CN112777865A - Hospital sewage emergency treatment process and corresponding steel modular treatment equipment - Google Patents
Hospital sewage emergency treatment process and corresponding steel modular treatment equipment Download PDFInfo
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- CN112777865A CN112777865A CN202110008924.6A CN202110008924A CN112777865A CN 112777865 A CN112777865 A CN 112777865A CN 202110008924 A CN202110008924 A CN 202110008924A CN 112777865 A CN112777865 A CN 112777865A
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- 239000010865 sewage Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 title claims description 8
- 239000010959 steel Substances 0.000 title claims description 8
- 239000012528 membrane Substances 0.000 claims abstract description 74
- 238000006298 dechlorination reaction Methods 0.000 claims abstract description 61
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000005273 aeration Methods 0.000 claims abstract description 40
- 239000010802 sludge Substances 0.000 claims abstract description 36
- 239000002351 wastewater Substances 0.000 claims abstract description 26
- 230000001954 sterilising effect Effects 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 239000000645 desinfectant Substances 0.000 claims abstract description 8
- 238000005728 strengthening Methods 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 34
- 241000894006 Bacteria Species 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- 241000700605 Viruses Species 0.000 claims description 7
- 230000009467 reduction Effects 0.000 claims description 5
- 239000003814 drug Substances 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 4
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 241000588724 Escherichia coli Species 0.000 claims description 3
- 241000108664 Nitrobacteria Species 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 244000005700 microbiome Species 0.000 claims description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 3
- 230000035939 shock Effects 0.000 claims description 3
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 3
- 230000007480 spreading Effects 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 3
- 238000006213 oxygenation reaction Methods 0.000 claims description 2
- 230000001902 propagating effect Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 239000005416 organic matter Substances 0.000 claims 1
- 238000006864 oxidative decomposition reaction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000004065 wastewater treatment Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 206010021143 Hypoxia Diseases 0.000 abstract 1
- 230000000249 desinfective effect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 244000052616 bacterial pathogen Species 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
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- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
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- 230000001546 nitrifying effect Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 239000010829 anatomical waste Substances 0.000 description 1
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Images
Classifications
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- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/29—Chlorine compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- 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
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- 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
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- 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
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- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The emergency treatment process for the hospital sewage provided by the invention has the advantages of high wastewater treatment efficiency, good sterilization effect, small equipment floor area and short manufacturing period, and reduces the manufacturing cost and time cost of hospital sewage treatment equipment. Waste water gets into the septic tank after disinfecting in advance, later waste water in the septic tank gets into the basket grid through the pump promotion and filters the back and get into aeration dechlorination equalizing basin, later waste water passes through the anaerobism pond in order, get into the MBR membrane cisterna after denitrogenation denitrification behind oxygen deficiency pond and the good oxygen pond, waste water gets into behind the MBR membrane cisterna, bottom layer mud is discharged and is nitrified the pond, partly mixed liquid flows back to in the anaerobism pond, the mixed liquid that has handled and has accomplished flows after passing through the membrane play water filtration of MBR membrane device, the membrane that passes through MBR membrane device flows after strengthening the disinfection, get into clear water disinfection pond, disinfectant secondary disinfection, discharge after the dechlorination, the mud of discharging the mud of sludge nitrification pond is regularly sucked outward.
Description
Technical Field
The invention relates to the technical field of hospital sewage treatment, in particular to a hospital sewage emergency treatment process, and further provides steel modular treatment equipment for hospital sewage emergency treatment.
Background
The hospital sewage contains more pollutants with complex components and higher concentration, and comprises wastewater discharged from wards, clinics, laboratory (chemical) laboratory, X-ray photofinishing, operating rooms, dining halls, laundry rooms and other places, and the wastewater contains a large amount of germs, viruses and parasites, also contains a plurality of organic and inorganic pollutants, such as various medicaments, disinfectants, anatomical wastes and other pollutants, and can cause great harm to the surrounding environment and water body after being directly discharged. Therefore, the comprehensive treatment of the hospital sewage is necessary, and good environmental benefits and social benefits are generated for the development of the society, the surrounding environment and the hospital. The national environmental protection Bureau promulgates special standards for sewage discharge in the medical industry in 2005: the discharge Standard for Water pollutants from medical institutions GB18466-2005 was formally implemented from 1/1 2006.
The conventional hospital sewage emergency treatment equipment cannot meet the actual requirements and cannot achieve the efficient sterilization effect, so that an emergency process and equipment capable of meeting the existing hospital sewage treatment requirements are urgently needed.
