Medical sewage comprehensive treatment system

Abstract

The utility model discloses a medical sewage comprehensive treatment system, including the floating object collection and depositing pool, flocculator, primary chemical disinfection pool, activated carbon adsorption device and depth comprehensive disinfection pool from left to right arrangement in proper order. The utility model principle science, first will float and suspended matter and collect, heavy impurity sinks into the pool bottom, then join flocculating agent and make float flocculation and deposit, then add sodium hypochlorite solution to sewage and carry out primary disinfection and sterilization, then adopt activated carbon to the pollutant, heavy metal ion etc. in sewage and carry out adsorption treatment, then carry out ultraviolet ray sterilization and disinfection, last in the sewage and pass in ozone gas and carry out depth treatment. The utility model is the system of on -line uninterrupted treatment medical wastewater, all -round, multiple processing mode comprehensive use, and the processing effect and efficiency greatly promote, make the harmful material content of medical sewage greatly reduce, can also avoid the secondary pollution produced after processing simultaneously.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically relating to a comprehensive medical wastewater treatment system. Background Technology

[0002] Wastewater discharged from hospital examination rooms, laboratories, wards, laundry rooms, and operating rooms contains large amounts of pathogenic bacteria, viruses, and chemical agents, posing a strong risk of pollution and infection. Currently, medical wastewater is primarily treated by collecting it in treatment ponds for sedimentation and disinfection, with liquid chlorine being a commonly used disinfectant. However, this method is prone to incomplete disinfection and has low efficiency. Furthermore, secondary pollution is easily generated after disinfection, causing the discharged wastewater to fail to meet discharge standards. This method of treating medical wastewater is relatively simple, and its treatment effect is naturally poor. Therefore, there is an urgent need for a comprehensive treatment system to treat medical wastewater in a thorough and comprehensive manner. Utility Model Content

[0003] The purpose of this invention is to provide a comprehensive medical wastewater treatment system that can process wastewater online without interruption, has high processing efficiency, and good treatment effect.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a medical wastewater comprehensive treatment system, comprising, from left to right, a floating matter collection and sedimentation tank, a flocculation tank, a primary chemical disinfection tank, an activated carbon adsorption device, and a deep comprehensive disinfection tank; A first elongated water passage is provided on the upper part of the pool wall between the floating matter collection and sedimentation tank and the flocculation tank. A first filter screen is provided at the left end of the first elongated water passage. A second elongated water passage is provided on the upper part of the pool wall between the flocculation tank and the primary chemical disinfection tank. A second filter screen is provided at the left end of the second elongated water passage. A flocculant solution addition pipe is provided in the first elongated water passage, and a sodium hypochlorite solution addition pipe is provided in the second elongated water passage. The water absorption end of the activated carbon adsorption device extends into the primary chemical disinfection tank, while the water outlet end of the activated carbon adsorption device is located on the top left side of the deep comprehensive disinfection tank.

[0005] The length of the first and second water passages is along the front-to-back direction, and the bottom surfaces of both the first and second water passages are inclined with the left side higher than the right side. The flocculant solution addition pipe is set at the top of the first water passage in the front-to-back direction. One end of the flocculant solution addition pipe is sealed and adjacent to the front or rear end of the first water passage. The other end of the flocculant solution addition pipe passes through the pool wall and is connected to a flocculant pump. Several downward spraying nozzles are evenly arranged at the bottom of the flocculant solution addition pipe in the first water passage. The sodium hypochlorite solution addition tube is installed at the top of the second water passage along the front-to-back direction. One end of the sodium hypochlorite solution addition tube is sealed and located near the front or rear end of the second water passage. The other end of the sodium hypochlorite solution addition tube extends out of the pool wall and is connected to a sodium hypochlorite solution pump. Several downward-spraying second nozzles are evenly arranged at the bottom of the sodium hypochlorite solution addition tube inside the second water passage.

[0006] The activated carbon adsorption device includes a suction pump, a suction pipe, a water supply pipe, a drain pipe, an upper adsorption filter, and a lower adsorption filter. The inlet of the suction pump is connected to the outlet of the suction pipe. The inlet of the suction pipe extends into the primary chemical disinfection tank and is equipped with a filter cage. The outlet of the suction pump is connected to the inlet of the water supply pipe. The inlets of both the upper and lower adsorption filters are connected to the outlets of the water supply pipe. The outlets of both the upper and lower adsorption filters are connected to the inlet of the drain pipe. The outlet of the drain pipe is located on the upper left side of the deep comprehensive disinfection tank.

