Environment-friendly treatment process and equipment for medical wastewater

Abstract

The invention discloses an environment-friendly treatment process and equipment for medical wastewater, and relates to the technical field of wastewater treatment.The environment-friendly treatment process comprises the steps of pretreatment, primary treatment, secondary treatment, disinfection treatment, energy recovery and intelligent management. The first-stage treatment is used for preliminarily decomposing organic substances in the wastewater, and the second-stage treatment is used for further degrading the organic substances in the wastewater and generating available energy. Large suspended matters and floating matters in wastewater are effectively intercepted through pretreatment, so that equipment blockage caused by subsequent treatment is prevented, the water quality and the water quantity are balanced by using the adjusting tank, stable working conditions are created for subsequent treatment, the whole treatment process is monitored in real time by utilizing intelligent management, and the treatment efficiency is improved. Data such as suspended matter concentration, PH value, heavy metal concentration and microorganism quantity are collected in real time, data analysis and decision support are performed through an intelligent control system, and the wastewater treatment efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to an environmentally friendly treatment process and equipment for medical wastewater. Background Art

[0002] The sewage discharged by hospitals into the natural environment often contains pathogens, organic matter, floating and suspended matter, and radioactive pollutants. The direct discharge of untreated raw sewage will seriously pollute the natural environment. Therefore, it is necessary to eliminate viruses and harmful substances in medical wastewater through treatment methods. However, it is difficult for existing wastewater treatment to regulate water quality and quantity, as well as to collect key parameters in real time during treatment, so as to improve the efficiency of wastewater treatment.

[0003] The defects of existing medical wastewater treatment are:

[0004] 1. Patent document CN102424486B discloses a wastewater treatment process and device for a medical waste disposal plant, which mainly considers how to treat wastewater from a medical waste disposal plant to save water resources, but does not consider how to effectively prevent the blockage of subsequent treatment equipment and improve the treatment efficiency of wastewater;

[0005] 2. Patent document CN104944710B discloses a three-stage treatment process for medical wastewater, which mainly considers how to use different treatment methods to remove different pollutants in medical wastewater to achieve efficient purification of medical wastewater, but does not consider how to obtain safe and effective treatment and improve wastewater treatment efficiency;

[0006] 3. Application document CN112723670A discloses an efficient medical wastewater treatment process and application method, which mainly considers how to solve the problems of existing medical wastewater being difficult to treat, immature treatment processes, unstable effluent quality, and process operation costs, but does not consider how to sterilize and disinfect efficiently and environmentally friendly;

[0007] 4. Patent document JP6802426B1 discloses a medical wastewater treatment device containing bacteria and viruses. It mainly considers how to eliminate bacteria and viruses in medical wastewater, but does not consider how to quickly balance the concentration of pollutants in the water to achieve the purpose of stabilizing the water quality. Summary of the invention

[0008] The purpose of the present invention is to provide an environmentally friendly treatment process and equipment for medical wastewater to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an environmentally friendly treatment process for medical wastewater, comprising pretreatment, primary treatment, secondary treatment, disinfection treatment, energy recovery and intelligent management, wherein the pretreatment removes large suspended solids and particulate matter in the wastewater by physical methods, the primary treatment is used to preliminarily decompose organic matter in the wastewater, the secondary treatment is responsible for further degrading the organic matter in the wastewater and generating usable energy, the disinfection treatment thoroughly disinfects the wastewater after the secondary treatment by pasteurization steam sterilization, the energy recovery collects the usable energy generated in the secondary treatment and uses it to provide energy for the entire wastewater treatment, the intelligent management detects key parameters in the wastewater treatment process in real time by online monitoring equipment, and performs data analysis and decision support by an intelligent control system;

[0010] The pretreatment includes physical filtration and wastewater regulation, the physical filtration includes grid treatment and sedimentation treatment, and the wastewater regulation uses a regulating tank to balance the water quality and water quantity of hospital wastewater;

[0011] The online monitoring equipment includes a suspended matter detector, a pH detector, a heavy metal detector, a microorganism detector and a waterproof camera.

