CN107364956A - The method and batch-type reaction unit of a kind of rapidly cultivating aerobic particle sludge - Google Patents
The method and batch-type reaction unit of a kind of rapidly cultivating aerobic particle sludge Download PDFInfo
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a kind of method of rapidly cultivating aerobic particle sludge and batch-type reaction unit.Alternately detest/aerobic sequencing batch reactor in, using municipal wastewater as influent quality, with anaerobically digested sludge and aerobic sludge (mixed proportion 1:1) it is used as seed sludge.Initial start stage; by being inoculated with high concentration sludge (20g/L), taking low sludge loading (0.056kgCOD/kgSSd) method of operation; reinforcement sludge settling property improves and the formation of initial aerobic grain nucleus, accelerates and optimize the formation of aerobic particle mud and complete pelletising process.Advantage of the invention is that particle is formed soon, solve the problems, such as that aerobic sludge granular is not easy to form and be formed overlong time；Realize aerobic particle mud " nucleus hypothesis " quick mode；The aerobic particle mud of culture, compact-sized, stability is good, and outward appearance is faint yellow, average grain diameter 750um, and sludge volume index (SVI) is 20 35mL/g, and COD, TN and TP clearance can reach 92%, 81% and 85% respectively；Technique is simple, easy to operate, and cost is relatively low.
Description
Technical field
The present invention relates to technical field of sewage, especially, there is provided a kind of side of rapidly cultivating aerobic particle sludge
Method and batch-type reaction unit, Starting mode is run by the high sludge of inoculum density and low sludge loading and promotes aerobic particle mud
The rapidly cultivating aerobic particle sludge in AAASBR reactors.
Background technology
Aerobic particle mud is a kind of Novel sewage high-performance bio treatment technology emerging in recent years, and traditional activity
Sludge is compared, and is had many advantages：Compact structure, good settling property, microorganism concn height are while possess denitrogenation
The ability of dephosphorization, technological process are simple, the volume of sewage disposal system and floor space are small, so as to reduce investment and run into
This.Therefore, aerobic particle mud has a extensive future, deep to be paid close attention to by numerous researchers.Being formed by for aerobic particle mud is micro-
Biological self-retaining acts on the organism clustering phenomena to be formed, and is one and includes physics, chemistry and the complex process of biological agent.Learn
Art bound pair has carried out substantial amounts of research in the forming process of aerobic particle mud, and existing result of study shows aerobic particle mud
Formed closely related with volumetric loading, flow shear and sedimentation time etc..Existing culture technique is also concentrated mainly on volume
Load control (high volumetric loading or stress alternation), sedimentation time shortening, aerobic starvation time and shearing force etc. are come excellent
Change culture aerobic particle mud.So far, can quickly form the aerobic particle mud having good stability be still to limit this skill
Art is used for an important factor for engineering is promoted.
The content of the invention
Goal of the invention is the difficulty for the current fast culture of aerobic particle mud, it is proposed that a kind of new rapid Optimum
Cultural method and device, mainly accelerate and optimize mud granule by controlling sludge concentration and sludge loading in incubation
Forming process, the optimization culture of aerobic particle mud is realized using the AAASBR reactor methods of operation under room temperature price adjustment.
A kind of method of rapidly cultivating aerobic particle sludge, in the alternate batch-type batch reactor of aerobic/anaerobic,
Initial start stage be inoculated with high concentration sludge and use the low sludge loading method of operation, reinforcement sludge settling property improve and initially it is good
The formation of oxygen particle nucleus, volumetric loading is improved constantly after the formation of aerobic grain nucleus, shortens Cycle Length and sedimentation time,
And increase volume-exchange rate.
Further, the matrix is municipal wastewater, and COD concentration is 200-320mg/L in sewage, and the concentration of nitrogen is
38-55mg/L, the concentration of phosphorus is 6.0-13.0mg/L, and the concentration of suspended particulate is 80-150mg/L, pH value range 6.8-
7.4。
Further, the mass ratio of anaerobically digested sludge and aerobic sludge is 1:1, the inoculation high concentration is mixing sludge
Concentration is not less than 20g/L, and is started again at after carrying out empty expose three days after being inoculated with aeration quantity 50L/min into matrix.Starting period
Using the low sludge loading method of operation, system sludge loading 0.056kgCOD/kgSSd is kept.
