Ammonia-nitrogen wastewater treatment system

Abstract

The invention discloses an ammonia-nitrogen wastewater treatment system which comprises a deposition and filtration unit, an ammonia-nitrogen adsorption unit, a proportioning pump unit, a sodium hypochlorite generation unit, a salt dissolving unit, an acid pickling unit, a buffer unit, a neutralization unit, a regeneration circulating pump and a rectification and control unit, wastewater is discharged after being treated by the deposition filtering 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 with the deposition filtering unit, and the wastewater outlet is connected with an external discharge pipe; the deposition filtering unit comprises a plurality of triple boxes, a filter and a reverse osmosis membrane group, one end of the triple box unit is connected with a wastewater inlet, and the other end of the triple box unit is connected with a wastewater inlet of the ammonia nitrogen adsorption unit. According to the system, the problem of sewage discharge is solved, ammonia nitrogen absorbed in the system is degraded into green gas, and saline water in the system can be recycled, so that the wastewater treatment cost is effectively reduced.

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 in water comes from many sources, including domestic sewage and landfill leachate, as well as industrial wastewater discharge from steel, oil refining, fertilizer, leather tanning, petrochemicals, glass manufacturing, feed production, etc. Ammonia nitrogen is the main factor leading to eutrophication of water bodies, which can cause the proliferation of algae and microorganisms in water bodies, causing a sharp drop in dissolved oxygen in water bodies, leading to the death of fish and other aquatic organisms due to lack of oxygen, and having a serious impact on water quality.

[0003] At present, the treatment of ammonia nitrogen wastewater is usually biological treatment or finished sodium hypochlorite oxidation method, which has the following problems: 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; for the above problems, no relevant solutions have been proposed. Summary of the invention

[0004] In order to improve the problem of not meeting the 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 solution: A treatment system for ammonia nitrogen wastewater, comprising a sedimentation filtration 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 filtration unit is connected to the ammonia nitrogen adsorption unit, and the wastewater is discharged after being treated by the sedimentation filtration 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 filtration unit, and the wastewater outlet is connected to an external discharge pipe; The sedimentation filtration unit comprises a plurality 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; One group of the triple boxes is provided with a regulating device for flocculation and sedimentation; The regulating device comprises a bracket, a stirring mechanism arranged on the bracket, and a detection mechanism for detecting the turbidity of the solution; The stirring mechanism comprises 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. 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.

[0006] 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.

[0007] 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 a plurality of accommodating cavities, the diffusion leaf is hingedly arranged 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, and the first electromagnet is used to adsorb the top side wall of the diffusion rod.

[0008] Optionally, the acceleration group includes a first spring, a storage chamber and an acceleration chamber, the two ends of the first spring are respectively fixedly connected to the inner wall of the end of the sliding hole and the top of the diffusion rod, 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, a solenoid valve is arranged on the connecting pipe, the storage chamber is arranged in the diffusion rod, and the acceleration chamber is arranged in the mixing rod.

[0009] 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 meshingly connected with the ring tooth.

[0010] Optionally, the control group includes a driving disk, a rotating disk, a ratchet 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 ratchet is rotatably arranged on the driving disk, the inner ring of the rotating disk is provided with a ratchet groove, the ratchet is inserted into the ratchet groove, and the elastic member is used to enable the ratchet to swing toward the direction of the ratchet groove.

[0011] 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 lifted and lowered on the detection rod, a light source, a shading plate, a camera, a unloading component for unloading the solution in the detection cylinder, and a driving component for controlling the plurality of detection rods to rotate 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 shading plate are respectively provided on two opposite side walls of the detection frame, and the camera is provided above the light source.

[0012] Optionally, the unloading assembly includes a unloading plate, a unloading motor and a cleaning part for cleaning the unloading plate, an opening is provided at the bottom of the detection cylinder, the unloading plate is rotatably provided at the opening and the unloading motor controls the rotation of the unloading plate, and the rotation axis of the unloading plate and the opening is located on the symmetrical plane of the unloading plate.

[0013] 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 towing the cleaning piece, and the movement direction of the cleaning piece is perpendicular to the rotation axis direction of the blanking plate.

