Wastewater treatment system for hemodialysis

Abstract

The invention discloses a wastewater treatment system for hemodialysis, which comprises an ultrasonic atomization unit communicated with a wastewater pipeline, the ultrasonic atomization unit comprises an ultrasonic atomization nozzle leading to an atomization chamber, the atomization chamber is matched with an ultraviolet sterilization unit, and the atomization chamber is connected with a pressurized air unit and is communicated with a mixing box of a mixing unit. A mixed gas pipe connected with the ozone generation unit penetrates through the mixing box, an impeller is rotationally arranged on the mixed gas pipe located in the mixing box, a gas pipe gas hole is formed in the mixed gas pipe, an impeller gas hole is formed in the impeller, and an outlet of the atomization cavity and an outlet of the mixing box are both opposite to the impeller; and an outlet of the mixing box is connected with a blow-off pipeline through the ozone catalytic decomposition chamber. Blocking medium discharge sterilization, ultrasonic sterilization, ultraviolet sterilization and ozone sterilization are adopted and can act at the same time, the conveying process and the sterilization process are conducted synchronously, and the beneficial effects of being high in sterilization efficiency, good in effect, low in energy consumption, high in efficiency and the like are achieved.

Description

Technical Field

[0001] This invention relates to the field of hemodialysis wastewater treatment technology, and in particular to a wastewater treatment system for hemodialysis and its monitoring method. Background Technology

[0002] In recent years, with the tightening of hospital wastewater discharge standards, some cities across the country have focused on optimizing wastewater treatment processes or improving existing ones to ensure that wastewater discharge meets the new standards. The following are some commonly used wastewater treatment methods in existing technologies: Physicochemical methods: Physicochemical methods are often used as a pretreatment method for organic wastewater treatment. The purpose of pretreatment is to remove organic matter, improve biodegradability, reduce the biochemical treatment load, and improve treatment efficiency by recovering useful components from wastewater or treating some recalcitrant organic pollutants. Extraction methods: Especially extraction separation methods based on reversible complexation reactions have high efficiency and selectivity in the separation of dilute polar organic solutions and have broad application prospects in the treatment of recalcitrant organic wastewater. Oxidation-adsorption methods: High-concentration wastewater is diluted and then subjected to preliminary coagulation and adsorption treatment with coal powder, followed by catalytic oxidation and acidic coagulation with Fenton's reagent, and then coagulation and adsorption with coal powder again. Concentration methods: Concentration methods utilize the low solubility of certain pollutants, evaporating most of the water to concentrate and separate the pollutants. Ultrasonic degradation: This refers to the use of ultrasound to degrade organic pollutants in water, especially recalcitrant organic pollutants.

[0003] However, hemodialysis wastewater contains various viruses and bacteria such as hepatitis A, hepatitis B, and syphilis. The aforementioned single wastewater treatment methods cannot completely treat hemodialysis wastewater, meaning that a significant amount of harmful substances still remain in the treated wastewater. Therefore, Chinese invention patent CN 107986545 B, with an authorization announcement date of April 18, 2023, discloses a hemodialysis machine wastewater treatment device, comprising a waste liquid collector, an oxygen mixer, an ultraviolet sterilizer, an ozone mixer, a high-temperature and high-pressure sterilizer, and a cooler connected in sequence. It also includes an air separator for separating air into oxygen and nitrogen. The oxygen outlet of the air separator is connected to the oxygen mixer, and the nitrogen outlet of the air separator is connected to the high-temperature and high-pressure sterilizer. The inlet of the waste liquid collector is connected to the waste liquid discharge pipe of the hemodialysis machine, and the outlet of the cooler is connected to the hospital's sewage system.

[0004] The aforementioned invention patent's technical solution sequentially employs ozone, ultraviolet light, and high-temperature, high-pressure sterilization, offering relatively high efficiency and reliability compared to single sterilization methods. However, it still suffers from the following shortcomings: Firstly, it has high energy consumption, requiring both an air separator to produce oxygen and nitrogen, and a heating rod and corresponding pressure equipment to construct the high-temperature, high-pressure environment. Secondly, it has low energy efficiency. Oxygen is first produced through an air separator, then converted into ozone by an ultraviolet sterilizer. Since the oxygen is mixed with waste liquid before being irradiated by the ultraviolet sterilizer, not only is the ozone production rate low, but the ultraviolet light used for oxygen conversion also reduces the efficiency of direct ultraviolet sterilization. Thirdly, it poses significant safety risks. If the ozone production is low, it cannot achieve effective disinfection; if the ozone production is high, and the ozone needs to enter the high-temperature, high-pressure sterilizer and be converted into oxygen in a high-temperature, high-pressure environment, significant safety risks arise, requiring a large amount of nitrogen to be introduced into the high-temperature, high-pressure sterilizer through an air separator. In other words, there is an irreconcilable technical contradiction between high energy consumption and safety.

