CN106115920A - Fermented sludge is utilized to realize municipal sewage part short distance nitration and the method and apparatus of Anammox - Google Patents
Fermented sludge is utilized to realize municipal sewage part short distance nitration and the method and apparatus of Anammox Download PDFInfo
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- CN106115920A CN106115920A CN201610799348.0A CN201610799348A CN106115920A CN 106115920 A CN106115920 A CN 106115920A CN 201610799348 A CN201610799348 A CN 201610799348A CN 106115920 A CN106115920 A CN 106115920A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
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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
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
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Abstract
Utilize fermented sludge to realize municipal sewage part short distance nitration and the method and apparatus of Anammox, belong to municipal sewage treatment and mud biochemical treatment field.Carrying out Organic substance and the removal of phosphorus and part short-cut nitrification and denitrification effect in reactor the oneth SBR, period is controlled in real time by DO and pH, and is realized the removal of phosphorus by spoil disposal.Reactor the oneth SBR water outlet enters reactor the 2nd SBR and carries out Anammox reaction, thus reaches the purpose of advanced nitrogen dephosphorization.The present invention is by by excess sludge and sanitary sewage mixed processing, it is possible to solve the problem that sanitary sewage can not stably realize short distance nitration because ammonia nitrogen concentration is low, it is also possible to save carbon source, improves denitrogenation dephosphorizing efficiency, realizes sludge reduction simultaneously and processes.
Description
Technical field
The present invention relates to utilize fermented sludge realize municipal sewage part short distance nitration and Anammox method and
The optimal control of device, belongs to municipal sewage treatment and mud biochemical treatment field.This technique is applicable to low C/N, C/P city
The strengthening advanced nitrogen dephosphorization of sanitary sewage.
Background technology
In biological denitrification process, denitrifying bacterium needs Organic substance as electron donor reduction-oxidation state as heterotrophic bacteria
Nitrogen；In Biological Phosphorus Removal Process, polyP bacteria absorbs short-chain fatty acid VFA synthesis PHA in anaerobism section and is stored in intracellular, aerobic
Section decomposed P HA is as energy needed for excess suction phosphorus.So organic carbon source is extremely important for biological carbon and phosphorous removal.But,
Generally there is the problem of carbon source wretched insufficiency in China's major part municipal sewage, himself carbon source cannot meet wanting of denitrogenation dephosphorizing
Ask so that water outlet is difficult to up to standard.By adding methanol, although the outer carbon source such as sodium acetate can reach good outlet effect, but
It is that cost is the highest, but also excess sludge production can be increased.Inside sewage, the Organic substance of nearly 1/3 changes into mud, residue dirt
It is also a great problem that the process of mud is disposed, so for solving carbon source deficiency and the highest the asking of excess sludge processing cost in sewage
Topic, can carry out enhanced sewage treatment plant biological carbon and phosphorous removal by exploitation excess sludge internal carbon source.Excess sludge anaerobic fermentation energy
Produce a large amount of short-chain fatty acid and can improve sewage denitrification and dephosphorization effect as the high-quality carbon source during biological carbon and phosphorous removal
Really, the minimizing simultaneously realizing mud processes.Fermentation liquid can be separated Selection utilization with mud by exploitation excess sludge internal carbon source
Fermentation liquid, it is also possible to directly utilize its sludge fermentation mixture.In view of problems such as operating costs, only utilize sludge fermentation supernatant
Liquid cost is the highest, can be with Selection utilization excess sludge fermenting mixture.