Disclosure of Invention
Aiming at the problems, the invention provides the hospital sewage emergency treatment process which has the advantages of high wastewater treatment efficiency, good sterilization effect, small equipment floor area and short manufacturing period, and reduces the manufacturing cost and time cost of hospital sewage treatment equipment.
A hospital sewage emergency treatment process is characterized in that: the method comprises the following steps that waste water enters a septic tank after being pre-sterilized, then the waste water in the septic tank is lifted by a pump to enter a basket grid for filtration and then enters an aeration dechlorination regulating tank, then the waste water sequentially passes through an anaerobic tank, an anoxic tank and an aerobic tank and then enters an MBR membrane tank after being denitrified, after the waste water enters the MBR membrane tank, bottom sludge is discharged into a sludge nitrification tank, part of mixed liquid flows back into the anaerobic tank, the treated mixed liquid flows out after being filtered by membrane outlet water of an MBR membrane device, the water flowing out through the membrane of the MBR membrane device enters a clear water disinfection tank after being reinforced and sterilized, a disinfectant is secondarily sterilized and discharged after dechlorination, and sludge discharged into the sludge nitrification tank is periodically sucked and transported for disposal; the aeration dechlorination regulating tank, the anaerobic tank, the anoxic tank, the aerobic tank, the sludge nitrification tank, the MBR membrane tank, the clear water disinfection tank and the dechlorination tank are all assembled by stainless steel modules.
It is further characterized in that:
the pre-disinfection is to adopt a disinfectant to pre-disinfect medical sewage containing viruses and bacteria, and then the pre-disinfected sewage enters a septic tank to prevent harmful viruses and bacteria from propagating and spreading;
the pre-disinfection is carried out at the pipeline opening of the septic tank;
the aeration dechlorination regulating reservoir is used for regulating and fully balancing water quality and water quantity through aeration dechlorination, so that sewage can uniformly enter a subsequent treatment unit, the shock resistance of the whole system is improved, the design scale of the treatment unit is reduced, the reduction of the operation cost and the influence caused by water quality fluctuation is facilitated, the pre-disinfection residual chlorine is reduced and reaches the standard, and the subsequent biochemical effect is ensured;
the sewage entering the MBR membrane tank is subjected to denitrification by nitrifying bacteria, meanwhile, aerobic microorganisms are used for oxidizing and decomposing organic matters through endogenous respiration to achieve the purpose of reducing COD, and an MBR membrane device immersed in the MBR membrane tank is used for filtering the muddy water mixed liquid so as to further remove SS, oil and escherichia coli;
the oxygenation devices in the aerobic tank and the MBR membrane tank adopt low-noise and energy-saving air-floating blowers for aeration;
enrichment fillers are arranged in each biochemical pool;
the strengthening disinfection is specifically realized by determining the proportion and the adding amount of a sodium persulfate medicament and matching with the UV ultraviolet disinfection of a pipeline through analysis and experiments on actual water quality, and efficiently sterilizing hospital sewage.
Steel modularization treatment facility of hospital's sewage emergency treatment, its characterized in that: an anaerobic tank is arranged on one side of the aeration dechlorination regulating tank, the aeration dechlorination regulating tank and the anaerobic tank form a first horizontal structure, an aerobic tank, an anoxic tank and a sludge nitrification tank form a second horizontal structure and are arranged below the aeration dechlorination regulating tank and the anaerobic tank, an MBR membrane tank, a clear water disinfection tank and a dechlorination tank form a third horizontal structure, the first horizontal structure, the second horizontal structure and the third horizontal structure are combined to form a rectangular modular treatment device, the aeration dechlorination regulating tank, the anaerobic tank, the aerobic tank, the anoxic tank, the sludge nitrification tank, the MBR membrane tank, the clear water disinfection tank and the dechlorination tank are all assembled by stainless steel modules, one side outlet of the aeration dechlorination regulating tank is communicated with the corresponding side inlet of the anaerobic tank, an outlet of the anaerobic tank is communicated with an inlet of the anoxic tank arranged on tank, an outlet of the anoxic tank is communicated with an inlet of the aerobic tank, the outlet of the aerobic tank is communicated with the inlet of a third transverse MBR membrane tank, the membrane outlet of the MBR membrane tank is communicated with the inlet of the clear water disinfection tank, the outlet of the clear water disinfection tank is communicated to the dechlorination tank, the reflux outlet of the MBR membrane tank is communicated to the reflux inlet of the anaerobic tank through a first pipeline, and the sludge discharge port of the MBR membrane tank is communicated to the inlet of the sludge nitrification tank through a second pipeline.
