CN106554084B - A kind of quick start method of waste water treatment system short-cut nitrification and denitrification - Google Patents
A kind of quick start method of waste water treatment system short-cut nitrification and denitrification Download PDFInfo
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Abstract
The invention discloses a kind of quick start methods of waste water treatment system short-cut nitrification and denitrification, including (1), and aerobic activated sludge is inoculated in reactor, and adds growth promoter A；(2) first two kinds of modes of operation of continuum micromeehanics are then used to carry out system starting using intermittent water inflow；(3) when intermittent duty, stop adding growth promoter A when concentration of suspension is lower than 100mg/L in water outlet, change and throw denitrogenation microbial inoculum and growth promoter B；(4) when influent ammonia nitrogen reaches 400-700mg/L, and in 12h removal rate up to 60% or more when be changed to continuum micromeehanics, and add denitrogenation microbial inoculum and growth promoter B；(5) when nitrogen removal rate is up to 70% or more, raising ammonia nitrogen concentration, until influent ammonia nitrogen reaches 500-1000mg/L, nitrogen removal rate completes start-up course up to 80% or more.The present invention greatly reduces the starting difficulty of short distance nitration and is obviously shortened on-stream time, and can guarantee the operation steady in a long-term of reactor, to waste water treatment efficiency height, removal while can be realized ammonia nitrogen, total nitrogen and COD.
Description
Technical field
The invention belongs to technical field of waste water processing, and in particular to a kind of waste water treatment system short-cut nitrification and denitrification it is fast
Fast starting method, this method may be implemented to handle wastewater to reach standard while waste water treatment system quick start.
Background technique
An important research direction of the wastewater biological denitrificaion as water pollution control experienced de- from mature traditional biological
Nitrogen is to novel biological dinitrification process.Process of Biological Nitrogen Removal is low COD(chemical oxygen consumption (COC), indicates the index of carbon source content, with
The measurement of Cr method) processing of high ammonia-nitrogen wastewater provides feasible approach.Especially nitrosation bio-denitrification technology is due to having drop
Low energy consumption saves carbon source, reduces the advantages that sludge output, by the common concern of people, becomes wastewater biological denitrificaion field
One of research and the hot spot of application.
Having be actuated for more detailed research of the document to one-step autotrophic nitrogen removal biofilm SBR technique, (Fang Fang etc., China gives
Water draining, 2006,22 (1): 58-61), its feature be inoculated in biofilm SBR reactor common aerobic activated sludge and
Anaerobic sludge is (30 ± 2) DEG C, pH value 7.5-8.5, DO(dissolved oxygen in temperature) it is that 0.8-1.0mg/L and HRT(waterpower is stopped
Stay the time) be for 24 hours under conditions of, low-concentration ammonia-nitrogen (60-120mg/L) waste water in processing, nitrosation selection the phase last 80d altogether,
After sludge acclimatization phase, nitrosation selection phase and the sludge laundering period three more typical stages, nitrosoation rate reaches
77%, denitrification ability 40%.
Propose a kind of ammonia-containing water short distance nitration quick start method in CN200410017477.7, its feature be with
Aerobic activated sludge is as inoculum, and using continuous operation mode, by temperature control at 25-28 DEG C, pH value is controlled in 7.2-
7.5, Dissolved Oxygen concentration Control is enriched with enough nitrifiers in 2.5-3.0mg/L；When ammonia nitrogen removal frank is up to 98% and stable
When pH value is transferred to 8.0-8.2, temperature controls between 32-35 DEG C, and Dissolved Oxygen concentration Control is preferably sub- in 1.0-1.5mg/L
Nitrate bacteria eliminates nitrate bacteria.The initial concentration of ammonia-containing water is 5-6mmol/L, final concentration of 30mmol/ in start-up course
L, operation 39d-46d can realize the quick start of short distance nitration.CN200810012685.6 discloses a kind of ammonia-containing water short distance
The quick start method of nitrification, its feature are dirty with the nitrobacteria of the enrichment either aerobic activity of nitrobacteria and waste plant
The mixture of mud is as inoculum；Although realizing the quick start of short distance nitration, total nitrogen removal problem is not accounted for.
