CN110482835A - A method of quickly preparing aerobic particle mud - Google Patents
A method of quickly preparing aerobic particle mud Download PDFInfo
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- CN110482835A CN110482835A CN201910768962.4A CN201910768962A CN110482835A CN 110482835 A CN110482835 A CN 110482835A CN 201910768962 A CN201910768962 A CN 201910768962A CN 110482835 A CN110482835 A CN 110482835A
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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
- C02F11/00—Treatment of sludge; Devices therefor
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/15—Treatment of sludge; Devices therefor by de-watering, drying or thickening by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
Abstract
The invention discloses a kind of methods for quickly preparing aerobic particle mud, and this method includes following operating procedure: (1) extracting the sludge having compared with high bioactivity；(2) sludge is subjected to ultrasonic pretreatment；(3) flocculant is added in sludge, additional amount is 1.5 ‰~the 3 ‰ of the solid amount of substance of sludge；(4) lignocellulosic is added in sludge, additional amount is the 5%~15% of the solid amount of substance of sludge；(5) Microbial exopolysaccharides are added in sludge, additive amount is 1.5 ‰~the 3 ‰ of the solid amount of substance of sludge；(6) sludge is made to aerobic particle mud after centrifugal dehydration, granulation.Nuclear matter in the aerobic particle mud investment aeration tank that the present invention is obtained as inoculation granule sludge, cultivation cycle is short and system stabilization, can quickly utilize and engineering practice.Compared to traditional active sludge, settling property is good, the sedimentation time is short, while added chemical agent will not influence the activity of microorganism in sludge, improves the efficiency of waste water treatment system.
Description
Technical field
It is specifically a kind of quickly to prepare aerobic grain dirt applied to wastewater treatment the invention belongs to water-treatment technology field
The method of mud.
Background technique
With the high speed development of economy and society, the quickening of industrialization and urbanization schedule speed is put aside in natural water
A large amount of poisonous and harmful substances, freshwater resources for the survival of mankind are seriously polluted.Thus caused a series of urgently to be resolved
Water ecological environment problem.Wherein water eutrophication problem, which becomes, seriously threatens aquatic animals and plants, human health and work, agricultural
The main water environmental problems of development, and the main reason for causing water eutrophication is the excess emissions of nitrogen in sanitary sewage, phosphorus.
There are problems for the method for treating water of the prior art, largely show certain limitation, such as process flow
Longer, complex disposal process, take up a large area, treatment effeciency it is low, operation cost height etc..For most in current sewage treatment plant
Nitrogen/Phosphorus Removal is poor simultaneously for biological treatment, and aerobic particle mud method has because the characteristics of its economical and efficient is considered as one
The saprobia further treatment technique of prospect.Aerobic particle mud is the group being made of microorganisms mutually assemble, several species
A kind of body, it is considered to be special special biomembrane of self-retainingization.Aerobic particle mud makes it than the characteristic of great, biological densification
With quick sinking speed, is conducive to mud-water separation, reduces or save sludge secondary settling tank, simplification of flowsheet, reducing dirt
The occupied area and cost of investment of water treatment system.Moreover, the higher sludge concentration of aerobic particle mud and volumetric loading can be with
Variation water quality and the impact of high organic loading bring are born, guarantees good effluent quality.In addition, aerobic particle mud sludge
Grain structure makes O2By resistance to mass tranfer in transmission process, ecto-entad is divided into aerobic layer, anoxic layer and anaerobic layer,
Suitable living space is provided for different microorganisms, this unique layered structure makes it have higher bio-diversity, tool
The potential of standby degrade simultaneously Organic carbon and nitrogen and phosphorus.
Since nineteen ninety-two, have tens of papers report using ultrasonic effect can be improved sludge dehydration efficiency and
Biological treatment effect.Ultrasound pretreatment destroys the good water-retaining property of zoogloea and intracellular combination water, while keeping biggish
Mud granule, so that sludge settling property increases.The sludge being destroyed can be used as endogenous carbon, save even substitution external carbon
The formation of aerobic particle mud nutrition channel is accelerated in source.
