CN220449975U - Sewage treatment system for hospital - Google Patents
Sewage treatment system for hospital Download PDFInfo
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- CN220449975U CN220449975U CN202321978277.2U CN202321978277U CN220449975U CN 220449975 U CN220449975 U CN 220449975U CN 202321978277 U CN202321978277 U CN 202321978277U CN 220449975 U CN220449975 U CN 220449975U
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- tank
- water inlet
- sewage
- pond
- water
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- 239000010865 sewage Substances 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 20
- 238000004062 sedimentation Methods 0.000 claims abstract description 15
- 230000003647 oxidation Effects 0.000 claims abstract description 14
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 14
- 239000006228 supernatant Substances 0.000 claims abstract description 5
- 239000010802 sludge Substances 0.000 claims description 34
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 239000000645 desinfectant Substances 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 7
- 238000004065 wastewater treatment Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 13
- 238000000926 separation method Methods 0.000 abstract description 7
- 239000003403 water pollutant Substances 0.000 abstract description 4
- 241000894006 Bacteria Species 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 239000002906 medical waste Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 241001148470 aerobic bacillus Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 239000010840 domestic wastewater Substances 0.000 description 2
- 230000002550 fecal effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000010806 kitchen waste Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 244000052769 pathogen Species 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 208000032420 Latent Infection Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000001651 autotrophic effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 208000037771 disease arising from reactivation of latent virus Diseases 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 231100001234 toxic pollutant Toxicity 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Treatment Of Biological Wastes In General (AREA)
Abstract
The utility model discloses a hospital sewage treatment system which comprises a septic tank for collecting domestic sewage and an oil separation tank for collecting kitchen sewage, wherein water outlets of the septic tank and the oil separation tank are respectively connected with a water inlet of a grating tank, a medical sewage water inlet is further arranged on the grating tank, a water outlet of the grating tank is connected with a water inlet of an adjusting tank, a water outlet of the adjusting tank is connected with a water inlet of an anoxic tank, a water outlet of the anoxic tank is connected with a water inlet of a biological contact oxidation tank, a water outlet of the biological contact oxidation tank is connected with a water inlet of a sedimentation tank, a supernatant outlet of the sedimentation tank is connected with a water inlet of a disinfection tank, and a water outlet of the disinfection tank is connected to a discharge pipe or a discharge canal. The utility model adopts the treatment process mainly comprising anaerobic biochemical treatment, biological contact oxidation and disinfection, and can continuously reach the pre-discharge standard of the medical institution water pollutant discharge standard.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a hospital sewage treatment system.
Background
The hospital waste water is mainly various toxic, harmful and bacteria waste water generated by medical institutions in the operation process, the water quality of the hospital waste water varies with different hospital properties, scales and areas where the hospital waste water is located, the daily sewage amount discharged by each sickbed is about 200-1000L, the hospital waste water is complex in source and components and mainly comprises waste water discharged by medical treatment rooms, sickrooms, pathological anatomy rooms, radiation rooms, X-ray photographic rooms, operating rooms and the like, and also comprises a small amount of domestic waste water, kitchen waste water and the like (the domestic waste water mainly comes from toilet flushing and the like, and the kitchen waste water mainly comes from vegetable washing and cooking). The hospital wastewater contains a large amount of pathogenic bacteria, viruses and chemical agents, and has the characteristics of pollution, acute infection and latent infection; the main pollutants contained in the medical wastewater are as follows: pathogen, organic solvent, acid, alkali, organic matter, floating matter, suspended matter, radioactive pollutant, etc. the total bacteria content in untreated sewage reaches 8-10/mL; hospital wastewater is one of the main sources of toxic risks in water environments, and toxic pollutants enter aquatic ecological balance and drinking water sources to cause potential negative effects. The national environmental protection administration and the national quality and alkalinity inspection and quarantine administration jointly issue a pollutant emission standard of medical institutions (GB 1866-2005) in 7 months 2005, and the standard provides comprehensive control requirements for pollutants such as waste gas, sludge and the like generated by sewage and sewage treatment stations of the medical institutions, and emphasizes the disinfection effect on sewage containing pathogens.
At present, most of the sewage in hospitals in China is directly disinfected and then discharged, only a few hospitals are disinfected after biological treatment, the concentration of suspended matters in the effluent of the existing sewage treatment process is high, and bacteria and viruses can be attached to or wrapped in suspended flocs and are not easy to be inactivated by disinfectants; the existing hospital wastewater treatment is performed under the condition that the organic matters are not removed or the removal efficiency is low, so that the disinfection effect is poor, and a large amount of disinfection byproducts are generated; excess sludge generated by treatment of hospital wastewater contains a large amount of pathogenic microorganisms, and if the treatment is improper, the excess sludge becomes a secondary pollution source. The hospital wastewater treatment process equipment and the hospital wastewater treatment method with the patent number of CN201310283910.0 adopt the process of biological treatment and disinfection treatment, but have the problems of high cost and complex treatment system.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model aims to provide a hospital sewage treatment system with low cost and simple operation, which can continuously reach the pre-discharge standard of the emission standard of water pollutants of medical institutions.