Fermented sludge is utilized to realize municipal sewage part short distance nitration and the method and apparatus of Anammox, to remain dirt
Mud and municipal sewage are object of study, and the anaerobic phosphorus release, aerobic phosphorus absorption and the part that first pass through sequencing batch reactor the oneth SBR are short
Journey nitrification, denitrification dephosphorization effect carry out Organic substance and the removal of nitrogen phosphorus, and the water outlet of sequencing batch reactor the oneth SBR is again through sequence
The Anammox of batch reactor the 2nd SBR processes and realizes advanced nitrogen, improves the denitrification percent of system.Utilize Sewage Plant certainly
The mud of body discharge, as carbon source, saves the expense of additional carbon while improving denitrogenation dephosphorizing efficiency；Mud is utilized to send out
Ferment mixture eliminates the process of mud and separation of fermentative broth, cost-effective, is simultaneously achieved sludge reduction and processes.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes one and utilizes fermented sludge to realize municipal sewage part short distance nitration
With the method and apparatus of Anammox, excess sludge mixture is pumped into that to process the batch-type of low C/N, C/P sanitary sewage anti-
Answering in device the oneth SBR, polyP bacteria utilizes the abundant carbon source in sludge fermentation mixture and sanitary sewage to release phosphorus in a large number, and stores up
Depositing a large amount of PHA, following aeration carries out part short distance nitration and the reaction of polyP bacteria suction phosphorus, removes part ammonia nitrogen and is converted
For nitrite nitrogen and nitrate nitrogen, enter back into anoxia stirring in short-term, carry out denitrifying phosphorus uptake, by nitrate nitrogen and the most residual
Remaining phosphorus ligands；The 2nd SBR that oneth SBR water outlet pumps into inoculation anaerobic ammonium oxidation sludge again carries out Anammox reaction,
Remove ammonia nitrogen and nitrite nitrogen, thus reach the purpose of advanced nitrogen dephosphorization.
The present invention is achieved through the following technical solutions:
(1) startup of excess sludge fermentation tank: excess sludge fermentation tank (2) is semi batch reacor, sludge retention time
SRT, at 6～20 days, controls pH 9～10；Excess sludge fermenting mixture is discharged to fermenting mixture storage every day according to SRT
Tank (9) also adds the fresh excess sludge of equal-volume to excess sludge fermentation tank (2)；
(2) startup of sequencing batch reactor the oneth SBR: inject batch-type reaction as seed sludge using short distance nitration mud
Device the oneth SBR (13), is simultaneously that former water injects sanitary sewage water tank (8) to add the city domestic sewage of sodium acetate, makes into water
C/N ratio maintains 5～6, squeezes into sequencing batch reactor the oneth SBR (13) by the i.e. intake pump of the 3rd peristaltic pump (10), and every day transports
Row 2～3 cycles, draining ratio maintains 50～80%, and each cycle includes that, into water, anaerobism stirs, aeration, and anoxia stirring is heavy
Form sediment, draining, idle, run reactor under these conditions, when aerobic end nitrite accumulation rate is more than 95%, and water outlet TP exists
During below 1mg/L, complete the Start-up and Adjustment of sequencing batch reactor the oneth SBR (13)；
(3) startup of sequencing batch reactor the 2nd SBR: using anaerobic ammonium oxidation granular sludge or floc sludge as inoculation
Mud injects sequencing batch reactor the 2nd SBR (20), meanwhile, with NH4 +-N and NO2 —The mass concentration ratio of N is 1:1's～1.3
Water distribution injects intermediate water tank (17) for water inlet, squeezes into sequencing batch reactor the 2nd SBR (20) by peristaltic pump, water inlet anaerobism simultaneously
Stirring, as water outlet NH4 +-N concentration < 1mg/L, or NO2 --N concentration < during 1mg/L, completes the startup of sequencing batch reactor the 2nd SBR
Debugging；
(4) after sequencing batch reactor the oneth SBR and the 2nd SBR is respectively completed startup, by both series operations: batch-type is anti-
Device the oneth SBR (13) each cycle is answered to experience water inlet and sludge fermentation mixture, anaerobism stirring, aeration, anoxia stirring, precipitation successively
5 processes of draining；Sequencing batch reactor the 2nd SBR (20) each cycle experiences water inlet (water outlet of the i.e. the oneth SBR) successively, anoxia is stirred
Mix, 3 processes of sedimentation and drawing.
