CN108191047A - A kind of method based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification - Google Patents
A kind of method based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification Download PDFInfo
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- CN108191047A CN108191047A CN201711477780.9A CN201711477780A CN108191047A CN 108191047 A CN108191047 A CN 108191047A CN 201711477780 A CN201711477780 A CN 201711477780A CN 108191047 A CN108191047 A CN 108191047A
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention belongs to the technical fields of environmental project Sewage Biological Treatment, disclose a kind of method based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification.The method is：(1) culture of aerobic nitrifying sludge is carried out in membrane bioreactor；(2) after the completion of cultivating, the material with ammonia nitrogen absorption characteristic is added into membrane bioreactor, ammonia nitrogen waste water is passed through in membrane bioreactor again, under 20~40 DEG C and 0.1~7.0mg/L dissolved oxygens, after certain hydraulic detention time reaction, water outlet, realizes the efficient stable nitrosation of ammonia nitrogen waste water.The method of the present invention, which can not only be stablized, realizes the efficient nitrosation of reactor, but also can promote the impact resistance of reactor, reduces toxic effect of the high-concentration ammonia nitrogenous wastewater to microorganism；Method is simple, and floor space is small；And the NH_3-N treating load higher of the present invention, nitrosation more stability and high efficiency.
Description
Technical field
The invention belongs to environmental project field of biological sewage treatment, and in particular to one kind is based on ammonia nitrogen absorption material reinforcement film
The method of bioreactor Stable short-cut nitrosification, suitable for inorganic chemical industry, chemical fertilizer industry, printing and dyeing industry, metal finishing industry,
Circuit-board industry, landfill leachate etc. contain the processing compared with wastewater with high ammonia nitrogen concentration.
Background technology
Ammonia nitrogen waste water for economical and energy saving is handled, the anaerobism ammonia oxygen based on autotrophic type microbiological anaerobic ammonia oxidation bacteria
Chemical industry skill becomes the biological denitrification process of current people first choice.According to the principle that Anammox reacts, anaerobic ammonia oxidation process
It is nitrite nitrogen only to need the mineralized nitrogen of half or so, and entire denitrification process do not need to carbon source, compared to nitrifying anti-nitre completely
Chemical industry skill and nitrosation denitrification process, can save more than 60% and more than 35% aeration energy consumption respectively, while avoid anti-nitre
Change carbon source to add, it can significantly energy saving consumption and the cost using carbon source, technical advantage be fairly obvious.However, although
Anaerobic ammonia oxidation process has apparent advantage, how to stablize the nitrosation for realizing ammonia nitrogen waste water, to supply the ammonia of proper ratio
Water inlet of the waste water of nitrogen and nitrous nitrogen concentration as anaerobic ammonia oxidation process is limitation anaerobic ammonia oxidation process engineering application
One of bottleneck.
At present, realizing the mode of ammonia nitrogen waste water nitrosation mainly has high temperature, low dissolved oxygen control, intermittent aerating method, dissociates
Ammonia control methods etc..High temperature mode is times growth speed ratio nitrobacteria using nitrite bacteria (AOB) under the high temperature conditions
(NOB) height promotes the AOB to become dominant bacteria to realize the nitrosation of system.But this mode is in practical applications to water temperature
It is narrow there are accommodation it is required that high, energy consumption and it is of high cost the problems such as.Low dissolved oxygen control is presently the most common realization ammonia nitrogen
The method of waste water nitrosation by maintaining the concentration of low dissolved oxygen in reactor, is more than NOB using the oxygen semi-saturation coefficient of AOB
Oxygen semi-saturation coefficient gradually inhibit the growth of NOB, AOB in reactor is made to become dominant bacteria and realize nitrosation.The party
Formula nitrosation is with obvious effects, but dissolved oxygen concentration is low often so that the factor being supplied in limit microorganism growth of oxygen, reaction
The load of device is usually relatively low, and exists since dissolved oxygen controls the ineffective risk that NOB is caused to increase rapidly.Intermittent aerating method is main
It is by controlling the aeration time in reaction process, is more easy to the conversion of ammonia nitrogen be controlled to stay in using the oxygen in water with AOB
For Nitrification Stage to realize nitrosation, this method still falls within the control method of low dissolved oxygen.This method is tight to process control requirements
Lattice are unfavorable for being engineered application on a large scale.Free ammonia control methods are with the respective different free ammonia inhibition concentrations of AOB and NOB
Based on range, the inhibition of NOB is realized, and then realize nitrosation by controlling the concentration of free ammonia size.However at practical place
During reason, due to the continuous action of microorganism, ammonia nitrogen concentration can gradually decline so that the concentration of free ammonia also gradually declines, right
NOB inhibiting effect equally gradually weakens, and can not realize the purpose of stabilization checking NOB, and nitrosation effect is unable to reach stable expire
Meaning degree.