Although at present short-cut nitrification and denitrification technique come into the industrial applications stage, in the prevalence of load compared with
The deficiencies of small, removal rate is relatively low, fluctuation of service, and the starting time is long, and some techniques being currently running are total there is no considering
Nitrogen removes problem.Which greatly limits the development of short-cut nitrification and denitrification technique and applications.CN201210130659.X is disclosed
A kind of quick start method of ammonia-containing water short-cut nitrification and denitrification, its feature are with the nitrobacteria of enrichment and with nitrite nitrogen
For nitrogen source denitrifying bacteria as inoculum, although this method realizes the quick start of short distance nitration, but because use
Nitrobacteria and denitrifying bacteria add again after needing two bacteroids to cultivate respectively in different culture solutions, and incubation is multiple
It is miscellaneous.
Therefore how economical and efficient and quick start short-cut nitrification and denitrification technique, in higher load and ammonia nitrogen removal frank item
Can guarantee under part the operation steady in a long-term of reactor by be ammonia-containing water process field research one of emphasis.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of easy to operate, lower waste water treatment system short distance of expense
The quick start method of nitration denitrification.The method of the present invention greatly reduces the starting difficulty of short distance nitration and is obviously shortened out
It between working hour, and can guarantee the operation steady in a long-term of reactor, to waste water treatment efficiency height, can be realized ammonia nitrogen, total nitrogen and COD
It removes simultaneously.
The quick start method of waste water treatment system short-cut nitrification and denitrification of the present invention, including following content:
(1) it is inoculated with waste water treatment plant's aerobic activated sludge first in bioreactor, and adds microorganism growth and promotes
Agent A；The growth promoter A includes metal salt, polyamines and inorganic acid azanol, and the metal salt is by calcium salt, mantoquita, magnesium
Salt and/or ferrous salt composition；
(2) first two kinds of modes of operation of continuum micromeehanics are then used to carry out system starting using intermittent water inflow；
(3) every batch of secondary response for 24 hours, improves influent ammonium concentration when ammonia nitrogen removal frank is greater than 90%, every time when intermittent duty
Increase rate is 50-100mg/L, stops adding growth promoter A when concentration of suspension is lower than 100mg/L in water outlet, changes throwing
Denitrogenation microbial inoculum and microbial growth promoters B, the growth promoter B include metal salt, polyamines and organic acid azanol,
The metal salt is made of calcium salt, mantoquita, magnesium salts and/or ferrous salt；
(4) when influent ammonium concentration reaches 400-700mg/L, and in 12h ammonia nitrogen removal frank up to 60% or more when be changed to connect
Continuous water inlet mode of operation, and add denitrogenation microbial inoculum and microbial growth promoters B；
(5) under conditions of keeping 70% or more nitrogen removal rate, ammonia nitrogen in waste water concentration is gradually increased, until influent ammonia nitrogen
Concentration reaches 500-1000mg/L, when nitrogen removal rate is up to 80% or more in system, completes the start-up course of short-cut nitrification and denitrification.
In growth promoter A of the present invention, metal salt is 40-100 parts by weight, preferably 50-80 parts by weight；Polyamines
Substance is 5-30 parts by weight, preferably 10-20 parts by weight；Inorganic acid azanol is 0.5-15 parts by weight, preferably 2-10 weight
Part.The inorganic acid azanol is one or more of hydroxylamine hydrochloride, hydroxyl sulfate or phosphatic hydroxylamine, preferably sulfuric acid hydroxyl
Amine.
In growth promoter B of the present invention, metal salt is 40-100 parts by weight, preferably 50-80 parts by weight；Polyamines
Substance is 5-30 parts by weight, preferably 10-20 parts by weight；Organic acid azanol is 0.5-15 parts by weight, preferably 2-10 weight
Part.The organic acid azanol is the mixture of formic acid azanol, hydroxylamine acetate or both.