Further, described the system mainly includes anaerobism water inlet, anaerobism is followed using/aerobic sequencing batch formula the method for operation is detested
Ring, aerobic stage, precipitate phase and bleeding stage.；Fill phase is anaerobic state, during subsequent anaerobism section, passes through pump
Circulate the mass transfer effect in the material circulation conveying of reactor bottom to reactor top guarantee system.
Further, the 1-8 days, hold period 12h, volume-exchange rate 50%, sedimentation time 20min, OLR0.35kg
COD/m3D, the 8th day after inoculation, the sludge of discharge upper strata sedimentation function difference, sludge concentration is set to be reduced to 8.0g/L by 12.3g/L.
Further, the 9-12 days, hold period 9h, volume-exchange rate 60%, sedimentation time 15min, OLR0.54kg
COD/m3D, at the 12nd day, the sludge of upper strata sedimentation function difference is discharged again, sludge concentration is reduced to 4.0g/L.
Further, the 13-19 days, hold period 6h, volume-exchange rate 75%, sedimentation time 12min, OLR0.90kg
COD/m3d；The 20-70 days, hold period 4h, volume-exchange rate 75%, sedimentation time 8min, OLR1.35kg COD/m3d。
Further, the cultivation temperature scope of the incubation is 13-25 DEG C, realizes within the 45th day granulating completely, training
Support to the 70th day and terminate, finally give faint yellow granule sludge, average diameter 750um, sludge volume index is 20~35mL/
G, COD, TN and TP clearance respectively reach 92%, 81% and 85%.
A kind of batch-type reaction unit for rapidly cultivating aerobic particle sludge, reactor (1) are cylinder, and internal diameter is
0.25m, high 2m, dischargeable capacity 85L, reactor (1) upper end include being used for the liquid level gauge (11) for measuring water level；With the reaction
The water inlet pipe (2) that the bottom water inlet (3) of device (1) is connected is connected with intake pump (4), and the opposite side of the intake pump (4) is with entering
The outlet pipe (5) of water tank (6) is connected, and the intake pump (4) is used for the water outlet by inlet water tank (6) interior matrix via inlet water tank (6)
Pipe (5), intake pump (4), the water inlet pipe (2) of reactor (1) are sent into reactor (1) from the water inlet (3) of reactor (1) bottom；
Reactor self-loopa pipe (13) one end connects the intake pump (4), and reactor (1) upper end, the water inlet with reactor are stretched into one end
The outer circulation that (2) form reactor (1) is managed, during anaerobism section, intake pump (4) is by the circulation pipe (13) of reactor by reactor
(1) Liquid extracting on top and the lower curtate of reactor (1) is delivered to by reactor water inlet lower tube (2) to ensure reactor
(1) mass transfer effect in；The matrix is municipal wastewater, and COD concentration is 200-320mg/L in sewage, and the concentration of nitrogen is 38-
55mg/L, the concentration of phosphorus is 6.0-13.0mg/L, and the concentration of suspended particulate is 80-150mg/L, pH value range 6.8-7.4；Institute
The matrix in reactor (1) is stated to be used to be inoculated with anaerobically digested sludge and aerobic sludge, the anaerobically digested sludge and aerobic sludge
Mass ratio be 1:1, sludge concentration is not less than 20g/L；The air inlet pipe of the reactor (1) is connected with air pump (7), air inlet pipe with
The aeration head (8) of reactor (1) bottom is connected for being aerated into reactor (1), and the air pump (7) is arranged to aeration quantity
50L/min is aerated, and starts to carry out empty exposure in three days；The outlet pipe (9) of the reactor (1) connects out water pump (10), described
The outlet pipe (9) of reactor (1) stretches into the middle part of the reactor (1), is used for after the completion of precipitation in the middle part of abstraction reaction device (1)
Reactant；The intake pump (4) and go out after water pump (10) is configured to empty and exposed three days to begin through control inflow and water yield
Holding system volumetric loading 0.056kgCOD/kgSSd.