[0007] The filter cage is cylindrical in shape, with a round hole at the top. An internally threaded sleeve is installed and welded into the round hole. The outer circle of the suction pipe inlet extends into and is threaded into the internally threaded sleeve.

[0008] The upper and lower adsorption filters have identical structures and are arranged symmetrically. Both filters include a left parallel main pipe, a left parallel inlet pipe, a right parallel inlet pipe, a right parallel main pipe, and at least two parallel branch pipes. The left and right parallel main pipes are vertically arranged, all parallel branch pipes are horizontally arranged, and the left and right parallel inlet pipes are horizontally arranged. One port of the left parallel main pipe is connected to the water outlet, and the other port of the left parallel main pipe is connected to the bottom middle of the left parallel inlet pipe. The front and rear ports of the left and right parallel inlet pipes are sealed. The left end of all parallel branch pipes is connected to the right side of the left parallel inlet pipe, and the right end of all parallel branch pipes is connected to the left side of the right parallel inlet pipe. One port of the right parallel main pipe is connected to the drain inlet, and the other port of the right parallel main pipe is connected to the bottom middle of the right parallel inlet pipe. A section of activated carbon installation pipe is connected to each parallel branch pipe by flange bolts. The left parallel main pipe is equipped with a first valve, and the right parallel main pipe is equipped with a second valve.

[0009] The activated carbon installation pipe is equipped with a first flange at both the left and right ends, and the parallel branch pipe is equipped with a second flange at both the left and right sides of the disconnected part. The first flange on the left side is connected to the second flange on the left side by bolts, and the first flange on the right side is connected to the second flange on the right side by bolts. The mating ring surfaces of the first flange and the second flange are equipped with sealing rings. A cylindrical filter screen is coaxially installed inside the activated carbon installation tube. The outer diameter of the cylindrical filter screen is equal to the inner diameter of the activated carbon installation tube. The cylindrical filter screen is filled with activated carbon. A limiting ring is provided on the inner circle of the right end of the activated carbon installation tube to axially limit the position of the cylindrical filter screen. The inner diameter of the limiting ring is smaller than the outer diameter of the cylindrical filter screen.

[0010] The deep integrated disinfection pool includes a pool body with a cover plate on the top. The cover plate has an exhaust port and a perforation for a drain pipe to pass through on the left side. A partition plate is horizontally installed on the upper part of the inner side of the pool body, which divides the interior of the pool body into an upper ultraviolet sterilization chamber and a lower ozone disinfection chamber. Several ultraviolet lamps are installed between the front and rear walls of the pool body, located in the ultraviolet sterilization chamber. All ultraviolet lamps are evenly spaced in the left-right direction. The right side of the partition has a long, open hole that runs vertically, with the length of the hole extending along the front-to-back direction. The bottom of the ozone disinfection chamber is covered with a hollow air distribution plate, and several one-way valves are evenly distributed on the top of the air distribution plate. An ozone generator and an ozone supply pump are located on the left side of the tank. The outlet of the ozone generator is connected to the inlet of the ozone supply pump. The outlet of the ozone supply pump is connected to the inner cavity of the air distribution plate through an ozone supply pipe that passes through the side wall of the tank. A third valve is installed on the ozone supply pipe. A water outlet pipe is located at the bottom of the tank, and a water outlet valve is installed on the water outlet pipe.

[0011] By adopting the above technical solution, this utility model has the following technical effects: (1) Medical wastewater from various departments of the hospital first flows into the floating matter collection and sedimentation tank. In the floating matter collection and sedimentation tank, floating matter (drug residue fragments, colloidal particles, plastic bottles and other light floating objects) and suspended matter (gauze fragments, etc.) on the surface of the liquid are scooped up and collected. The heavier debris and impurities settle to the bottom of the tank. Floating matter or suspended matter is blocked and retained in the floating matter collection and sedimentation tank by the first filter screen. The sewage flows into the flocculation tank through the first filter screen and the first water passage, so that the sewage in the flocculation tank no longer has floating matter and large particulate sediment.

[0012] (2) A flocculant solution addition pipe is installed in the first water inlet. As the wastewater flows into the flocculation tank through the first water inlet, the flocculant pump sprays the flocculant solution evenly into the flowing wastewater through several first nozzles. This eliminates the need for a stirring device in the flocculation tank, improving the flocculation effect and efficiency. The flocculant can be polyacrylamide (PAM) or polyaluminum chloride (PAC), which can more effectively combine with pollutants in the wastewater to form larger flocs, helping to remove suspended solids, organic matter, and color from the wastewater.

