CN108675440A - A method of it is prepared by sludge accumulation body and aerobic particle mud is promoted quickly to be formed - Google Patents
A method of it is prepared by sludge accumulation body and aerobic particle mud is promoted quickly to be formed Download PDFInfo
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- CN108675440A CN108675440A CN201810616900.7A CN201810616900A CN108675440A CN 108675440 A CN108675440 A CN 108675440A CN 201810616900 A CN201810616900 A CN 201810616900A CN 108675440 A CN108675440 A CN 108675440A
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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
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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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
Abstract
The invention belongs to biological wastewater treatment fields, are related to a kind of method for promoting aerobic particle mud quickly to be formed by the preparation of sludge accumulation body.This method comprises the following steps：(1) it takes ordinary activated sludge and concentrates；(2) cationic high molecular polymer not soluble in water is added；(3) it is stirring evenly and then adding into glacial acetic acid；(4) it adds lye and adjusts mixed liquor pH value to alkalinity；(5) it will collect and be seeded in sequencing batch reactor SBR after the sludge accumulation body cleaning and dipping of formation and run；(6) it realizes after SBR is run 3 10 days and granulates completely, aerobic particle mud remains to holding structure stabilization after longtime running.The present invention can promote the quick formation of aerobic particle mud, and easy to operate efficient, be easy to practical application.
Description
Technical field
The invention belongs to biological wastewater treatment fields, and in particular to a kind of prepared by sludge accumulation body promotes aerobic grain
The method that sludge is quickly formed.
Background technology
Aerobic particle mud is a kind of Novel sewage biologic treating technique emerging in recent years and traditional activated sludge
Method is compared, and has the function of that compact structure, settling property are good, biomass is high and has synchronous denitrification dephosphorizing, anti-shock loading, resistance to
The advantages that poisonous and harmful substance and small floor space.But the problems such as aerobic particle mud system start-up time is long still restricts this
The development of technology.The exploitation of TU Delft polytechnical universityTechnology needs 3-5 months in practical engineering application
Domestication, which cultivates one's ability, realizes aerobic sludge granulation.Document (the Aerobic sludge granulation in that Li Jun etc. is delivered
A full-scale sequencing batch reactor) report practical scale sequencing batch reactor (SBR) pass through
Culture in 337 days realizes aerobic sludge granulation.Currently, it is special to promote the correlative study that aerobic particle mud is quickly formed to have
Profit application, but disclosed patent be all by change reactor operating parameter and structure or reactor operation in add object
The method of matter promotes the quick formation of aerobic particle mud, and the settling property of initial operating stage sludge is poor, realize complete particle
Change basic need 2-4 weeks or so.He Jian etc. has applied for a kind of preparation method of aerobic particle mud, high using the cation of amidino groups
Molecular chemistry medicament prepares aerobic particle mud, but the patent is without reference to the characteristic index for preparing aerobic particle mud, such as grain
Diameter, sedimentation index etc., do not refer to yet and prepare the operating condition of particle in the reactor, while the cation high molecular chemistry of amidino groups
Medicament prepares difficulty, and cost is higher.
Find a kind of method that can rapidly promote the formation of aerobic particle mud aggregation so that reactor start-up operation is just
Phase can obtain good settling property, while aerobic particle mud system can be run steadily in the long term to good in the process of running
The application and development of oxygen granule sludge technology are of great significance.Cation polymeric flocculant has pole to active floc sludge
Strong flocculation, can promote the formation of sludge accumulation body, but its to sludge activity, there are certain inhibiting effect.Therefore,
Finding a kind of more suitable cation polymeric flocculant, intensity is high, formation of the strong sludge accumulation body of stability promoting,
So that aerobic particle mud system initial start stage just has good settling property and can run steadily in the long term to aerobic grain dirt
Mud technology has very important realistic meaning and economic value in the application of field of waste water treatment.
Invention content
It is an object of the invention in order to solve in prior art, initial operating stage sludge settling property is poor, realize complete
The granulating time is longer (2-8 weeks or so), and common cationic high polymer coagulant (such as polyacrylamide) has sludge activity
It certain inhibiting effect and can be provided a kind of by cationic high molecular polymer system not soluble in water with the defect that water outlet is lost in
Standby sludge accumulation body is come the method that promotes aerobic particle mud quickly to be formed.
