CN106830301A - A kind of method that aerobic particle mud is cultivated in sbr reactor post - Google Patents
A kind of method that aerobic particle mud is cultivated in sbr reactor post Download PDFInfo
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- CN106830301A CN106830301A CN201710028116.XA CN201710028116A CN106830301A CN 106830301 A CN106830301 A CN 106830301A CN 201710028116 A CN201710028116 A CN 201710028116A CN 106830301 A CN106830301 A CN 106830301A
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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
- C02F3/1263—Sequencing batch reactors [SBR]
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Activated Sludge Processes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
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Abstract
A kind of method that aerobic particle mud is cultivated in sbr reactor post, it is intended to overcome sbr reactor post culture aerobic particle mud of the use ratio of height to diameter of the prior art more than 10, build and operation cost is high, lead to not the shortcoming of extensive practical engineering application, a kind of method that aerobic particle mud is cultivated in sbr reactor post is provided, in conventional sbr reactor post of the ratio of height to diameter less than 6, by the operational factor for controlling reaction column, cotton-shaped activated sludge is progressively transformed into closely knit Granular sludge, the aerobic particle mud for settling fast decontamination function admirable is obtained.The present invention provides feasibility for Aerobic Granular Sludge Technology large-scale engineering applications, compensate for the blank of conventional sbr reactor post culture aerobic particle mud research, is a kind of Novel sewage treatment technology of high-efficiency and economic, is adapted to be used during culture aerobic particle mud.
Description
Technical field
Cultivated in sbr reactor post the present invention relates to sewage disposal technology exploitation and application field, more particularly to one kind
The method of oxygen granule sludge.
Background technology
Granular sludge be oxygen abundance in the case of, microorganism by mutually aggregation and formed a kind of proportion compared with
Greatly, volume is larger and the preferable microbial aggregate of system condition.Compared with traditional activated sludge, aerobic particle mud is not only
With outstanding settling property, stronger antitoxin sexuality, because its special biological structure can also synchronize the anti-nitre of nitrification
Change.By 20 years of researches, training method, formation condition, formation mechenism in aerobic particle mud and to municipal wastewater,
The treatment such as industrial wastewater aspect have accumulated rich experience.Aerobic particle mud method is at the high-efficiency sewage that last decade grows up
Reason technology, because of its treatment efficiently, relatively low cost and the features such as small sludge yield, increasingly attract attention.
The core technology of current aerobic particle mud is grasped by the state such as Holland scientist, and most representational is Dutch TU
The Mark van Loosdrecht professors team of Delft, they are dirty from the mid-90 in 20th century aerobic grain that begins one's study
Mud, in 2007 by the technology large-scale engineering applications, and is named as " Nereda techniques ", at present in the whole world by the technology
There is more than 20 engineering project to apply Nereda techniques, obtain good result.The domestic research to the technology is concentrated mainly on
Oxygen Granular sludge formation mechanism, condition control and sewage disposal aspect.
Due to existing aerobic particle mud culture need ratio of height to diameter more than 10 sbr reactor post in carry out, build and
Operation cost is high, causes Aerobic Granular Sludge Technology to be difficult to extensive practical engineering application, and conventional sbr reactor post culture is aerobic
The research of granule sludge is less.
The content of the invention
Sbr reactor post culture aerobic particle mud instant invention overcomes use ratio of height to diameter of the prior art more than 10,
Build and operation cost is high, lead to not the shortcoming of extensive practical engineering application, there is provided one kind is cultivated in sbr reactor post
The method of aerobic particle mud.
The present invention realizes that the technical scheme that goal of the invention is used is：One kind cultivates aerobic particle mud in sbr reactor post
Method, ratio of height to diameter less than 6 conventional sbr reactor post in, by controlling the operational factor of reaction column, by cotton-shaped activated sludge
Progressively it is transformed into closely knit Granular sludge, obtains the aerobic particle mud for settling fast decontamination function admirable, concretely comprises the following steps：
A. pretreated sewage treatment plants activated sludge is learnt from else's experience as seed sludge, it is normal less than 6 with ratio of height to diameter
Rule sbr reactor post carries out culture 3~5d of domestication with simulated wastewater as reactor to activated sludge, sludge SVI be 95~
100mL g-1When, it is considered as culture domestication and terminates；
B. by influent CODCrConcentration is from 150mg L-1Step up to 800mg L-1, influent ammonium concentration is from 30mg L-1By
Step is improved to 60mg L-1, the sedimentation time progressively foreshorten to 3min from 15min, incrementally increase aerobic particle mud particle diameter, complete dirty
Mud is granulated；
C. after the completion of granular sludge, the operational factor of reaction column, influent COD are controlledCrConcentration is maintained at 100mg L-1
Above, influent ammonium concentration is maintained at 5mg L-1Above, total phosphorus concentration is maintained at 3mg L-1Above, aeration rate is maintained at 2L
min-1Above, sedimentation time control keeps aerobic particle mud stable operation in 3~5min, occurs without aerobic particle mud big
Scale disintegration.
