CN109502746A - Sewage treatment process based on Anammox - Google Patents
Sewage treatment process based on Anammox Download PDFInfo
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- CN109502746A CN109502746A CN201811414739.1A CN201811414739A CN109502746A CN 109502746 A CN109502746 A CN 109502746A CN 201811414739 A CN201811414739 A CN 201811414739A CN 109502746 A CN109502746 A CN 109502746A
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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
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
Abstract
The present invention provides a kind of sewage treatment process based on Anammox, the following steps are included: treatment sewage is injected in the first bioreactor by the wastewater influent pipeline, it carries out partial nitrification and Anammox is handled, it is fed sequentially into next stage bioreactor by aqueduct again, Anammox step by step is carried out and handles；Simultaneously, by in the first order bioreactor to carry out strain isolation containing the preliminary sludge based on ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria, the ammonia oxidation bacteria separated is re-injected in the first order bioreactor, converge with raw sewage to be processed, the mud containing the anaerobic ammonia oxidizing bacteria is injected into N grades of bioreactors；The final stage sludge for handling deposition through Anammox in N grades of bioreactors is subjected to bacterium mud separation, the anaerobic ammonia oxidizing bacteria separated is seeded in previous stage bioreactor step by step by first pipe, the mud outlet that will be separated.
Description
Technical field
The invention belongs to technical field of sewage more particularly to a kind of sewage treatment process based on Anammox.
Background technique
A large amount of high-concentration ammonia nitrogenous wastewater is generated in industry and agricultural, exceeded become of ammonia nitrogen influences China's surface water water environment
The primary index of quality, ammonia nitrogen waste water processing have caused the attention of global environment protection field.Ammonia nitrogen is the common pollution of water pollution
Object, the presence of ammonia nitrogen can largely consume the oxygen in water, cause water eutrophication.In order to thoroughly administer ammonia and nitrogen pollution, it is necessary to
Cost-effective ammonia nitrogenous wastewater treatment technology especially high-concentration ammonia nitrogenous wastewater processing technique is found, is administered in ammonia and nitrogen pollution same
When it is energy-saving, avoid secondary pollution.As supervision standard is put forward higher requirements to nitrogen discharged, in advanced treatment of wastewater process
In, it has been stepped up the removing process to nitrogen.Traditional denitrification process is using nitrification-denitrification technique.Common nitrification
Process refers in aerobic situation, by the ammoxidation in water is nitrate anion using aerobic nitrifier.This process is carried out in two steps:
The first step is that the ammoxidation in water is nitrite ion by ammonia oxidation bacteria (AOB)；Second is nitrite oxidizing bacteria
It (NOB) is nitrate by nitrite-oxidizing.Denitrification refers to that under anaerobic conditions, nitrate anion is converted nitrogen by denitrifying bacterium
Process.It is general by industry as the denitrogenation technology of core using Anammox in the today for emphasizing sewage treatment recycling, energy
All over a kind of important technology for being considered as the following sewage treatment development, thus the technology is just becoming the coke of Present Global sewage treatment research and development
One of point.For the nitrification-denitrification technique that compares, short-cut nitrification and denitrification, which refers to, is producing nitrite nitration reaction control
Stage, prevent the formation of further nitrate anion；Then denitrification is carried out using denitrifying bacterium under anaerobic conditions.Therefore,
Anammox technology reduces nitrate generation phase compared to more traditional nitrification-denitrification technique in process, can subtract
Demand in few reaction to oxygen and carbon source, to realize energy-saving target.