[0012] Preferably, the primary treatment includes a separation step, a sedimentation step and a decomposition step. The separation step separates fine particles and grease by injecting microbubbles formed by gas into the wastewater. The sedimentation step uses a sedimentation tank to remove fine suspended solids and some organic matter. The decomposition step is used to further decompose organic matter.

[0013] Preferably, the secondary treatment includes biological oxidation, anaerobic digestion and sedimentation processes, wherein the biological oxidation removes organic matter in the wastewater through a contact oxidation tank, the anaerobic digestion decomposes organic pollutants in the wastewater to produce usable resources through the action of anaerobic microorganisms, and the sedimentation process reduces the concentration of suspended matter in the wastewater through physical filtration.

[0014] Preferably, the biological oxidation includes activated sludge treatment and biofilm treatment, wherein the activated sludge treatment degrades dissolved and colloidal organic pollutants through microbial metabolism, and the biofilm treatment uses a biological filter to degrade organic matter in wastewater.

[0015] Preferably, the precipitation process includes a filtration step, a membrane separation step and an advanced oxidation step, wherein the filtration step uses activated carbon to remove smaller suspended particles and soluble organic matter in the wastewater, the membrane separation step is used to remove residual micro-pollutants in the wastewater, and the advanced oxidation step is used to destroy the difficult-to-degrade organic matter in the wastewater and kill drug-resistant pathogens.

[0016] Preferably, the membrane separation step includes microfiltration, ultrafiltration, reverse osmosis and nanofiltration. The microfiltration uses a microfiltration membrane to intercept larger suspended matter in the wastewater, the ultrafiltration uses a hollow fiber membrane to remove macromolecular substances in the wastewater, the reverse osmosis uses a composite membrane to remove heavy metals, ions and various organic substances in the wastewater, and the nanofiltration uses an asymmetric membrane to remove unnecessary minerals and organic matter.

[0017] Preferably, the advanced oxidation step includes ultraviolet irradiation and hydrogen peroxide treatment, wherein the ultraviolet irradiation uses an ultraviolet disinfection lamp to irradiate the treated wastewater to initially kill bacteria and viruses, and the hydrogen peroxide treatment utilizes the strong oxidizing ability of hydrogen peroxide to rapidly destroy refractory organic matter and further kill drug-resistant pathogens.

[0018] Preferably, it includes a pretreatment box, a partition plate 1 is installed inside the pretreatment box, and the partition plate 1 is used to separate the pretreatment box into a sedimentation area and a regulating tank, a grille is installed inside the sedimentation area, a water inlet pipe and a motor box are installed on the top of the pretreatment box, and the motor box is located in front of the water inlet pipe, the water inlet pipe is connected with the sedimentation area, a control motor is installed inside the motor box, a stirring device is installed at the output end of the control motor, and the stirring device is located inside the regulating tank, a waterproof camera is installed on the top wall of the regulating tank, and the waterproof camera is located in front of the stirring device, a water outlet connection port is installed on the front of the pretreatment box, a water pump is installed on the bottom wall of the regulating tank, a connecting water pipe is installed at the output end of the water pump, and one end of the connecting water pipe is connected to the water outlet connection port.

[0019] Preferably, a connecting pipe is installed at one end of the water outlet connection port, an environmental protection treatment device is installed at one end of the connecting pipe, and the environmental protection treatment device is located in front of the pretreatment box, two groups of equidistantly arranged partitions 2 are installed inside the environmental protection treatment device, and the partitions 2 are used to separate the environmental protection treatment device from left to right into a first treatment tank, a second treatment tank and a disinfection tank, an opening is opened through the inside of the partition 2, a one-way valve is installed inside the opening, a suspended matter detector and a pH detector are installed on one side of the partition 2 and the front wall of the environmental protection treatment device, and the pH detector is located below the suspended matter detector, an ultraviolet disinfection lamp is installed on the top wall of the environmental protection treatment device, and the ultraviolet disinfection lamp is located inside the second treatment tank, a feed port is installed on the top wall of the environmental protection treatment device, and the feed port is used to add microorganisms to the second treatment tank.

