CN109574216A - The control system of the coupling integrated Anammox SBBR advanced nitrogen of segmental influent - Google Patents
The control system of the coupling integrated Anammox SBBR advanced nitrogen of segmental influent Download PDFInfo
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- CN109574216A CN109574216A CN201811576282.4A CN201811576282A CN109574216A CN 109574216 A CN109574216 A CN 109574216A CN 201811576282 A CN201811576282 A CN 201811576282A CN 109574216 A CN109574216 A CN 109574216A
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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
- C02F3/28—Anaerobic digestion processes
- C02F3/282—Anaerobic digestion processes using anaerobic sequencing batch reactors
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
Abstract
The control system of the coupling integrated Anammox SBBR advanced nitrogen of segmental influent belongs to field of biological sewage treatment.The system includes municipal sewage water tank, SBBR reactor, PLC control cabinet, computer.Municipal sewage is pumped into SBBR reactor in two times, and after intaking for the first time, furthermore denitrifying bacterium is stored remaining organic matter to synthesizing internal carbon source in bacterial body using nitrite nitrogen and nitrate nitrogen remaining in the organic matter removal reactor in sewage；Aeration is opened after reaction, carries out integral anaerobic ammoxidation denitrification.It after aeration, carries out second and intakes, the nitrate nitrogen that denitrification removal Anammox reaction generates simultaneously stores internal carbon source, is aerated again after reaction, and the ammonia nitrogen in second of water inlet of removal generates nitrate nitrogen.After the completion of second is aerated, denitrification is carried out using the internal carbon source of storage and further decreases water outlet nitrogen concentration.The advanced nitrogen of low ratio of carbon to ammonium municipal sewage can be achieved in the present invention, easy to operate, energy-saving.
Description
Technical field
The present invention relates to the control systems of the coupling integrated Anammox SBBR advanced nitrogen of segmental influent, belong to sewage
Biologic treating technique field.
Background technique
To avoid water eutrophication, sewage denitrification and dephosphorization has become the conventional treatment project of municipal sewage plant,
The advanced nitrogen of middle low ratio of carbon to ammonium municipal sewage is a bottleneck problem.Traditional biological nitrification and denitrification denitrogenation technology is being handled
When municipal sewage, due to the deficiency of dirty Organic substance in water, often up to less than good denitrification denitrogenation effect, and operation energy consumption compared with
It is high.
Segmental influent technology refers to by repeatedly adding sewage repeatedly, and organic matter therein is made full use of to strengthen the anti-nitre of heterotrophism
Change the operating process of denitrogenation.It is low for municipal sewage carbon-nitrogen ratio, traditional nitration denitrification denitrogenation technique organic matter using insufficient,
The low problem of nitric efficiency, segmental influent can make full use of the organic matter in sewage to carry out denitrification, and it is de- to improve sewage
Nitrogen effect.
Integral anaerobic ammoxidation, i.e., synchronous short distance nitration Anammox, is a kind of new autotrophic denitrification technology, is
Refer in same reaction system, ammonia nitrogen a part in sewage is oxidized to nitrite nitrogen by short distance nitration bacterium, while this part is raw
At nitrite nitrogen and sewage in remaining ammonia nitrogen further through Anammox effect be converted into nitrogen removal process.With tradition
Nitration denitrification denitrogenation technique compare, integral anaerobic ammoxidation does not need organic matter, at the same have saving aeration, sludge produce
Measure low series of advantages.In addition, short distance nitration and Anammox reaction carry out simultaneously in the same system, operation is simplified
Difficulty.In recent years, which has become research hotspot both domestic and external.
SBBR reactor is to add carrier filler on the basis of sbr reactor device (sequencing batch activated sludge reactor) to be formed
Biomembrane and a kind of novel combined biofilm reactor that developed, capital cost easy to operate, flexible except SBR is remained
With it is few the advantages that except, have that microbe species are more, biomass is big, also conducive to the microorganism growth that generation time is long, processing energy
The advantages that power is strong.In addition, the biomembrane formed on carrier filler can create good growing environment for different microorganisms, especially
It is that can effectively withhold anaerobic ammonia oxidizing bacteria, conducive to the progress of integral anaerobic ammoxidation reaction.