Anammox (Anaerobic ammonium oxidation, ANAMMOX) technique, is initially by Holland
Delft Polytechnics has developed anaerobic ammonia oxidation reactor in beginning one's study at the end of the 20th century, in 1998 for the first time, and in this century
A kind of novel wastewater biological denitrification process of just success development and application.Anammox is broadly divided into two big steps: first process
It is that ammonia nitrogen is carried out by partial nitrification (partial nitritation) using ammonia oxidizing bacteria (AOB), in this process only
There is about 55% ammonia nitrogen to need to be converted into nitrite nitrogen；Second process is Anammox (anammox), in anaerobism item
Under part, uses anaerobic ammonia oxidizing bacteria (AnAOB) using cultured water as electron acceptor, be oxidized to nitrogen N2。
Anammox technology Nitrogen Removal Mechanism process is as follows:
The partial nitrification stage (AOB bacterium)
1.32NH3+1.98O2→1.32NO2 -+1.32H++1.3H2O
The Anammox stage (anaerobic ammonia oxidizing bacteria)
NH3+1.32NO2 -+H+→0.26NO3 -+1.02N2+2H2O
Overall reaction (Deammonification)
NH3+0.85O2→0.44N2+0.11NO3 -+1.43H2O+0.14H+
Compared with traditional nitrification-denitrification denitrification process and other novel biological denitrification process, Anammox energy
The outstanding advantage shown, anaerobic ammonia oxidizing bacteria belong to autotrophic bacterium, are not necessarily to additional organic carbon source, processing operating cost reduces, special
It is other good to the water treatment effect of low C/N ratio, and secondary pollution caused by can avoid because of the adding of organic matter.And anaerobism ammonia
Oxidation only need to be by part ammonia nitrogen nitrosation, therefore the demand of oxygen is greatly lowered, and power consumption reduces.In NH4 +The nitrification of-N
In the process, the NH of every oxidation 1mol4 +- N need to consume 2mol oxygen, and in anaerobic ammonium oxidation process, the NH of every oxidation 1mol4 +-N
0.75mol oxygen is only needed, therefore compared with traditional nitration denitrification technique, the power consumption generated by oxygen consumption can be reduced
62.5%；Sludge yield reduces by 90%；It is compact-sized；High ammonia nitrogen loading；Substantially without Additional carbon sources.In recent years, right both at home and abroad
The research of anaerobic ammonia oxidation process achieves a large amount of achievements.
Although processing ammonia nitrogen waste water is detested there are many ammonia ammonia oxidation process technologies, anaerobic ammonia oxidation process exists as follows
Critical issue: (1) since anaerobic ammonia oxidizing bacteria (AnAOB, Anammox) slow growth (11 days doubling times), cell yield are low
[m(VSS)/m(NH4 +- N)=0.11g/g), it is sensitive to environmental condition, enrichment culture is more difficult.The growth rate of bacterium is low
Very slow in warm situation, generation time needs 1~2 week, and nitrifier needs 1d.So conventional vaccination sludge starts anaerobism
The ammoxidation time is up to several months to the several years.(2) ammonia oxidation bacteria (AOB) and anaerobic ammonia oxidizing bacteria (AnAOB) cannot be efficiently controlled
Growth and retention, process system fluctuation of service limits the large-scale application of anaerobic ammonia oxidation process in practical projects.
Summary of the invention
The purpose of the present invention is to provide a kind of sewage treatment process based on Anammox, it is intended to solve existing anaerobism
Anaerobic ammonoxidation bacterium concentrating, proliferation, domestication difficulty are big in ammonia oxidation process, and cannot efficiently control ammonia oxidation bacteria and anaerobism ammonia
The growth and retention of oxidation bacteria, the problem of influencing sewage treating efficiency and effect.
For achieving the above object, The technical solution adopted by the invention is as follows:
One aspect of the present invention provides the sewage treatment process based on Anammox, comprising the following steps:
Sewage-treatment plant is provided, the sewage-treatment plant includes multi-stage biological reactor, anti-with the multi-stage biological
It answers device to be connected to and is used to input the sewage water inlet pipe for the treatment of sewage, and be connected to and be used for the multi-stage biological reactor
The clear water outlet pipe of processed water sample is discharged；The multi-stage biological reactor includes at least the be connected to the sewage water inlet pipe
Level-one bioreactor and N grades of bioreactors being connected to the clear water outlet pipe, the first order bioreactor and
The N-2 bioreactor that aqueduct is sequentially connected in series is provided between the N grades of bioreactors；It is described multistage raw
Each bioreactor of object reactor is respectively set the first opening and the second opening, and the N grades of bioreactors
Second opening is connected to first opening of the N-1 grades of bioreactors by first pipe；Wherein, the N
More than or equal to 2；
Treatment sewage is injected in first bioreactor by the wastewater influent pipeline, carries out part nitrous
Change and handled with Anammox, then the water body after the first bioreactor for treatment is implanted sequentially the by the aqueduct
In two stage biological reactor ... the N-1 grades of bioreactors, the N grades of bioreactors, anaerobism ammonia oxygen step by step is carried out
Change processing；Meanwhile it is the primary containing ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria deposited in the first order bioreactor is dirty
Mud carries out strain isolation, and the part based on ammonia oxidation bacteria separated is re-injected in first bioreactor,
The N grades of bioreactors will be injected containing the part based on the anaerobic ammonia oxidizing bacteria；By the N grades of bioreactors
The middle final stage sludge for handling deposition through Anammox carries out bacterium mud separation, will separate based on anaerobic ammonia oxidizing bacteria
Part is seeded in previous stage bioreactor step by step by the first pipe, the mud outlet that will be separated.