In growth promoter A and B of the present invention, the metal salt can be calcium salt, magnesium salts and mantoquita, wherein
Ca2+、Mg2+And Cu2+Molar ratio be (5-15): (5-25): (0.5-5), preferably (8-12): (10-20): (1-4)；Or
It is calcium salt, ferrous salt and mantoquita, wherein Ca2+、Fe2+And Cu2+Molar ratio be (5-15): (1-8): (0.5-5), preferably (8-
12): (2-6): (1-4)；Either calcium salt, magnesium salts, ferrous salt and mantoquita, wherein Ca2+、Mg2+、Fe2+And Cu2+Molar ratio be
(5-15): (5-25): (1-8): (0.5-5), preferably (8-12): (10-20): (2-6): (1-4).
In growth promoter A and B of the present invention, the calcium salt is CaSO4Or CaCl2, preferably CaSO4；Magnesium salts
For MgSO4Or MgCl2, preferably MgSO4；Ferrous salt is FeSO4Or FeCl2, preferably FeSO4；Mantoquita is CuSO4Or
CuCl2, preferably CuSO4。
In growth promoter A and B of the present invention, the polyamines are the mixed of spermine, spermidine or both
Close object.
The aerobic nitrogen removal activated sludge inoculum concentration of the method for the present invention (1) described inoculation is the 10%- of handled wastewater volume
50%；The bored exposure processing of 12-24h is taken after inoculation of activated-sludge, it is 3.0-5.0mg/L that dissolved oxygen concentration is controlled during bored exposure, right
Activated sludge is eluriated.
Intermittent water inflow mode of operation described in the method for the present invention (2), the initial ammonia nitrogen concentration of water inlet are 100-200mg/L,
COD concentration is 300-600mg/L；Controlling treatment temperature is 20-40 DEG C, pH value 7.8-8.2, dissolved oxygen concentration 1.0-
5.0mg/L, carbon-nitrogen mass ratio 2:1-4:1.Intermittent water inflow mode of operation can take batch to change water, anti-under the conditions of blowing air
It answers, then stops ventilating, after natural subsidence, supernatant is discharged, leaves thallus, then filled into reactor new useless containing ammonia
Water.When intermittent water inflow operates, growth promoter A is added according to promoter concentration 10-40mg/L in sewage daily.Work as ammonia nitrogen removal
Rate improves influent ammonium concentration when being greater than 90%, the amplitude that each ammonia nitrogen concentration improves is 50-100mg/L.When the suspension in water outlet
Object concentration adds denitrogenation microbial inoculum and microbial growth promoters B when being lower than 100mg/L.Batch is mended when changing water every 2-5 batch
Add a growth promoter B, dosage is added according to promoter concentration 10-40mg/L in sewage disposal system, preferably 20-
30mg/L is added.When influent ammonium concentration reaches 400-700 mg/L, and ammonia nitrogen removal frank is up to 60% or more in 12h
It is changed to continuum micromeehanics mode of operation.
The hydraulic detention time of continuum micromeehanics mode of operation described in the method for the present invention (2) is set as 14-24h, controls pH value
In 8.2-8.5, temperature is 20-40 DEG C, dissolved oxygen concentration 0.2-4.0mg/L, carbon-nitrogen mass ratio 3:1-10:1.It is de- adding
Nitrogen microbial inoculum and under conditions of keeping 70% or more nitrogen removal rate, is gradually increased ammonia nitrogen in waste water concentration or gradually decreases high containing ammonia
The extension rate of waste water, until influent ammonium concentration reaches 500-1000mg/L, nitrogen removal rate is preferably up to 80% or more in system
When 90% or more, the start-up course of short-cut nitrification and denitrification is completed.A growth promoter was added when continuous operation every 2-5 days
B, dosage are added according to promoter concentration 10-40mg/L in sewage disposal system, and preferably 20-30mg/L is added.
Denitrogenation microbial inoculum described in the method for the present invention (3) and (4) mainly by arthrobacterium (Arthrobacter creatinolyticus) FDN-1, Shui Shi Flavobacterium (Flavobacterium mizutaii) FDN-2, Paracoccus denitrificans
(Paracoccus denitrificans) DN-3 and Methylobacterium (Methylobacterium phyllosphaerae)
SDN-3 composition, four kinds of bacterial strains are bacterium described in CN102465105, CN102465106, CN102465104, CN102465103
Strain, the thallus volume ratio that when intermittent water inflow adds are 1:2:(8-15): (8-15), the thallus volume ratio that whens continuum micromeehanics adds are
(8-15): (8-15): 2:1.(thallus volume, which refers to, is centrifugated under the conditions of 10,000 turns per minute obtaining after five minutes after culture
Thallus volume).In the present invention, four kinds of bacterial strains are individually cultivated first, are mixed in proportion again altogether after obtaining seed liquor respectively
With amplification culture.Bacteria suspension after amplification culture requires supplementation with the additives such as nutrient solution and is saved, and nutrient solution volume is outstanding for bacterium
2-20 times of liquid product.Denitrogenation microbial inoculum described in the method for the present invention can take the mode added in batches or take disposable
Dosing method, dosage are added according to the 0.1%-1% of handled wastewater volume.