[0005] In conclusion, designing a hemodialysis wastewater treatment system that is both efficient and reliable, and also features low energy consumption and high efficiency, is a technical problem that urgently needs to be solved. Summary of the Invention

[0006] To address the shortcomings in the aforementioned background technology, this invention proposes a wastewater treatment system for hemodialysis and its monitoring method. This invention solves the technical problems of high energy consumption and low efficiency in existing hemodialysis wastewater treatment systems.

[0007] The technical solution of this application is as follows: A wastewater treatment system for hemodialysis includes an ultrasonic atomizing unit connected to a wastewater pipeline. The ultrasonic atomizing unit includes an ultrasonic atomizing nozzle leading to an atomizing chamber. The atomizing chamber is equipped with an ultraviolet sterilization unit. The atomizing chamber is connected to a pressurized air unit and communicates with a mixing chamber of a mixing unit. A mixing gas pipe connected to an ozone generating unit is installed through the mixing chamber. An impeller is rotatably installed on the mixing gas pipe located inside the mixing chamber. The mixing gas pipe has gas pipe holes. The impeller has impeller holes with the same axial position as the gas pipe holes. The outlets of the atomizing chamber and the mixing chamber are both opposite to the impeller. The outlet of the mixing chamber is connected to a sewage pipeline through an ozone catalytic decomposition chamber. This technical solution not only employs ultrasonic sterilization, ultraviolet sterilization, and ozone sterilization, but also simultaneously uses ultrasonic sterilization to atomize wastewater into a water mist, which is then sprayed into an atomization chamber for ultraviolet sterilization. The water mist formed in the atomization chamber, after being sterilized by ultraviolet light, is pushed into a mixing chamber by a pressurized air unit, driving an impeller within the mixing chamber to rotate around a mixing pipe. As the impeller rotates around the mixing pipe, the air vents in the pipe and the impeller are intermittently connected, allowing ozone in the mixing pipe to be drawn into the mixing chamber and thoroughly mixed with the wastewater that has undergone ultrasonic and ultraviolet sterilization, achieving ozone sterilization. The ozone then passes through an ozone catalytic decomposition chamber before being discharged into the sewage pipe. This technical solution not only boasts high sterilization efficiency and effectiveness but also avoids the use of air separation units and high-temperature, high-pressure devices, resulting in low energy consumption and high efficiency.

[0008] Furthermore, the ozone generation unit includes an ozone generating pipe connected to the mixing gas pipe. The ozone generating pipe comprises a nested, spaced-apart tube body and an intermediate body, with an insulating dielectric layer between the tube body and the intermediate body. The tube body and the intermediate body are electrically connected to the high-voltage side and grounding side of an AC high-voltage generator, respectively. The annular channel between the tube body and the intermediate body is connected to an intake fan and an intake check valve. Based on the above technical solution, this technical solution provides a preferred design scheme for a wastewater treatment system for hemodialysis, namely, using the dielectric barrier discharge principle to directly convert oxygen in the air into ozone. Ozone is generated and transported simultaneously during air transport, and then transported to the mixing gas pipe, avoiding the drawbacks of using large equipment to prepare air into ozone and nitrogen. Simultaneously, not only are intake fans and intake check valves used to ensure a continuous supply of fresh air, but also gas backflow during ozone preparation and transport is prevented from polluting the external atmosphere.

[0009] Furthermore, the inlet end of the mixing gas pipe is connected to the outlet end of the ozone generating gas pipe, and the outlet end of the mixing gas pipe is connected to the inlet end of the ozone generating gas pipe through a return gas pipe. The flow cross-section of the return gas pipe is smaller than the flow cross-section of the ozone generating gas pipe and the flow cross-section of the gas pipe orifice and impeller orifice. The return gas pipe is connected to a circulating fan, and an inlet pipe is connected between the air inlet of the circulating fan and the outlet end of the mixing gas pipe. The air inlet fan and the air inlet one-way valve are installed on the air inlet pipe. Based on the above technical solutions, this technical solution provides a preferred design scheme for a wastewater treatment system for hemodialysis. The mixing pipe and the ozone generation pipe are set in a circulating connection, which can not only avoid excessive gas mixing in the mixing box, thus affecting the normal sewage discharge of the sewage pipe, but also prevent ozone from overflowing from the mixing pipe, thus reducing the sterilization efficiency and polluting the external atmosphere. While realizing the circulating preparation and transportation of ozone through the circulating fan, it can also prevent the atomized wastewater in the mixing box from entering the mixing pipe through a specific air pressure. At the same time, the air inlet pipe and the corresponding air inlet fan and air inlet one-way valve provide continuous air supply and prevent gas overflow.

