CN106277357A - Autotrophic denitrification system start-up that a kind of floc sludge and granule sludge coexist and Effec-tive Function method - Google Patents

Autotrophic denitrification system start-up that a kind of floc sludge and granule sludge coexist and Effec-tive Function method Download PDF

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CN106277357A
CN106277357A CN201610743026.4A CN201610743026A CN106277357A CN 106277357 A CN106277357 A CN 106277357A CN 201610743026 A CN201610743026 A CN 201610743026A CN 106277357 A CN106277357 A CN 106277357A
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sludge
granule sludge
time
cotton
nitrogen
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CN106277357B (en
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李柏林
李江涛
孙晓辉
李晔
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Wuhan University of Technology WUT
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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
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • 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
    • C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/004—Apparatus and plants for the biological treatment of water, waste water or sewage comprising a selector reactor for promoting floc-forming or other bacteria
    • 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
    • C02F2209/02—Temperature
    • 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
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • 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
    • C02F2209/14—NH3-N
    • 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
    • C02F2209/15—N03-N
    • 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
    • C02F2209/16—Total nitrogen (tkN-N)
    • 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
    • C02F2209/22—O2

Abstract

The present invention provides the autotrophic denitrification system start-up and Effec-tive Function method that a kind of floc sludge and granule sludge coexist: first inoculate from the mud in short distance nitration and anaerobic ammonia oxidation reactor, under conditions of intermittent aerating, step up influent ammonium concentration to start, it is shortened by the anaerobic stages time again, aeration mode is changed into continuous aeration pattern, to realize one-step autotrophic nitrogen removal system start-up.After starting successfully, by controlling the cotton-shaped Bacterial community stable with the method for granule sludge ratio structure, and adjust reaction time according to running situation, it is achieved the efficient denitrification of system.The Starting mode that the present invention provides is simple rapidly, and constructed system run all right is efficient, to one-step autotrophic nitrogen removal system and other cotton-shaped with granule sludge symbiotic system operation, there is important references meaning.