Sewage treatment process provided by the invention based on Anammox, setting multi-stage biological reactor is connected, multistage
Water body is conveyed by aqueduct between bioreactor, and be arranged in multi-stage biological reactor first pipe it is reverse (with into
Water is contrary) carrying out ammonia oxidation bacteria (AOB) and anaerobic ammonia oxidizing bacteria (AnAOB), enrichment, proliferation, expansion are cultivated step by step, thus
Realize the quick start and stable operation of anaerobism ammonia oxygen system.Specifically, on the one hand, will be passed through in the first order bioreactor
Partial nitrification and the preliminary sludge of Anammox processing deposition carry out strain isolation, again by the ammonia oxidation bacteria separated
It injects in first bioreactor, carries out part nitration reaction and assimilation proliferation growth；The Anammox will be contained
The mud of bacterium is transported to the N grades of bioreactors as seed.On the other hand, the anaerobism separated from final stage sludge
Ammonia oxidation bacteria is conveyed and is inoculated with into N-1 grades of bioreactors, and the anaerobic ammonia oxidizing bacteria of N-1 grades of bioreactors is through reverse defeated
It send and is inoculated in N-2 grades of bioreactors, still secondary class is pushed into first order bioreactor.Anaerobic ammonia oxidizing bacteria seed passes through
Adverse current is inoculated with step by step, has not only tamed the environmental suitability of anaerobic ammonia oxidizing bacteria, but also can make full use of the nutrition bar of each stage reactor
Part realizes enrichment, proliferation, expands culture；Meanwhile sludge is discharged in final stage sludge, and system is discharged with mud in the competitive bacterium such as NOB, OHO
System, it is suppressed that the growth and breeding of the competitiveness miscellaneous bacteria such as NOB has effectively played the efficient denitrification effect of anaerobic ammonia oxidizing bacteria.
The present invention by separating twice, efficiently realize the retention of ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria, isolate and purify,
Enrichment culture greatly enhances the anaerobic ammonia oxidizing bacteria resistance after taming, so that the sewage based on Anammox
Treatment process system run all right；Competitive bacterium NOB is eliminated reaction system simultaneously, makes the abundance of anaerobic ammonoxidation bacterium concentrating
It is big to improve, 50~60% are about improved, the starting time of anaerobism ammonia reactor can substantially be shortened 1/3-1/2, about 60~90d.This
Outside, by the technique, the influence of waste water Poisoning substance can be overcome, adapt to low temperature environment etc..
Detailed description of the invention
Fig. 1 is sewage-treatment plant schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention is not intended to limit the present invention.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more of the features.In the description of the present invention,
The meaning of " plurality " is two or more, unless otherwise specifically defined.
In conjunction with Fig. 1, the embodiment of the invention provides a kind of sewage treatment process based on Anammox, including following step
It is rapid:
Sewage-treatment plant is provided, the sewage-treatment plant includes multi-stage biological reactor 1, with multi-stage biological reactor
1 connection and the sewage water inlet pipe 2 for inputting treatment sewage, and be connected to multi-stage biological reactor 1 and be used to be discharged
The clear water outlet pipe 3 of processed water sample；Multi-stage biological reactor 1 includes at least the first order biology being connected to sewage water inlet pipe 2
Reactor and N grades of bioreactors being connected to clear water outlet pipe 3, the first order bioreactor and the N grades of lifes
The N-2 bioreactor that aqueduct 6 is sequentially connected in series is provided between object reactor；Multi-stage biological reactor 1 it is every
The first opening and the second opening, and second opening of the N grades of bioreactors is respectively set in one bioreactor
It is connected to first opening of the N-1 grades of bioreactors by first pipe 7；Wherein, the N is more than or equal to 2；
Treatment sewage is injected in first bioreactor by sewage water inlet pipe 2, carries out partial nitrification
It is handled with Anammox, then the water body after the first bioreactor for treatment is implanted sequentially the second level by aqueduct 6
In bioreactor ... the N-1 grades of bioreactors, the N grades of bioreactors, carry out at Anammox step by step
Reason；Meanwhile the preliminary sludge in the first order bioreactor containing ammoxidation is subjected to strain isolation, by what is separated
Part based on ammonia oxidation bacteria re-injects in first bioreactor, will be containing described based on anaerobic ammonia oxidizing bacteria
Part inject the N grades of bioreactors；The end of deposition will be handled in the N grades of bioreactors through Anammox
Grade sludge carries out bacterium mud separation, and the anaerobic ammonia oxidizing bacteria separated is seeded to previous stage biology by first pipe 7 step by step
In reactor, mud outlet that will separate.
