Intelligent sewage treatment system and treatment method for medical places

Abstract

The invention relates to the technical field of wastewater treatment, and particularly discloses an intelligent sewage treatment system and method for a medical place, the intelligent sewage treatment system comprises a stripping tower, a tail gas recovery tank, a sewage pipe, an alkali adding pump, a conveying pipe and an alkali liquor tank, the tail gas recovery tank is connected with the top end of an inner cavity of the stripping tower through a pipeline, and the tail gas recovery tank is provided with a water inlet pipe and a water outlet pipe; the sewage pipe is arranged at the top of the inner cavity of the air stripping tower, a water outlet of the alkali adding pump is connected with the sewage pipe through a pipeline, one end of the conveying pipe is arranged at a water inlet of the alkali adding pump, and the other end of the conveying pipe extends into the bottom end of the inner cavity of the alkali liquor tank. According to the device, CO2 in air is removed in advance by adopting a NaOH solution through the design of the front alkali liquor tank, so that the problem of pH fluctuation caused by a CO2 acidification system in a traditional air stripping process is fundamentally solved, the air stripping tower can stably maintain the optimal working condition that the pH is about 10.5, and the ammonia nitrogen removal efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, in particular to an intelligent sewage treatment system for medical sites and a treatment method. BACKGROUND

[0002] In the sewage treatment of medical sites (such as hospitals, laboratories, etc.), ammonia nitrogen is one of the common pollutants, and its effective removal is crucial for water quality compliance and environmental protection. At present, the stripping method has become one of the commonly used methods for removing ammonia nitrogen in wastewater because of its relatively simple process and high treatment efficiency. The core principle of this method is to adjust the pH to alkaline (usually maintained at 10.5-11) by adding alkali (such as NaOH) to wastewater, so that ammonium ions (NH4 + ) are converted to free ammonia (NH3), and then NH3 is stripped from the liquid phase to the gas phase by blowing air or steam, thereby achieving the removal of ammonia nitrogen.

[0003] However, the traditional stripping process has the following significant defects in actual application: 1. pH fluctuation problem caused by CO2: CO2 in the air will dissolve in wastewater during the stripping process and react with alkali to form carbonate (such as Na2CO3, NaHCO3), causing the pH value of the system to drop. In order to maintain the high pH environment required for optimal stripping, a large amount of alkali needs to be continuously supplemented, which not only increases the cost of reagents, but also may cause unstable ammonia nitrogen removal efficiency due to inaccurate pH control.

[0004] 2. Equipment scaling and clogging problem: Some processes use soda lime (mainly composed of CaO) to adjust pH, which can increase the alkalinity of the solution, but Ca 2+ is easy to react with CO2 to form CaCO3 precipitate, which will cause scaling and clogging of the stripping tower packing, pipelines and aeration equipment during long-term operation, seriously affecting the system operation efficiency, increasing maintenance cost and downtime frequency.

[0005] 3. Lack of intelligent control: The traditional system relies on manual monitoring of liquid level, pH and other parameters, which has problems such as response lag, large operation error, etc., and is difficult to adapt to water quality fluctuations in real time, resulting in unstable treatment effect, especially unable to meet the needs of medical sites for efficient, reliable and low-maintenance sewage treatment.

[0006] In view of the above problems, although there are attempts in the prior art to optimize the aeration method or improve the packing structure to improve the stripping efficiency, but they have not fundamentally solved the problem of CO2 interference with the pH of the system and scaling. Therefore, there is an urgent need for a sewage treatment system that can pre-treat CO2 in the air, stably maintain the pH of the system, avoid scaling and have intelligent control, to achieve efficient and stable removal of ammonia nitrogen in medical wastewater. SUMMARY

[0007] The medical place intelligent sewage treatment system and treatment method can solve the problems of device fouling, easy device clogging and low stripping efficiency in the prior art.

[0008] To achieve the above object, the present application provides the following technical scheme: a medical place intelligent sewage treatment system, comprising: a stripping tower, a tail gas recovery tank, a sewage pipe, an alkali adding pump, a conveying pipe, an alkali tank, an alkali adding pipe, an air dehydration mechanism, a liquid level monitoring mechanism, an aeration pipe, a uniform water distributor, an atomizing nozzle, a stirring and mixing assembly, an air pump and a pH sensor, the tail gas recovery tank is connected with the top end of the inner cavity of the stripping tower through a pipeline, the tail gas recovery tank is provided with a water inlet pipe and a drain pipe, the sewage pipe is arranged at the top of the inner cavity of the stripping tower, the drain port of the alkali adding pump is connected with the sewage pipe through a pipeline, one end of the conveying pipe is arranged at the water inlet of the alkali adding pump, the other end of the conveying pipe extends into the bottom end of the inner cavity of the alkali tank, the alkali adding pipe is arranged at the top of the front side of the alkali tank, the air dehydration mechanism is arranged at the top end of the alkali tank, the liquid level monitoring mechanism is arranged at the rear side of the inner cavity of the alkali tank, the aeration pipe is arranged at the bottom end of the inner cavity of the alkali tank, one end of the aeration pipe extends out of the inner cavity of the alkali tank, the other end of the conveying pipe is located below the aeration pipe, the uniform water distributor is arranged at the top of the inner cavity of the alkali tank, one end of the uniform water distributor extends out of the inner cavity of the alkali tank, the number of the atomizing nozzles is several, the several atomizing nozzles are all arranged at the bottom end of the uniform water distributor, the stirring and mixing assembly is arranged in the middle part of the inner cavity of the alkali tank, the stirring and mixing assembly can stir and mix the liquid in the inner cavity of the alkali tank, the air inlet of the air pump is connected with the air dehydration mechanism through a pipeline, the air outlet of the air pump is connected with the bottom end of the inner cavity of the stripping tower through a pipeline, and the pH sensor is arranged at the bottom of the inner cavity of the alkali tank.

