CN108862584A - A kind of device and method for inhibiting to realize continuous flow short distance nitration-anaerobic ammoxidation Treating Municipal Sewage based on azanol - Google Patents
A kind of device and method for inhibiting to realize continuous flow short distance nitration-anaerobic ammoxidation Treating Municipal Sewage based on azanol 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
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- 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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- 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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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2101/00—Nature of the contaminant
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- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
It is a kind of to inhibit to realize that the urban sewage treating device of continuous flow short distance nitration-anaerobic ammoxidation and method belong to sewage treatment field based on azanol.UCT technique is improved, device is made of raw water box, main reactor, sedimentation basin and azanol processing unit；Wherein main reactor is divided into six regions, is followed successively by anaerobic reactor, anoxic reacter, the first aerobic reactor, the first denitrification reactor, the second aerobic reactor, the second denitrification reactor.For continuous flow short distance nitration-anaerobic ammoxidation, inhibit the activity of NOB particularly important, and is difficult to obtain stable short distance effect only by real time monitoring and adjusting process parameter, and means are complex.This method is by setting azanol processing unit, using azanol to the selective depression of NOB, it is suppressed that the activity of part NOB lacks the strategy of aerobic alternate run in combination with main reaction pond, further suppresses the activity of NOB.This method is easy to operate, being capable of quick start and stable maintenance.
Description
Technical field
The present invention relates to it is a kind of using azanol and lack in aerobic alternately tactful double inhibition sewage nitrobacteria (NOB) to
The device and method for realizing continuous flow short distance nitration-anaerobic ammoxidation Treating Municipal Sewage, belong to sewage treatment field.
Background technique
Being constantly progressive and develop with society, people gradually recognize the importance of environmental protection.In recent years, China goes out
Platform and a series of policies and requirement for environmental protection, for water pollution, further strict regulations are issued
Detect frequency, Testing index, effluent quality and requirement up to standard.Not only energy consumption is high, investment is big for traditional biologic process for treating sewage,
Sludge output is high, and treatment effect is general, it is hard to reach new standard and requirement.
Short distance nitration technology and Anammox technology are to develop in recent years than faster Novel sewage biologic treating technique,
There are biggish application value and extensive development prospect.Short distance nitration technology refers to that under aerobic conditions, the ammonia nitrogen in sewage passes through
The effect of nitrite bacteria (AOB) is converted into nitrite nitrogen, and reaction stops at this time, does not continue to convert nitrite nitrogen to nitre state
Nitrogen.The technology has many advantages, such as, for example, save aeration quantity, energy saving, sludge output is few etc..Anammox technology refers to
Under anoxia condition, ammonia nitrogen present in sewage and nitrite nitrogen are converted to the process of nitrogen by anaerobic ammonia oxidizing bacteria simultaneously.Anaerobism
Ammoxidation technology has many advantages, such as to save carbon source, saves cost, sludge output less.Currently, scientific research personnel is usually both technologies
Combination, the typical son that arranges is exactly continuous flow short distance nitration-anaerobic ammoxidation technique.
Continuous flow short distance nitration-anaerobic ammoxidation technique combines short distance nitration technology and Anammox technology is respective
It is few not only to save carbon source, energy saving, sludge yield for advantage, and treatment effect is preferable, can reach increasingly strict water outlet
Standard.But there is also apparent difficult points for continuous flow short distance nitration-anaerobic ammoxidation technique, wherein most difficult two o'clock is
The realization of short distance nitration reaction and effective withholding of anaerobic ammonia oxidizing bacteria.Realize short distance nitration reaction is to inhibit to nitrify at all
The activity and growth of bacterium (NOB) make nitrite bacteria (AOB) dominant growth, and method commonplace at present has：(1) continue
Low-oxygen aeration；(2) higher reaction temperature is kept；(3) inhibited using FA and FNA etc..But these methods have certain office
It is sex-limited：(1) low dissolved oxygen can make reaction rate slack-off, and treatment effeciency is not high, be also easy to cause sludge bulking；(2) municipal sewage
Treatment plant's water is big, and heating strategy was both uneconomical or unrealistic；(3) studies have shown that FA and FNA inhibits adaptable.
