CN210313770U - Surgical instrument and surgical linen cleaning wastewater treatment system - Google Patents
Surgical instrument and surgical linen cleaning wastewater treatment system Download PDFInfo
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- CN210313770U CN210313770U CN201921079915.0U CN201921079915U CN210313770U CN 210313770 U CN210313770 U CN 210313770U CN 201921079915 U CN201921079915 U CN 201921079915U CN 210313770 U CN210313770 U CN 210313770U
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- 238000004140 cleaning Methods 0.000 title claims abstract description 67
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 25
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- 239000012528 membrane Substances 0.000 claims abstract description 188
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- 239000010865 sewage Substances 0.000 claims abstract description 119
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 80
- 239000002351 wastewater Substances 0.000 claims abstract description 39
- 239000000126 substance Substances 0.000 claims abstract description 25
- 238000011001 backwashing Methods 0.000 claims abstract description 19
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- 239000008213 purified water Substances 0.000 claims description 34
- 239000012535 impurity Substances 0.000 claims description 24
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Abstract
The utility model relates to a surgical instruments and operation linen washs wastewater treatment system is applicable to the waste water of hospital's surgical instruments and operation linen washing wastewater treatment, laundry trade and handles and the retrieval and utilization. Comprises a fluff filter, a sewage tank, a supply pump, a ceramic membrane filter, a backflushing tank, a circulating pump, a pure water tank, a chemical cleaning tank, pure water, a pure water quality meter, a high-pressure pump, a sewage collecting tank and a delivery pump; a fluff filter is arranged above the sewage tank, a replenishing pump is arranged beside the sewage tank, a water inlet of the replenishing pump is connected with the sewage tank through a pipeline, a water outlet of the replenishing pump is connected with a first bag type filter through a pipeline, a water outlet of a circulating pump is connected with a water inlet of a ceramic membrane filter through a pipeline, and the ceramic membrane filter is connected with a back washing device; the water outlet of the high-pressure pump is connected with a reverse osmosis filter, and a high-pressure sensor is arranged on a pipeline before the high-pressure pump enters the reverse osmosis filter; the pure water outlet of the reverse osmosis filter is directly connected to the pure water tank through a pipeline and a control valve.
Description
Technical Field
The utility model relates to a surgical instruments and operation linen washs wastewater treatment system is applicable to the waste water of hospital's surgical instruments and operation linen washing wastewater treatment, laundry trade and handles and the retrieval and utilization.
Background
With the development of economy in China and the increasing improvement of the living standard of people, the washing machine is widely applied to large-scale laundries or laundry companies which are specially used for individuals, hotels, enterprises and the like to provide clothes and household article washing services. These companies have a large laundry volume and discharge a large amount of water and wastewater. The laundry wastewater contains a large amount of surfactants, the surfactants not only decompose dissolved oxygen in water to be consumed, but also contain rich nutrients, and the surfactants are discharged directly without treatment to destroy the aquatic ecological environment, particularly influence the growth and reproduction of aquatic animals and plants. In addition, in the face of shortage of urban water resources and establishment of a water-saving society, the treatment and recycling of wastewater in the laundry industry are very necessary.
At present, the hospital surgical instruments and the surgical linen cleaning wastewater treatment lack special wastewater treatment equipment. The hospital waste water contains a large amount of pathogenic microorganisms, parasitic ova and various viruses, such as ascarid ova, hepatitis viruses, tubercle bacillus, dysentery bacteria and the like, and the waste water is directly discharged into a water body without being treated, so that serious pollution is caused to surrounding water areas, soil and the like, and meanwhile, the waste water also brings harm to drinking water of downstream residents and harms the daily life of people.
Disclosure of Invention
The utility model aims at providing a surgical instruments and operation linen washs waste water processing system to above-mentioned weak point, will surgical instruments and operation linen wash waste water and handle into the water purification.
The surgical instrument and surgical linen cleaning wastewater treatment system is realized by adopting the following technical scheme:
the surgical instrument and the surgical linen cleaning and processing system comprises a fluff filter, a sewage tank, a replenishing pump, a ceramic membrane filter, a backflushing tank, a circulating pump, a pure water tank, a chemical cleaning tank, a pure water quality meter, a reverse osmosis filter (RO filtering membrane), a pure water flow meter, an intermediate water tank, a sewage discharge pump, a pure water quality meter, a high-pressure pump, a sewage collecting tank and a delivery pump.
The lower part of the sewage tank is provided with a down filter, the lower part of the sewage tank is provided with a replenishing pump, the water inlet of the replenishing pump is connected with the sewage tank through a pipeline, the water outlet of the replenishing pump is connected with a first bag filter through a pipeline, the water outlet of the first bag filter is connected with the water inlet of a circulating pump through a pipeline, and the middle part of the first bag filter is also provided with a low-pressure sensor. The water outlet of the circulating pump is connected with the water inlet of the ceramic membrane filter through a pipeline.
The ceramic membrane filter is assembled by a plurality of groups of ceramic membrane filters, and inorganic ceramic membranes (tubular or flat plates) are arranged in the ceramic membrane filters.
The ceramic membrane filter is connected with a backwashing device, and the backwashing device consists of a backwashing tank, an air inlet electromagnetic valve and an air outlet electromagnetic valve. One end of the air inlet electromagnetic valve is connected with an air source, the other end of the air inlet electromagnetic valve is connected with an air inlet of the backflushing tank, and one end of the air outlet electromagnetic valve is connected with an air outlet of the backflushing tank and the other end of the air outlet electromagnetic valve is connected with a backflushing connecting port of the ceramic filter.
The ceramic membrane filter is connected with the chemical cleaning box through a pipeline and a control valve, the lower water outlet of the chemical cleaning box is connected with the front water inlet of the replenishing pump through a pipeline, and the upper water inlet of the chemical cleaning box is connected with the concentration discharge pipeline of the ceramic membrane filter. After the equipment is operated for a period of time, some impurities or chemical agents can be attached to the ceramic membrane tube and need to be cleaned by using specific chemical agents. At the moment, a supply pump and a circulating pump need to be opened, chemical agents mixed with tap water in a chemical cleaning box are pumped into a ceramic membrane filter for cleaning, and then the chemical agents are returned to the chemical cleaning box through a purified water and concentrated water channel for circulating cleaning. Because hospital sewage contains chemicals, radioactive waste water and pathogens in addition to general domestic sewage. Therefore, the cleaning must be frequently performed by using chemical agents, and the chemical agents are common disinfectants such as bleaching powder, liquid chlorine, sodium hypochlorite and ozone. Bleaching powder can inactivate enzymes in bacteria and cause death.
