CN106348444B - A kind of quick start method of CANON denitrification process - Google Patents
A kind of quick start method of CANON denitrification process 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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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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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- 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
Full autotrophic realizes short distance nitration and Anammox by nitrite denitrification technique (CANON) and realizes denitrification functions in a reactor, reduces the domestication increment time of thallus.Using the fast start up of reactor CANON technique of fixed composite filling and three phase separator development, CANON technique is directly initiated by 25d continuous operation, realizes that water inlet total nitrogen (TN) load is 0.2Kg ﹒ m‑3﹒ d‑1, total nitrogen elimination capacity be greater than 0.18Kg ﹒ m‑3﹒ d‑1, ammonia nitrogen (NH4 +- N) removal rate be greater than 91%.And NO in start-up course3 ‑‑N/ΔNH4 +-N<0.11.The present invention solves the starting period longer disadvantage of CANON denitrification process, while three phase separator is conducive to retain higher biomass in sludge holding reactor, realizes the removal efficiency of higher nitrogen in a short time.
Description
Technical field
The invention belongs to the water treatment fields to nitrogenous effluent, are related to a kind of quick start method of CANON denitrification process,
It is particularly used for the domestication realization pair in the case where constantly changing flow condition to anaerobic ammonium oxidation sludge and short distance nitration sludge
The method of the quick start of CANON technique.
Background technique
With the development of industry and agricultural, a large amount of untreated nitrogenous effluents are discharged into environment, cause water eutrophication
Change, consumption water body in dissolved oxygen, to people and biology it is toxic.And sewage treatment plant adopts mostly in the water treatment procedure of reality
With traditional nitration denitrification technology, but traditional nitration denitrification denitrogenation process long flow path, cost are high, power consumption
Greatly, low efficiency and processing cost are high, handle high ammonia-nitrogen wastewater more problems in practical applications.Short distance nitration-anaerobic ammoxidation
Technique, which has, does not need addition organic carbon source, can save the advantages such as aeration quantity, operating cost be low, become the hot spot of research,
But the technique still has many disadvantages, such as anaerobic ammonium oxidation sludge is few, the domestication culture of Anammox (ANAMMOX) bacterium
Slowly, the problems such as starting process time is long, reactor fluctuation of service, and research is concentrated mainly on low ammonia nitrogen concentration, less salt at present
Divide under wastewater conditions and runs.
Since CANON is to concentrate on short distance nitration and anaerobic ammonium oxidation process in one reactor to carry out, it is depended on
Nitrococcus (AOB), nitrobacteria (NOB) and Anammox (ANAMMOX) bacterium are to dissolved oxygen (DO) and nitrite nitrogen
(NO2 -- N) Competition.In the presence of oxygen, AOB is using ammonia nitrogen as electron donor, O2For electron acceptor, by ammonia nitrogen
It is oxidized to nitrite nitrogen (NO2 -- N), ANAMMOX bacterium is a kind of anaerobism autotrophic bacterium, and nitrite is utilized in the case where anaerobism
Remaining ammonia nitrogen is converted into nitrogen (N by nitrogen2), while generating a small amount of nitrate nitrogen (NO3 --N)。
Therefore, can quick start CANON reactor be able to maintain again simultaneously reactor stable operation be realize it is efficiently de-
The key of nitrogen.Also there is certain facilitation to later engineering application.
CN102642924A discloses a kind of quick start method category of normal-temperature low-ammonia-nitrogen sewage Full Autotrophic Ammonium Removal Process
In municipal sewage treatment and recycling field.Start whole process autotrophic denitrification (CANON) technique in a biofilter reactor,
It the steps include: to be inoculated with part nitrifying sludge first, and under conditions of adequate oxygen supply, carry out aerobic nitrification starting, construct with Asia
Nitrifier and nitrifier are leading microflora；Then by intermittent aerating/anaerobism, inhibit the growth of nitrifier, be enriched with
Anaerobic ammonia oxidizing bacteria；Last continuous aeration controls ammonium oxidation to nitrous acid phase, optimizes nitrosation by restricted oxygen supply
The microenvironment that bacterium and anaerobic ammonia oxidizing bacteria coexist, successfully starts CANON technique.The present invention solves anaerobism ammonia for a long time
Oxidizing bacteria growth is enriched with slower problem, and Starting mode is simple and easy, reduces the difficulty of one-step autotrophic nitrogen removal system starting
Degree, the starting for normal-temperature low-ammonia-nitrogen simulated wastewater CANON technique provide method.
