CN107021560A - The method and apparatus for realizing sewerage short-cut nitration denitrification in SBR using sludge fermentation thing - Google Patents
The method and apparatus for realizing sewerage short-cut nitration denitrification in SBR using sludge fermentation thing Download PDFInfo
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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
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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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
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/16—Total nitrogen (tkN-N)
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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
- C02F2209/22—O2
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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Abstract
The method and apparatus for realizing sewerage short-cut nitration denitrification in SBR using sludge fermentation thing, belong to municipal sewage treatment and sludge biochemical treatment field.This method is by adding difference (to NOB inhibition level stronger) of the sludge fermentation thing to nitrobacteria (ammonia oxidizing bacteria AOB and NOB NOB) inhibitory activity, so as to reach the purpose for eluriating NOB.This method is applied to the SBR various methods of operation, and the present invention realizes higher nitrous accumulation rate and nitrogen removal rate, so as to reach purposes of the low C/N than the advanced nitrogen of city domestic sewage by taking the AOA SBR methods of operation as an example.The present invention can also save additional carbon cost, improve nitric efficiency by by excess sludge fermentate and sanitary sewage mixed processing, can solve the problem that sanitary sewage can not stablize the problem of realizing short distance nitration, while realizing that sludge reduction is handled.
Description
Technical field
The present invention relates to the method and apparatus for realizing sewerage short-cut nitration denitrification in SBR using sludge fermentation thing
Optimal control, belongs to municipal sewage treatment and sludge biochemical treatment field.This technique is applied to low C/N city domestic sewages
Strengthen advanced nitrogen.
Background technology
Bio-denitrification technology is widely used in city domestic sewage treatment plant.But carbon source in urban sewage is not enough asks
Topic limits the application of traditional biological denitrification process.Sewage treatment plant inevitably produces substantial amounts of excess sludge simultaneously, remains
The processing disposal of remaining sludge is also a great problem.Excess sludge is the material produced in biological wastewater treatment process, main organic
Composition is protein, carbohydrate and fat.Excess sludge anaerobic fermentation technology can produce a large amount of short chain fatty acids, Ke Yizuo
For the high-quality carbon source in biological denitrification process, while realizing that sludge reduction is handled.Exploitation excess sludge internal carbon source will can be sent out
Zymotic fluid and sludge separation Selection utilization zymotic fluid, can also directly utilize its sludge fermentation mixture.In view of operating cost etc.
Practical problem, it is only too high using sludge fermentation supernatant cost, can be with Selection utilization excess sludge fermenting mixture.
Nitrobacteria is a class chemotrophy type bacterium, mainly thin including ammonia oxidizing bacteria (AOB) and nitrite-oxidizing
The class of bacterium (NOB) two, is respectively nitrite nitrogen by mineralized nitrogen, nitrite nitrogen is converted into nitrate nitrogen, it is biological in sanitary sewage
Irreplaceable effect is played in denitrification process.Short-cut denitrification technology is to control biological nitrification process in the ammoxidation stage,
Denitrification is then directly carried out, and then realizes energy-saving purpose.Short distance nitration is the key of short-cut denitrification technology, and realizes
The key of short distance nitration is the suppression and elutriation for the enrichment and NOB for realizing AOB.
The method and apparatus for realizing sewerage short-cut nitration denitrification in SBR using sludge fermentation thing, with excess sludge and
Municipal sewage is research object, and elutriation is reached to the difference of nitrobacteria (AOB and NOB) rejection ability using sludge fermentation thing
NOB effect, by sequencing batch reactor SBR short distance nitration, anoxic denitrification carries out the removal of organic matter and nitrogen so as to reality
Show advanced nitrogen, improve the nitrogen removal rate of system.It is de- improving by the use of the sludge of sewage plant itself discharge as carbon source
The expense of additional carbon is saved while nitrogen efficiency；The mistake of sludge and separation of fermentative broth is eliminated using sludge fermentation mixture
Journey, it is cost-effective, while realizing sludge reduction processing.
