CN114956452A - Hospital wastewater treatment system and treatment method - Google Patents
Hospital wastewater treatment system and treatment method Download PDFInfo
- Publication number
- CN114956452A CN114956452A CN202210527133.9A CN202210527133A CN114956452A CN 114956452 A CN114956452 A CN 114956452A CN 202210527133 A CN202210527133 A CN 202210527133A CN 114956452 A CN114956452 A CN 114956452A
- Authority
- CN
- China
- Prior art keywords
- wastewater
- disinfection device
- tank
- hospital
- communicated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 111
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 102
- 239000002351 wastewater Substances 0.000 claims abstract description 97
- 238000000926 separation method Methods 0.000 claims abstract description 61
- 239000005416 organic matter Substances 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 239000003814 drug Substances 0.000 claims abstract description 25
- 229940079593 drug Drugs 0.000 claims abstract description 22
- 244000000010 microbial pathogen Species 0.000 claims abstract description 22
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 239000012528 membrane Substances 0.000 claims description 76
- 238000006243 chemical reaction Methods 0.000 claims description 38
- 230000003647 oxidation Effects 0.000 claims description 20
- 238000007254 oxidation reaction Methods 0.000 claims description 20
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 20
- 239000010802 sludge Substances 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 244000005700 microbiome Species 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 238000005273 aeration Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000011001 backwashing Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 239000010865 sewage Substances 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 241000700605 Viruses Species 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 208000035473 Communicable disease Diseases 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 244000052769 pathogen Species 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical group [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002062 proliferating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/003—Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/121—Multistep treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
- C02F3/1273—Submerged membrane bioreactors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a hospital wastewater treatment system and a treatment method, and relates to the technical field of municipal administration and sewage treatment. The hospital wastewater treatment system comprises a solid-liquid separation device, a multi-stage disinfection device and an organic matter separation device, wherein the solid-liquid separation device is used for introducing the wastewater of the hospital and removing impurities in the wastewater; the multi-stage disinfection device comprises a first-stage disinfection device and a second-stage disinfection device, wherein a water inlet of the first-stage disinfection device is communicated with a water outlet of the solid-liquid separation device and used for removing pathogenic microorganisms in wastewater, and a water inlet of the second-stage disinfection device is communicated with a water outlet of the first-stage disinfection device and used for carrying out secondary disinfection on the wastewater disinfected by the first-stage disinfection device. The invention aims to solve the problems that the existing hospital wastewater is directly discharged or the adopted process cannot thoroughly remove the medicines and the like in the wastewater.
Description
Technical Field
The invention relates to the technical field of municipal administration and sewage treatment, in particular to a hospital wastewater treatment system and a treatment method.
Background
The hospital wastewater comes from department offices, sickrooms, pharmacies, operating rooms, laboratories and the like of hospitals, the water quantity of the wastewater fluctuates greatly, and a large amount of pathogens (parasitic ova, pathogenic bacteria, viruses and the like), medicines, organic matters, floating matters, suspended matters and the like are contained in the wastewater. If the waste water enters urban sewer pipelines or environmental water bodies without being treated and discharged, the pollution of the water bodies is often caused, various diseases and infectious diseases are caused, and the health of people is seriously harmed.
At present, the management of hospital wastewater treatment is gradually improved, and the hospital wastewater treatment technology mainly comprises coagulating sedimentation, disinfection, biological contact oxidation or activated sludge method and the like. The disinfection treatment aiming at the wastewater basically can meet the requirements, but the automation degree is not high, more importantly, the medicines in the hospital wastewater are not included in the indexes at present, the medicines cannot be removed by the traditional treatment method, and the effluent enters the receiving water body to have certain influence on the water environment.
Disclosure of Invention
The invention mainly aims to provide a hospital wastewater treatment system and a treatment method, and aims to solve the problems that the existing hospital wastewater is directly discharged or the adopted process cannot thoroughly remove medicines and the like in the wastewater.
