CN109179649A - A method of rapid induction is enriched with anaerobic ammonia oxidizing bacteria from nitrosation sludge - Google Patents
A method of rapid induction is enriched with anaerobic ammonia oxidizing bacteria from nitrosation sludge Download PDFInfo
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- CN109179649A CN109179649A CN201811087348.3A CN201811087348A CN109179649A CN 109179649 A CN109179649 A CN 109179649A CN 201811087348 A CN201811087348 A CN 201811087348A CN 109179649 A CN109179649 A CN 109179649A
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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
- C02F3/28—Anaerobic digestion 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
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Abstract
The method of the invention discloses a kind of from nitrosation sludge rapid induction enrichment anaerobic ammonia oxidizing bacteria, by nano oxidized copper concentration in adjusting reactor, to realize, rapid induction is enriched with Anammox in nitrosation sludge, steps are as follows: the nitrosation sludge (nitrite accumulation rate > 99%) for taking property stable first, which is placed in MBR reactor, to be run 7 days, then 1g/L nano cupric oxide stock solution is added into reactor, so that reactor is aoxidized copper concentration 1g/L, runs 12-15 days；Increase the volume that the nano cupric oxide stock solution of reactor is added daily, making the concentration of reactor is respectively 5g/L, 10g/L, each operation 15 days；Finally stop addition nano cupric oxide, stable operation 15 days or more, successfully realizes that anaerobic ammonia oxidizing bacteria induces successfully.The present invention solves the problems, such as the anaerobic ammonoxidation bacterium concentrating in nitrosation sludge, provides method for the enrichment of anaerobic ammonia oxidizing bacteria and the quick start of anaerobic ammonia oxidation process.
Description
Technical field
The invention belongs to the energy-saving process fields of sewage, and in particular to one kind rapid induction from nitrosation sludge is enriched with
The method of anaerobic ammonia oxidizing bacteria.
Background technique
With the fast development of China's economy and society, the living standard of the people is continuously improved, the demand day to water resource
Benefit increases, while the discharge amount of sewage is also continuously increased, and thereby results in the scarcity of water resource extreme, water pollution aggravation gradually at
An important factor for restrict Chinese society economic development.Wherein ammonia nitrogen is one of the main project of China's water quality monitoring, Chinese Ministry of Environmental Protection
National 229.9 ten thousand tons of total emission volumn of the ammonia nitrogen in 2015 announced.Ammonia nitrogen in water body is not only major pollutants, and is also to draw
Play the main arch-criminal of water eutrophication.But still traditional nitrification that the sewage treatment plant of most domestic uses at present is anti-
Denitrification process is nitrified, which not only needs to consume a large amount of aeration, but also needs to add a large amount of carbon sources, and not meeting energy conservation can
Continue the theory of sewage treatment.Therefore, people begin to focus on the anaerobic ammonia oxidation process for not needing additional carbon, and the technique is first
It is under aerobic condition, aerobic ammonia-oxidizing bacteria is sub- nitrogen the mineralized nitrogen of half, and and then anaerobic ammonia oxidizing bacteria is remaining
Ammonia nitrogen and the sub- nitrogen of generation, which directly react, generates nitrogen, which has reaction road compared with traditional nitration denitrification technique
Therefore the advantages that diameter is short, the aeration of 60% or more saving, 100% carbon source, nitric efficiency is high develops anaerobic ammonia oxidation process
There is very important meaning to wastewater treatment.