The quick start method that CN103224284A discloses a kind of membrane bioreactor Full Autotrophic Ammonium Removal Process belongs to
Municipal sewage treatment and recycling field.Start Full Autotrophic Ammonium Removal Process in membrane bioreactor (MBR), the steps include:
It is inoculated with urban sewage plant aeration tank nitrifying sludge first, restores sludge activity under room temperature and lower influent ammonia nitrogen；Secondly it reduces
Aeration quantity gradually increases ammonia nitrogen concentration, success enriching ammonia oxidation bacteria；Finally reducing aeration quantity again reduces DO in water, and induction is detested
Anaerobic ammonium oxidation bacterium, successfully starts up Full Autotrophic Ammonium Removal Process.
It is quickly autotrophy nitrosation sludge by complete nitrification sludge mutagenesis that CN103723821A, which discloses a kind of SBR mode,
Method belongs to water environmental management and regeneration field, sewage treatment plant's autotrophic denitrification field.It is inoculated with sewage plant nitrifying sludge, control first
High-concentration ammonia-nitrogen processed, high free ammonia, high aeration condition prevent sludge bulking, it is made to rapidly adapt to sbr reactor device；Then in high ammonia
Heterotrophic microorganism is gradually eliminated under nitrogen, the condition of water quality without organic carbon source；Finally inhibit NOB etc. under conditions of low dissolved oxygen certainly
The growth of bacteria purifies nitrosation sludge, is successfully realized transformation of the heterotrophic nitrification sludge to autotrophy nitrosation sludge.The present invention
Heterotroph is eliminated, and autotrophy Short-Cut Nitrification Process is cultivated.It is small compared to traditional denitrification process oxygen demand, energy consumption is low, big without adding
Measure organic carbon source.But the above method reactor start-up period is long, starting is slow, kind mud requires harshness.
Summary of the invention
The purpose of the present invention is realized by the service condition and ammonia nitrogen influent concentration of control CANON technique to anaerobism ammonia oxygen
The fast enriching culture for changing sludge and short distance nitration sludge, starts reactor in a short time, enables technique stable operation.
Explanation of nouns:
CANON: full autotrophic passes through nitrite denitrification technique.
ANAMMOX bacterium: anaerobic ammonia oxidizing bacteria (anaerobic ammonium oxidation, Anammox).
The abbreviation of UASB:Up-flow Anaerobic Sludge Bed/Blanket, i.e. up-flow anaerobic sludge blanket are anti-
Answer device.
The abbreviation of HRT:Hydraulic Retention Time, i.e. hydraulic detention time refer to that treatment sewage is reacting
The average reaction time of microbial action in mean residence time in device, that is, sewage and bioreactor.
The abbreviation of MLSS:Mixed Liquid Suspended Solids, i.e. mixed genetic-neural network, and it is mixed
Close liquid sludge concentration.
AOB: nitrococcus.
NOB: nitrobacteria.
DO: dissolved oxygen (dissolved oxygen) refers to the amount for being dissolved in oxygen in water, is usually denoted as DO, in every liter of water
The milligram number of oxygen indicates.
The present invention provides a kind of quick start method of CANON denitrification process, and reactor uses up-flow anaerobic sludge blanket
Reactor (UASB) and composite filling, mainly comprise the steps that
(1) in seed sludge to reactor: the activated sludge and ANAMMOX bacterium sludge of sanitary sewage as seed sludge,
After two kinds of sludge are mixed, it is added from reactor head.
(2) by the way of gradually increasing aeration and gradually decreasing the dosage of nitrite: control water inlet NH4 +- N is 150-
200mg/L, hydraulic detention time (HRT) are 20-24h, and adjusting pH is 7.5-8.0.The control of inside reactor reaction zone temperature exists
31 ± 1 DEG C, it is divided into following three phases:
First stage: control water inlet NH first4 +- N is 150-200mg/L, NO2 -- N concentration is 55-110mg/L, aeration quantity
9-10mL/min is maintained, stablizes 2~3 days time when ammonia nitrogen removal frank reaches 80% or more；
Second stage: other conditions remain unchanged, and reduce NO2 -- N concentration improves aeration quantity to 12- to 50-55mg/L
15mL/min, being at this time discharged ammonia nitrogen concentration can gradually decrease, when reducing to 10mg/L, into the phase III.