Description

Autotrophic denitrification system start-up that a kind of floc sludge and granule sludge coexist and efficiently transporting Row method
Technical field
The invention belongs to bio-denitrifying sewage field, be specifically related to a kind of floc sludge and autotrophy that granule sludge coexists takes off Nitrogen system starts and Effec-tive Function method.
Background technology
Along with the fast development of China's economy, water pollution is increasingly severe, and nitrogen is the major pollutants of eutrophication, Water body environment is had impact greatly.At present, the many employings in municipal sewage plant A2The denitrification process such as/O, oxidation ditch.But by Need additional organic carbon source in tradition denitrification process, consume substantial amounts of basicity and the energy.
Autotrophic denitrification refers to, by ammonia oxidizing bacteria (AOB), ammonium oxidation becomes nitrite nitrogen, anaerobic ammonia oxidizing bacteria (AAOB) again the nitrite nitrogen that AOB produces is become nitrogen with remaining mineralized nitrogen, it is achieved sewage water denitrification processes.On Hipper Since century the nineties proposition one-step autotrophic nitrogen removal, due to its whole process autotrophic, it is not necessary to additional organic carbon source, raw relative to tradition Thing denitrification process aeration rate is less, it is possible to be applicable to the advantages such as multiple reactor it is considered to be the reason of energy-efficient denitrification process Want to select, there is good development prospect.But, present stage is longer due to the startup cycle of whole process autotrophic denitrification system, flora Structure is complicated, it is difficult to realize the operation of stability and high efficiency, hinders the application in practice of this technique and development.In recent years, anaerobism Ammonium oxidation granular sludge has the rate of settling soon because of it, and being not susceptible to the advantages such as sludge bulking has become the focus of research.Due to Simple anaerobic ammonium oxidation granular sludge is difficult in adapt to aerobic environment, can consume dissolved oxygen by adding floc sludge, it is possible to Protection AAOB is impacted by dissolved oxygen, substrate necessary to the nitrite nitrogen simultaneously produced also AAOB metabolism.Therefore pass through into Ripe short distance nitration mud and anaerobic ammonium oxidation sludge can not only realize the quick startup of this technique, the most diversified flora Form also improves the stability of system, is conducive to the fast-growth of different flora, for realizing the fast of self-supported denitrification reactor Speed starts and efficient stable runs tool and is of great significance.
Summary of the invention
It is an object of the invention to provide a kind of floc sludge and autotrophic denitrification system start-up that granule sludge coexists and efficiently Operation method, it is possible to realize cotton-shaped and stablizing of granule sludge in Full Autotrophic Ammonium Removal Process and coexist and work in coordination with efficient denitrification, Simple, and for other cotton-shaped denitrification systems coexisted with granule, also there is certain suitability.
To achieve these goals, the technical solution used in the present invention is as follows:
1. floc sludge and granule sludge coexist autotrophic denitrification system start-up and an Effec-tive Function method, use sequence to criticize Formula reactor, comprises the steps:
1) cotton-shaped and granule sludge inoculative proportion is arranged:
Seed sludge is from the granule sludge in the anaerobic ammonia oxidation reactor of stable operation and short distance nitration reactor Floc sludge, floc sludge concentration is 3-4g/L, and its ammonia nitrogen removal load is 0.35kgN/m3/ d, granule sludge concentration is 4- 5g/L, anaerobic ammoxidation activity is 0.22gN/gMLVSS/d.During inoculation, the mass ratio of floc sludge and granule sludge is 2-3；
2) startup stage that cotton-shaped and granule sludge symbiotic system intermittent aerating becoming substrate:
Water inlet uses the simulated wastewater of artificial preparation, and inlet flow-patterm controls at 7.4-8.2, and temperature is 28-32 DEG C, and dissolved oxygen is dense Degree is 1.0-1.2mg/L, and reaction time is 12h；System uses intermittent aerating mode, and aeration section with the ratio of anaerobism section time is 1:2；First controlling influent ammonia nitrogen mass concentration is 100mg/L, when mineralized nitrogen rate reaches more than 85%, improves influent ammonia nitrogen Mass concentration, the amplitude every time improved is 20mg/L；When influent ammonia nitrogen mass concentration reaches 200mg/L, ammonia nitrogen removal frank continuous 3 When it reaches 85%, intermittent aerating becomes matrix phase and has started；
3) startup stage that cotton-shaped and granule sludge symbiotic system becoming aeration time:
This stage keeps influent ammonium concentration to be 200mg/L, shortens the anaerobism section time, and reduction amplitude is 1-2h, presses simultaneously The amplitude reduction aeration rate of 10%-15%；After adjusting, treat that mineralized nitrogen rate and nitrogen removal rate recover respectively to 85% He every time 75%, and stablize 2-4 days, then adjust, until the anaerobism section time is 0h, reactor transfers continuous aeration to and runs mould. next time Formula, i.e. aeration time transitional stage has started；
