CN214735194U - Medical sewage treatment device - Google Patents
Medical sewage treatment device Download PDFInfo
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- CN214735194U CN214735194U CN202120321783.9U CN202120321783U CN214735194U CN 214735194 U CN214735194 U CN 214735194U CN 202120321783 U CN202120321783 U CN 202120321783U CN 214735194 U CN214735194 U CN 214735194U
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Abstract
The utility model belongs to the technical field of sewage treatment, in particular to medical sewage treatment device. Comprises a box body, an aerobic treatment area and a hydrolytic acidification area which are separated by a perforated clapboard in the box body; the hydrolysis acidification area is arranged below the perforated partition plate, a water distributor is arranged in the hydrolysis acidification area, and the water distributor is connected with a water inlet system; the aerobic treatment zone is positioned above the perforated partition plate; an aeration membrane component is arranged in the aerobic treatment area and is connected with an air supply system. The utility model is suitable for a sewage treatment of small-size medical health mechanism, the energy consumption is low, the treatment effect is good.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, in particular to medical sewage treatment device.
Background
The medical sewage refers to diagnosis, treatment, life and fecal sewage discharged from outpatients, wards, operating rooms, various inspection rooms, pathological anatomy rooms, radiation rooms, laundry rooms, Taiping rooms and the like of medical institutions. When other sewage in the medical institution is mixed with the above sewage and discharged, the sewage is uniformly regarded as medical sewage. Medical sewage is more complex in composition than general sewage due to various sources. The sewage contains pathogenic microorganisms andhard-to-degrade toxic and harmful substances such as diagnosis and treatment medicines, disinfectant, organic solvent and the like. The sewage production amount of the existing small-sized medical institution is small, the operation capability is weak, the positions are dispersed, and the adopted medical sewage treatment device has the treatment process flow of 'hydrolytic acidification + aerobic treatment'. The hydrolysis acidification process is mainly used for improving the biodegradability of medical sewage, and the aerobic treatment is mainly used for degrading COD of sewageCr、NH3-N, etc. The aerobic treatment mainly comprises processes such as an activated sludge method, a biofilm method and the like, mechanical aeration is adopted, the oxygen utilization rate is low, and the excellent sewage treatment effect is difficult to achieve.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a medical sewage treatment device, which is suitable for sewage treatment of small medical and health institutions, and has low energy consumption and excellent treatment effect.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a medical sewage treatment device comprises a box body, an aerobic treatment area and a hydrolytic acidification area, wherein the aerobic treatment area and the hydrolytic acidification area are separated from the box body by a perforated partition plate;
the hydrolysis acidification area is arranged below the perforated partition plate, a water distributor is arranged in the hydrolysis acidification area, and the water distributor is connected with a water inlet system;
the aerobic treatment zone is positioned above the perforated partition plate; an aeration membrane component is arranged in the aerobic treatment area and is connected with an air supply system.
The aeration membrane component comprises a plurality of groups of aeration membrane pipes which are arranged along the vertical direction, the upper end of each aeration membrane pipe is connected with the gas supply system, the lower end of each aeration membrane pipe is connected with the exhaust pipeline, and the exhaust pipeline is provided with a pressure release valve.
The aeration membrane tube adopts a silica gel membrane tube.
The air supply system comprises an air blower, a pressure gauge, an electromagnetic valve and an air supply pipeline, wherein one end of the air supply pipeline is connected with the air blower, and the other end of the air supply pipeline is communicated with each aeration membrane pipe through a plurality of branch pipelines; the pressure gauge and the electromagnetic valve are arranged on the air supply pipeline.
A stirrer is arranged in the aerobic treatment area and is arranged on the inner wall of the box body.
The top of the aerobic treatment area is provided with a water collecting tank with an annular structure, and the water collecting tank is connected to the inner wall of the box body and is communicated with a water outlet pipe arranged at the top of the box body; and the top of the box body is provided with an ultraviolet disinfection lamp corresponding to the water collecting tank.
The water collecting tank comprises an effluent weir positioned on the inner side, and the treated water in the aerobic treatment zone flows over the effluent weir and enters the water collecting tank.
The upper part of the hydrolysis acidification zone is provided with a three-phase separator, and the bottom of the hydrolysis acidification zone is provided with a sewage discharge device.
An upper manhole and a lower manhole are arranged on the side wall of the box body, and the upper manhole is positioned in the aerobic treatment area; the lower manhole is positioned in the hydrolysis acidification zone.
The medical sewage treatment device further comprises a circulating system, the circulating system comprises a return pipe and a circulating pump, the upper end of the return pipe is communicated with the aerobic treatment area, the lower end of the return pipe is communicated with the water distributor, and the circulating pump is arranged on the return pipe.
