CN107032489A - Realize the method that the short distance Anammoxs of continuous stream AOA half couple endogenous denitrification - Google Patents
Realize the method that the short distance Anammoxs of continuous stream AOA half couple endogenous denitrification 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
- C02F3/308—Biological phosphorus removal
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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
- 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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Abstract
The method that the short distance Anammoxs of continuous stream AOA half couple endogenous denitrification is realized, belongs to sewage treatment area.The device mainly by sewage raw water box, detest/good/anoxia cell the AOA reactors, the sedimentation basin that constitute constitute.Sanitary sewage is entered the anaerobism section of AOA reactors by raw water box first, and the Denitrifying Phosphate Accumulating Organisms of anaerobism section utilize the organic synthesis PHA in sanitary sewage, while carrying out anaerobic phosphorus release；Then mixed liquor enters aerobic section, and the part ammonia nitrogen in aerobic section, mixed liquor is oxidized to nitrite nitrogen by ammonia oxidizing bacteria, meanwhile, aerobic phosphorus absorption reaction occurs for polyP bacteria；Anoxic section is finally entered, the anaerobic ammonia oxidizing bacteria on filler is anchored at using the NH in mixed liquor4 +N and NO2 ‑Anammox reaction occurs for N, simultaneously, the nitrate nitrogen part that Anammox reaction is produced is removed by denitrifying bacterium by using the internal carbon source denitrification itself stored, and another part is removed by polyP bacteria denitrification dephosphorization, so as to realize the purpose of sewage deep denitrogenation dephosphorizing.
Description
Technical field
The present invention relates to a kind of side for realizing the short distance Anammoxs of continuous stream AOA half coupling endogenous denitrification of continuous stream
Method, belongs to sewage treatment area.
Background technology
In recent years, the phenomenon of body eutrophication is increasingly serious, and this living standard for being primarily due to people is improved, and is made
A large amount of sanitary sewages and industrial wastewater discharge rich in elements such as nitrogen, phosphorus into natural waters such as river, lakes, algae is a large amount of
Breeding, dissolved oxygen is too low, and fishes and shrimps mortality, water quality deteriorates, and the production and living and sustainable development to people are caused
Serious influence.Therefore, body eutrophication problem has caused extensive concern and paid attention to.At present, at domestic sewage
In place of the denitrification dephosphorization technique all Shortcomings for managing factory, such as：Energy consumption is higher, it is necessary to add outer carbon source, considerably increases at sewage
The cost of reason.Therefore, Novel low-consumption, autotrophic denitrification technique are found extremely urgent.
At present, Anammox is widely studied as a kind of autotrophic denitrification technology.Anammox is using ammonia nitrogen as electricity
Sub- donor, nitrite nitrogen is electron acceptor, the denitrification of autotrophic organism by two kinds of nitrogen transformation for nitrogen and with the nitrate nitrogen of part
Process.The energy that the process is produced is available for anaerobic ammonia oxidizing bacteria to survive under anaerobic, just can be realized without adding organic matter
The part of nitrogen is removed in sewage.And this process is needed using nitrite nitrogen as substrate, therefore typically it is combined with short distance nitration technology.
Short distance nitration be under aerobic condition, ammonia oxidation bacteria by ammonium oxidation into nitrite nitrogen so that needed for providing Anammox
Nitrite nitrogen.The two processes are combined, has both saved from the aeration quantity needed for nitrite nitrogen to nitrate nitrogen process, has saved again
Carbon source, is especially suitable for China's low ratio of carbon to ammonium city domestic sewage.But, short distance nitration anaerobic ammonia oxidation process can also be generated about
The nitrate nitrogen of water inlet total nitrogen concentration 10%, this not only increases water outlet total nitrogen concentration, can also cause the wasting of resources.Continuous stream AOA
Half short distance Anammox couples endogenous denitrification technique and organically combines endogenous denitrification and short distance nitration Anammox
Together, sewage autotrophic denitrification had both been realized, has eliminated in Anammox course of reaction and produces further through the mode of endogenous denitrification
Raw nitrate nitrogen, has reached the purpose of advanced nitrogen.