Further, the intake pump (4), go out water pump (10) and air pump (7) is connected and by it with PLC (12)
Control：The 1-8 days, hold period 12h, volume-exchange rate 50%, sedimentation time 20min, OLR0.35kg COD/m3D, inoculation
The 8th day afterwards, the sludge of discharge upper strata sedimentation function difference, sludge concentration is set to be reduced to 8.0g/L by 12.3g/L；The 9-12 days, keep
Cycle 9h, volume-exchange rate 60%, sedimentation time 15min, OLR0.54kg COD/m3D, at the 12nd day, upper strata is discharged again and is sunk
The sludge of shallow lake poor performance, makes sludge concentration be reduced to 4.0g/L；The 13-19 days, hold period 6h, volume-exchange rate 75%, sedimentation
Time 12min, OLR0.90kg COD/m3d；The 20-70 days, hold period 4h, volume-exchange rate 75%, sedimentation time 8min,
OLR1.35kg COD/m3d；The water inlet in each stage and water discharge time are respectively 10min and 5min.
The present invention in Initial stage of culture, using high sludge concentration and the low sludge loading method of operation, microorganism species are in
Starvation, the weak microorganism of adaptability are eliminated, and the microorganism to survive improves constantly the cohesion ability of itself, in height
Easily collided in the environment of sludge concentration so as to be formed initial " nucleus particle "." nucleus is formd by the cultures of seven days
Particle ".At the 8th day and the 12nd day, the artificial sludge for discharging sedimentation function difference in upper strata, its concentration is set to be reduced to by 12.3g/L
8.0g/L is reduced to 4.0g/L again so that the major part retained in reactor (1) is self-coagulation and sedimentation function well micro-
Biology, along with the adjustment of volumetric loading, good condition is provided for " nucleus particle ", accelerates and optimizes complete of sludge
The formation of granulation.
Technique effect acquired by the present invention：
(1) particle is formed soon, solves the problems, such as that aerobic sludge granular is not easy to form and be formed overlong time；
(2) aerobic particle mud " nucleus hypothesis " quick mode is realized；
(3) aerobic particle mud of culture, compact-sized, stability is good, and outward appearance is faint yellow, and average grain diameter is
750um, sludge volume index (SVI) are that 20-35ml/g, COD, TN and TP clearance can reach 92% respectively, 81% He
85%.
(4) technique is simple, easy to operate, and cost is relatively low.
Brief description of the drawings
Fig. 1 is AAASBR reactors provided by the present invention, and wherein reference is：
1- reactors, the water inlet pipe of 2- reactors, the water inlet of 3- reactors, 4- intake pumps, 5- inlet water tanks outlet pipe,
6- inlet water tanks, 7- air pumps, 8- aeration heads, the outlet pipe of 9- reactors, 10- go out water pump, 11- liquid level gauges, 12-PLC controllers,
13- reactor self-loopa pipes.
Fig. 2 is the electromicroscopic photograph of different phase granule sludge metamorphosis in the embodiment of the present invention.
Embodiment
To make those skilled in the art more fully understand technical scheme, the present invention is carried below in conjunction with the accompanying drawings
The method and batch-type reaction unit of a kind of rapidly cultivating aerobic particle sludge supplied are described in detail.
A kind of method of rapidly cultivating aerobic particle sludge, comprises the following steps：
(1) inoculation of activated-sludge and pilot-plant
Using the anaerobically digested sludge and aerobic sludge (1 of municipal sewage plant:1) it is kind of a mud, is inoculated in
In AAASBR reaction units (Fig. 1), reactor is cylindrical, internal diameter 0.25m, high 2m, effective working volume 85L, the mistake
Journey is carried out at ambient temperature.
(2) water intake mode
In aerobic particle mud incubation, using the dirt in municipal sewage plant with sanitary sewage characteristic feature
Water is injected sewage in reactor by the water inlet 3 of reactor bottom, the main composition of sewage is shown in Table 1 as water inlet.
Table 1：Wastewater parameters
| Component | Content |
| COD(mg/L) | 200-320 |
| TN(mg/L) | 38-55 |
| TP(mg/L) | 6.0-13.0 |
| SS(mg/L) | 80-150 |
| PH | 6.8-7.4 |
(3) forming process
Seed sludge concentration is 20g/L, and aeration quantity is 50L/min (sky exposes 3 days), improves sludge settling property.With laggard
Water, keep system volumetric loading 0.056kgCOD/kgSSd or so.8d, " nucleus particle " initially form.With culture
Carry out, improve constantly volumetric loading, shorten Cycle Length and sedimentation time, and increase volume-exchange rate, whole granule sludge
Incubation time be 70 days, be divided into four process sections.Concrete operations parameter is shown in Table 2.
Table 2：The operating parameter of incubation
In incubation, there is Double-peak Phenomenon in grain diameter, illustrates under this training mode, in fact it could happen that " nucleus
Particle " is gradually grown up and " nucleus particle " while the process of formation, granulation phase sludge metamorphosis and ripe particle Electronic Speculum
Photo such as Fig. 2.