The utility model has the advantages and beneficial effects that:
compared with the prior art, the utility model discloses at least, following advantage has:
1. the medical sewage treatment device provided by the utility model has low operation energy consumption, and compared with other devices, the energy consumption of the devices can be reduced by 11-26% under the premise of the same water treatment amount.
2. The utility model discloses sewage treatment is effectual. The COD of the equipment is improved due to the improved hydrolytic acidification effect and the same water treatment amountCrThe removal rate can be improved by 3-5%.
3. The utility model provides a medical sewage treatment device is vertical equipment, and area is little.
Drawings
Fig. 1 is a schematic structural view of the medical sewage treatment device of the present invention.
In the figure: the device comprises a water inlet pipe 1, a water inlet pump 2, a water distributor 3, a three-phase separator 4, a perforated partition plate 5, an aeration membrane assembly 6, an air blower 7, a pressure gauge 8, a solenoid valve 9, a pressure release valve 10, a stirrer 11, a reflux pipe 12, a circulating pump 13, a water outlet weir 14, an ultraviolet disinfection lamp 15, a water outlet pipe 16, a sludge discharge pipe 17, a sludge discharge pump 18, an upper manhole 19, a lower manhole 20 and a box body 21.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the utility model provides a medical sewage treatment device, which comprises a box body 21, an aerobic treatment area and a hydrolysis acidification area which are separated by a perforated clapboard 5 in the box body 21; the hydrolysis acidification area is arranged below the perforated partition plate 5, a water distributor 3 is arranged in the hydrolysis acidification area, and the water distributor 3 is connected with a water inlet system; the aerobic treatment zone is positioned above the perforated clapboard 5; an aeration membrane component 6 is arranged in the aerobic treatment area, and the aeration membrane component 6 is connected with an air supply system.
The embodiment of the utility model provides an in, aeration membrane subassembly 6 includes that the aeration membrane pipe that the multiunit laid along vertical direction, and the upper end of each aeration membrane pipe all is connected with gas supply system, and the lower extreme is connected with exhaust pipe, is equipped with relief valve 10 on the exhaust pipe. Specifically, the aeration membrane tube adopts a silica gel membrane tube.
In the embodiment of the utility model, the air supply system comprises an air blower 7, a pressure gauge 8, a solenoid valve 9 and an air supply pipeline, wherein one end of the air supply pipeline is connected with the air blower 7, and the other end is communicated with each aeration membrane tube through a plurality of branch pipelines; the pressure gauge 8 and the electromagnetic valve 9 are arranged on the air supply pipeline. The air blower 7 delivers air to the aeration membrane assembly 6, the air pressure in the aeration membrane assembly 6 is adjusted through a pressure gauge 8 and an electromagnetic valve 9, and redundant air is discharged through a pressure release valve 10.
Further, a stirrer 11 is arranged in the aerobic treatment zone, and the stirrer 11 is arranged on the inner wall of the box body 21. The stirrer 11 is used for making the sewage fully contact with the surface of the aeration membrane component 6 so as to avoid the flow break of the sewage.
Furthermore, the top of the aerobic treatment zone is provided with a water collecting tank with an annular structure, and the water collecting tank is connected to the inner wall of the box body 21 and is communicated with a water outlet pipe 16 arranged at the top of the box body 21; the top of the box body 21 is provided with an ultraviolet disinfection lamp 15 corresponding to the water collecting tank.
In the embodiment of the present invention, the water collecting tank includes the inner water outlet weir 14, and the treated water in the aerobic treatment zone flows over the water outlet weir 14 and enters the water collecting tank.
Further, the upper part of the hydrolysis acidification zone is provided with a three-phase separator 4, and the bottom is provided with a sewage discharge device. The three-phase separator 4 is used for separating sewage, activated sludge and bubbles attached to the surface of the activated sludge, the activated sludge sinks after passing through the three-phase separator 4, and the sewage and the bubbles enter an aerobic treatment area on the upper layer of the device through the perforated partition plate 5. The sewage discharging device comprises a sludge discharging pipe 17 and a sludge discharging pump 18, one end of the sludge discharging pipe 17 is positioned below the separator 4, the other end of the sludge discharging pipe penetrates out of the box body 21, and the sludge discharging pump 18 is arranged on the sludge discharging pipe 17.
Furthermore, an upper manhole 19 and a lower manhole 20 are arranged on the side wall of the box body 21, and the upper manhole 19 is positioned in the aerobic treatment area; the lower manhole 20 is positioned in the hydrolysis acidification zone, which is convenient for maintenance and repair of the aerobic treatment zone and the hydrolysis acidification zone.
The embodiment of the utility model provides an in, water inlet system includes inlet tube 1 and intake pump 2, wherein inlet tube 1 and water-locator 3 intercommunication, and intake pump 2 sets up on inlet tube 1, makes sewage evenly get into hydrolysis-acidification district.
