Parameter determination test device for short-cut nitrification and denitrification process model

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a short-cut nitrification denitrification process model parameter determination test device which comprises a reaction kettle, a contact layer is fixedly connected in the reaction kettle, an interlayer is formed between the contact layer and the inner wall of the reaction kettle, and the interlayer is used for being filled with a heating solution. A heating wire and a temperature sensor are fixedly connected in the interlayer; the top of the reaction kettle is fixedly connected with an air inlet pipe, and the top of the reaction kettle is fixedly connected with a conveying assembly; an inner conveying pipe is fixedly connected to the inner circle center of the air inlet pipe, and an interlayer is arranged between the air inlet pipe and the conveying pipe. The T-shaped adjusting rod drives the adjusting conveying pipe to swing in a wavy line, sodium hydroxide is downwards conveyed to the lower area in the reaction kettle in a wavy conveying track to be mixed with waste liquid, the sodium hydroxide is dynamically put in the wavy track, the coverage range is wide, and the pH adjusting time is shortened through rapid and uniform mixing.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a test device for determining model parameters of a short-range nitrification and denitrification process. Background Art

[0002] In the existing technology, a SBR reactor is used to achieve stable operation of a short-range nitrification and denitrification process by adopting a control strategy combining high temperature, high pH value and low DO, and the change law of ammonia nitrogen, nitrate nitrogen and nitrite nitrogen in the nitrification stage is studied.

[0003] In the prior art, during the operation of the short-range nitrification and denitrification process, an aeration pipe is usually inserted into the interior of the device to provide oxygen for the waste liquid inside. The aeration pipe is usually fixed inside the reactor, and the oxygen delivery is fixed, so that the oxygen cannot be well distributed inside the reactor.

[0004] Therefore, a short-range nitrification and denitrification process model parameter determination test device is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] To achieve the above object, the present invention provides the following technical solutions: A test device for measuring parameters of a short-range nitrification and denitrification process model includes a reactor, a contact layer is fixedly connected inside the reactor, a sandwich is formed between the contact layer and the inner wall of the reactor, the sandwich is used to fill a heating solution, and a heating wire and a temperature sensor are fixedly connected inside the sandwich; an air inlet pipe is fixedly connected to the top of the reactor, and a conveying assembly is fixedly connected to the top of the reactor; an inner conveying pipe is fixedly connected to the inner center of the air inlet pipe, a sandwich is provided between the air inlet pipe and the conveying pipe, and the sandwich is used to convey oxygen, the lower end of the air inlet pipe is located in the reactor and is provided with multiple groups of aeration holes on the surface, the multiple groups of aeration holes are connected with the sandwich, the bottom of the inner conveying pipe is rotatably connected to a rotating disk, one end of the rotating disk is fixedly connected to the contact conveying pipe, the aeration holes are connected to the rotating disk and the contact conveying pipe, one end of the contact conveying pipe is fixedly connected to a force-bearing rod, and the upper end of the force-bearing rod is fixedly connected to a gear ring.

[0006] Preferably, the side wall of the contact layer is rotatably connected to a gear ring, and the upper side wall of the reactor is embedded with a liquid inlet pipe, which is used to discharge external waste liquid into the reactor for reaction measurement. A drain valve is provided under the side wall of the reactor to facilitate the subsequent discharge of the measurement liquid in the reactor.

[0007] Preferably, a dissolved oxygen meter, a nitrite detector, an ammonia nitrogen detector, and a pH detector are provided on the top of the reactor, and the contact ends of the dissolved oxygen meter, the nitrite detector, the ammonia nitrogen detector, and the pH detector are located in the contact layer and in contact with the wastewater inside, for detecting the wastewater.

[0008] Preferably, the conveying assembly includes a vertical pipe, which is fixedly connected to the reactor, the top of the vertical pipe is fixedly connected to the containing frame, the bottom of the vertical pipe is fixedly connected to the auger frame and is communicated with the inside of the auger frame, an auger is rotatably connected inside the auger frame, the top of the auger is fixedly connected to the center of the driving gear, and the auger frame is fixedly connected to the base.

