CN114477628A - Medical wastewater treatment system of integration - Google Patents
Medical wastewater treatment system of integration Download PDFInfo
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- CN114477628A CN114477628A CN202210044888.3A CN202210044888A CN114477628A CN 114477628 A CN114477628 A CN 114477628A CN 202210044888 A CN202210044888 A CN 202210044888A CN 114477628 A CN114477628 A CN 114477628A
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Images
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/003—Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses an integrated medical wastewater treatment system, which relates to the field of medical wastewater treatment.A treatment device is provided with a primary sedimentation tank, a secondary sedimentation tank, a membrane treatment area and a chemical treatment area which are sequentially connected, so that the medical wastewater is subjected to multistage treatment, components with different properties in the medical wastewater can be treated in a layered manner, the whole treatment process is simple in process, a plurality of processes are saved compared with separate treatment, and the treatment effect on the medical wastewater is improved; meanwhile, each area of the processing device is connected with the industrial control system, and the material inlet and outlet and circulation speed of the processing device are controlled by the industrial control system, so that continuous and stable work of each area can be better coordinated.
Description
Technical Field
The invention belongs to the field of medical wastewater treatment, and particularly relates to an integrated medical wastewater treatment system.
Background
In recent years, with the improvement of the discharge standard of hospital sewage, the city in the part of the country aims to optimize a better sewage treatment process or improve the original treatment process so as to enable the sewage discharge to meet the requirement of a new discharge standard.
The medical sewage is mainly sewage discharged from diagnosis and treatment rooms, laboratory rooms, ward rooms, laundry rooms, X-ray photography rooms, operating rooms and the like of hospitals, and the source and the components of the sewage are very complex. Hospital sewage contains a large amount of pathogenic bacteria, viruses and chemical agents and has the characteristics of space pollution, acute infection and latent infection. The medical wastewater contains a large amount of pathogens such as bacteria, viruses, ova and the like, and also contains chemical agents and radioactive isotopes, and has several characteristics of space pollution, acute infection and latent infection. If medical sewage containing pathogenic microorganisms is directly discharged into urban sewers without being subjected to harmless treatment such as disinfection and inactivation, the pollution of water and soil is often caused, various diseases are seriously caused, or the outbreak of water-mediated infectious diseases is caused. Therefore, the medical wastewater must be treated and discharged after reaching the standard.
However, the existing medical wastewater treatment equipment usually adopts different equipment for treating different types of wastewater, and hospital wastewater treatment is classified according to hospital properties, scale, wastewater discharge destination and regional differences, namely, the wastewater and sewage generation source are strictly controlled and separated, the source is controlled and the sewage is cleaned and shunted, the whole treatment process is complicated in process and more in flow, and hospitals cannot strictly divide the types of medical wastewater, so that various types of wastewater with different properties are always treated in the medical wastewater, the method for separately treating the wastewater can only treat one type of wastewater, if the wastewater is treated only by classification, only one type of property in the discharged medical wastewater can reach the standard, the physicochemical properties of other components can be seriously exceeded the discharge condition, water and soil pollution is easily caused, and various diseases are seriously caused, or cause fulminant epidemics of water-mediated infectious diseases.
Disclosure of Invention
In order to solve the above problems of the prior art, the present invention is directed to an integrated medical wastewater treatment system.