[0013] (3) A sodium hypochlorite solution addition pipe is installed in the second water passage. During the process of the flocculated and precipitated sewage flowing into the primary chemical disinfection tank through the second water passage, the sodium hypochlorite solution pump sprays the sodium hypochlorite solution evenly into the flowing sewage through several second nozzles. There is no need to install a stirring device in the primary chemical disinfection tank, which improves the mixing effect and efficiency of sodium hypochlorite solution and sewage, thereby improving the disinfection and sterilization effect of sodium hypochlorite solution on sewage (sodium hypochlorite decomposes to produce hypochlorous acid, which can effectively kill bacteria, viruses and parasite eggs), odor removal (oxidizes and decomposes hydrogen sulfide, ammonia and other odor substances to improve the odor of sewage), and auxiliary oxidation (decomposes some organic pollutants and reduces chemical oxygen demand).

[0014] (4) After the wastewater is subjected to primary chemical disinfection treatment, the pump of the activated carbon adsorption device draws the wastewater in the primary chemical disinfection tank out through the filter cage and then the activated carbon adsorbs the organic pollutants (including benzene, phenols, petroleum hydrocarbons, etc.), heavy metal ions (copper, zinc, chromium, etc.) and odor substances (hydrogen sulfide, ammonia nitrogen, etc.) in the wastewater.

[0015] A filter cage is installed to increase the contact area with the wastewater. Although the mesh size of the filter cage is small, it still ensures sufficient suction capacity of the wastewater. The filter cage is fixedly connected to an internally threaded sleeve, which is threadedly connected to the suction pipe, facilitating easy assembly and disassembly, and allowing for height adjustment.

[0016] The upper and lower adsorption filters are connected in parallel, with one filter operating while the other is being maintained or replaced, ensuring uninterrupted activated carbon adsorption. Multiple activated carbon mounting pipes are installed on parallel branch pipes for both filters, increasing the cross-sectional area for wastewater flow. This minimizes impact on wastewater flow rate while improving adsorption efficiency and effectiveness. After the activated carbon mounting pipes of either the upper or lower filter have been operating for a period, the opening and closing of the first and second valves at the top and bottom are switched. The activated carbon mounting pipe that has adsorbed a significant amount of dirt and impurities is disassembled, the cylindrical filter screen is removed, and replaced with a new cylindrical filter screen containing fresh activated carbon. Because a limiting ring is installed on the inner wall of the right-side port of the activated carbon mounting pipe to prevent the water flow from pushing against the cylindrical filter screen and to limit its axial position, it is crucial to ensure that the limiting ring is located on the right side when installing the activated carbon mounting pipe.

[0017] (5) After activated carbon adsorption, the wastewater is injected into the ultraviolet sterilization chamber at the top of the deep integrated disinfection tank through the drain pipe. The wastewater spreads in a layer on the partition and flows slowly to the right. During this process, the ultraviolet light generated by several ultraviolet lamps arranged at intervals on the left and right deeply destroys the DNA structure of bacteria and viruses, causing them to lose their reproductive ability and significantly reducing the pathogen load. After ultraviolet sterilization, the wastewater falls into the ozone disinfection chamber through the long hole on the right side of the partition. The ozone gas generated by the ozone generator is transported to the air distribution plate through the ozone supply pipe by the ozone supply pump. Finally, it is blown into the wastewater in the ozone disinfection chamber through the one-way valve on the top surface of the air distribution plate. The ozone gas deeply disinfects the wastewater from bottom to top. The treatment process includes sterilization and disinfection (ozone's strong oxidizing properties can destroy the cell structure of bacteria, viruses, and fungi, effectively killing pathogenic microorganisms in wastewater. Its sterilization effect is 600-3000 times that of chlorine, and it can quickly kill viruses and spores that are resistant to chlorine, ensuring that the treated wastewater meets safety discharge standards), water quality improvement (ozone decomposes to produce oxygen and a small amount of hydroxyl radicals, which can remove odors, color, and pollutants such as phenols and chlorine from wastewater, while increasing dissolved oxygen in the water and improving water transparency and sensory indicators), degradation of organic matter (ozone can decompose recalcitrant large molecular organic matter (such as carcinogenic, mutagenic, and teratogenic substances) in wastewater, enhancing the biochemical properties of wastewater and reducing the difficulty of subsequent treatment), and decolorization and deodorization (removing natural pigments and odor substances (such as ammonia) from wastewater). The deeply treated ozone enters the ultraviolet sterilization chamber through elongated holes. Moving from right to left within the ultraviolet sterilization chamber, it also has a certain treatment effect on the wastewater on the baffle. Finally, it is discharged through the exhaust port on the cover, which can be connected to a collection pipe to collect the gas for centralized treatment. The water discharged from the outlet pipe at the lower right side of the deep disinfection pool is tested, and can be discharged after passing the test.