The present invention is combined with integral anaerobic ammoxidation technology in the same system, by segmental influent, is playing autotrophy
While denitrification, the organic matter in sewage can be made full use of, intensified anti-nitrated heterotrophism denitrogenation improves denitrification effect.In addition,
By control system real time control variables, optimize operating scheme, it can be achieved that municipal sewage advanced nitrogen.
Summary of the invention
For traditional nitration denitrification denitrogenation technique when handling low ratio of carbon to ammonium municipal sewage, denitrification effect is bad, energy consumption
The problems such as big, the present invention combine step feed technology with the advantage of integral anaerobic ammoxidation technology, make full use of sewage
In organic matter, play the effect of autotrophic denitrification and heterotrophism denitrogenation, it can be achieved that the depth of nitrogen removes, while energy saving.In addition,
By real-time control, the controllability and flexibility of system can be improved, convenient for manipulation and operation.
The control system of the coupling integrated Anammox SBBR advanced nitrogen of segmental influent, it is characterised in that: including city
City's sewage water tank (1), SBBR reactor (2), PLC control cabinet (17), computer (18)；The wherein municipal sewage water tank (1)
It is connected by intake pump (3) with SBBR reactor (2)；The SBBR reactor (2) is equipped with inlet valve (4), filler fixed frame
(5), carrier filler (6), air pump (7), gas flowmeter (8), micro porous aeration head (9), drain valve (10), blow valve (11),
DO detector (12), NH4 +Detector (13), NO2 -Detector (14), NO3 -Detector (15), blender (16)；The carrier is filled out
Expect that (6) are polyurethane material, be in cubic, specific surface area is 20~23m2/ g, filling rate are 20%~25%, are uniformly distributed
In filler fixed frame (5), microorganism can on filler apposition growth；The control cabinet (17) connects intake pump (3), air pump
(7), DO detector (12), NH4 +Detector (13), NO2 -Detector (14), NO3 -Detector (15), blender (16) and calculating
Machine (18)；Computer (16) real-time reception simultaneously exports the collected signal of each detector, in monitoring SBBR reactor (2)
DO concentration, ammonia nitrogen concentration, nitrite nitrogen and nitrate are controlled and are optimized the system operation.
The side of city sewage deep denitrogenation is realized with the control system of the coupling integrated Anammox SBBR of segmental influent
Method mainly comprises the steps that
1) sewage in municipal sewage water tank (1) be divided into twice through intake pump (3) enter SBBR reactor (2), twice into
The volume ratio of water is 1:1~2:1；After first time water inlet end, intake pump (3) is closed, and blender (16) is opened, and is made sewage and is carried
Body filler (6) comes into full contact with, and the denitrifying bacterium of apposition growth utilizes a reaction time on the organic matter removal in sewage on filler
Remaining nitrite nitrogen and nitrate nitrogen, and remaining organic matter is stored as the intracorporal internal carbon source of bacterium, control agitator speed
It for 40-60r/min, avoids revolving speed is too fast to bring air in water into, destroys and lack/anaerobic environment, DO < 0.1mg/L is good to guarantee
Anoxic denitrification and the storage of anaerobism internal carbon source act on, 1~2h of reaction time；
2) above-mentioned blender (16) is closed after reaction, and air pump (7) is opened, and is controlled DO by gas flowmeter (8)
It is made as 0.5~1.0mg/L, good condition is provided for integrated Anammox reaction, at this point, being grown in carrier filler (6)
On short distance nitration bacterium by the ammonia nitrogen in sewage by short distance nitration oxidation be nitrite nitrogen；At the same time, on filler
Remaining ammonia nitrogen in the nitrite nitrogen and sewage of generation is acted on by Anammox and being removed by anaerobic ammonia oxidizing bacteria, and generates nitre
State nitrogen；DO detector (12), NH4 +Detector (13), NO2 -Detector (14) and NO3 -Detector (15) will respective collected letter
Number it is transmitted to PLC control cabinet (17) and computer (18)；