[0020] Preferably, a drain outlet is installed on the front of the environmental protection treatment device, and the drain outlet is connected to the disinfection tank. A control panel, a feeding port and a connecting channel are installed on the outer wall of one side of the environmental protection treatment device, and the feeding port is located behind the control panel. The feeding port is connected to the second treatment tank, and the connecting channel is connected to the first treatment tank. A microbubble generator is installed at one end of the connecting channel, and the microbubble generator is located on one side of the environmental protection treatment device.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention pre-treats medical wastewater, uses a grid to effectively intercept large suspended matter and floating objects in the wastewater, such as gauze and blood clots, and then uses a grit chamber to remove heavy particulate matter such as silt in the medical wastewater to prevent subsequent treatment from causing equipment blockage or wear, and uses a regulating tank to balance water quality and water volume to create stable working conditions for subsequent treatment. At the same time, intelligent management is used to monitor the entire treatment process in real time, and key parameters such as suspended matter concentration, pH value, heavy metal concentration, microbial count and other data are collected in real time. Data analysis and decision support are performed through an intelligent control system to optimize treatment operating conditions and energy conservation and emission reduction, thereby improving the efficiency of wastewater treatment.

[0023] 2. The present invention preliminarily decomposes fine suspended solids and some organic matter in wastewater through primary treatment, and degrades dissolved and colloidal organic pollutants in wastewater through the metabolism of microorganisms in secondary treatment, converting complex organic matter into simple substances, thereby achieving the purpose of purifying water quality. Through multi-stage treatment processes, it is ensured that medical wastewater is safely and effectively treated, the wastewater treatment efficiency is improved, and no pollution is caused to the environment.

[0024] 3. The present invention uses ultraviolet irradiation in combination with hydrogen peroxide to destroy refractory organic matter and kill drug-resistant pathogens. High-intensity ultraviolet disinfection lamps are used to destroy the DNA structure of microorganisms and achieve rapid disinfection. This method does not require the use of chemical additives, avoiding the risk of secondary pollution. Microorganisms are then killed by the strong oxidizing properties of hydrogen peroxide. Hydrogen peroxide will rapidly decompose after contacting many inorganic compounds or impurities, releasing a large amount of oxygen, heat energy and water vapor. This process destroys the cell structure of microorganisms, thereby achieving a sterilization effect. This disinfection method will not cause secondary pollution. A multi-stage treatment process is used to ensure that medical wastewater is safely and effectively treated, thereby improving wastewater treatment efficiency and causing no pollution to the environment.

[0025] 4. The present invention allows wastewater to flow into the regulating tank, controls the operation of the control motor, drives the stirring device to rotate and stir the water in the regulating tank, so as to balance the concentration of pollutants in the wastewater and achieve the purpose of stabilizing the water quality. The wastewater is extracted by a water pump and allowed to flow into the environmental protection treatment device. The operating speed of the water pump is adjusted to match the processing capacity of the subsequent treatment equipment, thereby avoiding the impact or inefficiency of the system caused by excessive or insufficient flow, so as to achieve balance and stabilize the fluctuation of water inlet, and ensure that the subsequent treatment facilities can handle a constant flow.

[0026] Figure 1 is a system diagram of the present invention;

[0027] Figure 2 It is a structural diagram of the secondary treatment of the present invention;

[0028] Figure 3 It is a structural diagram of the online monitoring device of the present invention;

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 5 It is a schematic diagram of the side cross-sectional structure of the pretreatment box of the present invention;

[0031] Figure 6 It is a schematic diagram of the side cross-sectional structure of the environmental protection treatment device of the present invention.

[0032] In the figure: 1. pretreatment box; 2. environmental protection treatment device; 3. sedimentation area; 4. regulating tank; 5. grille; 6. partition one; 7. motor box; 8. control motor; 9. stirring device; 10. waterproof camera; 11. water pump; 12. water outlet connection port; 13. first treatment tank; 14. second treatment tank; 15. disinfection tank; 16. partition two; 17. water inlet pipe; 18. one-way valve; 19. suspended matter detector; 20. PH detector; 21. feed port; 22. ultraviolet disinfection lamp; 23. drain port; 24. control panel; 25. micro bubble generator; 26. connecting channel; 27. feeding port. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Embodiment 1

