CN111470730A - Medical sewage purification and disinfection device - Google Patents
Medical sewage purification and disinfection device Download PDFInfo
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- CN111470730A CN111470730A CN202010333312.XA CN202010333312A CN111470730A CN 111470730 A CN111470730 A CN 111470730A CN 202010333312 A CN202010333312 A CN 202010333312A CN 111470730 A CN111470730 A CN 111470730A
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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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
- C02F1/50—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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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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Abstract
The invention relates to the technical field of sewage treatment, in particular to a medical sewage purification and disinfection device. The medical sewage purification and disinfection device provided by the invention comprises an anaerobic treatment mechanism, an aerobic treatment mechanism, a ceramic flat membrane filtration mechanism, a disinfection mechanism and a backwashing mechanism; compared with the prior art, the medical sewage purification and disinfection device has the advantages that the membrane produced water replaces a sedimentation tank, the occupied area is smaller, the biological filler is combined with the membrane process double membranes, the sludge concentration is high, the impact resistance of the system is improved, the treatment efficiency is ensured, the addition cost of disinfectant is reduced through the filtration and separation of the ceramic flat membrane, the sludge age of the system is long, the sludge concentration is high, the sludge yield is low, the service life of the inorganic ceramic membrane is long, and the secondary pollution caused by the sludge, the membrane material and the like is small; based on the inoxidizability of the inorganic ceramic membrane, the effluent containing the disinfection oxidant in the disinfection tank is directly used for back washing, so that membrane pollution can be effectively inhibited.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a medical sewage purification and disinfection device.
Background
In recent years, with the rapid development of the medical and health industry in China, the scale and the number of hospitals are continuously enlarged, and the discharge amount of medical sewage is also continuously increased. Compared with the common domestic sewage, the medical sewage contains not only CODcr, BOD5 and SS contained in the domestic sewage, but also a large amount of bacteria, viruses, parasites, heavy metals and other substances which are toxic and harmful to human bodies, and has the characteristics of space pollution, acute infection, latent infection and the like.
The mode that adopts biochemical filtration and sedimentation tank to combine often handles medical sewage among the prior art, but sedimentation tank's occupation of land space is big, and it is poor to the organic matter cleaning effect in the sewage, consequently often adopt organic membrane to filter waste water, organic membrane bioreactor combines biological treatment unit and membrane separation unit, utilize the microfiltration membrane subassembly to replace traditional two heavy ponds, can realize the effective separation of solid and liquid like this, prevent the mud inflation, the unstable condition of quality of water, but organic membrane exists easily dirty stifled, easily disconnected silk, chemical stability is poor, the short-lived scheduling problem, and organic membrane oxidation resistance is weak, can't directly carry out conventional back flush with disinfection play water and control the membrane pollution.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: at present, the mode of combining biochemical filtration with a sedimentation tank is commonly adopted for medical sewage treatment, the sedimentation tank occupies a large area, and the cleaning effect on organic matters in sewage is poor; the organic membrane for treating medical sewage has the problems of easy pollution and blockage, easy wire breakage, poor chemical stability, short service life and the like.
(II) technical scheme
In order to solve the above technical problems, an embodiment of the present invention provides a medical sewage purification and disinfection apparatus, including an anaerobic treatment mechanism, an aerobic treatment mechanism, a ceramic flat membrane filtration mechanism, a disinfection mechanism, and a backwashing mechanism; the anaerobic treatment mechanism comprises an anaerobic tank and an anaerobic tank biological filler, and the anaerobic tank biological filler is fixedly suspended in the anaerobic tank; the aerobic treatment mechanism comprises an aerobic tank and aerobic tank biological filler, and the aerobic tank biological filler is suspended in the aerobic tank; the ceramic flat membrane filtering mechanism comprises a membrane pool and a ceramic flat membrane component, and the ceramic flat membrane component is arranged in the membrane pool; the disinfection mechanism comprises a disinfection tank and a dosing device, and a medicine outlet of the dosing device is arranged in the disinfection tank; the backwashing mechanism comprises a backwashing pipeline and a backwashing pump, one end of the backwashing pipeline is communicated with a water producing port of the ceramic flat membrane component, the other end of the backwashing pipeline is communicated with the disinfection tank, and the backwashing pump is arranged on the backwashing pipeline; the anaerobic tank, the aerobic tank and the membrane tank are communicated in sequence, and a water production port of the ceramic flat membrane component is communicated with the disinfection tank through a water production pipe.