In the method for the present invention, ammonia-containing water short-cut nitrification and denitrification can occur in all ammonia-containing water biochemical processing process
And its during deformation technique, as intermittent activated sludge process (SBR), anaerobic-aerobic activated sludge process (AO), anaerobic/anoxic are good
Oxygen activity sludge (A2O), anaerobism two-stage aerobic technique (AO2), biological aerated filter (BAF) etc..
The present invention adds the denitrogenation microbial inoculum with heterotrophic nitrification-aerobic denitrification function simultaneously in active sludge processing system
Cooperate microbial growth promoters A and B to complete the start-up course of short-cut nitrification and denitrification, when starting by intermittent operation mode and
Continous way mode of operation combines, and in a manner of intermittent operation and adds micro- based on degradation of ammonia nitrogen under lower ammonia nitrogen concentration
The quick combination of biological growth accelerant A and activated sludge improves microorganism by using the mode that ammonia nitrogen concentration is gradually increased
To the adaptability of waste water, then in a manner of continuous operation and adds denitrogenation microbial inoculum and microbial growth promoters B and realize waste water
Denitrogenation processing.Compared with prior art, due to the culture easier than Autotrophic nitrification bacterium of Heterotrophic nitrification bacterium, simultaneously because promotor
Cooperation adds so that in activated sludge denitrification microorganism under the collective effect of metal salt, polyamines and hydroxylamines,
The fast breeding for realizing cell, can quickly utilize substrate, improve the denitrification rates of whole system, enable added microbial inoculum
It is enough quickly to be combined with activated sludge, thallus can be shortened to the laundering period of waste water, further curtailment of operation.And it solves
The relatively large problem of microbial inoculum dosage in the prior art, reduces microbial inoculum toxigenic capacity.
The quick start method of waste water treatment system short-cut nitrification and denitrification of the present invention be by different water intake mode and
The denitrogenation microbial inoculum realization of different microorganisms growth promoter cooperation different proportion is added, adding for promotor can reduce denitrogenation
The usage amount of microbial inoculum, due to the speed of growth of Heterotrophic nitrification bacterium is fast, to the adaptable of waste water, on-stream time can than add from
Feeding nitrobacteria wants short, and denitrifying bacterium therein is easy culture, also significantly reduces labor intensity.This quick start method is big
It reduces the starting difficulty of short distance nitration greatly and is obviously shortened on-stream time, and can guarantee the operation steady in a long-term of reactor,
To waste water treatment efficiency height, removal while can be realized ammonia nitrogen, total nitrogen and COD.
Specific embodiment
The invention proposes a kind of quick start methods of waste water treatment system short-cut nitrification and denitrification.When this method starts
Between it is short, ammonia nitrogen loading is high, and ammonia nitrogen, total nitrogen and COD removal rate are all larger than 95%, and can guarantee that reactor is run steadily in the long term.
The preparation method of heterotrophic nitrification-aerobic denitrification denitrogenation microbial inoculum of the present invention and the formula of microbial inoculum and group prejudice are special
Sharp CN201410731296.4.
The preparation method of microbial growth promoters of the present invention such as CN201410585417.9,
CN201410585418.3, CN201410585482.1, CN201410585430.4, CN201410585449.9 and
The preparation of CN201410585485.5 the method.The present invention prepares six kinds of models according to different ratio and formula
Microbial growth promoters, the promoter concentration are 0.5g/L.
