CN107043199A - A kind of sewage disposal of hospital and its recovery method as resource - Google Patents
A kind of sewage disposal of hospital and its recovery method as resource Download PDFInfo
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- CN107043199A CN107043199A CN201710313790.2A CN201710313790A CN107043199A CN 107043199 A CN107043199 A CN 107043199A CN 201710313790 A CN201710313790 A CN 201710313790A CN 107043199 A CN107043199 A CN 107043199A
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- sludge
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- water
- waste water
- nitrogen
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000010865 sewage Substances 0.000 title claims abstract description 27
- 238000011084 recovery Methods 0.000 title claims abstract description 26
- 239000010802 sludge Substances 0.000 claims abstract description 111
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000002351 wastewater Substances 0.000 claims abstract description 56
- 241000894006 Bacteria Species 0.000 claims abstract description 28
- 238000011282 treatment Methods 0.000 claims abstract description 24
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000011574 phosphorus Substances 0.000 claims abstract description 23
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 23
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 239000005416 organic matter Substances 0.000 claims abstract description 11
- 238000010992 reflux Methods 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 48
- 230000029087 digestion Effects 0.000 claims description 33
- 229910052757 nitrogen Inorganic materials 0.000 claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 229910052799 carbon Inorganic materials 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 10
- 239000006228 supernatant Substances 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 10
- 229920000388 Polyphosphate Polymers 0.000 claims description 9
- 229920000037 Polyproline Polymers 0.000 claims description 9
- 239000001205 polyphosphate Substances 0.000 claims description 9
- 235000011176 polyphosphates Nutrition 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 239000003337 fertilizer Substances 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 7
- 244000005700 microbiome Species 0.000 claims description 7
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 6
- 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 claims description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 6
- CKMXBZGNNVIXHC-UHFFFAOYSA-L ammonium magnesium phosphate hexahydrate Chemical compound [NH4+].O.O.O.O.O.O.[Mg+2].[O-]P([O-])([O-])=O CKMXBZGNNVIXHC-UHFFFAOYSA-L 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 claims description 5
- 239000010419 fine particle Substances 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- -1 polypropylene ring Polymers 0.000 claims description 4
- 239000010801 sewage sludge Substances 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 230000000593 degrading effect Effects 0.000 claims description 3
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 3
- 238000001727 in vivo Methods 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
- 238000001471 micro-filtration Methods 0.000 claims description 3
- 238000005204 segregation Methods 0.000 claims description 3
- 230000004720 fertilization Effects 0.000 claims description 2
- 239000012510 hollow fiber Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000000191 radiation effect Effects 0.000 claims description 2
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 2
- VYFDHJMUUZUGGZ-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3].[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3].[NH6+3] VYFDHJMUUZUGGZ-UHFFFAOYSA-N 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 201000010099 disease Diseases 0.000 abstract description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract description 4
- 238000004065 wastewater treatment Methods 0.000 abstract description 4
- 239000006227 byproduct Substances 0.000 abstract description 3
- 208000015181 infectious disease Diseases 0.000 abstract description 3
- 230000002458 infectious effect Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000001890 transfection Methods 0.000 description 2
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001336 alkenes Chemical group 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000006298 dechlorination reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000002703 mutagenesis Methods 0.000 description 1
- 231100000350 mutagenesis Toxicity 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- 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
- 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
- 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
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- 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
-
- 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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Physical Water Treatments (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to sewage disposal of hospital and its recovery method as resource, the existing universal denitrogenation dephosphorizing of sewage disposal of hospital technique can effectively be solved not up to standard, not the problem of excess sludge does not have innoxious stabilization processes and does not account for effluent reuse and resource reclaim, its solve technical scheme be, mixing pit water outlet further goes to denitrogenate into A/O/A biological treatment systems, phosphorus and organic matter, the water outlet of A/O/A biological treatment systems enters MBR reactors, carry out intensified denitrification and dephosphorization processing, simultaneously in MBR reactors sludge reflux to A/O/A biological treatment systems, the water outlet of MBR reactors enters ultraviolet disinfection pond, kill disease caused by infectious water bacterium, the water outlet of ultraviolet disinfection pond is temporary into clear water reserviors, it is most of to can be used for lawn greening, flush the toilet, remainder can qualified discharge, the inventive method realizes the recovery of resource and the energy in hospital wastewater, realize the innoxious of sewage disposal of hospital byproduct in process thing simultaneously, recycling and minimizing purpose, it is the innovation on method of wastewater treatment.