3) it computer (18) real-time reception and converts, export the collected signal of each detector, on-line monitoring SBBR reaction
DO concentration, ammonia nitrogen concentration, nitrite nitrogen concentration and nitrate in device (2) stop when ammonia nitrogen concentration is less than 0.5mg/L
Aeration；
4) after being aerated, air pump (7) is closed, and intake pump (3), which is opened, intake for the second time, after water inlet end, into
Water pump (3) is closed, and blender (16) is opened, and denitrifying bacterium utilizes the organic matter removal integral anaerobic ammoxidation reaction in sewage
The nitrate nitrogen of generation, and remaining organic matter is stored as internal carbon source, control agitator speed are 40-60r/min, DO <
0.1mg/L, 1~2h of reaction time；
5) blender (16) being closed, opens air pump (7) and carries out second of aeration, control DO is 0.5~1.0mg/L, then
Secondary progress integral anaerobic ammoxidation reaction removes the ammonia nitrogen in second of water inlet, while generating nitrate nitrogen；DO detector
(12)、NH4 +Detector (13), NO2 -Detector (14) and NO3 -Collected signal is transmitted to PLC control cabinet by detector (15)
(17) and computer (18)；Computer (18) receives and converts, exports the collected signal of each detector, and real-time monitoring SBBR is anti-
DO concentration, ammonia nitrogen concentration, nitrite nitrogen concentration and the nitrate in device (2) are answered, is stopped when ammonia nitrogen concentration is less than 0.5mg/L
Only it is aerated；
6) after second of aeration, air pump (7) is closed, and blender (16) is opened, and denitrifying bacterium is interior using storage
Carbon source carries out denitrification, reduces water outlet nitrogen concentration；DO detector (12), NH4 +Detector (13), NO2 -Detector (14) and
NO3 -Detector (15) is by collected signal real-time Transmission to PLC control cabinet (17) and computer (18)；
7) computer (18) receives and converts, exports the collected signal of each detector, real-time monitoring SBBR reactor (2)
Interior DO concentration, ammonia nitrogen concentration, nitrite nitrogen concentration and nitrate, control agitator speed be 40-60r/min, DO <
0.1mg/L stops stirring when nitrite nitrogen concentration is less than 0.5mg/L and nitrate is less than 3.0mg/L；
8) it after the completion of above-mentioned stirring, staticly settles 5min and carries out mud-water separation, supernatant is discharged by drain valve (10), row
The water put is equal to the sum of the inflow of reactor twice；The biomembrane to fall off on carrier filler (6) is discharged through blow valve (11).
With the method for the control system Treating Municipal Sewage of the coupling integrated Anammox SBBR of segmental influent with it is existing
Technology is compared and is had the advantage that
1) integral anaerobic ammoxidation is combined with the advantage of segmental influent technology, is playing the same of autotrophic denitrification effect
When, the organic matter in sewage can be made full use of, intensified anti-nitrated heterotrophism denitrogenation can realize advanced nitrogen in triangular web.
2) integral anaerobic ammoxidation reaction is autotrophic denitrification process, does not need to add organic matter, and can save significantly on exposure
Gas energy consumption, sludge yield are few.
3) reaction carries out in the same system, and device is simple, is furthermore optimized by line real time control and is run, and system is automatic
Change degree is high, and controllability is good.
4) microorganism apposition growth on carrier filler forms biomembrane, is enriched with conducive to the growth of microorganism, microbial species
Class is more, biomass is big, anti impulsion load.
5) carrier filler can effectively intercept, particulate matter and impurity in absorption effluent, system water outlet it is limpid.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the coupling integrated Anammox SBBR advanced nitrogen control system of segmental influent.
In Fig. 1: 1- municipal sewage water tank；2-SBBR reactor；3- intake pump；4- inlet valve；5- filler fixed frame；6- is carried
Body filler；7- air pump；8- gas flowmeter；9- micro porous aeration head；10- drain valve；11- blow valve；12-DO detector；13-
NH4 +Detector；14-NO2 -Detector；15-NO3 -Detector；16- blender；17-PLC control cabinet；18- computer.