Phase III: NO is reduced2 -- N concentration improves aeration quantity when being discharged ammonia nitrogen concentration and increasing to 18- to 0mg/L
20mL/min, as water outlet NH4 +- N is less than 25mg/L, is discharged NO2 -- N is less than 10mg/L, and water outlet nitrate is less than 15mg/L, NO3 --
N/△NH4 +- N value illustrates there is not NO in reactor less than 0.112 -- N accumulates short distance nitration-anaerobic ammoxidation and stablizes, finally
TN removal rate is up to 80%, and at this moment internal system is not needing the outer nitrite added, and tend towards stability state.
(3) sludge on inside reactor condiment gradually becomes red, and ammonia nitrogen removal frank maintains 80% or more, water outlet
NO2 -- N is less than 10mg/L, and water outlet nitrate is less than 15mg/L, NO3 --N/△NH4 +- N value is less than 0.11, reactor start-up success.
Preferably, in step (1), ANAMMOX sludge uses monosodium glutamate sewage treatment plant Anammox floc sludge, wherein
Anaerobic ammonium oxidation sludge inoculation is 0.8~1.2L, and mixed liquor sludge concentration (MLSS) is 9000~9500mg/L.Sanitary sewage
Activated sludge inoculation be 1.5~2.5L, MLSS be 5500~6500mg/L.
It is furthermore preferred that ANAMMOX sludge uses certain monosodium glutamate sewage treatment plant Anammox floc sludge in step (1),
Wherein anaerobic ammonium oxidation sludge inoculation is 1L, and mixed liquor sludge concentration (MLSS) is 9200mg/L.The activity of sanitary sewage is dirty
Mud inoculation is about 2L, MLSS 6000mg/L.
Preferably, in step (2), water inlet is laboratory artificial distribution, control water inlet NH4 +- N is 150-200mg/L, waterpower
Residence time (HRT) is 20-24h.By controlling NO2 -The dosage of-N, Lai Shixian NO2 -- N concentration is by initial 100-110mg/L
Then it gradually reduces until being 0, by additionally adding NO2 -- N reduces AOB conversion NH4 +The oxygen demand of-N, to reduce exposure
Tolerance, and under conditions of low DO, the growth of NOB is easy to be suppressed, and is conducive to the growth of AOB and ANAMMOX bacterium.
Preferably, in step (2), NaHCO is used3、Na2CO3Or Na3PO3Adjusting pH is 7.5-8.0.
Preferably, in step (2), temperature of reactor is controlled by digital display thermostat water bath, passes through external heating cycle water
Guarantee the control of inside reactor reaction zone temperature at 31 ± 1 DEG C.
Preferably, in step (2), the reaction time of first stage is 10 days.
Preferably, in step (2), the reaction time of second stage is 5 days.
Preferably, in step (2), the reaction time of phase III is 10 days.
The UASB reactor is purchased from Shanghai and red Science and Technology Ltd..
The filler is composite filling, mainly includes dacron thread and plastics ring.The ring of plastic hoop is divided into inside and outside two circle,
Inside and outside two circle is mainly connected by plastics branch.Dacron thread is mainly pressed on the ring of plastic hoop by outer ring, makes fibre bundle
It is uniformly distributed；Inner ring is flakes plastics branch, biofilm and can effectively cut bubble, improve the transfer rate and benefit of oxygen
With rate.