The technical scheme adopted by the invention is as follows:
an integrated medical wastewater treatment system, characterized in that: the system comprises an industrial control system and a treatment device, wherein the treatment device comprises a primary sedimentation tank, a secondary sedimentation tank, a membrane treatment area, a chemical treatment area, a solid waste treatment tank and a buffer tank, the primary sedimentation tank, the secondary sedimentation tank, the membrane treatment area, the chemical treatment area and the buffer tank are sequentially connected with an inlet and an outlet of liquid materials, and solid waste outlets of the primary sedimentation tank, the secondary sedimentation tank, the membrane treatment area and the chemical treatment area are all connected with the solid waste treatment tank; the industrial control system is used for controlling the material to enter and exit among all elements of the processing device;
the primary sedimentation tank is used for carrying out primary sedimentation separation on the medical wastewater into primary supernatant and primary sedimentation, and a primary supernatant outlet of the primary sedimentation tank is connected with the secondary sedimentation tank;
the secondary sedimentation tank is used for separating the primary supernatant into secondary supernatant and secondary sediment, an anaerobic biomembrane carrier is arranged in the secondary supernatant and used for decomposing part of organic matters in the secondary supernatant, and an outlet of the secondary supernatant is connected with the membrane treatment area;
a plurality of aerobic biomembrane carriers are uniformly arranged in the membrane treatment area, an air spray pipe is arranged below the aerobic biomembrane carriers, the air spray pipe is used for continuously supplementing air to the inside of the membrane treatment area, the aerobic biomembrane carriers are used for decomposing the secondary supernatant into tertiary supernatant and tertiary precipitate which are more in line with the emission standard, and an outlet of the tertiary supernatant is connected with the chemical treatment area;
the chemical treatment area is used for sterilizing the third-level supernatant to form a fourth-level precipitate and a fourth-level supernatant meeting the discharge standard, and an outlet of the fourth-level supernatant is connected with the buffer pool;
the solid waste treatment tank is used for receiving and storing the first-stage sediment, the second-stage sediment, the third-stage sediment and the fourth-stage sediment;
the buffer pool is used for receiving and storing the four-level supernatant, a first outlet of the buffer pool is connected with an external discharge environment, and a second outlet of the buffer pool is connected with the second-level sedimentation pool.
Optionally, the industrial control system is connected with a stirring mechanism, the stirring mechanism comprises a first stirrer installed on the primary sedimentation tank and a second stirrer installed on the chemical treatment area, the first stirrer is used for stirring solid waste deposited at the bottom of the primary sedimentation tank, and the second stirrer is used for uniformly mixing chemical agents and tertiary supernatant in the chemical treatment area.
Optionally, the industrial control system is further connected with a feedback mechanism, and the feedback mechanism includes a first sensor, a second sensor, a third sensor, a fourth sensor and a fifth sensor;
the first sensor is arranged at the bottom of the inner side wall of the primary sedimentation tank and used for detecting the information of the sedimentation amount of the primary sedimentation and feeding the information back to the industrial control system;
the second sensor is arranged at the top of the inner side wall of the secondary sedimentation tank and used for detecting the liquid level information of the secondary supernatant and feeding the liquid level information of the secondary supernatant back to the industrial control system;
the third sensor is arranged at the bottom of the inner side wall of the secondary sedimentation tank and used for detecting the sedimentation amount information of the secondary sedimentation and feeding back the information to the industrial control system;
the fourth sensor is arranged on the top of the inner side wall of the membrane processing area and used for detecting liquid level information of the tertiary supernatant and feeding the information back to the industrial control system;
and the fifth sensor is arranged at the bottom of the inner side wall of the film processing area and is used for detecting the deposition amount information of the three-stage deposition and feeding the information back to the industrial control system.
Optionally, the industrial control system is further connected with a power mechanism and a control mechanism, wherein the power mechanism comprises a fluid delivery pump arranged at a material inlet and a material outlet of the primary sedimentation tank, the secondary sedimentation tank, the membrane treatment area, the chemical treatment area, the solid waste treatment tank and the buffer tank; the control mechanism comprises a control valve group which is arranged at a material inlet and a material outlet of a primary sedimentation tank, a secondary sedimentation tank, a membrane treatment area, a chemical treatment area, a solid waste treatment tank and a buffer tank.
Optionally, an outlet of the second-level supernatant is connected with the bottom of the membrane reaction zone, an inlet of the second-level supernatant in the membrane reaction zone is located below the air spray pipe, a return pipeline is installed in the membrane reaction zone and used for conveying the intermediate layer of the third-level supernatant back to the second-level sedimentation tank, a second one-way valve is installed on the return pipeline, and an interface of the return pipeline is located between the aerobic biofilm carrier and the air spray pipe.
