period of time, the turbidity of the solution in the detection cylinder 38 tends to be stable, the light source 39 is turned on, and the turbidity of the solutions in the multiple detection cylinders 38 is compared and analyzed through the camera 42. If the turbidity in one of the detection cylinders 38 is the highest and the difference between the turbidity in other detection cylinders 38 is large, it is necessary to strengthen the stirring of the corresponding position of the solution in the detection cylinder 38, that is, the diffusion blade 19 starts stirring.

[0053] At this time, the first electromagnet 21 is powered off, and under the elastic force of the first spring 24, the diffusion rod 18 is pushed out by the elastic force of the spring. Since there is resistance to the diffusion rod 18 in the solution, in order to accelerate the diffusion rod 18 to slide out of the mixing rod 51, the solenoid valve on the connecting pipe 27 is opened at this time, and the edible salt in the acceleration chamber 26 enters the storage chamber 25 through the connecting pipe 27. The edible salt can no longer increase the volume of water in the storage chamber 25 and increase the weight of the storage chamber 25. Therefore, under the elastic force of the first spring 24 and the weight increase of the diffusion rod 18, the effect of accelerating the diffusion rod 18 to slide out of the sliding hole 22 is achieved. When the diffusion rod 18 is located outside the mixing rod 51, under the elastic force of the torsion spring, the diffusion leaf 19 swings out of the accommodating chamber 23 until the diffusion leaf 19 swings to a horizontal state, and the diffusion leaf 19 stirs the space between the two adjacent stirring leaves 17.

[0054] When the stirring rod 16 rotates forward, the gear 29 starts to rotate under the action of the ring gear 28, and the gear 29 drives the driving disk 31 to rotate. Due to the cooperation between the pawl 33 and the ratchet groove 35, the rotating disk 32 starts to rotate, that is, the mixing rod 51 starts to rotate, and the diffusion rod 18 rotates together, and the diffusion blade 19 starts to stir the designated area.

[0055] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A system for treating ammonia nitrogen wastewater, characterized by: The invention comprises a sedimentation filter unit (10), an ammonia nitrogen adsorption unit (20), a proportional pump unit (40), a sodium hypochlorite generation unit (70), a salt dissolving unit (90), an acid washing unit (60), a buffer unit (50), a neutralization unit (30), a regeneration circulation pump (80), and a rectification and control unit (100), wherein the sedimentation filter unit (10) is connected to the ammonia nitrogen adsorption unit (20), and wastewater is discharged after being treated by the sedimentation filter unit (10) and the ammonia nitrogen adsorption unit (20), and the ammonia nitrogen adsorption unit (20) is provided with a wastewater inlet, a wastewater outlet, a regenerated water inlet, and a regenerated water outlet, wherein the wastewater inlet is connected to the sedimentation filter unit (10), and the wastewater outlet is connected to an external discharge pipe; The sedimentation filtration unit (10) comprises a plurality of triplex boxes, filters, and reverse osmosis membrane groups. One end of the sedimentation filtration unit (10) is connected to the wastewater inlet, and the other end is connected to the wastewater inlet of the ammonia nitrogen adsorption unit (20); One of the triple boxes is provided with a regulating device for flocculation and sedimentation; The regulating device comprises a bracket (14), a stirring mechanism arranged on the bracket (14), and a detection mechanism for detecting the turbidity of the solution; The stirring mechanism comprises a stirring motor (15), a stirring rod (16), a plurality of stirring blades (17) arranged on the outer wall of the stirring rod (16), and a mixing assembly arranged on the stirring blades (17); the stirring rod (16) is rotatably arranged on the bracket (14); the stirring motor (15) is used to control the rotation of the stirring rod (16); A plurality of stirring blades (17) are divided into a plurality of groups along the vertical direction, and the mixing assembly is arranged on any one of the stirring blades (17) in each group of the stirring blades (17); The mixing assembly comprises a mixing rod (51) rotatably arranged on the stirring blade (17), a transmission part for realizing the self-rotation of the mixing rod (51), and a diffusion part arranged in the mixing rod (51), wherein the diffusion part is used to increase the contact area between the mixing rod (51) and the solution, and the mixing rod (51) is arranged vertically; The diffusion part includes a diffusion rod (18), a diffusion leaf (19), a first electromagnet (21) and an acceleration group for accelerating the diffusion rod (18) to slide out of the mixing rod (51); the mixing rod (51) is provided with a sliding hole (22) for the diffusion rod (18) to slide; a plurality of accommodating cavities (23) are provided on the side wall of the diffusion rod (18); the diffusion leaf (19) is hingedly arranged in the accommodating cavity (23); an inner wall of the sliding hole (22) is provided with a mounting hole; the first electromagnet (21) is installed in the mounting hole; and the first electromagnet (21) is used to adsorb the top side wall of the diffusion rod (18); The acceleration group comprises a first spring (24), a storage chamber (25) and an acceleration chamber (26), the two ends of the first spring (24) are fixedly connected to the inner wall of the end of the sliding hole (22) and the top of the diffusion rod (18), respectively, the storage chamber (25) contains water, the acceleration chamber (26) is arranged above the storage chamber (25) and the acceleration chamber (26) contains edible salt, a connecting pipe (27) is connected between the acceleration chamber (26) and the storage chamber (25), and a solenoid valve is arranged on the connecting pipe (27), the storage chamber (25) is arranged in the diffusion rod (18), and the acceleration chamber (26) is arranged in the mixing rod (51).