[0010] Furthermore, an outer tube is spaced outside the main tube, and an insulating dielectric layer is also provided between the outer tube and the main tube. The outer tube is electrically connected to the grounding side of the AC high-voltage generator, and the annular space between the outer tube and the main tube constitutes the atomization chamber. Based on the above technical solution, this technical solution provides a preferred design scheme for a wastewater treatment system for hemodialysis, which couples the atomization chamber with an ozone generating gas pipe. The ozone generating gas pipe and the atomization chamber share a high-voltage electrode connected to the high-voltage side of the AC high-voltage generator. That is, while the wastewater in the atomization chamber undergoes ultrasonic sterilization and ultraviolet sterilization, it can also undergo dielectric barrier discharge sterilization and generate ozone. This simplifies the system structure, reduces energy consumption, and further improves sterilization efficiency and effect.

[0011] Furthermore, both the outer tube and the tube body are light-transmitting conductor structures or include light-transmitting portions, the insulating dielectric layer is a light-transmitting glass layer, and the ultraviolet sterilization unit includes a cylindrical ultraviolet germicidal lamp sleeved outside the light-transmitting conductor structure or the light-transmitting portion. Based on the above technical solution, this technical solution provides a preferred design scheme for a wastewater treatment system for hemodialysis, namely, simultaneously performing ultrasonic sterilization, ultraviolet sterilization, and dielectric barrier discharge sterilization on the wastewater in the atomization chamber, while also using an ultraviolet germicidal lamp to sterilize the gas in the ozone-generating gas tube. Since the ultraviolet wavelength used for sterilization is different from the ultraviolet wavelength used to decompose ozone, the ultraviolet germicidal lamp will not decompose ozone to generate ozone in the gas tube. The ultraviolet sterilization unit and the dielectric barrier discharge unit complement each other, further improving sterilization efficiency and effect.

[0012] Furthermore, a baffle plate is provided within the atomization chamber, spirally arranged around the tube body as its axis, and the baffle plate has honeycomb holes. Based on the above technical solution, this technical solution provides a preferred design scheme for a wastewater treatment system for hemodialysis. The specially structured baffle plate within the atomization chamber extends the sterilization time and increases the air pressure within the atomization chamber, thereby increasing the impeller speed. This allows for more efficient and thorough mixing of the waste liquid in the mixing chamber with the ozone provided by the mixing gas pipe, further improving sterilization efficiency and effect.

[0013] Furthermore, the pressurized air unit is connected to the outer pipe body via an air inlet pipe, and the outer pipe body is connected to the mixing chamber via a connecting pipe. The air inlet pipe is vertically connected to one end of the outer pipe body, and the connecting pipe is vertically connected to the other end of the outer pipe body. The air inlet pipe pressurizes the atomization chamber by connecting to the return air pipe. Based on the above technical solution, this technical solution provides a preferred design scheme for a wastewater treatment system for hemodialysis, and provides a preferred connection structure between the pressurized air unit and the ozone generating gas pipe. This structure is not only simple and easy to process, assemble, and maintain, but also ensures that all atomized wastewater passes through the entire length of the outer pipe body before being discharged into the mixing chamber, thus significantly improving the ozone generation concentration.

[0014] Furthermore, the orientation of the connecting pipe is consistent with the rotation direction of the impeller, and the outlet of the connecting pipe corresponds to the blades on one side of the impeller's rotation axis. Based on the above technical solution, this technical solution provides a preferred design scheme for a wastewater treatment system for hemodialysis, which aligns the connecting pipe with one side of the pressure wheel, improving the convenience and speed of the blades rotating around the rotation axis. During the rotation, the blades create a negative pressure zone, which facilitates both the delivery of physicochemical wastewater to the system via the connecting pipe and the delivery of ozone via the gas pipe.

