CN107188307A - A kind of Integral waste water nitrogen rejection facility and a kind of method of denitrogenation of waste water - Google Patents
A kind of Integral waste water nitrogen rejection facility and a kind of method of denitrogenation of waste water Download PDFInfo
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- CN107188307A CN107188307A CN201710528276.0A CN201710528276A CN107188307A CN 107188307 A CN107188307 A CN 107188307A CN 201710528276 A CN201710528276 A CN 201710528276A CN 107188307 A CN107188307 A CN 107188307A
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1263—Sequencing batch reactors [SBR]
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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
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention provides a kind of Integral waste water nitrogen rejection facility and a kind of method of denitrogenation of waste water.The device simple structure that the present invention is provided, stability and restorative good.The present invention makes reactor body using nitrobacteria and the cotton-shaped anaerobic ammonium oxidation sludge of low activity, by way of finite concentration azanol and/or hydrazine are added long-term intermittent, optionally suppress growth and the activity of nitrobacteria, while promoting the activity of ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria；Reactor uses the method for operation of sequencing batch reactor, dilution to being intake containing ammonia nitrogen in high density is realized than by way of adjusting draining, make it that substrate concentration is in suitable scope in reactor, the suppression to short distance nitration and Anammox is not caused, improve the phenomenon of Nitrate Accumulation, reactor denitrification effect is recovered rapidly.
Description
Technical field
Taken off the present invention relates to technical field of waste water processing, more particularly to a kind of Integral waste water nitrogen rejection facility and a kind of waste water
The method of nitrogen.
Background technology
Nitrate pollution can cause the eutrophication of water body, and with China's urbanization and it is industrialized develop rapidly, this is asked
Topic is increasingly serious and has triggered multiple PE security incident.Therefore, country has enacted and enforced new dirt successively in recent years
Water discharge standard, wherein being improved particularly the emission request of ammonia nitrogen, and is defined to water outlet total nitrogen first.Meanwhile, ammonia nitrogen
Become overall control index new in country's " 12 planning ".However, China is also largely existed such as anaerobic digestion at present
The reluctant problem of the industrial wastewater such as supernatant, photoelectricity waste water, this kind of waste water is due to the spy with high ammonia nitrogen, low ratio of carbon to ammonium
Point, total nitrogen removes particularly difficult.
Carried out more than traditional denitrogenation technology using nitrification-denitrification technological means, the technology is due to needing a large amount of oxygen to use
It is used for denitrification in nitrification, a large amount of organic carbon sources, in the case where handling high ammonia nitrogen, low ratio of carbon to ammonium waste water particularly not
It is economical and difficult.At present, study hotspot starts to turn to the denitrification process based on Anammox in the world.Anaerobic ammonia oxidizing bacteria is
A kind of spherical bacterium of Gram-negative, its by the use of ammonia nitrogen as electron donor, nitrite anions as electron acceptor, by nitrogen it
Between redox reaction directly generate nitrogen, realize the saving of the energy and carbon source.However, Anammox bacteria growing particularly delays
Slowly, it is necessary to be grown in the reactor that ability is withheld compared with Johnson ＆ Johnson's thing.In engineer applied, nitrogen is main in actual waste water
Form is ammonia nitrogen, therefore, and anaerobic ammonium oxidation process needs to couple progress, anaerobic ammonium oxidation process and nitrosation with nitrosation process
The coupling of process is broadly divided into two ways：One kind is connected using two reactors, both be substantially carried out respectively nitrosation with
Anammox, it is another, it is nitrosation is carried out with Anammox in same reactor, referred to as integral type denitrogenation.
And integral type denitrogenation is few due to its structures quantity, Engineering Operation is convenient for relative to splitization design, simultaneously because
Without single nitrosation reactor, thus in denitrification process without nitrite accumulation the problem of, improve safety in operation, and subtract
Few greenhouse gases N2O discharge.But, it is necessary to which the ammonia oxidation bacteria in selective cultivation reactor is with detesting during operation integrated reactor
Anaerobic ammonium oxidation bacterium, while suppressing nitrobacteria；On the other hand, in actual applications, unstable flooded condition is regular to make
Fluctuation into reactor, so as to suppress to reactor formation, therefore, the recovery capability of reactor is also critically important.