[0037] See also Figure 1 and Figure 3 , an embodiment provided by the present invention: an environmentally friendly treatment process and equipment for medical wastewater, including pretreatment, primary treatment, secondary treatment, disinfection treatment, energy recovery and intelligent management, wherein the pretreatment removes large suspended matter and particulate matter in the wastewater by physical methods, the primary treatment is used to preliminarily decompose organic matter in the wastewater, the secondary treatment is responsible for further degrading organic matter in the wastewater and generating usable energy, the disinfection treatment thoroughly disinfects the wastewater after the secondary treatment by pasteurization steam sterilization, the energy recovery collects the usable energy generated in the secondary treatment to provide energy for the entire wastewater treatment, the intelligent management detects key parameters in the wastewater treatment process in real time by online monitoring equipment, and performs data analysis and decision support through an intelligent control system;

[0038] The pretreatment includes physical filtration and wastewater regulation, the physical filtration includes grid treatment and sedimentation treatment, and the wastewater regulation uses a regulating tank 4 to balance the water quality and water quantity of hospital wastewater;

[0039] The online monitoring equipment includes a suspended matter detector 19 , a pH detector 20 , a heavy metal detector, a microorganism detector and a waterproof camera 10 .

[0040] Further, the medical wastewater is first pre-treated, and the grid 5 is used to effectively intercept large suspended matter and floating matter in the wastewater, such as gauze and blood clots, and then the sedimentation tank is used to remove heavy particulate matter such as silt in the medical wastewater to prevent subsequent treatment from causing equipment blockage or wear. After the large suspended matter and solid particles in the wastewater are removed, the wastewater is allowed to flow into the regulating tank 4. Since the generation of hospital wastewater is discontinuous and the flow rate is volatile, the regulating tank 4 can be used to balance the water quality and water volume, creating stable working conditions for subsequent treatment. By removing larger suspended matter and solid particles in the medical wastewater through pretreatment, these large particulate matter can be prevented from affecting the effect of subsequent treatment steps and reducing equipment loss;

[0041] The pretreated wastewater is then subjected to primary treatment, where most of the suspended solids and some organic matter in the medical wastewater are initially removed by physical methods to improve water transparency. The medical wastewater is then subjected to secondary treatment, where biological treatment technology is used to further degrade the organic matter dissolved in the wastewater, thereby achieving the purpose of purifying the water quality. After biological treatment, activated sludge is separated by sedimentation to remove the biomass and residual suspended matter in the wastewater. The treated medical wastewater is then disinfected, and the pathogens in the wastewater are completely killed by pasteurization steam. Since pathogens are sensitive to heat, they are killed by precisely controlling temperature and time. Bacteria can effectively reduce the number of pathogens without changing the water quality. Finally, the biogas generated in the treatment process is collected and recycled as energy, and converted into electricity to provide energy supply for medical wastewater treatment equipment, reduce the waste of municipal electricity energy, and optimize the energy utilization rate of the entire system. In the process of medical wastewater treatment, intelligent management is used to monitor the entire treatment process in real time, and key parameters such as suspended solids concentration, pH value, heavy metal concentration, number of microorganisms and other data are collected in real time. Data analysis and decision support are carried out through intelligent control systems to optimize treatment operating conditions and energy conservation and emission reduction, thereby improving the efficiency of wastewater treatment.

[0042] Embodiment 2

[0043] See also Figure 1 An embodiment of the present invention is: an environmentally friendly treatment process for medical wastewater and equipment thereof, wherein the primary treatment includes a separation step, a sedimentation step and a decomposition step, wherein the separation step separates fine particles and grease by injecting microbubbles formed by gas into the wastewater, the sedimentation step utilizes a sedimentation tank to remove fine suspended solids and some organic matter, and the decomposition step is used to further decompose organic matter.

[0044] Furthermore, the primary treatment is divided into three steps. First, the pretreated wastewater is decomposed. Microbubbles formed by gas are injected into the wastewater through the microbubble generator 25, which attach to small particles to make them float, thereby achieving the purpose of separating small particles and grease. Then, the sedimentation tank is used to further remove fine suspended solids and some organic matter. Finally, the wastewater is passed into the contact tank for further decomposition treatment to improve the removal rate of suspended solids, reduce the amount of disinfectant used, and reduce environmental impact.