[0015] Furthermore, the mixing chamber is a cylindrical hollow box, the axis of the mixing gas pipe is perpendicular to the axis of the mixing chamber, and several blades of the impeller are spaced apart along the axis of the mixing gas pipe, with the outer ends of the blades fitting with the inner wall of the mixing chamber. Based on the above technical solution, this technical solution provides a preferred design for a wastewater treatment system for hemodialysis. The blades are arranged throughout the entire flow cross-section of the mixing chamber, with adjacent blades spaced apart and not blocking the flow cross-section. The cross-sections of the mixing gas pipe and the mixing chamber are both annular and their axes are perpendicular to each other, which can further improve mixing efficiency and effect, thereby improving sterilization efficiency and effect.

[0016] Furthermore, the mixing chamber inlet, connected to the atomizing chamber, and the mixing chamber outlet, connected to the ozone catalytic decomposition chamber, are both located at the same end of the cylindrical hollow box. A partition is provided between the mixing chamber inlet and the mixing chamber outlet. The flow cross-section of the mixing chamber inlet is larger than that of the mixing chamber outlet. The mixing chamber inlet corresponds to the blades on one side of the impeller rotation shaft, and the mixing chamber outlet corresponds to the blades on the other side of the impeller rotation shaft. Based on the above technical solution, this technical solution provides a preferred design scheme for a wastewater treatment system for hemodialysis. The mixing chamber inlet and outlet are both located at the same end of the cylindrical hollow box, which prevents the mixed liquid from being directly discharged from the end of the mixing chamber away from the atomizing chamber outlet. Instead, the mixed liquid must travel back and forth twice through the axial space of the mixing chamber before being discharged into the ozone catalytic decomposition chamber.

[0017] Compared with the prior art, the technical solution provided by this invention not only simultaneously employs ultrasonic sterilization, ultraviolet sterilization, and ozone sterilization, but also simultaneously sprays wastewater into an atomization chamber for ultraviolet sterilization while performing ultrasonic sterilization. The water mist formed by the wastewater in the atomization chamber is pushed into the mixing box by the pressurized air unit while being sterilized by ultraviolet light, and drives the impeller in the mixing box to rotate around the mixing air pipe. While the impeller rotates around the mixing air pipe, the air pipe vents and the impeller vents are intermittently connected, so that the ozone in the mixing air pipe is drawn into the mixing box and fully mixed with the wastewater that has undergone ultrasonic sterilization and ultraviolet sterilization, thus achieving ozone sterilization. Subsequently, it passes through the ozone catalytic decomposition chamber and is incorporated into the sewage pipe. This invention couples the atomizing chamber with an ozone-generating pipe. The ozone-generating pipe and the atomizing chamber share a high-voltage electrode connected to the high-voltage side of an AC high-voltage generator. This means that while the wastewater in the atomizing chamber undergoes ultrasonic and ultraviolet sterilization, it can also undergo dielectric barrier discharge sterilization and generate ozone. This simplifies the system structure, reduces energy consumption, and further improves sterilization efficiency and effect. This invention not only employs dielectric barrier discharge sterilization, ultrasonic sterilization, ultraviolet sterilization, and ozone sterilization, but also allows them to work simultaneously, with the delivery and sterilization processes occurring concurrently. This results in high sterilization efficiency, good effect, low energy consumption, and high performance. Attached Figure Description

[0018] To more clearly illustrate the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Diagram showing the positional relationship between the mixing tank inlet and mixing tank outlet.

[0020] Explanation of icon numbers: Atomizing chamber 1, outer tube 11, baffle 12, air inlet pipe 14, connecting pipe 15; Ultrasonic atomizing nozzle 2; Mixing box 3, mixing box inlet 31, mixing box outlet 32, partition 33; Mixed trachea 4, tracheal vent 41; Impeller 5, impeller vent 51, blade 52, impeller shaft 53; Ozone catalytic decomposition chamber 6; 71. Intake fan, 72. Intake check valve, 73. Pipe body, 74. Return pipe, 75. Circulating fan, 76. Intake pipe, 77. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] A wastewater treatment system for hemodialysis, such as Figure 1 and Figure 2 As shown, the system includes an ultrasonic atomization unit connected to a wastewater pipeline. The ultrasonic atomization unit includes an ultrasonic atomization nozzle 2 leading to an atomization chamber 1. The ultrasonic atomization unit uses the ultrasonic atomization nozzle 2 to ultrasonically sterilize and atomize the hemodialysis wastewater transported from the wastewater pipeline. The atomization chamber 1 is equipped with an ultraviolet sterilization unit, which sterilizes the water mist within the atomization chamber 1 using ultraviolet light. The atomization chamber 1 is connected to a pressurized air unit and communicates with a mixing chamber 3 of a mixing unit. The water mist within the atomization chamber 1 is transported to the mixing chamber 3 via the pressurized air unit.