Specific embodiment
The embodiment that the present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the control system of the coupling integrated Anammox SBBR advanced nitrogen of segmental influent, mainly includes
Municipal sewage water tank (1), SBBR reactor (2), PLC control cabinet (17), computer (18).The wherein municipal sewage water tank
(1) it is connected by intake pump (3) with SBBR reactor (2)；The SBBR reactor (2) is cylinder, and main body is by organic glass
Glass is made, dischargeable capacity 12L, is equipped with inlet valve (4), filler fixed frame (5), carrier filler (6), air pump (7), gas flow
Count (8), micro porous aeration head (9), drain valve (10), blow valve (11), DO detector (12), NH4 +Detector (13), NO2 -Detection
Device (14), NO3 -Detector (15), blender (16)；The carrier filler (6) is polyurethane material, is in cubic, specific surface
Product is 20~23m2/ g, filling rate are 20%~25%, are uniformly distributed on filler fixed frame (5), microorganism can be on filler
Apposition growth；The control cabinet (17) connects intake pump (3), air pump (7), DO detector (12), NH4 +Detector (13),
NO2 -Detector (14), NO3 -Detector (15), blender (16) and computer (18)；Computer (16) real-time reception is simultaneously
Export the collected signal of each detector, DO concentration, ammonia nitrogen concentration, nitrite nitrogen and nitre state in monitoring SBBR reactor (2)
Nitrogen concentration is controlled and is optimized the system operation.
The side of city sewage deep denitrogenation is realized with the control system of the coupling integrated Anammox SBBR of segmental influent
Method mainly comprises the steps that
1) sewage in municipal sewage water tank (1) enters SBBR reactor (2) through intake pump (3) in two times altogether, twice
The volume ratio of water inlet is 1:1~2:1；After first time water inlet end, intake pump (3) close, blender (16) open, make sewage with
The microorganism of apposition growth comes into full contact on carrier filler (6), and wherein denitrifying bacterium is anti-by upper one using the organic matter in sewage
It answers period remaining nitrite nitrogen and nitrate nitrogen denitrification to remove, and remaining organic matter is stored to carbon in synthesis in bacterial body
Source；Control agitator speed is 40-60r/min, avoids revolving speed is too fast to bring air in water into, destroys and lacks/anaerobic environment, control
DO < 0.1mg/L, to guarantee that good anoxic denitrification and the storage of anaerobism internal carbon source act on, 1~2h of reaction time；
2) above-mentioned blender (16) is closed after reaction, and air pump (7) unlatching is aerated, and gas flowmeter is passed through
(8) it is 0.5~1.0mg/L by DO control, good condition is provided for integrated Anammox reaction, at this point, being grown in load
It is nitrite nitrogen that ammonia nitrogen in sewage is passed through short distance nitration oxidation by the short distance nitration bacterium on body filler (6)；At the same time,
Anaerobic ammonia oxidizing bacteria on filler, which acts on remaining ammonia nitrogen in the nitrite nitrogen and sewage of generation by Anammox, to be removed,
And generate nitrate nitrogen；DO detector (12), NH4 +Detector (13), NO2 -Detector (14) and NO3 -Detector (15) will collect
Signal be transmitted to PLC control cabinet (17) and computer (18)；
3) it computer (18) real-time reception and converts, export the collected signal of each detector, on-line monitoring SBBR reaction
DO concentration, ammonia nitrogen concentration, nitrite nitrogen concentration and nitrate in device (2) stop when ammonia nitrogen concentration is less than 0.5mg/L
Aeration；
4) after being aerated, air pump (7) is closed, and intake pump (3) is opened, and is carried out second and is intake, and after water inlet end, is closed
Intake pump (3) and turn on agitator (16) are closed, denitrifying bacterium is anti-using the organic matter removal integral anaerobic ammoxidation in sewage
The nitrate nitrogen that should be generated, and remaining organic matter is stored as internal carbon source, control agitator speed are 40-60r/min, DO <
0.1mg/L, 1~2h of reaction time；
5) above-mentioned blender (16) is closed after reaction, and air pump (7), which is opened, carries out second of aeration, and control DO is
0.5~1.0mg/L, the short distance nitration bacterium on carrier filler (6) cooperates with anaerobic ammonia oxidizing bacteria carries out integral anaerobic ammoxidation
Reaction removes the ammonia nitrogen in second of water inlet, while generating nitrate nitrogen；DO detector (12), NH4 +Detector (13), NO2 -Inspection