[0045] Embodiment 3

[0046] See also Figure 2 , an embodiment provided by the present invention: an environmentally friendly treatment process and equipment for medical wastewater, wherein the secondary treatment includes biological oxidation, anaerobic digestion and sedimentation processes, wherein the biological oxidation removes organic matter in the wastewater through a contact oxidation tank, the anaerobic digestion decomposes organic pollutants in the wastewater to produce usable resources through the action of anaerobic microorganisms, and the sedimentation process reduces the concentration of suspended matter in the wastewater through physical filtration;

[0047] The biological oxidation includes activated sludge treatment and biofilm treatment. The activated sludge treatment degrades dissolved and colloidal organic pollutants through microbial metabolism, and the biofilm treatment uses a biological filter to degrade organic matter in wastewater.

[0048] The precipitation process includes a filtration step, a membrane separation step and an advanced oxidation step, wherein the filtration step uses activated carbon to remove smaller suspended particles and dissolved organic matter in the wastewater, the membrane separation step is used to remove residual micro-pollutants in the wastewater, and the advanced oxidation step is used to destroy refractory organic matter in the wastewater and kill drug-resistant pathogens;

[0049] The membrane separation step includes microfiltration, ultrafiltration, reverse osmosis and nanofiltration. The microfiltration uses a microfiltration membrane to intercept larger suspended solids in the wastewater, the ultrafiltration uses a hollow fiber membrane to remove macromolecular substances in the wastewater, the reverse osmosis uses a composite membrane to remove heavy metals, ions and various organic substances in the wastewater, and the nanofiltration uses an asymmetric membrane to remove unnecessary minerals and organic matter;

[0050] The advanced oxidation step includes ultraviolet irradiation and hydrogen peroxide treatment. The ultraviolet irradiation uses an ultraviolet disinfection lamp 22 to irradiate the treated wastewater to initially kill bacteria and viruses. The hydrogen peroxide treatment uses the strong oxidizing ability of hydrogen peroxide to quickly destroy difficult-to-degrade organic matter and further kill resistant pathogens.

[0051] Furthermore, after the primary treatment, the wastewater is subjected to secondary treatment, firstly, biological oxidation is carried out, and the organic pollutants in the dissolved and colloidal states in the wastewater are degraded by the metabolism of microorganisms, and the complex organic matter is converted into simple substances, so as to achieve the purpose of purifying the water quality, and then biofilm treatment is used to further degrade the organic matter. The microorganisms in the biological filter tank are attached to the surface of the fixed medium to form a biofilm, and the medical wastewater is purified by contact with these biofilms. Then, the wastewater after biological oxidation treatment is precipitated, and the adsorption effect of activated carbon is first used to remove smaller suspended particles and certain soluble organic matter in the wastewater by physical interception to further improve the effluent quality, and then the residual bacteria, viruses, heavy metal ions and other tiny pollutants in the wastewater are removed by membrane separation, which improves the treatment efficiency. Particles of about 0.1 to 10 microns can be removed by microfiltration technology. Microfiltration mainly relies on physical screening to intercept particles larger than the membrane pore size, and then ultrafiltration technology is used to remove macromolecules and certain colloids of about 0.01 to 0.1 microns, and hollow fiber membranes are used for further physical screening, and then composite membranes are used. High pressure is used to push the solution through a semipermeable membrane to separate water from other dissolved solids, which can effectively remove bacteria, viruses, heavy metal ions and a variety of organic substances in the water. Finally, an asymmetric membrane is used to combine the dual mechanisms of physical screening and charge repulsion to intercept divalent and multivalent ions, thereby removing unnecessary minerals and organic matter in the water. Ultraviolet irradiation is then combined with hydrogen peroxide to destroy difficult-to-degrade organic matter and kill drug-resistant pathogens. High-intensity ultraviolet disinfection lamps 22 are used to destroy the DNA structure of microorganisms and achieve rapid disinfection. This method does not require the use of chemical additives and avoids the risk of secondary pollution. Microorganisms are then killed by the strong oxidizing properties of hydrogen peroxide, and hydrogen peroxide will quickly decompose after contact with many inorganic compounds or impurities, releasing a large amount of oxygen, heat energy and water vapor. Through this process, the cell structure of microorganisms is destroyed, thereby achieving a sterilization effect. This disinfection method will not cause secondary pollution. Through a multi-stage treatment process, it is ensured that medical wastewater is safely and effectively treated, the wastewater treatment efficiency is improved, and no pollution is caused to the environment.