The ceramic membrane filter is also connected with the intermediate water tank through a pipeline and a control valve, and a purified water flow meter is arranged between the ceramic membrane filter and the intermediate water tank. The middle water tank is internally provided with a middle water tank floating ball and a middle water tank lower floating ball. The middle water tank is connected with a water inlet of a delivery pump through a control valve and a pipeline, a water outlet of the delivery pump is connected with a water inlet of a third bag filter, a water outlet of the third bag filter is connected with a water inlet of a high-pressure pump through a pipeline, and a temperature sensor 25 and a purified water quality meter are arranged on the pipeline connected in the middle. The water outlet of the high-pressure pump is connected with a reverse osmosis filter (RO filtering membrane), and a high-pressure sensor is arranged on a pipeline before the high-pressure pump enters the reverse osmosis filter. The pure water outlet of the reverse osmosis filter is directly connected to the pure water tank through a pipeline and a control valve, the middle pipeline is required to be provided with a pure water flow meter and a pure water quality meter, and the pure water tank is provided with an upper floating ball. And a concentrated water outlet of the reverse osmosis filter is respectively connected to the middle water tank and an upper water inlet of the sewage collecting tank through a pipeline and a control valve.
An upper floating ball of the sewage collecting box and a lower floating ball of the sewage collecting box are required to be arranged in the sewage collecting box. The lower outlet of the sewage collecting box is connected with the water inlet of a sewage pump through a pipeline and a control valve, the water outlet of the sewage pump is directly connected with the water inlet of the second bag filter through the pipeline and the control valve, the water outlet of the second bag filter is connected with the water inlet of the activated carbon filter, and the water outlet of the activated carbon filter is directly connected with a sewer.
The fluff filter has a fluff filter casing, the upper part of the fluff filter casing is provided with a fluff filter upper cover, the fluff filter upper cover is provided with a fluff filter water inlet, the middle part in the fluff filter casing is provided with a nylon screen, one side of the upper part of the fluff filter casing is provided with a fluff filter discharge port for discharging fluff and impurities in sewage filtered by the nylon screen, and the fluff filter casing is coarse filtration. A fluff filter water outlet is formed in one side of the lower portion of the fluff filter shell and used for discharging sewage which is filtered by a nylon screen mesh to remove fluff and impurities in the sewage, and a fluff filter bottom cover is arranged on one side of the bottom of the fluff filter shell and used for discharging sewage.
When the fluff filter is used, cleaning sewage of surgical instruments and surgical linen in a hospital flows into a water inlet of the fluff filter through a pipeline, a nylon screen is arranged in the middle in the shell of the fluff filter and can remove fluff and impurities in the sewage, the fluff and the impurities are discharged through a discharge port of the fluff filter, and the remaining sewage flows into a sewage tank through a water outlet of the fluff filter. The nylon screen adopts a nylon screen with 150-mesh aperture.
The first bag filter is provided with a bag filter barrel body, a plurality of filter bags are arranged in the bag filter barrel body, a bag filter water inlet is formed in the upper portion of the bag filter barrel body, a bag filter water outlet is formed in the lower portion of the bag filter barrel body, and a bag filter exhaust port is formed in the top of the bag filter barrel body.
When the first bag filter is used, sewage enters the first bag filter from the water inlet of the first bag filter, flows into the tank body of the first bag filter after being filtered by the filter cloth bag, and flows out from the water outlet of the first bag filter. The bag filter exhaust port at the top of the bag filter barrel body is used for exhausting redundant gas in the tank body.
The ceramic membrane filter is provided with a ceramic membrane filter shell, a plurality of inorganic ceramic membranes (tubular or flat plates) are arranged in the ceramic membrane filter shell, a ceramic membrane filter water inlet is formed in the bottom of the ceramic membrane filter shell, a ceramic membrane filter concentrated water outlet is formed in the top of the ceramic membrane filter shell, a ceramic membrane filter purified water outlet is formed in the upper portion of the ceramic membrane filter shell, and a ceramic membrane filter backwashing port is formed in the lower portion of the ceramic membrane filter shell.
When the ceramic membrane filter is used, sewage pumped from the sewage tank enters the ceramic membrane filter from the water inlet of the ceramic membrane filter, the sewage is filtered by the inorganic ceramic membrane (tube type) through pressurization to be divided into purified water and concentrated water, the purified water flows out to the middle water tank through the purified water outlet of the ceramic membrane filter, and the concentrated water returns to the front of the circulating pump through the concentrated water outlet of the ceramic membrane filter to continue to circulate. The back washing port of the ceramic membrane filter is connected with the back washing tank and is used during back washing.
The backflushing tank is provided with a backflushing tank body, the upper part of the backflushing tank body is provided with a backflushing tank air inlet, a pressure gauge mounting opening and a backflushing tank air outlet, and the pressure gauge is mounted at the pressure gauge mounting opening.
When the ceramic membrane filter needs backflushing, the air inlet of the backflushing tank is opened, the air outlet of the backflushing tank is closed, compressed air enters, water in the backflushing tank body is pressed into the ceramic membrane filter to clean the surface of the inorganic ceramic membrane, the air inlet of the backflushing tank is closed after cleaning is finished, the air outlet of the backflushing tank is opened, gas in the backflushing tank body is discharged, and then water is injected again. The pressure change in the recoil tank can be monitored through the pressure gauge arranged at the pressure gauge mounting port in the whole process.
The reverse osmosis filter is provided with a plurality of reverse osmosis filters. The reverse osmosis filter is provided with a reverse osmosis membrane tube, an RO filtering membrane is arranged in the reverse osmosis membrane tube, reverse osmosis filter water outlets are arranged at two ends of the reverse osmosis membrane tube, and a reverse osmosis filter water inlet is arranged on the reverse osmosis membrane tube.