In order to achieve the above object, the present invention provides a hospital wastewater treatment system, comprising:
a solid-liquid separation device for introducing the wastewater of the hospital and removing impurities in the wastewater;
the multi-stage disinfection device comprises a primary disinfection device and a secondary disinfection device, wherein a water inlet of the primary disinfection device is communicated with a water outlet of the solid-liquid separation device and is used for removing pathogenic microorganisms in wastewater, and a water inlet of the secondary disinfection device is communicated with a water outlet of the primary disinfection device and is used for carrying out secondary disinfection on the wastewater disinfected by the primary disinfection device; and (c) a second step of,
and the organic matter separating device is arranged on a pipeline communicated with the primary disinfection device and the secondary disinfection device and is communicated with the water outlet of the primary disinfection device and the water inlet of the secondary disinfection device so as to remove organic matters in the wastewater.
Optionally, the organic separation device comprises:
the facultative reaction tank comprises two water inlets and a water outlet, and one water inlet of the facultative reaction tank is communicated with the water outlet of the primary disinfection device; and the number of the first and second groups,
the MBR membrane tank comprises a water inlet and two water outlets, the water inlet of the MBR membrane tank is communicated with one water outlet of the facultative reaction tank, one water outlet of the MBR membrane tank is communicated with the secondary disinfection device, and the other water outlet of the MBR membrane tank is communicated with the other water inlet of the facultative reaction tank, so that a circulation loop is formed between the MBR membrane tank and the facultative reaction tank;
wherein, active sludge is arranged in the facultative reaction tank and the MBR membrane tank.
Optionally, the MBR membrane tank comprises:
the inorganic membrane is used for intercepting microorganisms in the wastewater from entering the secondary disinfection device;
a suction pump for pumping wastewater from the MBR membrane tank to the secondary disinfection device;
the backwashing pump is used for introducing clean water to wash the inorganic membrane so as to strip suspended sludge deposited on the surface of the inorganic membrane; and the number of the first and second groups,
and the medicine washing pump is used for washing and adding medicines to the inorganic membrane.
Optionally, the inorganic membrane is a flat immersed inorganic membrane, the surface of the flat immersed inorganic membrane is loaded with a super-hydrophilic material, and the pore diameter of the flat immersed inorganic membrane is A, wherein A is greater than or equal to 50nm and less than or equal to 100 nm.
Optionally, the organic matter separation device further comprises a fan, and the fan is used for carrying out aeration treatment on the facultative reaction tank and the MBR membrane tank.
Optionally, the hospital wastewater treatment system further comprises a regulating reservoir, the regulating reservoir is arranged on a pipeline communicated with the solid-liquid separation device and the organic matter separation device, a water inlet of the regulating reservoir is communicated with a water outlet of the primary disinfection device, and a water outlet of the regulating reservoir is communicated with a water inlet of the organic matter separation device.
Optionally, the solid-liquid separation device comprises a grid, and the filtration precision of the grid is B, wherein B is less than or equal to 1 mm.
Optionally, the primary disinfection device comprises a NaClO generator, the NaClO generator is used for adding NaClO into the wastewater, the concentration of the added NaClO is C, and C is larger than or equal to 5mg/L and smaller than or equal to 10 mg/L.
Optionally, the secondary disinfection device comprises a UV/O 3 Advanced oxidation disinfection tank, said UV/O 3 The water inlet of the advanced oxidation disinfection tank is communicated with the water outlet of the organic matter separation device, and the UV/O is 3 The water outlet of the advanced oxidation disinfection tank is communicated with the water inlet of the clean water tank, and the UV/O is used for 3 The advanced oxidation disinfection tank is used for removing residual medicines and pathogenic microorganisms in the wastewater.
Correspondingly, the invention also provides a treatment method based on the hospital wastewater treatment system, and the experimental method comprises the following steps:
s1: firstly, solid-liquid separation is carried out on the hospital wastewater by a solid-liquid separation device;
s2: introducing the wastewater with the solid impurities removed into a primary disinfection device from a solid-liquid separation device to remove pathogenic microorganisms;
s3: introducing the wastewater disinfected by the primary disinfection device into an organic matter separation device from the primary disinfection device to remove organic matters;
s4: and introducing the wastewater subjected to organic matter separation in the organic matter separation device into a secondary disinfection device, and carrying out secondary disinfection to remove residual pathogenic microorganisms and medicines.