Concrete principle is as follows:
PH maintains 7.5-8.0 in entire reaction, and temperature control is that Anammox and short distance nitration are anti-at 31 ± 1 DEG C
Answer optimal conditions.As water outlet NH4 +- N < 25mg/L is discharged NO2 -- N < 10mg/L is discharged nitrate < 15mg/L, NO3 --N/
△NH4 +- N value is both less than 0.11, illustrates there is not NO in reactor2 -- N accumulates short distance nitration-anaerobic ammoxidation and stablizes, finally
TN removal rate is up to 80%, NO3 --N/△NH4 +- N measured value illustrates I, II stage NO less than 0.113 -The generation of-N mainly passes through
Anammox reaction, NOB activity are lower without utilizing O2By NO2 -- N is converted into NO3 --N.It can be seen that aeration quantity I, II stage
Aeration quantity it is lower to ANAMMOX bacterium activity generate inhibit and NOB activity be inhibited.In III stage water inlet NO2 --N
Concentration is 0mg/L, without NO2 -The accumulation of-N, the control of aeration quantity is so that AOB becomes short distance nitration-anaerobic ammoxidation technique
Rate-determining steps.
The present invention has following benefit:
The present invention solves the problems, such as that Full Autotrophic Ammonium Removal Process starting is slow, kind mud requirement is harsh, provides a kind of exist
The strategy of quick start Full Autotrophic Ammonium Removal Process in UASB reactor realizes the efficient removal of ammonia nitrogen, is UASB reactor
Long-term efficient stable operation applied to Full Autotrophic Ammonium Removal Process provides method.Using three phase separator and composite filling into
The starting of row Anammox can preferably realize that sludge retention keeps the biomass in reactor, and composite filling can be real
Now better biofilm, while bubble can be effectively cut again, improve the transfer rate and utilization rate of oxygen.It is dirty to be inoculated with a small amount of ANAMMOX
Mud and sanitary sewage activated sludge substantially reduce the starting period so that ANAMMOX bacterium becomes the dominant bacteria in reactor.
(1) sludge can preferably be retained using three phase separator using UASB reactor and keeps higher biomass in reactor, it is dirty
Mud, water, gas can be separated preferably.Composite filling has biofilm speed fast, is easy demoulding and updates, reactor being capable of fast quick access
The advantages that kind and shortening starting time.
(2) present invention is under conditions of being inoculated with anaerobic ammonium oxidation sludge and activated sludge and mixing, by control aeration quantity and
The concentration for gradually reducing nitrite of water inlet has successfully started up CANON technique in 25 days, and is able to maintain that stabilization.
(3) index being discharged maintains within the specified scope, has established certain basis for later engineering application.
Detailed description of the invention
Fig. 1 is the reactor assembly with three phase separator
1. 4. composite filling of inlet tank 2. intake pump, 3. sand core aeration head, 5. three phase separator 6. is discharged 7. gases
8. aerator of flowmeter
Fig. 2 Inlet and outlet water NH4 +- N and NH4 +- N removal rate versus time curve
Fig. 3 Inlet and outlet water NO2 -- N and NO2 -- N removal rate versus time curve
Fig. 4 is discharged NO3 -- N and δ NO3 -- N/ δ TN and δ NO3 --N/δNH4 +- N is worth versus time curve
Specific embodiment
Embodiment 1
It is inoculated with using activated sludge and anaerobic ammonium oxidation sludge as seed sludge, wherein anaerobic ammonium oxidation sludge connects
Kind is about 1L, MLSS 9200mg/L.The activated sludge inoculation of sanitary sewage is about 2L, MLSS 6000mg/L.By two kinds
After sludge mixing, it is added from reactor head.Test water uses the carbon-free waste water of high ammonia nitrogen of manual simulation, and synthetic wastewater is main
NH is provided4 +- N, a great number of elements of microorganism growth and microelement and phosphorus, by adding NaHCO3Adjust pH.NH4 +- N concentration
Maintain 200mg/L, NO2 -- N concentration maintains 0-110mg/L, NaHCO3Concentration maintains 1700mg/L, and inlet tank is passed through argon
Gas carries out uniformly mixed, while removing the dissolved oxygen in water.
Reactor is made of organic glass, mainly includes reaction zone and three-phase separation area, effective volume 7L, waste water passes through
Peristaltic pump is discharged after being continuously entered by reactor bottom from top water outlet.Aeration quantity adjusts aeration quantity by spinner flowmeter,
Reactor bottom installs sand core aeration head.Inside is equipped with composite filling, filling rate 80%.Length is about 1 meter.Temperature of reactor
It is controlled by digital display thermostat water bath, internal-response area temperature is controlled at 31 ± 1 DEG C.