[0009] Further, the air dehydration mechanism comprises: a dehydration tank, a condensation dehydration assembly and a reflux assembly, the dehydration tank is arranged at the top right side of the alkali tank, the inner cavity left side bottom of the dehydration tank is connected with the top end of the inner cavity of the alkali tank through a pipeline, the condensation dehydration assembly is arranged in the middle part of the inner cavity of the dehydration tank, and the reflux assembly is arranged at the bottom right side of the inner cavity of the dehydration tank.

[0010] Further, the condensation dehydration assembly comprises: a semiconductor refrigeration sheet and a heat sink, the semiconductor refrigeration sheet is arranged in the middle part of the inner cavity of the dehydration tank, the heating end of the semiconductor refrigeration sheet is located at the left side of the inner cavity of the dehydration tank, the refrigeration end of the semiconductor refrigeration sheet is located at the right side of the inner cavity of the dehydration tank, the number of the heat sinks is two, and the two heat sinks are arranged at the left and right sides of the semiconductor refrigeration sheet respectively.

[0011] Further, the backflow assembly comprises a backflow pipe, a sealing piston, a piston rod and a first spring, one end of the backflow pipe is arranged at the right bottom of the inner cavity of the dehydration tank, the other end of the backflow pipe extends into the top of the inner cavity of the lye tank, the sealing piston is slidably and fittingly inserted into the right bottom of the inner cavity of the dehydration tank, the backflow pipe is below the sealing piston, the top end of the piston rod is arranged at the middle of the bottom end of the sealing piston, the bottom end of the piston rod slidably extends out of the bottom end of the dehydration tank, the first spring is sleeved on the outer wall of the piston rod, the bottom end of the first spring is clamped to the bottom end of the inner cavity of the dehydration tank, and the top end of the first spring is clamped to the bottom end of the sealing piston.

[0012] Further, the liquid level monitoring mechanism comprises a sleeve, a floating ball, a first magnet, a second magnet, a telescopic rod, a signal block and a liquid level limiting assembly, the sleeve is arranged at the top rear side of the lye tank, the bottom end of the sleeve extends into the inner cavity of the lye tank, the floating ball is slidably sleeved on the bottom of the outer wall of the sleeve, the first magnet is arranged in the inner cavity of the floating ball, the second magnet is slidably embedded in the bottom of the inner cavity of the sleeve, the positions of the first magnet and the second magnet correspond to each other, the first magnet and the second magnet are magnetically attracted to each other, the telescopic rod is arranged at the top end of the second magnet, the top end of the telescopic rod slidably extends out of the top end of the sleeve, the signal block is arranged at the top end of the telescopic rod, and the liquid level limiting assembly is arranged at the top rear side of the lye tank.

[0013] Further, the liquid level limiting assembly comprises a sliding rail, a clamping groove, a sliding block, a second spring, a clamping ball and a proximity switch, the sliding rail is arranged at the top rear side of the lye tank, a plurality of clamping grooves are equidistantly arranged in the inner cavity of the sliding rail in the up-down direction, the number of the sliding blocks is two, the two sliding blocks are respectively and slidably and fittingly inserted into the inner cavity of the sliding rail on the upper and lower sides, the left and right sides of the sliding block are provided with extrusion grooves, the second spring is embedded in the inner cavity of the extrusion groove, one end of the second spring is clamped to the inner wall of the extrusion groove, a part of the clamping ball is slidably embedded in the inner cavity of the extrusion groove, another part of the clamping ball is fittingly inserted into the inner cavity of the clamping groove corresponding to the position, the other end of the second spring is clamped to the outer wall of the clamping ball, and the proximity switch is arranged in the inner cavity of the sliding block. The positions of the proximity switch and the signal block correspond to and match each other.

[0014] Further, the length of the clamping ball extending into the inner cavity of the clamping groove is less than the radius thereof.

[0015] According to an intelligent sewage treatment system for medical places, an intelligent sewage treatment method for medical places is provided. S1, alkali pretreatment: by adding alkali pipe to the alkali tank, air pipe is connected to air, CO2 in air reacts with NaOH to generate Na2CO3, atomizing nozzle sprays NaOH solution to air for secondary alkali washing, and decarburization is strengthened; S2, air dehydration reflux: after decarburization, air enters the dehydration tank, and the semiconductor refrigeration piece first heats and then cools the air, condenses water vapor and a small amount of NaOH droplets, and returns to the alkali tank through the reflux pipe, and dry air is sent into the bottom of the stripping tower by the air pump; S3, stripping treatment: high ammonia nitrogen sewage enters the stripping tower top through the sewage pipe, and the decarburized air is introduced into the bottom in countercurrent contact, NH3 escapes from the sewage and enters the tail gas recovery tank through the tower top pipe, and is absorbed by tap water to generate ammonia water; S4, mixed solution transportation: NaOH / Na2CO3 solution in the alkali tank is sent to the sewage pipe by the alkali pump and the delivery pipe, mixed with high ammonia nitrogen sewage, and then enters the stripping tower to maintain the pH in the tower; S5, intelligent control: Liquid level monitoring: the float ball rises and falls with the liquid level, drives the signal block through the first magnet and the second magnet, triggers the proximity switch to control the start and stop of the alkali pipe, and automatically adjusts the liquid level of the alkali tank; pH value adjustment: the pH value sensor monitors in real time, and if the pH value decreases to generate NaHCO3, NaOH is automatically added, the pH value is increased by the reaction NaHCO3+NaOH→Na2CO3+H2O, and the stripping efficiency is ensured.