Become outside the pale of civilization by initial empty exposure sludge concentration itself concentration adjustment, 8d and 12d actively select settling property good
Sludge accelerate the process of granulating.The operation of low sludge loading promotes sludge to be in starvation, is advantageous to " nucleus
The formation of grain ", meet the physiological property and demand of the reinforcing of microbial starvation self aggregation.In each cycle, fill phase and row
The time in water stage is respectively 10min and 5min.The culture that have passed through seven days forms yellow sludge particle, the 8th day and
12 days, by artificially excluding the sludge of sedimentation function difference come conditioning of mud concentration and sludge loading, acceleration optimization aerobic sludge
The formation of grain, after 60 days, reaction reaches stable state, and the mud granule of acquisition is compact-sized, average diameter 750um, dirty
Mud volume index (SVI) is 20~35mL/g, and can reach 92% respectively to COD, TN and TP clearance, 81% He
85%.
The present embodiment uses the alternate batch-type batch reactor (AAASBR) of aerobic/anaerobic, and reactor 1 is cylinder,
Internal diameter is 0.25m, high 2m, dischargeable capacity 85L, and the upper end of reactor 1 includes being used for the liquid level gauge 11 for measuring water level.
The water inlet pipe 2 connected with the bottom water inlet 3 of the reactor 1 is connected with intake pump 4, the intake pump 4 it is another
Side is connected with the outlet pipe 5 of inlet water tank 6, and the intake pump 4 is used for the outlet pipe by matrix in inlet water tank 6 via inlet water tank 6
5th, intake pump 4, the water inlet pipe 2 of reactor 1 are sent into reactor 1 from the water inlet 3 of the bottom of reactor 1, and the matrix is municipal dirty
Water, COD concentration is 200-320mg/L in sewage, and the concentration of nitrogen is 38-55mg/L, and the concentration of phosphorus is 6.0-13.0mg/L, is hanged
The concentration of floating particles is 80-150mg/L, pH value range 6.8-7.4.
Matrix in the reactor 1 is used to being inoculated with anaerobically digested sludge and aerobic sludge, the anaerobically digested sludge and
The mass ratio of aerobic sludge is 1:1, sludge concentration is not less than 20g/L；The air inlet pipe of the reactor 1 is connected with air pump 7, air inlet
Pipe is connected with the aeration head 8 of the bottom of reactor 1 for being aerated into reactor 1, and the air pump 7 is arranged to aeration quantity 50L/
Min is aerated, and starts to carry out empty exposure in three days；The outlet pipe 9 of the reactor 1 connects out water pump 10, and the reactor 1 goes out
Water pipe 9 stretches into the middle part of the reactor 1, and the reactant at the middle part of abstraction reaction device 1 is used for after the completion of precipitation；The intake pump 4
Inflow and water yield is controlled to keep system volumetric loading with going out after water pump 10 is configured to empty exposure three days to begin through
0.056kgCOD/kgSS·d.The one end of reactor self-loopa pipe 13 connects the intake pump 4, and the upper end of reactor 1 is stretched into one end, with
The water inlet pipe 2 of reactor forms the outer circulation of reactor 1, and during anaerobism section, intake pump 4 will be anti-by the circulation pipe 13 of reactor
Answer the substance withdrawal on the top of device 1 and be delivered to the bottom of reactor 1 by reactor water inlet pipe 2 to ensure in reactor 1
Mass transfer effect.
The intake pump 4, go out water pump 10 and air pump 7 is connected with PLC 12, by SBR programme-control, be set
Into：The 1-8 days, hold period 12h, volume-exchange rate 50%, sedimentation time 20min, OLR0.35kg COD/m3D, after inoculation
8th day, the sludge of discharge upper strata sedimentation function difference, sludge concentration is set to be reduced to 8.0g/L by 12.3g/L；The 9-12 days, kept for week
Phase 9h, volume-exchange rate 60%, sedimentation time 15min, OLR0.54kg COD/m3D, at the 12nd day, upper strata precipitation is discharged again
The sludge of poor performance, makes sludge concentration be reduced to 4.0g/L；The 13-19 days, hold period 6h, volume-exchange rate 75%, during sedimentation
Between 12min, OLR0.90kg COD/m3d；The 20-70 days, hold period 4h, volume-exchange rate 75%, sedimentation time 8min,
OLR1.35kg COD/m3d；The water inlet in each stage and water discharge time are respectively 10min and 5min.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
- A kind of 1. method of rapidly cultivating aerobic particle sludge, it is characterised in that anti-in the alternate batch-type interval of aerobic/anaerobic Answer in device, be inoculated with high concentration sludge in initial start stage and use the low sludge loading method of operation, reinforcement sludge settling property improves With the formation of initial aerobic grain nucleus, improve constantly volumetric loading after the formation of aerobic grain nucleus, shorten Cycle Length and Sedimentation time, and increase volume-exchange rate.