[0018] In summary, this invention is based on sound principles. First, floating and suspended solids are scooped up and collected, while heavier impurities sink to the bottom. Then, a flocculant is added to cause the floating solids to flocculate and settle. Next, sodium hypochlorite solution is added to the wastewater for primary disinfection. Then, activated carbon is used to adsorb pollutants and heavy metal ions in the wastewater. Following this, ultraviolet light is used for disinfection. Finally, ozone gas is introduced into the wastewater for further treatment. This invention is an online, uninterrupted system for treating medical wastewater. It comprehensively utilizes multiple treatment methods, significantly improving treatment effectiveness and efficiency, greatly reducing the content of harmful substances in medical wastewater, and preventing secondary pollution after treatment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 Enlarged view of section A in the middle; Figure 3 for Figure 1 Enlarged view of section B; Figure 4 for Figure 1 Magnified view of the activated carbon adsorption device; Figure 5 for Figure 4 Top view of multiple activated carbon mounting tubes in the upper adsorption filter; Figure 6 yes Figure 5 A schematic diagram of the internal structure of a single activated carbon mounting tube. Figure 7 yes Figure 1 Enlarged view of the medium-depth integrated disinfection pool. Detailed Implementation

[0020] like Figures 1-7 As shown, the medical wastewater comprehensive treatment system of this utility model includes, from left to right, a floating matter collection and sedimentation tank 1, a flocculation tank 2, a primary chemical disinfection tank 3, an activated carbon adsorption device 4, and a deep comprehensive disinfection tank 5. A first long water passage 6 is provided on the upper part of the pool wall between the floating matter collection and sedimentation tank 1 and the flocculation tank 2. A first filter screen 7 is provided at the left end of the first long water passage 6. A second long water passage 8 is provided on the upper part of the pool wall between the flocculation tank 2 and the primary chemical disinfection tank 3. A second filter screen 9 is provided at the left end of the second long water passage 8. A flocculant solution addition pipe 10 is provided in the first long water passage 6, and a sodium hypochlorite solution addition pipe 11 is provided in the second long water passage 8. The water absorption end of the activated carbon adsorption device 4 extends into the primary chemical disinfection tank 3, and the water outlet end of the activated carbon adsorption device 4 is located on the top left side of the deep comprehensive disinfection tank 5.

[0021] The length of the first water passage 6 and the second water passage 8 is along the front-to-back direction, and the bottom surfaces of the first water passage 6 and the second water passage 8 are both inclined with the left side higher than the right side. The flocculant solution addition pipe 10 is set at the top of the first water passage 6 along the front-to-back direction. One end of the flocculant solution addition pipe 10 is sealed and adjacent to the front or rear end of the first water passage 6. The other end of the flocculant solution addition pipe 10 passes through the pool wall and is connected to a flocculant pump (not shown in the figure). Several downward spraying first nozzles 12 are evenly arranged at the bottom of the flocculant solution addition pipe 10 in the first water passage 6. Sodium hypochlorite solution addition tube 11 is installed at the top of the second water passage 8 along the front-to-back direction. One end of the sodium hypochlorite solution addition tube 11 is sealed and adjacent to the front or rear end of the second water passage 8. The other end of the sodium hypochlorite solution addition tube 11 extends out of the pool wall and is connected to a sodium hypochlorite solution pump (not shown in the figure). Several downward-spraying second nozzles 13 are evenly arranged at the bottom of the sodium hypochlorite solution addition tube 11 inside the second water passage 8.

[0022] The activated carbon adsorption device 4 includes a suction pump 14, a suction pipe 15, a water supply pipe 16, a drain pipe 17, an upper adsorption filter 18, and a lower adsorption filter 19. The inlet of the suction pump 14 is connected to the outlet of the suction pipe 15. The inlet of the suction pipe 15 extends into the primary chemical disinfection tank 3 and is equipped with a filter cage 20. The outlet of the suction pump 14 is connected to the inlet of the water supply pipe 16. The inlets of the upper adsorption filter 18 and the lower adsorption filter 19 are both connected to the outlet of the water supply pipe 16. The outlets of the upper adsorption filter 18 and the lower adsorption filter 19 are both connected to the inlet of the drain pipe 17. The outlet of the drain pipe 17 is located on the upper left side of the deep comprehensive disinfection tank 5.