Sewage treatment process provided in an embodiment of the present invention based on Anammox, setting multi-stage biological reactor 1 are gone here and there
Join, water body is conveyed by aqueduct between multi-stage biological reactor, and setting first pipe 7 is inverse in multi-stage biological reactor
Be enriched with step by step to (contrary with intaking) progress ammonia oxidation bacteria (ammonia oxidation bacteria) and anaerobic ammonia oxidizing bacteria (anaerobic ammonia oxidizing bacteria),
Proliferation expands culture, to realize the quick start and stable operation of anaerobism ammonia oxygen system.Specifically, on the one hand, by described
Preliminary sludge through partial nitrification and anaerobism ammonia treatment in level-one bioreactor carries out strain isolation, the ammonia that will be separated
Oxidation bacteria re-injects in first bioreactor, carries out nitration reaction and assimilation proliferation growth；The anaerobism will be contained
The mud that sinks to the bottom of ammonia oxidation bacteria is transported to the N grades of bioreactors as seed.On the other hand, it is separated from final stage sludge
Anaerobic ammonia oxidizing bacteria out is conveyed and is inoculated with into N-1 grades of bioreactors, the Anammox of N-1 grades of bioreactors
Bacterium is inversely conveyed and is inoculated in N-2 grades of bioreactors, and still secondary class is pushed into first order bioreactor.Anammox
Strain is inoculated with step by step by adverse current, that is, has tamed the environmental suitability of anaerobic ammonia oxidizing bacteria, and can make full use of each order reaction
The nutritional condition of device realizes enrichment, proliferation, expands culture；Meanwhile sludge is discharged in final stage sludge, by the competitive bacterium such as NOB, OHO
With mud discharge system, it is suppressed that the growth and breeding of the competitiveness miscellaneous bacteria such as NOB has effectively played the efficient de- of anaerobic ammonia oxidizing bacteria
Nitrogen effect.
The embodiment of the present invention efficiently realizes the retention of ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria, divides by separating twice
From purifying, enrichment culture, greatly enhance the anaerobic ammonia oxidizing bacteria resistance after taming, so that being based on Anammox
Sewage treatment process system run all right；Competitive bacterium NOB is eliminated reaction system simultaneously, makes anaerobic ammonoxidation bacterium concentrating
The big raising of abundance, about improve 50~60%, the starting time of anaerobism ammonia reactor can substantially shorten to 1/3-1/2, about 60~
90d.In addition, the influence of waste water Poisoning substance can be overcome by the technique, low temperature environment etc. is adapted to.
Anammox is broadly divided into two big steps: first process is that ammonia nitrogen is carried out part nitrous using ammonia oxidizing bacteria
Change；Second process is to use anaerobic ammonia oxidizing bacteria using cultured water as electron acceptor under anaerobic, is oxidized to nitrogen
N2, complete Anammox.In the embodiment of the present invention, using the sewage-treatment plant for being provided with multi-stage biological reactor 1
Ammoxidation is synchronized to treatment sewage and Anammox is handled.
Specifically, the sewage-treatment plant integrally includes multi-stage biological reactor 1, with 1 both ends of multi-stage biological reactor
It is respectively communicated with sewage water inlet pipe 2 and clear water outlet pipe 3.Wherein, sewage water inlet pipe 2 is used to treatment sewage being delivered to multistage life
Ammonia nitriding processing is carried out in object reactor 1；And clear water outlet pipe 3 then for will through 1 ammonia nitriding of multi-stage biological reactor processing after
Clear water output.
In some embodiments, one group of sewage water inlet pipe 2 can be set in multi-stage biological reactor 1.In some embodiments,
One group of clear water outlet pipe 3 can be set in multi-stage biological reactor 1.In some embodiments, multi-stage biological reactor 1 can be set
Two groups or more sewage water inlet pipe 2.In some embodiments, multi-stage biological reactor 1 can be set two groups or two groups
Above clear water outlet pipe 3.