Membrane bioreactor as a kind of novel biological treatment, because its processing volume load is big, floor space is small,
Automatic controlling level height has been more and more widely used in recent years in water treatment field, therefore using membrane bioreactor come real
The nitrosation of existing ammonia nitrogen waste water has good application prospect.At present, the collection of reports of nitrosation is realized using membrane bioreactor
In low dissolved oxygen control or intermittent aerating mode.The technology of dissolved oxygen control mode has a kind of " membrane bioreactor short distance
The quick start method (ZL201310477480.6) of nitration processes " (method one) and a kind of " Membrane Bioreactor for Wastewater Treatment life
The method (ZL 201310477480.6) that sewage nitrosation quickly starts " (method two).The two methods are all anti-using control
After device low dissolved oxygen is answered to start ammonia nitrogen waste water nitrosation, then by adjusting hydraulic detention time realize the part nitrous of waste water
Change.The ammonia nitrogen waste water concentration scope of application is can be seen that from foregoing invention patent and is essentially 70~200mg/L, passes through low dissolved oxygen
The nitrosation of reactor is realized, but low concentration dissolved oxygen similarly limits the growth of AOB；Mentioned membrane bioreactor
Ammonia nitrogen influent load be less than 1kg NH4 +-N/(m3Day), high excellent of Membrane Bioreactor for Wastewater Treatment load is not embodied
Gesture；Applicable ammonia nitrogen concentration narrow range, widely used prospect are little simultaneously.And utilize the report of intermittent aerating method realization nitrosation
Road has " a kind of method (CN 201710167963.4) that membrane bioreactor quickly starts short distance nitration ", is exposed by interval
The mode of gas realizes reactor alternate run under aerobic-anoxic environment, then realizes nitrous by shortening hydraulic detention time
Change.The ammonia nitrogen in waste water concentration range of this method processing is only 140~160mg/L, is applicable in ammonia nitrogen concentration narrow range；Realize nitrosation
The step of it is cumbersome, continuous switching aeration start and stop increase the difficulty of technology implementation, are unfavorable for shortening the operations such as residence time
The popularization and application of technology；The highest influent ammonia nitrogen loading of this method is only 1.12~1.28NH4 +-N/(m3Day), also do not send out
Wave the advantage of membrane bioreactor high load capacity.Therefore, with low dissolved oxygen control or the side of intermittent aerating in membrane bioreactor
Formula realizes the nitrosation of ammonia nitrogen waste water, and there are apparent limitations.At present, it there is no to control using free ammonia and realize membrane biological reaction
Device realizes the report of ammonia nitrogen waste water nitrosation.It makes main reason is that ammonia nitrogen concentration can decline with the increase in reaction time
It obtains the concentration of free ammonia to be unable to maintain that in the range for inhibiting NOB, it is difficult to realize stable nitrosation.Therefore, how steadily to maintain
Suitable the concentration of free ammonia in reactor becomes the pass that membrane bioreactor Stable short-cut nitrosification is realized in a manner that free ammonia controls
Key.
Absorption method is a kind of common ammonia nitrogen waste water treatment method.By using there is the material of ammonia nitrogen absorption to ammonia
The characterization of adsorption of nitrogen achievees the purpose that remove ammonia nitrogen in waste water.Since there are adsorption equilibrium phenomenons in adsorption process so that exist
A certain amount of adsorbate residual is in the reactor.This explanation can be by adding ammonia nitrogen absorption material in the reactor, such as natural boiling
Stone, artificial zeolite, medical stone etc., by the ammonia nitrogen in their ammonia nitrogen absorptions in waste water and equilibrium adsorption waste water, while
The surface of these sorbing materials, maintains certain the concentration of free ammonia, so maintain free ammonia in reactor inhibit NOB without
Inhibit the concentration range of AOB, so as to fulfill the nitrosation of reactor.Membrane bioreactor is directed to, someone does not utilize ammonia nitrogen
Sorbing material realizes the Stable short-cut nitrosification method of membrane bioreactor.