Optionally, a filter screen is further disposed in the membrane reaction zone, and the filter screen is located between the backflow pipeline interface and the air shower.
Optionally, the chemical treatment area is connected with a disinfectant storage chamber, and an interface between the disinfectant storage chamber and the chemical treatment area is positioned above the stirring paddle of the second stirrer.
Optionally, the industrial control system is further connected with an air compression system, and the air compression system comprises a first blowback pipe, a second blowback pipe and a third blowback pipe which are respectively connected with the membrane reaction zone, the secondary sedimentation tank and the primary sedimentation tank solid waste outlet pipeline.
Optionally, a disinfection chamber is arranged between the chemical treatment area and the buffer pool, and the disinfection chamber is used for carrying out ultraviolet irradiation disinfection on the four-stage supernatant.
Optionally, the aerobic biofilm carrier comprises a porous carrier plate, and biofilms for cultivating aerobic bacteria are laid on both sides of the porous carrier plate.
The invention has the beneficial effects that:
1) the invention provides an integrated medical wastewater treatment system, which is characterized in that a treatment device is provided with a primary sedimentation tank, a secondary sedimentation tank, a membrane treatment area and a chemical treatment area which are sequentially connected, so that the medical wastewater is subjected to multistage treatment, components with different properties in the medical wastewater can be treated in a layering manner, the whole treatment process is simple, a plurality of processes are omitted compared with separate treatment, and the treatment effect on the medical wastewater is improved.
2) All areas of the processing device are connected with the industrial control system, and the material inlet and outlet and circulation speed of the processing device are controlled by the industrial control system, so that continuous and stable work of all areas can be better coordinated.
3) Have to be provided with the return line between membrane reaction zone and the second grade sedimentation tank, when detecting that the macromolecular pollutant among the tertiary supernatant exceeds standard, can handle macromolecular pollutant etc. in medical waste water once more to tertiary supernatant backward flow to second grade sedimentation tank utilization anaerobe.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an air shower;
FIG. 3 is a schematic structural view of a biofilm carrier;
FIG. 4 is a schematic view of the structure of the sterilization chamber;
in the figure: 1-a primary sedimentation tank, 11-a first stirrer, 12-a first sensor, 2-a secondary sedimentation tank, 21-a second sensor, 22-a third sensor, 23-an anaerobic biofilm carrier, 24-a first fluid delivery pump, 25-a first one-way valve, 3-a membrane reaction zone, 31-an aerobic biofilm carrier, 311-a porous carrier plate, 312-a biofilm, 33-a filter screen, 34-an air shower, 341-an air nozzle, 35-a fifth sensor, 36-a second fluid delivery pump, 37-a second one-way valve, 38-a fourth sensor, 4-a chemical treatment zone, 41-a second stirrer, 42-a third fluid delivery pump, 43-a third one-way valve, 44-a disinfection chamber, 441-an ultraviolet lamp, 5-disinfectant storage chamber, 6-solid waste treatment pool, 7-buffer pool, 71-fourth fluid delivery pump, 72-fifth fluid delivery pump, 8-air pressure system, 81-first back-blowing gas pipe, 82-second back-blowing gas pipe and 83-third back-blowing gas pipe.
Detailed Description
In this embodiment, as shown in fig. 1, an integrated medical wastewater treatment system includes an industrial control system and a treatment apparatus, the treatment apparatus includes a primary sedimentation tank 1, a secondary sedimentation tank 2, a membrane treatment area 3, a chemical treatment area 4, a solid wastewater treatment tank 6 and a buffer tank 7, the primary sedimentation tank 1, the secondary sedimentation tank 2, the membrane treatment area 3, the chemical treatment area 4 and the buffer tank 7 are sequentially connected with an inlet and an outlet of a liquid material, and solid wastewater outlets of the primary sedimentation tank 1, the secondary sedimentation tank 2, the membrane treatment area 3 and the chemical treatment area 4 are all connected with the solid wastewater treatment tank 6; the industrial control system is used for controlling the material to enter and exit among all the elements of the processing device.