[0014] Optionally, the driving assembly includes multiple chains, a driving motor and sprockets, the multiple sprockets are respectively fixed on the top of the multiple detection rods, the chain is meshingly connected with the multiple sprockets, and the driving motor controls the rotation of the sprocket located at either end.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the ammonia nitrogen adsorption unit is saturated with adsorption, the regeneration circulation pump in the system detects the adsorption saturation signal and starts, and the electric valve at the outlet of the salt dissolving unit is opened, the sodium hypochlorite brine inlet is opened, the electric valve at the acid inlet and acid return port is closed, the sodium hypochlorite outlet is opened, and the hydrogen exhaust fan is started. The regeneration circulation pump extracts a certain concentration of brine from the salt dissolving unit and enters the sodium hypochlorite generation unit. After electrolysis in the generation unit, a high concentration of sodium hypochlorite solution and hydrogen are generated and enter the buffer unit. The buffer unit detects the outlet pH and ammonia nitrogen concentration, and opens the alkali solution inlet electric valve and high-precision electric drive proportional pump in the proportional pump unit when the pH is less than 6. After the mixed liquid of the proportional pump unit enters the ammonia nitrogen adsorption unit, 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. The salt dissolving unit performs detection. If the pH is greater than 9, it is fed back to the control system to adjust the proportion of the proportional pump. This process is circulated. When the ammonia nitrogen concentration in the salt dissolving unit drops to zero, it switches to other groups of regeneration processes. At this time, the tank of the dim adsorption unit is in a standby state; 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 specified position, the second solenoid valve on the entrance is opened, and the solution enters the detection cylinder. At this time, the detection cylinder is pulled back to the initial position to complete the material removal work. When the driving motor controls one of the sprockets to rotate, multiple detection rods rotate together under the driving action of the chain, and the solution in the detection cylinder begins to mix. After waiting for a period of time, the turbidity of the solution in the detection cylinder tends to be stable. The light source is turned on, and the turbidity of the solutions in multiple detection cylinders is compared and analyzed through the camera. If the turbidity in one of the detection cylinders is the highest and the difference with the turbidity in other detection cylinders is large, it is necessary to strengthen the stirring of the corresponding position of the solution in the detection cylinder, that is, the diffusion blade starts stirring; 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 no longer increase the volume of the water in the storage chamber and increase the weight of the storage chamber. Therefore, under the elastic force of the first spring and the weight increase 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, and the diffusion leaf stirs the space between two adjacent stirring leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a process flow chart of an embodiment of the present application; Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 3 is a schematic diagram of a mixing component in an embodiment of the present application; Figure 4 is a schematic diagram of a control group of an embodiment of the present application; Figure 5 is a schematic diagram of a detection mechanism of an embodiment of the present application; Figure 6 yes Figure 5 Enlarged schematic diagram of part A.

[0017] Figure 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 member; 47. Chain; 48. Drive motor; 49. Sprocket; 51. Mixing rod. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-6 This application is described in further detail.

[0019] The present application embodiment discloses a system for treating ammonia nitrogen wastewater. Figure 1-Figure 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 generating 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, wherein the wastewater inlet is connected to the sedimentation filter unit 10, and the wastewater outlet is connected to an external discharge pipe.

[0020] The sedimentation filtration unit 10 comprises 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 on the ammonia nitrogen adsorption unit 20; the ammonia nitrogen adsorption unit 20 comprises several groups of adsorption tanks and supporting pipelines connected in parallel with water channels. The wastewater preliminarily treated by the sedimentation filtration unit 10 enters a group of adsorption tanks through the wastewater inlet for ammonia nitrogen adsorption. After the adsorption, the water quality meets the discharge standard and is discharged through the wastewater outlet. After the adsorption tank is saturated, it can be automatically switched to other groups of adsorption tanks; after the adsorption is saturated, a group of adsorption tanks in the adsorption unit 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.

[0021] The salt dissolving unit 90 is equipped with an online ammonia nitrogen analyzer and an online pH meter, and the salt dissolving unit 90 is provided with a liquid inlet of the salt dissolving unit 90 at the top and a liquid outlet of the salt dissolving unit 90 at the bottom, the liquid outlet of the salt dissolving unit 90 is connected to the inlet of the regeneration circulation pump 80, the inlet of the regeneration circulation pump 80 is connected to the liquid outlet of the salt dissolving unit 90, and the outlet of the regeneration circulation pump 80 is connected to the brine inlet of the sodium hypochlorite generating unit 70. The brine flows out from the liquid outlet of the salt dissolving unit 90, is pressurized by the regeneration circulation pump 80, and reaches the sodium hypochlorite generating unit 70 through the pipeline, and the regeneration circulation pump 80 ensures the circulation flow of the equipment; the sodium hypochlorite generating unit 70 is composed of a plurality of electrolytic cell assemblies, pipelines and valves in series structure in the water circuit and the circuit. The sodium hypochlorite generating unit 70 is respectively provided 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, among which a pressure transmitter is installed at the brine inlet and a temperature transmitter is 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 the acid return port are connected to the acid outlet and the acid inlet of the pickling unit 60 respectively.

[0022] 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 electrode of the rectifier control unit 100, and the cathode of the electrode assembly is connected to the cathode of the rectifier control cabinet 100. After electrolysis, a high-concentration sodium hypochlorite solution is generated and input into the buffer unit through the outlet of the sodium hypochlorite unit; the pickling unit includes a pickling box, a pickling pump and a pipeline valve, and the inlet and outlet valves are all electric valves; the buffer unit 50 is equipped with a hydrogen exhaust fan 50a, an online PH analyzer 50b, and an online ammonia nitrogen analyzer 50c. A hydrogen exhaust port is provided at the top of the buffer unit, an air inlet and a sodium hypochlorite inlet are provided at the top, and a sodium hypochlorite outlet is provided at the bottom. A hydrogen exhaust fan 50a is installed on the air inlet to blow air into the interior to dilute the hydrogen generated by the system and then discharge it 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 .

[0023] The proportional pump unit 40 is composed of a number of high-precision electric-driven proportional pumps, pipelines, and valves. The proportional pump unit is provided with a sodium hypochlorite inlet, an alkali solution inlet, and a mixed solution outlet, each of which is provided 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, and the mixed solution outlet is connected to the regenerated water inlet of the ammonia nitrogen adsorption unit 20. The neutralization unit 30 is composed of a number of alkali storage tanks and pipelines, each alkali storage tank stores a certain concentration of alkali solution or sodium carbonate solution, and the neutralization unit 30 is provided with an alkali solution outlet.

[0024] When the ammonia nitrogen adsorption unit 20 is saturated with adsorption, the regeneration circulation pump 80 in the system detects the adsorption saturation signal and starts, and the electric valve at the outlet of the salt dissolving unit 90 is opened, the sodium hypochlorite brine inlet is opened, the acid inlet and the acid return electric valves are closed, the sodium hypochlorite outlet is opened, and the hydrogen exhaust fan is started. The regeneration circulation pump 80 extracts a certain concentration of brine from the salt dissolving unit 90 and enters the sodium hypochlorite generating unit 70. After electrolysis by the sodium hypochlorite generating unit 70, a high concentration of 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, and opens the alkali solution inlet electric valve and the high-precision electric drive proportional pump in the proportional pump unit 40 when the pH is less than 6. 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 tank of the ammonia nitrogen adsorption unit 20 is in a standby state.

[0025] One group of the triple boxes is provided with a regulating device for flocculation and sedimentation; the regulating device includes a bracket 14, a stirring mechanism arranged 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 time it can be proved that the flocculation work has been completed, and the detection mechanism is used to compare the turbidity of the solution at different stages and different depths, and then it can be judged whether the flocculation of the solution is completed, especially 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.

[0026] 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 blades 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.

[0027] The mixing assembly is arranged on any stirring blade 17 in each group of stirring rods 16, and 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 arranged vertically, and the length of the mixing rod 51 is smaller than the distance between the two groups of stirring blades 17, and the diffusion part includes a diffusion rod 18, a diffusion blade 19, a first electromagnet 21, and a diffusion rod 18 for accelerating the diffusion rod 18 to slide out of the mixing rod 51. The acceleration group and the mixing rod 51 are provided with a sliding hole 22 for the diffusion rod 18 to slide, and a plurality of accommodating cavities 23 are provided on the side wall of the diffusion rod 18. The diffusion blades 19 are hingedly arranged in the accommodating cavities 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 two adjacent groups of stirring blades 17. In the initial state, the first electromagnet 21 adsorbs the diffusion rod 18, and the bottom of the diffusion rod 18 is also located in the sliding hole 22.