Invention content
In order to play and good, the advantages that operating load is high using Membrane Bioreactor for Wastewater Treatment effect, the present invention provides one
Method of the kind based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification, by using a certain proportion of ammonia nitrogen of filling
Sorbing material (natural zeolite, artificial zeolite or medical stone etc.) controls the concentration of free ammonia model suitable in membrane bioreactor
It encloses, can also provide sufficient matrix for AOB while significant NOB inhibiting effect is kept (including sufficient ammonia nitrogen and dissolving
Oxygen), and then realize the efficient stable nitrosation of membrane bioreactor, and can reactor be regulated and controled by the change of operating parameter and be discharged
Ammonia nitrogen nitrite nitrogen ratio, provide suitable water inlet for subsequent anaerobic ammonia oxidation process.
A kind of method based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification, includes the following steps：
(1) culture of aerobic nitrifying sludge is carried out in membrane bioreactor；
(2) material with ammonia nitrogen absorption characteristic is added in the membrane bioreactor that culture is completed in step (1), then will
Ammonia nitrogen waste water is passed through in membrane bioreactor, anti-by certain hydraulic detention time under certain temperature and dissolved oxygen concentration
Ying Hou, water outlet, realizes the efficient stable nitrosation of ammonia nitrogen waste water.It is described water outlet Central Plains ammonia nitrogen waste water part mineralized nitrogen be
Nitrite nitrogen.The water outlet is used for the water inlet of anaerobic ammonia oxidation process.
The culture of aerobic nitrifying sludge described in step (1), specially：It is dirty that aerobic activity is inoculated in membrane bioreactor
Mud, sludge concentration are 3000~10000mg/L, the control of membrane bioreactor dissolved oxygen in 0.1~7.0mg/L, temperature for 20~
40 DEG C, add in ammonia nitrogen, ammonia nitrogen concentration is 50~200mg/L (preferably 50~100mg/L), carries out bored exposure, the bored exposure time for 1~
3 days, until membrane bioreactor water outlet ammonia nitrogen removal frank is more than completion culture after more than 90%；
Material with ammonia nitrogen absorption characteristic described in step (2) is natural zeolite, one kind in artificial zeolite, medical stone
More than.
Step (2) material with ammonia nitrogen absorption characteristic, grain size are 80~400 mesh, and dosage is 1%~10%wt
(ammonia nitrogen absorption material dosage is 1%~10% of liquid quality in membrane bioreactor).
Ammonia nitrogen waste water described in step (2), including all kinds of nitrogen-containing wastewaters and pretreated nitrogen-containing wastewater, wherein ammonia
Nitrogen concentration is 100~600mg/L (needing to dilute if concentration higher), and pH is 7.0~9.5.
It is 20~40 DEG C that certain temperature described in step (2), which refers in reactor water temperature, the dissolved oxygen concentration for 0.1~
7.0mg/L, the hydraulic detention time are 0.5~8h；
Nitrite nitrogen and ammonia nitrogen mass ratio are (1.0~1.5) in being discharged described in step (2)：1.
Efficient stable nitrosation described in step (2) refer to the water outlet nitrite accumulation rate of membrane bioreactor for 90% with
On.
Dissolved oxygen described in step (2) is realized by being aerated.