- 2. the method for rapidly cultivating aerobic particle sludge as claimed in claim 1, it is characterised in that the matrix is municipal dirty Water, COD concentration is 200-320mg/L in sewage, and the concentration of nitrogen is 38-55mg/L, and the concentration of phosphorus is 6.0-13.0mg/L, is hanged The concentration of floating particles is 80-150mg/L, pH value range 6.8-7.4.
- 3. the method for rapidly cultivating aerobic particle sludge as claimed in claim 2, it is characterised in that anaerobically digested sludge is become reconciled The mass ratio of oxygen sludge is 1:1, the inoculation high concentration is that mixing sludge concentration is not less than 20g/L, and with aeration after inoculation Amount 50L/min is started again at into matrix after carrying out empty expose three days；Initial start stage uses the low sludge loading method of operation, keeps system Sludge loading 0.056kgCOD/kgSSd.
- 4. the method for rapidly cultivating aerobic particle sludge as claimed in claim 3, it is characterised in that the system using detest/it is good The oxygen sequence batch method of operation, including anaerobism water inlet, anaerobism circulation, aerobic stage, precipitate phase and bleeding stage；Fill phase is Anaerobic state, during subsequent anaerobism section, the liquid circulation on reactor top is delivered to by reactor bottom by pump circulation Mass transfer effect in guarantee system.
- 5. the method for rapidly cultivating aerobic particle sludge as claimed in claim 4, it is characterised in that the 1-8 days, hold period 12h, volume-exchange rate 50%, sedimentation time 20min, OLR0.35kg COD/m3D, the 8th day after inoculation, discharge upper strata precipitability The sludge of energy difference, makes sludge concentration be reduced to 8.0g/L by 12.3g/L.
- 6. the method for rapidly cultivating aerobic particle sludge as claimed in claim 5, it is characterised in that the 9-12 days, kept for week Phase 9h, volume-exchange rate 60%, sedimentation time 15min, OLR0.54kg COD/m3D, at the 12nd day, upper strata precipitation is discharged again The sludge of poor performance, makes sludge concentration be reduced to 4.0g/L.
- 7. the method for rapidly cultivating aerobic particle sludge as claimed in claim 6, it is characterised in that the 13-19 days, kept for week Phase 6h, volume-exchange rate 75%, sedimentation time 12min, OLR0.90kg COD/m3d；The 20-70 days, hold period 4h, volume Exchange rate 75%, sedimentation time 8min, OLR1.35kg COD/m3d。
- 8. the method for rapidly cultivating aerobic particle sludge as claimed in claim 7, it is characterised in that the training of the incubation It is 13-25 DEG C to support temperature range, realizes within the 45th day granulating completely, cultivates to the 70th day and terminate, finally give yellowish coloured particles Sludge, average diameter 750um, sludge volume index are that 20~35mL/g, COD, TN and TP clearance respectively reach 92%, 81% and 85%.