According to one embodiment of the invention, the medical sewage purification and disinfection device further comprises a sludge tank, a sludge pump is arranged in the membrane tank, the sludge pump is communicated with the anaerobic tank through a sludge return pipe, the sludge pump is communicated with the sludge tank through a sludge discharge pipe, and a sludge discharge valve is arranged on the sludge discharge pipe.
According to one embodiment of the invention, the medical sewage purification and disinfection device further comprises a fan, and the fan is communicated with the aerobic tank and the membrane tank.
According to one embodiment of the invention, an aeration mechanism is arranged in the aerobic tank.
According to one embodiment of the invention, the aeration mechanism is an aerator arranged in the aerobic tank.
According to one embodiment of the invention, a stirring mechanism is arranged in the anaerobic pool.
According to one embodiment of the invention, a suction pump is arranged on the water production pipe.
According to one embodiment of the invention, at least one partition board is arranged in the disinfection tank, the partition board divides the disinfection tank into a plurality of disinfection chambers, and the plurality of disinfection chambers are sequentially communicated up and down alternately; the tail end of the disinfection tank is provided with a water outlet.
According to one embodiment of the invention, the medical sewage purification and disinfection device further comprises a water inlet pipe, wherein the water inlet pipe is communicated with the anaerobic tank;
the anaerobic tank is communicated with the aerobic tank through a first channel, the aerobic tank is communicated with the membrane tank through a second channel, the water inlet pipe is arranged opposite to the first channel, and the first channel is arranged opposite to the second channel.
According to one embodiment of the invention, the medical sewage purification and disinfection device further comprises a housing, and the anaerobic tank, the aerobic tank, the membrane tank and the disinfection tank are all integrated in the housing.
The invention has the beneficial effects that: the device provided by the embodiment of the invention comprises an anaerobic treatment mechanism, an aerobic treatment mechanism, a ceramic flat membrane filtering mechanism, a disinfection mechanism and a back washing mechanism; the medical sewage is firstly put into an anaerobic treatment mechanism, and organic matters in the sewage are degraded into micromolecular organic matters and inorganic matters through anaerobic reaction, so that the biodegradability of the wastewater is improved, partial COD is removed, and partial organic nitrogen is aminated into ammonia nitrogen; after passing through the anaerobic treatment mechanism, the medical sewage enters the aerobic treatment mechanism to carry out COD aerobic decomposition and ammonia nitrogen nitration, and the degradable organic matters are decomposed into water and carbon dioxide or synthesized microorganism cell substances; then the sewage enters a membrane pool in a ceramic flat membrane filtering mechanism, the produced water is sucked and filtered through a ceramic flat membrane assembly in the membrane pool, bacteria, inorganic impurities and the like are remained in the pool, the filtered clear water enters a disinfection pool, and a disinfectant is put into the disinfection pool through a dosing device so as to disinfect the sewage; meanwhile, the backwashing mechanism in the disinfection tank is communicated with the ceramic flat membrane component, and the ceramic flat membrane component is an inorganic membrane, so that the oxidation resistance is high, the stored water containing disinfectant in the disinfection tank can be used as a water source for backwashing, the waste of resources caused by cleaning the ceramic flat membrane component by using extra clear water can be avoided, and the stored water containing the disinfectant can kill organic pollutants such as viruses and bacteria remained in the ceramic flat membrane component, so that the membrane pollution is effectively inhibited, the membrane maintainability cleaning frequency is greatly reduced, and the backwashing effect and the pollution resistance of the ceramic membrane are improved.