2. The ammonia nitrogen wastewater treatment system according to claim 1, characterized in that: The transmission part comprises a ring gear (28), a gear (29) and a control group for realizing unidirectional rotation of the mixing rod (51); the ring gear (28) is fixed on the bracket (14); the gear (29) is connected to the top of the mixing rod (51) through the control group; and the gear (29) is meshed with the ring gear (28).

3. The ammonia nitrogen wastewater treatment system according to claim 2, characterized in that: The control group includes a driving disk (31), a rotating disk (32), a ratchet (33) and an elastic member (34). The driving disk (31) is coaxially fixed with the gear (29). The rotating disk (32) is fixedly connected to the top of the mixing rod (51). The ratchet (33) is rotatably arranged on the driving disk (31). The inner ring of the rotating disk (32) is provided with a ratchet groove (35). The ratchet (33) is inserted into the ratchet groove (35). The elastic member (34) is used to realize the ratchet (33) swinging toward the ratchet groove (35).

4. The ammonia nitrogen wastewater treatment system according to claim 1, characterized in that: The detection mechanism comprises a detection frame (36) arranged on the bracket (14), a plurality of detection rods (37) rotatably arranged on the detection frame (36), a detection cylinder (38) lifted and lowered on the detection rod (37), a light source (39), a light shielding plate (41), a camera (42), a discharge assembly for discharging the solution in the detection cylinder (38), and a driving assembly for controlling the plurality of detection rods (37) to rotate together. The detection cylinder (38) is provided with an inlet near its top side wall, and the inlet is provided with a second solenoid valve. The light source (39) and the light shielding plate (41) are respectively provided on two opposite side walls of the detection frame (36), and the camera (42) is provided above the light source (39).

5. The ammonia nitrogen wastewater treatment system according to claim 4, characterized in that: The blanking assembly includes a blanking plate (43), a blanking motor (44) and a cleaning part for cleaning the blanking plate (43); an opening is provided at the bottom of the detection cylinder (38); the blanking plate (43) is rotatably provided at the opening and the blanking motor (44) controls the rotation of the blanking plate (43); and the rotation axis of the blanking plate (43) and the opening is located on a symmetrical plane of the blanking plate (43).

6. The ammonia nitrogen wastewater treatment system according to claim 5, characterized in that: The cleaning portion comprises a cleaning rod (45) slidably arranged on the detection rod (37), a cleaning member (46) movably arranged on the cleaning rod (45), and a traction group for traction of the cleaning member (46), wherein the movement direction of the cleaning member (46) is perpendicular to the rotation axis direction of the blanking plate (43).

7. The ammonia nitrogen wastewater treatment system according to claim 4, characterized in that: The driving assembly includes a plurality of chains (47), a driving motor (48) and a sprocket (49), wherein the plurality of sprockets (49) are respectively fixed on the top of the plurality of detection rods (37), the chain (47) is meshedly connected with the plurality of sprockets (49), and the driving motor (48) controls the rotation of the sprocket (49) located at either end.

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