On the basis of the embodiment, the utility model provides a medical sewage treatment device still includes the circulation system, and the circulation system includes back flow 12 and circulating pump 13, and wherein the upper end and the good oxygen treatment zone intercommunication of back flow 12, lower extreme and water-locator 3 intercommunication, circulating pump 13 set up on back flow 12. The device reflows part of the sewage after aerobic treatment to the hydrolysis acidification area, and can utilize NO in the reflowing liquid3 --N or NO2 -N improves the hydrolysis acidification effect of the sewage and is beneficial to improving the removal rate of the device to pollutants.
The biochemical treatment process of the utility model adopts membrane-aerated bioreactor (MABR) technology. The technology has high aeration mass transfer efficiency which is 5 to 7 times of that of the traditional aeration, can improve the oxygen utilization rate of the device and realize the purpose of reducing energy consumption.
The working principle of the aeration membrane component 6 is as follows: membrane-aerated bioreactor (MABR) is a product of the combination of membrane technology and biofilm technology, which supplies oxygen through a gas permeable membrane, and under the condition of keeping the gas partial pressure lower than the bubble point, the oxygen in the membrane lumen passes through the micropores on the membrane wall and enters the outside of the lumen, thus realizing bubble-free aeration. The bubble-free aeration has high mass transfer efficiency, and the oxygen utilization rate can approach 100 percent, which is 5 to 7 times of that of the traditional aeration. The membrane material of the MABR can be used as a carrier, a microbial membrane can be formed on the membrane surface, oxygen from the inner side of the membrane lumen diffuses from the inside of the biological membrane to the outside, and substrates from sewage diffuse from the surface of the biological membrane to the inside. Because of the anisotropic mass transfer of oxygen and a substrate, the microbial membrane on the membrane component generates an obvious layered structure which is respectively an aerobic layer, a facultative layer and an anaerobic layer from inside to outside. The microbial membrane in the MABR is functionally layered, so that the microbial membrane can independently complete the oxidation and synchronous nitrification-denitrification reactions of organic pollutants in sewage. Thus. Biological denitrification is carried out in the aerobic treatment zone by means of a biological film attached to the aeration film pipe; and therefore the energy consumption is lower.
The utility model discloses a theory of operation is:
the utility model discloses a vertical equipment, area is little. The aerobic treatment area and the hydrolysis acidification area are vertically arranged, the aerobic treatment area adopts a membrane aeration membrane component to supply oxygen, part of the sewage after aerobic treatment is conveyed to the hydrolysis acidification area at the lower layer of the device by a circulating pump 13 through a return pipe 12, and part of the sewage enters a water collecting tank through a water outlet weir 14. The top of the water collecting tank is provided with an ultraviolet disinfection lamp 15, and the sewage is discharged out of the device through a water outlet pipe 16 after being subjected to ultraviolet disinfection. Residual sludge in the hydrolysis acidification zone at the lower layer of the device is discharged from a sludge discharge pipe 17 through a sludge discharge pump 18 at regular time. The mud pipe 17 may also be used as a blow-down pipe for the installation, the manhole being accessible for service by a technician.
Examples
The water quality index of the pretreated medical sewage of a certain health hospital is as follows: CODCr：150-172mg/L，BOD5：95-123mg/L，NH3-N: 28-37mg/L, fecal coliform number: is more than 25000 MPN/L.
The sludge concentration of the hydrolysis acidification zone at the lower layer of the device is 6000mg/L, and the hydraulic retention time of the sewage at the lower layer of the device is 2 h. In the upper aerobic treatment zone of the device, the aeration membrane component 6 is a silica gel membrane tube, the inner diameter of the membrane is 3mm, the outer diameter of the membrane is 5mm, and the pressure in the membrane is controlled to be about 0.06-0.08 MPa. The hydraulic retention time of the sewage in the upper aerobic treatment area of the device is 5.5 h. The sewage reflux ratio is 100% (i.e. the amount of water returning to the inlet pipe 1 through the reflux pipe 12 is 1 time of the amount of inlet water). The ascending flow velocity of the sewage in the device is 1.0 m/h.
In the hydrolytic acidification zone, NO in the reflux3 --N or NO2 -N is capable of increasing ORP (oxidation reduction potential) of sewage and promoting improvement of biodegradability of sewage. NO3 --N or NO2 -N is reduced to N by activated sludge through biological denitrification2. After passing through the three-phase separator 4, the activated sludge sinks back to the hydrolysis acidification zone, and the sewage enters the aerobic treatment zone through the perforated partition plate 5.