In order to achieve the above object, the utility model provides a hospital sewage treatment system, which comprises a septic tank for collecting domestic sewage and an oil separation tank for collecting kitchen sewage, wherein water outlets of the septic tank and the oil separation tank are respectively connected with a water inlet of a grating tank, a water inlet of medical sewage is further arranged on the grating tank, a water outlet of the grating tank is connected with a water inlet of a regulating tank, a water outlet of the regulating tank is connected with a water inlet of an anoxic tank, a water outlet of the anoxic tank is connected with a water inlet of a biological contact oxidation tank, a water outlet of the biological contact oxidation tank is connected with a water inlet of a sedimentation tank, a supernatant outlet of the sedimentation tank is connected with a water inlet of a disinfection tank, and a water outlet of the disinfection tank is connected to a discharge pipe or a discharge canal.
In the scheme, the method comprises the following steps: the sludge outlet of the sedimentation tank is provided with a sludge return pipe connected to the anoxic tank, and is also provided with a sludge discharge pipe connected with the sludge concentration tank, and the filtrate outlet of the sludge concentration tank is connected to the regulating tank. Part of sludge is returned to the anoxic tank through a pump to be supplemented, the rest of sludge is lifted to the sludge concentration tank through the pump, the sludge is transported outside through the septic tank after being concentrated and disinfected, and filtrate is returned to the regulating tank for circulating treatment.
In the scheme, the method comprises the following steps: the disinfection pond is connected with disinfectant and throws the feeding device, disinfectant throws the feeding device and includes the dosing tank, be provided with spiral-flow type gas agitator in the dosing tank, be provided with metering control valve and automatic dosing solenoid valve on the export of dosing tank, make things convenient for automatic measurement dosing.
In the scheme, the method comprises the following steps: the liquid level meter is arranged in the dosing tank, so that the liquid level in the dosing tank can be conveniently monitored.
The beneficial effects of the utility model are as follows: aiming at the characteristics of hospital sewage and the requirements of discharged water quality, the system comprehensively analyzes and combines the relevant regulations of hospital sewage treatment to absorb the practical experience of related enterprises in sewage treatment, adopts the biochemical treatment and disinfectant disinfection processes such as chlorine dioxide/sodium hypochlorite and the like, adopts an anoxic and aerobic combined method to reduce the COD and BOD of the sewage, ensures that the sewage achieves the purifying effect, has low cost and simple system, and can continuously reach the pre-discharge standard of the discharge standard of water pollutants of medical institutions.
Drawings
Fig. 1 is a process flow diagram of the present utility model.
Detailed Description
As shown in fig. 1, a hospital sewage treatment system includes a septic tank 1 for collecting domestic sewage and an oil separation tank 2 for collecting kitchen sewage.
The water outlets of the septic tank 1 and the oil separation tank 2 are respectively connected with the water inlet of the grating tank 3, the grating tank 3 is also provided with a medical sewage water inlet, the water outlet of the grating tank 3 is connected with the water inlet of the regulating tank 4, the water outlet of the regulating tank 4 is connected with the water inlet of the anoxic tank 5, the water outlet of the anoxic tank 5 is connected with the water inlet of the biological contact oxidation tank 6, and the water outlet of the biological contact oxidation tank 6 is connected with the water inlet of the sedimentation tank 7.
The supernatant outlet of the sedimentation tank 7 is connected with the water inlet of the disinfection tank 8, the disinfection tank 8 is connected with a disinfectant feeding device (not shown in the figure), the disinfectant feeding device comprises a dosing tank, a rotational flow type gas stirrer is arranged in the dosing tank, and a metering regulating valve and an automatic dosing electromagnetic valve are arranged on the outlet of the dosing tank, so that automatic metering dosing is facilitated.
The liquid level meter is also arranged in the dosing tank, so that the liquid level in the dosing tank can be conveniently monitored.
The water outlet of the disinfection tank 8 is connected to a drain pipe or drain.
The sludge outlet of the sedimentation tank 7 is provided with a sludge return pipe connected to the anoxic tank 5, and is also provided with a sludge discharge pipe connected with the sludge concentration tank 9, and the filtrate outlet of the sludge concentration tank 9 is connected to the regulating tank 4. Part of sludge is returned to the anoxic tank 5 by a pump to be supplemented, the rest of sludge is lifted to the sludge concentration tank 9 by the pump, the sludge is concentrated and disinfected and then is transported outside by the septic tank, and the filtrate is returned to the regulating tank 4 for cyclic treatment.