- A kind of 9. batch-type reaction unit for rapidly cultivating aerobic particle sludge, it is characterised in thatReactor (1) is cylinder, and internal diameter 0.25m, high 2m, dischargeable capacity 85L, reactor (1) upper end includes being used to survey Measure the liquid level gauge (11) of water level；The water inlet pipe (2) and intake pump (4) phase connected with the bottom water inlet (3) of the reactor (1) Even, the opposite side of the intake pump (4) is connected with the outlet pipe (5) of inlet water tank (6), and the intake pump (4) is used for inlet water tank (6) interior matrix via the outlet pipe (5) of inlet water tank (6), intake pump (4), reactor (1) water inlet pipe (2) from reactor (1) bottom The water inlet (3) in portion is sent into reactor (1)；Reactor self-loopa pipe (13) one end connects the intake pump (4), and one end connection is anti- Device (1) upper end is answered, forms the outer circulation of reactor (1) with the water inlet pipe (2) of reactor, during anaerobism section, intake pump (4) passes through The circulation pipe (13) of reactor is delivered to by the Liquid extracting on reactor (1) top and by reactor bottom water inlet pipe (2) The bottom of reactor (1) is to ensure the mass transfer effect in reactor (1)；The matrix is municipal wastewater, COD concentration in sewage For 200-320mg/L, the concentration of nitrogen is 38-55mg/L, and the concentration of phosphorus is 6.0-13.0mg/L, and the concentration of suspended particulate is 80- 150mg/L, pH value range 6.8-7.4；Matrix in the reactor (1) is used to be inoculated with anaerobically digested sludge and aerobic dirt Mud, the mass ratio of the anaerobically digested sludge and aerobic sludge is 1:1, sludge concentration is not less than 20g/L；The reactor (1) Air inlet pipe be connected with air pump (7), air inlet pipe is connected with the aeration head (8) of reactor (1) bottom for being exposed in reactor (1) Gas, the air pump (7) are arranged to be aerated with aeration quantity 50L/min, start to carry out empty exposure in three days；The reactor (1) Outlet pipe (9) connects out water pump (10), and the outlet pipe (9) of the reactor (1) stretches into the middle part of the reactor (1), precipitation After the completion of be used for abstraction reaction device (1) in the middle part of reactant；The intake pump (4) and go out water pump (10) and be configured to empty to expose three days After begin through control inflow and water yield keeps system volumetric loading 0.056kgCOD/kgSSd.
- 10. it is used for the batch-type reaction unit of rapidly cultivating aerobic particle sludge as claimed in claim 9, it is characterised in that The intake pump (4), go out water pump (10) and air pump (7) is connected and is controlled by it with PLC (12)：The 1-8 days, keep Cycle 12h, volume-exchange rate 50%, sedimentation time 20min, OLR0.35kg COD/m3D, the 8th day after inoculation, discharge upper strata sinks The sludge of shallow lake poor performance, makes sludge concentration be reduced to 8.0g/L by 12.3g/L；The 9-12 days, hold period 9h, volume-exchange rate 60%, sedimentation time 15min, OLR0.54kg COD/m3D, at the 12nd day, the sludge of upper strata sedimentation function difference is discharged again, is made Sludge concentration is reduced to 4.0g/L；The 13-19 days, hold period 6h, volume-exchange rate 75%, sedimentation time 12min, OLR0.90kg COD/m3d；The 20-70 days, hold period 4h, volume-exchange rate 75%, sedimentation time 8min, OLR1.35kg COD/m3d；The water inlet in each stage and water discharge time are respectively 10min and 5min.
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| PL424590A1 (en) * | 2018-02-14 | 2019-08-26 | Politechnika Białostocka | Method for production of the granular oxygen activated sludge |
| CN109179654A (en) * | 2018-09-06 | 2019-01-11 | 北京化工大学 | It is a kind of to flow up SNAD technique quick start method in the aerobic membrane bioreactor that declines |
| CN109179654B (en) * | 2018-09-06 | 2021-05-04 | 北京化工大学 | SNAD process quick starting method in up-flow type micro-aerobic membrane bioreactor |
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| CN110054296B (en) * | 2019-05-17 | 2020-11-03 | 北京化工大学 | A/O/A SBR process for treating low C/N ratio municipal sewage |
| CN110330099A (en) * | 2019-08-14 | 2019-10-15 | 重庆市生态环境科学研究院 | A kind of method for culturing aerobic granular sludge and culture apparatus |
| CN114133026A (en) * | 2021-12-14 | 2022-03-04 | 青岛理工大学 | Method for enhancing sludge granulation by adding ferroferric oxide magnetic nanoparticles |
| CN114133026B (en) * | 2021-12-14 | 2023-11-10 | 青岛理工大学 | Method for strengthening sludge granulation by adding ferroferric oxide magnetic nano particles |
| CN114656032A (en) * | 2022-04-25 | 2022-06-24 | 嘉兴学院 | Method for strengthening granulation of salt-tolerant aerobic sludge by adding anaerobic particles |
| CN115557598A (en) * | 2022-09-30 | 2023-01-03 | 西安工程大学 | Method and device for culturing aerobic granular sludge capable of synchronously removing nitrogen and phosphorus by degrading azo dyes |
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