In this embodiment, specifically, a grid plate is arranged at an inlet of the primary sedimentation tank 1, and the grid plate is used for intercepting solid waste which has a large size and specification and cannot be processed by a subsequent system outside the system.
In the present embodiment, as shown in fig. 1, the primary sedimentation tank 1 is used for primary sedimentation separation of medical wastewater into primary supernatant and primary sediment. Specifically, the primary sedimentation tank 1 is mainly used for standing and depositing some medical solid wastes with large mass to the bottom to form primary sediment. The primary supernatant mainly comprises medical wastewater, the primary supernatant contains organic solution, inorganic solution, part of suspended matters and the like which cannot be subjected to sedimentation treatment, the organic solution contains more pollution components with larger molecules, including but not limited to pathogens, bacteria and the like, and a primary supernatant outlet of the primary sedimentation tank 1 is connected with the secondary sedimentation tank 2.
In this embodiment, as shown in fig. 1, the secondary sedimentation tank 2 is configured to precipitate the primary supernatant to separate the primary supernatant into a secondary supernatant and a secondary precipitate, the secondary supernatant is provided with an anaerobic biofilm carrier 23, the anaerobic biofilm carrier 23 is configured to decompose a part of organic matters in the secondary supernatant, and an outlet of the secondary supernatant is connected to the membrane treatment area 3; specifically, the anaerobic biofilm carrier 23 contains more anaerobic bacteria, so the secondary sedimentation tank 2 should be sealed, and the inlet and outlet of each material should be provided with a one-way valve to prevent air from entering. The purpose of setting up anaerobism biomembrane carrier 23 is to carry out an acidolysis process with the macromolecular pollutants who is difficult to degrade in the first order supernatant sewage, degrade the macromolecular organic matter pollution source of difficult degradation into the micromolecular inorganic matter of easy degradation, the first order supernatant decomposes a period of time back at second grade sedimentation tank 2, the liquid on second grade sedimentation tank 2 upper portion has then become the second grade supernatant that only contains a small amount of macromolecular organic matter, the bottom at second grade sedimentation tank 2 is then deposited to suspended solid and other density in the first order supernatant are greater than the polluted component of second grade supernatant, the reaction in the second grade sedimentation tank can to a great extent get rid of the pathogen, polluted component such as bacterium.
In this embodiment, as shown in fig. 1 and fig. 3, a plurality of aerobic biofilm carriers 31 are uniformly disposed inside the membrane treatment zone 3, the aerobic biofilm carriers 31 include a porous support plate 311, two sides of the porous support plate 311 are both paved with biofilms 312 for cultivating aerobic bacteria, and the aerobic organisms are used for treating other toxic substances in the secondary supernatant, such as heavy metal ions, e.g., nickel, lead, and organic pollutants, e.g., amine, benzene.
In this embodiment, as shown in fig. 1 and fig. 2, an air shower 34 is disposed below the aerobic biofilm carrier 31, a plurality of air nozzles 341 are disposed above the air shower 34, the top of the air nozzles 341 is tapered to effectively prevent liquid from flowing backwards, and the air shower 34 is connected to the air compression system 8 to continuously supply air to the inside of the membrane treatment zone 34, so as to improve the activity of aerobic bacteria and accelerate the decomposition speed. The secondary supernatant is decomposed into a tertiary supernatant and a tertiary precipitate which are more in accordance with the discharge standard through the aerobic biomembrane carrier 31, and the outlet of the tertiary supernatant is connected with the chemical treatment area 4. The third-level supernatant contains only a small amount of toxic and harmful substances; the deposition amount of the tertiary precipitate is small, and the main component of the tertiary precipitate is some polymers with a relative density phase smaller than that of the tertiary supernatant.