Multi-stage biological reactor 1 is Anaerobic Sequencing Bath Reactor (ASBR) or UASB (upflow anaerobic sludge blanket reactor)
With the mixing of IFAS (biomembrane-activated sludge combination process, Integrated Fixed film Activated Sludge)
Reactor, including at least the first order bioreactor being connected to sewage water inlet pipe 2 and N grades be connected to clear water outlet pipe 3
Bioreactor, be provided between the first order bioreactor and the N grades of bioreactors aqueduct 6 according to
N-2 bioreactor of secondary concatenation.The treatment sewage is delivered to the first order bioreactor through sewage water inlet pipe 2
In, it is exported through 1 Anammox of multi-stage biological reactor treated clear water by the N grades of bioreactors.
In a particular embodiment, the condition of the processing are as follows: temperature is 20 DEG C~40 DEG C, pH is 7~8.5.Specific
In embodiment, the condition of the processing of Anammox step by step are as follows: in the anaerobism that temperature is 25 DEG C~35 DEG C, pH is 7.3~7.5
Anammox processing step by step is carried out under environment.
In the embodiment of the present invention, the N is more than or equal to 2, theoretically, the bioreactor for Anammox processing
Quantity does not limit explicitly, but when the quantity of bioreactor is excessive, does not obviously help raising clean effect not only,
And detersive efficiency can be reduced, increase energy consumption and production cost.
In a preferred embodiment, the value range of the N meets: 2≤N≤5, i.e. multi-stage biological reactor 1 include 2~5
A bioreactor of connecting for partial nitrification and Anammox synchronization process is passing through following reverse anaerobism as a result,
After ammoxidation processing, excellent treatment effect is obtained.
Due to anaerobic ammonia oxidizing bacteria slow growth (11 days doubling times), the low [m (VSS)/m (NH of cell yield4 +- N)=
0.11g/g), sensitive to environmental condition, enrichment culture is more difficult；And ammonia cannot be efficiently controlled in anaerobic ammonium oxidation process
The growth and retention of oxidation bacteria (ammonia oxidation bacteria) and anaerobic ammonia oxidizing bacteria (anaerobic ammonia oxidizing bacteria), process system fluctuation of service,
Limit the large-scale application of anaerobic ammonia oxidation process in practical projects.In consideration of it, in the embodiment of the present invention, it is multistage in setting
On the basis of bioreactor 1 is concatenated, reverse progress anaerobic ammonia oxidizing bacteria (contrary with intaking) is enriched with step by step, is proliferated, expands
Big culture, to realize the quick start and stable operation of anaerobism ammonia oxygen system.
Firstly, in the design of the sewage-treatment plant, in each bioreactor point of multi-stage biological reactor 1
Not She Zhi the first opening and the second opening, and second opening of the N grades of bioreactors and described N-1 grade it is biological
First opening of reactor is connected to by first pipe 7.
On this basis, it in terms of the technological angle of the Anammox, will be passed through in the first order bioreactor
Partial nitrification and the preliminary sludge of Anammox processing deposition carry out strain isolation, are with ammonia oxidation bacteria by what is separated
Main part re-injects in first bioreactor, will inject institute containing the part based on anaerobic ammonia oxidizing bacteria
State N grades of bioreactors；The final stage sludge for handling deposition through Anammox in the N grades of bioreactors is subjected to bacterium
The anaerobic ammonia oxidizing bacteria separated is seeded in previous stage bioreactor by mud separation step by step by first pipe 7.
The ammonia oxidation bacteria in the preliminary sludge returns to enrichment in first order bioreactor, proliferation, expansion through separation as a result,
Big culture, the mud for containing the anaerobic ammonia oxidizing bacteria are transported to the N grades of bioreactors as seed, due to containing
The content for stating other bacterium in the mud of anaerobic ammonia oxidizing bacteria is lower, therefore, can effectively mitigate other bacterium to anaerobic ammonia oxidizing bacteria
Growth inhibition effect.Meanwhile the anaerobic ammonia oxidizing bacteria separated from final stage sludge is conveyed and is inoculated with into N-1 grades of biologies
The anaerobic ammonia oxidizing bacteria of reactor, N-1 grades of bioreactors is inversely conveyed and is inoculated in N-2 grades of bioreactors, according to
So time class is pushed into first order bioreactor.Anaerobic ammonia oxidizing bacteria seed is inoculated with step by step by adverse current, has both tamed anaerobism ammonia oxygen
Change the environmental suitability of bacterium, and the nutritional condition of each stage reactor can be made full use of, realizes enrichment, proliferation, expands culture；Together
When, sludge is discharged in final stage sludge, by the competitive bacterium such as NOB, OHO with mud discharge system, it is suppressed that the competitiveness miscellaneous bacteria such as NOB, OHO
Growth and breeding, effectively played anaerobic ammonia oxidizing bacteria efficient denitrification effect.