[0023] A mixing pipe 4, connected to the ozone generating unit, runs through the mixing chamber 3. An impeller 5 is rotatably mounted on the mixing pipe 4 within the mixing chamber 3. The mixing pipe 4 has a gas pipe orifice 41, and the impeller shaft 53 of the impeller 5 has an impeller orifice 51 positioned axially with the gas pipe orifice 41. When the impeller 5 rotates, the gas pipe orifice 41 intermittently connects with the impeller orifice 51, allowing the gas in the mixing pipe 4 to enter the mixing chamber 3 as the impeller 5 rotates, mixing with the water mist supplied from the atomizing chamber 1. The outlet of the atomizing chamber 1 and the mixing chamber outlet 32 ​​of the mixing chamber 3 are both opposite to the impeller 5. The mixing chamber outlet 32 ​​is connected to a sewage pipe via an ozone catalytic decomposition chamber 6.

[0024] This technical solution simultaneously employs ultrasonic sterilization, ultraviolet sterilization, and ozone sterilization. Furthermore, while ultrasonic sterilization is in progress, wastewater is atomized and sprayed into the atomization chamber 1 for ultraviolet sterilization. The water mist formed in the atomization chamber 1, after ultraviolet sterilization, is simultaneously pushed into the mixing box 3 by a pressurized air unit. This propels the impeller 5 within the mixing box 3 to rotate around the mixing pipe 4. Simultaneously, the air vents 41 in the pipe and the impeller vents 51 are intermittently connected, allowing ozone in the mixing pipe 4 to be drawn into the mixing box 3 and thoroughly mixed with the wastewater that has undergone ultrasonic and ultraviolet sterilization, achieving ozone sterilization. The ozone then passes through the ozone catalytic decomposition chamber 6 and is discharged into the sewage pipe. This technical solution not only boasts high sterilization efficiency and effectiveness but also avoids the use of air separation units and high-temperature, high-pressure devices, resulting in low energy consumption and high efficiency.

[0025] Based on the above embodiments, as a preferred embodiment of the wastewater treatment system for hemodialysis, the ozone generating unit includes an ozone generating pipe connected to the mixing gas pipe 4. The ozone generating pipe includes a pipe body 73 and an intermediate body 74 that are nested and spaced apart from each other. An insulating dielectric layer is provided between the pipe body 73 and the intermediate body 74. The pipe body 73 and the intermediate body 74 are electrically connected to the high-voltage side and the grounding side of the AC high-voltage generator, respectively, so that the ozone generating pipe forms a dielectric barrier discharge structure, and ozone is generated between the pipe body 73 and the intermediate body 74 through the dielectric barrier discharge principle.

[0026] The annular channel between the tube body 73 and the intermediate body 74 is connected to the air intake fan 71 and the air intake one-way valve 72. The air intake fan 71 supplies oxygen to the ozone generating gas pipe, and the air intake one-way valve 72 prevents the gas in the ozone generating gas pipe from overflowing.

[0027] This technical solution provides a preferred design for a wastewater treatment system for hemodialysis. It directly converts oxygen in the air into ozone using the principle of dielectric barrier discharge. Ozone is generated and transported simultaneously during air transport and then delivered to the mixing pipe 4. This avoids the drawbacks of using large equipment to prepare air into ozone and nitrogen. At the same time, it not only uses an air intake fan 71 and an air intake one-way valve 72 to ensure a continuous supply of fresh air, but also avoids gas backflow and pollution of the external atmosphere during the ozone preparation and transport process.

[0028] Based on the above embodiments, as a preferred embodiment of the wastewater treatment system for hemodialysis, the inlet end of the mixing pipe 4 is connected to the outlet end of the ozone generating pipe, and the outlet end of the mixing pipe 4 is connected to the inlet end of the ozone generating pipe through the return pipe 75, that is, the mixing pipe 4, the ozone generating pipe, and the return pipe 75 form a circulation pipeline.

[0029] The flow cross section of the return gas pipe 75 is smaller than that of the ozone generating gas pipe, the gas pipe orifice 41, and the impeller orifice 51. While maintaining circulation, the gas in the mixing gas pipe 4 flows back to the return gas pipe 75 more slowly, so that most of the gas in the mixing gas pipe 4 enters the mixing box 3.