In this embodiment, as shown in fig. 1, a filter screen 33 is further disposed in the membrane reaction zone 3, the filter screen 33 is located between the interface of the backflow pipeline and the air shower 34, and the filter screen 33 is mainly used for preventing the solid component of the second-level supernatant from being blown to the upper-level third-level supernatant by the compressed air of the air shower 34 when the second-level supernatant enters the membrane reaction zone 3.
In this embodiment, as shown in fig. 1, the outlet of the secondary supernatant is connected to the bottom of the membrane reaction zone 3, the inlet of the secondary supernatant on the membrane reaction zone 3 is located below the air shower 34, the membrane reaction zone 3 is provided with a return line, the return line is used to transport the intermediate layer of the tertiary supernatant back to the secondary sedimentation tank 2, the return line is provided with a second check valve 37, the return line is located between the aerobic biofilm carrier 31 and the filter screen 33 at the interface of the membrane reaction zone 3, and the return line transports the liquid in the tertiary supernatant back to the secondary sedimentation tank 2 through the second fluid transport pump 36 to perform the decomposition of macromolecules again. The second check valve 37 is used to prevent backflow.
In this embodiment, as shown in fig. 1, the chemical treatment zone 4 is used for sterilizing the tertiary supernatant into a quaternary precipitate and a quaternary supernatant meeting the discharge standard, and the outlet of the quaternary supernatant is connected with the buffer tank 7; the chemical treatment area 4 is connected with a disinfectant storage chamber 5, and the interface between the disinfectant storage chamber 5 and the chemical treatment area 4 is positioned above the stirring paddle of the second stirrer 41. Disinfectant storage chamber 5 is filled with disinfectant solution mainly comprising ClO2，ClO2The solubility of chlorine dioxide in water is five times of that of chlorine, its oxidizing power is about two hundred times of that of chlorine gas, and it is a strong oxidant. Is the only high-efficiency disinfectant in chlorine-containing disinfection internationally recognized. It can kill all microorganisms including bacterial propagules, cell spores, fungi, mycobacteria, viruses, etc. It can effectively destroy trace organic pollutants in water, such as benzopyrene anthraquinone, chloroform, carbon tetrachloride, phenol, chlorophenol, cyanide, hydrogen sulfide, organic sulfide and the like. Can very muchWell oxidizing some reduced metal ions such as Fe in water2+、Mn2+、Ni2+And the like. Chlorine dioxide has the greatest advantage of hardly generating divergent organic halides when reacting with humus and organic matter, of not generating and inhibiting the generation of carcinogenic trihalomethanes, and of not reacting with ammonia and amino compounds.
In this embodiment, as shown in fig. 1 and 4, a sterilizing chamber 44 is installed between the chemical treatment zone 4 and the buffer tank 7, a plurality of ultraviolet lamps are installed on the top wall of the sterilizing chamber 44, and the sterilizing chamber 44 is used for sterilizing the four-stage supernatant by ultraviolet irradiation.
In the embodiment, as shown in fig. 1, the solid waste treatment tank 6 is used for receiving and storing the first-stage precipitation, the second-stage precipitation, the third-stage precipitation and the fourth-stage precipitation; the solid sediment in the solid waste treatment tank 6 is treated by other medical solid treatment methods meeting the relevant standards, which are not described herein.
In this embodiment, as shown in fig. 1, the buffer tank 7 is used for receiving and storing the four-stage supernatant which meets the relevant discharge standard at this time, the four-stage supernatant meeting the discharge standard is discharged out of the system by the fourth fluid transfer pump 71 of the buffer tank 7, and the second outlet of the buffer tank 7 is connected with the secondary sedimentation tank 2. Simultaneously, buffer tank 7 also communicates with second grade sedimentation tank 2, carries the level four supernatant to second grade sedimentation tank 2 through fifth fluid delivery pump 72 in, and the level four supernatant in buffer tank 7 contains partial disinfectant, can be better clear up pathogen, bacterium etc. in the second grade sedimentation tank 2.