[0023] The filter cage 20 is cylindrical in shape. A round hole is opened at the top of the filter cage 20. An internally threaded sleeve 21 is installed and welded inside the round hole. The outer circle of the inlet end of the suction pipe 15 extends into and is threadedly connected to the internally threaded sleeve 21.

[0024] The upper adsorption filter 18 and the lower adsorption filter 19 have the same structure and are arranged symmetrically vertically. Both the upper adsorption filter 18 and the lower adsorption filter 19 include a left parallel main pipe 22, a left parallel inlet pipe 23, a right parallel inlet pipe 24, a right parallel main pipe 25, and at least two parallel branch pipes 26. The left parallel main pipe 22 and the right parallel main pipe 25 are both vertically arranged, all the parallel branch pipes 26 are horizontally arranged left and right, and the left parallel inlet pipe 23 and the right parallel inlet pipe 24 are horizontally arranged front and back. One port of the left parallel main pipe 22 is connected to the outlet of the water supply pipe 16, and the other port of the left parallel main pipe 22 is connected to the bottom middle of the left parallel inlet pipe 23. The front and rear ports of the left parallel inlet pipe 23 and the right parallel inlet pipe 24 are sealed. The left end of all parallel branch pipes 26 is connected to the right side of the left parallel inlet pipe 23, and the right end of all parallel branch pipes 26 is connected to the left side of the right parallel inlet pipe 24. One port of the right parallel main pipe 25 is connected to the inlet of the drain pipe 17, and the other port of the right parallel main pipe 25 is connected to the bottom middle of the right parallel inlet pipe 24. An activated carbon installation pipe 27 is connected to all parallel branch pipes 26 by flange bolts. The left parallel main pipe 22 is equipped with a first valve 28, and the right parallel main pipe 25 is equipped with a second valve 29.

[0025] The activated carbon installation pipe 27 is provided with a first flange 30 at both the left and right ends, and the parallel branch pipe 26 is provided with a second flange 31 at both the left and right sides of the disconnected part. The first flange 30 on the left side is connected to the second flange 31 on the left side by bolts, and the first flange 30 on the right side is connected to the second flange 31 on the right side by bolts. The mating ring surfaces of the first flange 30 and the second flange 31 are provided with sealing rings (not shown in the figure). A cylindrical filter screen 32 is coaxially installed inside the activated carbon installation tube 27. The outer diameter of the cylindrical filter screen 32 is equal to the inner diameter of the activated carbon installation tube 27. The cylindrical filter screen 32 is filled with activated carbon 33. A limiting ring 34 is provided on the inner circle of the right end of the activated carbon 33 installation tube 27 to axially limit the position of the cylindrical filter screen 32. The inner diameter of the limiting ring 34 is smaller than the outer diameter of the cylindrical filter screen 32.

[0026] The deep integrated disinfection pool 5 includes a pool body 35. The top of the pool body 35 is provided with a cover plate 36. The left side of the cover plate 36 is provided with an exhaust port 37 and a perforation 38 for passing through the drain pipe 17. A partition plate 39 is horizontally provided on the upper inner side of the pool body 35. The partition plate 39 divides the interior of the pool body 35 into an upper ultraviolet sterilization chamber 40 and a lower ozone disinfection chamber 41. Between the front and rear pool walls of the pool body 35, there are several ultraviolet lamps 42 located in the ultraviolet sterilization chamber 40. All the ultraviolet lamps 42 are evenly spaced in the left and right direction. The partition 39 has a long, open hole 43 on the right side, with the length of the long hole 43 extending along the front-to-back direction. The bottom of the ozone disinfection chamber 41 is flatly covered with a hollow air distribution plate 44. The top of the air distribution plate 44 is evenly provided with several one-way valves 45 (such as the one-way valve for ventilation and water sealing disclosed in patent number CN201220245751). An ozone generator 46 and an ozone supply pump 47 are provided on the left side of the pool body 35. The outlet of the ozone generator 46 is connected to the inlet of the ozone supply pump 47. The outlet of the ozone supply pump 47 is connected to the inner cavity of the air distribution plate 44 through the side wall of the pool body 35 via an ozone supply pipe 48. A third valve 49 is provided on the ozone supply pipe 48. A water outlet pipe 50 is provided at the bottom of the pool body 35. A water outlet valve 51 is provided on the water outlet pipe 50.