The content of the invention
In view of the shortcomings of the prior art, the present invention proposes that one kind realizes sewerage short-cut nitre using sludge fermentation thing in SBR
Change denitrifying method and apparatus, excess sludge fermenting mixture is pumped into the sequencing batch reactor for handling low C/N sanitary sewages
In SBR, sludge fermentation thing is added so that the activity of NOB is suppressed so that in aerobic stage mineralized nitrogen
For nitrite nitrogen, anoxia stirring is entered back into, denitrification is carried out, nitrite nitrogen is removed, so as to reach the purpose of advanced nitrogen.
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, and seed sludge is city
City's secondary sedimentation tank of sewage treatment work spoil disposal, sludge retention time SRT was at 6~20 days, and pH is 9~10 for control；Discharged daily according to SRT
Excess sludge fermenting mixture is to fermenting mixture holding vessel (9) and adds isometric fresh excess sludge to excess sludge fermentation
Tank (2)；
(2) sequencing batch reactor SBR startup：Sequencing batch reactor is injected using complete nitrification sludge as seed sludge
SBR (13), sanitary sewage water tank (8) is injected by raw water of actual cities sanitary sewage, is intake pump by the 3rd peristaltic pump
(10) sequencing batch reactor SBR (13) is squeezed into, while to squeeze into batch-type by the second peristaltic pump (11) anti-for sludge fermentation mixture
Device SBR (13) is answered, 2~4 cycles are run daily, draining ratio maintains 50~80%, and each cycle includes water inlet, and anaerobism is stirred
Mix, be aerated, anoxia stirring, precipitation, draining runs reactor under these conditions.
Sequencing batch reactor SBR：
I water inlets, fermenting mixture set inflow as the 1/2~4/5 of reactor effective volume, and entering fermenting mixture amount is
Enter the 1/50~1/10 of water volume, both of which is by time switch control, after system starts, the sewage in sewage water tank (8) leads to
Cross intake pump (10) and enter sequencing batch reactor SBR (13), during water inlet, the fermentation mixing in excess sludge fermentation tank (2)
Thing enters SBR (13) by the second peristaltic pump (11)；
The stirring water inlet of II anaerobism enters anaerobism agitation phases after finishing, and sets mixing time as 3~3.5h；
III aerations open air compressor machine (16), and oxygen is provided to sequencing batch reactor SBR (13), and the ammonia nitrogen in water inlet is turned
Turn to oxidation state nitrogen；Dissolved oxygen DO is maintained in 1~4mg/L by real-time control apparatus, and monitors pH, setting aeration time is 1
Before~3h and ammonia valley point occur (ammonia valley point refers to the flex point that pH value rises after falling before)；
2~5h of IV anoxia stirrings setting mixing time；
VI sedimentation and drawings set draining after 1~2h of sedimentation time, mud-water separation, and draining ratio is 50%~80%.
In summary, the present invention provides a kind of utilization sludge fermentation thing and sewerage short-cut nitration denitrification is realized in SBR
Method and apparatus, using excess sludge and municipal sewage as research object, using sludge fermentation thing to nitrobacteria (AOB and NOB)
The difference of rejection ability reaches the effect for eluriating NOB, so as to pass through sequencing batch reactor SBR short-cut nitrification and denitrification, anoxic
The removal that denitrification carries out organic matter and nitrogen realizes advanced nitrogen, improves system nitrogen removal rate.Utilize sewage plant itself
The sludge of discharge saves the expense of additional carbon as carbon source while nitric efficiency is improved；Mixed using sludge fermentation
Thing eliminates the process of sludge and separation of fermentative broth, cost-effective, while realizing sludge reduction processing.
Brief description of the drawings：
Fig. 1 is the structural representation of apparatus of the present invention
In figure：1 --- the first peristaltic pump；2 --- excess sludge fermentation tank；3 --- the first agitator；4 --- temperature control
Device processed；5 --- the first pH controllers；6 --- process controller；7 --- computer；8 --- sewage water tank；9 --- fermentation is mixed
Compound holding vessel；10 --- the 3rd peristaltic pump；11 --- the second peristaltic pump；12 --- the first dissolved oxygen controller；13 --- sequence
Batch reactor SBR；14 --- the 2nd pH controllers；15 --- the second agitator；16 --- air compressor machine；
Fig. 2 is the sequencing batch reactor SBR method of operation.