4) the cotton-shaped and granule sludge symbiotic system mud ratio regulation and control Effec-tive Function stage:
After entering cotton-shaped and high efficiency particulate operation phase, the sedimentation time is set to 8-12min, and speed of agitator is 80- 100rpm/min, control floc sludge and granule sludge mass ratio are between 2.02-2.31, and influent ammonium concentration continues to keep 200mg/L, if water outlet nitrite nitrogen concentration is more than 20mg/L, and when mineralized nitrogen rate is less than 85%, by the amplitude of 10%-20% Reduce aeration rate；If water outlet nitrite nitrogen concentration is less than 20mg/L, but when mineralized nitrogen rate is less than 85%, by 10%-20%'s Amplitude increases aeration rate；When cotton-shaped with granule sludge ratio less than 2.02 time, increase the sedimentation time to 12-15min, will go out simultaneously Floc sludge in water tank returns and adds to reactor；When cotton-shaped with granule sludge ratio more than 2.31 time, shorten the sedimentation time extremely 4-8min, increases to 110-130rpm/min by stir speed (S.S.) simultaneously.When mineralized nitrogen rate is more than 90%, and nitrogen removal rate is more than When 80%, reaction time reduces 1-2h.
The invention has the beneficial effects as follows:
1. the present invention is according to cotton-shaped and granule sludge interaction rule, proposes innovatively to control cotton-shaped and granule sludge The method of ratio, is i.e. regulated and controled by mud ratio, makes the mud of different shape in system maintain good growth conditions, system Run more stable.
The most proposed by the invention method becoming aeration time can make anaerobic bacteria flora adaptation condition in system effectively Change, keeps stablizing of system Bacterial community.
3. involved in present invention aeration time reduces the method for aeration rate and is conducive to AAOB progressively while reducing Adapt to aerobic environment.
4. the present invention proposes startup and operation method can promote that AOB is in the enrichment and growth on granule sludge surface efficiently. Can consume oxygen at the AOB of granule sludge surface enrichment, protection AAOB impacts from oxygen, the nitrous acid that AOB produces simultaneously Salt also provides substrate for AAOB.
The ratio of the seed sludge being 5. previously mentioned in the present invention combines cotton-shaped, granule sludge concentration and processes ammonia nitrogen Ability is determined, enables the mud of different shape to adapt to one-step autotrophic nitrogen removal system quickly.
6. the present invention carries out the regulation and control of mud ratio by sedimentation time and stir speed (S.S.), can reach control ratio faster Purpose.
7. the present invention inoculates short distance nitration mud and the anaerobic ammonium oxidation sludge of maturation, and it is higher that mud adapts to ability, starts Time is shorter.
8. the present invention provides startup and Effec-tive Function method are compared with traditional wastewater biological denitrification process, it is not necessary to extra Add organic carbon source, and required aeration rate is lower, is greatly saved operating cost.
9. the present invention is not only suitable for the quick startup under high ammonia-nitrogen condition of the one-step autotrophic nitrogen removal technique, is simultaneously applicable to The quick startup in municipal sewage of this technique.
Accompanying drawing explanation
Fig. 1 is SBR assay device schematic diagram of the present invention；
Fig. 2 is that the present invention starts and Effec-tive Function stage Inlet and outlet water NH4 +、NO2 -、NO3 -Mass concentration change curve；
Fig. 3 is that the present invention starts and Effec-tive Function stage ammonia nitrogen and nitrogen removal rate change curve.
In figure: 1, water tank inlet；2, water inlet water pump；3, motor；4, water-bath layer outlet；5, water-bath layer；6, aeration plate；7、 Water-bath layer water inlet；8, stirring paddle；9, effluent water pump；10, air pump；11, water tank is gone out.
Detailed description of the invention
With embodiment, technical scheme is illustrated below in conjunction with the accompanying drawings.
Embodiment 1, is shown in Fig. 1 to Fig. 3:
The present invention provides the autotrophic denitrification system start-up and Effec-tive Function method that a kind of floc sludge and granule sludge coexist, Reactor uses the cylindrical sbr reactor device that machine glass is made, and high 40cm, diameter 15cm, effective volume is 4L, each water outlet 2L, reactor assembly includes water tank inlet 1, water inlet water pump 2, motor 3, water-bath layer outlet 4, water-bath layer 5, aeration plate 6, water-bath Layer water inlet 7, stirring paddle 8, effluent water pump 9, air pump 10, go out water tank 11 (accompanying drawing 1), use periodic training method, bag Include following steps:
1) cotton-shaped and granule sludge inoculative proportion is arranged:
Seed sludge is the short distance nitration floc sludge and anaerobic ammonium oxidation granular sludge that laboratory cultures is ripe, nitrogen of intaking It is 0.35kgN/m that load is respectively its ammonia nitrogen removal load3/ d, anaerobic ammoxidation activity is 0.22gN/gMLVSS/d, by quality Than being 2 short distance nitration floc sludge and anaerobic ammonium oxidation granular sludge to be mixed, inoculation cumulative volume is 1.2L；
2) startup stage that cotton-shaped and granule sludge symbiotic system intermittent aerating becoming substrate:
Water inlet uses artificial distribution, by NH4Cl、NaNO2With NaHCO3Formulated, influent ammonium concentration is 100mg/L, Phosphate concn be 2-4mg/L, pH be 7.56-8.07, aeration use air compressor air inlet, spinner flowmeter control aeration Amount, control reaction temperature is at 28-32 DEG C, and the hydraulic detention time of initial start stage sets according to the original state of seed sludge Fixed, reaction time is 12h, is divided into aeration phase and anaerobic stages, operation time to be respectively 4h and 8h, and aeration rate is initially set 1.1L/min.The 1st day started after seed sludge, mineralized nitrogen rate only has 65%, is stepped up, to the 5th from the 3rd day My god, mineralized nitrogen rate alreadys more than 85%.Continue thereafter with raising system influent ammonium concentration.After adjusting, mineralized nitrogen rate is equal every time There is a certain degree of decline, during fall maximum, be reduced to 68%, be substantially kept at 70% in this stage mineralized nitrogen rate Above.System mineralized nitrogen rate again reaches the time of more than 85% and is generally 2-4 days, and recovery time is shorter, is initiated through 35 My god, in reactor, aeration rate is adjusted to 0.8L/min, and mineralized nitrogen rate reaches more than 90%, enters next stage；
3) startup stage that cotton-shaped and granule sludge symbiotic system becoming aeration time:
After stable in two days, the 37th day anaerobism time was reduced to 4h, and ammonia nitrogen removal frank still reaches 88%, two days later Directly it is maintained at more than 85%.39th day, being reduced to 2h the anaerobism section time, after adjusting one day, ammonia nitrogen removal frank reaches 91%.The Within 41 days, aeration pattern is completely transformed into continuous aeration pattern.Suitably turn down reactor after the reduction anaerobism section time the most every time Aeration rate.In order to ensure stablizing of system, aeration rate is adjusted according to the amplitude of 10-15%, and to the last aeration rate drops to 0.6L/min.Within 45th day, mineralized nitrogen rate remains at more than 85%, and nitrogen removal rate is more than 80%, it is believed that this stage success Start, enter the Effec-tive Function stage；
4) the cotton-shaped and granule sludge symbiotic system mud ratio regulation and control Effec-tive Function stage:
This stage influent ammonium concentration is 180-220mg/L, and reactor aeration rate, between 0.4-0.6L/min, maintains wadding The mass ratio of shape mud and granule sludge is between 2.02-2.23.Run to the 46th day, ammonia nitrogen removal frank be maintained at 85% with On, reactor cycle of operation is shortened to 11h, to maintain efficient denitrogenation purpose.After adjustment, mineralized nitrogen rate changes not Greatly, between 80%-90%.At the 48th day, in system, floc sludge amount reduced, the mass ratio fall of floc sludge and granule sludge Low by 1.95, to lead to and will extend to 13min the sedimentation time, mixing speed is set to the floc sludge weight that 110rpm/min will discharge simultaneously Newly it is added back in reactor.Mass ratio at the 52nd day floc sludge and granule sludge returns to more than 2.02.Whole efficient fortune Between the departure date, water outlet ammonia nitrogen, nitrite nitrogen and nitrate are the most relatively low, and mineralized nitrogen rate is maintained at more than 85%, and total nitrogen is removed Rate substantially remains in more than 75%.53rd day, reactor cycle of operation foreshortened to 9h, and mineralized nitrogen rate is reduced to 82%, now Increase dissolved oxygen to 0.5mg/L.Running to the 55th day, mineralized nitrogen rate is recovered to 90%, and nitrogen removal rate is 85%.The most every The operation time of secondary shortening 1h.By the 74th day, the reactor cycle was 4h, and dissolved oxygen concentration is 0.49-0.55mg/L, system total nitrogen Elimination capacity is stable at 2.4-2.7kgN/m3Between/d.
In experimentation, to reactor start-up and Effec-tive Function stage Inlet and outlet water NH4 +、NO2 -、NO3 -Mass concentration change into Having gone tracking and testing, result is shown in accompanying drawing 2；Accompanying drawing 3 is shown in startup and Effec-tive Function stage ammonia nitrogen and nitrogen removal rate situation of change.
Above example is only in order to illustrative not limiting technical scheme, although the present invention is entered by above-described embodiment Gone detailed description, the person skilled of this area it is understood that the present invention can be modified or replaces on an equal basis, but Any amendment and local without departing from spirit and scope of the invention are replaced and all should be contained in scope of the presently claimed invention.