[0016] Compared with the prior art, the beneficial effects of the present application are: (1) the proximity switch can be adjusted in height by sliding adjustment, the highest liquid level and the lowest liquid level in the inner cavity of the alkali tank can be adjusted, NaOH solution is transported into the inner cavity of the alkali tank through the alkali pipe, as the liquid level of NaOH solution in the inner cavity of the alkali tank rises, the float ball will move upward under the action of buoyancy, the float ball moving upward can drive the signal block to move upward through the telescopic rod under the action of the first magnet and the second magnet, until the signal block moves to the position of the proximity switch located above, the proximity switch located above detects the signal block, and the transportation of NaOH solution into the inner cavity of the alkali tank through the alkali pipe can be stopped, and tap water is added into the inner cavity of the tail gas recovery tank through the water inlet pipe of the tail gas recovery tank.

[0017] (2) In this invention, an external blower is connected through an aeration pipe, an external delivery pump is connected through a uniform water distributor, and a sewage pump is connected through a sewage pipe. Air is delivered into the inner cavity of the alkali tank through the aeration pipe for aeration, and NaOH solution is sprayed into the inner cavity of the alkali tank through the uniform water distributor. CO2 in the air reacts with the NaOH solution in the alkali tank to generate Na2CO3. Since the density of air is low, the air that has been alkali washed to remove CO2 will float above the inner cavity of the alkali tank. The NaOH solution sprayed by the uniform water distributor can be used to wash the air again. The stirring and mixing components can be used to stir and mix the residual NaOH solution in the inner cavity of the alkali tank and the Na2CO3 generated by the reaction with CO2 in the air. The residual NaOH solution in the inner cavity of the alkali tank and the Na2CO3 generated by the reaction with CO2 in the air are transported to the inner cavity of the sewage pipe through the alkali pump and mixed with the high ammonia nitrogen sewage in the inner cavity of the sewage pipe and added to the stripping tower.

[0018] (3) In this invention, the air washed by alkali continues to float upward along the inner cavity of the alkali tank and flows into the inner cavity of the dehydration tank through the pipeline. When the air flows into the inner cavity of the dehydration tank, it can be heated by the heating end of the semiconductor cooling chip when it flows into the inner cavity of the dehydration tank. When the air flows to the inner cavity of the dehydration tank, it can be cooled by the cooling end of the semiconductor cooling chip. This can promote the condensation of water vapor and trace NaOH droplets in the air and remove them from the air. The water vapor and trace NaOH droplets condensed in the air flow back to the inner cavity of the alkali tank through the return pipe. The air after dehydration can be introduced into the bottom of the inner cavity of the stripping tower by the action of the air pump. At this time, the high ammonia nitrogen wastewater is fully in contact with the air washed by alkali and the packing surface in the stripping tower from top to bottom, so that NH3 continuously escapes from the wastewater. Finally, NH3 enters the tail gas recovery tank containing tap water from the pipeline at the top of the stripping tower for absorption.

[0019] (4) The present invention can monitor the liquid level in the inner cavity of the alkali tank in real time through the cooperation of the float, the first magnet, the second magnet, the signal block and the proximity switch. When the liquid level is too low, NaOH solution can be delivered into the inner cavity of the alkali tank through the alkali adding pipe, thereby increasing the liquid level in the inner cavity of the alkali tank. The pH value in the inner cavity of the alkali tank can be detected by the pH value sensor.

[0020] (5) This device uses a pre-positioned alkaline tank to pre-remove CO2 from the air with NaOH solution, which fundamentally solves the pH fluctuation problem caused by the CO2 acidification system in the traditional stripping process. This allows the stripping tower to maintain the optimal operating conditions with a pH of around 10.5, significantly improving the ammonia nitrogen removal efficiency. Compared with the traditional soda lime process, this technology completely avoids the CaCO3 precipitation and scaling phenomenon, achieving a highly efficient, stable, and economical ammonia nitrogen removal effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0022] Figure 1 Structure diagram of the present application; Figure 2 Exploded view of the present application; Figure 3 Exploded view of the lye tank; Figure 4 Structure diagram of the air dehydration mechanism; Figure 5 Structure diagram of the liquid level monitoring mechanism; Figure 6 Front view of the air dehydration mechanism; Figure 7 Exploded view of the air dehydration mechanism; Figure 8 Exploded view of the liquid level monitoring mechanism; Figure 9 Structure diagram of the first magnet; Figure 10 Enlarged view of A of Figure 3 ; Figure 11 Enlarged view of B of Figure 8 ; Figure 12 Enlarged view of C of Figure 8 .