The treatment process of the real system adopts the treatment process mainly comprising anaerobic biochemical treatment, biological contact oxidation and disinfection; the main functions of each treatment pool are as follows:
and (4) an adjusting tank: the pretreated converging sewage is removed by a grid pond 3, then flows to an adjusting pond 4 automatically, the water quality and the water quantity are homogenized in the adjusting pond 4, the temperature, the concentration, the pH value and the like are automatically adjusted, and then the sewage is lifted to an anoxic pond 5 by a pump;
anoxic tank 5: the concentration of the organic matters is low after the organic matters are respectively utilized by the phosphorus accumulating bacteria and the denitrifying bacteria, which is beneficial to the growth and propagation of autotrophic nitrifying bacteria and mainly used for removing nitrogen.
Biological contact oxidation cell 6: the biological contact oxidation tank 6 is a biochemical treatment device which takes a biological film as a main material and has active sludge; most of organic matters in the sewage are degraded and purified, the aerobic bacteria take the filler as a carrier, and the organic matters in the sewage are decomposed into inorganic salts by taking the organic matters in the sewage as nutrition, so that the aim of purifying is fulfilled.
The existence of aerobic bacteria must have enough oxygen, namely, enough dissolved oxygen in sewage to achieve the purpose of biochemical treatment; the treatment performance of the biological contact oxidation tank 6 is therefore dependent on the packing and the aerator.
Sedimentation tank 7: sewage is treated by the biological contact oxidation tank 6 and then automatically flows into the sedimentation tank 7, mud-water separation is carried out in the sedimentation tank 7, and supernatant overflows into the disinfection tank by the overflow weir. The precipitated sludge is returned to the anoxic tank 5 or lifted to the sludge concentration tank 9 by a pump, the sludge is concentrated and disinfected and then is transported outside by a fecal suction truck, and the filtrate is returned to the regulating tank 4.
Disinfection pond 8: sterilizing the sewage, killing germs, and discharging after reaching standards.
Sludge concentration tank 9: the excess sludge discharged from the sedimentation tank 7 is discharged into a sludge concentration tank 9, the concentrated sludge is transported outwards, and the filtrate is returned to the regulating tank 4.
The effluent quality is as follows:
| pH | CODcr | BOD5 | SS | fecal coliform count (MPN/L) |
| 6～9 | ≤250 | ≤100 | ≤60 | ≤5000 |
After the treatment of the utility model, the emission standard of water pollutants in medical institutions (GB 1866-2005) can be met.
Claims (4)
1. A hospital sewage treatment system, characterized in that: including septic tank (1) and the oil removal pond (2) that are used for collecting kitchen sewage, the delivery port of septic tank (1) and oil removal pond (2) links to each other with the water inlet in grid pond (3) respectively, still be equipped with the water inlet of medical sewage on grid pond (3), the delivery port in grid pond (3) links to each other with the water inlet of equalizing basin (4), the delivery port in equalizing basin (4) links to each other with the water inlet in anoxic tank (5), the delivery port in anoxic tank (5) links to each other with the water inlet in biological contact oxidation pond (6), the delivery port in biological contact oxidation pond (6) links to each other with the water inlet of sedimentation tank (7), the supernatant outlet in sedimentation tank (7) links to each other with the water inlet in disinfection pond (8), the delivery port in disinfection pond (8) is connected to the drain pipe or discharges the canal.
2. The hospital wastewater treatment system of claim 1, wherein: the sludge outlet of the sedimentation tank (7) is provided with a sludge return pipe connected to the anoxic tank (5), and is also provided with a sludge discharge pipe connected with the sludge concentration tank (9), and the filtrate outlet of the sludge concentration tank (9) is connected to the regulating tank (4).
3. The hospital wastewater treatment system of claim 1, wherein: the disinfection pond (8) is connected with disinfectant feeding device, disinfectant feeding device includes the dosing tank, be provided with spiral-flow type gas agitator in the dosing tank, be provided with metering control valve and automatic dosing solenoid valve on the export of dosing tank.
4. A hospital wastewater treatment system according to claim 3 wherein: a liquid level meter is arranged in the dosing tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321978277.2U CN220449975U (en) | 2023-07-26 | 2023-07-26 | Sewage treatment system for hospital |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321978277.2U CN220449975U (en) | 2023-07-26 | 2023-07-26 | Sewage treatment system for hospital |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220449975U true CN220449975U (en) | 2024-02-06 |
Family
ID=89724984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321978277.2U Active CN220449975U (en) | 2023-07-26 | 2023-07-26 | Sewage treatment system for hospital |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220449975U (en) |
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2023
- 2023-07-26 CN CN202321978277.2U patent/CN220449975U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |