CN105502663B - A kind of multifunctional bio denitrification reactor - Google Patents
A kind of multifunctional bio denitrification reactor Download PDFInfo
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- CN105502663B CN105502663B CN201610088953.7A CN201610088953A CN105502663B CN 105502663 B CN105502663 B CN 105502663B CN 201610088953 A CN201610088953 A CN 201610088953A CN 105502663 B CN105502663 B CN 105502663B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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Abstract
A kind of multifunctional bio denitrification reactor, the reactor include rectangle opening pond body（1）, aerobic zone and anaerobic zone（13）.The reactor is by dividing plate（8）Rectangle opening pond body is divided into Liang Ge areas, i.e. aerobic zone and anaerobic zone；Twoth area pass through the first effluent trough（9）And communicating pipe（12）It is interconnected；Aerobic zone is by the swash plate with a vertical certain angle（5）It is separated into aeration zone（4）And aerobic area（7）；Anaerobic zone is by water-locator（14）And circulating pump（15）Form.When handling ammonia nitrogen waste water, ammonia nitrogen waste water is introduced into aerobic zone and carries out aerobic reaction reactor of the present invention, then voluntarily flows into anaerobic reaction area and carry out anaerobic reaction, and then outflow reactor, whole process are because of gesture under the promotion of ascending current, without power.Nitric efficiency beneficial to the growth of microorganism, is improved in aerobic zone and anaerobic zone zoning design by the present invention；With seldom more dissolved oxygens of aeration power consumption, reach energy-conservation purpose.
Description
Technical field
The present invention relates to a kind of multifunctional bio denitrification reactor, belongs to technical field of sewage.
Background technology
With the development of society, the mankind gradually step up to environmental requirement, and it is stricter to the discharge standard of sewage, administer useless
The technology of water is evolving.Ammonia nitrogen is one of main component of water pollution, is ammonia nitrogen in waste water processing using bio-denitrification technology
The important method of technology, the biological denitrification process mainly used at present have：Complete nitrification and denitrification, short-cut nitrification and denitrification and portion
Divide the techniques such as nitrosation Anammox, nitrifying process is more, it is necessary to aerobic environment, denitrification and anaerobism based on aerobic microbiological
Ammoxidation process is more than based on anaerobe, it is desirable that anaerobic environment.At present using more technology be A/O, SBR,
MBR, UASB etc., in actual use, aerobic microbiological and anaerobe all survive these technologies in same environment,
Aerobic environment, or anaerobic environment, for microorganism, environment is in-and-out unstable, directly influences microorganism
Growth and treatment effeciency, this is us is badly in need of the technical problem that solves on biological denitrificaion processing ammonia nitrogen waste water.
The content of the invention
The object of the present invention is to handle the problem of anxious to be resolved in ammonia nitrogen waste water according to existing biological denitrificaion, the present invention carries
Go out a kind of multifunctional bio denitrification reactor and operating method.
The technical scheme is that a kind of multifunctional bio denitrification reactor of the present invention includes rectangle opening pond body, it is good
Oxygen area and anaerobic zone；Rectangle opening pond body is divided into Liang Ge areas by the biological denitrification reactor by dividing plate, i.e., aerobic zone and detests
Oxygen area；Twoth area are interconnected by the first effluent trough and communicating pipe；Aerobic zone is separated into aeration zone and aerobic area by swash plate；Anaerobism
Area is made up of water-locator and circulating pump；By water inlet pipe and outlet pipe and external connection；Aeration zone is provided with aerator, aerator by
Outside adds air and is aerated in aeration zone.
The reactor is used to handle ammonia nitrogen in high ammonia-nitrogen wastewater, and achievable short-cut nitrification-denitrification and partial nitrification-
Anaerobic ammonia oxidation process.
The aerobic zone is nitrosation reaction area, by be aerated it is aerobic by ammonia oxidation bacteria by ammonium oxidation into nitrite nitrogen；Institute
It is mainly anti-nitrosation reaction area or Anammox reaction zone to state anaerobic zone.Anti-nitration reaction area is mainly the environment in anaerobism
Under, by anti-nitrite bacteria, nitrite nitrogen is reduced into nitrogen.Anammox reaction zone is mainly the environment in anaerobism
Under, by anaerobic ammonia oxidizing bacteria, ammoniacal nitrogen and nitrite nitrogen are reacted, generate nitrogen.
The tilt angle alpha 1 of the dividing plate and horizontal plane is 20 °~50 °.
The tilt angle alpha 2 of the swash plate and vertical plane is 20 °~55 °；The distance between the top of swash plate and chamber wall L1
Between 20mm~500mm, swash plate top is consistent with water surface elevation.
10mm to 100mm gap is kept between the swash plate and the dividing plate, is easy to the backflow of waste water and sludge.
The level height of first effluent trough is necessarily more than the level height of outlet pipe.
One end of the communicating pipe connects the first effluent trough, and the other end is in anaerobic zone bottom.
The short-cut nitrification-denitrification process conditions are that aeration zone dissolved oxygen DO controls the model in 0.5mg/l~2mg/l
In enclosing, aerobic area dissolved oxygen DO is controlled in the range of 0.5mg/l or so, and pH is controlled between 6.5~7.5, it is ensured that in waste water
Ammonia nitrogen be mainly converted into based on nitrite nitrogen, in anaerobic zone while circulation stirring, add a certain amount of organic carbon source, will
BOD：TN is controlled 2:1, the upflow velocity of anaerobic zone outlet is controlled within 0.5m/h.
The partial nitrification-anaerobic ammonia oxidation process condition is that aeration zone DO is controlled in 0.5mg/L~1.5mg/L, will
Aerobic area DO Kong ≤0.3mg/L, aerobic zone pH control carry out nitrosation in 6.5~8 scopes, the ammonia for there was only part with guarantee
Reaction forms nitrite nitrogen, will control NH3-N:NO2-N≧1；The upflow velocity of anaerobic zone outlet is controlled within 0.4m/h.
Multifunctional bio denitrification reactor operation principle of the present invention：High ammonia-nitrogen wastewater enters multifunctional bio by water inlet pipe 2
Denitrification reactor aerobic zone, in the effect of the aeration of aerator 3, waste water travels up to reactor head with bubble lifting,
Because swash plate 5 is slant setting, the up-small and down-big space structure in aeration zone, to making gas and water constantly be extruded at top, produce
Air lift effect has been given birth to, carbonated drink is broken through the water surface, the upper end of swash plate 5 has been climbed over and pours in aerobic area, due to being gushed on aeration process carbonated drink, exposing
Negative pressure is formed on the bottom in gas area.In aerobic area, after the water of aeration zone climbs over swash plate 5, advection is formed, in advection again by baffle plate
6 stop forces water to be flowed down along swash plate 5, under suction function of most of water by aeration zone bottom, is flowed back around the bottom of swash plate 5
To aeration zone, aeration cycle is realized；Least a portion of water is under waterpower impetus, around baffle plate 6, then carries out slow upward advection
To the first effluent trough 9, the water of the first effluent trough 9 flows into communicating pipe 12 in the presence of water-head, now by Aerobic Process for Treatment
Waste water enters anaerobic zone；And the aerobic sludge of aerobic zone settles under gravity, along the oblique flow of dividing plate 8 to aeration zone, lead to
Aeration is crossed to be circulated.Waste water flows into anaerobic reaction area bottom by communicating pipe 12, is mixed with highdensity anaerobic sludge, then
Water-locator 14 is pumped into by circulating pump 15 and carries out mass transfer stirring, anaerobic organism is reacted more abundant, reacted waste water is slow
Flow up, flow out bioreactor into the second effluent trough 10, then by outlet pipe 11；And anaerobic sludge is by Action of Gravity Field,
Anaerobic reaction area is back to, so as to ensure that anaerobic sludge portion is lost in, reactor sludge quantity is on the increase, and disposal ability constantly increases
By force.
The invention has the advantages that a kind of multifunctional bio denitrification reactor of the present invention is when handling ammonia nitrogen waste water, it is good
Oxygen area and the multidomain treat-ment of anaerobic zone so that aerobic bacteria and anaerobic bacteria have its adaptable living environment.Ammonia nitrogen waste water is introduced into
Aerobic zone carries out aerobic reaction, then voluntarily flows into anaerobic reaction area and carry out anaerobic reaction, is then flowed down in the promotion of ascending current
Go out reactor, whole process is because of gesture, without power.Waste water stirs in aeration zone with sludge mixing mass transfer, is only made by aeration
With and fruit.The up-small and down-big structure space in aeration zone does not only have good circulation stirring function, and because air water top by
Extruding, it is easier to the transfer of oxygen so that more dissolved oxygen DO are obtained with seldom aeration power consumption, reach the saving energy,
Reduce the purpose of operating cost.
Brief description of the drawings
Fig. 1 is multifunctional bio denitrification reactor structural representation of the present invention；
In figure, 1 is reactor pond body；2 be water inlet pipe；3 be aerator；4 be aeration zone；5 be swash plate；6 be baffle plate；7 are
Aerobic area；8 be dividing plate；9 be the first effluent trough；10 be the second effluent trough；11 be outlet pipe；12 be communicating pipe；13 be anaerobic zone；
14 be water-locator；15 be circulating pump.
Embodiment
The embodiment of the present invention is as shown in Figure 1.
A kind of multifunctional bio denitrification reactor of the present embodiment includes rectangle opening pond body 1, aerobic zone and anaerobic zone 13；Institute
State biological denitrification reactor and rectangle opening pond body 1 is divided into Liang Ge areas, i.e. aerobic zone and anaerobic zone 13 by dividing plate 8；Twoth area lead to
Cross the first effluent trough 9 and communicating pipe 12 is interconnected；Aerobic zone is separated into aeration zone 4 and aerobic area 7 by swash plate 5；Anaerobic zone 13
It is made up of water-locator 14 and circulating pump 15；By water inlet pipe 2 and outlet pipe 11 and communicating pipe 12 and external connection；Aeration zone 4 is set
Aerator 3, aerator 3 add air by outside and are aerated in aeration zone.
The operating method of the present embodiment reactor is as follows：
(1) short-cut nitrification-denitrification technique
With short-cut nitrification-denitrification denitrification process, it is anti-that high ammonia-nitrogen wastewater enters biological denitrificaion in a manner of continuum micromeehanics
After answering device, nitrosation reaction is first carried out, this process needs flow control, the control of dissolved oxygen and the pH control intake
System, by inflow control in certain scope, ensure that the nitrosation time is not excessive, dissolved oxygen DO controls in aeration zone are existed
In the range of 0.5mg/l~2mg/l, aerobic area dissolved oxygen DO is controlled in the range of 0.5mg/l or so, pH controls 6.5~
Between 7.5, it is ensured that the ammonia nitrogen in waste water is mainly converted into based on nitrite nitrogen；
Waste water enters anaerobic reaction area after completing nitrosation in aerobic zone, carries out reducing instead in the presence of denitrifying bacteria
Should, nitrite nitrogen is reduced into nitrogen；During this, because the growth of anti-nitrite bacteria needs carbon as its nutriment,
In anaerobic zone while circulation stirring, a certain amount of organic carbon source is added, by BOD：TN is controlled 2:1；High ammonia-nitrogen wastewater passes through
Short-cut nitrification-denitrification denitrification process, its ammonia nitrogen removal frank is more than 85%.
The upflow velocity that flow of inlet water is exported with anaerobic zone determines, Kong ≤0.5m/h；
(2) partial nitrification-anaerobic ammonia oxidation process
High ammonia-nitrogen wastewater, into multifunctional bio denitrification reactor, is introduced into aerobic zone progress in a manner of continuum micromeehanics
Partial nitrification reacts.Because the ammonia in waste water can only partly carry out nitrosation reaction, and nitration reaction can not be carried out, therefore
The dissolved oxygen DO of aerobic zone concentration must be controlled first, by aeration zone DO controls in 0.5mg/L~1.5mg/L, by aerobic area
DO Kong ≤0.3mg/L, by controlling aeration quantity, shorten the reaction time, to reduce cycle-index of the waste water in aeration zone, together
When aerobic zone pH controls in 6.5~8 scopes, form nitrite nitrogen to ensure to only have the ammonia of part to carry out nitrosation reaction, will control
NH3-N processed:NO2-N≧1；
Due to slow-growing, multiplication cycle length, Anammox biological flora is easy to the anaerobic ammonia oxidizing bacteria of anaerobic zone
Dry by other bacteriums scratches destruction, and therefore, the partial nitrification waste water into anaerobic zone contains other bacterium, it is necessary to reduce as far as possible
The suspension of group flows into anaerobic zone, and the aerobic area of the aerobic zone of multifunctional bio denitrification reactor employs flat flow precipitinogen
Reason design, possess the function of retention suspension, when the waste water of partial nitrification is flowing to the first effluent trough simultaneously, also entering to act charitably
The precipitation Interception process of the suspensions such as oxygen animalcule；In aerobic zone, by hydraulic load control within 0.4m3/m2h, enter
The waste water of anaerobic zone carries out water distribution circulation stirring in the presence of circulating pump and water-locator, so that mass transfer effect is more preferably, it is ensured that detest
Anaerobic ammonium oxidation bacterium preferably carries out nitrification denitrification reaction；High ammonia-nitrogen wastewater passes through partial nitrification-anaerobic ammonia oxidation process, its ammonia
Nitrogen removal efficiency is more than 80%.
The upflow velocity that flow of inlet water is exported with anaerobic zone determines, within upflow velocity Kong ≤0.4m/h.
Claims (2)
- A kind of 1. multifunctional bio denitrification reactor, it is characterised in that the reactor includes rectangle opening pond body, aerobic zone and Anaerobic zone；Rectangle opening pond body is divided into Liang Ge areas by the reactor by the dividing plate with the horizontal certain angle, i.e., aerobic Area and anaerobic zone；Twoth area are interconnected by the first effluent trough and communicating pipe；Aerobic zone is by with a vertical certain angle Swash plate is separated into aeration zone and aerobic area；Anaerobic zone is made up of water-locator and circulating pump；Water inlet pipe and outlet pipe and communicating pipe with External connection；Aeration zone is provided with aerator, and aerator adds air by outside and is aerated in aeration zone；The reactor is used In handling ammonia nitrogen in high ammonia-nitrogen wastewater, short-cut nitrification-denitrification and partial nitrification-anaerobic ammonia oxidation process can be achieved；The angle of inclination (α 1) of the dividing plate (8) and horizontal plane is 20 °~50 °；The angle of inclination (α 2) of the swash plate (5) and vertical plane is 20 °~55 °；The distance between the top of swash plate and chamber wall For L1 between 20mm~500mm, swash plate top is consistent with water surface elevation；10mm to 100mm gap is kept between the swash plate and the dividing plate, is easy to the backflow of waste water and sludge；The level height of first effluent trough is more than the level height of outlet pipe；One end of the communicating pipe connects the first effluent trough, and the other end is in anaerobic zone bottom.
- A kind of 2. multifunctional bio denitrification reactor according to claim 1, it is characterised in that the operation side of the reactor Method includes：(1) short-cut nitrification-denitrification techniqueWith short-cut nitrification-denitrification denitrification process, high ammonia-nitrogen wastewater enters biological denitrification reactor in a manner of continuum micromeehanics Afterwards, nitrosation reaction is first carried out, this process needs flow control, the control of dissolved oxygen and the pH control intake, will Inflow is controlled in certain scope, ensures that the nitrosation time is not excessive, by aeration zone dissolved oxygen DO controls 0.5mg/l~ In the range of 2mg/l, aerobic area dissolved oxygen DO is controlled in the range of 0.5mg/l or so, and pH is controlled between 6.5~7.5, really The ammonia nitrogen protected in waste water is mainly converted into based on nitrite nitrogen；Waste water enters anaerobic reaction area after completing nitrosation in aerobic zone, and reduction reaction is carried out in the presence of denitrifying bacteria, Nitrite nitrogen is reduced into nitrogen；During this, because the growth of anti-nitrite bacteria needs carbon detesting as its nutriment While oxygen area circulation stirring, a certain amount of organic carbon source is added, by BOD：TN is controlled 2:1；The upflow velocity that flow of inlet water is exported with anaerobic zone determines, Kong ≤0.5m/h；(2) partial nitrification-anaerobic ammonia oxidation processHigh ammonia-nitrogen wastewater, into multifunctional bio denitrification reactor, is introduced into aerobic zone and carries out part in a manner of continuum micromeehanics Nitrosation reaction；Because the ammonia in waste water can only partly carry out nitrosation reaction, and nitration reaction can not be carried out, therefore first The dissolved oxygen DO of aerobic zone concentration must be controlled, aeration zone DO is controlled in 0.5mg/L~1.5mg/L, aerobic area DO is controlled ≤0.3mg/L processed, by controlling aeration quantity, shorten the reaction time, to reduce cycle-index of the waste water in aeration zone, and meanwhile it is good PH controls in oxygen area form nitrite nitrogen, control NH3- in 6.5~8 scopes, the ammonia progress nitrosation reaction for there was only part with guarantee N:NO2-N≧1；Due to slow-growing, multiplication cycle length, Anammox biological flora is highly susceptible to the anaerobic ammonia oxidizing bacteria of anaerobic zone The dry of other bacteriums scratches destruction, and therefore, the partial nitrification waste water into anaerobic zone contains other floras, it is necessary to reduce as far as possible Suspension flows into anaerobic zone, and the aerobic area of the aerobic zone of multifunctional bio denitrification reactor employs flat flow precipitation principle and set Meter, possess the function of retention suspension, when the waste water of partial nitrification is flowing to the first effluent trough simultaneously, also carry out it is aerobic micro- The precipitation Interception process of bioseston；In aerobic zone, hydraulic load is controlled in 0.4m3/m2Within h, into anaerobic zone Waste water carries out water distribution circulation stirring in the presence of circulating pump and water-locator, so that mass transfer effect is more preferably, it is ensured that Anammox Bacterium preferably carries out nitrification denitrification reaction；The upflow velocity that flow of inlet water is exported with anaerobic zone determines, within upflow velocity Kong ≤0.4m/h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793398A (en) * | 2018-06-08 | 2018-11-13 | 北京工业大学 | The method and apparatus for coupling Anammox advanced nitrogen as the short-cut denitrification of carbon source using sludge fermentation mixture |
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| CN113860494B (en) * | 2021-08-24 | 2023-07-18 | 江苏海洋大学 | Integrated wastewater denitrification process based on synchronous nitrification and denitrification |
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