To achieve the above object, the present invention uses following technical scheme：
A method of it is prepared by sludge accumulation body and aerobic particle mud is promoted quickly to be formed, the method includes following steps
Suddenly：
(1) 1L ordinary activated sludge gravity concentrations are taken；
(2) cationic high molecular polymer not soluble in water is added in the ordinary activated sludge after step (1) concentration；
(3) after stirring evenly, glacial acetic acid is added, continues to stir, obtains mixed liquor；
(4) lye is added in the mixed liquor after step (3), adjusts mixed liquor pH value to alkalinity, precipitation obtains sludge accumulation body；
(5) it will collect and be seeded in SBR after the sludge accumulation body tap water cleaning and dipping of step (4) formation, then press in
Water, reaction, precipitation, water outlet and idle mode are run；
(6) SBR is run 3-10 days, and for the sludge in reactor mainly based on aerobic particle mud, particulates' properties are good, long-term to transport
Aerobic particle mud remains to holding structure stabilization after row.
In the step (1), ordinary activated sludge is derived from the flco activated sludge of laboratory routine culture, gravity concentration
Sludge concentration is 2-20g/L afterwards；
In the step (2), the dosage for the chitosan preferentially selected is 2%-50% (in terms of dewatered sludge quality, w/w).
In the step (3), the glacial acetic acid amount using mechanical agitation, mixing speed 100-1000rpm, addition makes to mix
Conjunction liquid acetic acid concentration is 0.2%-5%, continues to stir 1-2min.
In the step (4), the lye added is NaOH, and a concentration of 2-6mol/L, adjusting pH of mixed is 7.5-11.
In the step (5), sludge accumulation body is cleaned 2-3 times with tap water, and each soaking time is 0.5-2.5h；It receives
The average grain diameter of the sludge accumulation body integrated is 0.5-2.5mm, the sludge volume index (SVI of 5min and 30min5And SVI30) be
60-90mL/g；The running stages of reaction of SBR carry out anaerobism stirring, aerobic aeration operation or only carry out aerobic aeration operation.
In the step (6), aerobic particle mud structure is closely knit after operation 3-10 days, and sludge average grain diameter is 0.5-
2.0mm, SVI5And SVI30For 40-70mL/g, aerobic particle mud accounts for 75% or more in reactor；Longtime running is 60-100
It.
The present invention technical concept be：Aerobic particle mud have compact structure, settling property is good, biomass is high and energy
The advantages that synchronous denitrification dephosphorizing, anti-shock loading and resistance to poisonous and harmful substance, has in biological wastewater treatment field and widely answers
Use foreground.But the problems such as aerobic particle mud system start-up time is long still restricts the development of the technology.
Chitosan is a kind of natural macromolecule amylose, does not have inhibiting effect to microbial activity.Meanwhile chitosan contains ammonia
Base is natural cationic flocculant.
It adds chitosan and using acetic acid to carry out dissolving can make chitosan as adhesive and skeleton, promote active floc sludge
Quickly form sludge accumulation body.After pH is adjusted as alkalinity, the chitosan of dissolving can be precipitated and be adhered to sludge accumulation body in water
On so that the chitosan added will not be lost in normal operation with water outlet, to ensure the stability of sludge accumulation body and good
Good settleability.
Since sludge accumulation body has good settling property, in SBR culture can quickly form that structure is closely knit, settleability
It can better aerobic particle mud.
Beneficial effects of the present invention are mainly reflected in：
(1) chitosan rich content in nature is prepared simply, cheap, is a kind of natural cation high molecular wadding
Solidifying agent, does not have inhibiting effect to microbial activity in sludge.
(2) by preparing sludge accumulation body, the time of aerobic particle mud formation is highly shortened, while in reactor
The initial stage of startup stage can obtain good sludge settling property, be conducive to the stable operation of aerobic particle mud system.