Further, described step B includes：
A. the operational factor of original state reaction column is：Influent CODCrConcentration is 150mg L-1, influent ammonium concentration be
30mg L-1, total phosphorus concentration be 5mg L-1, aeration rate be 4L min-1, the sedimentation time be 15min, under this Parameter Conditions run
25~30d；
B. it is 80~90mL g when occurring compared with lumpy sludge, SVI-1When, the operational factor of reaction column is adjusted to：Water inlet
CODCrConcentration is improved to 300mg L-1, influent ammonium concentration improved to 40mg L-1, total phosphorus concentration be 5mg L-1, aeration rate be 4L
min-1, the sedimentation time foreshorten to 8min, under this Parameter Conditions run 15~20d；
C. when sludge particle diameter based on 0.1~0.3mm, SVI be 70~80mL g-1During left and right, the operational factor of reaction column
It is adjusted to：Influent CODCrConcentration is improved to 500mg L-1, influent ammonium concentration 50mg L-1, total phosphorus concentration be 5mg L-1, aeration
It is 4L min to measure-1, the sedimentation time foreshorten to 5min, under this Parameter Conditions run 15~20d；
D. when sludge particle diameter increases to 0.3~0.7mm, SVI for 50~60mL g-1During left and right, the operational factor of reaction column
It is adjusted to：Influent CODCrConcentration is improved to 800mg L-1, influent ammonium concentration improved to 60mg L-1, total phosphorus concentration be 5mg L-1, aeration rate be 4L min-1, the sedimentation time foreshorten to 3min, under this Parameter Conditions run 25~30d；
E. when sludge particle diameter up to 0.5~1.0mm, SVI be 30~40mL g-1COD in left and right, reaction columnCrAnd ammonia nitrogen removal
Rate can up to more than 85% when, be considered as granular sludge completion.
Further, the ratio of height to diameter of described sbr reactor post is 3.67.
Further, 30%, 50%, 100% actual domestic wastewater is progressively also added in simulated wastewater including step D,
Adaptability and scavenging effect of the aerobic particle mud to actual domestic wastewater are investigated, anoxic section, anoxic are increased in the cycle of operation
Section time control, for denitrifying bacterium provides anaerobic environment in aerobic particle mud, improves efficiencies of nitrogen removal in 0.5~1h.
The beneficial effects of the invention are as follows：Sedimentation can be turned out in conventional sbr reactor post according to the method for the present invention fast, micro-
The aerobic particle mud that biomass is big and decontamination performance is good, phase is cultivated with existing in sbr reactor post of the ratio of height to diameter more than 10
Than, construction and operation cost are reduced, the blank of the research of conventional sbr reactor post culture aerobic particle mud is compensate for, it is one
The Novel sewage treatment technology of high-efficiency and economic is planted, for the scale practical application of the technology provides feasibility.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is flow chart of the method for the present invention.
Fig. 2 is Granulation of Sludge schematic diagram in conventional sbr reactor post of the invention.
Fig. 3 is aerobic particle mud mode of appearance variation diagram of the invention.
Fig. 4 is that aerobic particle mud SEM of the invention and EDX schemes.
Fig. 5 is aerobic particle mud settling property figure of the invention.
Fig. 6 is that aerobic particle mud of the invention decontaminates performance map.