Compared with the prior art, the invention has the advantages of smaller occupied area by replacing a sedimentation tank with membrane produced water, high sludge concentration by combining biological filler and a membrane process double membrane, thereby improving the impact resistance of the system and ensuring the treatment efficiency, and reducing the addition cost of disinfectant through the filtration and separation of a ceramic flat membrane, and the system has long sludge age, high sludge concentration, low sludge yield and long service life of an inorganic ceramic membrane, so that the secondary pollution caused by sludge, membrane materials and the like is small.
Drawings
The advantages of the above and/or additional aspects of the present invention will become apparent and readily appreciated from the following description of the embodiments taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of a medical sewage purifying and disinfecting apparatus according to an embodiment of the present invention.
Wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is as follows:
1. an anaerobic tank 11, anaerobic tank biological fillers 12, a stirring mechanism 13, a water inlet pipe 14 and a first channel;
2. an aerobic tank 21, an aerobic tank biological filler 22, a second channel 23 and an aeration disc;
3. a membrane pool 31, a ceramic flat membrane module 32, a sludge pump 321, a return pipe 322, a sludge discharge pipe 3221 and a sludge discharge valve;
4. a sludge tank 41 and a sludge perforated pipe;
5. the disinfection device comprises a disinfection pool 51, a first disinfection cavity 52, a second disinfection cavity 53, a connecting channel 54, a partition plate 55 and a water outlet;
6. dosing equipment;
7. a backwash pipeline 71, a backwash pump;
8. a water production pipe 81 and a suction pump;
9. blower fan, 91.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
As shown in fig. 1, an embodiment of the present invention provides a medical sewage purification and disinfection apparatus, which includes an anaerobic treatment mechanism, an aerobic treatment mechanism, a ceramic flat membrane filtration mechanism, a disinfection mechanism, and a backwashing mechanism; the anaerobic treatment mechanism comprises an anaerobic tank 1 and an anaerobic tank biological filler 11, wherein the anaerobic tank biological filler 11 is fixedly suspended in the anaerobic tank 1; the aerobic treatment mechanism comprises an aerobic tank 2 and an aerobic tank biological filler 21, and the aerobic tank biological filler 21 is suspended in the aerobic tank 2; the ceramic flat membrane filtering mechanism comprises a membrane pool 3 and a ceramic flat membrane component 31, wherein the ceramic flat membrane component 31 is arranged in the membrane pool 3; the disinfection mechanism comprises a disinfection tank 5 and a dosing device 6, and a medicine outlet of the dosing device 6 is arranged in the disinfection tank 5; the back washing mechanism comprises a back washing pipeline 7 and a back washing pump 71, one end of the back washing pipeline 7 is communicated with a water producing port of the ceramic flat membrane component 31, the other end of the back washing pipeline is communicated with the disinfection tank 5, and the back washing pump 71 is arranged on the back washing pipeline 7; the anaerobic tank 1, the aerobic tank 2 and the membrane tank 3 are communicated in sequence, and a water producing port of the ceramic flat plate membrane component 31 is communicated with the disinfection tank 5 through a water producing pipe 8.