In summary, the denitrification reactor based on existing Anammox respectively has advantage, but is also respectively weak；For reality
Existing anaerobic ammonia oxidation process under high load capacity, high influent concentration, it is steady in a long-term run and with stronger recovery capability, still need into
The improvement of one step.
The content of the invention
It is an object of the invention to provide a kind of Integral waste water nitrogen rejection facility and a kind of method of denitrogenation of waste water, the present invention
The characteristics of Integral waste water nitrogen rejection facility of offer has high load capacity, high influent concentration, long-time stability and good recovery capability.
In order to realize foregoing invention purpose, the present invention provides following technical scheme：
The invention provides a kind of Integral waste water nitrogen rejection facility, comprising reactor, water feed apparatus, intake pump, go out water pump,
Reflux pump, water bath device, aeration pump, agitating device and water-bath chuck；
Wherein, the water feed apparatus is connected by intake pump with reactor lower part water inlet；
The agitating device is arranged inside reactor；
It is described go out water pump connected with the middle part delivery port of reactor；
The water-bath chuck encapsulation reaction device side, the outlet of the water-bath chuck is connected with water bath device, described
The entrance of water-bath chuck is connected by reflux pump with water bath device；
The aeration pump is connected to inside reactor bottom.
It is preferred that, the intake pump, go out water pump, aeration pump and agitating device controller is independently connected.
It is preferred that, the reactor top is provided with overfall.
Carried out present invention also offers one kind using Integral waste water nitrogen rejection facility described in above-mentioned technical proposal any one
The method of denitrogenation of waste water, is comprised the following steps：
(1) nitrifying sludge, anaerobic ammonium oxidation sludge and filler are added in the reactor；
(2) start aeration pump and agitating device, intake by intake pump into reactor；
(3) after water inlet end, the continuous service of aeration pump and agitating device is kept, is reacted；
(4) after completion of the reaction, aeration pump and agitating device are out of service so that sludge is precipitated, and supernatant is by water outlet
Pump is discharged；
(5) repeat step (2)~(4), continue to run with the progress denitrogenation of waste water processing of several cycles；
It is intermittent that azanol and/or hydrazine are added into reactor in above-mentioned denitrogenation of waste water processing procedure.
It is preferred that, the azanol and/or the frequency of hydrazine of being added into reactor is 3~5 days/time；
The azanol and/or the amount of hydrazine added every time is 1~5mg N/L.
It is preferred that, the inoculum concentration of the nitrifying sludge and anaerobic ammonium oxidation sludge independently is >=6000mg VSS/L.
It is preferred that, the volume packing ratio of the filler is 40~60%.
It is preferred that, in the denitrogenation of waste water processing procedure, water bath device and reflux pump continuous service, it is ensured that the fortune of reactor
Trip temperature.
It is preferred that, the concentration of the dissolved oxygen of inside reactor is 0.1~1mg/L in the denitrogenation of waste water processing procedure, instead
The running temperature for answering device is 30~35 DEG C.
The invention provides a kind of Integral waste water nitrogen rejection facility, comprising reactor, water feed apparatus, intake pump, go out water pump,
Reflux pump, water bath device, aeration pump, agitating device and water-bath chuck；Wherein, the water feed apparatus passes through intake pump and reactor
Lower water inlet is connected；The agitating device is arranged inside reactor；It is described go out water pump and reactor middle part water outlet
Mouth is connected；The water-bath chuck encapsulation reaction device side, the outlet of the water-bath chuck is connected with water bath device, institute
The entrance for stating water-bath chuck is connected by reflux pump with water bath device；The aeration pump is connected to inside reactor bottom.