(3) it when Fragmentation Phenomena occurs in aerobic particle mud system, can be carried with the present invention with the floc sludge of water outlet discharge
The method of confession quickly forms sludge accumulation body, then puts into granular sludge reactor and run again, ensure that aerobic particle mud
Long-term stable operation.
(4) what prepared by sludge accumulation body is easy to operate, is easy to practical application.
Description of the drawings
Fig. 1 is the shape appearance figure of the sludge accumulation body prepared.
Fig. 2 is the aerobic particle mud shape appearance figure after running 6 days.
Specific implementation mode
Present disclosure is illustrated in further detail by the following examples.
Embodiment 1
A method of it is prepared by sludge accumulation body and aerobic particle mud is promoted quickly to be formed, included the following steps：
(1) take the ordinary activated sludge of 1L laboratory cultures in beaker, sludge concentration 2g/L；
(2) the chitosan 0.04g of dewatered sludge quality 2% is added in the sludge of step (1)；
(3) it uses machine mixer, rotating speed 100rpm to stir evenly sludge and chitosan, 2mL glacial acetic acids is then added
(mixed liquid concentration 0.2%), 100rpm stir 2min；
(4) NaOH solution of 3mol/L is added dropwise afterwards in step (3), it is 7.5 to adjust pH；
(5) stop stirring afterwards in step (4), pour out supernatant after precipitating 10min, tap water cleaning and dipping sludge accumulation body is used in combination
3 times, each 0.5h, it is 0.55mm, SVI to obtain sludge average grain diameter5For 85mL/g, SVI30For 80mL/g；
(6) the sludge accumulation body that step (5) is collected is seeded to sbr reactor device, by water inlet, anaerobism stirring, aerobic aeration, sunk
Shallow lake, water outlet and idle mode are run, and SBR water-filling ratios are 50%, cycle of operation 6h：Water inlet 10min, anaerobism stirring 90min,
It is aerated 180min, precipitation 3-5min, water outlet 10min, idle 65-67min；
(7) closely knit aerobic particle mud is formed after running 3 days in SBR, sludge average grain diameter is 0.55mm, SVI5For 70mL/
G, SVI30For 65mL/g, SVI30/SVI5It is 0.93, aerobic particle mud accounts for 75% or more, after operation 60 days in SBR in reactor
Aerobic particle mud remain to holding structure stabilization.
Embodiment 2
A method of it is prepared by sludge accumulation body and aerobic particle mud is promoted quickly to be formed, included the following steps：
(1) take the ordinary activated sludge of 1L laboratory cultures in beaker, sludge concentration 4g/L；
(2) the chitosan 0.4g of dewatered sludge quality 10% is added in the sludge of step (1)；
(3) it uses machine mixer, rotating speed 200rpm to stir evenly sludge and chitosan, 5mL glacial acetic acids is then added
(mixed liquid concentration 0.5%), 200rpm stir 2min；
(4) NaOH solution of 6mol/L is added dropwise afterwards in step (3), it is 9 to adjust pH；
(5) stop stirring afterwards in step (4), pour out supernatant after precipitating 10min, tap water cleaning and dipping sludge accumulation body is used in combination
3 times, each 0.5h, it is 0.93mm, SVI to obtain sludge average grain diameter5For 70mL/g, SVI30For 68mL/g；
(6) the sludge accumulation body that step (5) is collected is seeded to sbr reactor device, presses water inlet, aerobic aeration, precipitation, water outlet and spare time
The mode set is run, and SBR water-filling ratios are 50%, cycle of operation 4h：Water inlet 10min, aerobic aeration 180min, precipitation 3-
5min, water outlet 10min, idle 35-37min；
(7) closely knit aerobic particle mud is formed after running 5 days in SBR, sludge average grain diameter is 0.85mm, SVI5For 60mL/
G, SVI30For 55mL/g, SVI30/SVI5It is 0.92, aerobic particle mud accounts for 85% or more, after operation 75 days in SBR in reactor
Aerobic particle mud remain to holding structure stabilization.