Specific embodiment
As shown in Figure 1, a kind of method that aerobic particle mud is cultivated in sbr reactor post of the present embodiment, in Gao Jing
In than the conventional sbr reactor post less than 6, by controlling the operational factor of reaction column, cotton-shaped activated sludge is progressively transformed into close
Real Granular sludge, obtains the aerobic particle mud for settling fast decontamination function admirable, the preferred sbr reactor post of the present embodiment
Ratio of height to diameter be 3.67, in the sbr reactor post that ratio of height to diameter is 3.67, cotton-shaped activated sludge is granulated, specific steps
For：
A. pretreated sewage treatment plants activated sludge is learnt from else's experience as seed sludge, it is normal less than 6 with ratio of height to diameter
Rule sbr reactor post carries out culture 3~5d of domestication with simulated wastewater as reactor to activated sludge, sludge SVI be 95~
100mL g-1When, it is considered as culture domestication and terminates；
B. by influent CODCrConcentration is from 150mg L-1Step up to 800mg L-1, influent ammonium concentration is from 30mg L-1By
Step is improved to 60mg L-1, the sedimentation time progressively foreshorten to 3min from 15min, incrementally increase aerobic particle mud particle diameter, complete dirty
Mud is granulated, and the preferred specific steps of the present embodiment include：
A. the operational factor of original state reaction column is：Influent CODCrConcentration is 150mg L-1, influent ammonium concentration be
30mg L-1, total phosphorus concentration be 5mg L-1, aeration rate be 4L min-1, the sedimentation time be 15min, under this Parameter Conditions run
25~30d；
B. it is 80~90mL g when occurring compared with lumpy sludge, SVI-1When, the operational factor of reaction column is adjusted to：Water inlet
CODCrConcentration is improved to 300mg L-1, influent ammonium concentration improved to 40mg L-1, total phosphorus concentration be 5mg L-1, aeration rate be 4L
min-1, the sedimentation time foreshorten to 8min, under this Parameter Conditions run 15~20d；
C. when sludge particle diameter based on 0.1~0.3mm, SVI be 70~80mL g-1During left and right, the operational factor of reaction column
It is adjusted to：Influent CODCrConcentration is improved to 500mg L-1, influent ammonium concentration 50mg L-1, total phosphorus concentration be 5mg L-1, aeration
It is 4L min to measure-1, the sedimentation time foreshorten to 5min, under this Parameter Conditions run 15~20d；
D. when sludge particle diameter increases to 0.3~0.7mm, SVI for 50~60mL g-1During left and right, the operational factor of reaction column
It is adjusted to：Influent CODCrConcentration is improved to 800mg L-1, influent ammonium concentration improved to 60mg L-1, total phosphorus concentration be 5mg L-1, aeration rate be 4L min-1, the sedimentation time foreshorten to 3min, under this Parameter Conditions run 25~30d；
E. when sludge particle diameter up to 0.5~1.0mm, SVI be 30~40mL g-1COD in left and right, reaction columnCrAnd ammonia nitrogen removal
Rate can up to more than 85% when, be considered as granular sludge completion.
C. after the completion of granular sludge, the operational factor of reaction column, influent COD are controlledCrConcentration is maintained at 100mg L-1
Above, influent ammonium concentration is maintained at 5mg L-1Above, total phosphorus concentration is maintained at 3mg L-1Above, aeration rate is maintained at 2L
min-1Above, sedimentation time control keeps aerobic particle mud stable operation in 3~5min, occurs without aerobic particle mud big
Scale disintegration.
In order that the aerobic particle mud of the present embodiment culture preferably adapts to actual domestic wastewater, the present embodiment is preferred
Also include step D, 30%, 50%, 100% actual domestic wastewater is progressively added in simulated wastewater, investigate aerobic particle mud
To the adaptability and scavenging effect of actual domestic wastewater, increase anoxic section in the cycle of operation, anoxic section time control 0.5~
1h, for denitrifying bacterium provides anaerobic environment in aerobic particle mud, improves efficiencies of nitrogen removal.
The Granulation of Sludge of the present embodiment as shown in Figure 2 understands, in conventional sbr reactor post, is necessarily processing
The sludge settling time is constantly reduced in cycle, cotton-shaped, little particle sludge is progressively washed out with water outlet, closely knit Granular sludge is protected
Stay, slowly form the sludge with compact grain sludge as dominant bacteria.
The mode of appearance of the aerobic particle mud of the present embodiment as shown in Figure 3 is changed stepwise and understands, Initial stage of culture sludge
Gradually changed to graininess from cotton-shaped, tiny block sludge was occurred in that at the 25th day, central cotton-shaped activated sludge is more, it is block
It is not clearly separated between sludge.With the continuous operation of reaction system, formd at the 45th day particle diameter 0.1~0.3mm it
Between initial stage aerobic particle mud, the sludge particle diameter is small, in irregular shape, bar-shaped or ellipsoid is mainly presented, while its structure
Also it is more loose.With gradually stepping up for cycle, the shortening of sedimentation time and water inlet organic loading, sludge particle diameter gradually increases
Greatly, finally the aerobic particle mud that regular shape, particle diameter distribution are uniform, structure is closely knit was formd at the 65th day.Afterwards sludge grain
Footpath continues to incrementally increase, and between the 90th day particle diameter of aerobic particle mud focuses primarily upon 0.5~1.0mm, and keeps stabilization.