In preferred embodiment, the top of the bioreactor, the second opening setting is arranged in first opening
In the lower part of the bioreactor.After the anaerobic ammonia oxidizing bacteria seed in rear stage bioreactor is deposited with mud as a result, from
Bottom discharge is put by the top of previous stage bioreactor, not only contributes to the abundant extraction of anaerobic ammonia oxidizing bacteria seed,
Guarantee the concentration of the anaerobic ammonia oxidizing bacteria in bioreactor, and it is uniform in staying water to be conducive to anaerobic ammonia oxidizing bacteria
Disperse and be enriched with, be proliferated, to improve the sewage treatment process system run all right based on Anammox.Further preferably
, the first pipe 7 between adjacent biological reactor is provided with pressure pump (not marking in figure), to promote the anaerobism ammonia oxygen
Change strain to be delivered in previous stage bioreactor.
In some embodiments, the sewage-treatment plant is additionally provided with the first cyclone separator 4, the preliminary sludge warp
First cyclone separator 4 realizes strain isolation.Preferably, the first cyclone separator 4 is respectively arranged with and the first order biology
The second pipe 8 that reactor communicates, the third pipeline 9 communicated with sewage water inlet pipe 2 are communicated with the N grades of bioreactors
The 4th pipeline 10, wherein the preliminary sludge is drained in the first cyclone separator 4 through second pipe 8；Through the first eddy flow point
Sewage water inlet pipe 2 is injected by third pipeline 9 from the ammonia oxidation bacteria that device 4 is separated, is converged described in injection with treatment sewage
First order bioreactor；The mud containing the anaerobic ammonia oxidizing bacteria passes through the 4th pipe after the separation of the first cyclone separator 4
Road 10 injects the N grades of bioreactors.The strain isolation realized in preliminary sludge with architecture is automated as a result,.Into
One step is preferred, second open communication of second pipe 8 and the first order bioreactor.
In some embodiments, for connecting the pipe of the N grades of bioreactors and the N-1 grades of bioreactors
Road section is provided with the second cyclone separator 5, and the final stage sludge that the N grades of bioreactors generate is flowed out through the second opening, warp
Second cyclone separator 5 realizes bacterium mud separation.The isolated part based on anaerobic ammonia oxidizing bacteria conveys and is inoculated with into
N-1 grades of bioreactors continue to participate in Anammox reaction.Further, the second cyclone separator 5 is offered for discharging
The mud discharging mouth of mud.
By the way that cyclone is respectively set in primary reactor and final stage reactor, can efficiently separate retention, enriched ammonia oxygen
Change bacterium and anaerobic ammonia oxidizing bacteria, while reaction system is discharged in other competitive bacterium etc. after separation.
In the embodiment of the present invention, the sludge from first order bioreactor enters the first cyclonic separation with tangential direction
In device, due to the larger formation underflow of Anammox strain density, is conveyed as seed and be seeded to final stage (N grades) reactor；
Top stream (overflow) returns to first order bioreactor based on ammonia oxidation bacteria, carries out nitration reaction and assimilation proliferation growth.It comes from
The second cyclone separator is entered with tangential direction in the sludge of N grades of bioreactors, since Anammox strain density is larger
Underflow is formed, conveys and is inoculated with into N-1 grades of bioreactors, meanwhile, from overflow (top stream) conduct of the second separate hydrocyclone
Reaction system is discharged with mud in a manner of mechanically decoupled in the competitive bacterium such as NOB, OHO by sludge discharge.
In the embodiment of the present invention, treatment sewage is injected in first bioreactor by wastewater influent pipeline 2,
It carries out partial nitrification and Anammox is handled；It is injected into second level bioreactor by aqueduct 6 again.