Embodiment
The application patent is further illustrated with reference to accompanying drawing and example：As shown in figure 1, the present invention includes excess sludge fermentation
Tank, sludge fermentation mixture holding vessel, sewage water tank, sequencing batch reactor SBR.The effective volume of four devices be respectively 5L,
3L, 30L, 12L, wherein excess sludge fermentation tank, sludge fermentation mixture holding vessel and sequencing batch reactor SBR are by lucite
It is made.
The device includes excess sludge and is pumped into excess sludge fermentation tank (2), excess sludge hair by the first pump peristaltic pump (1)
First agitator (3), temperature control equipment (4), the first pH controllers (5) are installed in fermentation tank (2)；Excess sludge fermentation tank (2)
It is connected with fermenting mixture holding vessel (9), fermenting mixture holding vessel (9) passes through the second peristaltic pump (11) and sequencing batch reactor
SBR (13) connections；Sanitary sewage water tank (8) is that intake pump (10) connects with sequencing batch reactor SBR (13) by the 3rd peristaltic pump
Connect.Second agitator (15), the first dissolved oxygen controller (12) and the 2nd pH controllers are installed in sequencing batch reactor SBR (13)
(14)；Aeration head in sequencing batch reactor SBR (13) is connected with air compressor machine (16).In addition, setting what is be connected with computer (7)
Process controller (6), to control the first peristaltic pump (1), the second peristaltic pump (11), the 3rd peristaltic pump (10), the first agitator
(3), the second agitator (15), temperature controller (4), the first pH controllers (5), the 2nd pH controllers (14), air compressor machine (16).
The city domestic sewage used in instantiation is derived from the septic tank of Beijing dependents' district, wherein COD
COD is in 180~200mg/L, NH4 +- N concentration is in 60~70mg/L, and its C/N is 2~4, and itself carbon source can not meet depth and take off
The purpose of nitrogen.
Specific implementation process is as follows：
Excess sludge fermentation tank is semi batch reacor, and seed sludge concentration MLSS stops in 7500~8000mg/L, sludge
Time SRT is stayed at 6 days, pH is 10 ± 0.2 for control, and temperature is at 30 ± 2 DEG C.Discharge the fermentation of 833mL excess sludges daily according to SRT
Mixture (FM) adds 833mL fresh excess sludge to excess sludge fermentation tank to fermenting mixture holding vessel.Sludge is sent out
The excess sludge that ferment thing is discharged using municipal sewage plant is in pH in 9~10, sludge concentration in 7500~8000mg/L, temperature
It is the material of generation of being fermented under conditions of 6~20 days in 30 ± 2 DEG C, residence time.
Leading indicator in sludge fermentation mixture is as follows：MLSS is in 4500~5500mg/ for sludge fermentation thing sludge concentration
L, SCOD are 3380 ± 420mg/L, and SCFAs is 1221 ± 40mg COD/L, NH4 +- N is 198 ± 20mg/L.
Sequencing batch reactor SBR startup：Sequencing batch reactor SBR is injected using complete nitrification sludge as seed sludge
(13) sanitary sewage water tank (8), is injected by raw water of actual cities sanitary sewage, is that intake pump (10) is beaten by the 3rd peristaltic pump
Enter sequencing batch reactor SBR (13), while sludge fermentation mixture squeezes into sequencing batch reactor SBR by the second peristaltic pump (11)
(13) 2 cycles, are run daily, and draining ratio maintains 50~80%, and each cycle includes water inlet, anaerobism stirring, aeration, anoxic
Stirring, precipitation, draining runs reactor under these conditions.
Sequencing batch reactor SBR：
I water inlets, 54% that fermenting mixture inflow is reactor effective volume, i.e. 6.5L.Entering fermenting mixture amount is
Enter the 1/18.6 of water volume, i.e. 350ml, both of which is by time switch control, after system starts, the sewage in raw water water tank leads to
Intake pump is crossed into sequencing batch reactor SBR, during water inlet, the fermenting mixture in fermenting mixture holding vessel is by wriggling
Pump enters SBR；
The stirring water inlet of II anaerobism enters anaerobism agitation phases after finishing, and sets mixing time as 3h；
III aerations maintain dissolved oxygen DO in 1~3mg/L by real-time control apparatus, and monitor pH, and setting aeration time exists
3.25h (before ammonia valley point occurs), NH4 +Synchronous short distance nitration occurs in the case where controlling and adding in real time sludge fermentation thing collective effect for-N
Denitrification, while achievable NH before aeration time control is occurred in ammonia valley point4 +- N short distance nitration；
IV anoxia stirrings set mixing time 4.5h, and delay anoxic can ensure the NO that will be produced when being aerated2 -- N passes through anti-
Nitrification is removed；
V sedimentation and drawings set draining after sedimentation time 1h, mud-water separation, are discharged into intermediate water tank, and draining ratio is 57%.