The aerobic particle mud surface topography of utilization SEM observations as shown in Figure 4 understands that the aerobic grain that R1 is turned out is dirty
There is an intensive germs collect on mud surface, central based on coccus and rod bacterium, aerobic particle mud surface irregularity, have compared with
Concrete dynamic modulus.To the further amplifying observation of granule partial, and Elemental Composition analysis is carried out to the position by EDX, can by result
Know, C, O, N, P, Na and Fe are topmost components, its proportion of composing is respectively 46.96%, 35.03%, 9.69%,
2.41%th, 2.19% and 1.78%.
Knowable to aerobic particle mud settling property figure as shown in Figure 5, work as influent CODCrConcentration is from 300mgL-1Gradually rise
Up to 800mg L-1, the cycle of operation is reduced to 4h from 6h, the sedimentation time from 15min be stepped down to 3min when, it is dirty in reactor
The settling property of mud concentration and sludge changes.In Initial stage of culture because sludge is still in the laundering period, sludge concentration declines bright
Aobvious, with the shortening of sedimentation time after the 10th day, the sludge of part settling property difference is discharged, and sludge concentration has declined.
Then, the good sludge of settling property gradually occupies advantage and largely breeds in the reactor, and sludge concentration is also gradually increasing,
MLSS is maintained at 5500mg L after 65 days-1Left and right, MLVSS/MLSS reaches 85% or so, and MLVSS/MLSS is to weigh sludge
The important indicator of middle active microorganism concentration, typically 70%~80%.Meanwhile, in the case of sludge concentration is gradually increased,
Sludge volume index (SVI) is but gradually reduced, and final stabilization is in 36mL g-1, SVI values are to judge that sludge settling concentrates the weight of performance
Want parameter, it is considered that be less than 150mL g in sludge volume index value-1When, sludge has good settleability.
Knowable to the decontamination performance of granule sludge as shown in Figure 6, CODCrClearance increases and increases with reactor run time
Greatly.To promote the formation of aerobic particle mud, progressively by influent CODCrConcentration is from 300mgL-1It is promoted to 800mg L-1, CODCrGo
Except effect can keep stabilization, and can keep more than 90% clearance.To promote the formation of aerobic particle mud, will progressively enter
Water ammonia nitrogen concentration is from 30mg L-1It is promoted to 50mg L-1.At runtime in 30d, with the raising of sludge activity, ammonia nitrogen removal
Effect is become better and better with the increase of run time, and in 50d, ammonia nitrogen removal frank reaches 85%.At runtime in 30d, with
The raising of sludge activity, sludge is more and more to the demand of P, to meet the demand of its own amplification so that the clearance of total phosphorus with
The increase of run time and increase, in 30d, total tp removal rate reaches 42.5%.Because nitrobacteria growth is slower, before culture
40 days, effluent nitrate-nitrogen was constantly accumulated, and was finally reached 14.5mg L-1, when nitrifier is cultivated it is ripe after, nitrate always under
Drop, is eventually held in 4mg L-1Left and right, nitrate nitrogen has certain accumulation, shows that current denitrifying capacity is limited.Water outlet nitrite nitrogen is dense
Degree declined with the increase of run time always at 35 days before culture, stablized afterwards in 0.5mg L-1Hereinafter, ammonia oxidation bacteria is shown
Growth is very fast.
Analyzed more than, cotton-shaped active sludge granulation can be improved the settling property and decontamination performance of sludge, be
A kind of Novel sewage treatment technology of high-efficiency and economic.Aerobic particle mud of the invention is in the sbr reactor that ratio of height to diameter is 3.67
Domestication, and stable operation are cultivated in post, good scavenging effect is obtained, this large-scale practical application to the technology provides feasible
Property.
Claims (4)
1. it is a kind of in sbr reactor post cultivate aerobic particle mud method, ratio of height to diameter less than 6 conventional sbr reactor post in,
By controlling the operational factor of reaction column, cotton-shaped activated sludge is progressively transformed into closely knit Granular sludge, obtain sedimentation it is fast,
Decontaminate the aerobic particle mud of function admirable, it is characterised in that concretely comprise the following steps：
A. pretreated sewage treatment plants activated sludge is learnt from else's experience as seed sludge, the conventional SBR with ratio of height to diameter less than 6
Reaction column carries out culture 3~5d of domestication with simulated wastewater as reactor to activated sludge, is 95~100mL in sludge SVI
g-1When, it is considered as culture domestication and terminates；
B. by influent CODCrConcentration is from 150mg L-1Step up to 800mg L-1, influent ammonium concentration is from 30mg L-1Progressively carry
Up to 60mg L-1, the sedimentation time progressively foreshorten to 3min from 15min, incrementally increase aerobic particle mud particle diameter, complete sludge
Granulation；
C. after the completion of granular sludge, the operational factor of reaction column, influent COD are controlledCrConcentration is maintained at 100mg L-1More than,
Influent ammonium concentration is maintained at 5mg L-1Above, total phosphorus concentration is maintained at 3mg L-1Above, aeration rate is maintained at 2L min-1With
Upper, sedimentation time control keeps aerobic particle mud stable operation in 3~5min, occurs without aerobic particle mud and solves on a large scale
Embody as.
