CN107399829A - A kind of method and system device that nitrate in water removal is removed based on S-Fe collaboration autotrophic denitrifications - Google Patents
A kind of method and system device that nitrate in water removal is removed based on S-Fe collaboration autotrophic denitrifications Download PDFInfo
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- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- 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
- C02F3/2853—Anaerobic digestion processes using anaerobic membrane bioreactors
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
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- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/345—Biological treatment of water, waste water, or sewage characterised by the microorganisms used for biological oxidation or reduction of sulfur compounds
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C02F2101/00—Nature of the contaminant
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- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
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- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C02F2209/15—N03-N
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
The present invention discloses a kind of method and system device that nitrate in water removal is removed based on S Fe collaboration autotrophic denitrifications.Methods described includes with sulfur granules, iron particle and denitrifying bacteria handling in the reactor of anoxic or anaerobism the waste water containing sulfate, the step of separating water outlet by membrane module again afterwards.Present invention also offers the system and device for realizing the above method.The collaboration of S, Fe autotrophic denitrification is got up in the reactor, and denitrogenation and separation process are combined together, activated sludge, into fluidized state, is fully carried out efficient autotrophic denitrification denitrogenation with S, Fe using stirring action.S autotrophic denitrifications are cooperateed with coupling by the present invention with Fe autotrophic denitrifications, while realize control sulfate radical growing amount and maintenance reaction system pH.It is adapted to the middle and high concentration nitrate wastewater of processing, there is the advantages such as remove nitrate efficiency high, simple to operate, floor space is small, operating cost is low, will be played a significant role in waste water nitrate practice of harnessing.
Description
Technical field
The present invention relates to the method that microorganism chemautotrophy denitrification removes nitrate nitrogen in water removal, belong to Shui Chu
The application field of reason technology.More particularly relate to utilize S, Fe collaborative energy autotrophic denitrification by NO3--N
It is reduced to N2, separation of solid and liquid is realized using film retention microorganism, realizes efficient autotrophic denitrification.
Background technology
Water resource is valuable source for the survival of mankind, still, recently as a large amount of growths of population
With developing rapidly for economy, cause azotate pollution problem getting worse in water.Drink for a long time by nitrate
The water source of pollution, methemoglobinemia can be caused, inferior ammonium nitrate being transformed into by nitrate etc., which has, to be caused
Cancer, teratogenesis, mutagenesis etc. act on.With the getting worse of azotate pollution problem, " rich water well " phenomenon
It is continuously increased, then triggers disease, worm, the evil of crops.In addition, the azotate pollution in water exacerbates
The eutrophication of water body, causes the transparency of water body to reduce, the mortality of aquatile.So water
Middle nitrate goes out to have become environmental problem urgently to be resolved hurrily.
Biological denitrification is that nitrate is thoroughly reduced into nitrogen using the metabolism of microorganism, has behaviour
Make the advantages such as simple, reaction condition is gentle, operating cost is low, be the main stream approach that nitrate is removed in water.
Heterotrophic denitrification and autotrophic denitrification can be divided into according to the difference using carbon source.Heterotrophic denitrification is with organic
Compound is nutrient source, and microbial growth is rapid, and reaction rate is fast, but surplus sludge volume is big, and is needed
Organic carbon source additionally is added, is not suitable for low carbon/nitrogen ratio waste water denitrification.Autotrophic denitrification is that microorganism utilizes
Lower valency sulphur or hydrogen etc. are used as electron donor, using DIC as nutrient source, nitrate is thoroughly reduced into nitrogen
Gas.Autotrophic denitrification Procedure Cell propagation is slow, and surplus sludge volume is small, non-secondary pollution, thus by wide
General research and application.Hydrogen is a kind of inflammable gas, is existed necessarily in storage and transportation
Danger, cost of use is high, the application of hydrogen autotrophic denitrification is received restriction.Used in sulphur autotrophic denitrification
The sulphur arrived is cheap and easy to get, has been widely used in Practical Project, and nitrate reduction is being by microorganism
Lower valency sulphur is oxidized to sulfate radical while nitrogen, thus in processes, the nitrate wastewater of high concentration
When, it is exceeded to be easily caused water outlet sulfate radical.In addition, sulphur autotrophic denitrification process persistently produces acid, to remain anti-
Answer the extra consumption basicity of the constant needs of system pH.
Accordingly, it is desirable to provide a kind of need not additionally consume basicity and significantly reduce sulfate radical growing amount
Remove the method for nitrate and used system and device in water removal.
The content of the invention
Nitric acid in water removal is gone based on S-Fe collaboration autotrophic denitrifications it is an object of the present invention to provide one kind
The method of salt.This method effectively overcomes the defects of existing method, cooperates with S, Fe autotrophic denitrification process,
The advantages of integrated fluid bed and membrane bioreactor, new denitrogenation technology in a kind of safe and efficient water is established,
Can reach need not additionally consume basicity and significantly reduce the purpose of sulfate radical growing amount.
Nitre in water removal is gone based on S-Fe collaboration autotrophic denitrifications it is another object of the present invention to provide one kind
The system and device of hydrochlorate.
The present invention provides a kind of S-Fe collaborations autotrophic denitrification and goes nitrate nitrogen method and system in water removal to fill
Put.Autotrophic microbe is using DIC as carbon source, effectively organic carbon source can be avoided to consume, and is reduced remaining dirty
Mud yield and CO2 emission.Meanwhile Fe autotrophic denitrifications are the processes of a production alkali, can be S
Autotrophic denitrification process provides basicity, so as to which maintenance system pH value is constant.Fe can divide as electron donor
S load is carried on a shoulder pole, significantly reduces the growing amount of sulfate radical.Therefore, S-Fe collaboration autotrophic denitrifications are used for
Nitrate in low carbon/nitrogen ratio water is removed to have a good application prospect.
To reach above-mentioned first purpose, the present invention uses following technical proposals：
A kind of method for removing nitrate in water removal based on S-Fe collaboration autotrophic denitrifications, methods described includes will
The reactor of waste water containing nitrate sulphur powder, iron powder and denitrifying bacteria in anoxic or anaerobism
Interior processing, and by membrane module separate water outlet the step of.
Preferably, the sulfur granules and the additional proportion of iron particle are 1:1~1:4, the determination of the ratio needs
Consider to avoid the influence and limitation that the amount of sulphur or iron grows microorganism as far as possible.
Preferably, the membrane module is hollow-fibre membrane, and film wire is milipore filter or microfiltration membranes.Milipore filter
It can be very good to have the function that to retain microorganism with microfiltration membranes, avoid water outlet microorganism pollution.
Preferably, the waste water is according to nitrate concentration water conservancy residence time in reactor from low to high
For 20min~4h.
Preferably, sulphur powder, iron powder and the denitrifying bacteria are formed in reactor by stirring
Fluidized state.Fluidisation state can strengthen effect of mass transmitting, improve sulfur granules, the utilization rate of iron particle.
The present invention technical principle be：Under the conditions of hypoxic/anaerobic, iron, sulphur oxidation process denitrification bacterium utilize inorganic
Carbon compound is as carbon source, respectively using sulphur and iron as electron donor, using nitrate anion or nitrite anions as electricity
Sub- acceptor, while sulphur is oxidized into sulfate, Zero-valent Iron is oxidized to ferrous iron and ferric ion,
It is nitrogen by nitrate anion or Nitrite reduction.
Present invention also offers a kind of system and device for realizing said process.
A kind of system and device that nitrate in water removal is removed based on S-Fe collaboration autotrophic denitrifications, the system dress
Put including closing anaerobic/anoxic reacter 3, water tank 1 and liquid seal device 2；Closing anaerobic/the anoxic is anti-
Answer in device 3 and be provided with electric blender 4 and membrane module 5；The waste water containing nitrate in the water tank passes through
Pipeline is pumped into closing anaerobic/anoxic reacter 3 through peristaltic pump 6 of intaking and handled, and is wriggled after through water outlet
Pump 9 pumps out；Pressure vacuum gauge 7 is provided between delivery port and water outlet peristaltic pump 9；The closing anaerobic/lack
Caused gas is discharged by escape pipe through liquid seal device 2 in oxygen reactor 3.
Further, described device also includes PCL automatic control systems 8, the water inlet of described device and goes out
Water is controlled by PCL automatic control systems 8；Described device is using continuum micromeehanics and continuous effluent
Mode is run.
Preferably, the membrane module 5 and closing anaerobic/anoxic reacter 3 are integrated, are immersed in reaction
Sulfided state reactant inside device, to retain microorganism so as to realize separation of solid and liquid.The membrane module 5
For hollow-fibre membrane, film wire is milipore filter or microfiltration membranes.Milipore filter and microfiltration membranes can be very good to reach
The effect of microorganism is retained, avoids water outlet microorganism pollution.
In closing anaerobic/anoxic reacter 3 of the device, sulphur, iron and autotrophic denitrification bacterium are in electricity
It is in fluidized state under the stirring action of dynamic mixer 4, is sufficiently mixed, water inlet is controlled automatically by PCL
System control processed, water outlet carry out external-compression type water outlet, denitrification process by membrane module 5 by wriggling pumping
In caused nitrogen discharged by liquid seal device 2.
The technique for removing nitrate in water removal based on S-Fe collaboration autotrophic denitrifications using said apparatus, including such as
Lower specific steps：
1) the domestication cultivation stage of seed sludge
Take sewage treatment plant's anaerobism section activated sludge to add sulphur powder and iron powder, continue batch addition nutrient solution,
Domestication is oriented, is an acclimation period per 12-72h, until nitrate removal rate reaches 95-100%；
2) inoculation of system and device and startup stage
By sulphur powder, iron powder with 1:1 ratio and the mixing of above-mentioned activated sludge (add sulphur again
Powder and iron powder mix are to start reactor system in reactor, utilize the microorganism obtained by admonitory talk to subordinates
To handle nitrate wastewater), control liquid level to intake by liquid level gauge, set the rotating speed of electric blender to exist
500r/min, by membrane module water outlet, water discharging time is set as 7min, and stopping water discharging time is 3min,
The concentration of nitrate anion-nitrogen is 30mg/L, hydraulic detention time 3.0h, in water outlet in startup stage water inlet
Nitrate removal rate shows to start successfully up to more than 95%；
3) system and device stable operation
After system and device starts successfully, in different hydraulic detention times and the bar of water inlet nitrate anion-nitrogen concentration
Under part, system at least stable operation 5 days, while monitor NO3 --N、NO2 --N、SO4 2-And pH value
Change；The cleaning frequency of the membrane module is 20 days.
Present invention also offers a kind of system dress that nitrate in water removal is removed based on S-Fe collaboration autotrophic denitrifications
The application put.
Preferably, the application is the relatively low nitre of the underground water or organic carbon source of processing pollution of nitrate nitrogen
The surface water of hydrochlorate polluted by nitrogen.The inventive method and device are for underground water and the surface water system of low-carbon-source
When there is obvious technical advantage.
In the prior art, it is related to individually use S or autotrophic denitrification processing nitric acid is individually carried out using Fe
The report of salt, but its shortcoming is that single S autotrophys can produce largely when handling high nitrate concentration waste water
Sulfate, and need to provide extra basicity, single Fe autotrophic denitrifications, which can produce a large amount of basicity, to be made
System pH raises.The S-Fe collaboration autotrophic denitrifications of the present invention can effectively reduce the generation of sulfate,
And basicity caused by Fe autotrophic denitrifications can be consumed by S autotrophic denitrifications, without providing exogenously added alkali again
Degree.