Embodiment 3
A method of it is prepared by sludge accumulation body and aerobic particle mud is promoted quickly to be formed, included the following steps：
(1) take the ordinary activated sludge of 1L laboratory cultures in beaker, it is 7g/L to be concentrated into sludge concentration；
(2) the chitosan 1.4g of dewatered sludge quality 20% is added in the sludge of step (1)；
(3) it uses machine mixer, rotating speed 300rpm to stir evenly sludge and chitosan, 5mL glacial acetic acids is then added
(mixed liquid concentration 0.5%), 300rpm stir 1min；
(4) NaOH solution of 5mol/L is added dropwise afterwards in step (3), it is 10 to adjust pH；
(5) stop stirring afterwards in step (4), pour out supernatant after precipitating 10min, tap water cleaning and dipping sludge accumulation body is used in combination
2 times, each 2h, it is 1.3mm, SVI to obtain sludge average grain diameter5For 60mL/g, SVI30For 60mL/g；
(6) the sludge accumulation body that step (5) is collected is seeded to sbr reactor device, by water inlet, anaerobism stirring, aerobic aeration, sunk
Shallow lake, water outlet and idle mode are run, and SBR water-filling ratios are 50%, cycle of operation 6h：Water inlet 10min, anaerobism stirring 90min,
Aerobic aeration 180min, precipitation 3-5min, water outlet 10min, idle 65-67min；
(7) closely knit aerobic particle mud is formed after running 5 days in SBR, sludge average grain diameter is 1.2mm, SVI5For 55mL/g,
SVI30For 50mL/g, SVI30/SVI5It is 0.91, aerobic particle mud accounts for 90% or more, after operation 60 days in SBR in reactor
Aerobic particle mud remains to holding structure stabilization.
Embodiment 4
A method of it is prepared by sludge accumulation body and aerobic particle mud is promoted quickly to be formed, included the following steps：
(1) take the ordinary activated sludge of 1L laboratory cultures in beaker, it is 6g/L to be concentrated into sludge concentration；
(2) the chitosan 0.3g of dewatered sludge quality 5% is added in the sludge of step (1)；
(3) it uses machine mixer, rotating speed 200rpm to stir evenly sludge and chitosan, 15mL glacial acetic acids is then added
(mixed liquid concentration 1.5%), 200rpm stir 2min；
(4) NaOH solution of 4mol/L is added dropwise afterwards in step (3), it is 9 to adjust pH；
(5) stop stirring afterwards in step (4), pour out supernatant after precipitating 10min, tap water cleaning and dipping sludge accumulation body is used in combination
3 times, each 1.5h, it is 0.9mm, SVI to obtain sludge average grain diameter5For 70mL/g, SVI30For 68mL/g；
(6) the sludge accumulation body that step (5) is collected is seeded to sbr reactor device, presses water inlet, aerobic aeration, precipitation, water outlet and spare time
The mode set is run, and SBR water-filling ratios are 50%, cycle of operation 4h：Water inlet 10min, aerobic aeration 180min, precipitation 3-
5min, water outlet 10min, idle 35-37min；
(7) closely knit aerobic particle mud is formed after running 7 days in SBR, sludge average grain diameter is 0.8mm, SVI5For 60mL/g,
SVI30For 55mL/g, SVI30/SVI5It is 0.92, aerobic particle mud accounts for 75% or more, after operation 70 days in SBR in reactor
Aerobic particle mud remains to holding structure stabilization.
Embodiment 5
A method of it is prepared by sludge accumulation body and aerobic particle mud is promoted quickly to be formed, included the following steps：
(1) take the ordinary activated sludge of 1L laboratory cultures in beaker, it is 8g/L to be concentrated into sludge concentration；
(2) the chitosan 2g of dewatered sludge quality 25% is added in the sludge of step (1)；
(3) it uses machine mixer, rotating speed 600rpm to stir evenly sludge and chitosan, 10mL glacial acetic acids is then added
(mixed liquid concentration 1%), 600rpm stir 1min；
(4) NaOH solution of 6mol/L is added dropwise afterwards in step (3), it is 11 to adjust pH；
(5) stop stirring afterwards in step (4), pour out supernatant after precipitating 10min, tap water cleaning and dipping sludge accumulation body is used in combination
3 times, each 2h, it is 1.2mm, SVI to obtain sludge average grain diameter5For 60mL/g, SVI30For 60mL/g；
(6) the sludge accumulation body that step (5) is collected is seeded to sbr reactor device, by water inlet, anaerobism stirring, aerobic aeration, sunk
Shallow lake, water outlet and idle mode are run, and SBR water-filling ratios are 50%, cycle of operation 6h：Water inlet 10min, anaerobism stirring
120min, aerobic aeration 180min, precipitation 3-5min, water outlet 10min, idle 35-37min；
(7) closely knit aerobic particle mud is formed after running 10 days in SBR, sludge average grain diameter is 1.1mm, SVI5For 50mL/
G, SVI30For 48mL/g, SVI30/SVI5It is 0.96, aerobic particle mud accounts for 90% or more, after operation 90 days in SBR in reactor
Aerobic particle mud remain to holding structure stabilization.