The principle of the present invention is：
Free ammonia is of different sizes to the inhibiting effect of AOB and NOB in waste water, when free ammonia is 0.1~1.0mg/L, NOB
Start to be suppressed effect, free ammonia is higher, and inhibiting effect is bigger；And when free ammonia is 10~150mg/L, AOB just can quilt
Inhibit.Therefore, the suitable the concentration of free ammonia range of control in waste water, may be such that NOB by strong inhibited and AOB is not inhibited
Or it is suppressed effect it is small, and then ensure ammonia nitrogen biochemical conversion rest on the nitrosation reaction stage, to realize Stable short-cut nitrosification.Base
In this, the present invention adds the material with ammonia nitrogen absorption characteristic in membrane bioreactor, accelerates ammonia nitrogen by aeration agitation
Absorption reaches equilibrium state, and sufficient dissolved oxygen is provided for microorganism, recycles the adsorption equilibrium phenomenon of ammonia nitrogen absorption material
Ammonia nitrogen concentration to realize in membrane bioreactor is stably maintained at optimum range, and then maintains the concentration of free ammonia in reactor
The state of AOB is not inhibited substantially in inhibition NOB.On this basis, with the continuous service of reactor, the quick quilts of NOB
Inhibit so that being eliminated, and AOB is proliferated rapidly and becomes dominant bacteria, so as to ensure that the nitrosation effect in reactor, in fact
The efficient stable nitrosation of membrane bioreactor is showed.
The present invention has the following advantages and technique effect：
(1) present invention controls suitable the concentration of free ammonia range by building ammonia nitrogen absorption balance, can not only stablize reality
The efficient nitrosation effect of existing reactor, and the impact resistance of reactor can be promoted, high-concentration ammonia nitrogenous wastewater is reduced to micro-
The toxic effect of biology；
(2) operating method of the present invention is simple, and floor space is small, and membrane bioreactor nitrous is realized compared to other modes
Change, NH_3-N treating load higher of the invention, nitrosation more stability and high efficiency；
(3) present invention can be by regulating and controlling to realize water outlet ammonia nitrogen and nitrosation concentration ratio, to obtain stable suitable anaerobism
The water inlet of ammonia oxidation process, the denitrogenation processing for Anammox provide critical support.
Description of the drawings
Fig. 1 is that the present invention is based on the signals of the device of ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification method
Figure；Wherein water feed apparatus (inlet bucket) -1, intake pump -2, fluid flowmeter -3, membrane bioreactor -4, membrane module -5, aeration
Pipe -6, water outlet pump -7, flowing water Valve -8, fluid flowmeter -9, gas flowmeter -10, air blower -11, bubble -12, ammonia nitrogen are inhaled
Enclosure material (material i.e. with ammonia nitrogen absorption characteristic) -13.
Specific embodiment
With reference to specific embodiments and the drawings, the present invention is described in further detail, however, the present invention is not limited thereto.
Fig. 1 shows for a kind of device based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification method of the present invention
It is intended to, mainly including water feed apparatus (such as：Inlet bucket) 1, membrane bioreactor 4, intake pump 2, membrane module 5, aeration tube 6, water inlet
Bucket 1, intake pump 2 pass sequentially through pipeline with membrane bioreactor 4 and connect, and membrane module 5 is set in membrane bioreactor 4, aeration
Pipe 6 is set to the bottom of membrane bioreactor 4, and aeration tube 6 is connect by pipeline with air blower 11, intake pump 2 and membrane bioreaction
The pipeline between device 4 is answered to be equipped with fluid flowmeter 3, the pipeline that aeration tube 6 is connect with air blower 11 is equipped with gas flowmeter
10；Described device further includes water outlet pump 7, flowing water Valve 8 and fluid flowmeter 9, membrane bioreactor 4, water outlet pump 7, outlet valve
Door 8 passes sequentially through pipeline with fluid flowmeter 9 and connects；Ammonia nitrogen absorption material is filled in membrane bioreactor 4 (i.e. with ammonia nitrogen
The material of characterization of adsorption) 13, it is acted on by the aeration of aeration tube 6, waste water can generate bubble 12 in membrane bioreactor 4.
It is of the invention that aerobic nitrifying sludge is first inoculated in membrane bioreactor 4 and is cultivated, complete nitrifying sludge
After culture, ammonia nitrogen absorption material (material i.e. with ammonia nitrogen absorption characteristic) 13 is added in, nitrogen-containing wastewater is then passed through into water inlet
Pump 2 is transported to from inlet bucket 1 in membrane bioreactor 4, and aeration tube 6 is into membrane bioreactor 4 under the action of air blower 11
Aeration, so as to generate aeration bubbles 12 in water, under the stirring action of aeration bubbles 12, ammonia nitrogen absorption material 13 adsorbs rapidly
The ammonia nitrogen of water inlet simultaneously reaches adsorption equilibrium state, and certain ammonia nitrogen concentration and the concentration of free ammonia are maintained in reactor, dense at this
Under degree, NOB is suppressed, and AOB is being aerated the nitrosation reaction with that can carry out stability and high efficiency under conditions of ammonia nitrogen matrix abundance, instead
It should complete, by the effect of water outlet pump 7, open flowing water Valve 8, water outlet contains higher nitrous nitrogen concentration and nitrous in water outlet
Rate realizes the Stable short-cut nitrosification of membrane bioreactor 4.