[0009] Preferably, the base is fixedly connected to the side wall of the contact layer, the driving gear is rotatably connected to the top of the auger frame, the driving gear is transmission-connected to the bevel gear below the bevel gear group, the bevel gear group is rotatably connected to the base, the center of the bevel gear at the other end of the bevel gear group is fixedly connected to the screw, and the screw is rotatably connected to the side wall of the limiting frame.

[0010] Preferably, the limiting frame is fixedly connected to the side wall of the base, the screw is connected to the inner thread of the threaded sleeve, the bottom of the threaded sleeve is fixedly connected to the sliding rod, a T-shaped adjustment rod is slidably connected in the T-shaped groove in the area below the sliding rod, and the T-shaped adjustment rod is slidably inserted into the arc groove on the horizontal plate below, and the horizontal plate is fixedly connected to the limiting frame.

[0011] Preferably, the side wall of the reactor is fixedly connected to a drive motor, the output shaft of the drive motor is fixedly connected to the center of the bevel gear at the upper end of the bevel gear set, and the drive gear is engaged with the ring gear; a discharge port is provided below the auger frame, and a mixing rod is rotatably connected to the bottom of the auger frame, and multiple groups of stirring blades are provided on the side wall of the mixing rod.

[0012] Preferably, the conveying component is provided with multiple groups, and an adsorption magnetic ring is fixedly connected to the center of the driving gear on the conveying component. The center of the adsorption magnetic ring is in contact with the bevel gear transmission shaft below the bevel gear group. The adsorption magnetic ring is energized to magnetically attract the transmission shaft, so that the bevel gear group drives the driving gear and the auger to rotate through the adsorption magnetic ring.

[0013] Preferably, the discharge port below the auger frame is connected to one end of the bellows, the other end of the bellows is fixedly connected to the adjusting conveying pipe, the top side wall of the adjusting conveying pipe is movably connected to a contact rod, and the other end of the contact rod is movably connected to the bottom of the T-shaped adjusting rod.

[0014] Preferably, the T-shaped adjustment rod is used to change the angle and front-to-back position between the delivery pipe and the auger frame.

[0015] Compared with the prior art, the present invention provides a test device for determining parameters of a short-range nitrification and denitrification process model, which has the following beneficial effects: 1. The present invention integrates a dissolved oxygen meter, a nitrite detector, an ammonia nitrogen detector, and a pH detector. Data is transmitted in real time through a controller and a 5G module, making it easy for researchers to remotely monitor the experimental process and record data, thereby improving experimental efficiency and convenience, and facilitating data analysis and model optimization. The T-shaped regulating rod drives the regulating conveying pipe to swing in a wavy line. The conveying trajectory of sodium hydroxide is wavy and downward to the lower area of ​​the reactor to mix with the waste liquid. Sodium hydroxide is dynamically added through a wavy trajectory with a wide coverage area (annular distribution). The rapid and uniform mixing shortens the pH adjustment time, allowing the nitrification reaction to enter and maintain the optimal pH range (7.5-8.5) faster, thereby improving the ammonia nitrogen conversion efficiency and the nitrite accumulation rate. The efficient mixing may reduce the total amount of alkali solution required to reach the target pH.

[0016] 2. The present invention uses a combined axial and radial stirring mode through a contact conveying pipe and a mixing rod, combined with dynamic dosing, to significantly improve the contact efficiency between reactants (ammonia nitrogen, alkali, oxygen) and microorganisms (nitrifying bacteria), reduce concentration gradients, and accelerate the reaction rate. Rotary aeration can change the distribution of oxygen in the reactor as needed, helping to create a DO gradient environment conducive to nitrite accumulation. The combination of fixed and rotary aeration provides greater operational flexibility. When the force-bearing rod rotates, it scrapes the side wall of the contact layer to prevent materials such as sodium hydroxide from adhering to and scaling, thereby ensuring heat transfer efficiency and the effective volume of the reactor.

[0017] 3. The present invention provides two aeration modes: fixed and movable (rotating). Oxygen can enter the rotating contact delivery pipe through the inner delivery pipe for radially distributed aeration. Combined with real-time monitoring by a dissolved oxygen meter, by adjusting the aeration volume and mode (fixed, rotating, or a combination), DO can be more accurately controlled within the optimal range required for short-range nitrification, thereby increasing the nitrite accumulation rate. Dynamic aeration and enhanced stirring work together to improve the mass transfer rate and utilization rate of oxygen and reduce energy consumption.

[0018] 4. The present invention can independently control stirring (contact delivery pipe system) or dosing and stirring linkage by engaging and disengaging the adsorption magnetic ring. Aeration can also be performed independently or in conjunction with dosing or stirring. Experimental conditions can be flexibly set. For example, the effects of different operating modes such as stirring alone, dosing and stirring and aeration simultaneously on short-range nitrification performance can be studied. Through dynamic dosing and enhanced mixing, suitable and uniform pH and substrate concentrations are maintained. Flexible aeration and real-time DO control optimize the DO environment and promote the efficient accumulation of nitrite. The compact structure reduces costs and energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the interlayer and contact layer structure of the present invention; Figure 3 Schematic diagram of the internal structure of the reactor of the present invention Figure 1 ; Figure 4 Schematic diagram of the internal structure of the reactor of the present invention Figure 2 ; Figure 5 For the present invention Figure 2 A in the figure shows the enlarged structural diagram; Figure 6 Schematic diagram of the conveying assembly structure of the present invention Figure 1 ; Figure 7 Schematic diagram of the conveying assembly structure of the present invention Figure 2 ; Figure 8 It is a schematic diagram of the conveying trajectory structure of multiple groups of adjustable conveying pipes of the present invention.

[0020] In the figure: 1. Reactor; 2. Liquid inlet pipe; 3. Dissolved oxygen meter; 4. Nitrite detector; 5. Ammonia nitrogen detector; 6. pH meter; 7. Air inlet pipe; 8. Delivery assembly; 9. Drain valve; 11. Interlayer; 12. Contact layer; 13. Gear ring; 71. Inner conveying pipe; 72. Aeration hole; 73. Rotating disk; 74. Contact conveying pipe; 75. Force rod; 81. Vertical tube; 82. Receiving frame; 83. Auger frame; 84. Drive gear; 85. Base; 86. Bevel gear set; 87. Limiting frame; 88. Screw; 89. Threaded sleeve; 810. Sliding rod; 811. T-shaped adjustment rod; 812. Horizontal plate; 813. Arc chute; 814. Drive motor; 815. Conveying track; 831. Bellows; 832. Adjusting conveying pipe; 833. Contact rod; 834. Mixing rod. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1 - Figure 8In this embodiment, a short-range nitrification and denitrification process model parameter measurement test device includes a reactor 1, a contact layer 12 is fixedly connected to the reactor 1, and an interlayer 11 is formed between the contact layer 12 and the inner wall of the reactor 1. The interlayer 11 is used to fill a heating solution, and a heating wire and a temperature sensor are fixedly connected to the interlayer 11; a gear ring 13 is rotatably connected to the side wall of the contact layer 12; an inlet pipe 2 is embedded in the upper side wall of the reactor 1, and the inlet pipe 2 is used to discharge external waste liquid into the reactor 1 for reaction measurement; a drain valve 9 is provided at the bottom of the side wall of the reactor 1 to facilitate the subsequent discharge of the measurement liquid in the reactor 1; a regulating valve (not shown in the figure) is provided on the top of the reactor 1, and the material is conveniently transported by adjusting the valve; a controller is provided on the reactor 1, and the controller is connected to a dissolved oxygen meter 3, a nitrite detector 4, an ammonia nitrogen detector 5, and a pH detector 6. The controller is provided with a 5G communication module, and the detection data is transmitted to an external display terminal through the 5G communication module.

