CN107601656A - A kind of device of granulated pellet sludge rapidly cultivating aerobic particle sludge Secondary Flow air lift fluid bed - Google Patents
A kind of device of granulated pellet sludge rapidly cultivating aerobic particle sludge Secondary Flow air lift fluid bed Download PDFInfo
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- CN107601656A CN107601656A CN201710950510.9A CN201710950510A CN107601656A CN 107601656 A CN107601656 A CN 107601656A CN 201710950510 A CN201710950510 A CN 201710950510A CN 107601656 A CN107601656 A CN 107601656A
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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)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of continuous quadratic stream coagulation air lift fluidized bed reactor of continuous culture aerobic particle mud with handling sewage, the reactor body part is made up of inside and outside two cylindrical lucite, including fluidization regions（14）, water particle Disengagement zone（20）, return passage (13), decanting zone（2）Gong Sige areas.Secondary Flow air lift fluid bed provided by the invention is used using granulated pellet sludge, fast culture granule sludge, greatly shorten the formation time of aerobic particle mud, there is good wastewater treatment efficiency in the aerobic incubation of granulated pellet sludge, the purpose handled in culture is realized, shortens the time required for granule sludge starts.
Description
Technical field
The invention belongs to environmental protection, sewage treatment area, and in particular to good to a kind of granulated pellet sludge fast culture
The device and cultural method of oxygen granule sludge.
Background technology
With the quickening of China's urbanization, municipal sewage yield also accordingly increases, and such as national discharge of wastewater in 2015 is total
695.4 hundred million tons, wherein 209.8 hundred million tons of discharged volume of industrial waste water are measured, only account for 30.2%, and town domestic sewage discharge capacity 485.1 hundred million
Ton, accounts for 69.8%.《" 13 " national urban wastewater treatment and the planning of regeneration Facilities Construction》The year two thousand twenty bottom is proposed, it is real
Existing urban wastewater treatment facility all standing, treatment rate of domestic sewage will reach 95%.Simultaneously because the rapid hair of modernization industry
Exhibition, causes the pollution in wide area of water resource, the improvement of water pollution and reuse technology have become what modern industry developed rapidly
Bottleneck.Town sewage plant and trade effluent are mainly handled using different aerobic activated sludge process at this stage.But aerobic work
The problem of loosely organized, settleability is poor, and sludge concentration is low in aeration tank, and disposal ability is not high be present in property sludge.Aerobic grain is dirty
Mud has that compact-sized, functional flora is more, settling property is good, sludge concentration is high, can bear high organic loading and variation water quality band
The features such as impact load come, it is a high-quality sewage disposal biomaterial, there are wide market prospects.
The culture of aerobic particle mud at present utilizes abundant micro- life in activated sludge mainly using activated sludge as raw material
Thing, extracellular polymeric and shearing force carry out selective culture, it is clear that using aerobic activated sludge as raw material, are dehydrated by physical method
And carry out artificial granulation, can increase the microbe species in granulated pellet sludge with quantity, utilize the extracellular of microorganism secretion
The cohesiveness while granulated pellet sludge of polymer increase particle improve the settleability of particle and resistant to shearing acts on, and utilizes people
The granule sludge that work is granulated is cultivated under reasonable oxygen content and fluid shear condition, can increase the culture effect of granule sludge,
Granulated pellet sludge can make biomaterial simultaneously can carry out sewage disposal while aerobic granular culture is carried out.
Aerobic particle mud is to generally require 40-60 days the time that seed sludge is cultivated using activated sludge at present
More than, the practical application to granule sludge technology brings problems, such as the increase of operating cost, water outlet water in start-up course
The problems such as matter often can not be up to standard；Accelerate the granulating process of floc sludge by adding induction core or bivalent metal ion,
On the one hand operating cost is added, on the other hand, the speed that it is accelerated is nor especially desirable.Therefore, cotton-shaped dirt how is accelerated
The granulating process of mud, realizing the large-scale application of Aerobic Granular Sludge Technology turns into the problem of industry is paid close attention to.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of method of fast culture granule sludge, to solve granule sludge training
Support the time it is long the problem of.