Embodiment 1
A kind of method based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification, includes the following steps：
(1) in membrane bioreactor, the aerobic nitrifying sludge that sludge concentration is 3500mg/L is added in, is in dissolved oxygen
0.1~1.0mg/L, temperature are 38 DEG C, add in ammonia nitrogen (such as：Ammonium chloride), ammonia nitrogen concentration 50mg/L carries out bored exposure, bored to expose 1 day
Afterwards, ammonia nitrogen removal frank 97.4%, culturing sludge success；
(2) after the completion of culturing sludge, the artificial zeolite that grain size is 100~200 mesh is added into membrane bioreactor, is thrown
Dosage is 1%wt；It is about again 100mg/L, nitrite nitrogen a concentration of 0.1mg/L, nitrate 0.2mg/L by ammonia nitrogen concentration,
The waste water that pH is 9.5 is passed through membrane bioreactor, and dissolved oxygen control is 0.1~1.0mg/L, and water temperature is 38 DEG C, during hydraulic retention
Between be 1h；After Membrane Bioreactor for Wastewater Treatment, water outlet ammonia nitrogen concentration be 45.3mg/L, a concentration of 54.5mg/L of nitrite nitrogen, nitre state
Nitrogen concentration is 0.2mg/L, and the nitrite accumulation rate of water outlet is 99.6%, realizes stable nitrosation effect.
Embodiment 2
A kind of method based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification, includes the following steps：
(1) in membrane bioreactor, the aerobic activated sludge that sludge concentration is 5500mg/L is added in, is in dissolved oxygen
2.0~3.0mg/L, temperature are 28 DEG C, add in ammonia nitrogen, and ammonia nitrogen concentration 200mg/L carries out bored exposure, it is bored expose 2 days after, ammonia nitrogen is gone
Except rate is 92.7%, culturing sludge success；
(2) after the completion of culturing sludge, the natural zeolite that grain size is 80~100 mesh is added into membrane bioreactor, is thrown
Dosage is 3%wt；It is about again 350mg/L, nitrite nitrogen a concentration of 0.8mg/L, nitrate 1.0mg/L by ammonia nitrogen concentration,
The waste water that pH is 7.9 is passed through membrane bioreactor, and dissolved oxygen control is 2.0~3.0mg/L, and water temperature is 28 DEG C, during hydraulic retention
Between be 2h；After Membrane Bioreactor for Wastewater Treatment, water outlet ammonia nitrogen concentration be 151.3mg/L, a concentration of 197.5mg/L of nitrite nitrogen, nitre
State nitrogen concentration is 1.2mg/L, and the nitrite accumulation rate of water outlet is 99.4%, realizes stable nitrosation effect.
Embodiment 3
A kind of method based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification, includes the following steps：
(1) in membrane bioreactor, the aerobic activated sludge that sludge concentration is 7000mg/L is added in, is in dissolved oxygen
4.0~5.0mg/L, temperature are 24 DEG C, add in ammonia nitrogen, and ammonia nitrogen concentration 200mg/L carries out bored exposure, it is bored expose 2 days after, ammonia nitrogen is gone
Except rate is 90.7%, culturing sludge success；
(2) after the completion of culturing sludge, the artificial zeolite that grain size is 200~400 mesh is added into membrane bioreactor, is thrown
Dosage is 5%wt, then by ammonia nitrogen concentration is about 600mg/L, nitrite nitrogen a concentration of 0.0mg/L, nitrate 0.0mg/L,
The waste water that pH is 8.2 is passed through membrane bioreactor, and dissolved oxygen control is 4.0~5.0mg/L, and water temperature is 24 DEG C, during hydraulic retention
Between be 4h.After Membrane Bioreactor for Wastewater Treatment, water outlet ammonia nitrogen concentration be 251.3mg/L, a concentration of 342.5mg/L of nitrite nitrogen, nitre
State nitrogen concentration is 4.2mg/L, and the nitrite accumulation rate of water outlet is 98.8%, realizes stable nitrosation effect.