[0052] Embodiment 4

[0053] See also Figure 4 and Figure 5, an embodiment provided by the present invention: an environmentally friendly treatment process and equipment for medical wastewater, comprising a pretreatment box 1, a partition 6 is installed inside the pretreatment box 1, and the partition 6 is used to separate the pretreatment box 1 into a sedimentation area 3 and a regulating tank 4, a grid 5 is installed inside the sedimentation area 3, a water inlet pipe 17 and a motor box 7 are installed on the top of the pretreatment box 1, and the motor box 7 is located in front of the water inlet pipe 17, the water inlet pipe 17 is connected to the sedimentation area 3, a control motor 8 is installed inside the motor box 7, a stirring device 9 is installed at the output end of the control motor 8, and the stirring device 9 is located inside the regulating tank 4, a waterproof camera 10 is installed on the top wall of the regulating tank 4, and the waterproof camera 10 is located in front of the stirring device 9, a water outlet connection port 12 is installed on the front of the pretreatment box 1, a water pump 11 is installed on the bottom wall of the regulating tank 4, a connecting water pipe is installed at the output end of the water pump 11, and one end of the connecting water pipe is connected to the water outlet connection port 12.

[0054] Furthermore, the pretreatment box 1 is used to pre-treat medical wastewater, and the medical wastewater flows into the pretreatment box 1 from the water inlet pipe 17, and the gauze and blood clots are intercepted by the grille 5. Then the wastewater is temporarily stored in the sedimentation area 3, and is left to stand for a period of time to remove heavier particulate matter such as mud and sand in the medical wastewater to prevent subsequent treatment from causing equipment blockage or wear. Then the wastewater flows into the regulating tank 4, and the control motor 8 is controlled to run, driving the stirring device 9 to rotate and stir the water in the regulating tank 4 to balance the concentration of pollutants in the wastewater and achieve the purpose of stabilizing the water quality. The wastewater is extracted by the water pump 11 and allowed to flow into the environmental protection treatment device 2. The operating speed of the water pump 11 is adjusted to match the processing capacity of the subsequent treatment equipment, thereby avoiding the impact or inefficiency of the system caused by excessive or insufficient flow, so as to achieve a balanced and stable fluctuation in the water inlet volume and ensure that the subsequent treatment facilities can handle a constant flow.

[0055] Embodiment 5

[0056] See also Figure 6, an embodiment provided by the present invention: an environmental protection treatment process and equipment for medical waste water, wherein a connecting pipe is installed at one end of the water outlet connection port 12, an environmental protection treatment device 2 is installed at one end of the connecting pipe, and the environmental protection treatment device 2 is located in front of the pretreatment box 1, two groups of equally spaced partitions 16 are installed inside the environmental protection treatment device 2, and the partition 16 is used to separate the environmental protection treatment device 2 from left to right into a first treatment tank 13, a second treatment tank 14 and a disinfection tank 15, an opening is opened through the inside of the partition 16, a one-way valve 18 is installed inside the opening, a suspended matter detector 19 and a pH detector 20 are installed on one side of the partition 16 and the front wall of the environmental protection treatment device 2, and the pH detector 20 is located below the suspended matter detector 19, an ultraviolet disinfection lamp 22 is installed on the top wall of the environmental protection treatment device 2, and the ultraviolet disinfection lamp 22 is located inside the second treatment tank 14, and a feed port 21 is installed on the top wall of the environmental protection treatment device 2, and the feed port 21 is used to add microorganisms to the second treatment tank 14.