According to pertinent literature, azanol has selects inhibition well, and certain density azanol can be very good to promote
The growth of nitrite bacteria (AOB), while inhibiting the activity of nitrobacteria (NOB), hinder its growth.Azanol is as nitre simultaneously
Change the intermediate product of reaction, can be utilized by good, new polluter will not be introduced, while cheap, economy is easily
?.Lacking aerobic alternating simultaneously is considered as a kind of effective inhibition active means of NOB, because after undergoing anoxic treatment, NOB
With lag period longer than AOB and convalescence, so that its growth in system is in a disadvantageous position, gradually eluriated, thus favorably
In the growth of AOB.This method uses azanol and lacks the means of aerobic alternately double inhibition NOB, then cooperates and add cyclic annular polyethylene
Filler effectively withholds anaerobic ammonia oxidizing bacteria, realizes well and stabilization maintains short distance nitration and Anammox reaction, save
Aeration quantity, has saved carbon source, has reduced processing cost, be the friendly process for meeting China's strategy of sustainable development, has
There are higher potential using value and practical significance.
Summary of the invention
The present invention is insufficient for carbon source existing for current municipal sewage plant, operating cost is higher, sludge yield is big etc.
Problem proposes a kind of continuous flow short distance nitration-anaerobic ammoxidation technique, realizes the denitrogenation dephosphorizing of municipal sewage, reduces fortune
Row cost, reduces sludge yield.
A kind of urban sewage treating device for inhibiting to realize continuous flow short distance nitration-anaerobic ammoxidation based on azanol, it is special
Sign is：Device used include raw water box (1), anaerobic reactor (2), anoxic reacter (3), the first aerobic reactor (4),
First denitrification reactor (5), the second aerobic reactor (6), the second denitrification reactor (7), sedimentation basin (8) and azanol processing unit
(9)；
Water inlet pipe (1.1) and overflow pipe (1.2) are set on the raw water box (1)；It is set on the anaerobic reactor (2)
Water inlet, water outlet and refluxing opening are set, wherein water inlet is connected by intake pump (10) with raw water box (1)；The anoxic is anti-
Answer and water inlet, water outlet, interior refluxing opening and exteenal reflux mouth be set on device (3), wherein in refluxing opening by interior reflux pump (11) and
The refluxing opening of anaerobic reactor (2) is connected；First aerobic reactor (4) and the second aerobic reactor (6) is provided with
Water inlet, water outlet, aeration head (16) and DO sensor (17), wherein aeration head (16) is connected with air pump (12)；Described
One denitrification reactor (5) and the second denitrification reactor (7) are provided with inlet and outlet, and inside is filled out using cyclic annular polyethylene
Material is filled；Sedimentation basin (8) setting water inlet, outlet pipe (8.1) and the sludge pipe, wherein water inlet and the second denitrogenation
The water outlet of reactor (7) is connected, and mud valve (8.2) and return valve (8.3) are arranged on sludge pipe (8.2)；At the azanol
Unit (9) setting water inlet, water outlet and chemicals dosing plant (9.1) are managed, wherein water inlet passes through the first external reflux pump (13) and heavy
The sludge pipe (8.2) in shallow lake pond is connected, and water outlet passes through the exteenal reflux mouth phase of the second external reflux pump (14) and anoxic reacter (3)
Even；The anaerobic reactor (2), anoxic reacter (3), the first aerobic reactor (4), the first denitrification reactor (5), second
Aerobic reactor (6), the second denitrification reactor (7) and azanol processing unit (9) are provided with blender (15) and sample tap.With
Silica gel hose connection is all made of between upper each reactor.