The content of the invention
The purpose of the present invention be exactly remove sewage in nitrogen and phosphorus element while reduction municipal wastewater treatment plant energy resource consumption with
Expense, and propose the method and apparatus that the short distance Anammoxs of continuous stream AOA half couple endogenous denitrification.It is raw in the device
Sewage living is entered the anaerobism section of AOA reactors by raw water box first, and the Denitrifying Phosphate Accumulating Organisms of anaerobism section are utilized in sanitary sewage
PHA in organic synthesis body, while carrying out anaerobic phosphorus release；Then mixed liquor enters aerobic section, is improving the water conservancy of whole process
Part short distance nitration, i.e. short distance nitration bacterium are carried out under residence-time conditions under conditions of low dissolved oxygen by partConversion
ForAnoxic section is subsequently entered, the anaerobic ammonia oxidizing bacteria on filler is anchored at using in mixed liquorWith
Generation Anammox reaction generation N2WithProduceBy endogenous denitrification into N2.By short distance nitration with detesting
Anaerobic ammonium oxidation and endogenous denitrification realize advanced nitrogen.PolyP bacteria releases phosphorus during aerobic/anaerobic alternation response, inhales phosphorus, real
Now go the purpose of phosphorus in water removal.The method realizes half short distance nitration with device under conditions of the water conservancy residence time is improved, simultaneously
Enrichment anaerobic ammonia oxidizing bacteria is effectively withheld using filler, biological carbon and phosphorous removal effect is effectively increased in the case of not additional carbon
Really.
1) stable short distance nitration endogenous denitrification, sludge double back are realized by existing sludge dual reflux AOA systems first
Stream AOA systems have two sludge refluxes, wherein the first sludge reflux is to the first lattice anaerobism section, the second sludge reflux to the first lattice
Anoxic section, reflux ratio is 100%；System anaerobism volume：Aerobic volume：Anoxic volume=1:1:2；Aerobic zone dissolved oxygen concentration
For 1.5-3mg/L；System hydraulic detention time is 16h；100-300d of sludge age.
2) on this basis, half short distance nitration is realized by shortening the overall water conservancy residence time of reactor.Regulation reaction
The overall water conservancy residence time of device is 8-12h, when aerobic last water outlet keeps ammonia nitrogen concentration：Nitrite nitrogen concentration=1:1.32 it is left
The right side, and maintain more than 20d.I.e. it is believed that half short distance nitration reaches stabilization, then the filler for being enriched with anaerobic ammonia oxidizing bacteria is delivered
Anoxic section (2.5) in continuous stream AOA reactors (2), filler packing ratio is 30%-35%.The second sludge is simultaneously closed off to return
Stream.In this stage, municipal sewage, successively down through the anaerobism section of AOA reactors, aerobic section, anoxic section, is divided by water (flow) direction
Not carry out anaerobic phosphorus release, aerobic phosphorus absorption and half short distance nitration, Anammox reaction couple endogenous denitrification, by having in sewage
Machine thing, ammonia nitrogen and phosphorus ligands.
3) addition filler initial stage, because system is not yet stablized, by measuring the surplus of water ammonia nitrogen and nitrous, adjust aerobic
The concentration of area's dissolved oxygen, organic matter, total nitrogen when AOA reactors and total tp removal rate respectively reach 80%, 90%, 90% with
On, you can think that the short distance Anammoxs of continuous stream AOA half coupling endogenous denitrification system starts successfully.
After starting successfully, the COD of detection Inlet and outlet water, ammonia nitrogen, nitrite nitrogen, the concentration of nitrate nitrogen and phosphorus, analysis system daily
System operation conditions, to make corresponding micro-adjustment in time.Maintain the organic matter, total nitrogen and total tp removal rate point of AOA reactors
80%, 90%, more than 90% is not reached,
The short distance Anammoxs of continuous stream AOA half of the present invention couple endogenous denitrification, compared with the prior art with following
Advantage：
(1) organic matter in municipal sewage is fully utilized by Denitrifying Phosphate Accumulating Organisms, reduces follow-up organic matter to anaerobism ammonia
The influence of oxidation bacteria, while Anammox reacts, Anammox is reacted the endogenous anti-nitre of part nitrate nitrogen produced
Change and remove, realize the purpose of advanced nitrogen.
(2) the aerobic short distance nitration area dissolving of the short distance Anammoxs of continuous stream AOA half coupling endogenous denitrification reactor
Oxygen concentration control is in 1.5-3mg/L, and follow-up Anammox reaction does not need carbon source, and Anammox bacteria growing is slow
Slowly, sludge yield is low, so reducing cost in denitrification process.
Brief description of the drawings
Fig. 1 is the apparatus structure that continuous stream municipal sewage short distance nitration Anammox couples endogenous denitrification advanced nitrogen
Schematic diagram.
In Fig. 1：1 is raw water water tank, and 2 be AOA reactors, and 3 be sedimentation basin, and 1.1 be raw water water tank overflow pipe, and 1.2 be original
Water tank blow-down pipe, 2.1 be water inlet pipe, and 2.2 be intake pump, and 2.3 be anaerobism section, and 2.4 be aerobic section, and 2.5 be anoxic section, 2.6
It is aeration head for agitator, 2.7,2.8 be aeration tube, and 2.9 be air compressor machine, and 2.10 be filler, and 3.1 be outlet pipe, and 3.2 be sludge
Return duct, 3.3 be sludge reflux pump, and 3.4 be mud discharging pipe.