[0030] The return air pipe 75 is connected to a circulating fan 76, which accelerates airflow circulation and pressurizes the air. An air inlet pipe 77 is connected between the air inlet of the circulating fan 76 and the air outlet of the mixing pipe 4. An air inlet fan 71 and an air inlet one-way valve 72 are installed on the air inlet pipe, and the air inlet fan 71 and the circulating fan 76 can work together.

[0031] This technical solution provides a preferred design for a wastewater treatment system for hemodialysis. The mixing pipe 4 and the ozone generating pipe are connected in a circulating manner. This avoids excessive gas mixing in the mixing tank 3, which would affect the normal discharge of the sewage pipe, and also prevents ozone from overflowing from the mixing pipe 4, thus reducing sterilization efficiency and polluting the external atmosphere. The circulating fan 76 realizes the circulating preparation and transportation of ozone, and also prevents the atomized wastewater in the mixing tank 3 from entering the mixing pipe 4 through a specific air pressure. At the same time, the air inlet pipe 77 and the corresponding air inlet fan 71 and air inlet one-way valve 72 provide continuous air supply and prevent gas overflow.

[0032] Based on the above embodiments, as a preferred embodiment of the wastewater treatment system for hemodialysis, an outer tube 11 is provided on the outside of the tube 73 at intervals, and an insulating medium layer is also provided between the outer tube 11 and the tube 73. The outer tube 11 is electrically connected to the grounding side of the AC high voltage generator, and the annular space between the outer tube 11 and the tube 73 constitutes the atomization chamber 1.

[0033] This technical solution provides a preferred design for a wastewater treatment system for hemodialysis. The atomizing chamber 1 is coupled with an ozone generating pipe. The ozone generating pipe and the atomizing chamber 1 share a high-voltage electrode connected to the high-voltage side of an AC high-voltage generator. That is, while the wastewater in the atomizing chamber 1 is subjected to ultrasonic sterilization and ultraviolet sterilization, it can also be subjected to dielectric barrier discharge sterilization and generate ozone. This simplifies the system structure, reduces energy consumption, and further improves sterilization efficiency and effect.

[0034] Based on the above embodiments, as a preferred embodiment of the wastewater treatment system for hemodialysis, the outer tube 11 and the tube 73 are both light-transmitting conductor structures or include light-transmitting parts, the insulating medium layer is a light-transmitting glass layer, and the ultraviolet sterilization unit includes a cylindrical ultraviolet sterilization lamp sleeved outside the light-transmitting conductor structure or the light-transmitting part.

[0035] This technical solution provides a preferred design for a wastewater treatment system for hemodialysis. While performing ultrasonic sterilization, ultraviolet sterilization, and dielectric barrier discharge sterilization on the wastewater in the atomization chamber 1, it can also use an ultraviolet germicidal lamp to sterilize the gas in the ozone-generating duct. Since the ultraviolet wavelength used for sterilization differs from the wavelength used to decompose ozone, the ultraviolet germicidal lamp does not decompose ozone generated in the duct. The ultraviolet sterilization unit and the dielectric barrier discharge unit complement each other, further improving sterilization efficiency and effect.

[0036] Based on the above embodiments, as a preferred embodiment of the wastewater treatment system for hemodialysis, a baffle plate 12 is provided in the atomizing chamber 1. The baffle plate 12 is spirally arranged with the tube body 73 as the axis, and honeycomb holes are provided on the baffle plate 12.

[0037] This technical solution provides a preferred design for a wastewater treatment system for hemodialysis. A baffle plate 12 with a special structure is set in the atomization chamber 1, which can not only extend the sterilization time, but also increase the air pressure in the atomization chamber 1, thereby increasing the speed of the impeller 5. This allows the waste liquid in the mixing box 3 to be mixed more efficiently and fully with the ozone provided by the mixing pipe 4, further improving the sterilization efficiency and effect.

[0038] Based on the above embodiments, as a preferred embodiment of the wastewater treatment system for hemodialysis, the pressurized air unit is connected to the outer pipe body 11 through the air inlet pipe 14, the outer pipe body 11 is connected to the mixing box 3 through the connecting pipe 15, the air inlet pipe 14 is vertically connected to one end of the outer pipe body 11, and the connecting pipe 15 is vertically connected to the other end of the outer pipe body 11.

[0039] This technical solution provides a preferred design for a wastewater treatment system for hemodialysis, and offers an optimal connection structure between the pressurized air unit and the ozone generating gas pipe. This design is not only simple in structure and easy to process, assemble, and maintain, but also ensures that all atomized wastewater passes through the entire length of the outer pipe 11 before being discharged into the mixing chamber 3, thus significantly increasing the ozone generation concentration. Simultaneously, the air inlet pipe 14, connected to the return air pipe 75, pressurizes the atomization chamber 1. It shares the air inlet fan 71 and air inlet check valve 72 with the ozone generating unit, achieving low energy consumption and preventing overflow. Furthermore, while the gas undergoes dielectric barrier discharge sterilization, ultraviolet sterilization, and ozone-laden gas treatment in the atomization chamber 1, it also provides auxiliary sterilization.