Different from prior art, the present invention provides a kind of new method for removing nitrate nitrogen in water removal, specifically exists
The collaboration of S, Fe autotrophic denitrification is got up in immersion fluid bed hypoxic/anaerobic membrane bioreactor, and will
Denitrogenation and separation process are combined together, and make activated sludge and S, Fe into fluidized state using stirring action,
Fully carry out efficient autotrophic denitrification denitrogenation.The present invention cooperates with S autotrophic denitrifications with Fe autotrophic denitrifications
Coupling, while realize control sulfate radical growing amount and maintenance reaction system pH.It is adapted to processing middle and high dense
Nitrate wastewater is spent, there is removal nitrate efficiency high, simple to operate, floor space is small, operating cost is low
The advantages that, it will be played a significant role in waste water nitrate practice of harnessing.
Compared with prior art, the inventive method and the advantage of device are embodied in：
1st, the shortcomings that overcoming single S, Fe autotrophic denitrification, by S, Fe autotrophic denitrification process synergic
Get up, control sulfate radical growing amount and maintenance reaction system pH；
2 while the defects of overcome traditional sulphur autotrophy fixed bed denitrification technology to exist, in electric blender
Under effect, sulphur, iron particle and microorganism is set to strengthen mass transport process in fluidisation state, effectively increase biology
Denitrifying reaction rate；
3rd, using milipore filter water outlet, it effectively prevent microorganism pollution in water outlet.
Beneficial effects of the present invention are as follows：
The method and system device proposed by the present invention for removing nitrate has advantages below：
1. autotrophic denitrification unit is in fluidized state, mass transport process can be strengthened, improve the anti-of reaction unit
Rate of nitrification, floor space are small.
2. water outlet can make to keep higher biomass in reactor through membrane filtration, the crown_interception of membrane module,
Biological treatment efficiency is improved, avoids secondary pollution, reaction volume load also improves therewith.
3. the technique makes denitrification denitrification process be integrated with film water outlet in a reaction unit, compact-sized,
Run simple to operate, it is easy to accomplish Automated condtrol.
4. operating cost is low, application easy to spread.
5. the effectively growing amount of control sulfate, in processes, high nitrate concentration waste water when have it is obvious
Advantage.
6. system pH is maintained in a constant range, avoid additionally consuming basicity.
Brief description of the drawings
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows that the present invention removes the system and device of nitrate in water removal based on S-Fe collaboration autotrophic denitrifications
Schematic diagram.
Embodiment
In order to illustrate more clearly of the present invention, the present invention is done into one with reference to preferred embodiments and drawings
The explanation of step.Similar part is indicated with identical reference in accompanying drawing.Those skilled in the art
It should be appreciated that following specifically described content is illustrative and be not restrictive, should not be limited with this
Protection scope of the present invention.
Embodiment 1
A kind of system and device that nitrate in water removal is removed based on S-Fe collaboration autotrophic denitrifications, its structural representation
Figure is as shown in figure 1, mainly include：Closing anaerobic/anoxic reacter 3, water tank 1 and liquid seal device 2；Institute
State in closing anaerobic/anoxic reacter 3 and be provided with electric blender 4 and membrane module 5；Containing in the water tank
The waste water for having sulfate is pumped at closing anaerobic/anoxic reacter 3 by pipeline through peristaltic pump 6 of intaking
Reason, is pumped out after through water outlet peristaltic pump 9；Pressure vacuum gauge 7 is provided between delivery port and water outlet peristaltic pump 9；
Caused gas is discharged by escape pipe through liquid seal device 2 in the closing anaerobic/anoxic reacter 3.
Described device also includes PCL automatic control systems 8, and the water inlet and water outlet of described device pass through PCL
Automatic control system 8 is controlled；Described device is run by the way of continuum micromeehanics and continuous effluent.