In the technical scheme of the invention, hospital wastewater is introduced into the hospital wastewater treatment system, the wastewater firstly flows into the solid-liquid separation device to remove solid impurities contained in the wastewater, the wastewater subjected to solid-liquid separation flows into the primary disinfection device to be subjected to primary disinfection treatment so as to remove pathogenic microorganisms contained in the wastewater, the wastewater subjected to primary disinfection treatment flows into the organic matter separation device so as to remove organic matters such as nitrogen and phosphorus contained in the wastewater, and the wastewater subjected to organic matter separation treatment flows into the secondary disinfection device to be subjected to secondary disinfection so as to remove pathogenic microorganisms and drugs remaining in the wastewater.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic system configuration diagram of one embodiment of a hospital wastewater treatment system provided by the present invention;
FIG. 2 is a schematic flow chart of the hospital wastewater treatment method provided by the invention.
The reference numbers illustrate:
| reference numerals | Name(s) | Reference numerals | Name (R) |
| 1 | Solid- |
3 | Organic matter separating device |
| 1a | Grid | 301 | Facultative reaction tank |
| 201 | Primary disinfection device | 302 | MBR membrane tank |
| 201a | NaClO generator | 4 | |
| 202 | Two-stage disinfection device | 5 | Adjusting |
| 202a | UV/O 3 Advanced oxidation disinfection pool |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The hospital wastewater comes from various departments, wards, pharmacies, operating rooms, laboratories and the like of hospitals, the wastewater water quantity fluctuation is large, and a large amount of pathogens (parasitic ova, pathogenic bacteria, viruses and the like), medicines, organic matters, floating matters, suspended matters and the like are contained in the wastewater. If the waste water enters urban sewer pipelines or environmental water bodies without being treated and discharged, the pollution of the water bodies is often caused, various diseases and infectious diseases are caused, and the health of people is seriously harmed.
At present, the management of hospital wastewater treatment is gradually improved, and the hospital wastewater treatment technology mainly comprises coagulating sedimentation, disinfection, biological contact oxidation or activated sludge method and the like. The disinfection treatment aiming at the wastewater basically can meet the requirements, but the automation degree is not high, more importantly, the medicines in the hospital wastewater are not included in the indexes at present, the medicines cannot be removed by the traditional treatment method, and the effluent enters the receiving water body to have certain influence on the water environment.
In view of the above, the present invention provides a hospital wastewater treatment system, and fig. 1 to 2 illustrate an embodiment of the present invention.
Referring to fig. 1, the hospital wastewater treatment system includes a solid-liquid separation device 1, a multi-stage disinfection device, and an organic matter separation device 3, wherein the solid-liquid separation device 1 is used for introducing wastewater of a hospital and removing impurities in the wastewater; the multi-stage disinfection device comprises a first-stage disinfection device 201 and a second-stage disinfection device 202, wherein a water inlet of the first-stage disinfection device 201 is communicated with a water outlet of the solid-liquid separation device 1 and is used for removing pathogenic microorganisms in wastewater, and a water inlet of the second-stage disinfection device 202 is communicated with a water outlet of the first-stage disinfection device 201 and is used for carrying out secondary disinfection on the wastewater disinfected by the first-stage disinfection device 201; the organic matter separating device 3 is arranged on a pipeline communicated with the first-stage disinfection device 201 and the second-stage disinfection device 202 and communicated with a water outlet of the first-stage disinfection device 201 and a water inlet of the second-stage disinfection device 202 to remove organic matters in wastewater.