Description
Technical field
The present invention relates to technical field of waste water processing, particularly a kind of sewage disposal of hospital and its recovery method as resource.
Background technology
Hospital wastewater is main by from inpatient department, clinic, laboratory, dining room, bathroom, toilet, medicament chamber, laundry
The sewage composition discharged Deng place.In the waste water in addition to containing compositions such as substantial amounts of organic matter, nitrogen, phosphorus, also containing substantial amounts of disease
The harmful microorganisms such as bacterium, virus and parasite, if the waste water is discharged into water body without effective processing, can have a strong impact on peripheral ring
Border, jeopardizes the healthy of people.
To ensure that the social life that hospital wastewater does not give people causes harm, country has formulated hospital wastewater strict row
Standard is put, but it is not in place due to supervising, and most of hospital wastewater discharges do not reach national standard, and many companies also all existed in recent years
Develop sewage disposal of hospital new technology.For example, publication number CN103319056A patent of invention《A kind of Hospital Sewage Treatment system
System》The handling process of the hospital wastewater of proposition is：Waste water flow direction passes sequentially through grille well, pre-sterilization pond, the change excrement of pipeline connection
Pond, preaeration regulating reservoir, anoxic pond, biological contact oxidation pond, vertical sedimentation tank, quantitative pond, purifier, disinfecting tank,
Discharged behind dechlorination pond, the dechlorinated pond of hospital sewage after processing.Publication number CN104944707A patent of invention《At hospital sewage
Reason system and processing method》The technique of proposition is：It is anti-that sewage passes sequentially through grid, hydrolysis acidification pool, anaerobic pond, Aerobic Pond, MBR
Water outlet after device, processing is answered to be discharged from MBR reactors.Understand that technique described in CN103319056A can have denitrogenation by carefully analyzing
Phosphor-removing effect is unstable and goes out the problem of aqueous suspension is not up to standard, and technique described in CN104944707A can have denitrogenation dephosphorizing not
The problem of stable and water outlet coliform is exceeded.
At present, the existing universal denitrogenation dephosphorizing of sewage disposal of hospital technique is up to standard, excess sludge does not have innoxious stabilisation
Effluent reuse and resource reclaim are handled and do not accounted for, how to be reclaimed as far as possible under the premise of wastewater treatment qualified discharge is ensured
It can be turned waste into wealth using resource, significantly reduce the technical problem that cost for wastewater treatment is current urgent need to resolve.
The content of the invention
For above-mentioned situation, to solve the defect of prior art, the purpose of the present invention is just to provide at a kind of hospital wastewater
Reason and its recovery method as resource, can effectively solve that the existing universal denitrogenation dephosphorizing of sewage disposal of hospital technique is up to standard, excess sludge does not have
The problem of having innoxious stabilization processes and not accounting for effluent reuse and resource reclaim.
The technical scheme that the present invention is solved is, mixing pit water outlet further goes to denitrogenate into A/O/A biological treatment systems, phosphorus
And organic matter, the water outlet of A/O/A biological treatment systems enter MBR bioreactors, carry out intensified denitrification and dephosphorization processing, while MBR
Sludge reflux supplements the sludge concentration and microbe species of biosystem to A/O/A biological treatment systems in reactor.MBR is anti-
Answer device water outlet to enter ultraviolet disinfection pond, kill disease caused by infectious water bacterium, the water outlet of ultraviolet disinfection pond is temporary into clear water reserviors, largely can be used for
Lawn greening, flush the toilet, remainder can qualified discharge.MBR reactor excess sludges are pumped into sludge concentration tank, concentrate simultaneously
It is back to sludge after mixing pit, concentration and enters sludge digestion tank progress Anaerobic Digestion, the biogas that digester is produced can be used for
Resident living and hospital's heating system, remaining digested sludge carry out outward transport processing, dewatering and filtering mud liquid after sludge dewatering
Mixing pit is back to after recovery nitrogen phosphorus to continue with.