Specifically, electric blender 4 is set at the axle center of closing anaerobic/anoxic reacter 3, it is described electronic
Mixer 4 is driven by brushless electric machine.Membrane module 5 is internally integrated in closing anaerobic/anoxic reacter.Institute
State the top of closing anaerobic/anoxic reacter 3 and be provided with liquid level gauge and blast pipe, the blast pipe is communicated to fluid-tight
Device 2.Continuum micromeehanics mouth and continuous effluent mouth are provided with described closing anaerobic/anoxic reacter 3,
Water inlet peristaltic pump 6 is provided with the water inlet, water outlet peristaltic pump 9, water outlet are provided with the water outlet
Pressure vacuum gauge 7 is connected between mouth and water outlet peristaltic pump 9.The peristaltic pump and the relay controlled by liquid level gauge
Device is connected.
The membrane module 5 and closing anaerobic/anoxic reacter 3 are integrated, and the membrane module 5 is hollow
Tunica fibrosa, film wire are milipore filter or microfiltration membranes.
The concrete operations flow of the device is as follows：
1) the domestication culture of seed sludge
Take municipal sewage plant's anaerobism section activated sludge to add sulphur powder and iron powder, continue batch addition battalion
Nutrient solution, be oriented domestication, per 12-72h be an acclimation period, up to nitrate can stability and high efficiency go
Remove.
2) reactor is inoculated in startup
By sulphur powder, iron powder with 1:1 ratio and the mixing of above-mentioned activated sludge, water end (W.E.) pass through liquid level
Meter control liquid level water inlet, the rotating speed of electric blender is set by membrane module water outlet, to go out in 500r/min
The water time is set as 7min, and stopping water discharging time is 3min.The concentration of startup stage water inlet nitrate anion-nitrogen
For 30mg/L, hydraulic detention time 3.0h, nitrate can be completely removed as starting successfully.
3) reactor stable operation
Under conditions of different hydraulic detention times and water inlet nitrate anion-nitrogen concentration, at least stable fortune of system
Row 5 days, monitor NO3 --N、NO2 --N、SO4 2-And the change of pH value.The cleaning frequency of membrane module
For 20 days.
Embodiment 2
Nitrate wastewater is handled using the system and device of embodiment 1, its process parameter control is as follows：Having
The sulphur and each 150g of iron for adding that particle diameter is 0.5-20mm in the reactor that volume is 3.2L are imitated, is located
Reason raw water is configured by potassium nitrate, and nitrate nitrogen concentration is 30,50 and 80mg/L in water, during hydraulic retention
Between be set as 20min-1h.Water quality is as shown in table 1 after processing.
Table 1
Embodiment 3
Nitrate wastewater is handled using the system and device of embodiment 1, its process parameter control is as follows：Having
Imitate sulphur and each 150g of iron that 0.5-20mm is added in the reactor that volume is 3.2L, the raw water that is processed by
Potassium nitrate is configured, and nitrate nitrogen concentration is 100,300 and 500mg/L in water, and hydraulic detention time is set
For 1.5h-4.0h.Water quality is as shown in table 2 after processing.
Table 2
Comparative example 1
Nitrate wastewater is handled using the system and device of embodiment 1, its process parameter control is as follows：Having
It is that the sulphur 300g that particle diameter is 0.5-20mm is only added in 3.2L reactor to imitate volume, and be processed raw water
Configured by potassium nitrate, nitrate nitrogen concentration is 30,50 and 80mg/L in water, and hydraulic detention time is set
For 20min-1h.Water quality is as shown in table 3 after processing, and basicity consumption therein is with CaCO3Meter, unit are
mg/L。
Table 3
Comparative example 2
Nitrate wastewater is handled using the system and device of embodiment 1, its process parameter control is as follows：Having
It is that the sulphur 300g that particle diameter is 0.5-20mm is only added in 3.2L reactor to imitate volume, and be processed raw water
Configured by potassium nitrate, nitrate nitrogen concentration is 100,300 and 500mg/L in water, and hydraulic detention time is set
It is set to 20min-1h.Water quality is as shown in table 4 after processing, and basicity consumption therein is with CaCO3Meter, unit are
mg/L。
Table 4
Comparative example 3
Nitrate wastewater is handled using the system and device of embodiment 1, its process parameter control is as follows：Having
It is that the iron powder 300g that particle diameter is 0.5-20mm is only added in 3.2L reactor to imitate volume, and be processed original
Water is configured by potassium nitrate, and nitrate nitrogen concentration is 30,50 and 80mg/L in water, and hydraulic detention time is set
It is set to 20min-1h.Water quality is as shown in table 5 after processing, and basicity consumption therein is with CaCO3Meter, unit
For mg/L.