[0057] Further, the pretreated wastewater enters the environmental protection treatment device 2, and first enters the first treatment tank 13 for primary treatment, wherein the microbubble generator 25 is used to generate microbubbles, and then due to the one-way effect of the one-way valve 18, the wastewater flows into the second treatment tank 14 for secondary treatment, and then the wastewater flows into the disinfection tank 15 from the opening for disinfection treatment, wherein the ultraviolet disinfection lamp 22 is responsible for irradiating the wastewater with ultraviolet rays to destroy difficult-to-degrade organic matter and kill drug-resistant pathogens, and during the wastewater treatment process, the suspended matter detector 19 and the pH detector 20 monitor the suspended matter concentration and pH value of the wastewater in real time, and the operating parameters of the treatment process can be adjusted according to the real-time data. At the same time, it is judged whether the water quality meets the national emission standards based on the real-time data. If it does not meet the standards, it is prohibited to discharge it directly from the drain outlet 23. The treated wastewater needs to be introduced into the pretreatment box 1 for re-treatment until the detection parameters meet the standards to ensure that it will not cause pollution to the environment before it can be directly discharged to the outside.

[0058] Embodiment 6

[0059] See also Figure 4 An embodiment of the present invention is: an environmentally friendly treatment process and equipment for medical wastewater, wherein a drain outlet 23 is installed on the front of the environmental protection treatment device 2, and the drain outlet 23 is connected to the disinfection tank 15, and a control panel 24, a feeding port 27 and a connecting channel 26 are installed on the outer wall of one side of the environmental protection treatment device 2, and the feeding port 27 is located behind the control panel 24, the feeding port 27 is connected to the second treatment tank 14, and the connecting channel 26 is connected to the first treatment tank 13, and a microbubble generator 25 is installed at one end of the connecting channel 26, and the microbubble generator 25 is located on one side of the environmental protection treatment device 2.

[0060] Furthermore, the feed port 21 is used to add microorganisms to the second treatment tank 14, and the feed port 27 is used to add hydrogen peroxide to the second treatment tank 14. The control panel 24 is convenient for the operator to view various data of the wastewater treatment process, and the operating parameters can be adjusted through the control panel 24 to control the wastewater treatment process.

[0061] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An environmentally friendly treatment process for medical wastewater, characterized in that: It includes pretreatment, primary treatment, secondary treatment, disinfection, energy recovery and intelligent management. The pretreatment removes large suspended solids and particulate matter in the wastewater by physical methods. The primary treatment is used to preliminarily decompose organic matter in the wastewater. The secondary treatment is responsible for further degrading organic matter in the wastewater and generating usable energy. The disinfection thoroughly disinfects the wastewater after the secondary treatment by pasteurization steam sterilization. The energy recovery collects the usable energy generated in the secondary treatment to provide energy for the entire wastewater treatment. The intelligent management detects key parameters in the wastewater treatment process in real time through online monitoring equipment, and performs data analysis and decision support through an intelligent control system. The pretreatment includes physical filtration and wastewater conditioning, the physical filtration includes grid treatment and sedimentation treatment, and the wastewater conditioning uses a regulating tank (4) to balance the water quality and water quantity of hospital wastewater; The online monitoring equipment comprises a suspended matter detector (19), a pH detector (20), a heavy metal detector, a microorganism detector and a waterproof camera (10).

2. The environmentally friendly treatment process for medical wastewater according to claim 1, characterized in that: The primary treatment includes a separation step, a sedimentation step and a decomposition step. The separation step separates fine particles and grease by injecting microbubbles formed by gas into the wastewater. The sedimentation step uses a sedimentation tank to remove fine suspended solids and some organic matter. The decomposition step is used to further decompose organic matter.

3. The environmentally friendly treatment process for medical wastewater according to claim 1, characterized in that: The secondary treatment includes biological oxidation, anaerobic digestion and sedimentation processes. The biological oxidation removes organic matter in the wastewater through a contact oxidation tank. The anaerobic digestion decomposes organic pollutants in the wastewater to produce usable resources through the action of anaerobic microorganisms. The sedimentation process reduces the concentration of suspended matter in the wastewater through physical filtration.

4. The environmentally friendly treatment process for medical wastewater according to claim 3 is characterized in that: The biological oxidation includes activated sludge treatment and biofilm treatment. The activated sludge treatment degrades dissolved and colloidal organic pollutants through microbial metabolism, and the biofilm treatment uses a biological filter to degrade organic matter in wastewater.

5. The environmentally friendly treatment process for medical wastewater according to claim 3 is characterized by: The precipitation process includes a filtration step, a membrane separation step and an advanced oxidation step. The filtration step uses activated carbon to remove smaller suspended particles and soluble organic matter in the wastewater, the membrane separation step is used to remove residual micro-pollutants in the wastewater, and the advanced oxidation step is used to destroy the difficult-to-degrade organic matter in the wastewater and kill resistant pathogens.