The inventive method realizes resource in hospital wastewater（Clear water and nitrogen P elements after processing）With the energy（Biogas）Return
Receive, while realizing sewage disposal of hospital byproduct in process thing（Excess sludge）Innoxious, recycling and minimizing purpose, be useless
Innovation on method for treating water.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing.
Provided by Fig. 1, the present invention comprises the following steps：
1）Supernatant effluent from hospital's septic tank removes substantial amounts of fine particle and suspension by fine fack, it is to avoid follow-up
Line clogging and the normal operation of processing equipment；
2）Waste water after being filtered through fine fack enters mixing pit, carries out waste water quenched；
3）Mixing pit water outlet enters the anaerobic pond of A/O/A biological treatment systems（A）, the poly- phosphorus from the sludge of MBR reactors backflow
Bacterium largely releases phosphorus and stores internal carbon source by degrading waste water organic matter under anaerobic；It is biological that waste water initially enters A/O/A
The anaerobic pond of processing system（A）The sludge flowed back with MBR reactors is mixed, and there is polyP bacteria in anaerobic condition and largely in sludge
Largely release phosphorus in the presence of machine thing and store internal carbon source；
4）Anaerobic pond water outlet enters the Aerobic Pond of A/O/A biological treatment systems（O）, Aerobic Pond is interior to be filled out filled with polypropylene ring
Nitrifier can be enriched with material, filler, nitrifier abundance is improved, under aerobic condition, activated sludge degraded Organic substance in water is simultaneously real
Existing activated sludge propagation, organic matter is transferred in active sludge microorganism body, realizes waste water organics removal, and nitrifier is by ammonia
Nitrogen is converted into nitrate nitrogen and realizes the ammonia nitrogen effect that removes, and polyP bacteria utilizes the internal carbon source excessive consumption Phosphorus From Wastewater acid stored in vivo
Salt, phosphate transfection is moved on to dephosphorization in waste water is realized in polyP bacteria body；
5）Aerobic Pond water outlet enters the anoxic pond of A/O/A biological treatment systems（A）, it is useless that anoxic pond reception anaerobic pond supply comes
Water, this strand of waste water provides part carbon source for anoxic pond, under anoxic conditions, and the denitrifying bacterium in anoxic pond utilizes carbon source by nitre state
Nitrogen is converted into nitrogen discharge into air, realizes denitrogenation of waste water；
6）Anoxic pond water outlet enters MBR reactors, and the micro porous filtration effect of MBR films can block the most of microbe in water
Cut, it is ensured that MBR delivery turbidities and suspension are up to standard；
7）MBR water outlets enter ultraviolet disinfection pond, in pond under the radiation effects of ultraviolet, and the microorganism remained in water is killed
Go out, it is ensured that water outlet coliform is up to standard, the water outlet of ultraviolet disinfection pond enters clear water reserviors and kept in, most of clear water is used to flush the toilet and institute
Interior greening, redundance clear water qualified discharge；
8）Excess sludge is periodically taken to sludge concentration tank in MBR reactors, realizes that sludge condensation reduces sludge volume, sludge condensation
Pond supernatant is back to mixing pit and continued with；
9）Sludge concentration tank thickened sludge enters sludge digestion tank, in the case where anaerobic digestion bacterium acts on, by the organic matter in sludge
Be converted into biogas, realize sludge reduction, sludge digestion tank it is long when hot conditions under, make sewage sludge harmlessness after digestion stable
Change, the biogas that sludge digestion tank is produced can be used for resident's heat supply as clean fuel after collection and winter digester is heated；
10）Sludge digestion tank digestion after sludge handled into sludge dewatering equipment, by sludge dewatering to moisture content below 80% after
Outward transport is handled；
11）Sludge dewatering equipment pressing filtering liquid enters recovery of nitrogen and phosphorus pond, in recovery of nitrogen and phosphorus pond, by adding disodium hydrogen phosphate, magnesium chloride
Solution mixed processing, it is 1 to make the magnesium after dosing in waste water, nitrogen, phosphorus molar ratio range:1:0.8-1.2:1:1, by the nitrogen phosphorus in water
It is converted into guanite（Mg（NH4）PO4•6H2O）Reclaim, guanite can be used for afforestation and farmland to apply as slow-release fertilizer
Fertilizer, recovery of nitrogen and phosphorus pond supernatant is back to mixing pit and further handled.
In order to ensure using effect, a width of 1 ~ 5mm of described fine fack removes substantial amounts of fine particle and suspension in waste water
Thing, it is to avoid subsequent pipeline is blocked, it is ensured that the normal operation of processing equipment.
Described MBR reactors sludge reflux is to anaerobic pond reflux ratio between 30% ~ 100%.
Described Aerobic Pond（O）Interior filling pond holds can be enriched with nitrification on the polypropylene ring filler of 30% ~ 70% ratio, filler
Bacterium, improves nitrifier abundance, under aerobic condition, and activated sludge can be carried out with efficient degradation Organic substance in water, Simultaneous Nitrification bacterium
Nitrification, is nitrate nitrogen by mineralized nitrogen, reaches organics removal and removes ammonia nitrogen purpose.
The described effluent segregation of anaerobic pond 5% ~ 20% can provide carbon source to anoxic pond for anoxic pond denitrifying bacterium, it is ensured that anti-
Nitrate nitrogen is converted into the effect of nitrogen by nitrifier, reaches denitrogenation of waste water purpose.
Described MBR reactors（Membrane bioreactor）, MBR films are microfiltration membranes or milipore filter, and membrane module form is board-like
Or hollow fiber form；Under aerobic conditions, the high-concentration activated sludge being enriched with pond can further reduce the organic matter in water
Simultaneously further to strengthen ammonia nitrogen removal, the filtration of MBR films can remove most sludge and suspension, it is ensured that water outlet water
Matter is reliable and stable.
Described ultraviolet disinfection pond ultraviolet wavelength is between 240 ~ 280nm, and UV irradiation time is not less than 10s, because
MBR film delivery turbidities are low, are conducive to using disinfection by ultraviolet light, and can not only thoroughly kill microorganism in water using ultraviolet disinfection also keeps away
The cumbersome and potential safety hazard of chlorination technique is exempted from, water outlet is temporary into clear water reserviors after sterilization, clear water water can be used for rushing
Lavatory and greening.
Described sludge concentration tank concentration time is less than 6 hours, and sludge digestion tank temperature is 30 ~ 60 degree；MBR reactors are high
Concentration sludge enters sludge digestion tank after sludge concentration tank concentration, and anaerobic bacteria can will be organic in sludge in sludge digestion tank
Thing is converted into biogas, and sludge digestion tank can kill harmful levels of pathogens and realize that sewage sludge harmlessness is stabilized, while sludge quantity after digestion
Sludge reduction can be realized by greatly reducing, and biogas can be used for winter digester as fuel and heat or resident's heat supply.
Embodiment 1
1）Supernatant effluent from hospital's septic tank removes substantial amounts of fine particle and suspension by 2mm fine facks, it is to avoid
Subsequent pipeline blocks the normal operation with processing equipment；
2）Waste water after being filtered through 2mm fine facks enters mixing pit, carries out waste water quenched；
3）Mixing pit water outlet enters the anaerobic pond of A/O/A biological treatment systems（A）, the anaerobic pond of A/O/A biological treatment systems connects
PolyP bacteria in the activated sludge that MBR reactors reflux ratio is 50%, sludge is received to release phosphorus under anaerobic and by degrading waste water have
Machine thing stores internal carbon source；
4）Anaerobic pond water outlet enters the Aerobic Pond of A/O/A biological treatment systems（O）, poly- the third of 50% pond of the interior filling of Aerobic Pond appearance
Nitrifier can be enriched with alkene ring filler, filler, nitrifier abundance is improved, it is organic in activated sludge degradation water under aerobic condition
Thing simultaneously realizes that activated sludge is bred, and organic matter is transferred in active sludge microorganism body, waste water organics removal is realized, nitrified
Mineralized nitrogen is that nitrate nitrogen realizes the ammonia nitrogen effect that removes by bacterium, and polyP bacteria is using in the internal carbon source excessive consumption waste water stored in vivo
Phosphate, phosphate transfection is moved on to dephosphorization in waste water is realized in polyP bacteria body；
5）Aerobic Pond water outlet enters the anoxic pond of A/O/A biological treatment systems（A）, the ratio that anoxic pond reception anaerobic pond shunting comes
Example is 10% waste water, and this strand of waste water provides part carbon source for anoxic pond, under anoxic conditions, the denitrifying bacterium profit in anoxic pond
Nitrate nitrogen is converted into nitrogen discharge into air with carbon source, denitrogenation of waste water is realized；
6）Anoxic pond water outlet enters MBR reactors（Membrane bioreactor）, MBR reactors are interior to be provided with board-like micro-filtration membrane module,
The 0.01-5um micro porous filtrations effect of MBR films, which intercepts most of microbe, simultaneously ensures that MBR delivery turbidities and suspension are up to standard；
7）MBR water outlets enter ultraviolet disinfection pond, and sterilization pool is carried out disinfection processing using 254nm ultraviolets irradiation 10s, it is ensured that water outlet
Coliform is up to standard, the water outlet of ultraviolet disinfection pond enter clear water reserviors keep in, most of clear water be used for flush the toilet and institute in greening, it is unnecessary
Clear water can be discharged directly；
8）The excess sludge that MBR reactors are produced enters sludge concentration tank and concentrated 4 hours, realizes that sludge condensation reduces sludge body
Product, sludge concentration tank supernatant is back to mixing pit and continued with；
9）Sludge concentration tank thickened sludge enters 30 degree of sludge digestion tanks, in the case where anaerobic digestion bacterium acts on, by having in sludge
Machine thing is converted into biogas, realizes sludge reduction, sludge digestion tank it is long when hot conditions under, make sewage sludge harmlessness after digestion steady
Fixedization；The biogas that sludge digestion tank is produced can be used for resident's heat supply as clean fuel after collection and winter digester is heated；
10）Sludge digestion tank digestion after sludge handled into sludge dewatering equipment, by sludge dewatering to moisture content below 80% after
Outward transport is handled；
11）Sludge dewatering equipment pressing filtering liquid enters recovery of nitrogen and phosphorus pond, in recovery of nitrogen and phosphorus pond, by adding disodium hydrogen phosphate and magnesium chloride
Solution mixed processing, it is 1 to make the magnesium after dosing in waste water, nitrogen, phosphorus molar ratio range:1:0.8, it is bird by the nutrient discovery in water
Coprolite（Mg（NH4）PO4•6H2O）Reclaim, guanite can be used for afforestation and farmland fertilization as slow-release fertilizer, and nitrogen phosphorus is returned
Receives pond supernatant is back to mixing pit and further handled.
The service condition of the present invention is to remove some tiny particles and suspension in water by fine fack after wastewater collection
Thing, carries out waste water quenched into mixing pit.Mixing pit water outlet further goes to denitrogenate into A/O/A biological treatment systems, phosphorus and have
Machine thing, A/O/A biological treatment systems water outlet enters MBR bioreactors, carries out intensified denitrification and dephosphorization processing, while MBR reacts
Sludge reflux supplements the sludge concentration and microbe species of biosystem to A/O/A biological treatment systems in device.MBR reactors
Water outlet enters ultraviolet disinfection pond, kills disease caused by infectious water bacterium, and the water outlet of ultraviolet disinfection pond is temporary into clear water reserviors, most of to can be used for lawn
Afforest, flush the toilet, remainder can qualified discharge.MBR reactor excess sludges are pumped into sludge after sludge concentration tank, concentration simultaneously
Carry out digestion process into anaerobic digester, sludge carries out sludge press filtration after digestion process, pressing filtering liquid reclaim after nitrogen P elements and
Sludge condensation supernatant is back to mixing pit and handled again together.The biogas that digester is produced can be used for resident as clean fuel
Life and hospital's heating system, remaining digested sludge outward transport after sludge dewatering are handled, and the nitrogen phosphorus of recovery can be as organic slow
Releasing fertilizer is used for afforestation and farmland.
The present invention compared with prior art, with advantages below：
1st, hospital wastewater is used can be enriched with nitrifier on improved biological treatment system A/O/A, the system Aerobic Pond filler, improve
Nitrifier abundance, carries out dephosphorization processing first in addition, then carries out denitrogenation, while anaerobic pond effluent segregation to anoxic pond is denitrification
Bacterium provides organic carbon source, and dephosphorization and denitrogenation are independently separated, high-efficient denitrification and dephosphorization can be achieved, COD purpose is gone.
2nd, the excess sludge produced in wastewater treatment process passes through Sludge Digestion, it is possible to achieve sludge it is innoxious,
Stabilisation, minimizing and recycling.
3rd, MBR water outlets are further carried out disinfection processing using ultraviolet, and not only effect is good, it is thus also avoided that traditional chlorination is grasped
Make cumbersome and be also easy to produce three causes（Carcinogenic, teratogenesis, mutagenesis）The problem of harmful substance.
4th, waste water has reached related Treated sewage reusing standard after processing, is back to and flushes the toilet and afforestation can be reduced originally
The usage amount of water.
5th, the biogas that Sludge Digestion is produced is used for resident's heat supply and the heating of winter digester as clean fuel to subtract
The use of few municipal administration natural gas.
6th, the guanite that the recovered processing of nitrogen P elements in waste water is produced can be used for afforestation as slow-release fertilizer
And farmland, reduce the usage amount of chemical fertilizer.
7th, resource in hospital wastewater is realized（Clear water and nitrogen P elements after processing）With the energy（Biogas）Recovery, simultaneously realize
Sewage disposal of hospital byproduct in process thing（Excess sludge）Innoxious, recycling and minimizing purpose.
The present invention not only realizes the harmless treatment of hospital wastewater, while realizing the effective of resource and the energy in hospital wastewater
Reclaim and utilize, improve the treatment effect of hospital wastewater, improve the working environment and surrounding enviroment of hospital, and entirety takes up an area face
It is small, invest relatively low with operating cost, it is easy to accomplish equipment, sewage disposal of hospital is preferably applied to, in being actually also applied for
Small-scale cities and towns and new rural village sanitary sewage disposal, therefore with preferable application prospect.
Claims (8)
1. a kind of sewage disposal of hospital and its recovery method as resource, it is characterised in that comprise the following steps：
1）Supernatant effluent from hospital's septic tank removes substantial amounts of fine particle and suspension by fine fack, it is to avoid follow-up
Line clogging and the normal operation of processing equipment；
2）Waste water after being filtered through fine fack enters mixing pit, carries out waste water quenched；
3）Mixing pit water outlet enters the anaerobic pond of A/O/A biological treatment systems, and polyP bacteria exists in the sludge flowed back from MBR reactors
Largely release phosphorus under anaerobic condition and internal carbon source is stored by degrading waste water organic matter；Waste water initially enters A/O/A biological treatments
The sludge that the anaerobic pond of system flows back with MBR reactors is mixed, and polyP bacteria is deposited in anaerobic condition and large amount of organic in sludge
A large amount of release phosphorus lower and store internal carbon source；
4）Anaerobic pond water outlet, which is entered, is filled with polypropylene ring filler in the Aerobic Pond of A/O/A biological treatment systems, Aerobic Pond, fill out
Nitrifier can be enriched with material, nitrifier abundance is improved, under aerobic condition, activated sludge degraded Organic substance in water simultaneously realizes activity
Sludge growth, organic matter is transferred in active sludge microorganism body, realizes waste water organics removal, and nitrifier is by mineralized nitrogen
Realized for nitrate nitrogen and remove ammonia nitrogen effect, polyP bacteria is using the internal carbon source excessive consumption phosphate in waste water stored in vivo, by phosphorus
Hydrochlorate, which is transferred in polyP bacteria body, realizes dephosphorization in waste water；
5）Aerobic Pond water outlet enters the anoxic pond of A/O/A biological treatment systems, and anoxic pond receives the waste water that anaerobic pond supply comes,
This strand of waste water provides part carbon source for anoxic pond, under anoxic conditions, and the denitrifying bacterium in anoxic pond utilizes carbon source by nitrate nitrogen
Nitrogen discharge is converted into air, denitrogenation of waste water is realized；
6）Anoxic pond water outlet enters MBR reactors, and the micro porous filtration effect of MBR films can block the most of microbe in water
Cut, it is ensured that MBR delivery turbidities and suspension are up to standard；
7）MBR water outlets enter ultraviolet disinfection pond, in pond under the radiation effects of ultraviolet, and the microorganism remained in water is killed
Go out, it is ensured that water outlet coliform is up to standard, the water outlet of ultraviolet disinfection pond enters clear water reserviors and kept in, most of clear water is used to flush the toilet and institute
Interior greening, redundance clear water qualified discharge；
8）Excess sludge is periodically taken to sludge concentration tank in MBR reactors, realizes that sludge condensation reduces sludge volume, sludge condensation
Pond supernatant is back to mixing pit and continued with；
9）Sludge concentration tank thickened sludge enters sludge digestion tank, in the case where anaerobic digestion bacterium acts on, by the organic matter in sludge
Be converted into biogas, realize sludge reduction, sludge digestion tank it is long when hot conditions under, make sewage sludge harmlessness after digestion stable
Change, the biogas that sludge digestion tank is produced can be used for resident's heat supply as clean fuel after collection and winter digester is heated；
10）Sludge digestion tank digestion after sludge handled into sludge dewatering equipment, by sludge dewatering to moisture content below 80% after
Outward transport is handled；
11）Sludge dewatering equipment pressing filtering liquid enters recovery of nitrogen and phosphorus pond, in recovery of nitrogen and phosphorus pond, by adding disodium hydrogen phosphate, magnesium chloride
Solution mixed processing, it is 1 to make the magnesium after dosing in waste water, nitrogen, phosphorus molar ratio range:1:0.8-1.2:1:1, by the nitrogen phosphorus in water
Guanite recovery is converted into, guanite can be used for afforestation and farmland fertilization, recovery of nitrogen and phosphorus pond supernatant as slow-release fertilizer
Liquid is back to mixing pit and further handled.
2. sewage disposal of hospital according to claim 1 and its recovery method as resource, it is characterised in that described fine fack is wide
For 1 ~ 5mm, remove substantial amounts of fine particle and suspension in waste water, it is to avoid subsequent pipeline is blocked, it is ensured that processing equipment it is normal
Operation.
3. sewage disposal of hospital according to claim 1 and its recovery method as resource, it is characterised in that described MBR reactions
Device sludge reflux to anaerobic pond reflux ratio be 30% ~ 100%.
4. sewage disposal of hospital according to claim 1 and its recovery method as resource, it is characterised in that in described Aerobic Pond
Fill the polypropylene ring filler that pond holds 30% ~ 70% ratio.
5. sewage disposal of hospital according to claim 1 and its recovery method as resource, it is characterised in that described anaerobic pond 5%
~ 20% effluent segregation can provide carbon source, it is ensured that nitrate nitrogen is converted into nitrogen by denitrifying bacterium to anoxic pond for anoxic pond denitrifying bacterium
The effect of gas, reaches denitrogenation of waste water purpose.
6. sewage disposal of hospital according to claim 1 and its recovery method as resource, it is characterised in that described MBR reactions
The MBR films of device are microfiltration membranes or milipore filter, and membrane module form is board-like or hollow fiber form.
7. sewage disposal of hospital according to claim 1 and its recovery method as resource, it is characterised in that described ultraviolet disinfection
Pond ultraviolet wavelength is between 240 ~ 280nm, and UV irradiation time is not less than 10s.
8. sewage disposal of hospital according to claim 1 and its recovery method as resource, it is characterised in that described sludge condensation
Pond concentration time is less than 6 hours, and sludge digestion tank temperature is 30 ~ 60 degree.
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| CN109231686A (en) * | 2018-10-18 | 2019-01-18 | 云南惟绿环保科技有限公司 | A kind of trade effluent dedicated processes system |
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| CN111606502A (en) * | 2020-05-18 | 2020-09-01 | 成都市科农动物无害化处置有限公司 | Harmless wastewater treatment process and system for livestock and poultry died of diseases |
| CN111943364A (en) * | 2020-08-03 | 2020-11-17 | 昆明金泽实业有限公司 | Method for eliminating influence of disinfectant on biochemical system by using excess sludge |
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