In the technical scheme of the invention, hospital wastewater is introduced into the hospital wastewater treatment system, the wastewater firstly flows into the solid-liquid separation device 1 to remove solid impurities contained in the wastewater, the wastewater after solid-liquid separation flows into the primary disinfection device 201 to be disinfected for the first time so as to remove pathogenic microorganisms contained in the wastewater, the wastewater after primary disinfection flows into the organic matter separation device 3 so as to remove organic matters such as nitrogen and phosphorus contained in the wastewater, and the wastewater after organic matter separation flows into the secondary disinfection device 202 to be disinfected for the second time so as to remove pathogenic microorganisms and medicines remained in the wastewater.
When wastewater generated in a hospital flows into the hospital wastewater treatment system, the wastewater in all regions of the hospital may be collected together and introduced into the solid-liquid separation device 1, or different wastewaters generated in different regions may be introduced into the solid-liquid separation device 1 through corresponding pipes.
In this embodiment, the hospital wastewater treatment system can adopt an AI artificial intelligence control method, can effectively cope with the situations of wastewater fluctuation and the like, has high intelligent and automatic degrees, has stable effluent quality effect, can adopt an integrated equipment form or a modular equipment form according to the treatment scale, occupies small area, is fast to install and saves investment.
Further, the organic matter separation device 3 comprises a facultative reaction tank 301 and an MBR membrane tank 302, the facultative reaction tank 301 comprises two water inlets and a water outlet, and one water inlet of the facultative reaction tank 301 is communicated with the water outlet of the primary disinfection device 201; the MBR membrane tank 302 comprises a water inlet and two water outlets, the water inlet of the MBR membrane tank 302 is communicated with a water outlet of the facultative reaction tank 301, one water outlet of the MBR membrane tank 302 is communicated with the secondary disinfection device 202, and the other water outlet of the MBR membrane tank 302 is communicated with the other water inlet of the facultative reaction tank 301, so that a circulation loop is formed between the MBR membrane tank 302 and the facultative reaction tank 301; wherein, activated sludge is arranged in both the facultative reaction tank 301 and the MBR membrane tank 302.
Wherein the dissolved oxygen concentration of the facultative reaction tank 301 is 0.5mg/L, and the composite flora YXM-06 cultured and domesticated for hospital wastewater treatment is added, so that the composite flora YXM-06 can be used for carrying out short-cut nitrification and denitrification under the facultative condition, wherein most organic matters contained in the wastewater are oxidized into CO2 to be oxidized and removed, ammonia nitrogen and nitrate nitrogen are converted into N2 to be removed, and further, efficient denitrification and dephosphorization are realized, meanwhile, the loss of active sludge can be avoided under the action of the membrane module of the MBR membrane tank 302, so that the concentration of the active sludge contained in the facultative reaction tank 301 and the MBR membrane tank 302 reaches 12000-16000 mg/L, compared with the conventional biochemical treatment sludge concentration which can only reach 4000-6000 mg/L, in the embodiment, the concentration of the active sludge contained in the facultative reaction tank and the MBR membrane tank 302 is higher, and the organic matters in the wastewater can be better adsorbed, so as to achieve higher organic matter treatment efficiency, and simultaneously, since part of the wastewater flowing into the MBR membrane tank 302 through the facultative reaction tank 301 is treated in the MBR membrane tank 302 and then flows back to the facultative reaction tank 301 through the circulation loop, microorganisms in the wastewater are completely trapped in the facultative reaction tank 301 and the MBR membrane tank 302, thereby being beneficial to the trapping and growth of slowly proliferating microorganisms such as nitrobacteria, and improving the nitrification efficiency of the system. Meanwhile, the hydraulic retention time of some refractory organic matters in the system can be prolonged, which is beneficial to improving the degradation efficiency of the refractory organic matters, and specifically, in this embodiment, the proportion of the sludge-water mixture flowing back from the MBR membrane tank 302 to the facultative tank is 300% -600% to achieve a better degradation effect.
In addition, in this embodiment, the sludge in the pipeline returning to the facultative reactor 301 through the MBR membrane tank 302 enters the sludge thickener and is dewatered by the sludge dewatering machine for periodic cleaning.