Survey device (14) and NO3 -Collected signal is transmitted to PLC control cabinet (17) and computer (18) by detector (15)；Computer
(18) it receives and converts, exports the collected signal of each detector, DO concentration, ammonia nitrogen in real-time monitoring SBBR reactor (2)
Concentration, nitrite nitrogen concentration and nitrate stop aeration when ammonia nitrogen concentration is less than 0.5mg/L；
6) after second of aeration, air pump (7) is closed, and blender (16) is opened, the denitrification on carrier filler (6)
Bacterium carries out denitrification using the internal carbon source of storage；DO detector (12), NH4 +Detector (13), NO2 -Detector (14) and
NO3 -Detector (15) is by collected signal real-time Transmission to PLC control cabinet (17) and computer (18)；
7) computer (18) receives and converts, exports the collected signal of each detector, real-time monitoring SBBR reactor (2)
Interior DO concentration, ammonia nitrogen concentration, nitrite nitrogen concentration and nitrate, control agitator speed be 40-60r/min, DO <
0.1mg/L, when nitrite nitrogen concentration is less than 0.5mg/L and nitrate is less than 3.0mg/L, blender (16) is closed；
8) it after the completion of above-mentioned stirring, staticly settles 5min and carries out mud-water separation, supernatant is discharged by drain valve (10), row
The water put is equal to the sum of the inflow of SBBR reactor (2) twice；The biomembrane to fall off on carrier filler (6) is through blow valve
(11) it is discharged.
It is process object with laboratory periphery residential quarters sanitary sewage, investigates the denitrogenation of the SBBR control system
Energy.
Influent quality is as follows during experiment:
Operating parameter during experiment:
SBBR reactor (dischargeable capacity 12L)
First lacks/anaerobism section: into sanitary sewage 3L, controlling agitator speed 40-60r/min, DO < 0.1mg/L, when reaction
Between 1~2h；
First aerobic section: control DO is 0.5~1.0mg/L, adjust automatically aeration time, generally 2~3h；
Second lacks/anaerobism section: into sanitary sewage 3L, controlling agitator speed 40-60r/min, DO < 0.1mg/L, when reaction
Between 1~2h；
Second aerobic section: control DO is 0.5~1.0mg/L, adjust automatically aeration time, generally 2~3h；
Postposition anoxic section: control agitator speed 40-60r/min, DO < 0.1mg/L, the adjust automatically reaction time, generally
For 1~2h；
The quiet heavy stage: 6L is drained after staticly settling 5min.
Under the service condition, reactor is averagely discharged COD, NH4 +-N、NO2 --N、NO3 -- N, TN be respectively 30.6,0.4,
0.2,2.9,3.5mg/L, have achieved the effect that advanced nitrogen.
It is specific embodiments of the present invention above, is better understood on and applies this convenient for the those skilled in the art
Invention, implementation of the invention is without being limited thereto, therefore the simple modifications that the those skilled in the art are the present invention all exist
Within the scope of the present invention.
The system combines segmental influent with the advantage of integral anaerobic ammoxidation technology, can make full use of in sewage
Organic matter plays the effect of autotrophic denitrification and heterotrophism denitrogenation；In addition, optimizing the system operation by real-time control, system can be improved
Controllability and flexibility, convenient for manipulation and operation, can be realized in triangular web nitrogen depth removal, it is energy-saving, answer
It is very wide with prospect.
Claims (2)
1. the control system of the coupling integrated Anammox SBBR advanced nitrogen of segmental influent, it is characterised in that:
Including municipal sewage water tank (1), SBBR reactor (2), PLC control cabinet (17), computer (18)；Wherein the city is dirty
Water tank (1) is connected by intake pump (3) with SBBR reactor (2)；The SBBR reactor (2) is equipped with inlet valve (4), fills out
Expect fixed frame (5), carrier filler (6), air pump (7), gas flowmeter (8), micro porous aeration head (9), drain valve (10), emptying
Valve (11), DO detector (12), NH4 +Detector (13), NO2 -Detector (14), NO3 -Detector (15), blender (16)；Institute
Stating carrier filler (6) is polyurethane material, and specific surface area is 20~23m2/ g, filling rate are 20%~25%, are uniformly distributed in
On filler fixed frame (5)；The control cabinet (17) connects intake pump (3), air pump (7), DO detector (12), NH4 +Detector
(13)、NO2 -Detector (14), NO3 -Detector (15), blender (16) and computer (18).