A method of inhibit to realize the municipal sewage treatment of continuous flow short distance nitration-anaerobic ammoxidation based on azanol,
It is characterized in that：
1) it is inoculated with startup stage.The returned sludge of municipal sewage plant's secondary settling tank is inoculated with into anaerobic reactor (2), is made
Sludge concentration reaches 3000~4000mg/L, inoculate hang up properly Anammox biomembrane polyethylene carrier it is anti-to the first denitrogenation
It answers in device (5) and the second denitrification reactor (7), packing ratio is 30~40%；；Sludge in sedimentation basin (8) outside sludge by returning
Stream pump (13,14) is back to anoxic reacter (3) according to 50~150% return sludge ratio, while the mud of anoxic reacter (3)
Aqueous mixtures are back to anaerobic reactor (2) according to 80~120% sludge internal reflux ratio；According to the sludge concentration in reactor
Sludge volume is adjusted, changes sludge age, sludge concentration is made to be stably maintained at 3000~4000mg/L；When adjusting practical hydraulic retention
Between, when sedimentation basin is discharged NH4 +-N<10mg/L, PO4 3-<0.5mg/L, TN<When 25mg/L, then the start completion of this technique；
2) the continuous operation stage.
Anoxic reacter (3)：Through azanol handle mixed liquor under the action of sludge external reflux pump with anaerobic reactor
Mixed liquor enters anoxic reacter (3) simultaneously, and external reflux ratio is 50%~150%.Heterotrophism is anti-under the stirring action of blender
The a small amount of nitrate nitrogen and nitrite nitrogen that nitrobacteria is carried returned sludge using organic matter remaining in sewage carry out denitrification
Reaction, while part denitrifying phosphorus removing bacteria is using nitrate nitrogen or nitrite nitrogen as electron acceptor, to be stored in cell under anaerobic condition
Intracorporal PHB is that electron donor completes denitrification dephosphorization reaction, realizes the synchronous removal of nitrogen phosphorus.
Anaerobic reactor (2)：Municipal sewage passes through the swabbing action of intake pump and the interior returned sludge of anoxic reacter (3)
Enter anaerobic reactor simultaneously, mixed under the action of blender, internal reflux ratio is 80%~120%.In anaerobic condition
Under, polyP bacteria largely absorbs organic matter biodegradable in raw water, and is stored in vivo in the form of internal carbon source PHB,
A large amount of dissolubility orthophosphates is discharged into water body simultaneously.
First aerobic reactor (4)：The muddy water mixed solution of anoxic reacter (3) is directly entered the first aerobic reactor (4).
Through being aerated, AOB is by the part NH in raw water under aerobic conditions4 +It is oxidized to NO2 -, bottom is provided for the reaction of subsequent Anammox
Object, polyP bacteria (including Denitrifying Phosphate Accumulating Organisms) is that aerobic phosphorus absorption reaction occurs for electron acceptor using oxygen, thus excessive consumption water
In dissolubility orthophosphates.The size of aeration quantity according to operating status and the water quality situation of Inlet and outlet water with spinner flowmeter into
Row is adjusted, and controlling the dissolved oxygen concentration in reactor is 0.5~1.5mg/L, while being controlled in the first aerobic reactor (4) water outlet
NH4 +Concentration is greater than NO2 -Concentration, if NH4 +Concentration is lower than NO2 -Concentration, then when suitably reducing the hydraulic retention of first segment aerobic zone
Between and aeration quantity.
First denitrification reactor (5)：It is anti-that the muddy water mixed solution water outlet of first aerobic reactor (4) is directly entered the first denitrogenation
Answer device (5).Under the action of blender, the anaerobic ammonia oxidizing bacteria of biofilm utilizes NH on cyclic annular polyethylene carrier4 +And NO2 -Occur
Anammox reacts autotrophy and carries out denitrogenation, while heterotrophic denitrifying Bacteria carries out anti-nitre using remaining carbon source a small amount of in mixed liquor
Change denitrogenation.It detects reactor and is discharged NO2 -Concentration, if also containing NO in water outlet2 -, then extend the waterpower of the first denitrification reactor (5)
Residence time.
Second aerobic reactor (6)：Function is mixed with the first aerobic reactor (4), the muddy water of the first denitrification reactor (5)
Liquid is directly entered the second aerobic reactor (6).Under the action of aeration, AOB is by remaining NH4 +Partial oxidation is NO2 -.Control
Dissolved oxygen concentration in reactor is 0.5~1mg/L, and controls the NH in the water outlet of second segment short distance nitration reactor4 +Concentration is big
In NO2 -Concentration, if NH4 +Concentration is lower than NO2 -Concentration then reduces the hydraulic detention time and aeration of the second aerobic reactor (6)
Amount.