[0023] The components represented by the respective numbers in the drawings are listed as follows: 1, stripping tower; 2, tail gas recovery tank; 3, sewage pipe; 4, alkali adding pump; 5, conveying pipe; 6, lye tank; 7, alkali adding pipe; 8, air dehydration mechanism; 81, dehydration box; 82, backflow pipe; 83, semiconductor refrigeration sheet; 84, heat dissipation sheet; 85, sealing piston; 86, piston rod; 87, first spring; 9, liquid level monitoring mechanism; 91, sleeve; 92, floating ball; 93, first magnet; 94, second magnet; 95, telescopic rod; 96, signal block; 97, sliding rail; 98, clamping groove; 99, sliding block; 910, extrusion groove; 911, second spring; 912, clamping ball; 913, proximity switch; 10, aeration pipe; 11, uniform water distributor; 12, atomizing nozzle; 13, motor; 14, spiral belt; 15, air pump; 16, pH sensor. DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts, fall within the protection scope of the present application.

[0025] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] Reference Figures 1-12The utility model provides an intelligent sewage treatment system for medical place, including: blow -off tower 1, tail gas recovery tank 2, sewage pipe 3, add alkali pump 4, conveying pipe 5, lye tank 6, add alkali pipe 7, air dewatering mechanism 8, liquid level monitoring mechanism 9, aeration pipe 10, even water distributor 11, atomizing nozzle 12, stirring mixing subassembly, air pump 15 and PH sensor 16, tail gas recovery tank 2 is connected with the inner chamber top end of blow -off tower 1 through the pipeline, tail gas recovery tank 2 is provided with inlet pipe and drain pipe, tail gas recovery tank 2 is used to carry out waste gas recovery, sewage pipe 3 sets up in the inner chamber top of blow -off tower 1, can transport high ammonia nitrogen sewage to the inner chamber of blow -off tower 1 through sewage pipe 3, the drain of add alkali pump 4 is connected with sewage pipe 3 through the pipeline, add alkali pump 4 is prior art, here does not too much repeat, add alkali pump 4 is used to transport lye here, one end of conveying pipe 5 is set up in the water inlet of add alkali pump 4, the other end of conveying pipe 5 extends into the inner chamber bottom end of lye tank 6, add alkali pipe 7 is set up in the top of lye tank 6 front side, air dewatering mechanism 8 is set up in the top of lye tank 6, air dewatering mechanism 8 is used to carry out dewatering treatment to air, liquid level monitoring mechanism 9 is set up in the inner chamber rear side of lye tank 6, liquid level monitoring mechanism 9 is used to monitor the liquid level in the inner chamber of lye tank 6, aeration pipe 10 is set up in the inner chamber bottom end of lye tank 6, one end of aeration pipe 10 extends out of the inner chamber of lye tank 6, the other end of conveying pipe 5 is located below aeration pipe 10, aeration pipe 10 is prior art, here does not too much repeat, aeration pipe 10 is used to convey air to the inner chamber of lye tank 6 here, even water distributor 11 is set up in the inner chamber top of lye tank 6, one end of even water distributor 11 extends out of the inner chamber of lye tank 6, even water distributor 11 is prior art, here does not too much repeat, even water distributor 11 is used to spray NaOH solution evenly in the inner chamber of lye tank 6 here, the number of atomizing nozzle 12 is several, several atomizing nozzle 12 all are set up in the bottom end of even water distributor 11, atomizing nozzle 12 is prior art, here does not too much repeat, atomizing nozzle 12 is used to spray NaOH solution here, stirring mixing subassembly sets up in the inner chamber middle part of lye tank 6, stirring mixing subassembly can carry out stirring mixing to the liquid in the inner chamber of lye tank 6, the air inlet of air pump 15 is connected with air dewatering mechanism 8 through the pipeline, the air outlet of air pump 15 is connected with the inner chamber bottom end of blow -off tower 1 through the pipeline, air pump 15 is prior art, here does not too much repeat, air pump 15 is used to convey air after lye washing here, PH sensor 16 is set up in the inner chamber bottom of lye tank 6, PH sensor 16 is prior art, here does not too much repeat, PH sensor 16 is used to monitor the PH value in the inner chamber of lye tank 6 here.

[0027] Stirring mixing subassembly includes: motor 13 and screw belt 14, motor 13 screw connection is in the top middle part of lye tank 6, the top end of screw belt 14 is locked in the output end of motor 13 through the shaft coupling, and the bottom end of screw belt 14 rotatably extends into the inner chamber of lye tank 6.

[0028] Specifically, the air dewatering mechanism 8 comprises a dewatering box 81, a condensation dewatering assembly and a reflux assembly. The dewatering box 81 is arranged at the top right side of the lye tank 6. The inner cavity left side bottom of the dewatering box 81 is connected with the inner cavity top end of the lye tank 6 through a pipeline. The condensation dewatering assembly is arranged in the middle part of the inner cavity of the dewatering box 81. The condensation dewatering assembly can condense and dewater the air. The reflux assembly is arranged at the inner cavity bottom right side of the dewatering box 81. The reflux assembly can reflux the condensed water vapor and trace NaOH liquid drops into the inner cavity of the lye tank 6.