Water inlet: NH4 +- N concentration maintains 200mg/L, NO2 -- N concentration maintains 0-110mg/L, NaHCO3Concentration maintains
1700mg/L, pH maintain 7.5-8.0, and temperature is controlled at 31 ± 1 DEG C.HRT is for 24 hours.By the way of continuum micromeehanics.It takes daily
NH in sample detection water outlet4 +-N、NO2 --N、NO3 -- N, by detecting NH4 +-N、NO2 --N、NO3 -The concentration and sludge color of-N becomes
It is turned to the index parameter of start-up course.
Reaction: after activated sludge and anaerobic ammonium oxidation sludge are inoculated into reactor simultaneously, beforehand control water inlet NH4 +-N
It is for 24 hours for 200mg/L, HRT.This stage passes through addition NO2 -The amount of-N, concentration by initial 110mg/L then gradually reduce until
It is 0, by additionally adding NO2 -- N reduces AOB conversion NH4 +The oxygen demand of-N, to reduce aeration quantity, and low DO's
Under the conditions of, the growth of NOB is easy to be suppressed, and is conducive to the growth of AOB and ANAMMOX bacterium, has been completed at the same time AOB, ANAMMOX
The biofilm of bacterium and the inhibition of NOB.Work as NO2 -NH is discharged when-N has 110mg/L to become 55mg/L4 +- N concentration, which is presented, to be increased, then anti-
Answering device to increase aeration quantity becomes 15mL/min from 10mL/min, is discharged NH4 +- N concentration gradually decreases.Work as NH4 +- N concentration is lower than
When 10mg/L, NO is adjusted2 -- N concentration becomes 0mg/L from 55mg/L.It is discharged NH at this time4 +- N concentration increases again, in order to improve NH4 +-
The removal rate of N, increasing aeration quantity again to be increased by 15mL/min is 20mL/min.Obviously as water inlet NO2 -It is needed when-N concentration reduces
Aeration quantity is improved to guarantee NH4 +- N conversion ratio.
Final outflow water NH4 +- N < 25mg/L is discharged NO2 -- N < 10mg/L is discharged nitrate < 15mg/L, NO3 --N/△
NH4 +- N value is both less than 0.11, illustrates there is not NO in reactor2 -- N accumulates short distance nitration-anaerobic ammoxidation and stablizes, final TN
For removal rate up to 80%, volume nitrogen elimination capacity (NRR) is 0.2Kg ﹒ m-3﹒ d-1, the functional short distance nitration-anaerobic of ANAMMOX bacterium
Ammonia oxidation process, which starts, successfully only have been used 25 days.
Embodiment 2
It is inoculated with using activated sludge and anaerobic ammonium oxidation sludge as seed sludge, wherein anaerobic ammonium oxidation sludge connects
Kind is about 1L, MLSS 9200mg/L.The activated sludge inoculation of sanitary sewage is about 2L, MLSS 6000mg/L.By two kinds
After sludge mixing, it is added from reactor head.Test water uses the carbon-free waste water of high ammonia nitrogen of manual simulation, and synthetic wastewater is main
NH is provided4 +- N, a great number of elements of microorganism growth and microelement and phosphorus, by adding NaHCO3Adjust pH.NH4 +- N concentration
Maintain 150mg/L, NO2 -- N concentration maintains 0-100mg/L, NaHCO3Concentration maintains 1700mg/L, and inlet tank is passed through argon
Gas carries out uniformly mixed, while removing the dissolved oxygen in water.
Reactor is made of organic glass, mainly includes reaction zone and three-phase separation area, effective volume 7L, waste water passes through
Peristaltic pump is discharged after being continuously entered by reactor bottom from top water outlet.Aeration quantity adjusts aeration quantity by spinner flowmeter,
Reactor bottom installs sand core aeration head.Inside is equipped with composite filling, filling rate 80%.Length is about 1 meter.Temperature of reactor
It is controlled by digital display thermostat water bath, internal-response area temperature is controlled at 31 ± 1 DEG C.