Further, the MBR membrane tank 302 includes an inorganic membrane for intercepting microorganisms in wastewater from entering the secondary disinfection device 202, a suction pump, a backwash pump, and a drug washing pump; the suction pump is used for pumping wastewater from the MBR membrane tank 302 to the secondary disinfection device 202; the back washing pump is used for introducing clean water to wash the inorganic membrane so as to strip suspended sludge deposited on the surface of the inorganic membrane; the medicine washing pump is used for cleaning and adding medicines to the inorganic membrane.
Specifically, the inorganic membrane is a flat immersed inorganic membrane, the surface of the flat immersed inorganic membrane is loaded with super-hydrophilic materials, the aperture of the flat immersed inorganic membrane is A, and A is not less than 50nm and not more than 100 nm. By selecting the inorganic membrane as the flat submerged inorganic membrane, the flat submerged inorganic membrane has a longer service life, better contamination resistance, higher flux, and more energy saving compared to a common organic membrane, and specifically, in this embodiment, the material of the flat submerged inorganic membrane is cordierite or Al 2 O 3 And the aperture is between 50nm and 100nm, so that the effect of effectively intercepting organic matters and microorganisms in the wastewater can be achieved on the premise of not influencing the membrane flux.
Referring to fig. 1 again, the organic matter separation device 3 further includes a blower 4, and the blower 4 is used for performing aeration treatment on the facultative reaction tank 301 and the MBR membrane tank 302. Through setting up fan 4 is right facultative reaction pond 301 with MBR membrane cisterna 302 carries out aeration treatment, lets in the air in to sewage by force, makes sewage and air contact oxygenate in the pond to stir liquid, oxygen in the air is to the transfer in the liquid with higher speed, prevents that the interior suspended object of pond from sinking, strengthens organic matter and microorganism and dissolved oxygen's contact in the pond, thereby carries out oxidative decomposition to organic matter in the waste water.
Further, since the MBR membrane tank 302 and the facultative reaction tank 301 need to keep quantitative operation, specifically, in this embodiment, the hospital wastewater treatment system further includes an adjusting tank 5, a water inlet of the adjusting tank 5 is communicated with a water outlet of the primary disinfection device 201, and a water outlet of the adjusting tank 5 is communicated with a water inlet of the organic matter separation device 3. The flow rate of wastewater flowing into the facultative reaction tank 301 and the MBR membrane tank 302 is controlled by setting the adjusting tank 5 according to the treatment capacity of the facultative reaction tank 301 and the MBR membrane tank 302.
Further, the solid-liquid separation device 1 comprises a grid 1a, and the filtration precision of the grid 1a is B, wherein B is less than or equal to 1 mm. The solid impurities in the wastewater are cleaned by arranging the grating 1a, and meanwhile, in order to ensure the filtering precision of the grating 1a, specifically, in the embodiment, the filtering precision of the grating 1a is set to be less than one millimeter so as to separate the solid impurities with larger volume from the wastewater.
It should be noted that the grid slag generated by the interception of the grid 1a is periodically cleaned after being extruded by the screw extruder, so as to avoid the influence of too much accumulated grid slag on the water outlet effect.
Further, the primary disinfection device 201 comprises a NaClO generator 201a, wherein the NaClO generator 201a is used for adding NaClO into wastewater, the concentration of the added NaClO is C, and C is larger than or equal to 5mg/L and smaller than or equal to 10 mg/L. The NaClO generator 201a is arranged to put NaClO before the wastewater flows into the regulating reservoir 5 so as to kill pathogenic microorganisms contained in the wastewater, and in order to effectively kill the pathogenic microorganisms without affecting the treatment effect of a subsequent system, specifically, in the embodiment, the chlorine adding concentration of the NaClO generator 201a is 5-10 mg/L.