Sequencing batch reactor the oneth SBR:
I water inlet, fermenting mixture set inflow as the 1/2～4/5 of reactor effective volume, and entering fermenting mixture amount is
The 1/50～1/10 of water inlet volume, both of which is controlled by time switch, and after system start-up, the sewage in sewage water tank (8) leads to
Cross intake pump (10) and enter sequencing batch reactor the oneth SBR (13), the fermentation during water inlet, in excess sludge fermentation tank (2)
Mixture enters a SBR (13) by the second peristaltic pump (11)；In fermenting mixture, the index of material is as follows: SCOD is 3380
± 420mg/L, SCFAs are 1221 ± 40mg COD/L, NH4 +-N is 198 ± 20mg/L, PO4 3--P is 95 ± 10mg/L；
Enter anaerobism agitation phases after the stirring water inlet of II anaerobism, sets mixing time as 3～3.5h, polyP bacteria utilization
Abundant carbon source in fermenting mixture and sanitary sewage releases phosphorus in a large number, and stores a large amount of PHA；；
III aeration opens air compressor machine (16), provides oxygen to sequencing batch reactor the oneth SBR (13), by the ammonia in water inlet
Nitrogen transformation is oxidation state nitrogen；By real-time control apparatus maintenance dissolved oxygen DO 0.5～1.5mg/L, and monitor pH, set aeration
Time is (ammonia valley point refers to the flex point that pH value rises after falling before), NH before 1～2h and ammonia valley point occur4 +-N is under low oxygen conditions
There is short distance nitration effect, control aeration time to realize NH before ammonia valley point occurs simultaneously4 +The part short distance nitration of-N, poly-
Phosphorus bacterium suction part PO4 3--P；
IV anoxia stirring sets mixing time 0.5～1h, and anoxia can ensure that the NO that will produce during aeration in short-term3 —N passes through
Denitrification is removed, simultaneously by remaining PO4 3--P is removed by denitrification dephosphorization effect；；
VI sedimentation and drawing sets sedimentation time 1～2h, draining after mud-water separation, enters intermediate water tank (17), draining ratio
It is 50%～80%.
Sequencing batch reactor the 2nd SBR:
I water inlet is intake from intermediate water tank (17), sets inflow as the 1/2～3/4 of reactor effective volume, passes through time control
On-off control；
II anoxia stirring sets mixing time 2～3h, by the NH in a SBR water outlet4 +-N and NO2 --N passes through anaerobism ammonia
Oxidation is removed；
IV sedimentation and drawing sets the sedimentation time 1～2h, and draining after mud-water separation, draining ratio is 50%～75%.
In sum, the present invention provides one to utilize excess sludge fermenting mixture to strengthen city domestic sewage advanced nitrogen
The control method of dephosphorization and device, with excess sludge and municipal sewage as object of study, first pass through sequencing batch reactor first
The anaerobic phosphorus release of SBR, aerobic phosphorus absorption and part short distance nitration, denitrification dephosphorization effect carry out Organic substance and the removal of nitrogen phosphorus, sequence
The water outlet of batch reactor the oneth SBR processes through the Anammox of sequencing batch reactor the 2nd SBR and realizes advanced nitrogen,
Improve the denitrification percent of system.Utilize the mud that Sewage Plant self discharges as carbon source, while improving denitrogenation dephosphorizing efficiency
Save the expense of additional carbon；Sludge fermentation mixture is utilized to eliminate the process of mud and separation of fermentative broth, cost-effective,
It is simultaneously achieved sludge reduction to process.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of apparatus of the present invention
In figure: 1 first peristaltic pump；2 excess sludge fermentation tanks；3 first agitators；4 temperature controls
Device processed；5 the oneth pH controllers；6 process controllers；7 computers；8 sewage water tanks；9 fermentations are mixed
Compound holding vessel；10 the 3rd peristaltic pumps；11 second peristaltic pumps；12 first dissolved oxygen controllers；13 sequences
Batch reactor the oneth SBR；14 the 2nd pH controllers；15 second agitators；16 air compressor machines；In the middle of 17
Water tank；18 the 4th peristaltic pumps；19 second dissolved oxygen controllers；20 sequencing batch reactor the 2nd SBR；21——
3rd pH controller；22 the 3rd agitators；
Fig. 2 is the method for operation of sequencing batch reactor SBR.
Detailed description of the invention
In conjunction with accompanying drawing and example, the application patent is further illustrated: as it is shown in figure 1, the present invention includes that excess sludge ferments
Tank, sludge fermentation mixture holding vessel, sewage water tank, intermediate water tank, sequencing batch reactor the oneth SBR, sequencing batch reactor
Two SBR.The effective volume of six devices is 5L, 3L, 30L, 30L, 12L, 9L respectively, and wherein excess sludge fermentation tank, mud are sent out
Ferment mixture holding vessel and sequencing batch reactor SBR are made up of lucite；Intermediate water tank, sewage water tank are by organic plastics system
Become.