When the reverse osmosis filter is used, a plurality of reverse osmosis filters are arranged. And (3) putting the RO filtering membrane into a reverse osmosis membrane tube, and sealing two ends of the reverse osmosis membrane tube. The purified water filtered by the ceramic membrane filter is pumped into the reverse osmosis membrane pipe from the water inlet of the reverse osmosis filter through high pressure, then enters the RO filtration membrane through high pressure extrusion, and finally flows out from the water outlet of the reverse osmosis filter, namely the purified water.
When the reverse osmosis filter is used, a plurality of reverse osmosis filters are arranged. A plurality of reverse osmosis filters are used in parallel. The reverse osmosis filter is provided with an RO filtering membrane. RO is an abbreviation for Reverse Osmosis in english, meaning Reverse Osmosis in chinese. In general, water flows from a low concentration to a high concentration, and after the water is pressurized, the water flows from the high concentration to the low concentration, i.e., the so-called reverse osmosis principle: because the pore diameter of the RO filtering membrane is one million (0.0001 micron) of hair, the RO filtering membrane can not be seen by naked eyes generally, and bacteria and viruses are 5000 times of the hair, so that the bacteria and viruses in water can be removed. Thus, only water molecules and some mineral ions can pass through (the passing ions do not beneficially lose orientation), and other impurities and heavy metals are removed from the waste. All seawater desalination processes and spaceman wastewater recovery treatment are adopted, so the RO filtering membrane is also called as an external high-tech artificial kidney. Both domestic and foreign fields, medical science, military and civil fields, adopt top-grade RO filtration membrane to carry out macromolecule filtration.
The surgical instrument and the surgical linen cleaning wastewater treatment system are matched with an electric control cabinet, a PLC is arranged, a temperature sensor, a low-pressure sensor, a high-pressure sensor, a pure water quality meter, a pure water flow meter, a pure water quality meter, a pure water tank upper floating ball, a middle water tank lower floating ball, a sewage collecting tank upper floating ball and a sewage collecting tank lower floating ball are respectively connected with the controller through signal control lines, and the PLC controls the air inlet electromagnetic valve, the exhaust electromagnetic valve, the supply pump, the circulating pump, the sewage pump, the high-pressure pump and the delivery pump to work.
The wastewater treatment method of the surgical instrument and surgical linen cleaning wastewater treatment system treats the surgical instrument and surgical linen cleaning wastewater and wastewater of the laundry industry into pure water, and comprises the following specific steps:
(1) before the cleaning wastewater flows into the sewage tank, the cleaning wastewater is filtered by a fluff filter to primarily filter out impurities such as silt, human body dander, hair fiber and the like, and then the cleaning wastewater enters the sewage tank to be collected. And pumping the sewage in the sewage tank into the first bag filter by the replenishment pump to remove impurities such as silt, human body dander, hair fiber and the like in the first bag filter again, starting the circulating pump, and pumping the wastewater in the first bag filter.
(2) The replenishing pump is started to raise the water pressure in the pipeline to 2kg, and then the circulating pump is started to pump the wastewater into the ceramic membrane filter for filtering treatment. The ceramic membrane filter is assembled by a plurality of groups of ceramic membrane filters, and inorganic ceramic membranes (tubular or flat plates) are arranged in the ceramic membrane filters. The low-pressure sensor is used for detecting the pressure in the pipeline and preventing the circulating pump from idling due to insufficient water pressure in the pipeline so as to burn out the motor.
(3) In the process of purifying wastewater, a ceramic filter needs to be backwashed to prevent the water yield of an inorganic ceramic membrane (tubular or flat plate) from being influenced by the attachment of impurities on the surface, the process is that an air inlet electromagnetic valve opens compressed air to enter a backflushing tank, the water in the backflushing tank is pressed into the ceramic membrane filter to scour the surface of the inorganic ceramic membrane (tubular or flat plate) to reduce the attachment of the impurities on the surface, the air inlet electromagnetic valve is closed after the flushing is finished, an exhaust electromagnetic valve is opened to discharge the air in the backflushing tank, and meanwhile, the purified water produced by the ceramic membrane filter is replenished.
(4) The waste water is divided into two parts of pure water and concentrated water after being treated by the ceramic membrane filter, and the concentrated water continuously enters the ceramic membrane filter for treatment before returning to the circulating pump. The purified water is conveyed into the middle water tank after the flow of the purified water is measured on line by the purified water flow meter, and when the water level in the middle water tank reaches the floating ball on the middle water tank, the water is prevented from overflowing, and the supply pump and the circulating pump are closed.
(5) The purified water is collected in the middle water tank and needs to be subjected to secondary treatment, the conveying pump pumps the water in the middle water tank into the third bag filter for secondary filtration, more cloth bags with more meshes are used in the third bag filter to filter finer impurities, the temperature of the purified water passing through the third bag filter is measured by a temperature sensor, and the RO filtering membrane in the reverse osmosis filter is damaged when the water temperature is higher than 40 ℃. Both the delivery pump and the high pressure pump will not be activated if the water temperature is too high. The water temperature is lower than 40 ℃, the high-pressure pump is started to pressurize and convey the purified water in the pipeline into the RO filtering membrane in the RO filter, and meanwhile, the high-pressure sensor measures the water pressure in the pipeline on line to prevent the RO filtering membrane from being damaged due to overhigh water pressure.
(6) The water treated by the RO filtering membrane of the reverse osmosis filter is pure water and concentrated water, the pure water is directly connected into the pure water tank through a pipeline and can be used for the second time, the pure water tank is internally provided with a floating ball on the pure water tank, and the conveying pump and the high-pressure pump can be controlled to stop when the water level in the pure water tank is too high. Meanwhile, a pure water flow meter and a pure water quality meter are arranged on the section of the conveying pipeline and are used for monitoring the flow rate and the water quality condition of the pure water. The other part of the concentrated water is discharged into the middle water tank when the water quality is good, and is discharged into the sewage collecting tank when the water quality is poor, and the floating ball on the sewage collecting tank in the sewage collecting tank controls the on-off of the front delivery pump and the high-pressure pump.