[0023] like Figures 1-8 As shown, a dissolved oxygen meter 3, a nitrite detector 4, an ammonia nitrogen detector 5, and a pH detector 6 are provided on the top of the reactor 1, and the contact ends of the dissolved oxygen meter 3, the nitrite detector 4, the ammonia nitrogen detector 5, and the pH detector 6 are located in the contact layer 12 and in contact with the wastewater inside, so as to detect the wastewater; the dissolved oxygen meter 3 measures the dissolved oxygen concentration (DO value) in the wastewater. Dissolved oxygen is a key condition for nitrification. Nitrifying bacteria (such as nitrite bacteria and nitrate bacteria) require oxygen to oxidize ammonia nitrogen into nitrite and nitrate. By monitoring the DO value, the aeration amount can be controlled (such as by delivering oxygen through the air inlet pipe 7) to ensure that the nitrification reaction is carried out in a suitable oxidizing environment, while avoiding excessive aeration that causes increased energy consumption; The nitrite detector 4 measures the concentration of nitrite (NO⁻-N) in wastewater. The core goal of the short-cut nitrification denitrification process is to oxidize ammonia nitrogen (NH⁺-N / NH⁺-N) to nitrite instead of nitrate, thereby shortening the reaction path and reducing carbon source demand. The nitrite concentration directly reflects the progress of the nitrification reaction and is a key indicator for determining whether the process has achieved "short-cut" results. The ammonia nitrogen detector 5 measures the concentration of ammonia nitrogen (NH3-N / NH4⁺-N) in wastewater. Ammonia nitrogen is the substrate of nitrification reaction. Its concentration change reflects the nitrification efficiency. By monitoring the ammonia nitrogen removal rate, the process's ability to treat nitrogen pollutants can be evaluated and parameters such as reaction time and pH value can be optimized. The pH detector 6 measures the acidity and alkalinity (pH value) of the wastewater. The pH value has a significant impact on the activity of nitrifying bacteria. The optimal nitrification reaction usually occurs in a neutral to weakly alkaline environment (pH≈7.5-8.5). By monitoring the pH value, the inlet liquid composition can be adjusted or alkaline substances can be added to maintain suitable conditions in the reactor to prevent acidification from causing a decrease in nitrification efficiency; an air inlet pipe 7 is fixedly connected to the top of the reactor 1, and a conveying component 8 is fixedly connected to the top of the reactor 1.

[0024] Further, such as Figures 1-8 As shown, the inner center of the air inlet pipe 7 is fixedly connected to an inner delivery pipe 71, and there is an interlayer between the air inlet pipe 7 and the delivery pipe 71. One-way valves are provided on the side walls of the air inlet pipe 7 and the delivery pipe 71, and oxygen is transported through the one-way valves. The interlayer is used to transport oxygen. The lower end of the air inlet pipe 7 is located in the inner area of ​​the reactor 1 and is provided with multiple groups of aeration holes 72 on the surface. The multiple groups of aeration holes 72 are connected to the interlayer. A rotating disk 73 is rotatably connected to the bottom of the inner delivery pipe 71, and one end of the rotating disk 73 is fixedly connected to the contact delivery pipe 74. The aeration holes 72 are connected to the rotating disk 73 and the contact delivery pipe 74. One end of the contact delivery pipe 74 is fixedly connected to the force rod 75, and the contact delivery pipe 74 is provided with aeration holes 72. The upper end of the force rod 75 is fixedly connected to the gear ring 13.

[0025] The gear ring 13 rotates while driving the force-bearing rod 75 to move. The force-bearing rod 75 contacts the side wall of the contact layer 12 and scrapes the side wall of the contact layer 12 to prevent sodium hydroxide from adhering to the side wall of the contact layer 12. Then, the force-bearing rod 75 drives the contact delivery pipe 74 to rotate. The contact delivery pipe 74 rotates around the center of the reactor 1. While adding sodium hydroxide, the contact delivery pipe 74 rotates circumferentially to stir the waste liquid inside. The mixing rod 834 stirs the waste liquid axially. When stirring is required in the reactor 1 alone, the adsorption magnetic ring is powered off, the driving motor 814 can independently drive the ring gear 13 to rotate, and the ring gear 13 drives the contact conveying pipe 74 and the force rod 75 to rotate to stir and mix the waste liquid inside; When it is necessary to add oxygen to the interior, the one-way valve provided on the side wall of the air inlet pipe 7 is connected to the external oxygen delivery equipment, and then the oxygen is delivered to the inner interlayer of the air inlet pipe 7 and then delivered to the reactor 1 through the aeration through-hole 72; at the same time, the inner delivery pipe 71 can be connected to the external oxygen conveyor, and then the oxygen enters the inner delivery pipe 71 and then enters the contact delivery pipe 74 through the rotating disk 73. Subsequently, the oxygen is delivered to the radial position in the reactor 1 through the aeration through-hole 72 on the contact delivery pipe 74, and then the radial position of the contact delivery pipe 74 is adjusted by the gear ring 13, and the radial position of the aeration of the waste liquid in the reactor 1 can be adjusted; Alternatively, oxygen is delivered while adding sodium hydroxide, so that the sodium hydroxide and oxygen can be dynamically delivered to the reactor 1 at the same time to react with the wastewater.