[0029] Specifically, the condensation dewatering assembly comprises a semiconductor refrigeration sheet 83 and a heat sink 84. The semiconductor refrigeration sheet 83 is arranged in the middle part of the inner cavity of the dewatering box 81. The heating end of the semiconductor refrigeration sheet 83 is located at the left side of the inner cavity of the dewatering box 81. The refrigeration end of the semiconductor refrigeration sheet 83 is located at the right side of the inner cavity of the dewatering box 81. The semiconductor refrigeration sheet 83 is a prior art, which will not be described in detail here. The semiconductor refrigeration sheet 83 is used here to condense and dewater the air. The number of the heat sink 84 is two. The two heat sinks 84 are arranged on the left and right sides of the semiconductor refrigeration sheet 83 respectively. The heat sink 84 is used to increase the heating and refrigeration area and effect of the semiconductor refrigeration sheet 83.

[0030] Specifically, the reflux assembly comprises a reflux pipe 82, a sealing piston 85, a piston rod 86 and a first spring 87. One end of the reflux pipe 82 is arranged at the inner cavity right side bottom of the dewatering box 81. The other end of the reflux pipe 82 extends into the inner cavity top part of the lye tank 6. The sealing piston 85 is slidably and adaptively inserted into the inner cavity right side bottom of the dewatering box 81. The reflux pipe 82 is located below the sealing piston 85. The top end of the piston rod 86 is arranged at the middle part of the bottom end of the sealing piston 85. The bottom end of the piston rod 86 slidably extends out of the bottom end of the dewatering box 81. The first spring 87 is sleeved on the outer wall of the piston rod 86. The bottom end of the first spring 87 is clamped to the inner cavity bottom end of the dewatering box 81. The top end of the first spring 87 is clamped to the bottom end of the sealing piston 85. The first spring 87 is a rotary spring. After being extruded or stretched by external force, the first spring 87 elastically deforms. After the external force is removed, the first spring 87 returns to the initial state. The first spring 87 is used here to support the sealing piston 85.

[0031] Specifically, the liquid level monitoring mechanism 9 comprises a sleeve 91, a floating ball 92, a first magnet 93, a second magnet 94, an extension rod 95, a signal block 96 and a liquid level limiting assembly. The sleeve 91 is arranged at the rear top of the caustic tank 6, the bottom end of the sleeve 91 extends into the inner cavity of the caustic tank 6, the floating ball 92 is slidably sleeved on the bottom of the outer wall of the sleeve 91, the floating ball 92 can be moved up and down along the outer wall of the sleeve 91 under the action of the buoyancy of the liquid in the inner cavity of the caustic tank 6, the first magnet 93 is arranged in the inner cavity of the floating ball 92, the second magnet 94 is slidably embedded in the inner cavity of the bottom of the sleeve 91, the position of the first magnet 93 corresponds to the position of the second magnet 94, the first magnet 93 and the second magnet 94 are magnetically attracted, the cooperation between the first magnet 93 and the second magnet 94 can promote the movement of the extension rod 95 along with the floating ball 92, the extension rod 95 is arranged at the top end of the second magnet 94, the top end of the extension rod 95 slidably extends out of the top end of the sleeve 91, the signal block 96 is arranged at the top end of the extension rod 95, and the liquid level limiting assembly is arranged at the rear top of the caustic tank 6.

[0032] Specifically, the liquid level limiting assembly comprises a sliding rail 97, a clamping groove 98, a sliding block 99, an extrusion groove 910, a second spring 911, a clamping ball 912 and a proximity switch 913. The sliding rail 97 is arranged at the rear top of the caustic tank 6, a plurality of clamping grooves 98 are arranged on the left and right sides of the inner cavity of the sliding rail 97 in the up-down direction at equal intervals, the number of sliding blocks 99 is two, and the two sliding blocks 99 are respectively slidably and adaptively inserted into the inner cavity of the sliding rail 97 on the upper and lower sides, the left and right sides of the sliding block 99 are provided with the extrusion groove 910, the second spring 911 is embedded in the inner cavity of the extrusion groove 910, one end of the second spring 911 is clamped to the inner wall of the extrusion groove 910, the second spring 911 is a rotary spring, which is elastically deformed after being extruded or stretched by external force, and returns to the initial state after the external force is removed, the second spring 911 is used herein to extrude the clamping ball 912 into the inner cavity of the clamping groove 98, a part of the clamping ball 912 is slidably embedded in the inner cavity of the extrusion groove 910, another part of the clamping ball 912 is adaptively inserted into the inner cavity of the clamping groove 98 corresponding to the position, the other end of the second spring 911 is clamped to the outer wall of the clamping ball 912, the cooperation between the clamping ball 912 and the clamping groove 98 can fix the position of the sliding block 99, the length of the clamping ball 912 extending into the inner cavity of the clamping groove 98 is less than its radius, so that the sliding block 99 can slide up and down along the inner cavity of the sliding rail 97, the proximity switch 913 is arranged in the inner cavity of the sliding block 99, the proximity switch 913 corresponds to and matches the position of the signal block 96, the proximity switch 913 is a prior art, which will not be described in detail here, and the cooperation between the proximity switch 913 and the signal block 96 can control the delivery of NaOH solution into the inner cavity of the caustic tank 6.