(7) When the water level in the sewage collecting tank is too high, the sewage pump needs to be started to discharge, but when the floating ball falls down under the sewage collecting tank, the water level is very low, the sewage pump stops working, and when the sewage pump is normally started to discharge water, the sewage in the sewage collecting tank can be discharged outside only by double filtration of the bag filter II and the activated carbon filter.
The core of the ceramic membrane filter is an inorganic ceramic membrane (tubular or flat plate type), which is a high and new technology in the field of nano-scale separation and has the characteristics of good corrosion resistance, high temperature resistance and the like. The filtering form is 'cross flow filtering', under the driving of pressure, the raw material liquid flows through the membrane tube, the small molecular components permeate the membrane, and the large molecular components are intercepted by the membrane, so that the treatment of low-temperature separation, concentration and purification of the nanoscale substances in the fluid is realized. Its advantage still has: high temperature resistance, and online disinfection can be realized; has good chemical stability and can resist microbial degradation. Good stability to organic solvents, corrosive gases and microbial attack. The mechanical strength is high, the high pressure resistance is realized, and the wear resistance and the scouring resistance are good; narrow pore size distribution, good separation performance, large permeation quantity, repeated cleaning and regeneration and long service life.
Surgical instruments and operation linen cleaning wastewater treatment system reasonable in design, with surgical instruments and operation linen cleaning wastewater processing become the pure water, get into the pure water case, can supply the secondary to use, saved the water consumption greatly, reached energy saving and emission reduction's purpose to take up an area of for a short time, installation and later maintenance are also simple, have further saved the input cost in earlier stage. The sewage for cleaning surgical instruments and linen in hospitals contains chemical substances, radioactive waste water and pathogens besides the general washing sewage. Therefore, it is necessary to frequently clean the surface with chemical agents such as bleaching powder, liquid chlorine, sodium hypochlorite, and ozone. Bleaching powder can inactivate enzymes in bacteria and cause death. Therefore, the system can effectively remove the residues of the conventional detergent in the surgical instruments and surgical linen cleaning wastewater, and can also remove harmful bacteria and viruses in the wastewater, so that the water can be discharged up to the standard and can even be reused.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
FIG. 1 is a structural and process flow diagram of a surgical instrument and surgical linen cleaning wastewater treatment system;
FIG. 2 is a schematic view of the construction of a fluff filter of the surgical instrument and the surgical linen cleaning wastewater treatment system;
FIG. 3 is a schematic diagram of a bag filter structure of a surgical instrument and a surgical linen cleaning wastewater treatment system;
FIG. 4 is a schematic structural diagram of a recoil tank of a surgical instrument and a surgical linen cleaning wastewater treatment system;
FIG. 5 is a schematic view of the structure of a ceramic membrane filter of the surgical instrument and surgical linen cleaning wastewater treatment system;
fig. 6 is a schematic structural diagram of a reverse osmosis filter of the surgical instrument and surgical linen cleaning wastewater treatment system.
In the figure: 1. the device comprises a fluff filter, 2, a sewage tank, 3, a supply pump, 4, bag filters I and 5, a low-pressure sensor, 6, a ceramic membrane filter, 7, an air inlet electromagnetic valve, 8 and an air outlet electromagnetic valve. 9. A backflushing tank, 10, a circulating pump, 11, a pure water tank upper floating ball, 12, a pure water tank, 13 and a pure water flowmeter. 14. The device comprises a chemical cleaning box, 15, a pure water quality meter, 16, a reverse osmosis filter (RO filter membrane), 17, a pure water flow meter (meter), 18, an upper floating ball of a middle water tank, 19, a lower floating ball of the middle water tank, 20, the middle water tank, 21, a sewage discharge pump, 22, a second bag type filter, 23, an activated carbon filter, 24, a high pressure sensor, 25, a temperature sensor, 26, a pure water quality meter, 27, a high pressure pump, 28, an upper floating ball of a sewage collection box, 29, a sewage collection box, 30, a lower floating ball of the sewage collection box, 31, a delivery pump, 32 and a third bag type filter;
1-1 parts of a fluff filter shell, 1-2 parts of a fluff filter water inlet, 1-3 parts of a filter discharge port, 1-4 parts of a fluff filter water outlet, 1-5 parts of a nylon screen mesh, 1-6 parts of a fluff filter bottom cover;
4-1 parts of a bag filter barrel body, 4-2 parts of a bag filter water inlet, 4-3 parts of a filter cloth bag, 4-4 parts of a bag filter water outlet, 4-5 parts of a bag filter exhaust port;
6-1 parts of a ceramic membrane filter shell, 6-2 parts of a ceramic membrane filter water inlet, 6-3 parts of a ceramic membrane filter water purification outlet, 6-4 parts of a ceramic membrane filter back flushing port, 6-5 parts of an inorganic ceramic membrane, 6-6 parts of a ceramic membrane filter concentrated water outlet;
9-1 parts of a backflushing tank body, 9-2 parts of a backflushing tank air inlet, 9-3 parts of a pressure gauge mounting port, 9-4 parts of a pressure gauge, 9-5 parts of a backflushing tank air outlet;
16-1 parts of a reverse osmosis membrane tube, 16-2 parts of a reverse osmosis filter water outlet, 16-3 parts of an RO filtration membrane, 16-4 parts of a reverse osmosis filter water inlet.
Detailed Description
Referring to fig. 1 to 6, the surgical instrument and surgical linen cleaning and treating system includes a down filter 1, a sewage tank 2, a replenishing pump 3, a ceramic membrane filter 6, a back flush tank 9, a circulating pump 10, a pure water tank 12, a chemical cleaning tank 14, a pure water quality meter 15, a reverse osmosis filter (RO filter membrane) 16, a pure water flow meter 17, an intermediate water tank 20, a sewage discharge pump 21, a pure water quality meter 26, a high pressure pump 27, a sewage collection tank 29, and a delivery pump 31.
The upper part of the sewage tank 2 is provided with a fluff filter 1, the side of the fluff filter is provided with a supply pump 3, the water inlet of the supply pump 3 is connected with the sewage tank 2 through a pipeline, the water outlet of the supply pump 3 is connected with a bag filter 4 through a pipeline, the water outlet of the bag filter 4 is connected with the water inlet of a circulating pump 10 through a pipeline, and the middle part of the bag filter is also provided with a low-pressure sensor 5. The water outlet of the circulating pump 10 is connected with the water inlet of the ceramic membrane filter 6 through a pipeline.