Test result indicates that：After stable, COD concentration is 30~43mg/L, NH in water outlet4 +- N concentration be 0.2~
2.5mg/L, it is 85~90% that nitrous accumulation rate, which can reach more than 99%, TN clearances,.
Claims (3)
1. the method for sewerage short-cut nitration denitrification is realized in SBR using sludge fermentation thing, it is characterised in that the following dress of application
Put, the device is pumped into excess sludge fermentation tank (2), excess sludge fermentation tank including excess sludge by the first pump peristaltic pump (1)
(2) the first agitator (3), temperature control equipment (4) and the first pH controllers (5) are installed in；Excess sludge fermentation tank (2) and hair
Ferment mixture holding vessel (9) is connected, and fermenting mixture holding vessel (9) passes through the second peristaltic pump (11) and sequencing batch reactor SBR
(13) connect；Sanitary sewage water tank (8) is that intake pump (10) is connected with sequencing batch reactor SBR (13) by the 3rd peristaltic pump；
Second agitator (15), the first dissolved oxygen controller (12) and the 2nd pH controllers are installed in sequencing batch reactor SBR (13)
(14)；Aeration head in sequencing batch reactor SBR (13) is connected with air compressor machine (16)；In addition, setting what is be connected with computer (7)
Process controller (6), to control the first peristaltic pump (1), the second peristaltic pump (11), the 3rd peristaltic pump (10), the first agitator
(3), the second agitator (15), temperature controller (4), the first pH controllers (5), the 2nd pH controllers (14) and air compressor machine
(16)。
2. utilize the method 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, and seed sludge is that city is dirty
Water treatment plant's sludge from final clarifier, sludge retention time SRT was at 6~20 days, and pH is 9~10 for control；Residue is discharged according to SRT daily
Sludge fermentation mixture is to fermenting mixture holding vessel (9) and adds isometric fresh excess sludge to excess sludge fermentation tank
(2)；
(2) sequencing batch reactor SBR startup：Sequencing batch reactor SBR is injected using complete nitrification sludge as seed sludge
(13) sanitary sewage water tank (8), is injected by raw water of actual cities sanitary sewage, is that intake pump (10) is beaten by the 3rd peristaltic pump
Enter sequencing batch reactor SBR (13), while sludge fermentation mixture squeezes into sequencing batch reactor SBR by the second peristaltic pump (11)
(13) 2~4 cycles, are run daily, and draining ratio maintains 50~80%, and each cycle includes water inlet, and anaerobism stirring is aerated,
Anoxia stirring, precipitation, draining runs reactor under these conditions；
Sequencing batch reactor SBR：
I water inlets, sludge fermentation mixture set inflow as the 1/3~4/5 of reactor effective volume, enter sludge fermentation mixture
Measure is that both of which passes through time switch control, after system starts, the dirt in sewage water tank (8) into the 1/50~1/10 of water volume
Water enters sequencing batch reactor SBR (13), during water inlet, the fermentation in excess sludge fermentation tank (2) by intake pump (10)
Mixture enters SBR (13) by the second peristaltic pump (11)；
The stirring water inlet of II anaerobism enters anaerobism agitation phases after finishing, and sets mixing time as 2~3.5h；
III aerations open air compressor machine (16), provide oxygen to sequencing batch reactor SBR (13), are by the mineralized nitrogen in water inlet
Oxidation state nitrogen；Dissolved oxygen DO is maintained in 1~4mg/L by real-time control apparatus, and monitors pH, setting aeration time is in 1~3h
And before ammonia valley point occurs；Ammonia valley point refers to the flex point that pH value rises after falling before；
2~5h of IV anoxia stirrings setting mixing time；
VI sedimentation and drawings set draining after 1~2h of sedimentation time, mud-water separation, and draining ratio is 50%~80%.