It is further characterized in that:
a basket grid is arranged at the inlet of the aeration dechlorination regulating tank, so that the primary filtration of the wastewater is ensured;
the MBR membrane tank is externally connected with a membrane cleaning device to ensure the normal cleaning of the MBR membrane;
the device also comprises a fan, wherein the fan is respectively connected to corresponding bottom areas of the dechlorination regulating tank, the anaerobic tank, the aerobic tank, the anoxic tank and the MBR membrane tank through pipelines.
After the invention is adopted, the aeration dechlorination regulating tank, the anaerobic tank, the aerobic tank, the anoxic tank, the MBR tank, the clean water tank, the dechlorination tank and the sludge nitrification tank are all assembled by stainless steel modules, and the device has intensive design and compact structure and occupies more than 40 percent of land compared with the conventional integrated sewage treatment equipment; the service life of the stainless steel is up to 50 years; the residual value is high, and the recycling value of the box body is over 80 percent; the sterilization efficiency is high and is improved by 200 percent compared with the conventional hospital sewage treatment equipment; the wastewater treatment device has the advantages of high wastewater treatment efficiency, good sterilization effect, small floor area of the device, short manufacturing period and reduction of manufacturing cost and time cost of hospital wastewater treatment equipment.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 shows a specific arrangement of the apparatus according to the process of the present invention;
the names corresponding to the sequence numbers in the figure are as follows:
the device comprises an aeration dechlorination adjusting tank 1, an anaerobic tank 2, an aerobic tank 3, an anoxic tank 4, a sludge nitrification tank 5, an MBR membrane tank 6, a clear water disinfection tank 7, a dechlorination tank 8, a first pipeline 9, a second pipeline 10, a basket lifting grid 11, a membrane cleaning device 12, a fan 13, a septic tank 14 and a disinfection device 15.
Detailed Description
An emergency treatment process for hospital sewage, which is shown in figure 1 and figure 2: the method comprises the following steps that wastewater enters a septic tank 14 after being pre-sterilized, then the wastewater in the septic tank 14 is lifted by a pump to enter a basket grid 11 and then enters an aeration dechlorination regulating tank 1, then the wastewater sequentially passes through an anaerobic tank 2, an anoxic tank 4 and an aerobic tank 3 and then enters an MBR membrane tank 6 after being subjected to denitrification, after the wastewater enters the MBR membrane tank 6, bottom sludge is discharged into a sludge nitrification tank 5, part of mixed liquid flows back into the anaerobic tank 2, the treated mixed liquid flows out after being filtered by membrane effluent of an MBR membrane device, water flowing out of the MBR membrane device enters a clear water disinfection tank 5 after being subjected to reinforced disinfection, a disinfectant is subjected to secondary disinfection and dechlorination, and sludge discharged into the sludge nitrification tank 5 is periodically sucked and transported for disposal; the aeration dechlorination regulating tank 1, the anaerobic tank 2, the anoxic tank 4, the aerobic tank 3, the sludge nitrification tank 5, the MBR membrane tank 6, the clear water disinfection tank 7 and the dechlorination tank 8 are all formed by assembling stainless steel modules.
The pre-disinfection is to adopt a disinfectant to pre-disinfect the medical sewage containing virus and bacteria, and then the pre-disinfected sewage enters the septic tank 14 to prevent the propagation and spread of harmful virus and bacteria;
the pre-sterilization is carried out at the pipeline opening of the septic tank 14 through a sterilizing device 15;
the aeration dechlorination regulating reservoir 1 is used for regulating and fully balancing water quality and water quantity through aeration dechlorination, so that sewage can uniformly enter a subsequent treatment unit, the shock resistance of the whole system is improved, the design scale of the treatment unit is reduced, the reduction of the operation cost and the influence caused by water quality fluctuation is facilitated, the pre-disinfection residual chlorine is reduced and reaches the standard, and the subsequent biochemical effect is ensured;
the sewage entering the MBR membrane tank 6 is subjected to denitrification by nitrifying bacteria, meanwhile, aerobic microorganisms are used for oxidizing and decomposing organic matters through endogenous respiration to achieve the purpose of reducing COD, and an MBR membrane device immersed in the MBR membrane tank is used for filtering the muddy water mixed liquid so as to further remove SS, oil and escherichia coli;
the oxygen charging equipment in the aerobic tank 3 and the MBR membrane tank 6 adopts low-noise and energy-saving air floating type air blowers for aeration;
enrichment fillers are arranged in each biochemical pool;
the strengthening disinfection is specifically realized by determining the proportion and the adding amount of a sodium persulfate medicament and matching with the UV ultraviolet disinfection of a pipeline through analysis and experiments on actual water quality, and efficiently sterilizing hospital sewage.
Steel modularization treatment facility of hospital's sewage emergency treatment, see fig. 2: an anaerobic tank 2 is arranged on one side of an aeration dechlorination regulating tank 1, the aeration dechlorination regulating tank 1 and the anaerobic tank 2 form a first horizontal row structure, an aerobic tank 3, an anoxic tank 4 and a sludge nitrification tank 5 form a second horizontal row structure, the aeration dechlorination regulating tank 1 and the anaerobic tank 2 are arranged below the aeration dechlorination regulating tank 1 and the MBR membrane tank 6, a clear water disinfection tank 7 and a dechlorination tank 8 form a third horizontal row structure, the first horizontal row structure, the second horizontal row structure and the third horizontal row structure are combined to form a rectangular modular treatment device, the aeration dechlorination regulating tank 1, the anaerobic tank 2, the aerobic tank 3, the anoxic tank 4, the sludge nitrification tank 5, the MBR membrane tank 6, the clear water disinfection tank 7 and the dechlorination tank 8 are assembled through stainless steel modules, an outlet on one side of the aeration dechlorination regulating tank 1 is communicated with an inlet on corresponding to the anaerobic tank 2, an outlet of the anaerobic tank 2 is communicated with an inlet of the second horizontal row anoxic tank 4, and an outlet of the anoxic tank 4 is communicated, the export of good oxygen pond 3 communicates the entry of the MBR membrane cisterna 6 of the third horizontal row, and the membrane export of MBR membrane cisterna 6 communicates the 7 entries of clear water disinfection pond, and the export of clear water disinfection pond 7 communicates to dechlorination pond 8, and the backward flow export of MBR membrane cisterna 6 communicates to the backward flow entry of anaerobism pond 2 through first pipeline 9, and the mud discharge port of MBR membrane cisterna 6 communicates to the entry of mud nitrification tank 5 through second pipeline 10.
A basket grid 11 is arranged at the inlet of the aeration dechlorination regulating tank 1 to ensure the preliminary filtration of the wastewater;
the MBR membrane tank 6 is externally connected with a membrane cleaning device 12 to ensure the normal cleaning of the MBR membrane;
the device also comprises a fan 13, wherein the fan 13 is respectively connected to corresponding bottom areas of the dechlorination regulating tank 1, the anaerobic tank 2, the aerobic tank 3, the anoxic tank 4 and the MBR membrane tank 6 through pipelines.
The beneficial effects are as follows:
1) the sterilization effect is good, and the effluent quality is excellent and stable;
2) the process of the pre-disinfection + dechlorination aeration adjusting tank + AAO + MBR + clear water disinfection tank + dechlorination tank, namely the process of pre-disinfection → dechlorination aeration adjusting tank → anaerobic tank → anoxic tank → aerobic tank → MBR tank → clear water disinfection tank → dechlorination tank is adopted, the process flow is short, the operation and control are flexible and stable, and the solid-liquid separation tank such as sedimentation and filtration does not need to be independently arranged due to the high-efficiency separation effect of the MBR membrane;
3) the sterilization effect is high-efficient and stable. The pre-sterilization can kill part of germs and reduce the propagation and propagation probability of the germs. The enhanced disinfection and the secondary disinfection can ensure the killing effect of pathogenic bacteria and stop the possibility of pathogenic bacteria spreading through sewage.
4) The volume load is high, and the occupied area is small. Biomass in the treatment unit can be maintained at high concentration, so that the volume load is greatly improved, and meanwhile, the hydraulic retention time of the treatment unit is greatly shortened due to the high efficiency of membrane separation;
5) under the condition of alternative operation of anaerobic, anoxic and aerobic, filamentous bacteria cannot be greatly added, the worry of sludge expansion is avoided, SVI values are generally less than 100, the sludge age is long, the sludge discharge is less, the secondary pollution is less, the biological sludge in the membrane bioreactor can reach dynamic balance in operation, the discharge of residual sludge is less, only 30 percent of the discharge of the traditional process is needed, and the sludge treatment cost is low;
6) has strong adaptability to the change of water quality and strong system impact resistance. The loss of various microbial floras is prevented, the growth of bacteria (nitrobacteria and the like) with slow growth speed is facilitated, the retention time of some macromolecular degradation-resistant organic matters is prolonged, the decomposition of the macromolecular degradation-resistant organic matters is facilitated, and various metabolic processes in the system are smoothly carried out;
7) the degree of automation is high, the management is simple, the MBR tank adopts an MBR membrane technology, the process flow is greatly shortened, and the equipment is highly integrated and intelligent through an advanced computer control technology;
8) the biological denitrification effect is good. SRT (sludge age) and HRT (hydraulic retention time) are completely separated, so that interception, growth and propagation of slowly-proliferating nitrobacteria are facilitated, and the system nitrification efficiency is high; the MLSS concentration is high, and the utilization rate of the denitrification matrix is high;
9) and the modular design is adopted, so that the water pump is easy to freely combine according to the water quantity condition. Due to high integration, the MBR tank forms standardized and serialized standard equipment, and can be assembled and installed according to engineering requirements and quickly react.
The working principle is as follows: the aeration dechlorination regulating tank, the anaerobic tank, the anoxic tank, the aerobic tank, the MBR tank, the clean water tank, the dechlorination tank and the sludge nitrification tank are all assembled by stainless steel modules, and the device is designed intensively, has a compact structure and occupies more than 40 percent of the area of the conventional integrated sewage treatment equipment; the service life of the stainless steel is up to 50 years; the residual value is high, and the recycling value of the box body is over 80 percent; the sterilization efficiency is high and is improved by 200 percent compared with the conventional hospital sewage treatment equipment; the wastewater treatment device has the advantages of high wastewater treatment efficiency, good sterilization effect, small floor area of the device, short manufacturing period and reduction of manufacturing cost and time cost of hospital wastewater treatment equipment.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A hospital sewage emergency treatment process is characterized in that: the method comprises the following steps that waste water enters a septic tank after being pre-sterilized, then the waste water in the septic tank is lifted by a pump to enter a basket grid for filtration and then enters an aeration dechlorination regulating tank, then the waste water sequentially passes through an anaerobic tank, an anoxic tank and an aerobic tank and then enters an MBR membrane tank after being denitrified, after the waste water enters the MBR membrane tank, bottom sludge is discharged into a sludge nitrification tank, part of mixed liquid flows back into the anaerobic tank, the treated mixed liquid flows out after being filtered by membrane outlet water of an MBR membrane device, the water flowing out through the membrane of the MBR membrane device enters a clear water disinfection tank after being reinforced and sterilized, a disinfectant is secondarily sterilized and discharged after dechlorination, and sludge discharged into the sludge nitrification tank is periodically sucked and transported for disposal; the aeration dechlorination regulating tank, the anaerobic tank, the anoxic tank, the aerobic tank, the sludge nitrification tank, the MBR membrane tank, the clear water disinfection tank and the dechlorination tank are all assembled by stainless steel modules.
2. The hospital wastewater emergency treatment process according to claim 1, characterized in that: the pre-disinfection is to adopt a disinfectant to pre-disinfect medical sewage containing viruses and bacteria, and then the pre-disinfected sewage enters the septic tank to prevent harmful viruses and bacteria from propagating and spreading.
3. The hospital wastewater emergency treatment process according to claim 2, characterized in that: the pre-sterilization is carried out at the pipeline opening of the septic tank.
4. The hospital wastewater emergency treatment process according to claim 1, characterized in that: the aeration dechlorination adjusting tank is used for adjusting the water quality and water quantity to be fully balanced through aeration dechlorination, so that sewage can uniformly enter the subsequent treatment unit, the shock resistance of the whole system is improved, the design scale of the treatment unit is reduced, the reduction of the operation cost and the influence caused by water quality fluctuation are facilitated, the pre-disinfection residual chlorine is reduced to reach the standard, and the subsequent biochemical effect is ensured.
5. The hospital wastewater emergency treatment process according to claim 4, characterized in that: the sewage that gets into MBR membrane cisterna realizes the denitrogenation effect through nitrobacteria's nitrification, and aerobic microorganism carries out oxidative decomposition to the organic matter through endogenous breathing and reaches the purpose that reduces COD simultaneously, and the MBR membrane device of submergence installation in the membrane biological reaction pond carries out filtration treatment to muddy water mixed liquid, further gets rid of SS, oil, escherichia coli.
6. The hospital wastewater emergency treatment process according to claim 1, characterized in that: and the oxygenation devices in the aerobic tank and the MBR membrane tank adopt low-noise and energy-saving air floating blowers for aeration.
7. The hospital wastewater emergency treatment process according to claim 1, characterized in that: the strengthening disinfection is specifically realized by determining the proportion and the adding amount of a sodium persulfate medicament and matching with the UV ultraviolet disinfection of a pipeline through analysis and experiments on actual water quality, and efficiently sterilizing hospital sewage.
8. Steel modularization treatment facility of hospital's sewage emergency treatment, its characterized in that: an anaerobic tank is arranged on one side of the aeration dechlorination regulating tank, the aeration dechlorination regulating tank and the anaerobic tank form a first horizontal structure, an aerobic tank, an anoxic tank and a sludge nitrification tank form a second horizontal structure and are arranged below the aeration dechlorination regulating tank and the anaerobic tank, an MBR membrane tank, a clear water disinfection tank and a dechlorination tank form a third horizontal structure, the first horizontal structure, the second horizontal structure and the third horizontal structure are combined to form a rectangular modular treatment device, the aeration dechlorination regulating tank, the anaerobic tank, the aerobic tank, the anoxic tank, the sludge nitrification tank, the MBR membrane tank, the clear water disinfection tank and the dechlorination tank are all assembled by stainless steel modules, one side outlet of the aeration dechlorination regulating tank is communicated with the corresponding side inlet of the anaerobic tank, an outlet of the anaerobic tank is communicated with an inlet of the anoxic tank arranged on tank, an outlet of the anoxic tank is communicated with an inlet of the aerobic tank, the outlet of the aerobic tank is communicated with the inlet of a third transverse MBR membrane tank, the membrane outlet of the MBR membrane tank is communicated with the inlet of the clear water disinfection tank, the outlet of the clear water disinfection tank is communicated to the dechlorination tank, the reflux outlet of the MBR membrane tank is communicated to the reflux inlet of the anaerobic tank through a first pipeline, and the sludge discharge port of the MBR membrane tank is communicated to the inlet of the sludge nitrification tank through a second pipeline.
9. The modular steel treatment equipment for hospital sewage emergency treatment according to claim 8, characterized in that: and a basket-lifting grid is arranged at the inlet of the aeration dechlorination regulating tank.
10. The modular steel treatment equipment for hospital sewage emergency treatment according to claim 8, characterized in that: the device also comprises a fan, wherein the fan is respectively connected to corresponding bottom areas of the dechlorination regulating tank, the anaerobic tank, the aerobic tank, the anoxic tank and the MBR membrane tank through pipelines.
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| CN202110008924.6A CN112777865A (en) | 2021-01-05 | 2021-01-05 | Hospital sewage emergency treatment process and corresponding steel modular treatment equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582460A (en) * | 2021-08-13 | 2021-11-02 | 广州博芳环保科技股份有限公司 | Medical sewage treatment method |
| CN113582461A (en) * | 2021-08-13 | 2021-11-02 | 广州博芳环保科技股份有限公司 | Intelligent medical sewage treatment process |
| CN115385530A (en) * | 2022-09-14 | 2022-11-25 | 苏州吉如发环保科技有限公司 | Sewage treatment system |
| CN117865375A (en) * | 2023-11-21 | 2024-04-12 | 广州市水之道环境科技有限公司 | Integrated treatment equipment for antibiotic sewage and sewage treatment method thereof |
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2021
- 2021-01-05 CN CN202110008924.6A patent/CN112777865A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582460A (en) * | 2021-08-13 | 2021-11-02 | 广州博芳环保科技股份有限公司 | Medical sewage treatment method |
| CN113582461A (en) * | 2021-08-13 | 2021-11-02 | 广州博芳环保科技股份有限公司 | Intelligent medical sewage treatment process |
| CN115385530A (en) * | 2022-09-14 | 2022-11-25 | 苏州吉如发环保科技有限公司 | Sewage treatment system |
| CN117865375A (en) * | 2023-11-21 | 2024-04-12 | 广州市水之道环境科技有限公司 | Integrated treatment equipment for antibiotic sewage and sewage treatment method thereof |
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