Technical scheme provided by the invention is：
A kind of continuous quadratic stream coagulation air lift fluidized bed reactor of continuous culture aerobic particle mud with handling sewage, the reaction
Device main part is made up of inside and outside two cylindrical lucite, including fluidization regions（14）, water particle Disengagement zone（20）, return passage
(13), decanting zone（2）Gong Sige areas, wherein：
（1）Fluidization regions（14）, it is made up of the cylindrical lucite of inside, passes through baffle plate below fluidization regions (14)（8）, will be upper
Streaming is aerated leads into fluidization regions with up flow type current（14）, fluidization regions（14）Top sets multilayer incline-plate（19）Form water particle point
From area（20）, pass through delivery port（18）Carry out water particle separation, multilayer incline-plate（19）Lower outer cylindrical lucite inwall with
Return passage (13) is formed between inner cylinder lucite outer wall, is enclosed in aeration（5）With water inlet（7）Lower section is separated into decanting zone
（3）, the granule sludge of sedimentation passes through sludge valve（1）Discharge；It is provided with fluidization regions (14) and passes through stirring-head（16）The stirring of control
Rod（15）, granulated pellet sludge is in up flow type water inlet（7）With up flow type aeration opening（5）Effect enter fluidization regions（14）,
Stirring rod（15）And aeration carries out Secondary Flow hydraulic shear with ascending current effect；
（2）Water particle Disengagement zone（20）：Fluidization regions（14）Top sets multilayer incline-plate（19）Form water particle Disengagement zone（20）Aeration with
Ascending current acts on lower clapboard（20）, pass through delivery port（18）Carry out water particle separation；
（3）Return passage (13)：By being formed between external cylindrical lucite inwall and inner cylinder lucite outer wall, fluidization regions
Interior fine particle exceedes inner cylinder lucite under fluidization, and the current rate of climb slows down, entered under gravity
Enter return passage (13), return passage (13) bottom can connect with fluidization regions, and the granule sludge of backflow enters to become a mandarin again under gravity
Change area；
（4）Decanting zone（2）：Enclosed located at aeration（5）With water inlet（7）Lower section, aerobic particle mud is with training under fluidized state
Support the extension of time, body weight is continuously increased, when its quality exceedes fluidisation towing force, produce sedimentation and from fluidization regions（13）Into heavy
Area drops（2）, decanting zone（2）It is interior to be provided with mud discharging mouth（1）, excessive sludge settling can pass through mud discharging mouth（1）Discharge.
Described reactor, it is preferable that outer barrel bottom is in cone shape.
Further, described reactor also includes diffusing reflection plate（17）, be advantageous to raising light and pass through peep hole
Observing effect.
Further, described reactor, peep hole is additionally provided with the external cylindrical（11）；The stirring-head（16）Be by
Motor driven.
Meanwhile present invention also offers a kind of method of the reactor fast culture granule sludge described in utilization, this method
Comprise the following steps：
（1）Aerobic activated sludge selects：The activated sludge of the sewage quality selection different sewage handling process handled as needed,
To ensure the species and quantity of peculiar speck in activated sludge；
（2）Dehydration：By physical method, reduce the moisture content of ordinary activated sludge, the method for dehydration can be natural air drying,
Vacuum filtration or Centrifugal dehydration method, make it become closely knit；
（3）It is granulated：The activated sludge of described dehydration is passed through into Mechanical Crushing, stirring, cutting or addition shape-fixing agent such as agar etc.