[0040] Based on the above embodiments, as a preferred embodiment of the wastewater treatment system for hemodialysis, the orientation of the connecting pipe 15 is consistent with the rotation direction of the impeller 5, and the outlet of the connecting pipe 15 corresponds to the blade 52 on one side of the rotation axis of the impeller 5.

[0041] This technical solution provides a preferred design for a wastewater treatment system for hemodialysis, which aligns the connecting pipe 15 with one side of the pressure roller 5, improving the ease and speed of the blade 52 rotating around the rotation axis. During the rotation, the blade 52 creates a negative pressure zone, which facilitates the delivery of physicochemical wastewater to it by the connecting pipe 15 and the delivery of ozone to it by the gas pipe 4.

[0042] Based on the above embodiments, as a preferred embodiment of the wastewater treatment system for hemodialysis, the mixing box 3 is a cylindrical hollow box, the axis of the mixing gas pipe 4 is perpendicular to the axis of the mixing box 3, and the blades 52 of the impeller 5 are spaced apart along the axis of the mixing gas pipe 4, with the outer end of the blades 52 in clearance fit with the inner wall of the mixing box 3.

[0043] This technical solution provides a preferred design for a wastewater treatment system for hemodialysis. The blades 52 are arranged throughout the entire flow section of the mixing box 3. Of course, the blades 52 are spaced apart and do not block the flow section of the mixing box 3. The cross-section of the mixing pipe 4 and the mixing box 3 are both annular and their axes are perpendicular to each other, which can further improve the mixing efficiency and mixing effect, thereby improving the sterilization efficiency and sterilization effect.

[0044] Based on the above embodiments, a preferred embodiment of the wastewater treatment system for hemodialysis is as follows: Figure 1 and Figure 3As shown, the mixing box 3, which is connected to the atomizing chamber 1, and the mixing box outlet 32, which is connected to the ozone catalytic decomposition chamber 6, are both located at the same plane end of the columnar hollow box. A partition 33 is provided between the mixing box inlet 31 and the mixing box outlet 32 ​​to prevent the mixing box inlet 31 and the mixing box outlet 32 ​​from being directly connected.

[0045] The flow cross-section of the mixing chamber inlet 31 is larger than that of the mixing chamber outlet 32. The mixing chamber inlet 31 corresponds to the blade 52 on one side of the impeller 5's rotating shaft, while the mixing chamber outlet 32 ​​and the baffle 33 both correspond to the blade 52 on the other side of the impeller 5's rotating shaft. Preferably, a labyrinthine baffle is provided between the baffle 33 surrounding the mixing chamber outlet 32 ​​and the mixing chamber 3, extending the flow path of the mixed liquid or mixed mist within the mixing chamber 3, and simultaneously creating more vortices at the turning points of the fluid medium such as the mixed liquid or mixed mist.

[0046] This technical solution provides that the mixing box inlet 31 and the mixing box outlet 32 ​​are both located at the same end of the columnar hollow box, and a partition 33 is provided to prevent the mixed liquid from being discharged directly from the end of the mixing box 3 away from the outlet of the atomizing chamber. Instead, the mixed liquid must pass through the axial space of the mixing box 3 twice before it can be discharged into the ozone catalytic decomposition chamber 6.

[0047] All aspects not detailed in this invention are conventional technical means known to those skilled in the art.

[0048] The above content shows and describes the basic principles, main features, and beneficial effects of the present invention. The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A wastewater treatment system for hemodialysis, characterized in that: The system includes an ultrasonic atomizing unit connected to a wastewater pipeline. The ultrasonic atomizing unit includes an ultrasonic atomizing nozzle (2) leading to an atomizing chamber (1). The atomizing chamber (1) is equipped with an ultraviolet sterilization unit. The atomizing chamber (1) is connected to a pressurized air unit and is connected to a mixing box (3) of a mixing unit. A mixing gas pipe (4) connected to an ozone generating unit is provided through the mixing box (3). An impeller (5) is rotatably provided on the mixing gas pipe (4) located in the mixing box (3). A gas pipe hole (41) is provided on the mixing gas pipe (4). An impeller hole (51) is provided on the impeller (5) with the same axial position as the gas pipe hole (41). The outlet of the atomizing chamber (1) and the outlet of the mixing box (3) are both opposite to the impeller (5). The outlet of the mixing box (3) is connected to a sewage pipeline through an ozone catalytic decomposition chamber (6).