It is illustrated combined with specific embodiments below.
Embodiment 1
A kind of sewage treatment process based on Anammox, comprising the following steps:
Sewage-treatment plant is provided:
The sewage-treatment plant includes multi-stage biological reactor, be connected to multi-stage biological reactor and for input to
The sewage water inlet pipe of sewage is handled, and is connected to and is used to be discharged the clear water water outlet of processed water sample with multi-stage biological reactor
Pipe；Multi-stage biological reactor include at least the first order bioreactor that is connected to the sewage water inlet pipe and with the Graceful
N grades of bioreactors of water pipe connection, are provided between the first order bioreactor and the N grades of bioreactors
N-2 bioreactor being sequentially connected in series by aqueduct；Each bioreactor of multi-stage biological reactor is set respectively
Set the first opening and the second opening, and second opening of the N grades of bioreactors and the N-1 grades of biological respinses
First opening of device is connected to by first pipe；Wherein, the N is more than or equal to 2.The sewage-treatment plant is additionally provided with
First cyclone, first cyclone are respectively arranged with the second pipe communicated with the first order bioreactor, with institute
State the third pipeline that sewage water inlet pipe communicates, the 4th pipeline communicated with the N grades of bioreactors.For connecting described
The first pipe section of N grades of bioreactors and the N-1 grades of bioreactors is provided with the second cyclone.
Treatment sewage is injected in first bioreactor by the wastewater influent pipeline, carries out part nitrous
Change and handled with Anammox, then the water body after the first bioreactor for treatment is implanted sequentially the by the aqueduct
In two stage biological reactor ... the N-1 grades of bioreactors, the N grades of bioreactors, anaerobism ammonia oxygen step by step is carried out
Change processing；Meanwhile it will contain at the beginning of based on ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria deposited in the first order bioreactor
Grade sludge re-injects the part based on ammonia oxidation bacteria separated through realizing strain isolation through the first cyclone separator
In first bioreactor, the N grades of biological respinses will be injected containing the part based on anaerobic ammonia oxidizing bacteria
Device；The final stage sludge of deposition will be handled in the N grades of bioreactors through Anammox, through second cyclone separator
Bacterium mud separation is carried out, the part based on anaerobic ammonia oxidizing bacteria separated is seeded to step by step by the first pipe 7
In previous stage bioreactor, mud outlet that will separate.
Wherein, the treatment sewage is the anaerobic sludge digestion liquid of sewage treatment plants, water 30m3/ d, water temperature
It is 32~35 DEG C, PH 7.3~7.5, type of reactor is Anaerobic Sequencing Bath Reactor (ASBR), and reactor series is 4 grades, instead
Answering device dischargeable capacity is 11m3, starting duration 53d.
The water body for extracting sewage water inlet pipe and clear water water outlet carries out ammonia nitrogen detection.Testing result is as shown in table 1 below.By table
1 as it can be seen that the sewage treatment process provided by the invention based on Anammox, has good denitrification.
Table 1
| Project | Ammonia nitrogen | Total nitrogen | COD |
| It intakes (mg/L) | 892 | 1028 | 2230 |
| It is discharged (mg/L) | 21 | 47 | - |
| Removal rate | 97.6% | 95.4% | - |
Embodiment 2
Difference from example 1 is that: the treatment sewage is food processing wastewater, water 70m3/ d, water
Temperature is 30~33 DEG C, PH 7.3~7.5, and reactor series is 3 grades, and reactor dischargeable capacity is 21.8m3, starting duration is
58d。
The water body for extracting sewage water inlet pipe and clear water water outlet carries out ammonia nitrogen detection.Testing result is as shown in table 2 below.By table
2 as it can be seen that the sewage treatment process provided by the invention based on Anammox, has good denitrification.
Table 2
| Project | Ammonia nitrogen | Total nitrogen | COD |
| It intakes (mg/L) | 627 | 736 | 928 |
| It is discharged (mg/L) | 33 | 57 | - |
| Removal rate | 94.7% | 92.2% | - |
Embodiment 3
Difference from example 1 is that: the treatment sewage is pig sewage of farm, water 50m3/ d, water
Temperature is 33~34 DEG C, PH 7.3~7.5, type of reactor UASB+IFAS, and reactor series is 5 grades, reactor dischargeable capacity
For 21.8m3, starting duration 73d.