The formula and ratio of 1 promotor of table
The quick start method of ammonia-containing water short-cut nitrification and denitrification proposed by the present invention is as follows:
(1) waste water treatment plant's aerobic activated sludge is inoculated with first in bioreactor, inoculum concentration is handled waste water body
Long-pending 10%-50%.Microbial growth promoters A is added according to promoter concentration 15mg/L in sewage daily, starts short distance nitration
Denitrification denitrogenation process.
(2) intermittent water inflow mode of operation is first used, using the ammonia-containing water of 100-300mg/L or so as water inlet, is gradually mentioned
High influent ammonium concentration, controlling pH at this time is 7.8-8.2, and dissolved oxygen concentration 1.0-5.0mg/L, temperature is 20-35 DEG C, carbon nitrogen
Mass ratio is 2:1-4:1.
(3) influent ammonium concentration is improved when ammonia nitrogen removal frank is greater than 90%, the amplitude that each ammonia nitrogen concentration improves is 50-
100mg/L.Stop adding accelerant A when concentration of suspension is lower than 100mg/L in water outlet, changes and throw the anti-nitre of heterotrophic nitrification-aerobic
Change denitrogenation microbial inoculum and microbial growth promoters B, in heterotrophic nitrification-aerobic denitrification denitrogenation microbial inoculum FDN-1, FDN-2, DN-3 and
The volume ratio of tetra- kinds of bacterial strains of SDN-3 is 1:2:8-15:8-15, and dosage is the 0.1%-1% of handled wastewater volume.Denitrogenation is added
Microbial growth promoters B is added according to promoter concentration 25mg/L in sewage every 2-5 batch after microorganism.
(4) when influent ammonium concentration reaches 400-700mg/L, and in 12h ammonia nitrogen removal frank up to 60% or more when be changed to connect
Continuous water inlet mode of operation, and heterotrophic nitrification-aerobic denitrification denitrogenation microbial inoculum is added, FDN-1, FDN-2, DN-3 and SDN- in microbial inoculum
The volume ratio of 3 four kinds of bacterial strains is 8-15:8-15:2:1, and dosage is the 0.1%-1% of handled wastewater volume.The micro- life of denitrogenation is added
Microbial growth promoters B was added according to promoter concentration 25mg/L in sewage every 2-5 days after object.Control continuous operation mode
Hydraulic detention time be 14-20h, pH value 8.2-8.5, dissolved oxygen concentration 0.2-4.0mg/L, carbon-nitrogen mass ratio 3:1-
10:1。
(5) under conditions of keeping 70% or more nitrogen removal rate, ammonia nitrogen in waste water concentration is gradually increased, until influent ammonia nitrogen
Concentration reaches 500-1000mg/L, when nitrogen removal rate is up to 80% or more in system, completes the start-up course of short-cut nitrification and denitrification.
Embodiment 1
Reactor is carried out as test water for the waste water of 800mg/L using autogamy ammonia nitrogen concentration for 300mg/L, COD concentration
Short-cut nitrification and denitrification start test, pH control is controlled in 7.9, temperature in 20 DEG C, dissolved oxygen concentration in start-up course and is
1.5-3.0mg/L carbon-nitrogen mass ratio 4:1.Adaptability is carried out first, in accordance with 20% inoculation of activated-sludge of handled wastewater volume to tame and docile
Change, while adding microbial growth promoters A- I according to promoter concentration 15mg/L in sewage daily, starts the anti-nitre of short distance nitration
Change denitrification process.First intermittent duty, reaction stop ventilation afterwards for 24 hours, supernatant are discharged after natural subsidence, leaves activated sludge, so
New ammonia-containing water is filled into reactor afterwards.The ammonia nitrogen concentration that water inlet is improved when ammonia nitrogen removal frank is greater than 90%, is improved every time
Amplitude be 100mg/L, operation 3 days after, in supernatant concentration of suspension be 80mg/L when added according to volume ratio 0.5%
The bacteria suspension I prepared in the embodiment 1 of CN201410731296.4, while every 2 batches according to promoter concentration in sewage
25mg/L adds microbial growth promoters B- I.The ammonia nitrogen concentration intake after 6 days reaches 700mg/L, in 12h ammonia nitrogen removal frank
Up to 65%, it is changed to continous way operation at this time, while adding according to volume ratio 0.5% and to be made in the embodiment 1 of CN201410731296.4
Standby bacteria suspension II, while microbial growth promoters B- I was added according to promoter concentration 25mg/L in sewage every 2 days.Control
Hydraulic detention time processed is 14h, pH value 8.3, dissolved oxygen concentration 0.5-2.0mg/L, carbon-nitrogen mass ratio 5:1.Work as ammonia nitrogen removal
When rate is greater than 90%, continue to improve influent ammonium concentration, the amplitude improved every time is 100mg/L, when influent ammonium concentration is
When 600mg/L, ammonia nitrogen, total nitrogen and COD removal rate reach 95% or more, and the quick start of ends with system, takes time altogether at this time
18 days.