The ceramic membrane filter 6 is assembled by a plurality of groups of ceramic membrane filters, and a tubular or flat plate type inorganic ceramic membrane is arranged in the ceramic membrane filter 6.
The ceramic membrane filter 6 is connected with a back washing device which consists of a back washing tank 9, an air inlet electromagnetic valve 7 and an air outlet electromagnetic valve 8. One end of the air inlet electromagnetic valve 7 is connected with an air source, the other end of the air inlet electromagnetic valve 7 is connected with an air inlet of the backflushing tank 9, and one end of the air outlet electromagnetic valve 8 is connected with an air outlet of the backflushing tank 9 and the other end is connected with a backflushing connecting port of the ceramic filter 6.
The ceramic membrane filter 6 is connected with the chemical cleaning box 14 through a pipeline and a control valve, the lower water outlet of the chemical cleaning box 14 is connected with the front water inlet of the replenishing pump 3 through a pipeline, and the upper water inlet of the chemical cleaning box 14 is connected with the concentration discharge pipeline of the ceramic membrane filter 6. After the equipment is operated for a period of time, some impurities or chemical agents can be attached to the ceramic membrane tube and need to be cleaned by using specific chemical agents. At this time, the replenishment pump 3 and the circulating pump 10 need to be opened, chemical agents mixed with tap water in the chemical cleaning tank are pumped into the ceramic membrane filter 6 for cleaning, and then the chemical agents are returned to the chemical cleaning tank 14 through a purified water and concentrated water path for circulating cleaning. Because hospital sewage contains chemicals, radioactive waste water and pathogens in addition to general domestic sewage. Therefore, it is necessary to frequently clean the surface with chemical agents, such as disinfectants, including bleaching powder, liquid chlorine, sodium hypochlorite, and ozone. Bleaching powder can inactivate enzymes in bacteria and cause death.
The ceramic membrane filter 6 is also connected with an intermediate water tank 20 through a pipeline and a control valve, and a purified water flow meter 17 is arranged between the ceramic membrane filter and the intermediate water tank. An upper floating ball 18 of the middle water tank and a lower floating ball 19 of the middle water tank are arranged in the middle water tank. The intermediate water tank 20 is connected with a water inlet of a delivery pump 31 through a control valve and a pipeline, a water outlet of the delivery pump 31 is connected with a water inlet of a third bag filter 32, a water outlet of the third bag filter 32 is connected with a water inlet of a high-pressure pump 27 through a pipeline, and a temperature sensor 25 and a purified water quality meter 26 are installed on the pipeline connected in the middle. The water outlet of the high-pressure pump 27 is connected with a reverse osmosis filter (RO filter membrane) 16, and a high-pressure sensor 24 is arranged on a pipeline before the water enters the reverse osmosis filter 16. The pure water outlet of the reverse osmosis filter 16 is directly connected to the pure water tank 12 through a pipeline and a control valve, a pure water flow meter 13 and a pure water quality meter 15 are required to be installed in the middle pipeline, and a pure water tank upper floating ball 11 is installed in the pure water tank. Furthermore, the concentrated water outlet of the reverse osmosis filter 16 is connected to the water inlets of the intermediate water tank 20 and the sewage collecting tank 29 through pipes and control valves, respectively.
The sewage collecting tank 29 is provided with a sewage collecting tank upper floating ball 28 and a sewage collecting tank lower floating ball 30. The lower outlet of the sewage collecting tank 29 is connected with the water inlet of the sewage pump 21 through a pipeline and a control valve, the water outlet of the sewage pump 21 is directly connected with the water inlet of the second bag filter 22 through a pipeline and a control valve, the water outlet of the second bag filter 22 is connected with the water inlet of the activated carbon filter 23, and the water outlet of the activated carbon filter 23 is directly connected with a sewer.
The down filter 1 is provided with a down filter shell 1-1, the upper part of the down filter shell 1-1 is provided with a down filter upper cover, the down filter upper cover is provided with a down filter water inlet 1-2, the middle part in the down filter shell 1-1 is provided with a nylon screen 1-5, one side of the upper part of the down filter shell 1-1 is provided with a down filter discharge port 1-3 for discharging down and impurity in sewage filtered by the nylon screen 1-5, and coarse filtration is carried out. One side of the lower part of the shell 1-1 of the fluff filter is provided with a water outlet 1-4 of the fluff filter for discharging sewage which is filtered by a nylon screen 1-5 to remove fluff and impurities in the sewage, and one side of the bottom of the shell 1-1 of the fluff filter is provided with a bottom cover 1-6 of the fluff filter for discharging sewage.
When the fluff filter 1 is used, cleaning sewage of surgical instruments and surgical linen in a hospital flows into a water inlet 1-2 of the fluff filter through a pipeline, a nylon screen mesh 1-5 is arranged in the middle of the inside of a housing 1-1 of the fluff filter to remove fluff and impurities in the sewage, the fluff and impurities are discharged through a discharge port 1-3 of the fluff filter, and the remaining sewage flows into a sewage tank 2 through a water outlet 1-4 of the fluff filter. The nylon screen mesh 1-5 adopts a nylon mesh with 150 meshes of aperture.
The structure of the first bag filter 4 is the same as that of the second bag filter 22 and the third bag filter 32, the first bag filter 4 is provided with a bag filter barrel body 4-1, a plurality of filter cloth bags 4-3 are arranged in the bag filter barrel body 4-1, a bag filter water inlet 4-2 is arranged at the upper part of the bag filter barrel body 4-1, a bag filter water outlet 4-4 is arranged at the lower part of the bag filter barrel body 4-1, and a bag filter exhaust port 4-5 is arranged at the top of the bag filter barrel body 4-1.
When the bag filter I4-1 is used, sewage enters the bag filter I4 from the water inlet 4-2 of the bag filter I, flows into the tank body 4-1 of the bag filter through the filtration of the filter cloth bag 4-3, and flows out through the water outlet 4-4 of the bag filter I. The bag filter exhaust port 4-5 at the top of the bag filter barrel body 4-1 is used for exhausting redundant gas in the tank body.