Claims (1)

1. floc sludge and granule sludge coexist autotrophic denitrification system start-up and an Effec-tive Function method, use batch-type anti- Answer device, it is characterised in that: comprise the steps:
1) cotton-shaped and granule sludge inoculative proportion is arranged:
Seed sludge from the floc sludge in the short distance nitration reactor of stable operation and anaerobic ammonia oxidation reactor Grain mud, floc sludge concentration is 3-4g/L, and granule sludge concentration is 4-5g/L, floc sludge and the matter of granule sludge during inoculation Amount ratio is 2-3；
2) startup stage that cotton-shaped and granule sludge symbiotic system intermittent aerating becoming substrate:
Water inlet uses the simulated wastewater of artificial preparation, and inlet flow-patterm controls at 7.4-8.2, and temperature is 28-32 DEG C, controls aeration rate not Becoming, reaction time is 12h；System uses intermittent aerating mode, aeration section to be 1:2 with the ratio of anaerobism section time；First keep Influent ammonia nitrogen mass concentration is constant, when mineralized nitrogen rate reaches more than 85%, improve influent ammonia nitrogen mass concentration, every time according to Certain amplitude improves；When influent ammonia nitrogen mass concentration reaches initial 180%-220%, and ammonia nitrogen removal frank is for three days on end When reaching 85%, intermittent aerating becomes matrix phase and has started；
3) startup stage that cotton-shaped and granule sludge symbiotic system becoming aeration time:
This stage keeps influent ammonium concentration constant, shortens the anaerobism section time, reduces aeration rate simultaneously；After adjusting, treat ammonia every time Conversion rate of nitrogen and nitrogen removal rate recover respectively to 85% and 75%, and stablize 2-4 days, then adjust next time, until detesting The oxygen section time is 0h, and stablizes 4 days, enters the Effec-tive Function stage；
4) the cotton-shaped and granule sludge symbiotic system mud ratio regulation and control Effec-tive Function stage:
After entering the cotton-shaped and granule sludge symbiotic system ratio regulation and control Effec-tive Function stage, the sedimentation time is set to 8-12min, stirs Mixing rotating speed is 80-100rpm/min, and control floc sludge and granule sludge mass ratio are between 2.02-2.31, and influent ammonia nitrogen is dense Degree keeps constant, according to water outlet nitrite nitrogen concentration and mineralized nitrogen rate, is adjusted aeration rate；When cotton-shaped and granule sludge When ratio is less than 2.02, increases the sedimentation time to 12-15min, floc sludge in water tank will be gone out simultaneously and return and add to reactor；When Cotton-shaped with granule sludge ratio more than 2.31 time, shorten the sedimentation time to 4-8min, stir speed (S.S.) increased to 110-simultaneously 130rpm/min.When mineralized nitrogen rate is more than 90%, when nitrogen removal rate is more than 80%, reduce 1-2h reaction time.
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CN107032488A (en) * 2017-04-24 2017-08-11 北京工业大学 A kind of method that municipal sewage short distance nitration is realized by sludge dual reflux AOA techniques
CN107265639A (en) * 2017-07-01 2017-10-20 清华大学 A kind of integral split-phase combined type denitrogenation of waste water device and a kind of method of denitrogenation of waste water
CN108408897A (en) * 2018-03-13 2018-08-17 北京工业大学 The intermittent aerating real-time control method of integrated short distance nitration Anammox dephosphorization simultaneously
CN109354173A (en) * 2018-12-05 2019-02-19 青岛思普润水处理股份有限公司 A kind of CANON system and operation method based on MBBR
CN109354172A (en) * 2018-12-05 2019-02-19 青岛思普润水处理股份有限公司 A kind of quick start method of the CANON system based on MBBR
CN109761352A (en) * 2019-01-29 2019-05-17 北京首创股份有限公司 The aerobic particle mud processing method of energy stability and high efficiency processing low-carbon-source sewage
CN111517460A (en) * 2020-04-13 2020-08-11 上海应用技术大学 Domestication method of anaerobic granular sludge
CN112939213A (en) * 2021-04-01 2021-06-11 北京工业大学 Rapid CANON granular sludge starting method based on hydraulic screening intermittent starvation