However since the functional microorganism anaerobic ammonia oxidizing bacteria growth rate of the technique is slower, vulnerable to such environmental effects
Reason, so that the starting time of autotrophic denitrification technique is long, and the place of related anaerobic ammonia oxidation process research and application both at home and abroad
Managing object is mainly the high temperature high ammonia-nitrogen wastewater such as sludge digestion supernatant and landfill leachate, and in other kinds of sewage
Treatment process, how fast enriching anaerobic ammonia oxidizing bacteria is more difficult, but for the first step of autotrophic denitrification technique reaction-Asia
Nitrifying process starting is relatively easy.Therefore, how from nitrosation sludge rapid induction be enriched with anaerobic ammonia oxidizing bacteria, not only to from
The further application for supporting denitrification process has very importantly meaning, and also has to the development of sustainable sewage treatment theory
Very positive impetus.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides one kind rapid induction from nitrosation sludge and is enriched with anaerobism
The method of ammonia oxidation bacteria.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of method of the enrichment of the rapid induction from nitrosation sludge anaerobic ammonia oxidizing bacteria provided by the present invention, is normal
Under the conditions of temperature, practical water inlet is simulated with artificial distribution, experimental rig as shown in Figure 1, reactor uses the water intake mode of upward flow,
It intakes from bottom, flow of inlet water is controlled by peristaltic pump, reactor water outlet is extracted out by water outlet peristaltic pump by membrane module, compacted by being discharged
Dynamic pump control water flow.It is mainly realized in nitrosation sludge by nano oxidized copper concentration in adjusting reactor in experiment
Rapid induction is enriched with Anammox, the specific steps are as follows:
A method of rapid induction is enriched with anaerobic ammonia oxidizing bacteria from nitrosation sludge, it is characterised in that:
(1) the nitrosation sludge that property is stable is taken, the nitrite accumulation rate of the nitrosation sludge is placed in 99% or more
In MBR reactor (MBR), preparation ammonia nitrogen concentration is 200mg/L, and PH is the water inlet of 7.5-8.5, is 0.1-0.3mg/L, temperature in DO
Degree carries out cycle experimental three times under conditions of being 20-27.5 DEG C, measures ammonia nitrogen concentration and reaction in period whole story water sampling respectively
Time t, results are averaged three times, and measures nitrosation activity PNA according to the following formula:
(2) gained PNA value is calculated according to step (1), the calculation method that the operation HRT, HRT of MBR is arranged is as follows:
The setting of HRT guarantees reactor water outlet Central Asia nitrogen/ammonia nitrogen ratio between 0.4-0.6；
(3) the nano oxidized copper solution of 1g/L is configured, wherein the partial size of nano cupric oxide, daily will be corresponding in 30-50nm
The stock solution of volume is added in reactor, and ultrasound laid in nano cupric oxide after 0.5 hour under the power of 40kw before addition
MBR reactor is added in liquid, wherein the volume ratio that volume and reactor is added isThis stage is added nano oxidized
The purpose of copper is to enhance oxygen transfer under low-oxygen environment, strengthens AOB activity, and nitrosation sludge is made gradually to adapt to the environment, transports
After row 12-15 days, it is discharged Central Asia nitrogen and ammonia nitrogen ratio is stablized between 1.0-1.2；
(4) increase the volume that the nano cupric oxide stock solution of reactor is added daily,It is intaking
Ammonia nitrogen concentration is 190-210mg/L, DO 0.1-0.3mg/L, and pH is run between 7.5-8.5, and induction AOB changes to AAOB,
On the one hand, the addition of CuO causes oxygen transmitting to be accelerated, and AOB is utilized, and on the other hand, nano particle provides carrier, so that
AAOB enrichment and growth, after operation 3-5 days, water outlet ammonia nitrogen and sub- nitrogen equal proportion are reduced, and water outlet total nitrogen reduces, total nitrogen elimination capacity
(NRR) reach 0.1kg/ (m3D) it more than, reruns later 7-10 days；
(5) strengthen the operation phase, continue growing the volume that the nano cupric oxide stock solution of reactor is added,It is 0.1-0.3mg/L in DO, pH is run between 7.5-8.5, and water outlet ammonia nitrogen and sub- nitrogen reduce, nitrate nitrogen
Increase, water outlet total nitrogen decline, after operation 10 days, NRR reaches 0.5kg/ (m3D) more than；
(6) stop addition nano cupric oxide, DO be 0.1-0.3mg/L, pH between 7.8-8.1 under conditions of run,
Nitrogen removal rate, which is stablized, to be stablized in 85% or more, NRR in 0.5-0.6kg/ (m3D) between, and it can guarantee stable operation 15 days
More than, anaerobic ammonia oxidizing bacteria induces successfully.
Beneficial effects of the present invention: the present invention directly starts in successful nitrosation sludge from easy culture, by artificial
Change the concentration of nano cupric oxide is added so that even year some months is needed just to can star and successfully detest originally
Anaerobic ammonium oxidation bacterium just starts success in the shorter time.The present invention tames anaerobism ammonia by the way that nano oxidized copper concentration is altered in steps
Oxidation bacteria, in 1mg/L, nano cupric oxide enhances oxygen transfer, strengthens AOB activity, and nitrosation sludge is made gradually to adapt to the ring
Border.When increasing to 5mg/L, begins to induction AOB and change to AAOB, while providing attachment carrier for AAOB, so that AAOB is rich
Collection growth.By the domestication of this concentration, AAOB has shown activity, adds the nano cupric oxide of 10mg/L later, into one
The activity for walking the AAOB strengthened, so that AAOB shows good bioactivity.Finally, nano cupric oxide is not added, AAOB
Good denitrification effect has been shown, has illustrated that Anammox flora has induced, is enriched with successfully.Not only by this process
The step of simplifying anaerobic ammonia oxidizing bacteria, for from nitrosation process rapid induction anaerobic ammonia oxidizing bacteria provide method, shorten
The enrichment of anaerobic ammonia oxidizing bacteria tames the time, while also providing new approach for the quick start of anaerobic ammonia oxidation process.