6. The environmentally friendly treatment process for medical wastewater according to claim 5, characterized in that: The membrane separation step includes microfiltration, ultrafiltration, reverse osmosis and nanofiltration. The microfiltration uses a microfiltration membrane to intercept larger suspended matter in the wastewater, the ultrafiltration uses a hollow fiber membrane to remove macromolecular substances in the wastewater, the reverse osmosis uses a composite membrane to remove heavy metals, ions and various organic substances in the wastewater, and the nanofiltration uses an asymmetric membrane to remove unnecessary minerals and organic matter.

7. The environmentally friendly treatment process for medical wastewater according to claim 5, characterized in that: The advanced oxidation step includes ultraviolet irradiation and hydrogen peroxide treatment. The ultraviolet irradiation uses an ultraviolet disinfection lamp (22) to irradiate the treated wastewater to initially kill bacteria and viruses. The hydrogen peroxide treatment uses the strong oxidizing ability of hydrogen peroxide to quickly destroy refractory organic matter and further kill drug-resistant pathogens.

8. An environmentally friendly treatment device for medical wastewater, applicable to the environmentally friendly treatment process for medical wastewater according to any one of claims 1 to 7, characterized in that: The invention comprises a pretreatment box (1), wherein a partition plate (6) is installed inside the pretreatment box (1), and the partition plate (6) is used to separate the pretreatment box (1) into a sedimentation area (3) and a regulating tank (4), wherein a grille (5) is installed inside the sedimentation area (3), and a water inlet pipe (17) and a motor box (7) are installed on the top of the pretreatment box (1), and the motor box (7) is located in front of the water inlet pipe (17), and the water inlet pipe (17) is connected to the sedimentation area (3), and a control motor (8) is installed inside the motor box (7), and the The output end of the control motor (8) is equipped with a stirring device (9), and the stirring device (9) is located inside the regulating tank (4); the top wall of the regulating tank (4) is equipped with a waterproof camera (10), and the waterproof camera (10) is located in front of the stirring device (9); the front of the pretreatment box (1) is equipped with a water outlet connection port (12); the bottom wall of the regulating tank (4) is equipped with a water pump (11); the output end of the water pump (11) is equipped with a connecting water pipe, and one end of the connecting water pipe is connected to the water outlet connection port (12).

9. The environmentally friendly treatment equipment for medical wastewater according to claim 8, characterized in that: A connecting pipe is installed at one end of the water outlet connection port (12), an environmental protection treatment device (2) is installed at one end of the connecting pipe, and the environmental protection treatment device (2) is located in front of the pretreatment box (1), and two groups of equally spaced partitions (16) are installed inside the environmental protection treatment device (2), and the partitions (16) are used to separate the environmental protection treatment device (2) from left to right into a first treatment pool (13), a second treatment pool (14) and a disinfection pool (15), and an opening is opened inside the partition (16), and a one-way A valve (18), a suspended matter detector (19) and a pH detector (20) are installed on one side of the partition plate (16) and the front wall of the environmental protection treatment device (2), and the pH detector (20) is located below the suspended matter detector (19), an ultraviolet disinfection lamp (22) is installed on the top wall of the environmental protection treatment device (2), and the ultraviolet disinfection lamp (22) is located inside the second treatment tank (14), and a feed port (21) is installed on the top wall of the environmental protection treatment device (2), and the feed port (21) is used to add microorganisms to the second treatment tank (14).

10. The environmentally friendly treatment equipment for medical wastewater according to claim 9, characterized in that: A drain port (23) is installed on the front of the environmental protection treatment device (2), and the drain port (23) is connected to the disinfection tank (15). A control panel (24), a feeding port (27) and a connecting channel (26) are installed on one side of the outer wall of the environmental protection treatment device (2), and the feeding port (27) is located behind the control panel (24). The feeding port (27) is connected to the second treatment tank (14), and the connecting channel (26) is connected to the first treatment tank (13). A microbubble generator (25) is installed at one end of the connecting channel (26), and the microbubble generator (25) is located on one side of the environmental protection treatment device (2).

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