It is dirty that Mishima and Nakamura in 1991 obtains aerobic grain in continuous-flow aerobic sludge organism reactor for the first time
Mud.Morgenroth turns out aerobic particle mud using sbr reactor device equal to first time in 1997, by gradually shortening waterpower
Residence time and increase rate of water exchange, and the extremely short sedimentation time (0-1min) is used, time-consuming 70d successfully realizes aerobic sludge granular
Change.Illustrate that aerobic particle mud forms overlong time, it is most of practice have shown that stable aerobic particle mud formed need 60~
90 days, it is difficult to reach starting requirement when practical engineering application.
Liu et al. confirms that the aluminium polychloride for adding 500mg/L can accelerate the forming process of aerobic particle mud (by 17 days
Shorten to 7 days), the average grain diameter of aerobic particle mud is 3.2mm, does not add the particle formed in the reactor of aluminium polychloride
Smaller (2.7mm).Moreover, aluminium polychloride can significantly improve the settleability of aerobic particle mud, compactibility, mechanical strength and
EPS secretory volume.But aluminium polychloride is added to COD and NH4+The influence of-N treatment effect is smaller.Although illustrating to add high score
Sub- polymer accelerates the incubation time of aerobic particle mud, but does not have significant change for wastewater treatment efficiency, increases
Engineering cost.
Wan etc. improves the mechanism of aerobic particle mud forming process: Duo Zhongjing from calcium precipitate as the angle of particle kernel
Body forms inorganic kernel under alkaline environment and adheres to for microorganism, and subsequent these microorganism secretions PS gradually forms aerobic grain dirt
The frame of mud.Wherein, the function bacterium being attached on kernel mainly has Sphingomonas sp., Paracoccus
Sp.Sinorhizobium americanum strain and Flavobacterium sp., these thallus can promote extracellular circulation
The synthesis of double guanylate cyclases then accelerates the formation and maturation of aerobic particle mud.By changing aerobic particle mud group
Part realizes the forming process for accelerating aerobic particle mud, but the process is more complicated it is difficult to realize in practical applications.
Due to aerobic particle mud starting the time it is unstable, limit aerobic particle mud application and optimization bottleneck it
One.The limitation of certain factors, its not worldwide large-scale application of aerobic particle mud.For this problem, exploitation
Fresh aerobic dewatered sludge is subjected to the seed sludge of marumerizer to promote aerobic sludge granulation, further promotes aerobic
The formation of grain sludge, to be conducive to the optimization of aerobic particle mud condition of culture.
Summary of the invention
It is quickly granulated technical problem to be solved by the invention is to provide a kind of, it is quick that cultivation cycle is short and system is stable
The method for preparing aerobic particle mud.
The present invention solves above-mentioned technical problem with following technical solution:
A kind of method quickly preparing aerobic particle mud of the invention, including following operating procedure:
(1) sludge having compared with high bioactivity is extracted；
(2) sludge of step (1) is subjected to ultrasonic pretreatment；
(3) flocculant is added in the sludge of step (2), stirring mixes them thoroughly, and the additional amount of flocculant is sludge
The 1.5 ‰ -3 ‰ of solid amount of substance；
(4) lignocellulosic is added in the sludge of step (3), stirring mixes them thoroughly, the addition of lignocellulosic
Amount is the 5%-15% of the solid amount of substance of sludge；
(5) Microbial exopolysaccharides are added in the sludge of step (4), stirring mixes them thoroughly, more outside extracellular microbial
The additive amount of sugar is the 1.5 ‰ -3 ‰ of the solid amount of substance of sludge；
(6) sludge of step (5) is made to aerobic particle mud after centrifugal dehydration, granulation.
Sludge described in step (1) is secondary settling tank sludge, excess sludge or sugaring food industry sludge, and is removed by weeding out
Filamentous and large particulate matter, MLVSS/MLSS is in 0.75-0.8 in sludge.