When the medical sewage disinfection device is used, medical sewage is pretreated firstly, the pretreatment comprises a sewage primary treatment structure such as a grid, and large particles in the sewage are filtered firstly; then the medical sewage enters the anaerobic tank 1, organic matters in the medical sewage are subjected to anaerobic reaction in an anaerobic environment, and the organic matters in the sewage are subjected to micro-biological degradation to obtain micro-molecular organic matters and inorganic matters, so that the biodegradability of the wastewater is improved, partial COD is removed, and partial organic nitrogen is aminated to form ammonia nitrogen; after passing through the anaerobic treatment mechanism, the medical sewage enters the aerobic treatment mechanism to carry out COD aerobic decomposition and ammonia nitrogen nitration, and organic matters are decomposed into water and carbon dioxide or synthetic microorganism cell substances; then sewage enters a membrane tank 3 in the ceramic flat membrane filtering mechanism, produced water is sucked and filtered through a ceramic flat membrane component 31 in the membrane tank 3, filtered clean water enters a disinfection tank 5, and a disinfectant is put into the disinfection tank 5 through a dosing device 6 so as to disinfect the sewage; meanwhile, the backwashing mechanism in the disinfection tank 5 is communicated with the ceramic flat membrane component 31, because the ceramic flat membrane component 31 is an inorganic ceramic membrane, the inoxidizability is strong, the stored water containing disinfectant in the disinfection tank 5 can be utilized as a water source for backwashing, the waste of resources caused by cleaning the ceramic flat membrane component 31 by using extra clear water can be avoided, the stored water containing disinfectant can also kill organic pollutants such as viruses and bacteria remained in the ceramic flat membrane component 31, the membrane pollution is effectively controlled, the maintainability cleaning frequency is greatly reduced, the operation cost is saved, and the backwashing effect and the pollution resistance of the ceramic flat membrane component 31 are provided.
Compared with the prior art, the invention has the advantages of smaller occupied area by replacing a sedimentation tank with membrane produced water, high sludge concentration by combining biological filler and a membrane process double membrane, thereby improving the impact resistance of the system and ensuring the treatment efficiency, and reducing the addition cost of disinfectant through the filtration and separation of a ceramic flat membrane, and the system has long sludge age, high sludge concentration, low sludge yield and long service life of an inorganic ceramic membrane, so that the secondary pollution caused by sludge, membrane materials and the like is small.
According to an embodiment of the present invention, as shown in fig. 1, the medical sewage purification and disinfection apparatus further comprises a sludge tank 4, a sludge pump 32 is disposed in the membrane tank 3, the sludge pump 32 is communicated with the anaerobic tank 1 through a sludge return pipe 321, the sludge pump 32 is communicated with the sludge tank 4 through a sludge discharge pipe 322, and a sludge discharge valve 3221 is disposed on the sludge discharge pipe 322, wherein in this embodiment, the anaerobic tank 1, the aerobic tank 2 and the membrane tank 3 are communicated, so that the sludge in the anaerobic tank 1 and the aerobic tank 2 flows to the membrane tank 3 along with the flow of the sewage, if the apparatus is continuously operated, the sludge content in the anaerobic tank 1 and the aerobic tank 2 is insufficient, while the sludge in the membrane tank 3 is continuously returned to the anaerobic tank 1 through the sludge pump 32, the high sludge concentration in the system under the condition that the apparatus is continuously operated can be maintained, thereby improving the impact resistance of the system, ensuring the treatment efficiency of the system, further ensuring that the entire apparatus is continuously operated, further, the sludge in the membrane tank 3 can be periodically returned to the sludge tank through the aeration membrane tank 11, the aeration membrane tank 4, the aeration membrane tank 41, the aeration system can be periodically controlled, the sludge concentration of sludge can be increased, the sludge in the aeration membrane tank, the aeration system can be controlled, the sludge concentration of the aeration system can be increased, the sludge in the aeration system, the aeration system can be controlled, the sludge tank can be prevented from being increased, the sludge in the aeration system, the aeration system can be controlled by periodically opening 354, the aeration system can be controlled by periodically opening the aeration system, the aeration system can.
According to an embodiment of the invention, an aeration mechanism is arranged in the aerobic tank 2, and gas is introduced into the aerobic tank 2 through the aeration mechanism to increase dissolved oxygen in the aerobic tank 2, so that an oxygen-rich environment is formed in the aerobic tank 2, thereby providing an environment for aerobic decomposition of COD and nitration reaction of ammonia nitrogen in sewage in the aerobic tank 2; optionally, in this embodiment, the aeration mechanism includes an aeration disc 23 and a blower 9, the blower 9 is communicated with the aeration disc 23, the aeration disc 23 is a microporous aeration disc, and the airflow generated by the blower 9 passes through the microporous aeration disc 23 to introduce a large amount of bubbles into the aerobic tank 2, so as to increase the dissolved oxygen in the aerobic tank 2. Alternatively, in this embodiment, the aeration mechanism may also be another component, such as an aeration pipe, and the blower 9 may also be an aeration pump, and the like, and the purpose of increasing the dissolved oxygen in the aerobic tank 2 can also be achieved.