In this embodiment, as shown in fig. 1, the industrial control system is connected with a stirring mechanism, the stirring mechanism includes a first stirrer 11 installed on the primary sedimentation tank 1 and a second stirrer 41 installed on the chemical treatment area 4, the first stirrer 11 is used for stirring the solid waste deposited at the bottom of the primary sedimentation tank 1, and the second stirrer 41 is used for uniformly mixing the chemical agent in the chemical treatment area 4 with the tertiary supernatant; the industrial control system is also connected with a feedback mechanism, and the feedback mechanism comprises a first sensor 12, a second sensor 21, a third sensor 22, a fourth sensor 38 and a fifth sensor 35.
In this embodiment, the industrial control system is further connected with a power mechanism and a control mechanism, wherein the power mechanism comprises a fluid delivery pump set which is arranged at material inlets and material outlets of a primary sedimentation tank 1, a secondary sedimentation tank 2, a membrane treatment area 3, a chemical treatment area 4, a solid waste treatment tank 6 and a buffer tank 7; the control mechanism comprises a control valve group which is arranged at material inlets and material outlets of a primary sedimentation tank 1, a secondary sedimentation tank 2, a membrane treatment area 3, a chemical treatment area 4, a solid waste treatment tank 6 and a buffer tank 7.
Specifically, the fluid delivery pump set includes, but is not limited to: a first fluid transfer pump 24, a second fluid transfer pump 36, a third fluid transfer pump 42, a fourth fluid transfer pump 71, and a fifth fluid transfer pump 72; the control valve set includes, but is not limited to, a regulating valve (not shown) for each material inlet/outlet, a first check valve 25, a second check valve 37, and a third check valve 43.
In the present embodiment, specifically, the first sensor 12, the third sensor 22, and the fifth sensor 35 are all pressure sensors, and the second sensor 21 and the fourth sensor 38 are contact liquid level sensors.
In this embodiment, as shown in fig. 1, the first sensor 12 is installed at the bottom of the inner side wall of the primary sedimentation tank 1, the first sensor 12 is configured to detect information of the deposition amount of the primary sedimentation and feed the information back to the industrial control system, when the pressure received by the first sensor 12 reaches a preset value, the industrial control system opens a valve of the solid material outlet pipeline of the primary sedimentation tank 1 and a solid material delivery pump to discharge slag, and the first stirrer 11 is started to stir solid waste at the bottom, so as to accelerate slag discharge; when the pressure received by the first sensor 12 is smaller than a preset value, the industrial control system closes the valve of the solid material outlet pipeline of the primary sedimentation tank 1, the solid material delivery pump and the first stirrer 11.
In this embodiment, as shown in fig. 1, the second sensor 21 is installed at the top of the inner side wall of the secondary sedimentation tank 2, and is configured to detect liquid level information of the secondary supernatant, and feed back the liquid level information of the secondary supernatant to the industrial control system; when the liquid level reaches the position of the second sensor 21, the industrial control system opens the first fluid delivery pump 24, the second-level supernatant is delivered to the membrane reaction zone 3, after a period of delivery, the first fluid delivery pump 24 is closed, and meanwhile, the first check valve 25 arranged at the outlet end of the first fluid delivery pump 24 can effectively prevent the material in the membrane reaction zone 3 from flowing back.
In the embodiment, the third sensor 22 is installed at the bottom of the inner side wall of the secondary sedimentation tank 2 and is used for detecting the deposition amount information of the secondary sedimentation and feeding the information back to the industrial control system; when the pressure received by the third sensor 22 reaches a preset value, the industrial control system opens the valve of the solid material outlet pipeline of the secondary sedimentation tank 2 and the solid material delivery pump to discharge slag, and when the pressure received by the third sensor 22 is smaller than the preset value, the industrial control system closes the valve of the solid material outlet pipeline of the secondary sedimentation tank 2 and the solid material delivery pump.
In the embodiment, the fourth sensor 38 is installed on the top of the inner side wall of the membrane processing area 3 and is used for detecting the liquid level information of the tertiary supernatant and feeding the information back to the industrial control system; the fifth sensor 35 is installed at the bottom of the inner side wall of the film processing area 3 and is used for detecting the deposition amount information of the three-stage deposition and feeding the information back to the industrial control system. The functions of the fourth sensor 38 and the fifth sensor 35 are the same as those of the second sensor 21 and the third sensor 22, and are not described in detail here.
The industrial control system still is connected with air compression system 8, air compression system 8 including respectively with utensil membrane reaction zone 3, the first blowback gas pipe 81 of the solid useless export pipe connection of second grade sedimentation tank 2 and one-level sedimentation tank 1, second blowback gas pipe 82 and third blowback gas pipe 83, first blowback gas pipe 81, second blowback gas pipe 82 and third blowback gas pipe 83 are used for carrying out the blowback when utensil membrane reaction zone 3, second grade sedimentation tank 2 and one-level sedimentation tank 1 arrange the sediment, prevent that solid deposition from plugging up the slag discharge opening.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An integrated medical wastewater treatment system, characterized in that: the system comprises an industrial control system and a treatment device, wherein the treatment device comprises a primary sedimentation tank (1), a secondary sedimentation tank (2), a membrane treatment area (3), a chemical treatment area (4), a solid waste treatment tank (6) and a buffer tank (7), the primary sedimentation tank (1), the secondary sedimentation tank (2), the membrane treatment area (3), the chemical treatment area (4) and a liquid material inlet and outlet of the buffer tank (7) are sequentially connected, and solid waste outlets of the primary sedimentation tank (1), the secondary sedimentation tank (2), the membrane treatment area (3) and the chemical treatment area (4) are all connected with the solid waste treatment tank (6); the industrial control system is used for controlling the material to enter and exit among all elements of the processing device;
the primary sedimentation tank (1) is used for carrying out primary sedimentation separation on the medical wastewater into primary supernatant and primary sedimentation, and a primary supernatant outlet of the primary sedimentation tank (1) is connected with the secondary sedimentation tank (2);
the secondary sedimentation tank (2) is used for precipitating the primary supernatant to be divided into secondary supernatant and secondary precipitate, an anaerobic biomembrane carrier (23) is arranged in the secondary supernatant, the anaerobic biomembrane carrier (23) is used for decomposing part of organic matters in the secondary supernatant, and an outlet of the secondary supernatant is connected with the membrane treatment area (3);
a plurality of aerobic biomembrane carriers (31) are uniformly arranged in the membrane treatment area (3), an air spray pipe (34) is arranged below the aerobic biomembrane carriers (31), the air spray pipe (34) is used for continuously supplementing air to the interior of the membrane treatment area (34), the aerobic biomembrane carriers (31) are used for decomposing secondary supernatant into tertiary supernatant and tertiary precipitate which are more in line with the discharge standard, and an outlet of the tertiary supernatant is connected with the chemical treatment area (4);
the chemical treatment area (4) is used for sterilizing the tertiary supernatant into a quaternary precipitate and a quaternary supernatant meeting the discharge standard, and the outlet of the quaternary supernatant is connected with the buffer pool (7);
the solid waste treatment tank (6) is used for receiving and storing primary precipitation, secondary precipitation, tertiary precipitation and quaternary precipitation;
the buffer pool (7) is used for receiving and storing the four-level supernatant, a first outlet of the buffer pool (7) is connected with an external discharge environment, and a second outlet of the buffer pool (7) is connected with the secondary sedimentation pool.
2. The integrated medical wastewater treatment system according to claim 1, wherein the industrial control system is connected with a stirring mechanism, the stirring mechanism comprises a first stirrer (11) installed on the primary sedimentation tank (1) and a second stirrer (41) installed on the chemical treatment area (4), the first stirrer (11) is used for stirring the solid waste deposited at the bottom of the primary sedimentation tank (1), and the second stirrer (41) is used for uniformly mixing the chemical agent in the chemical treatment area (4) with the tertiary supernatant.