This device includes that excess sludge passes through the first pump peristaltic pump (1) and pumps into excess sludge fermentation tank (2), and excess sludge is sent out
First agitator (3), temperature control equipment (4), a pH controller (5) are installed in ferment tank (2)；Excess sludge fermentation tank (2)
Being connected with fermenting mixture holding vessel (9), fermenting mixture holding vessel (9) passes through the second peristaltic pump (11) and sequencing batch reactor
Oneth SBR (13) connects；Sanitary sewage water tank (8) is by the i.e. intake pump of the 3rd peristaltic pump (10) and sequencing batch reactor first
SBR (13) connects.Sequencing batch reactor the oneth SBR (13) is installed the second agitator (15), the first dissolved oxygen controller (12)
With the 2nd pH controller (14)；Aeration head in sequencing batch reactor the oneth SBR (13) is connected with air compressor machine (16), and batch-type is anti-
Device the oneth SBR (13) is answered to be connected with intermediate water tank (17)；Intermediate water tank (17) is reacted with batch-type by the 4th peristaltic pump (18)
Device the 2nd SBR (20) connects.Install the 3rd agitator (22) in sequencing batch reactor the 2nd SBR (20), the second dissolved oxygen controls
Device (19) and the 3rd pH controller (21).It addition, arrange the process controller (6) being connected with computer (7), in order to control first
Peristaltic pump (1), the second peristaltic pump (11), the 3rd peristaltic pump (10), the 4th peristaltic pump (18), the first agitator (3), the second stirring
Device (15), the 3rd agitator (22), temperature controller (4), a pH controller (5), the 2nd pH controller (14), the 3rd pH control
Device processed (21), the first dissolved oxygen controller (12), the second dissolved oxygen controller (19), air compressor machine (16).
The city domestic sewage used in instantiation takes from the anaerobic tank of dependents' district, Beijing, wherein COD
COD 180～200mg/L, NH4 +The concentration of-N 60～70mg/L, PO4 3-The concentration of-P is 5.0～7.5mg/L, and its C/N is 2
～4, C/P < 40, self carbon source cannot meet the purpose of advanced nitrogen dephosphorization.
Specific implementation process is as follows:
Excess sludge fermentation tank is semi batch reacor, and sludge concentration MLSS is 7500～8000mg/L, during sludge retention
Between SRT at 6 days, control pH 10 ± 0.2, temperature is at 30 ± 2 DEG C.The fermentation mixing of 833mL excess sludge is discharged every day according to SRT
Thing (FM) is to fermenting mixture holding vessel, and adds the fresh excess sludge of 833mL to excess sludge fermentation tank.Sludge fermentation is mixed
Leading indicator in compound is as follows: SCOD be 3380 ± 420mg/L, SCFAs be 1221 ± 40mg COD/L, NH4 +-N is 198 ±
20mg/L, PO4 3--P is 95 ± 10mg/L.
The startup of sequencing batch reactor the oneth SBR: inject sequencing batch reactor as seed sludge using short distance nitration mud
Oneth SBR, is simultaneously that former water injects sanitary sewage water tank to add the city domestic sewage of sodium acetate, makes into water C/N than maintaining
6, squeezing into sequencing batch reactor the oneth SBR by intake pump, run 2 cycles every day, draining ratio maintains 70%, Mei Gezhou
Phase includes that, into water, anaerobism stirs, aeration, anoxia stirring, precipitation, and draining is idle, runs reactor under these conditions, is a good
Oxygen end nitrite accumulation rate is more than 95%, and water outlet TP, when below 1mg/L, completes the startup of sequencing batch reactor the oneth SBR
Debugging；
The startup of sequencing batch reactor the 2nd SBR: dirty as inoculation using anaerobic ammonium oxidation granular sludge or floc sludge
Mud injects sequencing batch reactor the 2nd SBR, meanwhile, with NH4 +-N and NO2 -The water distribution that mass concentration ratio is 1:1.3 of-N is for entering
Water injects intermediate water tank, squeezes into sequencing batch reactor the 2nd SBR by peristaltic pump, and water inlet anaerobism stirring simultaneously, as water outlet NH4 +-N
Concentration < 1mg/L, or NO2 --N concentration < during 1mg/L, completes the Start-up and Adjustment of sequencing batch reactor the 2nd SBR；
After sequencing batch reactor the oneth SBR and the 2nd SBR is respectively completed startup, will both series operations.Batch-type reacts
Device the oneth SBR each cycle experiences water inlet and sludge fermentation mixture, anaerobism stirring, aeration, anoxia stirring, sedimentation and drawing 5 successively
Individual process；Sequencing batch reactor the 2nd SBR each cycle experiences water inlet (water outlet of the i.e. the oneth SBR), stirring, sedimentation and drawing 3 successively
Individual process, such as Fig. 2.