Method is broken into the mud granule similar to granularity, and controls particle diameter by screen cloth, it is trained with needing
Foster granularity is similar；
（4）The granulated pellet sludge is added in the reactor described in any one of claim 1 to 5；
（5）Sewage is from sewage pump（6）By flowmeter（4）From water inlet（7）Ascend into fluidization regions（14）, air is through aerator
（3）And flowmeter（4）Enclosed from aeration（5）Aeration quantity enters fluidization regions（14）, in stirring rod（15）Rational two are formed under stirring
Secondary flow field；
（6）Under hydraulic shear effect caused by aeration, current and stirring, culture preliminarily forms aerobic particle mud in 15 days；
（7）Aerobic particle mud is continuously increased with the extension of incubation time, weight under fluidized state, when its quality exceedes stream
When changing towing force, generation is settled into decanting zone（2）, reach the purpose of aerobic particle mud continuous updating, excessive sludge settling can
To pass through mud discharging mouth（1）Discharge；
（8）Continuous culture and the clear water after fluidized bed processing pass through separating inclined plate（19）Into Disengagement zone（20）, then pass through again
Discharge outlet 18 is discharged.
The beneficial effects of the invention are as follows：Secondary Flow air lift fluid bed provided by the invention is used using granulated pellet sludge, quickly
Granule sludge is cultivated, the species and extracellular polymeric of distinctive abundant speck, have good settleability in granulated pellet sludge
Can and preferable resistance to waterpower shear action, the roles of induction core and primary particles is play in the reactor, using cultivating
Grain sludge, so as to greatly shorten the formation time of aerobic particle mud, has in the aerobic incubation of granulated pellet sludge
Good wastewater treatment efficiency, the purpose handled in culture is realized, shorten the time required for granule sludge starts.
Brief description of the drawings
Fig. 1 is that the continuous culture aerobic particle mud of the present invention reacts with handling the continuous quadratic stream coagulation air lift fluidized bed of sewage
Device（SAFB）Structural representation.
Wherein, 1. sludge valve, 2. sludge settling areas, 3. aerators, 4. flowmeters, 5. aeration circles, 6. sewage pumps, 7. sewage
Entrance, 8. baffle plates, 9. computers, 10. high speed cameras, 11 peep holes, 12 light sources, 13. return passages, 14 fluidization regions, 15 stirrings
Rod, 16 motors（Stirring-head）, 17 diffusing reflection plates, 18 delivery ports, 19 swash plates, 20 water particle Disengagement zone.
Embodiment
Example one：The Secondary Flow air lift fluid bed of granulated pellet sludge rapidly cultivating aerobic particle sludge of the present invention（SAFB）
Reactor
Refer to Fig. 1, the Secondary Flow air lift fluidized-bed reactor of granulated pellet sludge rapidly cultivating aerobic particle sludge of the present invention
（SAFB）Main part is made up of inside and outside two cylindrical lucite, and outer barrel internal diameter 173mm, high 700mm, apopore is away from top
30mm, effective volume 6.3L, lower cone body high 150mm, effective volume 0.5L, inner cylinder internal diameter 100mm, high 650mm, effective body
Product 5.1L.
Fluidization regions 14 are wherein formed by the cylindrical lucite of inside, the lower section of fluidization regions 14 is by baffle plate 8, by up flow type
Aeration leads into fluidization regions 14 with up flow type current, and the top of fluidization regions 14 sets multilayer incline-plate 19 and forms water particle Disengagement zone 20, leads to
Cross delivery port 18 and carry out water particle separation, the lower outer cylindrical lucite inwall of multilayer incline-plate 19 and inner cylinder lucite
Return passage 13 is formed between outer wall, is separated into decanting zone 3 below aeration circle 5 with water inlet 7, the granule sludge of sedimentation passes through sludge
Valve 1 is discharged.
Fluidization regions 13：Fluidization regions 13 are provided with inner cylinder lucite, in it and stirred by what stirring-head 16 controlled
Rod 15 is mixed, granulated pellet sludge enters fluidization regions 13 in the effect of up flow type water inlet 7 and up flow type aeration opening 5, in stirring rod
15 and aeration with ascending current effect carry out Secondary Flow hydraulic shear.
Water particle Disengagement zone 20：The top of fluidization regions 14 sets multilayer incline-plate 19 and forms water particle Disengagement zone 20 in aeration and ascending current
Lower clapboard 20 is acted on, water particle separation is carried out by delivery port 18, particle is flowed out by inclined plate sedimentation, clear water by delivery port.