[0033] Working principle: Step one, in use, the sewage pipe 3 and the outside sewage pump connection, the aeration pipe 10 and the outside fan connection, the alkali pipe 7 and the uniform water distributor 11 are connected with the outside lye delivery pump respectively, the tail gas recovery tank 2 is filled with appropriate tap water, according to the actual situation, the liquid level in the inner cavity of the lye tank 6 is required to slide along the inner cavity of the slide rail 97, the sliding block 99 slides up and down along the inner cavity of the slide rail 97, the inner wall of the clamping groove 98 can be used to extrude the clamping ball 912 to slide into the inner cavity of the extrusion groove 910, and the second spring 911 is extruded to produce elastic deformation, until the clamping ball completely separates from the inner cavity of the clamping groove 98, when the sliding block 99 floats up and down along the inner cavity of the slide rail 97, the proximity switch 913 can be moved up and down, until the two proximity switches 913 are moved to the appropriate position, at this time, under the action of the spring force of the second spring 911, the clamping ball 912 can be pushed into the inner cavity of the clamping groove 98 corresponding to its position, so that the cooperation between the clamping ball 912 and the clamping groove 98 can fix the position of the sliding block 99, thereby fixing the position of the proximity switch 913, the alkali pipe 7 sends NaOH solution to the inner cavity of the lye tank 6, as the NaOH solution in the inner cavity of the lye tank 6 gradually increases, the liquid level of the NaOH solution in the inner cavity of the lye tank 6 gradually rises, under the action of buoyancy, the float ball 92 can be lifted along with the rise of the liquid level of the NaOH solution, the upward sliding of the float ball 92 along the outer wall of the sleeve pipe 91 can use the cooperation between the first magnet 93 and the second magnet 94 to drive the signal block 96 to move upward through the telescopic rod 95, until the signal block 96 moves to the upper proximity switch 913, the upper proximity switch 913 senses the signal block 96, thereby stopping the continuous delivery of NaOH solution into the inner cavity of the lye tank 6; Step two, through the cooperation between the uniform water distributor 11 and the atomizing nozzle 12, NaOH solution can be uniformly sprayed into the inner cavity of the lye tank 6, through the aeration pipe 10, air can be delivered into the NaOH solution in the inner cavity of the lye tank 6, at the same time, start the motor 13, use the output end of the motor 13 to drive the screw belt 14 to rotate, because the density of air is small, air will float upwards in the NaOH solution, thereby CO2 in the air will react with NaOH solution to generate Na2CO3 solution (2NaOH+CO2→Na2CO3+H2O), until the air floats out of the NaOH solution, the sprayed NaOH solution can wash the air again, thereby strengthening the removal effect of CO2 in the air, after the air is washed, it can flow into the inner cavity of the dehydration tank 81 through the pipeline, at the same time, the rotating screw belt 14 can stir and mix the solution remaining in the inner cavity of the lye tank 6, and through the cooperation between the alkali pump 4 and the delivery pipe 5, the residual lye in the inner cavity of the lye tank 6 can be delivered to the inner cavity of the sewage pipe 3 through the pipeline, and mixed with the high ammonia nitrogen wastewater in the inner cavity of the sewage pipe 3 and delivered to the inner cavity top end of the stripping tower 1. Step three, start the semiconductor refrigeration piece 83, because the air flowing into the inner cavity of the dehydration tank 81 after the alkali washing, the air will be mixed with some water vapor and trace NaOH droplets, when the air flowing into the inner cavity of the dehydration tank 81 flows to the left side of the inner cavity of the dehydration tank 81, the heating end of the semiconductor refrigeration piece 83 can heat it to improve the water capacity of the air, and as the air flows along the inner cavity of the dehydration tank 81, it flows to the right side of the inner cavity of the dehydration tank 81, the cooling end of the semiconductor refrigeration piece 83 can condense and dehydrate the air, because the air is heated before being condensed and dehydrated, the cooling temperature difference can be expanded, the condensation efficiency can be improved, and the dehydration time can be shortened. The dehydrated air can flow to the bottom end of the inner cavity of the blow-off tower 1 through the pipeline under the action of the air pump 15. At this time, the high ammonia nitrogen sewage in the blow-off tower is in contact with the air washed by alkali from top to bottom in the blow-off tower and on the surface of the filler in the blow-off tower, so that NH3 continuously escapes from the sewage. Finally, NH3 enters the tail gas recovery tank 2 filled with tap water from the pipeline at the top end of the blow-off tower for absorption. Because NH3 is easily soluble in water, NH3 is dissolved in tap water in the inner cavity of the tail gas recovery tank 2 to generate ammonia water (NH3·H2O). The water vapor and trace NaOH droplets condensed in the dehydration tank 81 will drop on the sealing piston 85. After a certain amount of condensed water and NaOH droplets accumulate on the sealing piston 85, the sealing piston 85 can be pressed downward under the action of gravity, and the first spring 87 can be elastically deformed. Until the sealing piston 85 moves to the lower side of the reflux pipe 82, the condensed water and NaOH droplets accumulated on the sealing piston 85 can flow back to the inner cavity of the lye tank 6 through the reflux pipe 82; Step four, the liquid level monitoring mechanism 9 can monitor the height of the liquid level in the inner cavity of the lye tank 6 in real time. When the liquid level in the inner cavity of the lye tank 6 decreases, the float ball 92 will descend, so that the signal block 96 can be moved downward through the telescopic rod 95 under the action of the first magnet 93 and the second magnet 94. When the signal block 96 moves to the proximity switch 913 located below, the proximity switch 913 located below detects the signal block 96, and the NaOH solution can be transported to the inner cavity of the lye tank 6 through the alkali adding pipe 7. As the liquid level in the inner cavity of the lye tank 6 rises, the signal block 96 will move upward until the signal block 96 moves to the proximity switch 913 located above. When the signal block 96 is detected by the proximity switch 913 located above, the transportation of NaOH solution to the inner cavity of the lye tank 6 is stopped, so that the effect of removing CO2 from air can be affected by the low liquid level of NaOH solution in the inner cavity of the lye tank 6, and the low content of NaOH solution in the inner cavity of the lye tank 6 can be prevented from generating NaHCO3 (Na2CO3+CO2+H2O=2NaHCO3); Step five, the PH value sensor 16 can be used to monitor the PH value of the liquid in the alkali tank 6 in real time. Since NaHCO3 is a weak alkaline salt (pH≈8.3), its PH value is much lower than that of NaOH (pH≈13) or Na2CO3 (pH≈11). If the PH value of the liquid in the alkali tank 6 is low, it will cause the pH of the sewage in the stripping tower to be unable to be stably maintained in the optimal range of 10.5-11 (NH3 stripping requires high pH), resulting in a decrease in the efficiency of ammonia nitrogen (NH3) escaping into the gas phase. Therefore, when the PH value sensor detects that the PH value in the alkali tank 6 is low, it indicates that a large amount of NaHCO3 has been generated in the alkali tank 6. At this time, NaOH solution can be delivered to the inner cavity of the alkali tank 6 through the alkali feeding pipe 7. NaOH solution reacts with NaHCO3 to generate Na2CO3 (NaHCO3+NaOH→Na2CO3+H2O), thereby increasing the PH value of the solution in the alkali tank 6 and improving the efficiency of ammonia nitrogen (NH3) escaping into the gas phase in the stripping tower 1; Step six, the device uses NaOH solution to remove CO2 in the air in advance through the design of the pre-alkali tank, which fundamentally solves the problem of pH fluctuation caused by the CO2 acidification system in the traditional stripping process, so that the stripping tower 1 can stably maintain the optimal working condition of pH around 10.5, significantly improve the ammonia nitrogen removal efficiency, and completely avoid the CaCO3 precipitation and scaling phenomenon compared with the traditional lime process, realizing high-efficiency, stable and economical ammonia nitrogen removal effect.