Second denitrification reactor (7)：Function is the same as the first denitrification reactor (5).Under anoxic conditions, cyclic annular polyethylene carrier
On anaerobic ammonium oxidizing bacteria utilize remaining NH in raw water4 +And NO2 -Anammox reaction occurs, exists simultaneously a small amount of
Denitrification.It monitors reactor and is discharged NH4 +Concentration and NO2 -Concentration, if also containing NO in water outlet2 -, then it is anti-to extend the second denitrogenation
The hydraulic detention time of device (7) is answered, if also containing NH in water outlet4 +, then when extending the hydraulic retention of the second aerobic reactor (6)
Between.
Sedimentation basin (8)：The muddy water mixed solution of second denitrification reactor (7) flows directly into sedimentation basin (8) and carries out mud-water separation,
Supernatant is discharged through outlet pipe (8.1), and precipitating sludge a part is discharged as excess sludge, and a part is flowed into through sludge pump (13)
Azanol processing unit (9) carries out inhibition processing, and sludge external reflux ratio is controlled 80%~120%, according to mixed liquor in reactor
Sludge concentration adjust sludge discharge, so that sludge concentration is maintained 3000~4000mg/L.
Azanol processing unit (9)：The exteenal reflux sludge of sedimentation basin (8) flows into azanol processing unit (9) through sludge pump (13).
It opens chemicals dosing plant (9.1), inhibition processing is carried out to returned sludge using azanol, adding for azanol is adjusted according to inhibitory effect
Amount, makes concentration of the azanol in mixed liquor reach 2~5mg/L, and residence time of the exteenal reflux sludge in azanol processing unit (9) be
1~5h.
Improve treatment effect and effluent quality during continuous operation by adjusting hydraulic detention time (30~120min),
Effluent quality is set to reach NH4 +-N<5mg/L, PO4 3-<0.5mg/L, TN<15mg/L, and stablize and maintain.
The present invention is a kind of municipal sewage treatment dress for inhibiting to realize continuous flow short distance nitration-anaerobic ammoxidation based on azanol
It sets and method, is had the following advantages that compared with traditional cities sewage treatment plant biological denitrification phosphorous removal technique：
(1) using azanol and the growth that aerobic alternate run successfully inhibits NOB is lacked, it is effective using cyclic annular polyethylene carrier
Anaerobic ammonia oxidizing bacteria is withheld, to realize and stablize and maintain continuous flow short distance nitration-anaerobic ammoxidation technique；
(2) carbon source is saved, aeration quantity is reduced, to reduce operating cost, while reducing sludge yield, into one
Step reduces subsequent Treatment of Sludge cost；
(3) most of organic matter in raw water is mainly used for Denitrifying Phosphorus Removal, avoids the presence of more organic matter
Influence to subsequent anaerobic ammonia oxidizing bacteria, while a small amount of organic matter can provide carbon source for denitrifying bacteria, carry out denitrification
Denitrogenation enhances denitrification effect；
(4) outlet effect is stablized, and greenhouse gas emission is few.The present invention in view of autotrophic denitrification there is certain nitrate to produce
Object further decreases the total nitrogen in water body using denitrification dephosphorization, guarantees that water outlet total nitrogen is up to standard, effect stability；Short distance nitration-is detested
Anaerobic ammonium oxidation autotrophic denitrification is using inorganic carbon as carbon source, while without N in anaerobic ammonia oxidizing bacteria metabolic process2O is generated, therefore this technique
Greenhouse gas emission is few.