Embodiment 2
Reactor is carried out as test water for the waste water of 800mg/L using autogamy ammonia nitrogen concentration for 300mg/L, COD concentration
Short-cut nitrification and denitrification start test, pH control is controlled in 8.0, temperature in 30 DEG C, dissolved oxygen concentration in start-up course and is
1.5-3.0mg/L carbon-nitrogen mass ratio 3:1.Adaptability is carried out first, in accordance with 30% inoculation of activated-sludge of handled wastewater volume to tame and docile
Change, while adding microbial growth promoters A- II according to promoter concentration 20mg/L in sewage daily, starting short distance nitration is anti-
The Nitrification.First intermittent duty, reaction stop ventilation afterwards for 24 hours, supernatant are discharged after natural subsidence, leaves activated sludge,
Then new ammonia-containing water is filled into reactor.The ammonia nitrogen concentration that water inlet is improved when ammonia nitrogen removal frank is greater than 90%, mentions every time
High amplitude is that 100mg/L is added when concentration of suspension is 80mg/L in supernatant according to volume ratio 0.8% after operation 3 days
The bacteria suspension I prepared in the embodiment 1 of CN201410731296.4, while every 4 batches according to promoter concentration in sewage
30mg/L adds microbial growth promoters B- II.The ammonia nitrogen concentration intake after 6 days reaches 700mg/L, in 12h ammonia nitrogen removal frank
Up to 65%, it is changed to continous way operation at this time, while adding according to volume ratio 0.8% and to be made in the embodiment 1 of CN201410731296.4
Standby bacteria suspension II, while microbial growth promoters B- II was added according to promoter concentration 30mg/L in sewage every 3 days.Control
Hydraulic detention time processed is 14h, pH value 8.5, dissolved oxygen concentration 0.5-2.0mg/L, carbon-nitrogen mass ratio 4:1.Work as ammonia nitrogen removal
When rate is greater than 90%, continue to improve influent ammonium concentration, the amplitude improved every time is 100mg/L, when influent ammonium concentration is
When 600mg/L, ammonia nitrogen, total nitrogen and COD removal rate reach 95% or more, and the quick start of ends with system, takes time altogether at this time
20 days.
Comparative example 1
The high ammonia-containing water of certain catalyst plant is diluted to 250mg/L as reactor to intake, implements the anti-nitre of short distance nitration
The quick start of change.PH control is controlled 7.8, by temperature at 30 DEG C, dissolved oxygen concentration 3.0-5.0mg/L in start-up course,
Carbon-nitrogen mass ratio is 3:1.Adaptability domestication is carried out first, in accordance with 40% inoculation of activated-sludge of handled wastewater volume.
(1) only with intermittent water inflow mode of operation, reaction stops ventilation afterwards for 24 hours, removes supernatant after natural subsidence, leaves
Then thallus fills into new ammonia-containing water into reactor, while every 2 batches according to promoter concentration 15mg/L in sewage
Add microbial growth promoters A- III.The extension rate that raw wastewater is reduced when ammonia nitrogen removal frank is greater than 90% makes water inlet
Ammonia nitrogen concentration improves, and the amplitude improved every time is 50mg/L；After operation 6 days, pressed when concentration of suspension is 100mg/L in supernatant
The bacteria suspension I and II in the embodiment 1 of CN201410731296.4 is added according to volume ratio 0.4%, while every 4 days according to sewage
Middle promoter concentration 25mg/L adds microbial growth promoters B- III.After operation 60 days, influent ammonium concentration is just increased to
700mg/L, and ammonia nitrogen removal frank only has 80%, nitrogen removal rate there was only 75%.