[0034] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and do not limit the application to the specific embodiments. Obviously, many modifications and changes can be made according to the content of the present application. The embodiments are selected and described in detail in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. An intelligent wastewater treatment system for medical facilities, characterized in that, include: Blowout tower (1); The exhaust gas recovery tank (2) is connected to the top of the inner cavity of the stripping tower (1) through a pipeline. The exhaust gas recovery tank (2) is equipped with a water inlet pipe and a water outlet pipe. Wastewater pipe (3), the wastewater pipe (3) is located at the top of the inner cavity of the stripping tower (1); Alkali pump (4), the drain outlet of which is connected to sewage pipe (3) via a pipeline; A delivery pipe (5) is provided at one end of the delivery pipe (5) at the inlet of the alkali pump (4); The other end of the conveying pipe (5) extends into the bottom of the inner cavity of the alkali tank (6); Alkali addition pipe (7), the alkali addition pipe (7) is located on the top front side of the alkali tank (6); An air dehydration mechanism (8) is provided at the top of the alkali tank (6); Liquid level monitoring mechanism (9), the liquid level monitoring mechanism (9) is located on the rear side of the inner cavity of the alkali tank (6); An aeration pipe (10) is provided at the bottom of the inner cavity of the alkali tank (6). One end of the aeration pipe (10) extends out of the inner cavity of the alkali tank (6), and the other end of the conveying pipe (5) is located below the aeration pipe (10). Uniform water distributor (11) is provided at the top of the inner cavity of the alkali tank (6), and one end of the uniform water distributor (11) extends out of the inner cavity of the alkali tank (6). Atomizing nozzle (12), the number of atomizing nozzles (12) is several, and several atomizing nozzles (12) are all arranged at the bottom end of the uniform water distributor (11); A stirring and mixing assembly is provided in the middle of the inner cavity of the alkali tank (6), and the stirring and mixing assembly is capable of stirring and mixing the liquid in the inner cavity of the alkali tank (6).

2. The intelligent wastewater treatment system for medical facilities according to claim 1, characterized in that: The intelligent wastewater treatment system for medical facilities also includes: Air pump (15), the air inlet of the air pump (15) is connected to the air dehydration mechanism (8) through a pipeline, and the exhaust port of the air pump (15) is connected to the bottom of the inner cavity of the stripping tower (1) through a pipeline. pH sensor (16) is located at the bottom of the inner cavity of the alkali tank (6).

3. The intelligent wastewater treatment system for medical facilities according to claim 2, characterized in that: The air dehydration mechanism (8) includes: Dehydration tank (81), the dehydration tank (81) is located on the top right side of the alkali tank (6), and the bottom left side of the inner cavity of the dehydration tank (81) is connected to the top of the inner cavity of the alkali tank (6) through a pipeline; A condensation dehydration assembly is disposed in the middle of the inner cavity of the dehydration tank (81); A reflux assembly is located on the right side of the bottom of the inner cavity of the dehydration tank (81).

4. The intelligent wastewater treatment system for medical facilities according to claim 3, characterized in that: The condensation and dehydration assembly includes: A semiconductor cooling chip (83) is disposed in the middle of the inner cavity of the dehydration tank (81). The heating end of the semiconductor cooling chip (83) is located on the left side of the inner cavity of the dehydration tank (81), and the cooling end of the semiconductor cooling chip (83) is located on the right side of the inner cavity of the dehydration tank (81). The heat sink (84) is two in number, and the two heat sinks (84) are respectively disposed on the left and right sides of the semiconductor cooling chip (83).