Table 5
Comparative example 4
Nitrate wastewater is handled using the system and device of embodiment 1, its process parameter control is as follows：Having
It is that the iron powder 300g that particle diameter is 0.5-20mm is only added in 3.2L reactor to imitate volume, and be processed original
Water is configured by potassium nitrate, and nitrate nitrogen concentration is 100,300 and 500mg/L in water, hydraulic detention time
It is set as 20min-1h.Water quality is as shown in table 6 after processing, and basicity therein is produced with CaCO3Meter, unit
For mg/L.
Table 6
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and
It is not the restriction to embodiments of the present invention, for those of ordinary skill in the field,
It can also be made other changes in different forms on the basis of described above, here can not be to all
Embodiment be exhaustive, every obvious change for belonging to technical scheme and extending out
Change or change the row still in protection scope of the present invention.
Claims (10)
- A kind of 1. method that nitrate in water removal is gone based on S-Fe collaboration autotrophic denitrifications, it is characterised in that： Methods described is included the sulphur powder of the waste water containing nitrate, iron powder and denitrifying bacteria in anoxic Or anaerobism reactor in handle, and by membrane module separate water outlet the step of.
- 2. according to claim 1 remove nitrate in water removal based on S-Fe collaboration autotrophic denitrifications Method, it is characterised in that：The sulphur powder and the additional proportion of iron powder are 1:1~1:4.
- 3. according to claim 1 remove nitrate in water removal based on S-Fe collaboration autotrophic denitrifications Method, it is characterised in that：The membrane module is hollow-fibre membrane, and film wire is milipore filter or microfiltration membranes.
- 4. according to claim 1 remove nitrate in water removal based on S-Fe collaboration autotrophic denitrifications Method, it is characterised in that：Water conservancy residence time of the waste water in reactor is 20min~4h.
- 5. according to claim 1 remove nitrate in water removal based on S-Fe collaboration autotrophic denitrifications Method, it is characterised in that：Sulphur powder, iron powder and the denitrifying bacteria are in reactor by stirring Mix to form fluidized state.
- 6. a kind of system and device that nitrate in water removal is removed based on S-Fe collaboration autotrophic denitrifications, its feature It is：The system and device includes closing anaerobic/anoxic reacter (3), water tank (1) and liquid seal device (2)； Electric blender (4) and membrane module (5) are provided with the closing anaerobic/anoxic reacter (3)；It is described It is anti-that the waste water containing nitrate in water tank by pipeline is pumped into closing anaerobic/anoxic through peristaltic pump (6) of intaking Answer device (3) to be handled, pumped out after through water outlet peristaltic pump (9)；Delivery port and water outlet peristaltic pump (9) Between be provided with pressure vacuum gauge (7)；Caused gas passes through in the closing anaerobic/anoxic reacter (3) Escape pipe is discharged through liquid seal device (2).
- 7. a kind of S-Fe collaboration autotrophic denitrifications that are based on according to claim 6 remove nitric acid in water removal The system and device of salt, it is characterised in that：Described device also includes PCL automatic control systems (8), described The water inlet and water outlet of device are controlled by PCL automatic control systems (8)；Described device is using continuous The mode of water inlet and continuous effluent is run.
- 8. a kind of S-Fe collaboration autotrophic denitrifications that are based on according to claim 6 remove nitric acid in water removal The system and device of salt, it is characterised in that：The membrane module (5) and closing anaerobic/anoxic reacter (3) Integrated, the membrane module (5) is hollow-fibre membrane, and film wire is milipore filter or microfiltration membranes.