Oneth SBR:
I water inlet, fermenting mixture inflow are the 1/2 of reactor effective volume, i.e. 6L.Enter fermenting mixture amount for water inlet
The 3/50 of volume, both of which is controlled by time switch, and after system start-up, the sewage in former water tank enters sequence by intake pump
Batch reactor the oneth SBR, during water inlet, the fermenting mixture in fermenting mixture holding vessel enters first by peristaltic pump
SBR.；
Entering anaerobism agitation phases after the stirring water inlet of II anaerobism, sets mixing time as 3h, polyP bacteria utilizes and ferments
Abundant carbon source in mixture and sanitary sewage releases phosphorus in a large number, and stores a large amount of PHA；
III aeration maintains dissolved oxygen DO 0.5～1.5mg/L by real-time control apparatus, and monitors pH, when setting aeration
Between at 2h (ammonia valley point occur before), NH4 +There is short distance nitration effect in-N, control aeration time at ammonia under low oxygen conditions simultaneously
Valley point can realize NH before occurring4 +The part short distance nitration of-N, polyP bacteria suction part PO4 3--P；
IV anoxia stirring sets mixing time 1h, and anoxia can ensure that the NO that will produce during aeration in short-term3 --N passes through anti-nitre
Change and remove, simultaneously by remaining PO4 3--P is removed by denitrification dephosphorization effect；
V sedimentation and drawing sets sedimentation time 2h, draining after mud-water separation, enters intermediate water tank, and draining ratio is 70%.
2nd SBR:
I water inlet, from middle water tank water intake, is set inflow as the 1/2 of reactor effective volume, i.e. 4.5L, is opened by time control
Close and control；
II anoxia stirring sets mixing time 3h, by the NH in a SBR water outlet4 +-N and NO2 --N passes through Anammox
Effect is removed；
IV sedimentation and drawing sets sedimentation time 2h, and draining after mud-water separation, draining ratio is 60%.
Test result indicate that: after stable, in water outlet, COD concentration is 30～43mg/L, NH4 +-N concentration be 0.2～
2.5mg/L, TN clearance is 80～85%；PO4 3--P concentration is 0.1～0.7mg/L, and clearance is 90%～97%.
Claims (2)
1. utilize fermented sludge to realize municipal sewage part short distance nitration and the device of Anammox, it is characterised in that: first
Pump peristaltic pump (1) installs the first agitator (3), temperature control in connecting excess sludge fermentation tank (2), excess sludge fermentation tank (2)
Device processed (4) and a pH controller (5)；Excess sludge fermentation tank (2) is connected with fermenting mixture holding vessel (9), and fermentation is mixed
Compound holding vessel (9) is connected with sequencing batch reactor the oneth SBR (13) by the second peristaltic pump (11)；Sanitary sewage water tank (8)
It is connected with sequencing batch reactor the oneth SBR (13) by the i.e. intake pump of the 3rd peristaltic pump (10)；Sequencing batch reactor the oneth SBR
(13) the second agitator (15), the first dissolved oxygen controller (12) and the 2nd pH controller (14) are installed in；Sequencing batch reactor
Aeration head in oneth SBR (13) is connected with air compressor machine (16), and sequencing batch reactor the oneth SBR (13) is with intermediate water tank (17) even
Connect；Intermediate water tank (17) is connected with sequencing batch reactor the 2nd SBR (20) by the 4th peristaltic pump (18)；Sequencing batch reactor
Two SBR (20) install the 3rd agitator (22), the second dissolved oxygen controller (19) and the 3rd pH controller (21)；It addition, set
Put the process controller (6) being connected with computer (7), in order to control the first peristaltic pump (1), the second peristaltic pump (11), the 3rd compacted
Dynamic pump (10), the 4th peristaltic pump (18), the first agitator (3), the second agitator (15), the 3rd agitator (22), temperature control
Device (4), a pH controller (5), the 2nd pH controller (14), the 3rd pH controller (21), the first dissolved oxygen controller (12),
Second dissolved oxygen controller (19) and air compressor machine (16).