[0027] The working principles and corresponding technical effects of each treatment unit of this utility model (floating matter collection and sedimentation tank 1, flocculation tank 2, primary chemical disinfection tank 3, activated carbon adsorption device 4, and deep comprehensive disinfection tank 5) are as follows: (1) Medical wastewater from various departments of the hospital first flows into the floating matter collection and sedimentation tank 1. In the floating matter collection and sedimentation tank 1, floating matter (drug residue fragments, colloidal particles, plastic bottles and other light floating objects) and suspended matter (gauze fragments, etc.) on the liquid surface are scooped up and collected. The heavier debris and impurities settle to the bottom of the tank. Floating or suspended matter is blocked and retained in the floating matter collection and sedimentation tank 1 by the first filter screen 7. The sewage flows into the flocculation tank 2 through the first filter screen 7 and the first water passage 6, so that the sewage in the flocculation tank 2 no longer has floating matter and large particulate sediment.

[0028] (2) A flocculant solution addition pipe 10 is installed in the first water passage hole. During the process of sewage flowing into the flocculation tank 2 through the first water passage hole 6, the flocculant pump sprays the flocculant solution evenly into the flowing sewage through several first nozzles 12. There is no need to install a stirring device in the flocculation tank 2, which improves the flocculation effect and efficiency. The flocculant can be polyacrylamide (PAM) or polyaluminum chloride (PAC), which can more effectively combine with pollutants in sewage to form larger flocs, which helps to remove suspended solids, organic matter and color from wastewater. The distance between the first water passage hole 6 and the second water passage hole 8 is relatively long, which is sufficient time for the sewage to complete flocculation.

[0029] (3) A sodium hypochlorite solution addition pipe 11 is installed in the second water passage 8. During the process of the flocculated and precipitated sewage flowing into the primary chemical disinfection tank 3 through the second water passage 8, the sodium hypochlorite solution pump sprays the sodium hypochlorite solution evenly into the flowing sewage through several second nozzles 13. There is no need to install a stirring device in the primary chemical disinfection tank 3, which improves the mixing effect and efficiency of sodium hypochlorite solution and sewage, thereby improving the disinfection and sterilization effect of sodium hypochlorite solution on sewage (sodium hypochlorite decomposes to produce hypochlorous acid, which can effectively kill bacteria, viruses and parasite eggs), odor removal (oxidizes and decomposes hydrogen sulfide, ammonia and other odor substances to improve the odor of sewage), and auxiliary oxidation (decomposes some organic pollutants and reduces chemical oxygen demand).

[0030] (4) After the wastewater undergoes primary chemical disinfection treatment, the suction pump 14 of the activated carbon 33 adsorption device 4 draws the wastewater from the primary chemical disinfection tank 3 through the filter cage 20. The activated carbon 33 adsorbs organic pollutants (including benzene, phenols, petroleum hydrocarbons, etc.), heavy metal ions (copper, zinc, chromium, etc.), and odor substances (hydrogen sulfide, ammonia nitrogen, etc.) in the wastewater. The filter cage 20 is set up to increase the contact area with the wastewater. Although the mesh of the filter cage 20 is small, it can still ensure the suction volume of the suction pipe 15.

[0031] The upper adsorption filter 18 and the lower adsorption filter 19 are connected in parallel, employing a method where one adsorption filter operates while the other is inspected and replaced, ensuring uninterrupted adsorption by the activated carbon 33. Multiple activated carbon 33 mounting pipes 27 are installed on parallel branch pipes 26 for both the upper and lower adsorption filters 18 and 19, increasing the cross-sectional area for wastewater flow. This minimizes impact on wastewater flow rate while simultaneously improving adsorption efficiency and effectiveness. After the activated carbon 33 mounting pipes 27 of either the upper or lower adsorption filter 18 or 19 have been operating for a period of time, the opening and closing of the first valve 28 and the second valve 29 at the upper and lower ends are switched. The activated carbon 33 mounting pipe 27 that has adsorbed a large amount of dirt and impurities is disassembled, the cylindrical filter screen 32 is removed, and replaced with a new cylindrical filter screen 32 containing new activated carbon 33. Because a limiting ring 34 is provided on the inner wall of the right port of the activated carbon 33 installation pipe 27 to block the thrust generated by the water flow on the cylindrical filter screen 32 and limit the axial position of the cylindrical filter screen 32, it is necessary to ensure that the limiting ring 34 is located on the right side when installing the activated carbon 33 installation pipe 27.