Embodiment：
It is a kind of to realize the system that the short distance Anammoxs of continuous stream AOA half couple endogenous denitrification, it is characterised in that：Bag
Include the municipal sewage raw water box (1) being linked in sequence, AOA reactors (2), sedimentation basin (3)；Municipal sewage raw water box (1) includes overflowing
Flow tube (1.1) and blow-down pipe (1.2)；Municipal sewage raw water box (1) is reacted by water inlet pipe (2.1) and intake pump (2.1) with AOA
Device (2) is connected；AOA reactors (2) include 8 cell compartments, by water (flow) direction, are divided into two lattice anaerobism sections, two lattice aerobic sections, four lattice
Anoxic section, each cell compartment by the water flow hole of water (flow) direction up and down staggeredly by being connected to prevent the generation of short flow phenomenon；Aerobic section
(2.5) persistently it is aerated using air compressor machine (2.9) and aeration tube (2.8), aeration head (2.7)；Anoxic section (2.5) is placed with attachment anaerobism
The filler (2.10) of ammonia oxidation bacteria；Every lattice of AOA reactors (2) are respectively equipped with agitator (2.6)；AOA reactors (2) are by going out
Water pipe (3.1) is connected with sedimentation basin (3)；A part of sludge in sedimentation basin passes through mud return line (3.2) and sludge reflux pump
(3.3) the first lattice anaerobism section (2.3) of AOA reactors (2) is back to, excess sludge is discharged by mud discharging pipe (3.4).
Using Certain University in Beijing dependents' district septic tank wastewater as process object, specific water quality is as follows：COD is 150-300mg/L,
NH4 +- N is 40-85mg/L, NO3 -- N≤1.0mg/L, NO2 -- N≤0.5mg/L, phosphorus is 5-10mg/L.Pilot system such as Fig. 1 institutes
Show that AOA reactor dischargeable capacity 48L are divided into 8 lattice, per lattice dischargeable capacity 6L, reactor is made of lucite.
Concrete operations are as follows：
1) stable short distance nitration endogenous denitrification, sludge double back are realized by existing sludge dual reflux AOA systems first
Stream AOA systems have two sludge refluxes, wherein the first sludge reflux is to the first lattice anaerobism section, the second sludge reflux to the first lattice
Anoxic section, reflux ratio is 100%；System anaerobism volume：Aerobic volume：Anoxic volume=1:1:2；Aerobic zone dissolved oxygen concentration
For 1.5-3mg/L；System hydraulic detention time is 16h；100-300d of sludge age.
2) on this basis, half short distance nitration is realized by shortening the overall water conservancy residence time of reactor.Regulation reaction
The overall water conservancy residence time of device is 8-12h, when aerobic last water outlet keeps ammonia nitrogen concentration：Nitrite nitrogen concentration=1:1.32 it is left
The right side, and maintain more than 20d.I.e. it is believed that half short distance nitration reaches stabilization, then the filler for being enriched with anaerobic ammonia oxidizing bacteria is delivered
Anoxic section (2.5) in continuous stream AOA reactors (2), filler packing ratio is 30%-35%.The second sludge is simultaneously closed off to return
Stream.In this stage, municipal sewage, successively down through the anaerobism section of AOA reactors, aerobic section, anoxic section, is divided by water (flow) direction
Not carry out anaerobic phosphorus release, aerobic phosphorus absorption and half short distance nitration, Anammox reaction couple endogenous denitrification, by having in sewage
Machine thing, ammonia nitrogen and phosphorus ligands.
3) addition filler initial stage, because system is not yet stablized, by measuring the surplus of water ammonia nitrogen and nitrous, adjust aerobic
The concentration of area's dissolved oxygen, organic matter, total nitrogen when AOA reactors and total tp removal rate respectively reach 80%, 90%, 90% with
On, you can think that the short distance Anammoxs of continuous stream AOA half coupling endogenous denitrification system starts successfully.
4) after starting successfully, the COD of detection Inlet and outlet water, ammonia nitrogen, nitrite nitrogen, the concentration of nitrate nitrogen and phosphorus, analysis daily
System operation situation, to make corresponding micro-adjustment in time.Ensure the organic matter, total nitrogen and total tp removal rate of AOA reactors
80%, 90%, more than 90% is respectively reached,
Result of the test shows：After stable, municipal sewage is 45-55mg/L by COD after AOA reactors anaerobism section,
NH4 +- N is 24-45mg/L, NO3 -- N is 0.1-2.0mg/L, NO2 -- N is 0.1-0.5mg/L, and phosphorus is 10-17mg/L；By lacking
Phosphorus is 0.2-2mg/L after oxygen section；Water outlet COD is 40-50mg/L, NH4 +- N is 0-5mg/L, NO3 -- N is 0-2mg/L, NO2 -- N is
0-2mg/L, phosphorus is 0-0.4mg/L；Water outlet COD, NH4 +The technical indicator such as-N, TN, TP stably reaches country-level A discharges mark
It is accurate.