The device simple structure that the present invention is provided, stability and restorative good.Overcome in current integration denitrification reactor and exist
Under longtime running, nitrobacteria gradually occupies advantage in the competition with anaerobic ammonia oxidizing bacteria, causes Nitrate Accumulation, with
And the problem of shock resistance and stability are poor, recovery capability is weak, its denitrifying load is higher, longtime running stability is strong, by strong
Still there is very strong recovery capability, so as to realize that economical and efficient removes total nitrogen after strong suppression.
Present invention also offers a kind of method of denitrogenation of waste water.The present invention makes reactor body use nitrobacteria and low work
Property cotton-shaped anaerobic ammonium oxidation sludge, by way of azanol and/or hydrazine are added long-term intermittent, optionally suppress nitrification
The growth of bacterium and activity, while promoting the activity of ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria；Reactor uses sequencing batch reactor
The method of operation, dilution to being intake containing ammonia nitrogen in high density is realized than by way of adjusting draining, to cause ammonia in reactor
Nitrogen concentration causes the suppression to short distance nitration and Anammox in suitable scope, or not improves the phenomenon of Nitrate Accumulation,
Reactor denitrification effect is set to recover rapidly.
Brief description of the drawings
Fig. 1 is the structural representation of integral type denitrogenation of waste water device；
Wherein, 1- water feed apparatus, 2- intake pumps, 3- reactors, 4- goes out water pump, 5- reflux pumps, 6- water bath devices, 7- aerations
Pump, 8- mixers, 9- agitating paddles, 10- fillers, 11- water-bath chucks.
Embodiment
The invention provides a kind of Integral waste water nitrogen rejection facility, comprising reactor, water feed apparatus, intake pump, go out water pump,
Reflux pump, water bath device, aeration pump, agitating device and water-bath chuck；
Wherein, the water feed apparatus is connected by intake pump with reactor lower part water inlet；
The agitating device is arranged inside reactor；
It is described go out water pump connected with the middle part delivery port of reactor；
The water-bath chuck encapsulation reaction device side, the outlet of the water-bath chuck is connected with water bath device, described
The entrance of water-bath chuck is connected by reflux pump with water bath device；
The aeration pump is connected to inside reactor bottom.
The structural representation of the Integral waste water nitrogen rejection facility provided as the specific embodiment of the present invention, the present invention
As shown in Figure 1.As shown in Figure 1, the Integral waste water nitrogen rejection facility comprising reactor, water feed apparatus, intake pump, go out water pump,
Reflux pump, water bath device, aeration pump, agitating device and water-bath chuck；Wherein, the water feed apparatus passes through intake pump and reactor
Lower water inlet is connected；The agitating device includes mixer and agitating paddle, and the agitating paddle is arranged inside reactor；
It is described go out water pump connected with the middle part delivery port of reactor；The water-bath chuck encapsulation reaction device side, the water-bath folder
The outlet of set is connected with water bath device, and the entrance of the water-bath chuck is connected by reflux pump with water bath device；Institute
State aeration pump and be connected to inside reactor bottom.
The present invention to the reactor, water feed apparatus, intake pump, go out water pump, reflux pump, water bath device, aeration pump, stirring
The parameters such as the concrete model and structure of device and water-bath chuck do not have any particular/special requirement, using wastewater treatment equipment field skill
Wastewater treatment equipment known to art personnel is with each part.
The present invention does not have any particular/special requirement to the draw ratio of the reactor, in the specific embodiment of the invention, institute
The draw ratio for stating reactor is preferably 4~8, and more preferably 5~6.
As a preferred embodiment of the present invention, the intake pump, go out water pump, aeration pump and agitating device and independently connect
Connect controller, the controller carries out auto-control to intake pump, the operation for going out water pump, aeration pump and agitating device.
As a preferred embodiment of the present invention, the reactor top is provided with overfall.