Return passage 13：By being formed between external cylindrical lucite inwall and inner cylinder lucite outer wall, fluidization regions
Interior fine particle exceedes inner cylinder lucite under fluidization, and the current rate of climb slows down, entered under gravity
Enter return passage 13, the bottom of return passage 13 can connect with fluidization regions, and the granule sludge of backflow enters fluidization regions again under gravity；
Decanting zone 2：Located at aeration circle 5 and the lower section of water inlet 7, aerobic particle mud the prolonging with incubation time under fluidized state
Long, body weight is continuously increased, when its quality exceedes fluidisation towing force, produce sedimentation and from fluidization regions（13）Into decanting zone 2, sedimentation
Mud discharging mouth 1 is provided with area 2, excessive sludge settling can be discharged by mud discharging mouth 1.
Example two：The inventive method embodiment
Utilize the sewage in the reactor for treatment sewage farm of embodiment one.
1. aerobic activated sludge selects：The activity of the sewage quality selection different sewage handling process handled as needed is dirty
Mud, to ensure the species and quantity of peculiar speck in activated sludge, the activated sludge for the process section that selection is active and concentration is maximum,
The activated sludge of aeration tank activated sludge, different industrial treatment biological treatment sections such as sewage treatment plants such as breeding wastewater exposes
Activated sludge in gas pond.The aeration tank activated sludge of Hengyang City west of a city sewage work sewage treatment plant is selected in the present embodiment.
2. dehydration：Above-mentioned activated sludge is selected, by physical method, the moisture content of ordinary activated sludge is reduced, is dehydrated
Method the methods of being natural air drying, vacuum filtration, centrifugal dehydration, it is become closely knit.
3. it is granulated：Then selection passes through Mechanical Crushing, stirring, cutting or addition shape-fixing agent by the activated sludge being dehydrated
As the methods of agar, is broken into the mud granule similar to granularity, but the non-breakable micro- life of these methods
The eucaryotic cell structure of thing.The compactness of mud granule will can not only bear waterpower or aeration shearing force in reactor, and can guarantee that
Good mass transfer effect, oxygen and nutriment is set to be diffused into inside mud granule.Compact grain sludge after broken, passes through
The screen cloth of 60-80 mesh controls particle diameter, makes it similar to the granularity that needs are cultivated.
4. selection granule sludge 20g is added to the Secondary Flow air lift fluid bed of example one（SAFB）.
5. sewage is from sewage pump 6 by flowmeter 4 from the upflow velocity 2.5m/h of water inlet 7 enters fluidization regions 14, air passes through
Aerator 3 and flowmeter 4 enter fluidization regions 14 from 5 aeration quantity 7L/min of aeration circle, the mixing speed 10r/min's of stirring rod 15
Rational quadratic equation eddying field is formed under control.
6. under hydraulic shear effect caused by aeration, current and stirring, 15 days aerobic particle muds of culture preliminarily form.
7. aerobic particle mud is continuously increased with the extension of incubation time, body weight under fluidized state, when its quality surpasses
When crossing fluidisation towing force, the purpose for settling and into decanting zone 2, reaching aerobic particle mud continuous updating, excessive sludge settling are produced
It can be discharged by mud discharging mouth 1.
8. continuous culture and the clear water after fluidized bed processing enter Disengagement zone 20 by separating inclined plate 19, then again through row
Discharge at the mouth of a river 18.