Above example is the preferable embodiment of the present invention, but embodiments of the present invention are not limited by examples detailed above,
It is other it is any for away from spirit of the invention with made under principle change, modification, replacement, combine, simplification is equivalent.
Claims (7)
- A kind of 1. method based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification, it is characterised in that：Including with Lower step：(1) culture of aerobic nitrifying sludge is carried out in membrane bioreactor；(2) material with ammonia nitrogen absorption characteristic is added in the membrane bioreactor that culture is completed in the step (1), then by ammonia nitrogen Waste water is passed through in membrane bioreactor, under certain temperature and dissolved oxygen concentration, after certain hydraulic detention time reaction, Water outlet, realizes the efficient stable nitrosation of ammonia nitrogen waste water；The temperature is 20~40 DEG C, the dissolved oxygen concentration for 0.1~ 7.0mg/L, the hydraulic detention time are 0.5~8h.
- 2. the method according to claim 1 based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification, special Sign is：The culture of aerobic nitrifying sludge described in step (1), specially：Membrane bioreactor connects in membrane bioreactor Kind aerobic activated sludge, sludge concentration are 3000~10000mg/L, and membrane bioreactor dissolved oxygen is controlled in 0.1~7.0mg/ L, temperature are 20~40 DEG C, add in ammonia nitrogen, and ammonia nitrogen concentration is 50~200mg/L, carry out bored exposure, and the bored exposure time is 1~3 day, directly It is more than more than 90% rear completion culture to membrane bioreactor water outlet ammonia nitrogen removal frank.
- 3. the method according to claim 1 based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification, special Sign is：Material with ammonia nitrogen absorption characteristic described in step (2) is natural zeolite, one kind in artificial zeolite, medical stone More than.
- 4. the method according to claim 1 based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification, special Sign is：Step (2) material with ammonia nitrogen absorption characteristic, grain size are 80~400 mesh, and dosage is 1%~10%wt.
- 5. the method according to claim 1 based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification, special Sign is：Ammonia nitrogen waste water described in step (2), including all kinds of nitrogen-containing wastewaters and pretreated nitrogen-containing wastewater, wherein ammonia Nitrogen concentration is 100~600mg/L, and pH is 7.0~9.5.
- 6. the method according to claim 1 based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification, special Sign is：Nitrite nitrogen and ammonia nitrogen mass ratio are (1.0~1.5) in being discharged described in step (2)：1.
- 7. the method according to claim 1 based on ammonia nitrogen absorption material reinforcement membrane bioreactor Stable short-cut nitrosification, special Sign is：Efficient stable nitrosation described in step (2) refer to the water outlet nitrite accumulation rate of membrane bioreactor for 90% with On.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020082398A1 (en) * | 2018-10-25 | 2020-04-30 | 华南理工大学 | Method for achieving stable nitrosation of low-concentration ammonia-nitrogen wastewater |
| CN112897684A (en) * | 2021-01-20 | 2021-06-04 | 华南理工大学 | Method for realizing continuous flow stable nitrosation by using spherical suspension filler |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107473371A (en) * | 2017-08-29 | 2017-12-15 | 华南理工大学 | A kind of utilize adsorbs the method that ammonia nitrogen material reinforcement SBR realizes Stable short-cut nitrosification |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107473371A (en) * | 2017-08-29 | 2017-12-15 | 华南理工大学 | A kind of utilize adsorbs the method that ammonia nitrogen material reinforcement SBR realizes Stable short-cut nitrosification |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020082398A1 (en) * | 2018-10-25 | 2020-04-30 | 华南理工大学 | Method for achieving stable nitrosation of low-concentration ammonia-nitrogen wastewater |
| CN112897684A (en) * | 2021-01-20 | 2021-06-04 | 华南理工大学 | Method for realizing continuous flow stable nitrosation by using spherical suspension filler |
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Application publication date: 20180622 |