Water inlet: NH4 +- N concentration maintains 150mg/L, NO2 -- N concentration maintains 0-100mg/L, NaHCO3Concentration maintains
1700mg/L, pH maintain 7.5-8.0, and temperature is controlled at 31 ± 1 DEG C.HRT is for 24 hours.By the way of continuum micromeehanics.It takes daily
NH in sample detection water outlet4 +-N、NO2 --N、NO3 -- N, by detecting NH4 +-N、NO2 --N、NO3 -The concentration and sludge color of-N becomes
It is turned to the index parameter of start-up course.
Reaction: after activated sludge and anaerobic ammonium oxidation sludge are inoculated into reactor simultaneously, beforehand control water inlet NH4 +-N
It is for 24 hours for 150mg/L, HRT.This stage passes through addition NO2 -The amount of-N, concentration by initial 100mg/L then gradually reduce until
It is 0, by additionally adding NO2 -- N reduces AOB conversion NH4 +The oxygen demand of-N, to reduce aeration quantity, and low DO's
Under the conditions of, the growth of NOB is easy to be suppressed, and is conducive to the growth of AOB and ANAMMOX bacterium, has been completed at the same time AOB, ANAMMOX
The biofilm of bacterium and the inhibition of NOB.Work as NO2 -NH is discharged when-N has 100mg/L to become 50mg/L4 +- N concentration, which is presented, to be increased, then anti-
Answering device to increase aeration quantity becomes 15mL/min from 10mL/min, is discharged NH4 +- N concentration gradually decreases.Work as NH4 +- N concentration is lower than
When 10mg/L, NO is adjusted2 -- N concentration becomes 0mg/L from 50mg/L.It is discharged NH at this time4 +- N concentration increases again, in order to improve NH4 +-
The removal rate of N, increasing aeration quantity again to be increased by 15mL/min is 20mL/min.Obviously as water inlet NO2 -It is needed when-N concentration reduces
Aeration quantity is improved to guarantee NH4 +- N conversion ratio.Final outflow water NH4 +- N < 12mg/L is discharged NO2 -- N < 15mg/L is discharged nitre
Hydrochlorate < 15mg/L, NO3 --N/△NH4 +- N value is both less than 0.11, illustrates there is not NO in reactor2 -- N accumulates short distance nitration-
Anammox is stablized, and for final TN removal rate up to 80%, volume nitrogen elimination capacity (NRR) is 0.198Kg ﹒ m-3﹒ d-1, ANAMMOX
The functional short distance nitration-anaerobic ammoxidation technique of bacterium, which starts, successfully only have been used 26 days.
In conjunction with above-mentioned case, the time of general activated sludge process starting CANON technique is usually to answer at 100~300 days
It with reactor start-ups times such as some efficient reactor such as SBR, MBR and was used and of the invention opens at 50~100 days
The starting period greatly shortened to 20~40 days after flowing mode, improves the starting efficiency of reactor, has saved energy consumption and cost.
Claims (10)
1. a kind of quick start method of CANON denitrification process, reactor uses upflow anaerobic sludge blanket reactor (UASB)
And composite filling, it mainly comprises the steps that
(1) in seed sludge to reactor: the activated sludge and ANAMMOX bacterium sludge of sanitary sewage are as seed sludge, by two
After kind sludge mixing, it is added from reactor head；
(2) by the way of gradually increasing aeration and gradually decreasing the dosage of nitrite: control water inlet NH4 +- N is 150-
200mg/L, hydraulic detention time (HRT) are 20-24h, and adjusting pH is 7.5-8.0；The control of inside reactor reaction zone temperature exists
31 ± 1 DEG C, it is divided into following three phases:
First stage: control water inlet NH first4 +- N is 150-200mg/L, NO2 -- N concentration is 55-110mg/L, and aeration quantity maintains
In 9-10mL/min, stablize 2~3 days time when ammonia nitrogen removal frank reaches 80% or more；
Second stage: other conditions remain unchanged, and reduce NO2 -- N concentration improves aeration quantity to 12-15mL/ to 50-55mg/L
Min, being at this time discharged ammonia nitrogen concentration can gradually decrease, when reducing to 10mg/L, into the phase III；
Phase III: NO is reduced2 -- N concentration improves aeration quantity when being discharged ammonia nitrogen concentration and increasing to 18-20mL/ to 0mg/L
Min, as water outlet NH4 +- N is less than 25mg/L, is discharged NO2 -- N is less than 10mg/L, and water outlet nitrate is less than 15mg/L, NO3 --N/△
NH4 +- N value illustrates there is not NO in reactor less than 0.112 -- N accumulation, short distance nitration-anaerobic ammoxidation are stablized, final TN
Removal rate is up to 80%, and at this moment internal system no longer needs additional nitrite, and tend towards stability state；
(3) inside reactor sludge gradually becomes red, and ammonia nitrogen removal frank maintains 80% or more, is discharged NO2 -- N is less than 10mg/
L, water outlet nitrate are less than 15mg/L, NO3 --N/△NH4 +- N value is less than 0.11, reactor start-up success.