Closely knit mud granule is put into reactor in the present embodiment, the reactor is Secondary Flow air lift fluid bed
（Secondary-flow Airlift Fluidized Bed SAFB）, the reactor is using the design of bicylindrical cylinder, inner cylinder lower end
It is fluidization regions if outer swash plate, in inner cylinder, there is stirring slurry centre, increases quadratic equation eddying field effect in whipping process, slows down fluid rising
Speed, flow into aerating gas with the water that bottom enters and shear sludge reinforcing granulated pellet jointly, improve the collision of particle and matrix
Chance, plastotype is sheared to mud granule, the fine grained in fluid bed overflows across inner cylinder border through impact, enters under gravity interior
Cylinder and the return passage among outer barrel, and continue to sink and enter fluidization regions to continue to cultivate by the outer swash plate of inner cylinder, under outer barrel
Portion sets conical cylinder, and aeration flexible pipe is set in the middle part of vertebra shape, and water inlet pipe sets aeration flexible pipe bottom, is just fluidized after entering system by aeration, under
Portion intakes and air, and the inner cylinder fluidization regions that lead into of the outer swash plate through inner cylinder realize that fluidisation, then bottom set sludge settling area, greatly
Granule sludge sinks to bottom accumulation under gravity, is discharged after excessive through sludge valve.Water inlet and aeration control by flowmeter,
Peephole is set in the middle part of inner cylinder, peephole shoots mud granule and bubble diameter, the back of the body by laser particle analyzer and high speed camera
After set diffusing reflection plate 17, be advantageous to improve observing effect of the light by peep hole.
In an instantiation, its result shows, by the reactor for treatment sewage of the present invention, COD clearances are
95.75/%th, BOD clearances are 94.83%, SS clearances are 96.41%, NH3-N clearances are 91.48%, TP clearances are
95.31%th, TN clearances are 85.74%.
Claims (8)
1. a kind of continuous quadratic stream coagulation air lift fluidized bed reactor of continuous culture aerobic particle mud with handling sewage, described anti-
Device main part is answered to be made up of inside and outside two cylindrical lucite, including fluidization regions（14）, water particle Disengagement zone（20）, return passage
(13), decanting zone（2）Gong Sige areas, wherein：
（1）Fluidization regions（14）, it is made up of the cylindrical lucite of inside, passes through baffle plate below fluidization regions (14)（8）, will be upper
Streaming is aerated leads into fluidization regions with up flow type current（14）, fluidization regions（14）Top sets multilayer incline-plate（19）Form water particle point
From area（20）, pass through delivery port（18）Carry out water particle separation, multilayer incline-plate（19）Lower outer cylindrical lucite inwall with
Return passage (13) is formed between inner cylinder lucite outer wall, is enclosed in aeration（5）With water inlet（7）Lower section is separated into decanting zone
（3）, the granule sludge of sedimentation passes through sludge valve（1）Discharge；It is provided with fluidization regions (14) and passes through stirring-head（16）The stirring of control
Rod（15）, granulated pellet sludge is in up flow type water inlet（7）With up flow type aeration opening（5）Effect enter fluidization regions（14）,
Stirring rod（15）And aeration carries out Secondary Flow hydraulic shear with ascending current effect；
（2）Water particle Disengagement zone（20）：Fluidization regions（14）Top sets multilayer incline-plate（19）Form water particle Disengagement zone（20）Aeration with
Ascending current acts on lower clapboard（20）, pass through delivery port（18）Carry out water particle separation；
（3）Return passage (13)：By being formed between external cylindrical lucite inwall and inner cylinder lucite outer wall, fluidization regions
Interior fine particle exceedes inner cylinder lucite under fluidization, and the current rate of climb slows down, entered under gravity
Enter return passage (13), return passage (13) bottom can connect with fluidization regions, and the granule sludge of backflow enters to become a mandarin again under gravity
Change area；
（4）Decanting zone（2）：Enclosed located at aeration（5）With water inlet（7）Lower section, aerobic particle mud is with training under fluidized state
Support the extension of time, body weight is continuously increased, when its quality exceedes fluidisation towing force, produce sedimentation and from fluidization regions（13）Into heavy
Area drops（2）, decanting zone（2）It is interior to be provided with mud discharging mouth（1）, excessive sludge settling can pass through mud discharging mouth（1）Discharge.
2. reactor as claimed in claim 1, it is characterised in that：Outer barrel bottom is in cone shape.
3. reactor as claimed in claim 1, it is characterised in that：Also include diffusing reflection plate（17）.
4. reactor as claimed in claim 1, it is characterised in that：Peep hole is additionally provided with the external cylindrical（11）.