[0026] At the same time, if Figures 1-8 As shown, the conveying assembly 8 includes a vertical pipe 81, which is fixedly connected to the reactor 1, the top of the vertical pipe 81 is fixedly connected to the accommodating frame 82, the bottom of the vertical pipe 81 is fixedly connected to the auger frame 83 and is in communication with the auger frame 83, an auger is rotatably connected in the auger frame 83, the top of the auger is fixedly connected to the center of the driving gear 84, the auger frame 83 is fixedly connected to the base 85, the base 85 is fixedly connected to the side wall of the contact layer 12, the driving gear 84 is rotatably connected to the top of the auger frame 83, the driving gear 84 is transmission-connected to the bevel gear below the bevel gear set 86, the bevel gear set 86 is rotatably connected to the base 85, the bevel gear at the other end of the bevel gear set 86 is fixedly connected to the screw 88 at the center of the circle, the screw 88 is rotatably connected to the side wall of the limiting frame 87, and the limiting frame 87 is fixedly connected to the side wall of the base 85 The screw 88 is connected to the internal thread of the threaded sleeve 89, and the bottom of the threaded sleeve 89 is fixedly connected to the sliding rod 810. A T-shaped adjusting rod 811 is slidably connected in the T-shaped chute in the area below the sliding rod 810, and the arc chute 813 on the horizontal plate 812 is inserted into the bottom of the T-shaped adjusting rod 811. The horizontal plate 812 is fixedly connected to the limiting frame 87. The side wall of the reactor 1 is fixedly connected to a drive motor 814, and the output shaft of the drive motor 814 is fixedly connected to the center of the bevel gear at the upper end of the bevel gear set 86, and the drive gear 84 is meshed with the ring gear 13; a discharge port is provided at the bottom of the auger frame 83; a mixing rod 834 is rotatably connected to the bottom of the auger frame 83, and a plurality of groups of stirring blades are provided on the side wall of the mixing rod 834. The distance between the bottom of the mixing rod 834 and the bottom of the reactor is 10-20CM.

[0027] Specifically, the vertical pipe 81, the receiving frame 82, the auger frame 83 and the auger are made of stainless steel.

[0028] When the pH value needs to be adjusted, sodium hydroxide is placed in the receiving frame 82 in advance, and then the drive motor 814 is started to operate. The drive motor 814 drives the bevel gear set 86 to rotate, and the bevel gear set 86 drives the drive gear 84, the auger and the screw 88 to rotate. The drive gear 84 drives the ring gear 13 to rotate, and the ring gear 13 also drives another drive gear 84 (the adsorption magnetic ring is energized) to rotate. The drive gear 84 also drives another auger and the mixing rod 834 to rotate. The screw 88 drives the threaded sleeve 89 to move, and the threaded sleeve 89 drives the sliding rod 810 to move during the movement. The sliding rod 810 drives the T-shaped adjustment rod 811 below to slide in the arc-shaped sliding groove 813 on the horizontal plate 812, so that the T-shaped adjustment rod 811 slides left and right and moves forward and backward at the same time. The movement trajectory of the T-shaped adjustment rod 811 is a wavy line. The T-shaped adjustment rod 811 drives the contact rod 833 connected below to move, and the contact rod 833 pulls the adjustment delivery pipe 832 to open the adjustment angle (swing toward the center of the reactor 1) and swings it back and forth, so that the adjustment delivery pipe 832 receives the sodium hydroxide delivered by the auger. The delivery trajectory 815 of the sodium hydroxide is wavy and transported downward to the lower area of ​​the reactor 1 to mix with the waste liquid; Multiple groups of regulating delivery pipes 832 are equidistantly arranged on the inner circular side wall of the reactor 1 to deliver sodium hydroxide in a ring shape to the reaction area in the reactor 1.