In the aerobic treatment zone, organic pollutants (COD) in the sewageCr、BOD5) And ammonia Nitrogen (NH)3-N) is degraded by aerobic layer microbial membrane on the surface of the aeration membrane component 6, ammonia nitrogen is oxidized into NO3 --N or NO2 --N, oxidation of organic contaminants to H2O and CO2。NO3 --N or NO2 -N utilization of organic pollutants (COD) in wastewater by anoxic layer microbial membranesCr、BOD5) Reduction to N2And finally removed from the wastewater. The treated sewage is discharged after being subjected to ultraviolet disinfection in the water collecting tank.
After the device stably operates, the effluent index is CODCr：＜42mg/L，BOD5：＜12mg/L，NH3-N: less than 3.0mg/L, fecal coliform count: < 300 MPN/L. The effluent quality meets the discharge standard of medical institution Water pollutant discharge Standard (GB 18466-.
The utility model provides aThe medical sewage treatment device has low operation energy consumption, and compared with other equipment, the equipment energy consumption can be reduced by 11-26% on the premise of treating the same water quantity; good sewage treatment effect, improves the hydrolytic acidification effect and treats COD of equipment under the premise of the same water quantityCrThe removal rate can be improved by 3-5%.
The above description is only for the embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.
Claims (10)
1. A medical sewage treatment device is characterized by comprising a box body (21), and an aerobic treatment area and a hydrolytic acidification area which are separated by a perforated clapboard (5) in the box body (21);
the hydrolysis acidification area is arranged below the perforated partition plate (5), a water distributor (3) is arranged in the hydrolysis acidification area, and the water distributor (3) is connected with a water inlet system;
the aerobic treatment zone is positioned above the perforated partition plate (5); an aeration membrane component (6) is arranged in the aerobic treatment area, and the aeration membrane component (6) is connected with an air supply system.
2. The medical sewage treatment device according to claim 1, wherein the aeration membrane module (6) comprises a plurality of groups of aeration membrane tubes arranged along the vertical direction, the upper end of each aeration membrane tube is connected with the gas supply system, the lower end of each aeration membrane tube is connected with a gas exhaust pipeline, and a pressure release valve (10) is arranged on the gas exhaust pipeline.
3. The medical sewage treatment device according to claim 2, wherein the aeration membrane tube is a silica gel membrane tube.
4. The medical sewage treatment device according to claim 2, wherein the air supply system comprises a blower (7), a pressure gauge (8), a solenoid valve (9) and an air supply line, wherein one end of the air supply line is connected to the blower (7), and the other end is communicated with each aeration membrane tube through a plurality of branch lines; the pressure gauge (8) and the electromagnetic valve (9) are arranged on the air supply pipeline.
5. The medical wastewater treatment apparatus according to claim 1, wherein an agitator (11) is provided in the aerobic treatment zone, and the agitator (11) is provided on an inner wall of the tank (21).
6. The medical sewage treatment device according to claim 1, wherein a water collecting tank with an annular structure is arranged at the top of the aerobic treatment zone, is connected to the inner wall of the tank body (21), and is communicated with a water outlet pipe (16) arranged at the top of the tank body (21); the top of the box body (21) is provided with an ultraviolet disinfection lamp (15) corresponding to the water collecting tank.
7. The medical wastewater treatment apparatus according to claim 6, wherein the water collection tank includes an effluent weir (14) on an inner side, and the treated water in the aerobic treatment zone flows over the effluent weir (14) into the water collection tank.
8. The medical wastewater treatment plant according to claim 1, wherein the hydrolysis acidification zone is provided with a three-phase separator (4) at the upper part and a sewage drain at the bottom part.
9. The medical wastewater treatment device according to claim 1, wherein the side wall of the tank body (21) is provided with an upper manhole (19) and a lower manhole (20), and the upper manhole (19) is located in the aerobic treatment zone; the lower manhole (20) is positioned in the hydrolysis acidification zone.
10. The medical wastewater treatment apparatus according to any of claims 1 to 9, further comprising a circulation system comprising a return pipe (12) and a circulation pump (13), wherein the return pipe (12) is connected to the aerobic treatment zone at an upper end thereof and to the water distributor (3) at a lower end thereof, and the circulation pump (13) is disposed on the return pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120321783.9U CN214735194U (en) | 2021-02-03 | 2021-02-03 | Medical sewage treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120321783.9U CN214735194U (en) | 2021-02-03 | 2021-02-03 | Medical sewage treatment device |
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| CN214735194U true CN214735194U (en) | 2021-11-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115403149A (en) * | 2022-09-20 | 2022-11-29 | 中建生态环境集团有限公司 | Biological synchronous nitrification and denitrification reactor for sewage treatment |
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2021
- 2021-02-03 CN CN202120321783.9U patent/CN214735194U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115403149A (en) * | 2022-09-20 | 2022-11-29 | 中建生态环境集团有限公司 | Biological synchronous nitrification and denitrification reactor for sewage treatment |
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