- 9. a kind of S-Fe collaboration autotrophic denitrifications that are based on according to claim 6 remove nitric acid in water removal The system and device of salt, it is characterised in that S-Fe collaboration autotrophic denitrifications are based on using described device and go to remove water The technique of middle nitrate, is comprised the following specific steps that：1) the domestication cultivation stage of seed sludgeTake sewage treatment plant's anaerobism section activated sludge to add Cosan and iron powder, continue batch addition nutrient solution, enter Row orientation domestication, is an acclimation period per 12-72h, until nitrate removal rate is stable in 95-100%；2) inoculation of system and device and startup stageBy sulphur powder, iron powder with 1:1 ratio and the mixing of above-mentioned activated sludge, pass through liquid level gauge control Liquid level processed water inlet, the rotating speed of electric blender is set in 500r/min, by membrane module water outlet, during water outlet Between be set as 7min, stopping water discharging time is 3min, and the concentration of nitrate anion-nitrogen is in startup stage water inlet 30mg/L, hydraulic detention time 3.0h, nitrate removal rate shows to start up to more than 95% in water outlet Success；3) system and device stable operationAfter system and device starts successfully, in different hydraulic detention times and the bar of water inlet nitrate anion-nitrogen concentration Under part, system at least stable operation 5 days, while monitor NO3 --N、NO2 --N、SO4 2-And pH value Change；The cleaning frequency of the membrane module is 20 days.
- 10. a kind of S-Fe collaboration autotrophic denitrifications that are based on as claimed in claim 6 remove nitrate in water removal System and device application, it is characterised in that：The application is preferably to handle the underground of pollution of nitrate nitrogen The surface water of water or the relatively low pollution of nitrate nitrogen of organic carbon source.
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| CN109650536A (en) * | 2019-01-03 | 2019-04-19 | 大连理工大学 | The device and method of ammonia nitrogen anaerobism in-situ treatment based on ferrikinetics driving |
| CN110357367A (en) * | 2019-08-15 | 2019-10-22 | 沈阳环境科学研究院 | Based on low-intensity magnetic field-sewage water denitrification dephosphorization apparatus associated with Zero-valent Iron-MABR |
| CN111320268A (en) * | 2020-03-12 | 2020-06-23 | 河海大学 | Autotrophic and heterotrophic synergetic denitrification nitrogen removal method |
| CN111592172A (en) * | 2020-04-09 | 2020-08-28 | 北京恩菲环保技术有限公司 | Sewage denitrification baffling reactor |
| CN113461170A (en) * | 2021-05-27 | 2021-10-01 | 安徽中源锦天环境科技股份有限公司 | Method and equipment for rapidly culturing autotrophic denitrification cable bacteria and application |
| US20220332615A1 (en) * | 2019-09-25 | 2022-10-20 | West Virginia University | Ferric Iron-Dosed Anaerobic Biological Wastewater Treatment Technology |
| CN118420117A (en) * | 2024-07-01 | 2024-08-02 | 北京大学深圳研究生院 | Domestication method of sulfur-iron mixed autotrophic active sludge for degrading drugs and sewage treatment method for degrading drugs |
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| CN109650536A (en) * | 2019-01-03 | 2019-04-19 | 大连理工大学 | The device and method of ammonia nitrogen anaerobism in-situ treatment based on ferrikinetics driving |
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| CN113461170A (en) * | 2021-05-27 | 2021-10-01 | 安徽中源锦天环境科技股份有限公司 | Method and equipment for rapidly culturing autotrophic denitrification cable bacteria and application |
| CN118420117A (en) * | 2024-07-01 | 2024-08-02 | 北京大学深圳研究生院 | Domestication method of sulfur-iron mixed autotrophic active sludge for degrading drugs and sewage treatment method for degrading drugs |
| CN118420117B (en) * | 2024-07-01 | 2024-09-13 | 北京大学深圳研究生院 | Domestication method of sulfur-iron mixed autotrophic active sludge for degrading drugs and sewage treatment method for degrading drugs |
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