Embodiment 6
A method of it is prepared by sludge accumulation body and aerobic particle mud is promoted quickly to be formed, included the following steps：
(1) take the ordinary activated sludge of 1L laboratory cultures in beaker, it is 10g/L to be concentrated into sludge concentration；
(2) the chitosan 5g of dewatered sludge quality 50% is added in the sludge of step (1)；
(3) it uses machine mixer, rotating speed 1000rpm to stir evenly sludge and chitosan, 40mL glacial acetic acids is then added
(mixed liquid concentration 4%), 1000rpm stir 1min；
(4) NaOH solution of 5mol/L is added dropwise afterwards in step (3), it is 11 to adjust pH；
(5) stop stirring afterwards in step (4), pour out supernatant after precipitating 10min, tap water cleaning and dipping sludge accumulation body is used in combination
3 times, each 2.5h, it is 2.2mm, SVI to obtain sludge average grain diameter5For 65mL/g, SVI30For 65mL/g；
(6) the sludge accumulation body that step (5) is collected is seeded to sbr reactor device, presses water inlet, aerobic aeration, precipitation, water outlet and spare time
The mode set is run, and SBR water-filling ratios are 50%, cycle of operation 4h：Water inlet 10min, aerobic aeration 180min, precipitation 3-
5min, water outlet 10min, idle 35-37min；
(7) closely knit aerobic particle mud is formed after running 8 days in SBR, sludge average grain diameter is 1.8mm, SVI5For 55mL/g,
SVI30For 50mL/g, SVI30/SVI5It is 0.91, aerobic particle mud accounts for 80% or more, after operation 80 days in SBR in reactor
Aerobic particle mud remains to holding structure stabilization.
Embodiment 7
A method of it is prepared by sludge accumulation body and aerobic particle mud is promoted quickly to be formed, included the following steps：
(1) take the ordinary activated sludge of 1L laboratory cultures in beaker, it is 20g/L to be concentrated into sludge concentration；
(2) the chitosan 5g of dewatered sludge quality 25% is added in the sludge of step (1)；
(3) it uses machine mixer, rotating speed 800rpm to stir evenly sludge and chitosan, 50mL glacial acetic acids is then added
(mixed liquid concentration 5%), 800rpm stir 1min；
(4) NaOH solution of 3mol/L is added dropwise afterwards in step (3), it is 8 to adjust pH；
(5) stop stirring afterwards in step (4), pour out supernatant after precipitating 10min, tap water cleaning and dipping sludge accumulation body is used in combination
3 times, each 1.5h, it is 2.5mm, SVI to obtain sludge average grain diameter5For 75mL/g, SVI30For 70mL/g；
(6) the sludge accumulation body that step (5) is collected is seeded to sbr reactor device, by water inlet, anaerobism stirring, aerobic aeration, sunk
Shallow lake, water outlet and idle mode are run, and SBR water-filling ratios are 50%, cycle of operation 6h：Water inlet 10min, anaerobism stir 90min,
Aerobic aeration 180min, precipitation 3-5min, water outlet 10min, idle 65-67min；
(7) closely knit aerobic particle mud is formed after running 7 days in SBR, sludge average grain diameter is 2.0mm, SVI5For 58mL/g,
SVI30For 55mL/g, SVI30/SVI5It is 0.95, aerobic particle mud accounts for 85% or more, after operation 100 days in SBR in reactor
Aerobic particle mud remain to holding structure stabilization.