Still further, the secondary disinfection device 202 comprises UV/O 3 Advanced oxidation sterilization basin 202a, said UV/O 3 The water inlet of the advanced oxidation and disinfection tank 202a is communicated with the water outlet of the organic matter separation device 3, and the UV/O 3 The water outlet of the advanced oxidation disinfection tank 202a is communicated with the water inlet of the clean water tank, and the UV/O 3 The advanced oxidation disinfection tank 202a is used for removing residual medicines and pathogenic microorganisms in the wastewater. Wherein, the UV/O 3 The advanced oxidation disinfection tank 202a has multiple functions under the action of ultraviolet rays and ozone, UV and O 3 All have the functions of killing virus and bacteria and can ensure that the effluent does not contain pathogenic microorganisms, UV and O 3 The advanced oxidation effect of the device can also generate strong oxidizing free radicals, can oxidize, degrade and remove residual medicines in the effluent, and improves the safety of the effluent.
With reference to fig. 2, the invention also provides a treatment method based on the hospital wastewater treatment system, and the experimental method comprises the following steps:
s1: firstly, solid-liquid separation is carried out on the hospital wastewater by a solid-liquid separation device 1;
specifically, solid impurities in the wastewater are removed through the grating 1a, the filtering precision of the grating 1a is less than or equal to 1mm, and grating residues are extruded by a screw extruder and then are periodically cleaned.
S2: introducing the wastewater with the solid impurities removed from the solid-liquid separation device 1 into a primary disinfection device 201 to remove pathogenic microorganisms;
specifically, NaClO is added to the wastewater filtered by the grid 1a through a NaClO generator 201a, wherein the concentration of NaClO added by the NaClO generator 201a is 5-10 mg/L.
S3: introducing the wastewater disinfected by the primary disinfection device 201 into the organic matter separation device 3 from the primary disinfection device 201 to remove organic matters;
specifically, wastewater sterilized by NaClO enters a facultative reaction tank, most organic matters are oxidized into CO2 to be removed, and ammonia nitrogen and nitrate nitrogen are converted into N2 to be removed in the facultative reaction tank; after the wastewater in the facultative reaction tank is treated, the wastewater flows into the MBR membrane tank 302 to carry out aerobic reaction and sludge-water separation.
S4: the wastewater from the organic matter separation in the organic matter separation apparatus 3 is introduced into the secondary sterilizing apparatus 202 and is secondarily sterilized to remove residual pathogenic microorganisms and drugs.
Specifically, the water treated by the facultative reaction tank and the MBR membrane tank 302 passes through the inorganic membrane under the action of the suction pump and enters the UV/O 3 The advanced oxidation disinfection tank 202a, the microorganisms in the biochemical tank comprise pathogenic microorganisms which are intercepted by an inorganic membrane; in UV/O 3 In the advanced oxidation sterilization tank 202a, UV will make O 3 Strong oxidizing free radicals are generated through catalysis, pathogenic microorganisms remained in the effluent are thoroughly killed, meanwhile, medicines which are difficult to be biodegraded in the water can be degraded and removed, and the water after advanced oxidation and disinfection enters a clean water tank to be discharged up to the standard or recycled.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A hospital wastewater treatment system, comprising:
a solid-liquid separation device for introducing the wastewater of the hospital and removing impurities in the wastewater;
the multi-stage disinfection device comprises a primary disinfection device and a secondary disinfection device, wherein a water inlet of the primary disinfection device is communicated with a water outlet of the solid-liquid separation device and is used for removing pathogenic microorganisms in wastewater, and a water inlet of the secondary disinfection device is communicated with a water outlet of the primary disinfection device and is used for carrying out secondary disinfection on the wastewater disinfected by the primary disinfection device; and the number of the first and second groups,
the organic matter separator is arranged on a pipeline communicated with the first-stage disinfection device and the second-stage disinfection device, and is communicated with a water outlet of the first-stage disinfection device and a water inlet of the second-stage disinfection device to remove organic matters in wastewater.