Detailed description of the invention
Fig. 1 be in the present invention in nitrosation sludge induced concentration anaerobic ammonia oxidizing bacteria operation logic figure, main includes anti-
The monitoring instruments such as Ying Chi, disengaging water pump, DO and pH.
(1) intake pool；(2) water inlet peristaltic pump；(3) mixing control system；(4) online dissolved oxygen meter；(5) online PH meter；(6)
Film；(7) mud mouth is taken；(8) flowmeter；(9) air pump；(10) it is discharged peristaltic pump.
Fig. 2 is the removal effect figure of reactor operation ammonia nitrogen in the present invention, wherein ammonia nitrogen removal frank (%)=(water inlet ammonia
Nitrogen-water outlet ammonia nitrogen) * 100/ influent ammonia nitrogen, ammonia nitrogen removal load (kg/ (m3D))=(influent ammonia nitrogen-water outlet ammonia nitrogen) * 24/
(HRT*1000)。
Fig. 3 is the removal effect figure that reactor runs sub- nitrogen in the present invention, Central Asia nitrogen accumulation rate (%)=(water inlet Asia
Nitrogen-water outlet Asia nitrogen) * 100/ it is discharged sub- nitrogen.
Fig. 4 is the removal effect figure of reactor operation total nitrogen in the present invention, wherein nitrogen removal rate (%)=(water inlet is total
Nitrogen-water outlet total nitrogen) * 100/ water inlet total nitrogen, total nitrogen elimination capacity (kg/ (m3D))=(water inlet total nitrogen-water outlet total nitrogen) * 24/
(HRT*1000)。
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described, but protection scope of the present invention is not limited to
This.
Reactor of the present invention is membrane bioreactor, and effective volume 5L adopts to guarantee that muddy water sufficiently reacts
It with mechanical stirring, while being aerated with air pump, water intake mode is bottom water inlet, aspirates inflow and outflow by peristaltic pump.This experiment
Actual waste water is simulated with artificial distribution.
The method of present invention rapid induction enrichment anaerobic ammonia oxidizing bacteria in nitrosation sludge system, the steps include: opening
It moves in successful nitrosation system, firstly, under normal circumstances, using artificial distribution as matrix, guaranteeing certain water inlet and going out
Water allows nitrosation stable operation 5-6d, after stable operation for a period of time, pass through the nano oxygen of the addition various concentration into reactor
Change copper particle, other conditions remain unchanged, and after the experiment by several concentration, find under the action of nano cupric oxide, reaction
Total nitrogen removal and ammonia nitrogen elimination capacity occur rise, under the action of nano cupric oxide, on the one hand, nanometer CuO plus
Enter to cause oxygen transmitting to accelerate, AOB is utilized, and on the other hand, nano particle provides carrier, so that AAOB enrichment and growth, most
Successfully domestication is enriched with successfully anaerobic ammonia oxidizing bacteria in nitrosation sludge eventually.
Specific processing is as follows:
It is arranged in the membrane bioreactor that effective volume is 5L, the nitrosation activated sludge of stable operation is taken to be inoculated into reaction
In device.The water distribution ammonia nitrogen concentration of all stage is 190-210mg/L, and basicity concentration is 2000mg/L, and suitable micro member is added
Element, by the way of continuum micromeehanics continuous effluent, daily water distribution, while taking Inlet and outlet water.
It is 190-210mg/L in influent ammonium concentration, reactor T is 24.7 DEG C, instead after reactor is added in nitrosation sludge
Answering device pH is 8.110, and reactor DO is 0.29mg/L, is added without nano cupric oxide particle, stable operation 7d is shown in the rank of Fig. 2,3,4
Section I.Later, water distribution condition remains unchanged, and reactor T is 26.1 DEG C, and reactor pH is 7.887, and reactor DO is 0.21mg/L,
The nano cupric oxide of 1mg/L is added, runs 15d, sees the stage of Fig. 2,3,4 II.Then the ammonia nitrogen concentration in water distribution remains unchanged,
Reactor T is 27.4 DEG C, and water outlet pH is 7.955, and water outlet DO is 0.16mg/L, and 5mg/L nano cupric oxide is added, and runs 15d.See
The stage of Fig. 2,3,4 III.