[0029] Furthermore, Figures 1-8 As shown, the conveying assembly 8 is provided with multiple groups, and an adsorption magnetic ring is fixedly connected to the center of the driving gear 84 on the conveying assembly 8. The center of the adsorption magnetic ring is in contact with the bevel gear transmission shaft below the bevel gear group 86. The adsorption magnetic ring is energized to be magnetically attracted to the transmission shaft, so that the bevel gear group 86 drives the driving gear 84 and the auger to rotate through the adsorption magnetic ring.

[0030] Finally, if Figures 1-8 As shown, the discharge port below the auger frame 83 is connected to one end of the bellows 831, the other end of the bellows 831 is fixedly connected to the adjusting conveying pipe 832, the top side wall of the adjusting conveying pipe 832 is movably connected with a contact rod 833, and the other end of the contact rod 833 is movably connected to the bottom of the T-shaped adjusting rod 811; the T-shaped adjusting rod 811 is used to change the angle and front and rear position between the adjusting conveying pipe 832 and the auger frame 83.

[0031] like Figures 1-8 As shown, the principle of the test device for determining the parameters of the short-cut nitrification and denitrification process model provided in this embodiment is as follows: When measuring the wastewater, the wastewater is transported to the inside of the contact layer 12 through the liquid inlet pipe 2, and then the materials required for the reaction are put into the contact layer 12 through the regulating valve to mix with the waste liquid. The internal waste liquid is tested by the dissolved oxygen meter 3, the nitrite detector 4, the ammonia nitrogen detector 5, and the pH detector 6, and then the oxygen and sodium hydroxide are transported to the inside of the reactor 1 through the air inlet pipe 7 and the conveying component 8 for reaction.

[0032] The installation method, connection method or setting method disclosed in this embodiment are all common mechanical connection methods. Any connection method that can achieve its beneficial effects can be implemented, so the specific structural composition and working principle will not be described in detail in this embodiment.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A test device for determining parameters of a short-range nitrification and denitrification process model, comprising a reactor (1), wherein a contact layer (12) is fixedly connected to the reactor (1), an interlayer (11) is formed between the contact layer (12) and the inner wall of the reactor (1), the interlayer (11) is used to fill a heating solution, and a heating wire and a temperature sensor are fixedly connected to the interlayer (11); Its characteristics are: The top of the reactor (1) is fixedly connected to an air inlet pipe (7), and the top of the reactor (1) is fixedly connected to a conveying assembly (8); The inner center of the air inlet pipe (7) is fixedly connected to an inner delivery pipe (71), and an interlayer is provided between the air inlet pipe (7) and the delivery pipe (71), and the interlayer is used to deliver oxygen. The lower end of the air inlet pipe (7) is located in the inner area of ​​the reactor (1) and is provided with a plurality of aeration holes (72) on the surface, and the plurality of aeration holes (72) are connected to the interlayer. The bottom of the inner delivery pipe (71) is rotatably connected to a rotating disk (73), and one end of the rotating disk (73) is fixedly connected to the contact delivery pipe (74). The aeration holes (72) are connected to the rotating disk (73) and the contact delivery pipe (74). One end of the contact delivery pipe (74) is fixedly connected to a force rod (75), and the upper end of the force rod (75) is fixedly connected to the gear ring (13).

2. The test device for determining parameters of a short-cut nitrification and denitrification process model according to claim 1, characterized in that: The side wall of the contact layer (12) is rotatably connected to a gear ring (13). The upper side wall of the reactor (1) is embedded with a liquid inlet pipe (2). The liquid inlet pipe (2) is used to discharge waste liquid from the outside into the reactor (1) for reaction measurement. A drain valve (9) is provided below the side wall of the reactor (1) to facilitate the subsequent discharge of the measurement liquid in the reactor (1).