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CN104529056A (en) * 2014-11-29 2015-04-22 北京工业大学 Method for realizing autotrophic nitrogen removal of city sewage through symbiosis of flocculent sludge and granular sludge
CN105016468A (en) * 2015-08-03 2015-11-04 哈尔滨工业大学 AOB-AnAOB (ammonia oxidizing bacteria-anaerobic ammonia oxidizing bacteria) granular sludge and preparation method thereof as well as method for treating wastewater by using autotrophic nitrogen removal of AOB-AnAOB granular sludge

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CN104529056A (en) * 2014-11-29 2015-04-22 北京工业大学 Method for realizing autotrophic nitrogen removal of city sewage through symbiosis of flocculent sludge and granular sludge
CN105016468A (en) * 2015-08-03 2015-11-04 哈尔滨工业大学 AOB-AnAOB (ammonia oxidizing bacteria-anaerobic ammonia oxidizing bacteria) granular sludge and preparation method thereof as well as method for treating wastewater by using autotrophic nitrogen removal of AOB-AnAOB granular sludge

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Publication number Priority date Publication date Assignee Title
CN107032488A (en) * 2017-04-24 2017-08-11 北京工业大学 A kind of method that municipal sewage short distance nitration is realized by sludge dual reflux AOA techniques
CN107265639A (en) * 2017-07-01 2017-10-20 清华大学 A kind of integral split-phase combined type denitrogenation of waste water device and a kind of method of denitrogenation of waste water
CN107265639B (en) * 2017-07-01 2020-04-28 清华大学 Integrated split-phase combined wastewater denitrification device and wastewater denitrification method
CN108408897A (en) * 2018-03-13 2018-08-17 北京工业大学 The intermittent aerating real-time control method of integrated short distance nitration Anammox dephosphorization simultaneously
CN108408897B (en) * 2018-03-13 2020-10-13 北京工业大学 Integrated short-cut nitrification anaerobic ammonia oxidation and phosphorus removal intermittent aeration real-time control method
CN109354173A (en) * 2018-12-05 2019-02-19 青岛思普润水处理股份有限公司 A kind of CANON system and operation method based on MBBR
CN109354172A (en) * 2018-12-05 2019-02-19 青岛思普润水处理股份有限公司 A kind of quick start method of the CANON system based on MBBR
CN109354173B (en) * 2018-12-05 2023-06-16 青岛思普润水处理股份有限公司 CANON system based on MBBR and operation method
CN109761352A (en) * 2019-01-29 2019-05-17 北京首创股份有限公司 The aerobic particle mud processing method of energy stability and high efficiency processing low-carbon-source sewage
CN111517460A (en) * 2020-04-13 2020-08-11 上海应用技术大学 Domestication method of anaerobic granular sludge
CN112939213A (en) * 2021-04-01 2021-06-11 北京工业大学 Rapid CANON granular sludge starting method based on hydraulic screening intermittent starvation
CN112939213B (en) * 2021-04-01 2023-01-31 北京工业大学 Rapid CANON granular sludge starting method based on hydraulic screening intermittent starvation

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