The ceramic membrane filter 6 is provided with a ceramic membrane filter shell 6-1, a plurality of inorganic ceramic membranes (tubular or flat plates) are arranged in the ceramic membrane filter shell 6-1, a ceramic membrane filter water inlet 6-2 is formed in the bottom of the ceramic membrane filter shell 6-1, a ceramic membrane filter concentrated water outlet 6-6 is formed in the top of the ceramic membrane filter shell 6-1, a ceramic membrane filter water purification outlet 6-6 is formed in the upper portion of the ceramic membrane filter shell 6-1, and a ceramic membrane filter back-washing port 6-4 is formed in the lower portion of the ceramic membrane filter shell 6-1.
When the ceramic membrane filter 6 is used, sewage pumped from the sewage tank enters the ceramic membrane filter 6 from the water inlet 6-2 of the ceramic membrane filter, the sewage is filtered by the inorganic ceramic membrane (tubular) 6-5 under pressure to be divided into purified water and concentrated water, the purified water flows out to the intermediate water tank 20 through the purified water outlet 6-3 of the ceramic membrane filter, and the concentrated water continues to circulate before returning to the circulating pump 10 through the concentrated water outlet 6-6 of the ceramic membrane filter. The back washing port 6-4 of the ceramic membrane filter is connected with the back washing tank 9 and is used during back washing.
The backflushing tank 9 is provided with a backflushing tank body 9-1, the upper part of the backflushing tank body 9-1 is provided with a backflushing tank air inlet 9-2, a pressure gauge mounting opening 9-3 and a backflushing tank air outlet 9-5, and the pressure gauge 9-4 is arranged at the pressure gauge mounting opening 9-3. When the ceramic membrane filter 6 needs backflushing, the air inlet 9-1 of the backflushing tank is opened, the air outlet 9-3 of the backflushing tank is closed to enter compressed air, the water in the backflushing tank 9-1 is pressed into the ceramic membrane filter 6 to clean the surface of the inorganic ceramic membrane, the air inlet 9-2 of the backflushing tank is closed after cleaning is finished, the air outlet 9-5 of the backflushing tank is opened, the gas in the backflushing tank 9-1 is discharged, and then water is injected again. The pressure change in the recoil tank 9 can be monitored through the pressure gauge 9-4 arranged at the pressure gauge mounting port 9-3 in the whole process.
The reverse osmosis filter 16 is provided with a plurality of reverse osmosis filters. The reverse osmosis filter 16 is provided with a reverse osmosis membrane tube 16-1, an RO filtration membrane 16-3 is arranged in the reverse osmosis membrane tube 16-1, two ends of the reverse osmosis membrane tube 16-1 are provided with a reverse osmosis filter water outlet 16-2, and the reverse osmosis membrane tube 16-1 is provided with a reverse osmosis filter water inlet 16-4.
When the reverse osmosis filter 16 is used, a plurality of reverse osmosis filters are provided. And (3) putting the RO filtering membrane 16-3 into the reverse osmosis membrane tube 6-1, and sealing two ends. The purified water filtered by the ceramic membrane filter is injected into the reverse osmosis membrane tube 16-1 from the water inlet 1 of the reverse osmosis filter through high pressure, then enters the RO filtration membrane through high pressure extrusion, and finally flows out from the water outlet 2 of the reverse osmosis filter, namely the purified water.
The reverse osmosis filter 16 is provided with a plurality of reverse osmosis filters when in use. A plurality of reverse osmosis filters are used in parallel. The reverse osmosis filter is provided with an RO filtering membrane. RO is an abbreviation for Reverse Osmosis in english, meaning Reverse Osmosis in chinese. In general, water flows from a low concentration to a high concentration, and after the water is pressurized, the water flows from the high concentration to the low concentration, i.e., the so-called reverse osmosis principle: because the pore diameter of the RO filtering membrane is one million (0.0001 micron) of hair, the RO filtering membrane can not be seen by naked eyes generally, and bacteria and viruses are 5000 times of the hair, so that the bacteria and viruses in water can be removed. Thus, only water molecules and some mineral ions can pass through (the passing ions do not beneficially lose orientation), and other impurities and heavy metals are removed from the waste. All seawater desalination processes and spaceman wastewater recovery treatment are adopted, so the RO filtering membrane is also called as an external high-tech artificial kidney. Top-grade RO membranes are adopted for polymer filtration in medical, military and civil fields at home and abroad.
An electrical appliance control cabinet is matched with the surgical instrument and the surgical linen cleaning wastewater treatment system, and is provided with a PLC (programmable logic controller), a temperature sensor 25, a low-pressure sensor 5, a high-pressure sensor 24, a pure water quality meter 15, a pure water flow meter 17, a pure water quality meter 26, a pure water tank upper floating ball, a middle water tank upper floating ball 18, a middle water tank lower floating ball 19, a sewage collection tank upper floating ball 28 and a sewage collection tank lower floating ball 30 are respectively connected with the controller through signal control lines, and an air inlet electromagnetic valve 7, an exhaust electromagnetic valve 8, a supply pump 3, a circulating pump 10, a sewage discharge pump 21, a high-pressure pump 27 and a conveying pump 31 are controlled to work through the PLC.
The wastewater treatment method of the surgical instrument and surgical linen cleaning wastewater treatment system treats the surgical instrument and surgical linen cleaning wastewater and wastewater of the laundry industry into pure water, and comprises the following specific steps:
(1) before the cleaning wastewater flows into the sewage tank 2, the cleaning wastewater is filtered by a fluff filter 1 to primarily filter out impurities such as silt, human body dander, hair fiber and the like, and then the cleaning wastewater enters the sewage tank 2 to be collected. And pumping the sewage in the sewage tank 2 into the bag filter 4 through the replenishing pump 3 to filter impurities such as silt, human body dander, hair fiber and the like in the sewage again, starting the circulating pump 10 and pumping the wastewater in the bag filter 4.