[0032] (5) After adsorption by activated carbon 33, the wastewater is injected into the ultraviolet sterilization chamber 40 at the top of the deep integrated disinfection tank 5 through the drain pipe 17. The wastewater is spread on the partition 39 and flows slowly to the right. During this process, the ultraviolet light generated by several ultraviolet lamps 42 arranged at intervals on the left and right deeply destroys the DNA structure of bacteria and viruses, causing them to lose their reproductive ability and significantly reducing the pathogen load. After ultraviolet sterilization, the wastewater falls into the ozone disinfection chamber 41 through the long hole 43 on the right side of the partition 39. The ozone gas generated by the ozone generator 46 is transported to the air distribution plate 44 through the ozone supply pipe 48 under the action of the ozone supply pump 47. Finally, it is blown into the wastewater in the ozone disinfection chamber 41 through the one-way valve 45 on the top surface of the air distribution plate 44. The ozone gas in the wastewater Deep disinfection of wastewater from bottom to top includes sterilization and disinfection (ozone's strong oxidizing properties can destroy the cell structure of bacteria, viruses, and fungi, effectively killing pathogenic microorganisms in wastewater. Its sterilization effect is 600-3000 times that of chlorine, and it can quickly kill viruses and spores that are resistant to chlorine, ensuring that the treated wastewater meets safe discharge standards), water quality improvement (ozone decomposes to produce oxygen and a small amount of hydroxyl free radicals, which can remove odors, color, and pollutants such as phenols and chlorine from wastewater, while increasing dissolved oxygen in the water body and improving water transparency and sensory indicators), degradation of organic matter (ozone can decompose recalcitrant large molecular organic matter in wastewater (such as carcinogenic, mutagenic, and teratogenic substances), enhance the biochemical properties of wastewater, and reduce the difficulty of subsequent treatment), and decolorization and deodorization (removing natural pigments and odor substances (such as ammonia) from wastewater). After deep treatment, the ozone enters the ultraviolet sterilization chamber 40 through the elongated hole 43. Moving from right to left within the ultraviolet sterilization chamber 40, it also has a certain treatment effect on the wastewater on the partition 39. Finally, it is discharged through the exhaust port 37 on the cover plate 36. The exhaust port 37 can be connected to a collection pipe to collect the gas for centralized treatment. The water discharged from the lower right effluent pipe 50 of the deep integrated disinfection tank 5 is tested, and discharged only after meeting the standards.

[0033] The various pumps, ozone generators, valves, ultraviolet lamps, nozzles, and the activated carbon, flocculants, sodium hypochlorite, and ozone used in this invention are all existing technologies and can be purchased or customized on the market. Therefore, the working principles of these existing devices and materials will not be elaborated further.

[0034] The above embodiments illustrate the basic principles and features of this utility model. However, the above descriptions are merely preferred embodiments and are not limited to these embodiments. Those skilled in the art, inspired by this patent, can make many modifications and improvements without departing from the spirit and scope of the claims, all of which fall within the protection scope of this utility model. Therefore, the patent and its scope of protection should be determined by the appended claims.

Claims

1. A comprehensive medical wastewater treatment system, characterized in that: It includes, from left to right, a floating matter collection and sedimentation tank, a flocculation tank, a primary chemical disinfection tank, an activated carbon adsorption device, and a deep comprehensive disinfection tank. A first elongated water passage is provided on the upper part of the pool wall between the floating matter collection and sedimentation tank and the flocculation tank. A first filter screen is provided at the left end of the first elongated water passage. A second elongated water passage is provided on the upper part of the pool wall between the flocculation tank and the primary chemical disinfection tank. A second filter screen is provided at the left end of the second elongated water passage. A flocculant solution addition pipe is provided in the first elongated water passage, and a sodium hypochlorite solution addition pipe is provided in the second elongated water passage. The water absorption end of the activated carbon adsorption device extends into the primary chemical disinfection tank, while the water outlet end of the activated carbon adsorption device is located on the top left side of the deep comprehensive disinfection tank.

2. The medical wastewater integrated treatment system according to claim 1, characterized in that: The length of the first and second water passages is along the front-to-back direction, and the bottom surfaces of both the first and second water passages are inclined with the left side higher than the right side. The flocculant solution addition pipe is set at the top of the first water passage in the front-to-back direction. One end of the flocculant solution addition pipe is sealed and adjacent to the front or rear end of the first water passage. The other end of the flocculant solution addition pipe passes through the pool wall and is connected to a flocculant pump. Several downward spraying nozzles are evenly arranged at the bottom of the flocculant solution addition pipe in the first water passage. The sodium hypochlorite solution addition tube is installed at the top of the second water passage along the front-to-back direction. One end of the sodium hypochlorite solution addition tube is sealed and located near the front or rear end of the second water passage. The other end of the sodium hypochlorite solution addition tube extends out of the pool wall and is connected to a sodium hypochlorite solution pump. Several downward-spraying second nozzles are evenly arranged at the bottom of the sodium hypochlorite solution addition tube inside the second water passage.