Carried out present invention also offers one kind using Integral waste water nitrogen rejection facility described in above-mentioned technical proposal any one
The method of denitrogenation of waste water, is comprised the following steps：
(1) nitrifying sludge, anaerobic ammonium oxidation sludge and filler are added in the reactor；
(2) start aeration pump and agitating device, intake by intake pump into reactor；
(3) after water inlet end, the continuous service of aeration pump and agitating device is kept, is reacted；
(4) after completion of the reaction, aeration pump and agitating device are out of service so that sludge is precipitated, and supernatant is by water outlet
Pump is discharged；
(5) repeat step (2)~(4), continue to run with the progress denitrogenation of waste water processing of several cycles；
It is intermittent that azanol and/or hydrazine are added into reactor in above-mentioned denitrogenation of waste water processing procedure.
The present invention adds nitrifying sludge, anaerobic ammonium oxidation sludge and filler in the reactor first.The present invention is to the nitre
Changing the addition sequence of sludge, anaerobic ammonium oxidation sludge and filler does not have any particular/special requirement, and three can be according to arbitrary suitable
Sequence is added.
In the present invention, advantage class is Nitrosomonas in the nitrifying sludge, in the anaerobic ammonium oxidation sludge
Advantage class is Candidatus Kuenenia.The present invention does not have to the source of the nitrifying sludge and anaerobic ammonium oxidation sludge
Any particular/special requirement, be using use in waste water treatment nitrifying sludge well-known to those skilled in the art and anaerobic ammonium oxidation sludge
Can.
In the present invention, the inoculum concentration of the nitrifying sludge and anaerobic ammonium oxidation sludge is preferably independently >=6000mg
VSS/L, more preferably >=7000mg VSS/L, are most preferably >=8000mg VSS/L.It is described in the specific embodiment of the invention
The inoculum concentration of nitrifying sludge and anaerobic ammonium oxidation sludge is preferably independently 6000~10000mg VSS/L, more preferably 7000
~9000mg VSS/L, most preferably 8000mg VSS/L.
In the present invention, the filler is preferably plastic filler.The present invention does not have to the species of the plastic filler and source
There is any particular/special requirement, the speed filler commonly used using those skilled in the art.In the specific embodiment of the invention,
The filler is preferably column, high 1cm, diameter 1cm.In the present invention, the volume packing ratio of the filler be preferably 40~
60%, more preferably 45~55%.Filler selected by the present invention, biofilm works well.
The present invention is after addition finishes the nitrifying sludge, anaerobic ammonium oxidation sludge and filler, the initial pH in reactor
Value is preferably 7~8, more preferably 7.5.
Add in the reactor after nitrifying sludge, anaerobic ammonium oxidation sludge and filler, the present invention starts aeration pump and stirring
Device, is intake by intake pump into reactor.The present invention is preferably in startup aeration pump and after agitating device certain time, then open
Intake pump is opened to intake into reactor, to strengthen mass transfer, while so that water inlet in matrix be consumed, make in reactor
Ammonia nitrogen does not produce suppression to ammonia oxidizing bacteria and anaerobic ammonium oxidizing bacteria；The certain time is preferably 10~20s, more preferably
15~16s.
In the present invention, the aeration quantity preferably using control the concentration of dissolved oxygen in the denitrogenation of waste water processing procedure as
0.1~1mg/L is defined, more preferably 0.2~0.8mg/L, most preferably 0.4~0.6mg/L.
In the present invention, the stir speed (S.S.) of the agitating device is preferably 100~140rpm, more preferably 110~
130rpm, most preferably 120rpm.
In the present invention, the time hardness of water inlet is the water inlet of the water inlet in 1~3min, 1~3min in each cycle
Amount is preferably 0.5~1L, more preferably 0.6~0.8L.In the present invention, the water inlet can be specifically the ammonia of any kind
Nitrogen waste water.