(2) The replenishing pump 3 is started to raise the water pressure in the pipeline to 2kg, and then the circulating pump 10 is started to pump the wastewater into the ceramic membrane filter 6 for filtering treatment. The ceramic membrane filter 6 is assembled by a plurality of groups of ceramic membrane filters, and inorganic ceramic membranes (tubular or flat plates) are arranged in the ceramic membrane filter 6. The low pressure sensor 5 here serves to detect the pressure in the pipe and prevent the water pressure in the pipe from being insufficient for the circulation pump 10 to run idle and burn out the motor.
(3) In the process of purifying wastewater, the ceramic filter 6 needs to be backwashed to prevent the water yield of the inorganic ceramic membrane (tubular or flat plate) from being influenced by the attachment of impurities on the surface, the process is that the air inlet electromagnetic valve 7 is opened to compress air into the backflushing tank 9, the water in the backflushing tank is pressed into the ceramic membrane filter 6 to scour the surface of the inorganic ceramic membrane (tubular or flat plate) to reduce the attachment of the impurities on the surface, the air inlet electromagnetic valve 7 is closed after the washing is finished, the air outlet electromagnetic valve 8 is opened to discharge the air in the backflushing tank 9, and meanwhile, the purified water produced by the ceramic membrane filter 6 is supplemented.
(4) The waste water is divided into two parts of pure water and concentrated water after being treated by the ceramic membrane filter 6, and the concentrated water continuously enters the ceramic membrane filter 6 for treatment before returning to the circulating pump 10. The purified water is delivered to the intermediate water tank 20 after the flow rate of the purified water is measured on line by the purified water flow meter 17, and when the water level in the intermediate water tank 20 reaches the upper floating ball 18 of the intermediate water tank, the overflow of the water is prevented, and the supply pump 3 and the circulating pump 10 are closed.
(5) The purified water is collected in the intermediate water tank 20 and needs to be subjected to secondary treatment, the conveying pump 31 pumps the water in the intermediate water tank 20 into the third bag filter 32 for secondary filtration, more cloth bags with more meshes are used in the third bag filter 32 to filter finer impurities, the temperature of the purified water passing through the third bag filter 32 is measured by the temperature sensor 25, and the RO filtering membrane 16 is damaged when the water temperature is higher than 40 ℃. If the water temperature is too high, neither the delivery pump 31 nor the high pressure pump 27 will be activated. When the water temperature is lower than 40 ℃, the high-pressure pump 27 is started to pressurize and convey the purified water in the pipeline into the RO filtering membrane 16, and meanwhile, the high-pressure sensor 24 measures the water pressure in the pipeline on line to prevent the membrane 16 of the RO filtering membrane from being damaged due to overhigh water pressure.
(6) The water treated by the RO filtration membrane of the reverse osmosis filter 16 is pure water and concentrated water, the pure water is directly connected to the pure water tank 12 through a pipeline and can be used for the second time, the pure water tank 12 is internally provided with a pure water tank upper floating ball 11, and the delivery pump 31 and the high pressure pump 27 can be controlled to stop when the water level in the pure water tank 11 is too high. Meanwhile, a pure water flow meter 13 and a pure water quality meter 15 are arranged on the section of the conveying pipeline and are used for monitoring the flow rate and the water quality condition of the pure water. The other part of the concentrated water is discharged into the middle water tank 20 when the water quality is good, the other part of the concentrated water is discharged into the sewage collecting tank 29 when the water quality is poor, and the floating ball 28 on the sewage collecting tank in the sewage collecting tank 29 controls the on-off of the front conveying pump 31 and the high-pressure pump 27.
(7) When the water level in the sewage collection tank 29 is too high, the sewage pump 21 needs to be started to discharge, but when the lower floating ball 30 of the sewage collection tank falls, the water level is low, the sewage pump 21 stops working, and when the sewage collection tank 29 is normally started to discharge water, the sewage in the sewage collection tank 29 can be discharged outside only by double filtration of the bag filter II 22 and the activated carbon filter 23.
The core of the ceramic membrane filter 6 is an inorganic ceramic membrane (tubular or flat plate type), which is a high and new technology in the field of nano-scale separation and has the characteristics of good corrosion resistance, high temperature resistance and the like. The filtering form is 'cross flow filtering', under the driving of pressure, the raw material liquid flows through the membrane tube, the small molecular components permeate the membrane, and the large molecular components are intercepted by the membrane, so that the treatment of low-temperature separation, concentration and purification of the nanoscale substances in the fluid is realized. Its advantage still has: high temperature resistance, and online disinfection can be realized; has good chemical stability and can resist microbial degradation. Good stability to organic solvents, corrosive gases and microbial attack. The mechanical strength is high, the high pressure resistance is realized, and the wear resistance and the scouring resistance are good; narrow pore size distribution, good separation performance, large permeation quantity, repeated cleaning and regeneration and long service life.