Ultrasonic pretreatment described in step (2), the ultrasonic power used is 20-25Hz, pretreatment time 30-
50s。
Flocculant described in step (3) is one or more of bodied ferric sulfate, aluminium polychloride, polyacrylamide.
Lignocellulosic described in step (4) is Bagasse-cellulose, in stalk cellulose, lignose, bamboo cellulose
One or more, and cellulose by drying, be crushed to partial size in 0.425mm-0.5mm.
Microbial exopolysaccharides described in step (5) are one of gellan gum, welan gum and xanthan gum.
The revolving speed that centrifugal dehydration treatment described in step (6) uses is 3000-4000r/min, time 15-25min, warp
The moisture content of sludge is in 75%-80% after dehydration.
Granulation described in step (6) processing be to be realized by Squeezinggranulator, by dewatered sludge by aperture be 1.5mm-
It is squeezed out in the sieve plate of 3mm, after being cut into cylindrical particle, then the rotating granulation through 5-15min is to get dirty to spherical aerobic grain
Mud.
The method of the present invention, which is combined by using physical method with chemical method, makes granular sludge, with prior art phase
Than having the following beneficial effects:
(1) present invention chooses the sludge having compared with high bioactivity after being sieved, to guarantee micro organism quantity in sludge
With the diversity of type；Sludge destroys sludge zoogloea after ultrasonic pretreatment, and sludge is made to have better polymerism and sink
Performance drops；
(2) the method for the present invention is by being suitably incorporated smashed lignocellulosic, such as bagasse, sawdust, stalk and bamboo fibre
Deng, since cellulose is bio-degradable ingredient, the air vent channel after degrading in granule sludge is made to be conducive to the entrance of oxygen, with
It improves sludge interior porosity and improves oxygen mass transfer efficiency, improve sludge activity, accelerate the formation of aerobic particle mud.
(3) the method for the present invention is by being suitably added chemical floc, such as bodied ferric sulfate, aluminium polychloride and cation
Type, anionic or non-ionic polyacrylamide make to be formed by sludge compared to traditional active sludge with good
Settling property saves the sedimentation time, meanwhile, the addition of chemical agent is not only without the bioactivity of influence activated sludge, also
Improve the efficiency of waste water treatment system.
(4) the method for the present invention is suitably added Microbial exopolysaccharides, and such as gellan gum, welan gum and xanthan gum, can be used as can
Degradation biological adhesive, activated sludge is bonded it is agglomerating, and can be used as microbiological culture media absorption microorganism largely secrete it is extracellular
Polymer quickly forms aerobic particle mud zoogloea.
(5) sludge of dehydration is processed into spherical aerobic particle mud through being granulated by the method for the present invention, passes through physics
It is granulated granule sludge its stress formed more evenly, and bigger surface tension can be born, can be born in aeration tank stronger
High pressure water flushing, aeration wash away, between sludge collision cutting etc..
Specific embodiment
Technical solution of the present invention is further illustrated combined with specific embodiments below, but is not restricted to following embodiment.
Embodiment 1
(1) activated sludge dehydration: extracting 20g secondary sedimentation tank of sewage treatment work sludge, removes Filamentous and large particle by weeding out,
MLVSS/MLSS=0.8 in sludge；Through ultrasonic power 20kHz, ultrasound 50s ultrasonic pretreatment after, be added sludge it is solid
The anion-polyacrylamide of amount of substance 3 ‰, stirring make sludge sufficiently flocculate；Add the sugarcane of the solid amount of substance 10% of sludge
Slag cellulose, bagasse cellulose early period in 105 DEG C of drying 4h, by comminution pretreatment to partial size in 0.425mm-0.5mm, then lead to
Crossing stirring is sufficiently mixed cellulose with sludge；The gellan gum of the solid amount of substance 2 ‰ of sludge is added, stirring makes the abundant glue of sludge
It is glutinous；Then centrifugal dehydration 20min is used as and tests sludge used, moisture percentage in sewage sludge 80% at revolving speed 3500r/min.