[0028] One end of the diffusion leaf 19 is hinged to the inner wall of the accommodating chamber 23, and the axis direction of the hinge is perpendicular to the axis direction of the diffusion rod 18. The diffusion leaf 19 is connected to the inner wall of the accommodating chamber 23 by a torsion spring. When the diffusion leaf 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 leaf 19 is in a vertical state and is located in 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 leaf 19 swings out of the accommodating chamber 23 until the diffusion leaf 19 swings to a horizontal state. The diffusion leaf 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.

[0029] 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 respectively fixedly connected to the inner wall of the end of the slide hole 22 and the top of the diffusion rod 18. The storage chamber 25 contains water. The acceleration chamber 26 is arranged above the storage chamber 25 and contains edible salt. A connecting pipe 27 is connected between the acceleration chamber 26 and the storage chamber 25. 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. The connecting pipe 27 is arranged 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 needs to slide out from the mixing rod 51, the connecting pipe 27 can be adjusted. When the diffusion rod 18 slides out of the mixing rod 51, 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 of the mixing rod 51, the electromagnetic 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 the storage chamber 25 is weighted. Therefore, under the elastic force of the first spring 24 and the weight-increasing effect on the diffusion rod 18, the effect of accelerating the diffusion rod 18 to slide out of the sliding hole 22 is achieved. It should be noted in this embodiment that solutions with different components and solutions in different flocculation states have different resistance to the diffusion rod 18 when sliding out, so 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 increase the weight of the diffusion rod 18 to accelerate its sliding out of the sliding hole 22.

[0030] 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 arranged on the driving disk 31, and a ratchet groove 35 is arranged on the inner ring of the rotating disk 32. 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.

[0031] The driving disk 31 is located inside the rotating disk 32. The bottom of the rotating disk 32 is connected to the mixing rod 51 through a plurality of supporting rods. In this embodiment, in order to consider the installation relationship, the top of the driving disk 31 is located above the rotating disk 32, that is, the driving disk 31 extends out of the rotating disk 32. The pawl 33 is hinged to the side wall of the driving disk 31, and the circumferential direction of the hinge is vertically arranged. 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 disk 31. In this embodiment, only when the mixing 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 matching relationship between the ratchet 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; 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 ratchet 33 idles in the rotating disk 32, and the mixing rod 51 cannot rotate.

[0032] 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 tube 38 lifted and lowered on the detection rod 37, a light source 39, a shading plate 41, a camera 42, a feeding assembly for realizing the feeding of the solution in the detection tube 38, and a driving assembly for controlling the rotation of the plurality of detection rods 37 together. The detection tube 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 shading plate 41 are respectively arranged on two opposite side walls of the detection frame 36. The camera 42 is arranged above the light source 39. The top end of the detection rod 37 is located above the detection frame 36. The lifting and lowering of the detection tube 38 is realized by an electric push rod. In this embodiment, the detection tube 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 different times and at the same position, that is, in this embodiment, the turbidity comparison of the same position at different times is first judged to judge the flocculation process, and when the turbidity comparison of 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 cumbersomeness of detection in this embodiment, the turbidity comparison analysis of solutions at different positions at the same time is emphasized in this embodiment, and then the solution at the position with the highest turbidity needs to be stirred more strongly, that is, it is stirred by the diffusion leaf 19, and the diffusion rod 18 needs to slide out of the mixing rod 51.

[0033] Therefore, in the present 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 a plurality of second electromagnets. When the diffusion leaves 19 at the corresponding position are not needed to rotate, the diffusion leaves 19 will not be released at 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 are needed to be stirred, the diffusion leaves 19 are first controlled to slide out, and the plurality of 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 with the rotating rod.

[0034] 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.

[0035] The driving assembly includes a plurality of sprockets 49, a driving motor 48 and a sprocket 49. The plurality of sprockets 49 are respectively fixed on the top of the plurality of detection rods 37. The chains 47 are meshed and connected with the plurality of sprockets 49. The driving motor 48 controls the rotation of the sprockets 49 at any end. The chain 47 is meshed with the plurality of sprockets 49 at the same time. When the driving motor 48 controls one of the sprockets 49 to rotate, under the driving action of the chain 47, of course, in this embodiment, a sprocket 49 needs to be spared on the detection frame 36 for the driving motor 48 to control the plurality of detection rods 37 to 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 solution in the plurality of 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 with 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 leaf 19 starts to stir.