The water body for extracting sewage water inlet pipe and clear water water outlet carries out ammonia nitrogen detection.Testing result is as shown in table 3 below.By table
3 as it can be seen that the sewage treatment process provided by the invention based on Anammox, has good denitrification.
Table 3
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of sewage treatment process based on Anammox, which comprises the following steps:
Sewage-treatment plant is provided, the sewage-treatment plant includes multi-stage biological reactor, with the multi-stage biological reactor
Connection and the sewage water inlet pipe for being used to input treatment sewage, and be connected to the multi-stage biological reactor and be used to be discharged
The clear water outlet pipe of processed water sample；The multi-stage biological reactor includes at least the first order being connected to the sewage water inlet pipe
Bioreactor and N grades of bioreactors being connected to the clear water outlet pipe, the first order bioreactor and described
The N-2 bioreactor that aqueduct is sequentially connected in series is provided between N grades of bioreactors；The multi-stage biological is anti-
Answer each bioreactor of device that the first opening and the second opening are respectively set, and the N grades of bioreactors is described
Second opening is connected to first opening of the N-1 grades of bioreactors by first pipe；Wherein, the N is greater than
Equal to 2；
Treatment sewage is injected in first bioreactor by the wastewater influent pipeline, carry out partial nitrification with
Anammox processing, then the water body after the first bioreactor for treatment is implanted sequentially the second level by the aqueduct
In bioreactor ... the N-1 grades of bioreactors, the N grades of bioreactors, carry out at Anammox step by step
Reason；Meanwhile the preliminary sludge in the first order bioreactor based on ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria is subjected to bacterium
Strain separation, the part based on ammonia oxidation bacteria separated is re-injected in first bioreactor, will be contained
It states the part based on anaerobic ammonia oxidizing bacteria and injects the N grades of bioreactors；By in the N grades of bioreactors through detesting
The final stage sludge of anaerobic ammonium oxidation processing deposition carries out bacterium mud separation, and the anaerobic ammonia oxidizing bacteria separated is managed by described first
Road is seeded to step by step in previous stage bioreactor, the mud outlet that will be separated.
2. as described in claim 1 based on the sewage treatment process of Anammox, which is characterized in that the nitrosation with detest
The condition of anaerobic ammonium oxidation processing is equal are as follows: carries out partial nitrification under conditions of temperature is 20~40 DEG C, pH is 7~8.5 and detests
Anaerobic ammonium oxidation processing.
3. as claimed in claim 2 based on the sewage treatment process of Anammox, which is characterized in that, which is characterized in that institute
State the condition of the processing of Anammox step by step are as follows: carried out under the anaerobic environment that temperature is 25 DEG C~35 DEG C, pH is 7~8.5 by
Grade Anammox processing.
4. the sewage treatment process as described in any one of claims 1 to 3 based on Anammox, which is characterized in that the N
Value range meet: 2≤N≤5.
5. the sewage treatment process as described in any one of claims 1 to 3 based on Anammox, which is characterized in that described
Sewage-treatment plant is additionally provided with the first cyclone separator, and the preliminary sludge realizes bacterial strain point through first cyclone separator
From.
6. as claimed in claim 5 based on the sewage treatment process of Anammox, which is characterized in that first eddy flow point
The second pipe communicated with the first order bioreactor, the third communicated with the sewage water inlet pipe are respectively arranged with from device
Pipeline, the 4th pipeline communicated with the N grades of bioreactors, wherein
The preliminary sludge is drained in first cyclone separator through the second pipe；
The ammonia oxidation bacteria separated through first cyclone separator injects the sewage water inlet pipe by the third pipeline,
Converge the injection first order bioreactor with treatment sewage；
The mud containing the anaerobic ammonia oxidizing bacteria is injected by the 4th pipeline after first cyclone separator separation
The N grades of bioreactors.
7. as claimed in claim 6 based on the sewage treatment process of Anammox, which is characterized in that the second pipe with
Second open communication of the first order bioreactor.
8. the sewage treatment process as described in any one of claims 1 to 3 based on Anammox, which is characterized in that be used for
The first pipe section for connecting the N grades of bioreactors and the N-1 grades of bioreactors is provided with the second cyclonic separation
Device, the final stage sludge realize that bacterium mud separates through second cyclone separator.
9. the sewage treatment process as described in any one of claims 1 to 3 based on Anammox, which is characterized in that described
The top of the bioreactor is arranged in first opening, and the lower part of the bioreactor is arranged in second opening.
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