5. The intelligent wastewater treatment system for medical facilities according to claim 4, characterized in that: The reflow component includes: A return pipe (82) is provided at one end of the bottom right side of the inner cavity of the dehydration tank (81), and the other end of the return pipe (82) extends into the top of the inner cavity of the alkali tank (6); A sealing piston (85) is slidably fitted into the bottom right side of the inner cavity of the dehydration tank (81), and the return pipe (82) is located below the sealing piston (85). The piston rod (86) has its top end located at the middle of the bottom end of the sealing piston (85), and the bottom end of the piston rod (86) extends slidably out of the bottom end of the dehydration tank (81). The first spring (87) is sleeved on the outer wall of the piston rod (86), the bottom end of the first spring (87) is engaged with the bottom end of the inner cavity of the dehydration tank (81), and the top end of the first spring (87) is engaged with the bottom end of the sealing piston (85).

6. The intelligent wastewater treatment system for medical facilities according to claim 5, characterized in that: The liquid level monitoring mechanism (9) includes: A sleeve (91) is provided at the rear top of the alkali tank (6), and the bottom end of the sleeve (91) extends into the inner cavity of the alkali tank (6). A float (92) is slidably fitted onto the bottom of the outer wall of the sleeve (91); The first magnet (93) is disposed in the inner cavity of the float (92); The second magnet (94) is slidably embedded in the bottom of the inner cavity of the sleeve (91). The positions of the first magnet (93) and the second magnet (94) correspond to each other. The first magnet (93) and the second magnet (94) are magnetically attracted to each other. Telescopic rod (95), the telescopic rod (95) is disposed at the top end of the second magnet (94), and the top end of the telescopic rod (95) extends slidably out of the top end of the sleeve (91); Signal block (96), the signal block (96) is disposed at the top of the telescopic rod (95); A liquid level limiting component is disposed on the rear side of the top of the alkali tank (6).

7. The intelligent wastewater treatment system for medical facilities according to claim 6, characterized in that: The liquid level limiting component includes: The slide rail (97) is located at the top rear side of the alkali tank (6). The slide rail (97) has several slots (98) equidistantly arranged on both the left and right sides of the inner cavity along the vertical direction. Slider (99), there are two sliders (99), the two sliders (99) are slidably fitted and inserted into the upper and lower sides of the inner cavity of the slide rail (97), and extrusion grooves (910) are provided on the left and right sides of the slider (99). The second spring (911) is embedded in the inner cavity of the extrusion groove (910), and one end of the second spring (911) is engaged with the inner wall of the extrusion groove (910). A ball (912) is slidably embedded in the inner cavity of the extrusion groove (910), and another part of the ball (912) is adapted to be inserted into the inner cavity of the corresponding slot (98). The other end of the second spring (911) is engaged with the outer wall of the ball (912). A proximity switch (913) is disposed in the inner cavity of the slider (99), and the proximity switch (913) and the signal block (96) are positioned correspondingly and matched.

8. The intelligent wastewater treatment system for medical facilities according to claim 7, characterized in that: The length of the ball (912) extending into the cavity of the slot (98) is less than its radius.

9. An intelligent wastewater treatment method for medical facilities, applied to an intelligent wastewater treatment system for medical facilities as described in claim 8, characterized in that: Includes the following steps: S1. Alkali pretreatment: NaOH solution is injected into the alkali tank (6) through the alkali addition pipe (7), and air is introduced through the aeration pipe (10). CO2 in the air reacts with NaOH to generate Na2CO3. The atomizing nozzle (12) sprays NaOH solution to perform secondary alkali washing on the air to enhance decarbonization. S2, Air dehydration reflux: After decarbonization, the air enters the dehydration tank (81). The semiconductor cooling chip (83) heats and then cools the air, condensing water vapor and trace amounts of NaOH droplets, which are then returned to the alkali tank (6) through the reflux pipe (82). The dry air is sent to the bottom of the stripping tower (1) by the air pump (15). S3, stripping treatment: High ammonia nitrogen wastewater enters the top of the stripping tower (1) through the wastewater pipe (3) and comes into countercurrent contact with the decarbonization air introduced at the bottom. NH3 escapes from the wastewater and enters the tail gas recovery tank (2) through the tower top pipeline, where it is absorbed by tap water to generate ammonia water. S4. Mixed liquid transportation: The NaOH / Na2CO3 solution in the alkali tank (6) is sent to the sewage pipe (3) through the alkali pump (4) and the transportation pipe (5), and after being mixed with the high ammonia nitrogen sewage, it enters the stripping tower (1) to maintain the pH in the tower; S5, Intelligent Control: Liquid level monitoring: The float (92) rises and falls with the liquid level, and drives the signal block (96) through the first magnet (93) and the second magnet (94), triggering the proximity switch (913) to control the start and stop of the alkali addition pipe (7) and automatically adjust the liquid level of the alkali tank (6); pH adjustment: pH sensor (16) monitors in real time. If the pH decreases and NaHCO3 is generated, NaOH is automatically added. The pH is increased by the reaction NaHCO3 + NaOH → Na2CO3 + H2O to ensure stripping efficiency.

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