Claims (9)
1. A surgical instrument and a surgical linen cleaning wastewater treatment system are characterized by comprising a fluff filter, a sewage tank, a supply pump, a ceramic membrane filter, a backwashing tank, a circulating pump, a pure water tank, a chemical cleaning tank, a pure water quality meter, a reverse osmosis filter, a pure water flow meter, an intermediate water tank, a sewage discharge pump, a pure water quality meter, a high-pressure pump, a sewage collection tank and a delivery pump; a fluff filter is arranged above the sewage tank, a replenishing pump is arranged beside the sewage tank, a water inlet of the replenishing pump is connected with the sewage tank through a pipeline, a water outlet of the replenishing pump is connected with a first bag type filter through a pipeline, a water outlet of the first bag type filter is connected with a water inlet of a circulating pump through a pipeline, a low-pressure sensor is further arranged in the middle of the first bag type filter, and a water outlet of the circulating pump is connected with a water inlet of a ceramic membrane filter;
the ceramic membrane filter is connected with a backwashing device, and the backwashing device consists of a backwashing tank, an air inlet electromagnetic valve and an air outlet electromagnetic valve; one end of the air inlet electromagnetic valve is connected with an air source, the other end of the air inlet electromagnetic valve is connected with an air inlet of the backflushing tank, and one end of the air outlet electromagnetic valve is connected with an air outlet of the backflushing tank and the other end of the air outlet electromagnetic valve is connected with a backflushing connecting port of the ceramic filter;
the ceramic membrane filter is connected with the chemical cleaning box through a pipeline and a control valve, a lower water outlet of the chemical cleaning box is connected with a front water inlet of the replenishing pump through a pipeline, and an upper water inlet of the chemical cleaning box is connected with a concentrated discharge pipeline of the ceramic membrane filter;
the ceramic membrane filter is also connected with an intermediate water tank through a pipeline and a control valve, a purified water flow meter is arranged between the ceramic membrane filter and the intermediate water tank, an intermediate water tank floating ball and an intermediate water tank lower floating ball are arranged in the intermediate water tank, the intermediate water tank is connected with a water inlet of a delivery pump through the control valve and the pipeline, a water outlet of the delivery pump is connected with a water inlet of a bag filter III, a water outlet of the bag filter III is connected with a water inlet of a high-pressure pump through the pipeline, a temperature sensor and a purified water quality meter are arranged on the pipeline connected in the middle, a water outlet of the high-pressure pump; a pure water outlet of the reverse osmosis filter is directly connected to a pure water tank through a pipeline and a control valve, a pure water flow meter and a pure water quality meter are required to be installed on the middle pipeline, an upper floating ball of the pure water tank is installed in the pure water tank, and a concentrated water outlet of the reverse osmosis filter is connected to an upper water inlet of the middle water tank and an upper water inlet of the sewage collecting tank through the pipeline and the control valve respectively;
an upper sewage collecting tank floating ball and a lower sewage collecting tank floating ball are required to be installed in the sewage collecting tank, a lower outlet of the sewage collecting tank is connected with a water inlet of the sewage pump through a pipeline and a control valve, a water outlet of the sewage pump is directly connected to a water inlet of the second bag filter through the pipeline and the control valve, a water outlet of the second bag filter is connected to a water inlet of the activated carbon filter, and a water outlet of the activated carbon filter is directly connected to a sewer.
2. The system for treating surgical instruments and surgical linen cleaning wastewater according to claim 1,
the fine hair filter have fine hair filter casing, fine hair filter casing upper portion is provided with fine hair filter upper cover, be equipped with fine hair filter water inlet on the fine hair filter upper cover, the nylon screen cloth is equipped with at the middle part in the fine hair filter casing, fine hair filter casing upper portion one side is provided with fine hair filter discharge port, be used for discharging fine hair and the impurity in the sewage that gets off through the nylon screen cloth filtration, for coarse filtration, fine hair filter casing lower part one side is provided with fine hair filter delivery port, be used for discharging the sewage after the fine hair and the impurity of nylon screen cloth cross the filtration remove in the sewage, fine hair filter casing bottom one side is provided with fine hair filter bottom, be used.
3. The system for treating surgical instruments and surgical linen cleaning wastewater according to claim 1,
the first bag filter is provided with a bag filter barrel body, a plurality of filter bags are arranged in the bag filter barrel body, a bag filter water inlet is formed in the upper portion of the bag filter barrel body, a bag filter water outlet is formed in the lower portion of the bag filter barrel body, and a bag filter exhaust port is formed in the top of the bag filter barrel body.
4. The system for treating surgical instruments and surgical linen cleaning wastewater according to claim 1,
the ceramic membrane filter is provided with a ceramic membrane filter shell, a plurality of inorganic ceramic membranes are arranged in the ceramic membrane filter shell, a ceramic membrane filter water inlet is formed in the bottom of the ceramic membrane filter shell, a ceramic membrane filter concentrated water outlet is formed in the top of the ceramic membrane filter shell, a ceramic membrane filter purified water outlet is formed in the upper portion of the ceramic membrane filter shell, and a ceramic membrane filter backwashing port is formed in the lower portion of the ceramic membrane filter shell.
5. The system for treating surgical instruments and surgical linen cleaning wastewater according to claim 1,
the backflushing tank is provided with a backflushing tank body, the upper part of the backflushing tank body is provided with a backflushing tank air inlet, a pressure gauge mounting opening and a backflushing tank air outlet, and the pressure gauge is mounted at the pressure gauge mounting opening.
6. The surgical instrument and surgical linen cleaning wastewater treatment system as claimed in claim 1, wherein the reverse osmosis filter is provided with a plurality of reverse osmosis filters; the reverse osmosis filter is provided with a reverse osmosis membrane tube, an RO filtering membrane is arranged in the reverse osmosis membrane tube, reverse osmosis filter water outlets are arranged at two ends of the reverse osmosis membrane tube, and a reverse osmosis filter water inlet is arranged on the reverse osmosis membrane tube.
7. The system for treating surgical instruments and surgical linen cleaning wastewater according to claim 1,
the ceramic membrane filter is assembled by a plurality of groups of ceramic membrane filters, and a tubular or flat plate type inorganic ceramic membrane is arranged in the ceramic membrane filter.
8. The system for treating surgical instruments and surgical linen cleaning wastewater according to claim 1,
the reverse osmosis filter is provided with a plurality of reverse osmosis filters which are used in parallel.
9. The system for treating surgical instruments and surgical linen cleaning wastewater according to claim 1,
the surgical instrument and the surgical linen cleaning wastewater treatment system are matched with an electric control cabinet, a PLC is arranged, a temperature sensor, a low-pressure sensor, a high-pressure sensor, a pure water quality meter, a pure water flow meter, a pure water quality meter, a pure water tank upper floating ball, a middle water tank lower floating ball, a sewage collection tank upper floating ball and a sewage collection tank lower floating ball are respectively connected with the controller through signal control lines, and the PLC controls the air inlet electromagnetic valve, the exhaust electromagnetic valve, the supply pump, the circulating pump, the sewage discharge pump, the high-pressure pump and the delivery pump to work.
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| CN201921079915.0U CN210313770U (en) | 2019-07-11 | 2019-07-11 | Surgical instrument and surgical linen cleaning wastewater treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110204080A (en) * | 2019-07-11 | 2019-09-06 | 南京慧城水处理设备有限公司 | Surgical instrument and operation cloth grass clean waste water treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110204080A (en) * | 2019-07-11 | 2019-09-06 | 南京慧城水处理设备有限公司 | Surgical instrument and operation cloth grass clean waste water treatment system |
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