It is finally 24.4 DEG C in reactor T, reactor pH is 7.867, and reactor DO is 0.16mg/L, and 10mg/L is added and receives
Rice copper oxide, runs 15d.See the stage of Fig. 2,3,4 IV.
Reactor T is 23.8 DEG C, and reactor pH is 7.838, and reactor DO is 0.16mg/L, and other conditions are constant later,
It is added without nano cupric oxide, after running 30d.Ammonia nitrogen removal frank reaches 93.58%, nitrogen removal rate 85.15%, ammonia nitrogen removal
Load is 0.6kg/ (m3D), total nitrogen elimination capacity is 0.55kg/ (m3D), the ammonia nitrogen in reactor and the sub- nitrogen of accumulation are same
When remove, it is believed that anaerobic ammonoxidation bacterium concentrating success.See the stage of Fig. 2,3,4 V.Therefore, this method is a kind of effective fast
The speed method that quickly domestication is enriched with anaerobic ammonia oxidizing bacteria from nitrosation sludge.
Claims (3)
1. a kind of method of the enrichment of the rapid induction from nitrosation sludge anaerobic ammonia oxidizing bacteria, it is characterised in that steps are as follows:
(1) the nitrosation sludge that property is stable is taken, it is raw to be placed in film 99% or more for the nitrite accumulation rate of the nitrosation sludge
In object reactor, the water inlet that ammonia nitrogen concentration is 190-210mg/L is prepared, is 7.7-8.2, DO 0.1-0.3mg/L, temperature in pH
Cycle experimental three times is carried out under conditions of being 20-27.5 DEG C, respectively in period whole story water sampling measurement ammonia nitrogen concentration and reaction
Between t, results are averaged three times, and according to the following formula measure nitrosation activity PNA:
(2) gained PNA value is calculated according to step (1), the calculation method that the operation HRT, HRT of MBR is arranged is as follows:
The setting of HRT guarantees reactor water outlet Central Asia nitrogen/ammonia nitrogen ratio between 0.4-0.6；
(3) the nano cupric oxide stock solution for configuring 1g/L, is added reactor for the nano cupric oxide stock solution of respective volume daily
In, wherein the addition volume of nano oxidized copper solution and the volume ratio of reactor areOperation 12-15 days
Afterwards, it is discharged Central Asia nitrogen and ammonia nitrogen ratio is stablized between 1.0-1.3；
(4) increase the volume that the nano cupric oxide stock solution of reactor is added daily, wherein the addition body of nano oxidized copper solution
Product and the volume ratio of reactor areIt is 190-210mg/L, DO 0.1-0.3mg/ in influent ammonium concentration
L, pH are run between 7.8-8.1, and after operation 3-5 days, total nitrogen elimination capacity reaches 0.1kg/ (m3D) it more than, transports again later
Row 7-10 days；
(5) strengthen the operation phase, continue growing the volume that the nano cupric oxide stock solution of reactor is added, wherein nano cupric oxide
The addition volume of solution and the volume ratio of reactor areIt is 0.1-0.3mg/L, pH 7.8-8.1 in DO
Between run, operation 10 days after, NRR reaches 0.5kg/ (m3D) more than；
(6) stop addition nano cupric oxide stock solution, DO be 0.1-0.3mg/L, pH between 7.8-8.1 under conditions of transport
Row, nitrogen removal rate, which is stablized, to be stablized in 85% or more, NRR in 0.5-0.6kg/ (m3D) between, and can stable operation 15 days with
On, anaerobic ammonia oxidizing bacteria induces successfully.
2. the method for the enrichment of the rapid induction from nitrosation sludge anaerobic ammonia oxidizing bacteria according to claim 1, feature
Be: the partial size of nano cupric oxide is 30-50nm in step (3) the nano cupric oxide stock solution.
3. the method for the enrichment of the rapid induction from nitrosation sludge anaerobic ammonia oxidizing bacteria according to claim 1, feature
Be: ultrasound, will be ultrasonic after 0.5 hour under the power of 40kw before nano cupric oxide stock solution is added in the step (3)
Nano cupric oxide stock solution afterwards is directly added into reactor.
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