3. The medical wastewater integrated treatment system according to claim 1 or 2, characterized in that: The activated carbon adsorption device includes a suction pump, a suction pipe, a water supply pipe, a drain pipe, an upper adsorption filter, and a lower adsorption filter. The inlet of the suction pump is connected to the outlet of the suction pipe. The inlet of the suction pipe extends into the primary chemical disinfection tank and is equipped with a filter cage. The outlet of the suction pump is connected to the inlet of the water supply pipe. The inlets of both the upper and lower adsorption filters are connected to the outlets of the water supply pipe. The outlets of both the upper and lower adsorption filters are connected to the inlet of the drain pipe. The outlet of the drain pipe is located on the upper left side of the deep comprehensive disinfection tank.

4. The medical wastewater integrated treatment system according to claim 3, characterized in that: The filter cage is cylindrical in shape, with a round hole at the top. An internally threaded sleeve is installed and welded inside the round hole. The outer circle of the suction pipe inlet extends into and is threaded into the internally threaded sleeve.

5. The medical wastewater integrated treatment system according to claim 3, characterized in that: The upper and lower adsorption filters have identical structures and are arranged symmetrically. Both filters include a left parallel main pipe, a left parallel inlet pipe, a right parallel inlet pipe, a right parallel main pipe, and at least two parallel branch pipes. The left and right parallel main pipes are vertically arranged, all parallel branch pipes are horizontally arranged, and the left and right parallel inlet pipes are horizontally arranged. One port of the left parallel main pipe is connected to the water outlet, and the other port of the left parallel main pipe is connected to the bottom middle of the left parallel inlet pipe. The front and rear ports of the left and right parallel inlet pipes are sealed. The left end of all parallel branch pipes is connected to the right side of the left parallel inlet pipe, and the right end of all parallel branch pipes is connected to the left side of the right parallel inlet pipe. One port of the right parallel main pipe is connected to the drain inlet, and the other port of the right parallel main pipe is connected to the bottom middle of the right parallel inlet pipe. A section of activated carbon installation pipe is connected to each parallel branch pipe by flange bolts. The left parallel main pipe is equipped with a first valve, and the right parallel main pipe is equipped with a second valve.

6. The medical wastewater integrated treatment system according to claim 5, characterized in that: The activated carbon installation pipe is equipped with a first flange at both the left and right ends, and the parallel branch pipe is equipped with a second flange at both the left and right sides of the disconnected part. The first flange on the left side is connected to the second flange on the left side by bolts, and the first flange on the right side is connected to the second flange on the right side by bolts. The mating ring surfaces of the first flange and the second flange are equipped with sealing rings. A cylindrical filter screen is coaxially installed inside the activated carbon installation tube. The outer diameter of the cylindrical filter screen is equal to the inner diameter of the activated carbon installation tube. The cylindrical filter screen is filled with activated carbon. A limiting ring is provided on the inner circle of the right end of the activated carbon installation tube to axially limit the position of the cylindrical filter screen. The inner diameter of the limiting ring is smaller than the outer diameter of the cylindrical filter screen.

7. The medical wastewater integrated treatment system according to claim 5, characterized in that: The deep integrated disinfection pool includes a pool body with a cover plate on the top. The cover plate has an exhaust port and a perforation for a drain pipe to pass through on the left side. A partition plate is horizontally installed on the upper part of the inner side of the pool body, which divides the interior of the pool body into an upper ultraviolet sterilization chamber and a lower ozone disinfection chamber. Several ultraviolet lamps are installed between the front and rear walls of the pool body, located in the ultraviolet sterilization chamber. All ultraviolet lamps are evenly spaced in the left-right direction. The right side of the partition has a long, open hole that runs vertically, with the length of the hole extending along the front-to-back direction. The bottom of the ozone disinfection chamber is covered with a hollow air distribution plate, and several one-way valves are evenly distributed on the top of the air distribution plate. An ozone generator and an ozone supply pump are located on the left side of the tank. The outlet of the ozone generator is connected to the inlet of the ozone supply pump. The outlet of the ozone supply pump is connected to the inner cavity of the air distribution plate through an ozone supply pipe that passes through the side wall of the tank. A third valve is installed on the ozone supply pipe. A water outlet pipe is located at the bottom of the tank, and a water outlet valve is installed on the water outlet pipe.

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