This hair can be understood and applied the above description of the embodiments is intended to facilitate those skilled in the art
It is bright.Person skilled in the art obviously can easily to these embodiments, various modification can be adapted, and described herein
General Principle is applied in other embodiment without having to go through creative labor.Therefore, the present invention is not limited to implementations here
Example, the scope of the present invention are limited by claim and its equivalent.
Claims (7)
1. a kind of preparing the method for promoting aerobic particle mud quickly to be formed by sludge accumulation body, it is characterised in that：The side
Method includes the following steps：
(1) 1L ordinary activated sludge gravity concentrations are taken；
(2) cationic high molecular polymer not soluble in water is added in the ordinary activated sludge after step (1) concentration；
(3) after stirring evenly, glacial acetic acid is added, continues to stir, obtains mixed liquor；
(4) lye is added in the mixed liquor after step (3), adjusts mixed liquor pH value to alkalinity, precipitation obtains sludge accumulation body；
(5) it will collect and be seeded in SBR after the sludge accumulation body tap water cleaning and dipping of step (4) formation, then press in
Water, reaction, precipitation, water outlet and idle mode are run；
(6) SBR is run 3-10 days.
2. a kind of side for promoting aerobic particle mud quickly to be formed by the preparation of sludge accumulation body according to claim 1
Method, it is characterised in that：In the step (1), a concentration of 2-20g/L of ordinary activated sludge after concentration.
3. a kind of side for promoting aerobic particle mud quickly to be formed by the preparation of sludge accumulation body according to claim 1
Method, it is characterised in that：In the step (2), the cationic high molecular polymer not soluble in water is chitosan, is added
Amount is calculated as 2%-50% with dewatered sludge quality.
4. a kind of side for promoting aerobic particle mud quickly to be formed by the preparation of sludge accumulation body according to claim 1
Method, it is characterised in that：In the step (3), using mechanical agitation, mixing speed 100-1000rpm, the glacial acetic acid of addition
Amount makes mixed liquor acetic acid concentration be 0.2%-5%, continues to stir 1-2min.
5. a kind of side for promoting aerobic particle mud quickly to be formed by the preparation of sludge accumulation body according to claim 1
Method, it is characterised in that：In the step (4), it is 7.5-11 to add lye and adjust pH of mixed.
6. a kind of side for promoting aerobic particle mud quickly to be formed by the preparation of sludge accumulation body according to claim 1
Method, it is characterised in that：In the step (5), sludge accumulation body is cleaned 2-3 times with tap water, and each soaking time is 0.5-
2.5h；The average grain diameter of the sludge accumulation body of collection is 0.5-2.5mm, the sludge volume index SVI of 5min5For 60-90mL/g,
The sludge volume index SVI of 30min30For 60-90mL/g.
7. a kind of side for promoting aerobic particle mud quickly to be formed by the preparation of sludge accumulation body according to claim 1
Method, it is characterised in that：In the step (6), aerobic particle mud structure is closely knit after operation 3-10 days, and sludge average grain diameter is
0.5-2.0mm, SVI5For 40-70mL/g, SVI30For 40-70mL/g, aerobic particle mud accounts for 75% or more in reactor.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109095601A (en) * | 2018-10-25 | 2018-12-28 | 江西理工大学 | Aerobic granular sludge reactor operation stability based on size controlling maintains method |
| CN114853155A (en) * | 2022-03-16 | 2022-08-05 | 西南科技大学 | Method for rapidly culturing aerobic granular sludge |
| CN115215432A (en) * | 2022-07-09 | 2022-10-21 | 同济大学 | Granular sludge suitable for town sewage treatment and rapid generation method thereof |
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| CN115215432A (en) * | 2022-07-09 | 2022-10-21 | 同济大学 | Granular sludge suitable for town sewage treatment and rapid generation method thereof |
| CN115215432B (en) * | 2022-07-09 | 2023-07-21 | 同济大学 | Granular sludge suitable for town sewage treatment and rapid generation method thereof |
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