[0036] The unloading assembly includes an unloading plate 43, an unloading motor 44 and a cleaning part for cleaning the unloading plate 43. An opening is arranged at the bottom of the detection cylinder 38. The unloading plate 43 is rotatably arranged at the opening and the unloading motor 44 controls the rotation of the unloading plate 43. The rotation axis of the unloading plate 43 and the opening is located on the symmetric plane of the unloading plate 43. When the unloading plate 43 is in a horizontal state, the opening of the detection cylinder 38 is closed. When the unloading 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 unloading plate 43 needs to be cleaned.

[0037] The cleaning part includes 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. 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 adopts 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 the 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 with 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.

[0038] 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 with 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 to stir.

[0039] 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 the storage chamber 25 is weighted. Therefore, under the elastic force of the first spring 24 and the weight-increasing effect on the diffusion rod 18, the diffusion rod 18 is accelerated to slide out of the sliding hole 22. 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 two adjacent stirring leaves 17.

[0040] 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 matching relationship between the ratchet 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.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A system for treating ammonia nitrogen wastewater, characterized in that: The invention comprises a sedimentation filtration 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 filtration unit (10) is connected to the ammonia nitrogen adsorption unit (20), and wastewater is discharged after being treated by the sedimentation filtration 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 filtration unit (10), and the wastewater outlet is connected to an external discharge pipe; The sedimentation filtration unit (10) comprises a plurality 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); One group of the triple boxes is provided with a regulating device for flocculation and sedimentation; The regulating device comprises a support (14), a stirring mechanism arranged on the support (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 component arranged on the stirring blades (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 divided into a plurality of groups along the vertical direction, and the mixing component is arranged on any one of the stirring blades (17) in each group of the stirring rods (16).

2. The ammonia nitrogen wastewater treatment system according to claim 1, characterized in that: The mixing component comprises a mixing rod (51) rotatably arranged on the stirring blade (17), a transmission part used to realize 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.

3. The ammonia nitrogen wastewater treatment system according to claim 1, characterized in that: The diffusion part comprises 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).

4. The ammonia nitrogen wastewater treatment system according to claim 1, characterized in that: The acceleration group comprises a first spring (24), a storage chamber (25) and an acceleration chamber (26); two ends of the first spring (24) are respectively fixedly connected to the inner wall of the end of the sliding hole (22) and the top of the diffusion rod (18); water is stored in the storage chamber (25); the acceleration chamber (26) is arranged above the storage chamber (25) and edible salt is stored in the acceleration chamber (26); a connecting pipe (27) is connected between the acceleration chamber (26) and the storage chamber (25); 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).

5. The ammonia nitrogen wastewater treatment system according to claim 1, characterized in that: The transmission part comprises 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); the gear (29) is connected to the top of the mixing rod (51) through the control group; and the gear (29) is meshedly connected with the ring tooth (28).

6. The ammonia nitrogen wastewater treatment system according to claim 1, characterized in that: The control group comprises 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); a ratchet groove (35) is arranged on the inner ring of the rotating disk (32); the ratchet (33) is inserted into the ratchet groove (35); and the elastic member (34) is used to realize the ratchet (33) swinging in the direction of the ratchet groove (35).

7. 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 shading plate (41), a camera (42), a material discharge component for realizing material discharge of the solution in the detection cylinder (38), and a driving component 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 shading plate (41) are respectively arranged on two opposite side walls of the detection frame (36), and the camera (42) is arranged above the light source (39).

8. The ammonia nitrogen wastewater treatment system according to claim 1, characterized in that: The unloading assembly comprises an unloading plate (43), an unloading motor (44) and a cleaning part for cleaning the unloading plate (43); an opening is arranged at the bottom of the detection cylinder (38); the unloading plate (43) is rotatably arranged at the opening and the unloading motor (44) controls the rotation of the unloading plate (43); and a rotation axis of the unloading plate (43) and the opening is located on a symmetrical plane of the unloading plate (43).

9. The ammonia nitrogen wastewater treatment system according to claim 1, 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).

10. The ammonia nitrogen wastewater treatment system according to claim 1, characterized in that: The driving assembly comprises 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 meshingly connected with the plurality of sprockets (49), and the driving motor (48) controls the rotation of the sprocket (49) located at any end.

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