(2) only with continuum micromeehanics mode of operation, the embodiment 1 of CN201410731296.4 is added according to volume ratio 0.4%
In bacteria suspension I and II, while adding microbial growth promoters B- according to promoter concentration 25mg/L in sewage every 3 days
Ⅱ.Control hydraulic detention time is 17.5h, pH value 8.5, dissolved oxygen concentration 1.0-2.5mg/L, carbon-nitrogen mass ratio 3:1.Work as ammonia
When nitrogen removal efficiency is greater than 90%, the extension rate of ammonia-containing water is gradually decreased, so that the amplitude that ammonia nitrogen concentration improves every time is
50mg/L；Until raw wastewater is when ammonia nitrogen concentration therein is 600mg/L after dilution, the quick start of ends with system at this time,
It takes time altogether 80 days, and ammonia nitrogen removal frank only has 65%, nitrogen removal rate there was only 70%.
(3) intermittent water inflow mode of operation is first used, other conditions are same (1), while daily according to promoter concentration in sewage
15mg/L adds growth promoter A- III, and the ammonia nitrogen concentration intake after 6 days reaches 700mg/L, in 12h ammonia nitrogen removal frank up to 60%,
It is changed to continous way operation at this time, other conditions are with (2), every 2 days according to promoter concentration 25mg/L in sewage when continuous operation
Add growth promoter B- III, until raw wastewater is when ammonia nitrogen concentration therein is 600mg/L after dilution, ammonia nitrogen, total nitrogen and
COD removal rate reaches 95% or more, at this time the quick start of ends with system, takes time altogether 20 days.
Different starting effects are shown in Table 1.
Table 1 adds the different starting effect of the identical water intake mode of microorganism formulation
Seen from table 1, the present invention takes the mode that first intermittently continuum micromeehanics combine again to cooperate the case where adding promotor
Under the quick start of system may be implemented.
Comparative example 2
Processing takes identical treatment process and process conditions with the identical waste water of embodiment 1, in interval and continuous process
In the process in the case where all no growth growth promoter using microorganism, need to add according to volume ratio 5%
The bacteria suspension prepared in the embodiment 1 of CN201410731296.4 can be only achieved effect similarly to Example 1.
Claims (14)
1. a kind of quick start method of waste water treatment system short-cut nitrification and denitrification, it is characterised in that including following content:
(1) it is inoculated with waste water treatment plant's aerobic activated sludge first in bioreactor, and adds microbial growth promoters A；
The growth promoter A includes metal salt, polyamines and inorganic acid azanol, and the metal salt is by calcium salt, mantoquita, magnesium salts
And/or ferrous salt composition；
(2) first two kinds of modes of operation of continuum micromeehanics are then used to carry out system starting using intermittent water inflow；
(3) every batch of secondary response for 24 hours, improves influent ammonium concentration when ammonia nitrogen removal frank is greater than 90% when intermittent duty, improves every time
Amplitude is 50-100mg/L, stops adding growth promoter A when concentration of suspension is lower than 100mg/L in water outlet, changes throwing denitrogenation
Microbial inoculum and microbial growth promoters B, the denitrogenation microbial inoculum by arthrobacterium (Arthrobacter creatinolyticus)
FDN-1, Shui Shi Flavobacterium (Flavobacterium mizutaii) FDN-2, Paracoccus denitrificans (Paracoccus denitrificans) DN-3 and Methylobacterium (Methylobacterium phyllosphaerae) SDN-3 composition, it is described
Growth promoter B includes metal salt, polyamines and organic acid azanol, the metal salt by calcium salt, mantoquita, magnesium salts and/or
Ferrous salt composition；
(4) when influent ammonium concentration reaches 400-700mg/L, and in 12h ammonia nitrogen removal frank up to 60% or more when be changed to continuously into
Water mode of operation, and add denitrogenation microbial inoculum and growth promoter B；
(5) under conditions of keeping 70% or more nitrogen removal rate, ammonia nitrogen in waste water concentration is gradually increased, until influent ammonium concentration
Up to 500-1000mg/L, when nitrogen removal rate is up to 80% or more in system, the start-up course of short-cut nitrification and denitrification is completed.