Detailed description of the invention
Fig. 1 is a kind of municipal sewage for inhibiting to realize continuous flow short distance nitration-anaerobic ammoxidation based on azanol in the present invention
The schematic diagram of processing unit, wherein 1 indicates that municipal sewage raw water box, 1.1 indicate that municipal sewage raw water box water inlet pipe, 1.2 indicate
Municipal sewage raw water box overflow pipe, 2 indicate that anaerobic reactor, 3 indicate that anoxic reacter, 4 indicate the first aerobic reactor, 5 tables
Show that the first denitrification reactor, 6 indicate that the second aerobic reactor, 7 indicate that the second denitrification reactor, 8 indicate that sedimentation basin, 8.1 indicate
Sedimentation basin outlet pipe, 8.2 indicate sludge from sedimentation tank valves, 8.3 indicate clarifier sludge return valves, 9 indicate azanol processing units,
9.1 indicate that azanol chemicals dosing plant, 10 indicate that intake pump, 11 indicate that interior reflux pump, 12 indicate that air blowers, 13 indicate the first exteenal reflux
Pump, 14 indicate that the second external reflux pump, 15 indicate that blender, 16 indicate that spinner flowmeter, 17 indicate that aeration head, 18 indicate DO measurement
Instrument, 19 indicate cyclic annular polyethylene carrier.
Specific embodiment
Below in conjunction with attached drawing, the present invention will be further described in detail：
It show a kind of municipal sewage for inhibiting to realize continuous flow short distance nitration-anaerobic ammoxidation based on azanol referring to Fig.1
Processing unit, including raw water box (1), anaerobic reactor (2), anoxic reacter (3), the first aerobic reactor (4), the first denitrogenation
Reactor (5), the second aerobic reactor (6), the second denitrification reactor (7), sedimentation basin (8) and azanol processing unit (9)；
Water inlet pipe (1.1) and overflow pipe (1.2) are set on the raw water box (1)；It is set on the anaerobic reactor (2)
Water inlet, water outlet and refluxing opening are set, wherein water inlet is connected by intake pump (10) with raw water box (1)；The anoxic is anti-
Answer and water inlet, water outlet, interior refluxing opening and exteenal reflux mouth be set on device (3), wherein in refluxing opening by interior reflux pump (11) and
The refluxing opening of anaerobic reactor (2) is connected；First aerobic reactor (4) and the second aerobic reactor (6) is provided with
Water inlet, water outlet, aeration head (16), spinner flowmeter (17) and DO sensor (18), wherein aeration head (16) and air pump
(12) it is connected；First denitrification reactor (5) and the second denitrification reactor (7) is provided with inlet and outlet, interior
Portion is filled using cyclic annular polyethylene carrier；Sedimentation basin (8) setting water inlet, outlet pipe (8.1) and the sludge pipe,
The water outlet of middle water inlet and the second denitrification reactor (7) is connected, and mud valve (8.2) and return valve are arranged on sludge pipe (8.2)
(8.3)；Described azanol processing unit (9) the setting water inlet, water outlet and chemicals dosing plant (9.1), wherein water inlet passes through the
One external reflux pump (13) is connected with the sludge pipe of sedimentation basin, and water outlet passes through the second external reflux pump (14) and anoxic reacter (3)
Exteenal reflux mouth be connected；The anaerobic reactor (2), anoxic reacter (3), the first aerobic reactor (4), the first denitrogenation are anti-
Device (5), the second aerobic reactor (6), the second denitrification reactor (7) and azanol processing unit (9) is answered to be provided with blender
(15) and sample tap.Silica gel hose connection is all made of between above-described each reactor.