5. reactor as claimed in claim 1, it is characterised in that：The stirring-head（16）It is by motor driven.
6. using the method for the reactor fast culture granule sludge described in any one of claim 1 to 5, its feature includes as follows
Step：
（1）Aerobic activated sludge selects：The activated sludge of the sewage quality selection different sewage handling process handled as needed,
To ensure the species and quantity of peculiar speck in activated sludge；
（2）By physical method, the moisture content of ordinary activated sludge is reduced, the method for dehydration can be that natural air drying, vacuum are taken out
Filter or Centrifugal dehydration method, make it become closely knit；
（3）The methods of by the activated sludge of described dehydration by Mechanical Crushing, stirring, cutting or addition shape-fixing agent such as agar
The mud granule similar to granularity is broken into, and particle diameter is controlled by screen cloth, makes what it was cultivated with needs
Granularity is similar；
（4）The granulated pellet sludge is added in the reactor described in any one of claim 1 to 5；
（5）Sewage is from sewage pump（6）By flowmeter（4）From water inlet（7）Ascend into fluidization regions（14）, air is through aerator
（3）And flowmeter（4）Enclosed from aeration（5）Aeration quantity enters fluidization regions（14）, in stirring rod（15）Rational two are formed under stirring
Secondary flow field；
（6）Under hydraulic shear effect caused by aeration, current and stirring, culture preliminarily forms aerobic particle mud in 15 days；
（7）Aerobic particle mud is continuously increased with the extension of incubation time, weight under fluidized state, when its quality exceedes stream
When changing towing force, generation is settled into decanting zone（2）, reach the purpose of aerobic particle mud continuous updating, excessive sludge settling can
To pass through mud discharging mouth（1）Discharge；
（8）Continuous culture and the clear water after fluidized bed processing pass through separating inclined plate（19）Into Disengagement zone（20）, then pass through again
Discharge outlet 18 is discharged.
7. according to the method for claim 6, it is characterised in that：Step（1）The maximum process section of middle selection activity and concentration
Activated sludge.
8. according to the method for claim 7, it is characterised in that：Step（1）Described in activated sludge at sanitary sewage
Manage the activity in the aeration tank activated sludge of factory, the activated sludge of different industrial treatment biological treatment sections such as breeding wastewater aeration tank
Sludge.
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| CN201710950510.9A CN107601656B (en) | 2017-10-13 | 2017-10-13 | Device for rapidly culturing aerobic granular sludge secondary flow air-stripping fluidized bed by granulating granular sludge |
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| CN201710950510.9A CN107601656B (en) | 2017-10-13 | 2017-10-13 | Device for rapidly culturing aerobic granular sludge secondary flow air-stripping fluidized bed by granulating granular sludge |
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Cited By (5)
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| CN108383349A (en) * | 2018-05-14 | 2018-08-10 | 上海城市水资源开发利用国家工程中心有限公司 | A kind of novel residual active sludge carbon source retracting device and method |
| CN108423780A (en) * | 2018-03-21 | 2018-08-21 | 国电南京电力试验研究有限公司 | A kind of novel waste water efficient flocculating processing system and method |
| CN108946912A (en) * | 2018-08-13 | 2018-12-07 | 竺林坤 | A kind of oxidation oxidation reaction apparatus for rural sewage treatment |
| CN111498991A (en) * | 2020-04-29 | 2020-08-07 | 南京大学 | Method for promoting proliferation and activity improvement of anaerobic granular sludge |
| WO2020237387A1 (en) * | 2019-05-31 | 2020-12-03 | Uti Limited Partnership | A simple method for desiccation and reactivation of aerobic granules |
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| WO2020237387A1 (en) * | 2019-05-31 | 2020-12-03 | Uti Limited Partnership | A simple method for desiccation and reactivation of aerobic granules |
| CN111498991A (en) * | 2020-04-29 | 2020-08-07 | 南京大学 | Method for promoting proliferation and activity improvement of anaerobic granular sludge |
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| CN107601656B (en) | 2021-01-19 |
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