2. the quick start method of denitrification process as described in claim 1, which is characterized in that in step (1), ANAMMOX is dirty
Mud uses monosodium glutamate sewage treatment plant Anammox floc sludge, and wherein anaerobic ammonium oxidation sludge inoculation is 0.8~1.2L, mixes
Closing liquid sludge concentration (MLSS) is 9000~9500mg/L；The activated sludge inoculation of sanitary sewage is 1.5~2.5L, and MLSS is
5500~6500mg/L.
3. the quick start method of denitrification process as claimed in claim 1 or 2, which is characterized in that in step (1), ANAMMOX
Sludge uses certain monosodium glutamate sewage treatment plant Anammox floc sludge, and wherein anaerobic ammonium oxidation sludge inoculation is 1L, mixing
Liquid sludge concentration (MLSS) is 9200mg/L；The activated sludge inoculation of sanitary sewage is 2L, MLSS 6000mg/L.
4. the quick start method of denitrification process as claimed in claim 1 or 2, which is characterized in that in step (2), control into
Water NH4 +- N is 150-200mg/L, and hydraulic detention time (HRT) is 20-24h；Use NaHCO3、Na2CO3Or Na3PO3Adjusting pH is
7.5-8.0。
5. the quick start method of denitrification process as claimed in claim 1 or 2, which is characterized in that in step (2), reactor
Temperature is controlled by digital display thermostat water bath, guarantees that inside reactor reaction zone temperature is controlled 30 by external heat cycles water
~32 DEG C.
6. the quick start method of denitrification process as claimed in claim 1 or 2, which is characterized in that in step (2), the first rank
The reaction time of section is 10 days.
7. the quick start method of denitrification process as claimed in claim 1 or 2, which is characterized in that in step (2), second-order
The reaction time of section is 5 days.
8. the quick start method of denitrification process as claimed in claim 1 or 2, which is characterized in that in step (2), third rank
The reaction time of section is 10 days.
9. the quick start method of denitrification process as claimed in claim 1 or 2, which is characterized in that the filler is that combination is filled out
Material, composite filling includes dacron thread and plastics ring.
10. the quick start method of denitrification process as claimed in claim 9, which is characterized in that in the ring of plastic hoop is divided into
Outer two circle, inside and outside two circle are mainly connected by plastics branch；Dacron thread is mainly pressed on the ring of plastic hoop by outer ring, is made
Fibre bundle is uniformly distributed；Inner ring is flakes plastics branch.
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| CN201610976630.1A CN106348444B (en) | 2016-10-28 | 2016-10-28 | A kind of quick start method of CANON denitrification process |
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| CN107739086B (en) * | 2017-03-31 | 2020-04-28 | 青岛锦龙弘业环保有限公司 | Denitrification method of high-salinity wastewater |
| CN108862587B (en) * | 2018-07-13 | 2021-07-30 | 北京工业大学 | Device and method for treating high ammonia nitrogen wastewater and domestic sewage by combining continuous flow shortcut nitrification/anaerobic ammonium oxidation with DEAMOX |
| CN109734179A (en) * | 2018-12-30 | 2019-05-10 | 北京化工大学 | CANON technique quick start method in a kind of up-flow type biomembrane reactor |
| CN111333186A (en) * | 2020-03-23 | 2020-06-26 | 西安建筑科技大学 | Coupling biological filter column reactor and two-end step-by-step quick starting method |
| CN111620442A (en) * | 2020-06-24 | 2020-09-04 | 安平县弘嘉环保技术有限公司 | Integrated shortcut nitrification/anaerobic ammonia oxidation rapid in-situ starting method and device |
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