Experimental rig shown in referring to Fig.1 realizes that municipal sewage short distance nitration-anaerobic ammoxidation is de- in accordance with the following steps
Nitrogen：
1) it is inoculated with startup stage.The returned sludge of municipal sewage plant's secondary settling tank is inoculated with into anaerobic reactor (2), is made
Sludge concentration reaches 3000~4000mg/L, inoculate hang up properly Anammox biomembrane polyethylene carrier it is anti-to the first denitrogenation
It answers in device (5) and the second denitrification reactor (7), packing ratio is 30~40%；；Sludge in sedimentation basin (8) outside sludge by returning
Stream pump (13,14) is back to anoxic reacter (3) according to 50~150% return sludge ratio, while the mud of anoxic reacter (3)
Aqueous mixtures are back to anaerobic reactor (2) according to 80~120% sludge internal reflux ratio；According to the sludge concentration in reactor
Sludge volume is adjusted, changes sludge age, sludge concentration is made to be stably maintained at 3000~4000mg/L；When adjusting practical hydraulic retention
Between, when sedimentation basin is discharged NH4 +-N<10mg/L, PO4 3-<0.5mg/L, TN<When 25mg/L, then the start completion of this technique；
2) the continuous operation stage.The chemicals dosing plant (9.1) of azanol processing unit (9) is opened, adding azanol is mixing it
Concentration in liquid reaches 2~5mg/L, and external returned sludge carries out inhibition processing, and external reflux ratio is 80%~120%, exteenal reflux
Sludge is 1~5h in the residence time of azanol processing unit (9)；Then mixed liquor flows into anoxic reacter (3) and carries out denitrification
It reacts, remaining nitrate nitrogen in returned sludge of degrading；Subsequent mixed liquor is back to anaerobic reaction by 50%~150% internal reflux ratio
Device (2) makes anaerobic reactor (2) to be in complete anaerobic state, at the same enter there are also sanitary sewage, polyP bacteria herein can be with
It carries out releasing phosphorus and stores internal carbon source well；Subsequent mixed liquor is again introduced into anoxic reacter (3), further occurrence release phosphorus and
Anti-nitration reaction, while reducing the COD in mixed liquor；Then mixed liquor enters the first aerobic reactor (4), and dissolved oxygen is controlled
In 0.5~1.5mg/L, the reaction of part short distance nitration is brought it about, is nitrous by a part of mineralized nitrogen, enters back into the first denitrogenation
Reactor (5), carries out denitrogenation under the double action based on anaerobic ammonia oxidizing bacteria, supplemented by denitrifying bacteria；Mixed liquor later
Into the second aerobic reactor (6), dissolved oxygen control is in 0.5~1mg/L, and remaining ammonia nitrogen continuation is partially converted into herein
Nitrous, the mixed liquor then containing ammonia nitrogen, nitrous and nitrate nitrogen enter the second denitrification reactor (7), in anaerobic ammonia oxidizing bacteria and instead
Denitrogenation under the synergy of nitrobacteria；Last mixed liquor flows into sedimentation basin (8) and carries out mud-water separation, supernatant outlet pipe
(8.1) it is discharged, sludge a part enters azanol processing unit (9) as exteenal reflux sludge and carries out inhibition processing, a part of conduct
Excess sludge discharge system.During continuous operation by adjusting hydraulic detention time (30~120min) come improve treatment effect and
Effluent quality makes effluent quality reach NH4 +-N<5mg/L, PO4 3-<0.5mg/L, TN<15mg/L, and stablize and maintain.
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.
Claims (2)
1. a kind of urban sewage treating device for inhibiting to realize continuous flow short distance nitration-anaerobic ammoxidation based on azanol, feature
It is：Including raw water box (1), anaerobic reactor (2), anoxic reacter (3), the first aerobic reactor (4), the first denitrification reaction
Device (5), the second aerobic reactor (6), the second denitrification reactor (7), sedimentation basin (8) and azanol processing unit (9)；
Water inlet pipe (1.1) and overflow pipe (1.2) are set on the raw water box (1)；Be arranged on the anaerobic reactor (2) into
The mouth of a river, water outlet and refluxing opening, wherein water inlet is connected by intake pump (10) with raw water box (1)；The anoxic reacter
(3) water inlet, water outlet, interior refluxing opening and exteenal reflux mouth are set on, wherein interior refluxing opening passes through interior reflux pump (11) and anaerobism
The refluxing opening of reactor (2) is connected；First aerobic reactor (4) and the second aerobic reactor (6) is provided with into water
Mouth, water outlet, aeration head (16) and DO sensor (17), wherein aeration head (16) is connected with air pump (12)；Described first is de-
Analysis (5) and the second denitrification reactor (7) are provided with inlet and outlet, inside using cyclic annular polyethylene carrier into
Row filling；Water inlet, outlet pipe (8.1) and sludge pipe is arranged in the sedimentation basin (8), wherein water inlet and the second denitrification reaction
The water outlet of device (7) is connected, and mud valve (8.2) and return valve (8.3) are arranged on sludge pipe (8.2)；The azanol handles single
First (9) setting water inlet, water outlet and chemicals dosing plant (9.1), wherein water inlet passes through the first external reflux pump (13) and sedimentation basin
Sludge pipe (8.2) be connected, water outlet is connected by the second external reflux pump (14) with the exteenal reflux mouth of anoxic reacter (3)；Institute
It is the anaerobic reactor (2) stated, anoxic reacter (3), the first aerobic reactor (4), the first denitrification reactor (5), second aerobic
Reactor (6), the second denitrification reactor (7) and azanol processing unit (9) are provided with blender (15) and sample tap.