2. the method utilizing device described in claim 1, it is characterised in that comprise the following steps:
(1) startup of excess sludge fermentation tank: excess sludge fermentation tank (2) is semi batch reacor, sludge retention time SRT exists
6～20 days, control pH 9～10；Excess sludge fermenting mixture is discharged every day to fermenting mixture holding vessel (9) according to SRT
And add the fresh excess sludge of equal-volume to excess sludge fermentation tank (2)；
(2) startup of sequencing batch reactor the oneth SBR: inject sequencing batch reactor the as seed sludge using short distance nitration mud
One SBR (13), is simultaneously that former water injects sanitary sewage water tank (8) to add the city domestic sewage of sodium acetate, makes into water C/N ratio
Maintain 5～6, squeeze into sequencing batch reactor the oneth SBR (13) by the i.e. intake pump of the 3rd peristaltic pump (10), run 2～3 every day
In the individual cycle, draining ratio maintains 50～80%, and each cycle includes that, into water, anaerobism stirs, aeration, anoxia stirring, precipitation, row
Water, idle, run reactor under these conditions, when aerobic end nitrite accumulation rate is more than 95%, water outlet TP 1mg/L with
Time lower, complete the Start-up and Adjustment of sequencing batch reactor the oneth SBR (13)；
(3) startup of sequencing batch reactor the 2nd SBR: using anaerobic ammonium oxidation granular sludge or floc sludge as seed sludge
Inject sequencing batch reactor the 2nd SBR (20), meanwhile, with NH4 +-N and NO2 -The mass concentration ratio of-N is joining of 1:1～1.3
Water injects intermediate water tank (17) for water inlet, squeezes into sequencing batch reactor the 2nd SBR (20) by peristaltic pump, and water inlet anaerobism simultaneously is stirred
Mix, as water outlet NH4 +-N concentration < 1mg/L, or NO2 --N concentration < during 1mg/L, adjust by the startup completing sequencing batch reactor the 2nd SBR
Examination；
(4) after sequencing batch reactor the oneth SBR and the 2nd SBR is respectively completed startup, by both series operations: sequencing batch reactor
Oneth SBR (13) each cycle experiences water inlet and sludge fermentation mixture, anaerobism stirring, aeration, anoxia stirring, sedimentation and drawing successively
5 processes；Sequencing batch reactor the 2nd SBR (20) each cycle experiences water inlet, anoxia stirring, 3 processes of sedimentation and drawing successively；
Sequencing batch reactor the oneth SBR:
I water inlet and fermenting mixture set inflow as the 1/2～4/5 of reactor effective volume, enter fermenting mixture amount for entering
The 1/50～1/10 of water volume, both of which is controlled by time switch, and after system start-up, the sewage in sewage water tank (8) passes through
Intake pump (10) enters sequencing batch reactor the oneth SBR (13), and during water inlet, the fermentation in excess sludge fermentation tank (2) mixes
Compound enters a SBR (13) by the second peristaltic pump (11)；In fermenting mixture, the index of material is as follows: SCOD is 3380 ±
420mg/L, SCFAs are 1221 ± 40mg COD/L, NH4 +-N is 198 ± 20mg/L, PO4 3--P is 95 ± 10mg/L；
Enter anaerobism agitation phases after the stirring water inlet of II anaerobism, set mixing time as 3～3.5h；
III aeration opens air compressor machine (16), provides oxygen to sequencing batch reactor the oneth SBR (13), is turned by the ammonia nitrogen in water inlet
Turn to oxidation state nitrogen；By real-time control apparatus maintenance dissolved oxygen DO 0.5～1.5mg/L, and monitor pH, set aeration time
Before 1～2h and ammonia valley point occur；
IV anoxia stirring sets mixing time 1～1.5h；
VI sedimentation and drawing sets sedimentation time 1～2h, draining after mud-water separation, enters intermediate water tank (17), and draining ratio is
50%～80%；
Sequencing batch reactor the 2nd SBR:
I water inlet is intake from intermediate water tank (17), sets inflow as the 1/2～3/4 of reactor effective volume, passes through time switch
Control；
II anoxia stirring sets mixing time 2～3h；
IV sedimentation and drawing sets the sedimentation time 1～2h, and draining after mud-water separation, draining ratio is 50%～75%.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106865773A (en) * | 2017-04-07 | 2017-06-20 | 北京工业大学 | Add the apparatus and method that azanol realizes part short distance nitration Anammox |
| CN107021560A (en) * | 2017-06-09 | 2017-08-08 | 北京工业大学 | The method and apparatus for realizing sewerage short-cut nitration denitrification in SBR using sludge fermentation thing |
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