3. method according to claim 2, it is characterised in that the SBR methods of operation include AOA-SBR or intermittent aerating
AOAOAO-SBR。
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626563A (en) * | 2018-12-21 | 2019-04-16 | 海南大学 | A kind of domestic sewage in rural areas deep denitrification method |
| CN109867359A (en) * | 2019-04-03 | 2019-06-11 | 北京工业大学 | Utilize the method and apparatus of sludge fermentation mixture short-cut nitrification and denitrification coupling unit Anammox advanced nitrogen |
| CN109879422A (en) * | 2019-03-15 | 2019-06-14 | 南京理工大学 | Method for realizing short-cut nitrification and denitrification by utilizing high light intensity |
| CN109879427A (en) * | 2019-04-03 | 2019-06-14 | 北京工业大学 | The method and apparatus that city domestic sewage stablizes short distance nitration are fast implemented using biological reinforcing technology joint real-time control |
| CN109912031A (en) * | 2019-04-02 | 2019-06-21 | 北京工业大学 | The method and apparatus of heterotrophism coupling Anammox advanced nitrogen are realized in AOA-SBBR |
| CN109912032A (en) * | 2019-04-02 | 2019-06-21 | 北京工业大学 | The method and apparatus that heterotrophism couples mud decrement synchronous denitrification dephosphorizing with autotrophy are realized in AOA-SBR |
| CN109912030A (en) * | 2019-04-02 | 2019-06-21 | 北京工业大学 | The method and apparatus of heterotrophism and autotrophy coupling depth denitrogenation synchronous sludge decrement are realized in AOA-SBR |
| CN115180711A (en) * | 2022-07-22 | 2022-10-14 | 北京工业大学 | Device and method for realizing short-cut nitrification of low-ammonia-nitrogen wastewater by side-stream sludge fermentation acid production |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626563A (en) * | 2018-12-21 | 2019-04-16 | 海南大学 | A kind of domestic sewage in rural areas deep denitrification method |
| CN109879422A (en) * | 2019-03-15 | 2019-06-14 | 南京理工大学 | Method for realizing short-cut nitrification and denitrification by utilizing high light intensity |
| CN109879422B (en) * | 2019-03-15 | 2022-05-13 | 南京理工大学 | Method for realizing short-cut nitrification and denitrification by utilizing high light intensity |
| CN109912031A (en) * | 2019-04-02 | 2019-06-21 | 北京工业大学 | The method and apparatus of heterotrophism coupling Anammox advanced nitrogen are realized in AOA-SBBR |
| CN109912032A (en) * | 2019-04-02 | 2019-06-21 | 北京工业大学 | The method and apparatus that heterotrophism couples mud decrement synchronous denitrification dephosphorizing with autotrophy are realized in AOA-SBR |
| CN109912030A (en) * | 2019-04-02 | 2019-06-21 | 北京工业大学 | The method and apparatus of heterotrophism and autotrophy coupling depth denitrogenation synchronous sludge decrement are realized in AOA-SBR |
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| CN109867359A (en) * | 2019-04-03 | 2019-06-11 | 北京工业大学 | Utilize the method and apparatus of sludge fermentation mixture short-cut nitrification and denitrification coupling unit Anammox advanced nitrogen |
| CN109879427A (en) * | 2019-04-03 | 2019-06-14 | 北京工业大学 | The method and apparatus that city domestic sewage stablizes short distance nitration are fast implemented using biological reinforcing technology joint real-time control |
| CN109879427B (en) * | 2019-04-03 | 2021-09-10 | 北京工业大学 | Method and device for rapidly realizing stable short-cut nitrification of municipal domestic sewage by combining bio-augmentation technology with real-time control |
| CN109867359B (en) * | 2019-04-03 | 2021-11-26 | 北京工业大学 | Method and device for coupling partial anaerobic ammonia oxidation deep denitrification by sludge fermentation mixture shortcut nitrification and denitrification |
| CN115180711A (en) * | 2022-07-22 | 2022-10-14 | 北京工业大学 | Device and method for realizing short-cut nitrification of low-ammonia-nitrogen wastewater by side-stream sludge fermentation acid production |
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