2. the method for application claim 1 described device, it is characterised in that：
1) it is inoculated with startup stage
The returned sludge of municipal sewage plant's secondary settling tank is inoculated with into anaerobic reactor (2), make sludge concentration reach 3000~
4000mg/L is inoculated and is hung up properly the polyethylene carrier of Anammox biomembrane to the first denitrification reactor (5) and the second denitrogenation
In reactor (7), packing ratio is 30~40%；Sludge in sedimentation basin (8) is by sludge external reflux pump according to 50~150%
Return sludge ratio is back to anoxic reacter (3), while the mud mixture of anoxic reacter (3) is according to 80~120% dirt
Mud internal reflux ratio is back to anaerobic reactor (2)；Sludge volume is adjusted according to the sludge concentration in reactor, changes sludge age, makes
Sludge concentration is stably maintained at 3000~4000mg/L；When sedimentation basin is discharged NH4 +-N<10mg/L, PO4 3-<0.5mg/L, TN<
When 25mg/L, then start completion；
2) the continuous operation stage
Open the chemicals dosing plant (9.1) of azanol processing unit (9), the concentration that adding azanol makes it in mixed liquor reaches 2~
5mg/L, external returned sludge carry out inhibition processing, and external reflux ratio is 80%~120%, and exteenal reflux sludge is in azanol processing unit
(9) residence time is 1~5h；Then mixed liquor flows into anoxic reacter (3) and carries out anti-nitration reaction, in returned sludge of degrading
Remaining nitrate nitrogen；Subsequent mixed liquor is back to anaerobic reactor (2) by 50%~150% internal reflux ratio, makes anaerobic reactor
(2) the also sanitary sewage for being in complete anaerobic state, while entering, polyP bacteria carry out releasing phosphorus herein and store interior carbon
Source；Subsequent mixed liquor is again introduced into anoxic reacter (3), and further occurrence releases phosphorus and anti-nitration reaction, while reducing mixed liquor
In COD；Then mixed liquor enters the first aerobic reactor (4), and dissolved oxygen is controlled in 0.5~1.5mg/L, portion is brought it about
Divide short distance nitration reaction, is nitrous by a part of mineralized nitrogen, the first denitrification reactor (5) is entered back into, with Anammox
Denitrogenation is carried out under double action based on bacterium, supplemented by denitrifying bacteria；Mixed liquor enters the second aerobic reactor (6) later, molten
Oxygen control is solved in 0.5~1mg/L, remaining ammonia nitrogen continuation is partially converted into nitrous herein, then containing ammonia nitrogen, nitrous and
The mixed liquor of nitrate nitrogen enters the second denitrification reactor (7), the denitrogenation under the synergy of anaerobic ammonia oxidizing bacteria and denitrifying bacteria；
Last mixed liquor flows into sedimentation basin (8) and carries out mud-water separation, supernatant outlet pipe (8.1) discharge, and sludge a part is returned as outer
Stream sludge enters azanol processing unit (9) and carries out inhibition processing, and a part is used as excess sludge discharge system；During continuous operation
By adjusting hydraulic detention time within the scope of 30~120min, effluent quality is made to reach NH4 +-N<5mg/L, PO4 3-<0.5mg/
L, TN<15mg/L, and stablize and maintain.
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| CN112850894A (en) * | 2021-01-28 | 2021-05-28 | 北京坦思环保科技有限公司 | Device and method for advanced denitrification of industrial wastewater through anaerobic ammonia oxidation |
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| CN113697954A (en) * | 2021-08-12 | 2021-11-26 | 北京工业大学 | Device and method for realizing short-cut denitrification dephosphorization coupling anaerobic ammonia oxidation deep denitrification through side flow reactor |
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