In the present invention, in initial start stage, NH in the influent quality4Cl concentration it is preferred≤200mgN/L, with
Reactor operation conditions optimizes, NH in the influent quality4Cl concentration it is preferred >=250mgN/L, when reactor reaches stabilization
During operation, NH in the influent quality4Cl concentration it is preferred >=300mgN/L, although note that and be usually no more than 500mgN/L.
In the specific embodiment of the invention, NH in the influent quality4Cl concentration is preferably 200~330mgN/L, more preferably 250~
300mgN/L；KH2PO4Concentration be preferably 10~45mgP/L, more preferably 20~30mgP/L；CaCl2Concentration be preferably
150~320mg/L, more preferably 200~280mg/L；MgSO4·7H2O concentration is preferably 100~220mg/L, more preferably
180~200mg/L；NaHCO3Concentration be preferably 15~20mg/L, more preferably 16~18g/L；Trace element solution I's is dense
Degree is preferably 0.5mg/L；Trace element solution II concentration is preferably 1.5~2.5mg/L, more preferably 2mg/L.
In the specific embodiment of the invention, the composition of the trace element solution I is (g/L)：FeSO47.5~8.5,
EDTA 5；Trace element solution II composition is (g/L)：EDTA 15, CuSO4·5H2O 0.22~0.24, ZnSO4·7H2O
0.43, NiCl2·6H2O 0.18~0.19, NaSeO4·10H2O 0.21, NaMoO4·2H2O 0.22, H3BO40.014,
MnCl2·4H2O 0.99, zinc chloride 0.26g/L.
After water inlet end, the present invention keeps the continuous service of aeration pump and agitating device, is reacted.In the present invention,
The specific bacterium in nitrifying sludge and anaerobic ammonium oxidation sludge of reaction absorbs the biology of the solutes such as the ammonia nitrogen in waste water
Process.In the present invention, the reaction time of the stage of reaction is preferably 30~120min in each cycle, in the reactor start-up stage
Preferably 90~120min, as reactor operation conditions optimizes, the reaction time is preferably 50~80min, when reactor reaches
During stable operation, the reaction time is preferably 30~40min.
After completion of the reaction, the present invention keeps aeration pump and agitating device out of service so that sludge is precipitated, supernatant
By going out water pump discharge.In the present invention, the delivery ratio of the water outlet is preferably 10~30%, and more preferably 15~25%, it is optimal
Elect 20% as.The present invention is by controlling draining than regulating and controlling come the concentration to ammonia nitrogen matrix in reactor, row of the present invention
Water ratio can control inside reactor ammonia nitrogen concentration to be 100~120mg/L, preferably 105~115mg/L.
After the draining terminates, repeat step (2)~(4) of the present invention continue to run with several cycles progress waste water
Denitrogenation processing.In the present invention, each cycle includes fill phase, the stage of reaction, precipitate phase and water outlet stage.
In above-mentioned denitrogenation of waste water processing procedure, the present invention is intermittent to add azanol and/or hydrazine into reactor.
In the present invention, the azanol and/or the frequency of hydrazine of being added into reactor is preferably 3~5 days 1 time, more preferably 4 days 1 time.
In the present invention, specifically refer to every in one day after 3~5 days, in each cycle for described 3~5 days 1 time
Azanol and/or hydrazine are added in the water inlet of fill phase；Specifically such as, when the frequency is 4 days 1 time, every four days
The rhythmic fill phase of institute of the 5th day afterwards adds azanol and/or hydrazine into water inlet.
In the present invention, the azanol and/or the amount of hydrazine added every time be preferably 1~5mg N/L (with stereometer of intaking,
Namely the concentration of azanol and/or hydrazine in water inlet), more preferably 2~4mg N/L, most preferably 3mgN/L.
The present invention adds azanol and/or hydrazine since reactor start-up to integral type denitrification reactor intermittent,
Promotion nitrosation and Anammox can be reached, simultaneously selectively suppresses nitrification, so as to be conducive to the fast of reactor
Speed starts and operation steady in a long-term.