2. The wastewater treatment system for hemodialysis according to claim 1, characterized in that: The ozone generating unit includes an ozone generating pipe connected to the mixing pipe (4). The ozone generating pipe includes a pipe body (73) and an intermediate body (74) that are nested and spaced apart. An insulating dielectric layer is provided between the pipe body (73) and the intermediate body (74). The pipe body (73) and the intermediate body (74) are electrically connected to the high-voltage side and the grounding side of the AC high-voltage generator, respectively. The annular channel between the pipe body (73) and the intermediate body (74) is connected to the intake fan (71) and the intake check valve (72).

3. The wastewater treatment system for hemodialysis according to claim 2, characterized in that: The inlet end of the mixing pipe (4) is connected to the outlet end of the ozone generating pipe. The outlet end of the mixing pipe (4) is connected to the inlet end of the ozone generating pipe through the return pipe (75). The flow cross section of the return pipe (75) is smaller than the flow cross section of the ozone generating pipe and the flow cross section of the pipe vent (41) and the impeller vent (51). The return pipe (75) is connected to a circulating fan (76). An inlet pipe (77) is connected between the inlet of the circulating fan (76) and the outlet end of the mixing pipe (4). The inlet fan (71) and the inlet check valve (72) are installed on the inlet pipe (77).

4. The monitoring method for a wastewater treatment system for hemodialysis according to claim 3, characterized in that: An outer tube (11) is spaced outside the tube (73). An insulating medium layer is also provided between the outer tube (11) and the tube (73). The outer tube (11) is electrically connected to the grounding side of the AC high voltage generator. The annular space between the outer tube (11) and the tube (73) constitutes the atomizing chamber (1).

5. The monitoring method for a wastewater treatment system for hemodialysis according to claim 4, characterized in that: The outer tube (11) and the tube (73) are both light-transmitting conductor structures or include light-transmitting parts. The insulating medium layer is a light-transmitting glass layer. The ultraviolet sterilization unit includes a cylindrical ultraviolet sterilization lamp sleeved outside the light-transmitting conductor structure or the light-transmitting part.

6. The monitoring method for a wastewater treatment system for hemodialysis according to claim 5, characterized in that: The atomizing chamber (1) is provided with a baffle plate (12), which is spirally arranged with the tube body (73) as the axis and has honeycomb holes.

7. The monitoring method for a wastewater treatment system for hemodialysis according to claim 6, characterized in that: The pressurized air unit is connected to the outer tube body (11) through the air inlet pipe (14), and the outer tube body (11) is connected to the mixing box (3) through the connecting pipe (15). The air inlet pipe (14) is vertically connected to one end of the outer tube body (11), and the connecting pipe (15) is vertically connected to the other end of the outer tube body (11). The air inlet pipe (14) pressurizes the atomizing chamber (1) by connecting to the return air pipe (75).

8. The monitoring method for a wastewater treatment system for hemodialysis according to claim 7, characterized in that: The orientation of the connecting pipe (15) is consistent with the rotation direction of the impeller (5), and the outlet of the connecting pipe (15) corresponds to the blade (52) on one side of the rotation axis of the impeller (5).

9. The monitoring method for a wastewater treatment system for hemodialysis according to any one of claims 1-8, characterized in that: The mixing box (3) is a cylindrical hollow box. The axis of the mixing pipe (4) is perpendicular to the axis of the mixing box (3). The blades (52) of the impeller (5) are arranged at intervals along the axis of the mixing pipe (4). The outer end of the blades (52) is in clearance fit with the inner wall of the mixing box (3).

10. The monitoring method for a wastewater treatment system for hemodialysis according to claim 9, characterized in that: The mixing box (3) is connected to the atomizing chamber (1) at the mixing box inlet (31) and to the ozone catalytic decomposition chamber (6) at the mixing box outlet (32), both of which are located at the same plane end of the columnar hollow box. A partition (33) is provided between the mixing box inlet (31) and the mixing box outlet (32). The flow cross section of the mixing box inlet (31) is larger than that of the mixing box outlet (32). The mixing box inlet (31) corresponds to the blade (52) on one side of the impeller (5) rotating shaft, and the mixing box outlet (32) corresponds to the blade (52) on the other side of the impeller (5) rotating shaft.

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