2. The hospital wastewater treatment system of claim 1, wherein said organic matter separation device comprises:
the facultative reaction tank comprises two water inlets and a water outlet, and one water inlet of the facultative reaction tank is communicated with the water outlet of the primary disinfection device; and the number of the first and second groups,
the MBR membrane tank comprises a water inlet and two water outlets, the water inlet of the MBR membrane tank is communicated with one water outlet of the facultative reaction tank, one water outlet of the MBR membrane tank is communicated with the secondary disinfection device, and the other water outlet of the MBR membrane tank is communicated with the other water inlet of the facultative reaction tank, so that a circulation loop is formed between the MBR membrane tank and the facultative reaction tank;
wherein, active sludge is arranged in the facultative reaction tank and the MBR membrane tank.
3. The hospital wastewater treatment system of claim 2 wherein said MBR membrane basin comprises:
the inorganic membrane is used for intercepting microorganisms in the wastewater from entering the secondary disinfection device;
a suction pump for pumping wastewater from the MBR membrane tank to the secondary disinfection device;
the backwashing pump is used for introducing clean water to flush the inorganic membrane so as to strip suspended sludge deposited on the surface of the inorganic membrane; and the number of the first and second groups,
and the medicine washing pump is used for washing and adding medicines to the inorganic membrane.
4. The hospital wastewater treatment system of claim 3, wherein the inorganic membrane is configured as a flat submerged inorganic membrane, the surface of the flat submerged inorganic membrane is loaded with the super-hydrophilic material, the pore size of the flat submerged inorganic membrane is A, and A is greater than or equal to 50nm and less than or equal to 100 nm.
5. The hospital wastewater treatment system of claim 2, wherein the organic matter separation device further comprises a blower for aeration treatment of the facultative reaction tank and the MBR membrane tank.
6. The hospital wastewater treatment system according to claim 1, further comprising a regulating reservoir, wherein the regulating reservoir is disposed on a pipeline through which the solid-liquid separation device communicates with the organic matter separation device, a water inlet of the regulating reservoir communicates with a water outlet of the primary disinfection device, and a water outlet of the regulating reservoir communicates with a water inlet of the organic matter separation device.
7. The hospital wastewater treatment system of claim 1, wherein said solid-liquid separation device comprises a grid having a filtration precision of B, wherein B is less than or equal to 1 mm.
8. The hospital wastewater treatment system of claim 1, wherein the primary disinfection device comprises a NaClO generator for adding NaClO into wastewater, wherein the concentration of the added NaClO is C, and wherein C is greater than or equal to 5mg/L and less than or equal to 10 mg/L.
9. The hospital wastewater treatment system of claim 1, wherein the secondary disinfection device comprises a UV/O 3 Advanced oxidation disinfection tank, said UV/O 3 The water inlet of the advanced oxidation disinfection tank is communicated with the water outlet of the organic matter separation device, and the UV/O is 3 The water outlet of the advanced oxidation disinfection tank is communicated with the water inlet of the clean water tank, and the UV/O is used for 3 The advanced oxidation disinfection tank is used for removing residual medicines and pathogenic microorganisms in the wastewater.