In the denitrogenation of waste water processing procedure, water bath device and reflux pump continuous service, to ensure the operation of reactor
Temperature.In the present invention, the running temperature of the water bath device is preferably 30~35 DEG C, more preferably 31~34 DEG C, most preferably
For 32~33 DEG C.
A kind of Integral waste water nitrogen rejection facility provided with reference to embodiment the present invention and a kind of side of denitrogenation of waste water
Method is described in detail, but they can not be interpreted as limiting the scope of the present invention.
Embodiment 1
Water inlet composition be：NH4Cl (concentration 200mgN/L), KH2PO4(concentration 45mg P/L), CaCl2(concentration 150mg/
L), MgSO4·7H2O (concentration 100mg/L), NaHCO3(concentration 15g/L), trace element solution I 1mL/L, trace element solution
II 0.5mL/L.Micro- I includes ferrous sulfate 8.5g/L and EDETATE SODIUM salt 5g/L.Micro- II includes EDETATE SODIUM salt
15g/L, manganese chloride 0.99g/L, copper sulphate 0.24g/L, zinc chloride 0.26g/L, NaSeO4·10H2O 0.21, NaMoO4·
2H2O 0.22, H3BO40.014 and nickel chloride 0.18g/L.
Aeration pump and mixing plant are first opened before water inlet, water inlet is reacted into reactor 3 from below.In course of reaction
In, aeration pump 7 is persistently aerated, and is that dissolved oxygen (0.1~1mg/L) is provided in reactor, mixer 8 (120rpm) is constantly stirred
Mix to strengthen mass transfer.
After completion of the reaction, aeration pump 7 is acted with the stopping of mixer 8 causes sludge settling, and supernatant is discharged via drainpipe
To draining bucket, start next cycle.
Water-bath chuck is set, and the water inside water-bath chuck is discharged into water-bath 6, via the pump again again of reflux pump 5 in reactor 3
Backwater bath chuck formation water-bath circulation, temperature conditionss (32 DEG C) are provided for the reaction environment in reactor 3.
In the process of running, while additional azanol, is dissolved in into water, add frequency for 3~5 days once, add
Concentration is 2mg N/L.By adding azanol, reactor 3 was after inoculation nitrifying sludge and cotton-shaped anaerobic ammonium oxidation sludge, through 13 days
It can start and reach 1.02kgN/ (m3D) total nitrogen elimination capacity；Occur operation to by high concentration dissolving oxygen inhibition and lose
The phenomenon of nitrate excess accumulation in azanol, water outlet is added in steady integral reactor to be improved rapidly, and after operation in 40 days,
The total nitrogen elimination capacity of reactor is by 0.88kgN/ (m3D) 1.69kgN/ (m are risen to3D), nitrogen removal rate is by 69.5%
Rise to 85.5%.Oxyammonia be to NOB inhibitory action it is reversible (stop addition azanol after 7 days water outlet nitrate start occur
Excess accumulation).
In the present invention, three phases are classified approximately into the reactor of the periodic duty：
When first stage is just starts reactor, 0.1, water outlet 1.2~5.0mg/L of ammonia nitrogen concentration, nitrite nitrogen are compared in draining
2~3.0mg/L of concentration, 1.0~4.2mg/L of nitrate concentration, nitrogen removal rate are 72~84%；
When second stage is that reactor runs gradually ripe, draining ratio reaches 0.2, water outlet ammonia nitrogen concentration 1.2~
7.5mg/L, nitrous 1.2~8.0mg/L of nitrogen concentration, 5.0~20.0mg/L of nitrate concentration, nitrogen removal rate is 83~86%；
Nitrite nitrogen concentration is low in water outlet simultaneously, and Nitrate Accumulation ratio is controlled near 0.12~0.15, shows that NOB activity is relatively low；
Three phases are reactor operation when reaching optimum state, and draining ratio reaches 0.3, water outlet ammonia nitrogen concentration 0~
4.0mg/L, nitrous 0.5~3.6mg/L of nitrogen concentration, 10.0~13.0mg/L of nitrate concentration, nitrogen removal rate is 87~89%；
Nitrite nitrogen concentration is low in water outlet simultaneously, and Nitrate Accumulation ratio is controlled 0.11, shows that NOB activity is low.