According to an embodiment of the present invention, the ceramic flat membrane module 31 in the membrane tank 3 is also communicated with an aeration device, the aeration device is used for improving the filtering effect of the ceramic flat membrane module 31, and simultaneously the aeration purging and the back washing are used for controlling membrane pollution, wherein the ceramic flat membrane module 31 is a component composed of a plurality of ceramic flat membranes and a stainless steel frame, the surface of each ceramic flat membrane is coated with a nano layer, optionally, a fan 9 is communicated with the ceramic flat membrane module 31, air is purged into the ceramic flat membrane module 31 through the fan 9 so as to avoid the problem of blockage and even membrane pollution in the ceramic flat membrane module 31, the aeration purging of the ceramic flat membrane module 31 is continuous, and the purging strength is 3-5L per membrane per minute.
Preferably, as shown in fig. 1, the blower 9 in the above embodiment is respectively communicated with the microporous aeration disc 23 in the aerobic tank 2, the ceramic flat membrane module 31 in the membrane tank 3 and the sludge tank 4, that is, the microporous aeration disc 23 in the aerobic tank 2, the ceramic flat membrane module 31 in the membrane tank 3 and the sludge tank 4 share one blower 9, so that the equipment cost can be saved, and meanwhile, the occupied space of the whole device is smaller, and the integration is better.
According to an embodiment of the present invention, as shown in fig. 1, a stirring mechanism 12 is disposed in the anaerobic tank 1, optionally, a space is provided at a lower end of the anaerobic tank biological filler 11 for installing the stirring mechanism 12, the stirring mechanism 12 is disposed at the lower end of the anaerobic tank biological filler 11, and the stirring mechanism 12 can allow the medical wastewater to sufficiently contact with the anaerobic tank biological filler 11 and the sludge in the anaerobic tank 1, so as to improve efficiency and degree of degradation and reaction of organic matters in the anaerobic tank 1. Wherein, the stirring mechanism 12 can adopt mechanical stirring or perforated pipe air stirring,
as shown in fig. 1, a suction pump 81 is arranged on the water production pipe 8, a water production port of the ceramic flat membrane module 31 is communicated with a water collection pipe, the water collection pipe is communicated with the water production pipe 8, the suction pump 81 produces water through the water production pipe 8 and conveys the water to the disinfection tank 5; the medicine adding equipment 6 can add a disinfectant into the disinfection tank 5 so as to kill viruses and bacteria in the sewage; meanwhile, the sewage in the disinfection tank 5 can also be used for cleaning the ceramic flat membrane component 31 through a back washing mechanism; the ceramic flat membrane module 31 is periodic in filtration, suction and back flushing, and the operation mode is that the back flushing pump 7 is started for 0.5-1min after the suction pump 81 is started for 6-9min, and the suction pump 81 is started after back flushing. In particular, the flow rate of the backwash pump 7 is 2 times that of the suction pump 81
According to one embodiment of the invention, at least one partition plate 54 is arranged in the disinfection tank, the partition plate 54 divides the disinfection tank 5 into a plurality of disinfection chambers, and the disinfection chambers are sequentially communicated with each other in an up-down alternating manner; the tail end of the disinfection tank 5 is provided with a water outlet 55; the upper and lower alternate communication of a plurality of disinfection chambers can increase the stay time of sewage in the disinfection tank, and the short flow phenomenon is avoided. Preferably, as shown in fig. 1, a partition plate 54 is arranged in the disinfection tank 5, the partition plate 54 divides the disinfection tank 5 into a first disinfection chamber 51 and a second disinfection chamber 52, a connecting channel 53 is formed between the partition plate 54 and the bottom of the disinfection tank 5, and the first disinfection chamber 51 and the second disinfection chamber 52 are communicated through the connecting channel 53; a water outlet 55 is arranged at the upper end of the disinfection tank 5; the sewage from the ceramic flat membrane module 31 firstly enters the first disinfection chamber 51, then flows downwards and enters the second disinfection chamber 52 from the connecting channel 53 at the lower end, the water outlet 55 is arranged at the upper end of the disinfection tank 5 and is communicated with the second disinfection chamber 52, the disinfectant fully contacts with the sewage in the first disinfection chamber 51 and the second disinfection chamber 52 for sterilization and disinfection, and then the sewage is discharged through the water outlet 55 communicated with the second disinfection chamber 52; the partition plate 54 is arranged in the disinfection tank 5, so that the retention time of sewage in the disinfection tank 5 can be prolonged, and the phenomenon that the sewage enters the disinfection tank 5 and is discharged from the water outlet 55 without being fully contacted with a disinfectant, namely the phenomenon of short flow is avoided. It should be noted that, in this embodiment, the disinfection chamber may be provided with three, four, five, etc., and the water outlet 55 is provided at the end of the disinfection tank, and it may be communicated with the upper end of the disinfection tank 5, or the lower end 5 of the disinfection tank, so as to achieve the purpose of the present application. ,
according to an embodiment of the present invention, as shown in fig. 1, the medical sewage purification and disinfection apparatus further comprises a water inlet pipe 13, wherein the water inlet pipe 13 is communicated with the anaerobic tank 1; the anaerobic tank 1 is communicated with the aerobic tank 2 through a first channel 14, the aerobic tank 2 is communicated with the membrane tank 3 through a second channel 22, the water inlet pipe 13 is arranged opposite to the first channel 14, and the first channel 14 is arranged opposite to the second channel 22. Preferably, as shown in fig. 1, the water inlet pipe 13 is connected to the upper end of the anaerobic tank 1, the first channel 14 is located at the lower end and is communicated with the anaerobic tank 1 and the aerobic tank 2, and the second channel 22 is located at the upper end and is communicated with the aerobic tank 2 and the membrane tank 3, so that the retention time of sewage in the anaerobic tank 1 and the aerobic tank 2 can be increased, organic matters in the sewage can be in full contact reaction with the anaerobic tank biological filler 11 in the anaerobic tank 1 and the aerobic tank biological filler 21 in the aerobic tank 2, and the short-flow phenomenon can be prevented.
Alternatively, in this embodiment, the water inlet pipe 13 may be communicated with the lower end of the anaerobic tank 1, and the first channel 14 is located at the upper end opposite to the upper end to communicate the anaerobic tank 1 and the aerobic tank 2, and the second channel 22 is located at the lower end to communicate the aerobic tank 2 and the membrane tank 3, which also can achieve the purpose of preventing short flow in this application, and the purpose of the invention is not departing from the design concept of the invention, and shall fall within the protection scope of the invention.
According to an embodiment of the present invention, as shown in fig. 1, the medical sewage purification and disinfection apparatus further comprises a housing, wherein the anaerobic tank 1, the aerobic tank 2, the membrane tank 3 and the disinfection tank 5 are integrated in the housing; the integration level of whole device is higher like this, and area is littleer, is convenient for install, place and transport.
Wherein in the present application, the anaerobic tank 1, the aerobic tank 2, the membrane tank 3, the sludge tank 4 and the disinfection tank 5 are all separated in a shell, namely, a partition is arranged in the shell to divide the space in the shell into various spaces.
According to one embodiment of the invention, the medical sewage purification and disinfection device further comprises an electric control unit, wherein the electric control unit comprises an electric control cabinet which is arranged in the equipment room, and meanwhile, the suction pump 81, the backwashing pump 7, the blower 9 and the dosing equipment 6 are also arranged in the equipment room; the electric control unit is used for controlling the suction pump 81, the backwashing pump 7, the blower 9 and the dosing device 6.
The working principle of the medical sewage purification and disinfection device provided by the invention is specifically described with reference to fig. 1;
the medical sewage is pretreated to filter large-volume solid substances, and then enters an anaerobic tank 1 through a water inlet pipe 13, the water inlet pipe 13 is positioned at the upper part of the anaerobic tank 1, an anaerobic tank biological filler 11 is fixedly suspended in the anaerobic tank 1, the lower end of the filler is at a certain distance from the bottom of the tank for installing a stirring mechanism 12, and organic substances in the sewage are degraded into micromolecular organic substances and inorganic substances through microorganisms in the anaerobic tank 1 through anaerobic reaction, so that the biodegradability of the wastewater is improved, partial COD is removed, and partial organic nitrogen is aminated into ammonia nitrogen;
in sewage in the anaerobism pond 1 enters into good oxygen pond 2 through first passageway 14, is equipped with the micropore aeration dish in the good oxygen pond 2 simultaneously, and the micropore aeration dish is installed in good oxygen pond 2 bottoms, and fan 9 and micropore aeration dish intercommunication blow in the little bubble to good oxygen pond 2 and increase the dissolved oxygen in the good oxygen pond 2, and sewage carries out the aerobic decomposition of COD and the nitration of ammonia nitrogen in good oxygen pond 2.
Sewage in the aerobic tank 2 flows into the membrane tank 3 through the second channel 22, sludge and solids in the sewage are filtered outside the ceramic flat membrane assembly 31, produced water is pumped and filtered through the suction pump 81 and enters the first disinfection cavity 51 in the disinfection tank 5 through the water production pipe 8, and meanwhile, the disinfectant is put into the disinfection tank 5 through the medicine adding equipment 6 and fully contacts with the sewage to kill viruses and bacteria in the sewage; the contaminated water then enters the second sterilization chamber 52 through the connection passage 53 and is then discharged through the water outlet 55 communicating with the second sterilization chamber 52. In the application, the chemical adding equipment 6 is an automatic sodium hypochlorite generator which generates sodium hypochlorite by adopting a mode of electrolyzing saline solution, the raw materials are simple, meanwhile, a chemical adding system can be directly adopted to add the sodium hypochlorite to a place where a finished sodium hypochlorite product is easy to purchase, the chemical adding equipment 6 works periodically, the control of the chemical adding equipment is the same as that of the suction pump 81, and the adding amount of the sodium hypochlorite is automatically adjusted according to the requirement of the residual chlorine in the effluent; of course, other configured finished disinfectants, such as chlorine disinfectants, ozone disinfectants and the like, can be adopted in the embodiment, and the agents are automatically dosed according to the quality of the membrane effluent.
Meanwhile, in the operation process of the equipment, the sludge pump 32 returns the sludge in the membrane tank 3 to the anaerobic tank 1, and the sludge reflux ratio is 50-150%; the sludge discharge valve 3221 is periodically opened to periodically discharge the sludge in the membrane tank 3 into the sludge tank 4 through the sludge pump 32, the fan 9 periodically stirs the sludge in the sludge tank 4 through the sludge perforated pipe 41, the upper part of the sludge tank 4 is provided with an overflow port, and supernatant is overflowed to the sewage adjusting tank; the back washing pipeline 7 is communicated with a water collecting pipe of the ceramic flat membrane component 31, and the back washing pump 71 sends the sewage in the disinfection tank 5 into the ceramic flat membrane component 31 through the back washing pipeline 7 for back washing. The ceramic flat membrane module 31 is periodic in pumping and backflushing, and the operation mode is that after the pumping pump 81 is started for 6-9min, the backflushing pump 71 is started for 0.5-1min, and after backflushing, the pumping pump 81 is started. Alternatively, the flow rate of the backwash pump 71 is 2 times that of the suction pump 81.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases by those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a medical sewage purification degassing unit which characterized in that: comprises an anaerobic treatment mechanism, an aerobic treatment mechanism, a ceramic flat membrane filtering mechanism, a disinfection mechanism and a back washing mechanism;
the anaerobic treatment mechanism comprises an anaerobic tank and an anaerobic tank biological filler, and the anaerobic tank biological filler is suspended in the anaerobic tank;
the aerobic treatment mechanism comprises an aerobic tank and aerobic tank biological filler, and the aerobic tank biological filler is suspended in the aerobic tank;
the ceramic flat membrane filtering mechanism comprises a membrane pool and a ceramic flat membrane component, and the ceramic flat membrane component is arranged in the membrane pool;
the disinfection mechanism comprises a disinfection tank and a dosing device, and a medicine outlet of the dosing device is arranged in the disinfection tank;
the backwashing mechanism comprises a backwashing pipeline and a backwashing pump, one end of the backwashing pipeline is communicated with a water producing port of the ceramic flat membrane component, the other end of the backwashing pipeline is communicated with the disinfection tank, and the backwashing pump is arranged on the backwashing pipeline;
the anaerobic tank, the aerobic tank and the membrane tank are communicated in sequence, and a water production port of the ceramic flat membrane component is communicated with the disinfection tank through a water production pipe.