3. An integrated medical wastewater treatment system according to claim 2, characterized in that a feedback mechanism is further connected to the industrial control system, the feedback mechanism comprising a first sensor (12), a second sensor (21), a third sensor (22), a fourth sensor (38) and a fifth sensor (35);
the first sensor (12) is arranged at the bottom of the inner side wall of the primary sedimentation tank (1), and the first sensor (12) is used for detecting the information of the sedimentation amount of the primary sedimentation and feeding back the information to the industrial control system;
the second sensor (21) is arranged at the top of the inner side wall of the secondary sedimentation tank (2) and is used for detecting the liquid level information of the secondary supernatant and feeding the liquid level information of the secondary supernatant back to the industrial control system;
the third sensor (22) is arranged at the bottom of the inner side wall of the secondary sedimentation tank (2) and is used for detecting the sedimentation amount information of the secondary sedimentation and feeding the information back to the industrial control system;
the fourth sensor (38) is arranged at the top of the inner side wall of the membrane treatment area (3) and is used for detecting the liquid level information of the tertiary supernatant and feeding the information back to the industrial control system;
and the fifth sensor (35) is arranged at the bottom of the inner side wall of the membrane treatment area (3) and is used for detecting the deposition amount information of the three-stage deposition and feeding the information back to the industrial control system.
4. The integrated medical wastewater treatment system according to claim 3, wherein the industrial control system is further connected with a power mechanism and a control mechanism, and the power mechanism comprises a fluid delivery pump set arranged at material inlets and material outlets of the primary sedimentation tank (1), the secondary sedimentation tank (2), the membrane treatment area (3), the chemical treatment area (4), the solid wastewater treatment tank (6) and the buffer tank (7); the control mechanism comprises a control valve group which is arranged at a material inlet and a material outlet of a primary sedimentation tank (1), a secondary sedimentation tank (2), a membrane treatment area (3), a chemical treatment area (4), a solid waste treatment tank (6) and a buffer tank (7).
5. The integrated medical wastewater treatment system according to claim 1, wherein the outlet of the secondary supernatant is connected with the bottom of the membrane reaction zone (3), the inlet of the secondary supernatant of the membrane reaction zone (3) is positioned below the air shower (34), the membrane reaction zone (3) is provided with a return line, the return line is used for conveying the intermediate layer of the tertiary supernatant back to the secondary sedimentation tank (2), the return line is provided with a second one-way valve (37), and the interface of the return line is positioned between the aerobic biofilm carrier (31) and the air shower (34).
6. An integrated medical wastewater treatment system according to claim 5, wherein a filter screen (33) is further arranged in the membrane reaction zone (3), and the filter screen (33) is positioned between the return line interface and the air shower (34).
7. An integrated medical wastewater treatment system according to claim 1, wherein the chemical treatment zone (4) is connected with a disinfectant storage chamber (5), and the interface of the disinfectant storage chamber (5) and the chemical treatment zone (4) is positioned above the stirring paddle of the second stirrer (41).
8. The integrated medical wastewater treatment system according to claim 1, wherein the industrial control system is further connected with an air compression system (8), and the air compression system (8) comprises a first back-blowing gas pipe (81), a second back-blowing gas pipe (82) and a third back-blowing gas pipe (83) which are respectively connected with the solid wastewater outlet pipelines of the membrane reaction zone (3), the secondary sedimentation tank (2) and the primary sedimentation tank (1).
9. An integrated medical wastewater treatment system according to claim 1, wherein a disinfection chamber (44) is installed between the chemical treatment zone (4) and the buffer tank (7), and the disinfection chamber (44) is used for ultraviolet irradiation disinfection of the four-stage supernatant.
10. The integrated medical wastewater treatment system according to claim 1, wherein the aerobic biofilm carriers (31) comprise a perforated carrier plate (311), and the biofilm (312) for cultivating aerobic bacteria is laid on both sides of the perforated carrier plate (311).
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