(2) marumerizer: using pelletizer, in the sieve plate for being 1.5mm from aperture by the sludge after step (1) dehydration
It squeezes out, then obtained cylindric sludge is placed in roller after the rotating granulation of 5min, producing partial size is the aerobic of 1.5mm
Granule sludge.
Show through application: to be dehydrated the physical particles sludge for being granulated and being formed as seed sludge, hence it is evident that improve aerobic sludge
Granulate speed.In 25d, the sludge partial size for being inoculated in physics granule sludge 90% or more is greater than 0.2mm, during culture
COD, ammonia nitrogen removal frank are all larger than 90%, and the removal rate of late stage of culture TN is about 70%.
Embodiment 2
(1) activated sludge dehydration: the industrial sludge 20g generated in sugar industry wastewater treatment process is extracted, by weeding out
MLVSS/MLSS=0.78 except Filamentous and large particle, in sludge；Ultrasound through ultrasonic power 23kHz, ultrasonic time 40s
After wave pretreatment, the aluminium polychloride of the solid amount of substance 2 ‰ of sludge is added, stirring makes sludge sufficiently flocculate；It is dry to add sludge
Gu the stalk cellulose of amount of substance 15%, stalk cellulose 105 DEG C of drying 4h early period, exist by comminution pretreatment to partial size
0.425mm-0.5mm, stirring are sufficiently mixed cellulose with sludge；The welan gum of the solid amount of substance 3 ‰ of sludge is added, is stirred
Make the abundant gluing of sludge；Then centrifugal dehydration 15min is used as and tests sludge used, moisture percentage in sewage sludge at revolving speed 4000r/min
It is 78%.
(2) marumerizer: using pelletizer, squeezes in the sieve plate for being 2mm from aperture by the sludge after step (1) dehydration
Out, then by obtained cylindric mud granule it is placed in roller after the rotating granulation of 10min, producing partial size is the good of 2mm
Oxygen granule sludge.
Show through application: to be dehydrated the physical particles sludge for being granulated and being formed as seed sludge, hence it is evident that improve aerobic sludge
Granulate speed.In 20d, the sludge partial size for being inoculated in physics granule sludge 90% or more is greater than 0.2mm, during culture
COD, ammonia nitrogen removal frank are all larger than 90%, and the removal rate of late stage of culture TN is about 70%.
Embodiment 3
(1) activated sludge dehydration: extracting 20g sewage treatment plant excess sludge, removes Filamentous and large particle by weeding out, dirty
MLVSS/MLSS=0.75 in mud；Through ultrasonic power 25kHz, ultrasonic time 30s ultrasonic pretreatment after, be added sludge
The bodied ferric sulfate of solid amount of substance 1.5 ‰, stirring make sludge sufficiently flocculate；The bamboo for adding the solid amount of substance 5% of sludge is fine
Dimension element, bamboo cellulose early period, by comminution pretreatment to partial size in 0.425mm-0.5mm, stirring made fiber through 105 DEG C of drying 4h
Element is sufficiently mixed with sludge；The xanthan gum of the solid amount of substance 1.5 ‰ of sludge is added, stirring makes the abundant gluing of sludge；Then exist
Centrifugal dehydration 25min is as test sludge used, moisture percentage in sewage sludge 75% under 3000r/min.
(2) marumerizer: using pelletizer, squeezes in the sieve plate for being 3mm from aperture by the sludge after step (1) dehydration
Out, then by obtained cylindric mud granule it is placed in roller after the rotating granulation of 15min, producing partial size is the good of 3mm
Oxygen granule sludge.
Show through application: to be dehydrated the physical particles sludge for being granulated and being formed as seed sludge, hence it is evident that improve aerobic sludge
Granulate speed.In 16d, the sludge partial size for being inoculated in physics granule sludge 90% or more is greater than 0.2mm, during culture
COD, ammonia nitrogen removal frank are all larger than 90%, and the removal rate of late stage of culture TN is about 70%.