2. according to the method described in claim 1, it is characterized by: metal salt is 40-100 weight in the growth promoter A
Part, polyamines are 5-30 parts by weight, and inorganic acid azanol is 0.5-15 parts by weight.
3. method according to claim 1 or 2, it is characterised in that: the inorganic acid azanol is hydroxylamine hydrochloride, hydroxyl sulfate
Or one or more of phosphatic hydroxylamine, content are 2-10 parts by weight.
4. according to the method described in claim 1, it is characterized by: metal salt is 40-100 weight in the growth promoter B
Part, polyamines are 5-30 parts by weight, and organic acid azanol is 0.5-15 parts by weight.
5. method according to claim 1 or 4, it is characterised in that: the organic acid azanol is formic acid azanol, acetic acid hydroxyl
The mixture of amine or both, content are 2-10 parts by weight.
6. method according to claim 1,2 or 4, it is characterised in that: in the growth promoter A and B, metal salt is calcium
Salt, magnesium salts and mantoquita, wherein Ca2+、Mg2+And Cu2+Molar ratio be (5-15): (5-25): (0.5-5)；Either calcium salt, Asia
Molysite and mantoquita, wherein Ca2+、Fe2+And Cu2+Molar ratio be (5-15): (1-8): (0.5-5)；Either calcium salt, magnesium salts, Asia
Molysite and mantoquita, wherein Ca2+、Mg2+、Fe2+And Cu2+Molar ratio be (5-15): (5-25): (1-8): (0.5-5).
7. method according to claim 1,2 or 4, it is characterised in that: in the growth promoter A and B, calcium salt CaSO4
Or CaCl2, magnesium salts MgSO4Or MgCl2, ferrous salt FeSO4Or FeCl2, mantoquita CuSO4Or CuCl2。
8. method according to claim 1,2 or 4, it is characterised in that: in the growth promoter A and B, polyamines
For the mixture of spermine, spermidine or both.
9. according to the method described in claim 1, it is characterized by: the aerobic activated sludge inoculum concentration of the inoculation is handled
The 10%-50% of wastewater volume；The bored exposure processing of 12-24h is taken after inoculation of activated-sludge, is controlled dissolved oxygen concentration during bored exposure and is existed
3.0-5.0mg/L being eluriated to activated sludge.
10. according to the method described in claim 1, it is characterized by: the intermittent water inflow mode of operation, the initial ammonia of water inlet
Nitrogen concentration is 100-200mg/L, and COD concentration is 300-600mg/L；Controlling treatment temperature is 20-40 DEG C, pH value 7.8-8.2,
Dissolved oxygen concentration is 1.0-5.0mg/L, carbon-nitrogen mass ratio 2:1-4:1.
11. according to claim 1 or method described in 10, it is characterised in that: intermittent water inflow mode of operation takes batch to change water, often
It adds growth promoter A according to promoter concentration 10-40mg/L in sewage；When the concentration of suspension in water outlet is lower than 100mg/
Denitrogenation microbial inoculum and microbial growth promoters B are added when L, add a microorganism growth every 2-5 batch when batch changes water
Accelerant B, dosage are added according to promoter concentration 10-40mg/L in sewage disposal system.
12. according to the method described in claim 1, it is characterized by: when the hydraulic retention of the continuum micromeehanics mode of operation
Between be set as 14-24h, control pH value is in 8.2-8.5, and temperature is 20-40 DEG C, dissolved oxygen concentration 0.2-4.0mg/L, carbon nitrogen quality
Than for 3:1-10:1.
13. according to claim 1 or method described in 12, it is characterised in that: added primary micro- life when continuous operation every 2-5 days
Object growth promoter B, dosage are added according to promoter concentration 10-40mg/L in sewage disposal system.
14. according to the method described in claim 1, it is characterized by: the bacterium that the denitrogenation microbial inoculum is added in intermittent water inflow
Body volume ratio is 1:2:(8-15): (8-15), the thallus volume ratio that whens continuum micromeehanics adds are (8-15): (8-15): 2:1, are thrown
Dosage is added according to the 0.1%-1% of handled wastewater volume.
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