2. it is according to claim 1 it is a kind of in sbr reactor post cultivate aerobic particle mud method, it is characterised in that
Described step B includes：
A. the operational factor of original state reaction column is：Influent CODCrConcentration is 150mg L-1, influent ammonium concentration be 30mg L-1, total phosphorus concentration be 5mg L-1, aeration rate be 4L min-1, the sedimentation time be 15min, under this Parameter Conditions run 25~
30d；
B. it is 80~90mL g when occurring compared with lumpy sludge, SVI-1When, the operational factor of reaction column is adjusted to：Influent CODCrIt is dense
Degree is improved to 300mg L-1, influent ammonium concentration improved to 40mg L-1, total phosphorus concentration be 5mg L-1, aeration rate be 4L min-1、
Sedimentation time foreshortens to 8min, and 15~20d is run under this Parameter Conditions；
C. when sludge particle diameter based on 0.1~0.3mm, SVI be 70~80mL g-1During left and right, the operational factor adjustment of reaction column
For：Influent CODCrConcentration is improved to 500mg L-1, influent ammonium concentration 50mg L-1, total phosphorus concentration be 5mg L-1, aeration rate be
4L min-1, the sedimentation time foreshorten to 5min, under this Parameter Conditions run 15~20d；
D. when sludge particle diameter increases to 0.3~0.7mm, SVI for 50~60mL g-1During left and right, the operational factor adjustment of reaction column
For：Influent CODCrConcentration is improved to 800mg L-1, influent ammonium concentration improved to 60mg L-1, total phosphorus concentration be 5mg L-1, expose
Tolerance is 4L min-1, the sedimentation time foreshorten to 3min, under this Parameter Conditions run 25~30d；
E. when sludge particle diameter up to 0.5~1.0mm, SVI be 30~40mL g-1COD in left and right, reaction columnCrWith ammonia nitrogen removal frank energy
During up to more than 85%, it is considered as granular sludge completion.
3. a kind of method that aerobic particle mud is cultivated in sbr reactor post according to claim 1 and 2, its feature exists
In the ratio of height to diameter of described sbr reactor post is 3.67.
4. it is according to claim 1 it is a kind of in sbr reactor post cultivate aerobic particle mud method, it is characterised in that
Also include step D, 30%, 50%, 100% actual domestic wastewater is progressively added in simulated wastewater, investigate aerobic particle mud
To the adaptability and scavenging effect of actual domestic wastewater, increase anoxic section in the cycle of operation, anoxic section time control 0.5~
1h, for denitrifying bacterium provides anaerobic environment in aerobic particle mud, improves efficiencies of nitrogen removal.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108640408A (en) * | 2018-04-03 | 2018-10-12 | 哈尔滨工业大学深圳研究生院 | Sewage disposal system |
| CN110937681A (en) * | 2019-11-07 | 2020-03-31 | 长沙理工大学 | Culture method of aerobic granular sludge |
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| CN103145233A (en) * | 2013-03-09 | 2013-06-12 | 北京工业大学 | Method for achieving fast cultivation of shortcut nitrifying granule sludge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103145233A (en) * | 2013-03-09 | 2013-06-12 | 北京工业大学 | Method for achieving fast cultivation of shortcut nitrifying granule sludge |
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| 孙世兵: "《小城镇污水处理厂设计与运行管理指南》", 31 July 2014, 天津大学出版社 * |
| 张甲耀等: "《环境微生物学（下册）》", 31 December 2008, 武汉大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108640408A (en) * | 2018-04-03 | 2018-10-12 | 哈尔滨工业大学深圳研究生院 | Sewage disposal system |
| CN110937681A (en) * | 2019-11-07 | 2020-03-31 | 长沙理工大学 | Culture method of aerobic granular sludge |
| CN110937681B (en) * | 2019-11-07 | 2022-05-06 | 长沙理工大学 | Culture method of aerobic granular sludge |
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Application publication date: 20170613 |