2. the method for the application coupling integrated Anammox SBBR advanced nitrogen of segmental influent described in claim 1, special
Sign is:
1) sewage in municipal sewage water tank (1) enters SBBR reactor (2) by intake pump (3) in two times, the body intake twice
Product is than being 1:1~2:1；After first time water inlet end, intake pump (3) is closed, and blender (16) is opened, on carrier filler (6)
Denitrifying bacterium has using a reaction time remaining nitrite nitrogen and nitrate nitrogen on the organic matter removal in sewage by remaining
Machine object is stored as the intracorporal internal carbon source of bacterium, controls DO < 0.1mg/L, 1~2h of reaction time；
2) above-mentioned blender (16) is closed after reaction, and air pump (7) is opened, and is by DO control by gas flowmeter (8)
0.5~1.0mg/L carries out integral anaerobic ammoxidation reaction, removes the ammonia nitrogen in sewage, while generating nitrate nitrogen；DO detection
Device (12), NH4 +Detector (13), NO2 -Detector (14) and NO3 -Collected signal is transmitted to PLC control by detector (15)
Cabinet (17) and computer (18), computer (18) real-time reception simultaneously converts, exports the collected signal of each detector, according to monitoring
Data-optimized adjustment system running state stops aeration when ammonia nitrogen concentration is less than 0.5mg/L；
3) after being aerated, air pump (7) is closed, and intake pump (3), which is opened, intake for the second time, after water inlet end, intake pump
(3) it closes, blender (16) is opened, and denitrifying bacterium is generated using the organic matter removal integral anaerobic ammoxidation reaction in sewage
Nitrate nitrogen, and remaining organic matter is stored as internal carbon source, controls DO < 0.1mg/L, 1~2h of reaction time；
4) above-mentioned blender (16) is closed after reaction, and air pump (7), which is opened, to be carried out second and be aerated, and control DO is 0.5~
1.0mg/L carries out integral anaerobic ammoxidation reaction, the ammonia nitrogen in second of water inlet of removal, while generating nitrate nitrogen；Each detection
Collected signal is transmitted to PLC control cabinet (17) and computer (18) by device, carries out data real-time monitoring and system in line traffic control
System stops aeration when ammonia nitrogen concentration is less than 0.5mg/L；
5) after second of aeration, air pump (7) is closed, and blender (16) is opened, and denitrifying bacterium utilizes the internal carbon source of storage
It carries out denitrification and further decreases water outlet nitrogen concentration；DO detector (12), NH4 +Detector (13), NO2 -Detector (14) and NO3 -
Detector (15) receives collected signal real-time Transmission to PLC control cabinet (17) and computer (18), computer (18) simultaneously
It converts, export the collected signal of each detector, control DO < 0.1mg/L, when nitrite nitrogen concentration is less than 0.5mg/L and nitre state
Nitrogen concentration stops stirring when being less than 3.0mg/L；
6) it after the completion of stirring, staticly settles 5min and carries out mud-water separation, supernatant is discharged by drain valve (10)；Carrier filler
(6) biomembrane to fall off on is discharged through blow valve (11).
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| CN113666496A (en) * | 2021-07-25 | 2021-11-19 | 北京工业大学 | Method and device for realizing deep nitrogen and phosphorus removal of low-carbon-nitrogen-ratio domestic sewage by using segmented water inlet double-short-range anaerobic ammonia oxidation process |
| CN114212884A (en) * | 2021-11-29 | 2022-03-22 | 北京工业大学 | Device and method for realizing deep denitrification of domestic sewage by two-section water inlet A/O/A through double-short-range coupling anaerobic ammonia oxidation SFBBR |
| CN114212884B (en) * | 2021-11-29 | 2024-03-29 | 北京工业大学 | Device and method for realizing double short-range coupling anaerobic ammonia oxidation SFBBR deep denitrification of domestic sewage by two-stage water inflow A/O/A |
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