3. The test device for determining parameters of a short-cut nitrification and denitrification process model according to claim 2, characterized in that: The top of the reactor (1) is provided with a dissolved oxygen meter (3), a nitrite detector (4), an ammonia nitrogen detector (5), and a pH detector (6), and contact ends on the dissolved oxygen meter (3), the nitrite detector (4), the ammonia nitrogen detector (5), and the pH detector (6) are located in the contact layer (12) and in contact with the wastewater inside, so as to detect the wastewater.

4. The test device for measuring parameters of a shortcut nitrification and denitrification process model according to claim 1, characterized in that: The conveying assembly (8) includes a vertical pipe (81), the vertical pipe (81) is fixedly connected to the reactor (1), the top of the vertical pipe (81) is fixedly connected to the receiving frame (82), the bottom of the vertical pipe (81) is fixedly connected to the auger frame (83) and communicates with the inside of the auger frame (83), an auger is rotatably connected inside the auger frame (83), the top of the auger is fixedly connected to the center of the driving gear (84), and the auger frame (83) is fixedly connected to the base (85).

5. The test device for determining parameters of a short-cut nitrification and denitrification process model according to claim 4, characterized in that: The base (85) is fixedly connected to the side wall of the contact layer (12), the driving gear (84) is rotatably connected to the top of the auger frame (83), the driving gear (84) is transmission-connected to the bevel gear below the bevel gear set (86), the bevel gear set (86) is rotatably connected to the base (85), the bevel gear at the other end of the bevel gear set (86) is fixedly connected to the screw (88), and the screw (88) is rotatably connected to the side wall of the limiting frame (87).

6. A test device for measuring parameters of a shortcut nitrification and denitrification process model according to claim 5, characterized in that: The limiting frame (87) is fixedly connected to the side wall of the base (85), the screw (88) is connected to the inner thread of the threaded sleeve (89), the bottom of the threaded sleeve (89) is fixedly connected to the sliding rod (810), a T-shaped adjustment rod (811) is slidably connected in the T-shaped slot in the area below the sliding rod (810), the T-shaped adjustment rod (811) is slidably inserted into the arc slot (813) on the horizontal plate (812), and the horizontal plate (812) is fixedly connected to the limiting frame (87).

7. The test device for determining parameters of a shortcut nitrification and denitrification process model according to claim 4, characterized in that: A drive motor (814) is fixedly connected to the side wall of the reactor (1), the output shaft of the drive motor (814) is fixedly connected to the center of the bevel gear at the upper end of the bevel gear set (86), and the drive gear (84) is meshed with the ring gear (13); a discharge port is provided below the auger frame (83), and a mixing rod (834) is rotatably connected to the bottom of the auger frame (83), and a plurality of stirring blades are provided on the side wall of the mixing rod (834).

8. The test device for determining parameters of a shortcut nitrification and denitrification process model according to claim 1, characterized in that: The conveying assembly (8) is provided with a plurality of groups. An adsorption magnetic ring is fixedly connected to the center of the driving gear (84) on the conveying assembly (8). The center of the adsorption magnetic ring contacts the bevel gear transmission shaft below the bevel gear set (86). The adsorption magnetic ring is energized to be magnetically attracted to the transmission shaft, so that the bevel gear set (86) drives the driving gear (84) and the auger to rotate through the adsorption magnetic ring.

9. A test device for measuring parameters of a shortcut nitrification and denitrification process model according to claim 4, characterized in that: The discharge port below the auger frame (83) is connected to one end of a bellows (831), the other end of the bellows (831) is fixedly connected to an adjustable conveying pipe (832), a contact rod (833) is movably connected to the top side wall of the adjustable conveying pipe (832), and the other end of the contact rod (833) is movably connected to the bottom of the T-shaped adjusting rod (811).

10. A test device for measuring parameters of a shortcut nitrification and denitrification process model according to claim 6, characterized in that: The T-shaped adjustment rod (811) is used to change the angle and front-to-back position between the adjustment delivery pipe (832) and the auger frame (83).

Images