Claims (8)
1. a kind of method for quickly preparing aerobic particle mud, which is characterized in that including following operating procedure:
(1) sludge having compared with high bioactivity is extracted；
(2) sludge of step (1) is subjected to ultrasonic pretreatment；
(3) flocculant is added in the sludge of step (2), stirring mixes them thoroughly, and the additional amount of flocculant is that sludge is solid
The 1.5 ‰ -3 ‰ of amount of substance；
(4) lignocellulosic is added in the sludge of step (3), stirring mixes them thoroughly, and the additional amount of lignocellulosic is
The 5%-15% of the solid amount of substance of sludge；
(5) Microbial exopolysaccharides are added in the sludge of step (4), stirring mixes them thoroughly, Microbial exopolysaccharides
Additive amount is the 1.5 ‰ -3 ‰ of the solid amount of substance of sludge；
(6) sludge of step (5) is made to aerobic particle mud after centrifugal dehydration, granulation.
2. quickly preparing the method for aerobic particle mud according to claim 1, which is characterized in that dirt described in step (1)
Mud is secondary settling tank sludge, excess sludge or sugaring food industry sludge, and removes Filamentous and large particulate matter by weeding out, in sludge
MLVSS/MLSS is in 0.75-0.8.
3. according to claim 1 with 2 it is described quickly prepare aerobic particle mud methods, which is characterized in that described in step (2)
Ultrasonic pretreatment, the ultrasonic power used is 20-25Hz, pretreatment time 30-50s.
4. according to claim 1 with 2 it is described quickly prepare aerobic particle mud methods, which is characterized in that described in step (3)
Flocculant is one or more of bodied ferric sulfate, aluminium polychloride, polyacrylamide.
5. according to claim 1 with 2 it is described quickly prepare aerobic particle mud methods, which is characterized in that described in step (4)
Lignocellulosic is one or more of Bagasse-cellulose, stalk cellulose, lignose, bamboo cellulose, and cellulose
By drying, being crushed to partial size in 0.425mm-0.5mm.
6. according to claim 1 with 2 it is described quickly prepare aerobic particle mud methods, which is characterized in that described in step (5)
Microbial exopolysaccharides are one of gellan gum, welan gum and xanthan gum.
7. according to claim 1 with 2 it is described quickly prepare aerobic particle mud methods, which is characterized in that described in step (6)
The revolving speed that centrifugal dehydration treatment uses is 3000-4000r/min, and time 15-25min, sludge is aqueous after dehydration
Rate is in 75%-80%.
8. according to claim 1 with 2 it is described quickly prepare aerobic particle mud methods, which is characterized in that described in step (6)
Granulation processing is realized by Squeezinggranulator, and dewatered sludge is cut by aperture to squeeze out in the sieve plate of 1.5mm-3mm
After cylindrical particle, then the rotating granulation through 5-15min to get arrive spherical aerobic particle mud.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111410469A (en) * | 2020-05-14 | 2020-07-14 | 广东华泱技术有限公司 | Application of river channel solid waste in environment-friendly baking-free solid bricks and preparation method |
| CN113428975A (en) * | 2021-07-12 | 2021-09-24 | 深圳市润科环保应用技术研究有限公司 | Process for rapidly culturing aerobic granular sludge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111410469A (en) * | 2020-05-14 | 2020-07-14 | 广东华泱技术有限公司 | Application of river channel solid waste in environment-friendly baking-free solid bricks and preparation method |
| CN113428975A (en) * | 2021-07-12 | 2021-09-24 | 深圳市润科环保应用技术研究有限公司 | Process for rapidly culturing aerobic granular sludge |
| CN113428975B (en) * | 2021-07-12 | 2023-02-03 | 深圳市润科环保应用技术研究有限公司 | Process for quickly culturing aerobic granular sludge |
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