10. A method for treating hospital wastewater treatment system according to any of claims 1-9, characterized in that it comprises the following steps:
s1: firstly, solid-liquid separation is carried out on the hospital wastewater by a solid-liquid separation device;
s2: introducing the wastewater with the solid impurities removed into a primary disinfection device from a solid-liquid separation device to remove pathogenic microorganisms;
s3: introducing the wastewater disinfected by the primary disinfection device into an organic matter separation device from the primary disinfection device to remove organic matters;
s4: and introducing the wastewater subjected to organic matter separation in the organic matter separation device into a secondary disinfection device, and carrying out secondary disinfection to remove residual pathogenic microorganisms and medicines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210527133.9A CN114956452A (en) | 2022-05-13 | 2022-05-13 | Hospital wastewater treatment system and treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210527133.9A CN114956452A (en) | 2022-05-13 | 2022-05-13 | Hospital wastewater treatment system and treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114956452A true CN114956452A (en) | 2022-08-30 |
Family
ID=82983010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210527133.9A Pending CN114956452A (en) | 2022-05-13 | 2022-05-13 | Hospital wastewater treatment system and treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114956452A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090166280A1 (en) * | 2007-12-28 | 2009-07-02 | Beijing Jinaohuarong Science And Technology Co., Ltd. | Wastewater purifying system in hospitals |
| CN204569658U (en) * | 2015-03-31 | 2015-08-19 | 尹强 | One way of life sewage and medical waste water treatment unit |
| CN106927634A (en) * | 2017-04-10 | 2017-07-07 | 浙江省现代建筑设计研究院有限公司 | Waste water treatment system for hospitals |
| CN206666340U (en) * | 2017-04-07 | 2017-11-24 | 云南平策环保科技有限公司 | A kind of lesion sewage-treatment plant for hospital |
| CN214360874U (en) * | 2021-01-12 | 2021-10-08 | 东莞优胜环保科技有限公司 | Sewage treatment device suitable for hospital |
-
2022
- 2022-05-13 CN CN202210527133.9A patent/CN114956452A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090166280A1 (en) * | 2007-12-28 | 2009-07-02 | Beijing Jinaohuarong Science And Technology Co., Ltd. | Wastewater purifying system in hospitals |
| CN204569658U (en) * | 2015-03-31 | 2015-08-19 | 尹强 | One way of life sewage and medical waste water treatment unit |
| CN206666340U (en) * | 2017-04-07 | 2017-11-24 | 云南平策环保科技有限公司 | A kind of lesion sewage-treatment plant for hospital |
| CN106927634A (en) * | 2017-04-10 | 2017-07-07 | 浙江省现代建筑设计研究院有限公司 | Waste water treatment system for hospitals |
| CN214360874U (en) * | 2021-01-12 | 2021-10-08 | 东莞优胜环保科技有限公司 | Sewage treatment device suitable for hospital |
Non-Patent Citations (1)
| Title |
|---|
| 孙宏: "《表面活性剂在分析化学和环境上的应用》", 哈尔滨地图出版社, pages: 264 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101468863A (en) | Hospital waste water purification system | |
| CN109592840A (en) | A kind of School Wastewater processing unit | |
| CN101708919A (en) | Method for treating leachate in refuse landfill site | |
| JP3323040B2 (en) | Ultrapure water production equipment | |
| CN112777865A (en) | Hospital sewage emergency treatment process and corresponding steel modular treatment equipment | |
| CN100522849C (en) | Method for advanced treatment of ammonia nitrogen sewage | |
| CN108609814A (en) | Toilet fecaluria recycling treatment equipment | |
| CN209143956U (en) | A kind of AO-MBR sewage-treatment plant | |
| CN212924753U (en) | Plastic regeneration cleaning wastewater treatment system | |
| CN103011528B (en) | Comprehensive sewage treatment system and method | |
| CN1931750B (en) | Petrochemical effluent treating and reusing process | |
| CN210150899U (en) | Hospital domestic sewage treatment system | |
| CN106145555A (en) | A kind of efficient combination processing system for high NH4 source water | |
| CN212640223U (en) | High concentration excrement sewage treatment system | |
| CN114956452A (en) | Hospital wastewater treatment system and treatment method | |
| CN209940768U (en) | Plug flow type membrane bioreactor | |
| CN205387525U (en) | Integration hospital sewage treatment facility | |
| CN114409204A (en) | Automatic wastewater treatment system and treatment method thereof | |
| CN212403868U (en) | Sewage treatment system adopting MBBR (moving bed biofilm reactor) process | |
| CN112830628A (en) | Domestic sewage treatment process | |
| CN217351094U (en) | Sewage treatment tank and sewage treatment equipment | |
| CN214781322U (en) | Steel modular treatment equipment for emergency treatment of hospital sewage | |
| CN217709158U (en) | Medical wastewater treatment equipment | |
| CN215250283U (en) | Buried domestic sewage treatment device | |
| CN108821521A (en) | Multistage settling gardens regeneration effluent system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |