CN106430549A - Sewage ordered treatment method - Google Patents
Sewage ordered treatment method Download PDFInfo
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- CN106430549A CN106430549A CN201610794179.1A CN201610794179A CN106430549A CN 106430549 A CN106430549 A CN 106430549A CN 201610794179 A CN201610794179 A CN 201610794179A CN 106430549 A CN106430549 A CN 106430549A
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- 238000000034 method Methods 0.000 title claims abstract description 72
- 239000010865 sewage Substances 0.000 title claims abstract description 63
- 238000011282 treatment Methods 0.000 title claims abstract description 58
- 238000012545 processing Methods 0.000 claims abstract description 109
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000010802 sludge Substances 0.000 claims abstract description 51
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 15
- 239000011574 phosphorus Substances 0.000 claims abstract description 15
- -1 phosphorus compound Chemical class 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims description 40
- 230000008569 process Effects 0.000 claims description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 238000005273 aeration Methods 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 7
- 159000000013 aluminium salts Chemical class 0.000 claims description 7
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 7
- 239000000571 coke Substances 0.000 claims description 7
- 238000009996 mechanical pre-treatment Methods 0.000 claims description 7
- 238000005189 flocculation Methods 0.000 claims description 6
- 230000016615 flocculation Effects 0.000 claims description 6
- 150000002505 iron Chemical class 0.000 claims description 6
- 241000243328 Hydridae Species 0.000 claims description 4
- 229910000514 dolomite Inorganic materials 0.000 claims description 4
- 239000010459 dolomite Substances 0.000 claims description 4
- 238000004148 unit process Methods 0.000 claims description 3
- 229910017464 nitrogen compound Inorganic materials 0.000 claims description 2
- 150000002830 nitrogen compounds Chemical class 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 1
- 238000003763 carbonization Methods 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 150000001722 carbon compounds Chemical class 0.000 abstract description 5
- 239000003651 drinking water Substances 0.000 abstract description 2
- 235000020188 drinking water Nutrition 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000005352 clarification Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000010841 municipal wastewater Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 241000108664 Nitrobacteria Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- OMKPRTQVLDBJSG-UHFFFAOYSA-J calcium;magnesium;dicarbonate;hydrate Chemical compound [OH-].[Mg+2].[Ca+2].OC([O-])=O.[O-]C([O-])=O OMKPRTQVLDBJSG-UHFFFAOYSA-J 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009294 enhanced biological phosphorus removal Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007953 anoxia Effects 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000000721 bacterilogical effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940079593 drug Drugs 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
- 229940088597 hormone Drugs 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- IBIRZFNPWYRWOG-UHFFFAOYSA-N phosphane;phosphoric acid Chemical compound P.OP(O)(O)=O IBIRZFNPWYRWOG-UHFFFAOYSA-N 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater 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
- 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
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- 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
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Water Treatment By Sorption (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention provides a sewage ordered treatment method, and relates to the technical field of sewage treatment. The method mainly comprises a section A treatment unit and a section B treatment unit. In outlet water from the section A treatment unit, phosphorus compound content reaches the minimum, and carbon compound concentration is reduced. The outlet water from the section A treatment unit enters the section B treatment unit for subsequent processing. In the section B treatment unit, active sludge concentration is increased. In outlet water from the section B treatment unit, residual pollutant, especially winter nitrogen-containing compound concentration, is greatly lower than that of the outlet water of existing sewage treatment plants. The quality of the outlet water can directly reach the requirements for being discharged into rivers and lakes. After the section B treatment unit, section C and section D treatments can be continued. In the outlet water from the section C treatment unit, phosphorus compound content is even less. Outlet water from the section D treatment unit can satisfy the requirements for most reservoirs or drinking water sources. According to the method, the operation of the sections A+B is simple, and energy consumption is greatly lower than that of prior arts.
Description
Technical field
The present invention relates to technical field of sewage, particularly relate to a kind of method processing sewage by sequence.
Background technology
Although modern sewage treatment plant adopts various different processing methods, substantially method can be summarized as follows：
- mechanical pretreatment, such as filters and removes sand；
- presettling (or primary precipitation), such as removes suspended particulate substance by precipitation；
- biochemical treatment, including several steps：As aerobic, anaerobism and anoxic treatment；
- final clarification (or secondary precipitation)
For example, municipal wastewater processes and generally first passes through mechanical pretreatment (grid filtration and desilting), enters preliminary sedimentation tank afterwards
(presettling), the sewage being partially removed suspended particulate substance proceeds immediately to active sludge treatment unit, and reason unit leads in this place
Cross aerobic, anaerobism and the control of anoxia condition removes carbon compound (as weighed with COD) and nitrogen-containing compound (as weighed with TN
Amount)；For reaching this purpose, the mixture in biochemical reaction tank will be circulated between different disposal step by part；Processed
The water containing mud after will be introduced into final clarification unit, the mud that partly precipitated gets off here is back to biochemistry again
Processing unit, excess sludge carries out further Treatment of Sludge, processes clean water and is discharged.
Modern sewage treatment plant enters according to above-mentioned steps generally according to the rule of DWA (German water, sewage and waste association)
Row runs, and this mode is the superior method generally acknowledged in the world.But, according to these regular suspended particulate substances in the presettling stage
Excessively removed, will lead to lack carbon source in the follow-up biochemical treatment stage.Therefore, general recommendation is being carried out at municipal wastewater
During reason, only about 2/3rds suspended particulate substance was removed in the presettling stage.In order in the feelings reducing biochemical pool volume
The water outlet data obtaining under condition, DWA rule it is further suggested, that for large-scale sewage treatment plant, the biochemical treatment stage
Age of Activated Sludge most preferably should control between 20～30 days.
European Union patent EP 0125546A1 discloses the technique being called AB；What this technique was optimum is two steps
Processing procedure.The first step of this technique is to use activated sludge, and this activated sludge contains abundant prokaryote；This activated sludge
In the middle of one, settling section is separated from the sewage being partly processed, and is partly back to use first step processing links or part
It is transported to Treatment of Sludge.By such mode, the sewage being partly processed generally is located further in subsequent step
Reason.After this inventor, this patent technique is modified, because have passed through the first step processing, in follow-up process step
Enough carbon compounds are not had to participate in the removal of total nitrogen in rapid.
Due to lacking suitable sewage treatment process, the draining of Modern sewage treatment plant still contains higher residual concentration
Pollutant, this makes environment produce increasingly serious problem.The pollutant fully not removed include so-called difficult degradation compound, such as
Medicine, hormone and long-chain Organic substance or other Organic substance.Some European countries still legally allow the water temperature when sewage treatment plant
The waste water being discharged in environment during less than 10 DEG C contains high concentration N compound.This is extremely disadvantageous for environmental conservation.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of method processing sewage by sequence.
A kind of method processing sewage by sequence, including A section processing unit and B section processing unit, the dirt through mechanical pretreatment
Water first enters B section processing unit after A section processing unit processes and continues with, and wherein, the concrete grammar of A section processing unit is such as
Under：
(1) sewage through mechanical pretreatment enters in A section mixing pit and carries out biochemical treatment；
(2), when carrying out biochemical treatment in A section mixing pit, carry out subregion aeration；
(3) in step (2), sewage enters A section settling section, and A section settling section fills filler；
(4) produced excess sludge in step (3) is taken away, the Treatment of Sludge after entrance, the water outlet of A section settling section
Enter B section processing unit；
The concrete grammar of B section processing unit is as follows：
(5) water outlet of A section processing unit step (4) enters in the B section mixing pit of B section processing unit；
(6) subregion aeration or Zone Full aeration are carried out in B section mixing pit；
(7) in step (6), sewage enters B section settling section, and B section settling section fills filler；
(8) processing unit that the water outlet of step (7) enters discharge pipe line or enters next step.
Wherein, the water outlet of B section processing unit step (8) enters C section processing unit or the water outlet of step (8) carries out C successively
Section processing unit and D section processing unit.
Wherein, the capacity of described A section mixing pit is more than 3～6 times of sewage load per hour；Described A section mixing pit and B
It is respectively provided with dissolved oxygen control system in section mixing pit, make oxyty in A section mixing pit and B section mixing pit be not higher than 1.0mg/L.
Wherein, it is respectively provided with dissolved oxygen control system in described A section mixing pit and B section mixing pit, make A section mixing pit and B section
In mixing pit, oxyty is not higher than 0.3mg/L.
Wherein, described A section processing unit is removed to carbon compound, COD in the water outlet of A section processing unit step (4)
It is more than 4kgCOD with the ratio of nitrogen compound TN：1kgTN.
Wherein, the removal of phosphorus compound can be strengthened in described A section processing unit, that is, in sewage or the step (2) of step (1)
Mixed liquor in add Calx, dolomite hydras, iron salt, aluminium salt are made a return journey except phosphorus compound.
Wherein, add there is the change of flocculation in the water outlet of B section processing unit with the mixed liquor of C section processing unit
Compound, activated carbon, blast-furnace coke.
Wherein, the described compound with flocculation is to add Calx, dolomite hydras, iron salt or aluminium salt.
Wherein, the water outlet of C section processing unit is filtered by activated carbon, or by blast-furnace coke or passes through porous aggregate mistake
Filter.
Wherein, the water outlet of D section processing unit is filtered by activated carbon and/or is processed with OH- combined with radical.
The having the beneficial effect that of the technique scheme of the present invention：
The method has the sewage treatment step of simplification it is ensured that the safe operation of sewage treatment plant and control simultaneously.Meanwhile,
The method can reduce the energy expenditure of sewage treatment plant.The method can eliminate as much as difficult degradation compound and in the winter time
The removal of nitrogen-containing compound.
Specific embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with being embodied as
Example is described in detail.
The present invention provides a kind of method processing sewage by sequence.The method includes A section processing unit and B section processing unit,
Sewage through mechanical pretreatment first enters B section processing unit after A section processing unit processes and continues with, and wherein, A section processes single
The concrete grammar of unit is as follows：
(1) sewage through mechanical pretreatment enters in A section mixing pit and carries out biochemical treatment；
(2), when carrying out biochemical treatment in A section mixing pit, carry out subregion aeration；
(3) in step (2), sewage enters A section settling section, and A section settling section is filled with filler using gasket packing；
(4) produced excess sludge in step (3) is taken away, the Treatment of Sludge after entrance, the water outlet of A section settling section
Enter B section processing unit；
The concrete grammar of B section processing unit is as follows：
(5) water outlet of A section processing unit step (4) enters in the B section mixing pit that B section is processed；
(6) subregion aeration or Zone Full aeration are carried out in B section mixing pit；
(7) in step (6), sewage enters B section settling section, and the configuration gasket packing of B section settling section is filled with filler；
(8) processing unit that the water outlet of step (7) enters discharge pipe line or enters next step.
Wherein, A section processing unit is the development further on the basis of old AB technology stated in the background.Relatively
In old AB technology, the substantial improvements of the present invention are, the multiple recirculation of sewage of how many biochemistry pools according to inflow.Institute
The circulation rate taken determines according to contained pollutant levels in water inlet.When processing municipal wastewater, circulation rate can be high
In inflow 5 times～30 times.A section processing unit in the present invention, biochemical treatment (i.e. A section mixing pit) and A section settling section
Combine closely, A section settling section can configure plate-like fillers or other class filler.Preferably, in A section settling section using China specially
The method that the mud that profit application 201610486954.7 is proposed separates/is enriched with.At the A section processing unit of the present invention, biochemistry
Reason adopts part aeration simultaneously.Preferably, all regions dissolved oxygen amount in A section mixing pit is less than 0.3mg/L.At A section
The sewage of reason unit circulation carries out part aeration and can reach by the following method：It is alternately arranged aeration zone in A section mixing pit
With non-aeration area or adopt intermittent aerating.The capacity of the A section mixing pit in the present invention is most preferably set greater than sewage per hour
3～6 times for the treatment of capacity.
In the present invention, different with a few houres of DWA suggestion, the sewage mixture that A section processing unit circulates exists
The zones of different of A section processing unit is flowed through within a few minutes.Therefore, the A section processing unit in the present invention has very to phosphorus compound
High biological removal rate.This phenomenon is referred to as Biological Phosphorus Removal Process (or enhanced biological phosphorus removal, EBPR).According to actual needs, exist
Calx, white clouds stony edema, iron salt or aluminium salt can be added as supplement, thus improving phosphorus further in above-mentioned A section processing unit
Clearance.
With respect to traditional presettling step, the A section processing unit purpose in the present invention is to obtain clean water outlet, makes
As far as possible few SS float and phosphorus is contained in water outlet.In A section processing unit water outlet (as the water inlet of next step B section), COD's is surplus
Remaining concentration is controlled by the concentration adjusting oxygen supply and activated sludge.In this case, A section needs to discharge substantial amounts of remaining
Remaining mud, the specific sludge loading of generation passes through to adjust the concentration needed for the COD determining in A section water outlet reaches with reference to oxygen supply.
Oxygen supply is higher, and the COD concentration in A section water outlet is less；Sludge concentration is higher, and the oxygen required for COD removes is fewer.Need explanation
It is that the COD partly removing under the specified conditions of A section processing unit is not real being degraded, and by activated sludge institute
Absorption.Therefore, the chemical relationship very little between oxygen consumption and COD removal.Therefore, the first step A section in the present invention processes list
Unit is capable of in the case of reducing aeration energy consumption removing of a relatively high amount of pollutant in raw water.
B section processing unit and then A section processing unit in the present invention.B section processing unit is using the work with high sludge age
Skill, such as one typical case apply be since 2003 in Chinese publication known to " BioDopp " or
" Engelbart-BioDopp " or " biological multiplication (Bio-dopp) ".The mixing pit mixture of this technique is with a high speed
In circulation, in conjunction with the aeration of the small uniform bubble of large area, and a final clarification unit or sludge retention unit are (i.e.
B section settling section), this unit can configure plate-like fillers or other class filler, arranges special oxyty control in B section mixing pit
System.Oxyty the recirculating zone before settling zone is detected it is preferred that oxyty need to control 0.02～
0.3mg/L.From the point of view of actual result according to a lot of sewage treatment plants, for reach nitrate compound total removal amount (with total nitrogen Lai
Measurement) carbon-nitrogen ratio (COD/TN) required by BioDopp technique is relatively small, far below 6 proposed by DWA：1.In the present invention,
B section processing unit runs in the case that the COD/TN of water inlet is more than 4/1, and the TN concentration in its water outlet will be far smaller than in Europe
Discharge standard required by the government of continent.It will be apparent that less amount of demand decreases B section processing unit because required for oxygen supply to COD
Energy resource consumption.
In the present invention, the maximum advantage of B section processing unit is that the speed of production of activated sludge is controlled very low, and this is
Because lacking float in the water inlet of B section processing unit, sludge loading can be very low, the phosphorus in B section processing unit water inlet simultaneously
Content is less.In view of about 20 grams of phosphorus (orthophosphate) of usual 1 kilogram of excess sludge dry (bacteriological quality) growth needs,
Therefore, if the present invention B section processing unit water inlet in the phosphorus containing 0.5mg/L, in theory excess sludge maximum growth speed
Degree can only reach 25 grams of SS/m3Sewage.Produced surplus sludge volume is far below the minimum surplus sludge volume of traditional handicraft.
For other techniques, the B section processing unit of the present invention can allow for reaching half a year even more long mud
Age.With regard to this point, according to theory general now, so high sludge age assume responsibility for very big danger, will be dirty for activity hungry to death
Some important antibacterials in mud, therefore so high sludge age must be avoided by.
We are found by long-term research, contrary with existing theory, if sewage treatment plant is carried out according to the present invention
Run, the sludge age significantly mentioned in the biological treatment process of B section processing unit makes the treatment effect of sewage treatment plant
Significantly improve.Specific as follows：
The removal efficiency of the compound of difficult degradation improves with the growth of sludge age.It means that process single in B section
In first activated sludge, the quality of antibacterial and composition continue to develop towards required direction, and sewage treatment plant's run time is longer,
Effect is better.
Sludge age is longer, and the volume of specific mud is less, and the concentration of activated sludge also can be higher.Therefore, when raising is lived
Property mud concentration, specific sludge loading with sludge age reduce, this lead to COD remove reinforcement；
Additionally, sludge age is higher means that in activated sludge, bacteria growth is less, therefore surplus sludge volume reduces.
Therefore, sludge quantity decline is more, and sewage treatment plant's service time under the conditions of the present invention is longer；This leads to produce more stable
Mud, the experiment proved that, this stable mud in Treatment of Sludge afterwards advantageously.
If most of all, B section processing unit persistently runs without interruption, concentration in water outlet for the difficult degradation compound
Will be more and more lower because according to the antibacterial of the slow growth of experiment display can these compounds of metabolism, slowly bred.
According to current statutory regulation, in European sewage treatment plant when water temperature does not need to remove total nitrogen completely less than 10 DEG C.
But, in an experiment it was demonstrated that at such a temperature removing completely of TN be possible to；Additionally, thermally sensitive nitrobacteria
When even close to 0 degree, all also there is certain speed of growth and metabolism.Additionally, in the B section processing unit of the present invention
When water temperature is relatively low, the minimizing speed of nitrobacteria is very little because only very small amount of excess sludge (even without) necessary
It is discharged.Therefore, when being run according to the present invention, there is enough nitre in the activated sludge of B section processing unit always
Change antibacterial.
The volume needed for B section processing unit in the present invention is not above the volume of conventional biochemical processing pond.For one
Municipal wastewater calculates, and the volume of mixing pit is higher than 12 times of inflow per hour, and activated sludge concentration is more than 10g/L (MLSS),
The sludge age then producing will be greater than 200 days.Because produced sludge volume is very little, when using as Chinese patent
During the clarification unit that 201610486954.7 state, the activated sludge concentration of B section processing unit can be higher than even 10g/L.
In the present invention, A section mixing pit and total minimum volume needed for B section mixing pit are less than traditional handicraft.Additionally, it is bigger
Chi Rong makes the operation of sewage treatment plant safer.But, this also indicates that general sewage treatment plant is easy to according to this
Bright transformed.
In the present invention, A section processing unit and B section processing unit have been able to provide cleaner the going out than traditional handicraft
Water, allows the simple linking of subsequent processing units, i.e. so-called 4th phase process simultaneously.
In the present invention, the water outlet of B section processing unit is clarified completely is not compulsive requirement.B section settling section, in particular by
Method described in Chinese patent 201610486954.7, can be used as a mud fixing device.B section can be produced with this understanding
The maximum mixed genetic-neural network (MLSS) of processing unit, the water outlet of B section processing unit contains B section processing unit and is produced
Excess sludge and the rest COD that cannot remove.Because the concentration of the suspended solid (SS) under the conditions of being somebody's turn to do is very little, this water outlet can
With the chemicals of the support flocculation by mixing relatively small amount by process easy, economic further.For this proposed change
Product have Calx and/or dolomite hydrate, and this two classes material can form Calcium Carbonate, and Calcium Carbonate can during flocculation produces
To adsorb substantial amounts of long-chain carbon compound, produced flco can be in follow-up final clarification unit (i.e. C section in the present invention
Processing unit) easily precipitate.COD can extremely economical be reduced by these means.One kind improves B section further and processes
The householder methods of unit effluent characteristics are to add (before C section processing unit finally clarifies unit) in the water outlet of B section processing unit
Enter activated carbon, or add blast-furnace coke, but the latter is more economical.Two methods can be realized at a relatively high COD together and go
Except rate.Another kind of possible method improving final outflow water water quality is to add iron salt or aluminium salt in the water outlet of B section processing unit.
This will be helpful to form the extraordinary flco of settleability, and the concentration of phosphorus is reduced to<0.05mg/L, such treatment effect will
Ensure the water outlet environmental sound of C section processing unit, lake can be directly discharged into, because the phosphorus of low concentration like this is not result in
The outburst of algae.
After the C section processing unit of the present invention, the water body having been purified further can be in next step D section processing unit
Processed, filtered by activated carbon and/or with OH- combined with radical, the amounts of residual contamination in water body process almost without
The degree that method detects.
It should be pointed out that with respect to the adsorption biodegradation described by European Union's patent 0125546A1, B section process in the present invention
Unit, C section processing unit and excess sludge produced by D section processing unit can be back to A section processing unit, whole flow process
Excess sludge be from A section processing unit extract be sent to after sludge treatment.This for conventional method, at sewage
The maintenance work of reason factory is one and greatly simplifies.
Sum it up, the sequential combination of the inventive method ----A+B or A+B+C or A+B+C+D---- with existing
Leading theoretical not quite identical, but its to bring the improvement for the treatment of effect be huge.Sewage treatment process of the present invention is simple, and energy
Meet various demands.
When using the A+B phase method in the present invention, the energy ratio traditional handicraft being consumed reduces in a large number, treatment effeciency simultaneously
Greatly improve.
If supplementing after A+B section and adding Calx or dolomite hydrate, may also combine interpolation iron salt or aluminium salt,
And/or supplementing interpolation activated carbon or blast-furnace coke before C section, the COD in final outflow water and phosphorus can greatly be reduced, thus
Water outlet can be back to multiple use.
If adopting D section processing unit after C section processing unit, filter (preferably blast-furnace coke including activated carbon
Charcoal), or the filtration by other porous fill materials, and by the process of OH- free radical, its final outflow water even can supply
To the production of drinking water, because all of noxious pollutant all will be removed to the degree that cannot detect.
The above is the preferred embodiment of the present invention it is noted that for those skilled in the art
For, on the premise of without departing from principle of the present invention, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of by sequence process sewage method it is characterised in that：Including A section processing unit and B section processing unit, pre- through machinery
The sewage processing first enters B section processing unit after A section processing unit processes and continues with, wherein, A section processing unit concrete
Method is as follows：
(1) sewage through mechanical pretreatment enters in A section mixing pit and carries out biochemical treatment；
(2), when carrying out biochemical treatment in A section mixing pit, carry out subregion aeration；
(3) in step (2), sewage enters A section settling section, and A section settling section fills filler；
(4) produced excess sludge in step (3) is taken away, the Treatment of Sludge after entrance, the water outlet of A section settling section enters
B section processing unit；
The concrete grammar of B section processing unit is as follows：
(5) water outlet of A section processing unit step (4) enters in the B section mixing pit of B section processing unit；
(6) subregion aeration or Zone Full aeration are carried out in B section mixing pit；
(7) in step (6), sewage enters B section settling section, and B section settling section fills filler；
(8) processing unit that the water outlet of step (7) enters discharge pipe line or enters next step.
2. according to claim 1 by sequence process sewage method it is characterised in that：The going out of B section processing unit step (8)
Water enters C section processing unit or the water outlet of step (8) carries out C section processing unit and D section processing unit successively.
3. according to claim 1 by sequence process sewage method it is characterised in that：The capacity of described A section mixing pit is big
In sewage load per hour 3～6 times；It is respectively provided with dissolved oxygen control system in described A section mixing pit and B section mixing pit, make A
In section mixing pit and B section mixing pit, oxyty is not higher than 1.0mg/L.
4. according to claim 1 by sequence process sewage method it is characterised in that：Described A section mixing pit and the mixing of B section
It is respectively provided with dissolved oxygen control system in pond, make oxyty in A section mixing pit and B section mixing pit be not higher than 0.3mg/L.
5. according to claim 1 by sequence process sewage method it is characterised in that：Described A section processing unit is to carbonization
Compound is removed, and in the water outlet of A section processing unit step (4), the ratio of COD and nitrogen compound TN is more than 4kgCOD：1kgTN.
6. according to claim 1 by sequence process sewage method it is characterised in that：Can add in described A section processing unit
The removal of strong phosphorus compound, adds Calx, dolomite hydras, ferrum in the sewage of step (1) or the mixed liquor of step (2)
Salt, aluminium salt are made a return journey except phosphorus compound.
7. according to claim 1 and 2 by sequence process sewage method it is characterised in that：Water outlet in B section processing unit
With adding in the mixed liquor of C section processing unit, there is the compound of flocculation, activated carbon, blast-furnace coke.
8. according to claim 7 by sequence process sewage method it is characterised in that：The described chemical combination with flocculation
Thing is to add Calx, dolomite hydras, iron salt or aluminium salt.
9. according to claim 1 and 2 by sequence process sewage method it is characterised in that：The water outlet of C section processing unit is led to
Cross activated carbon to filter, or filter by blast-furnace coke or by porous aggregate.
10. according to claim 1 and 2 by sequence process sewage method it is characterised in that：The water outlet of D section processing unit
Filtered by activated carbon and/or process with OH- combined with radical.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109293046A (en) * | 2018-10-12 | 2019-02-01 | 南京易洁环保科技有限公司 | A kind of purifying domestic sewage method |
| CN109607726A (en) * | 2018-11-29 | 2019-04-12 | 浙江正洁环境科技有限公司 | A method of degradation phosphonium flame retardant waste water |
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| CN1087609A (en) * | 1992-11-09 | 1994-06-08 | Cowi拉吉文德工程咨询公司 | Purification system and the slice separates device that is used for solids precipitation |
| CN2570253Y (en) * | 2002-06-03 | 2003-09-03 | 黄永坚 | Multi-process integrated waste water treatment facilities |
| CN104355493A (en) * | 2014-11-06 | 2015-02-18 | 广西绿晨环境工程有限公司 | Integrated aerobiotic advanced treatment device |
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| DE1601131A1 (en) * | 1966-11-11 | 1970-07-16 | Heinz Hard Faigle | Cooling grid as a trickle installation, especially for cooling towers |
| CN1087609A (en) * | 1992-11-09 | 1994-06-08 | Cowi拉吉文德工程咨询公司 | Purification system and the slice separates device that is used for solids precipitation |
| CN2570253Y (en) * | 2002-06-03 | 2003-09-03 | 黄永坚 | Multi-process integrated waste water treatment facilities |
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| CN109293046A (en) * | 2018-10-12 | 2019-02-01 | 南京易洁环保科技有限公司 | A kind of purifying domestic sewage method |
| CN109607726A (en) * | 2018-11-29 | 2019-04-12 | 浙江正洁环境科技有限公司 | A method of degradation phosphonium flame retardant waste water |
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| CN106430549B (en) | 2020-07-10 |
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