As seen from the above embodiment, the invention provides a kind of Integral waste water nitrogen rejection facility and a kind of side of denitrogenation of waste water
Method.The device simple structure that the present invention is provided, stability and restorative good.The present invention makes reactor body use nitrobacteria
With the cotton-shaped anaerobic ammonium oxidation sludge of low activity, by way of finite concentration azanol and/or hydrazine are added long-term intermittent, choosing
Suppress to selecting property growth and the activity of nitrobacteria, while promoting the activity of ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria；Reactor is adopted
With the method for operation of sequencing batch reactor, dilution to being intake containing ammonia nitrogen in high density is realized than by way of adjusting draining, with
So that substrate concentration causes the suppression to short distance nitration and Anammox in suitable scope, not in reactor, improve nitre
The phenomenon of hydrochlorate accumulation, makes reactor denitrification effect recover rapidly.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of Integral waste water nitrogen rejection facility, comprising reactor, water feed apparatus, intake pump, go out water pump, reflux pump, water-bath dress
Put, aeration pump, agitating device and water-bath chuck；
Wherein, the water feed apparatus is connected by intake pump with reactor lower part water inlet；
The agitating device is arranged inside reactor；
It is described go out water pump connected with the middle part delivery port of reactor；
The water-bath chuck encapsulation reaction device side, the outlet of the water-bath chuck is connected with water bath device, the water-bath
The entrance of chuck is connected by reflux pump with water bath device；
The aeration pump is connected to inside reactor bottom.
2. Integral waste water nitrogen rejection facility according to claim 1, it is characterised in that the intake pump, go out water pump, aeration
Controller is independently connected in pump and agitating device.
3. Integral waste water nitrogen rejection facility according to claim 1, it is characterised in that the reactor top is provided with excessive
Head piece.
4. a kind of usage right requires the method that Integral waste water nitrogen rejection facility described in 1~3 any one carries out denitrogenation of waste water, bag
Containing following steps：
(1) nitrifying sludge, anaerobic ammonium oxidation sludge and filler are added in the reactor；
(2) start aeration pump and agitating device, intake by intake pump into reactor；
(3) after water inlet end, the continuous service of aeration pump and agitating device is kept, is reacted；
(4) after completion of the reaction, aeration pump and agitating device are out of service so that sludge is precipitated, and supernatant is arranged by going out water pump
Go out；
(5) repeat step (2)~(4), continue to run with the progress denitrogenation of waste water processing of several cycles；
It is intermittent that azanol and/or hydrazine are added into reactor in above-mentioned denitrogenation of waste water processing procedure.
5. the method for denitrogenation of waste water according to claim 4, it is characterised in that it is described added into reactor azanol and/
Or the frequency of hydrazine is 3~5 days/time；
The azanol and/or the amount of hydrazine added every time is 1~5mgN/L.
6. the method for denitrogenation of waste water according to claim 4, it is characterised in that the nitrifying sludge and Anammox are dirty
The inoculum concentration of mud independently is >=6000mgVSS/L.
7. the method for denitrogenation of waste water according to claim 4, it is characterised in that the volume packing ratio of the filler is 40~
60%.
8. the method for denitrogenation of waste water according to claim 4, it is characterised in that in the denitrogenation of waste water processing procedure, water
Bath apparatus and reflux pump continuous service, it is ensured that the running temperature of reactor.
9. the method for denitrogenation of waste water according to claim 4, it is characterised in that reacted in the denitrogenation of waste water processing procedure
The concentration of dissolved oxygen inside device is 0.1~1mg/L, and the running temperature of reactor is 30~35 DEG C.
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