2. The medical sewage purification and disinfection apparatus according to claim 1, wherein: the medical sewage purification and disinfection device further comprises a sludge tank, a sludge pump is arranged in the membrane tank, the sludge pump is communicated with the anaerobic tank through a sludge return pipe, the sludge pump is communicated with the sludge tank through a sludge discharge pipe, and a sludge discharge valve is arranged on the sludge discharge pipe.
3. The medical sewage purification and disinfection apparatus according to claim 1, wherein: the medical sewage purification and disinfection device further comprises a fan, and the fan is communicated with the aerobic tank and the membrane tank.
4. The medical sewage purification and disinfection apparatus according to claim 1, wherein: an aeration mechanism is arranged in the aerobic tank.
5. The medical sewage purification and disinfection apparatus according to claim 4, wherein: the aeration mechanism is an aerator arranged in the aerobic tank.
6. The medical sewage purification and disinfection apparatus according to claim 1, wherein: and a stirring mechanism is arranged in the anaerobic tank.
7. The medical sewage purification and disinfection apparatus according to claim 1, wherein: and a suction pump is arranged on the water production pipe.
8. The medical sewage purification and disinfection apparatus according to claim 1, wherein: at least one partition board is arranged in the disinfection tank, the disinfection tank is divided into a plurality of disinfection chambers by the partition board, and the disinfection chambers are sequentially and alternately communicated up and down; the tail end of the disinfection tank is provided with a water outlet.
9. The medical sewage purification and disinfection apparatus according to claim 1, wherein: the medical sewage purification and disinfection device also comprises a water inlet pipe, and the water inlet pipe is communicated with the anaerobic tank;
the anaerobic tank is communicated with the aerobic tank through a first channel, the aerobic tank is communicated with the membrane tank through a second channel, the water inlet pipe and the first channel are arranged oppositely from top to bottom, and the first channel and the second channel are arranged oppositely.
10. The medical sewage purification and disinfection apparatus according to claim 1, wherein: the medical sewage purification and disinfection device further comprises a shell, wherein the anaerobic tank, the aerobic tank, the membrane tank and the disinfection tank are all integrated in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333312.XA CN111470730A (en) | 2020-04-24 | 2020-04-24 | Medical sewage purification and disinfection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333312.XA CN111470730A (en) | 2020-04-24 | 2020-04-24 | Medical sewage purification and disinfection device |
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| CN111470730A true CN111470730A (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010333312.XA Pending CN111470730A (en) | 2020-04-24 | 2020-04-24 | Medical sewage purification and disinfection device |
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| CN (1) | CN111470730A (en) |
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| CN112125481A (en) * | 2020-09-29 | 2020-12-25 | 中建水务环保有限公司 | Multistage ceramic membrane rural sewage treatment plant |
| CN113233703A (en) * | 2021-05-17 | 2021-08-10 | 北京水研环境科技股份有限公司 | MBR membrane group energy-saving purification process |
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Application publication date: 20200731 |