Claims (2)
1. realize the system that the short distance Anammoxs of continuous stream AOA half couple endogenous denitrification, it is characterised in that：Connect including order
Municipal sewage raw water box (1), AOA reactors (2), the sedimentation basin (3) connect；Municipal sewage raw water box (1) includes overflow pipe (1.1)
With blow-down pipe (1.2)；Municipal sewage raw water box (1) passes through water inlet pipe (2.1) and intake pump (2.1) and AOA reactors (2) phase
Even；AOA reactors (2) include 8 cell compartments, by water (flow) direction, are divided into two lattice anaerobism sections, two lattice aerobic sections, four lattice anoxic sections,
Each cell compartment by the water flow hole of water (flow) direction up and down staggeredly by being connected to prevent the generation of short flow phenomenon；Aerobic section (2.5) is adopted
Persistently it is aerated with air compressor machine (2.9) and aeration tube (2.8), aeration head (2.7)；Anoxic section (2.5) is placed with attachment Anammox
The filler (2.10) of bacterium；Every lattice of AOA reactors (2) are respectively equipped with agitator (2.6)；AOA reactors (2) pass through outlet pipe
(3.1) it is connected with sedimentation basin (3)；A part of sludge in sedimentation basin passes through mud return line (3.2) and sludge reflux pump (3.3)
The first lattice anaerobism section (2.3) of AOA reactors (2) is back to, excess sludge is discharged by mud discharging pipe (3.4).
2. the method for application device as claimed in claim 1, it is characterised in that comprise the following steps：
1) stable short distance nitration endogenous denitrification, sludge dual reflux AOA are realized by existing sludge dual reflux AOA systems first
System has two sludge refluxes, wherein the first sludge reflux is to the first lattice anaerobism section, the second sludge reflux to the first lattice anoxic
Section, reflux ratio is 100%；System anaerobism volume：Aerobic volume：Anoxic volume=1:1:2；Aerobic zone dissolved oxygen concentration is
1.5-3mg/L；System hydraulic detention time is 16h；100-300d of sludge age；
2)；The overall hydraulic detention time for adjusting AOA reactors is 8-12h, when aerobic last water outlet keeps ammonia nitrogen concentration：Nitrous state
Nitrogen concentration=1:1.32, and maintain more than 20d；Think that half short distance nitration reaches stabilization, then will be enriched with anaerobic ammonia oxidizing bacteria
Filler is invested in the anoxic section (2.5) in continuous stream AOA reactors (2), and filler packing ratio is 30%-35%；Simultaneously close off
Two sludge refluxes；
3) by measuring the surplus of water ammonia nitrogen and nitrous, the concentration 1.5-3mg/L of aerobic zone dissolved oxygen is adjusted, when AOA reactions
Organic matter, the total nitrogen of device respectively reach 80%, 90%, more than 90% with total tp removal rate, that is, think that the short distances of continuous stream AOA half are detested
Anaerobic ammonium oxidation coupling endogenous denitrification system starts successfully.
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| CN107381813A (en) * | 2017-08-31 | 2017-11-24 | 北京城市排水集团有限责任公司 | The device and method of sludge segment reflux strengthened anaerobic ammoxidation denitrification process |
| CN108101310A (en) * | 2017-12-29 | 2018-06-01 | 凯远环境研究院有限公司青岛分公司 | A kind of processing unit and method of heat-engine plant desulfurized denitration wastewater |
| CN109368792A (en) * | 2018-12-06 | 2019-02-22 | 北京工业大学 | The method and apparatus of sludge dual reflux AOA short distance nitration coupling Anammox and endogenous denitrification Treating Municipal Sewage |
| CN109455881A (en) * | 2018-12-05 | 2019-03-12 | 中铁第四勘察设计院集团有限公司 | A kind of segmented railway defecate collection sewage treatment process and system |
| CN109485152A (en) * | 2018-12-19 | 2019-03-19 | 北京工业大学 | A kind of apparatus and method of continuous flow municipal sewage short-cut denitrification part ANAMMOX advanced nitrogen dephosphorization |
| CN109626563A (en) * | 2018-12-21 | 2019-04-16 | 海南大学 | A kind of domestic sewage in rural areas deep denitrification method |
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