CN105858883B - A kind of low concentration anaerobic reactor quick start method - Google Patents
A kind of low concentration anaerobic reactor quick start method Download PDFInfo
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- CN105858883B CN105858883B CN201610394147.2A CN201610394147A CN105858883B CN 105858883 B CN105858883 B CN 105858883B CN 201610394147 A CN201610394147 A CN 201610394147A CN 105858883 B CN105858883 B CN 105858883B
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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
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Abstract
The invention discloses a kind of low concentration anaerobic reactor quick start methods, the mode that Powdered Activated Carbon natural membrane is added under the conditions of 24 DEG C carries out the starting of folded plate anaerobic reactor device, biofilm speed is fast, anaerobic organism film is to the strong environmental adaptability in reactor, it is not easily to fall off when condition of water quality changes, there is stronger anti-load impact ability.
Description
Technical field
The present invention relates to water treatment fields, and in particular to a kind of low concentration anaerobic reactor quick start method.
Background technique
Anaerobic reactor starting refers under certain conditions, is proliferated anaerobe, is formed by various microbial species
The sludge body of cluster knot, reaches stable degradation efficiency.The starting of reactor is the premise of stable operation, can be divided into from inoculation and open
Dynamic, granule sludge starting and other sludge seedings start three kinds of modes.Anaerobic reactor is needed in the starting period when temperature is 30 DEG C
Want 60d；80d is needed when temperature is 20 DEG C.Since anaerobic bacteria proliferation is slower, and most anaerobes are coccus and bar
Bacterium is not easy apposition growth, and easily with water outlet outflow reactor, if creating the condition for being conducive to der Pilz growth, der Pilz can be fast
Fast-growing is long and attachment forms netted mechanism, provides habitat for the growth of other microorganisms.
In previous anaerobic reaction device start-up course, there are many used Starting mode.What is how used by force is aerobic
The mode of pre- biofilm increases power-equipment to accelerate anaerobic reactor to start.Or it is inoculated with using aerobic activated sludge
Biofilm, this biofilm mode is to the starting of reactor also than very fast.But impact resistance is small during starting and is connect
Kind biomembrane, there are one kind of a process is changed, is easy to fall off in reaction unit when condition of water quality varies slightly biomembrane.
Summary of the invention
To solve the above problems, the present invention provides a kind of low concentration anaerobic reactor quick start methods, using 24
The mode that Powdered Activated Carbon natural membrane is added under the conditions of DEG C carries out the starting of folded plate anaerobic reactor device, biofilm speed degree
Fastly, anaerobic organism film is not easily to fall off when condition of water quality changes to the strong environmental adaptability in reactor, has relatively strong
Anti- load impact ability.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of low concentration anaerobic reactor quick start method adds Powdered Activated Carbon natural membrane under the conditions of 24 DEG C
Mode carries out the starting of folded plate anaerobic reactor device, specific steps are as follows:
S1, the initial stage in reactor start-up are inoculated with anaerobic sludge, and add Powdered Activated Carbon to anaerobic reactor volume
Half position starts to start after mixing quiet heavy 2d, and inlet COD concentration 1000-1500mg/L is adjusted with natrium carbonicum calcinatum
Water inlet pH value makes to control between 7.5-8.5 into water pH value, and inorganic salts nutritional ingredient is added, and natural membrane 1 week；
S2, within the starting period, the running temperature of reactor is controlled at 24 DEG C, just when starting, keeps higher influent COD dense
Degree and volumetric loading, then, by hydraulic loading gradually from initial 2.26m3/(m3D) it is increased to 5.30m3/(m3D), and
By corresponding hydraulic detention time be for 24 hours, 20h, 16h, 12h；Start to start initial 7d, does not put activated-carbon device COD removal rate
It is below 50%, the COD removal rate for placing activated-carbon device is 53.23%.This shows the initial stage in starting, and active carbon is strengthened
It is more significant that device starts effect.
S3, after operation 2 weeks, volatile organic acids content in reaction unit, waterpower are controlled by adjusting hydraulic detention time
Reactor at least ran 6d and COD removal rate by every HRT and stablized 55% with top from 12h, 10h, 8h, 6h residence time
Adjustable principle carries out the starting operation of reactor, and the purpose using this Starting mode is in order in domestication seed sludge
It is unlikely to the microbial biomass to fall sharply in reactor in the process, and enhances its anti-load impact ability, during natural membrane, protects
It holds temperature of reactor and is in 24 ± 2.0 DEG C；
S4, operation 1 week after, outlet seed sludge mixed liquor 3L is poured into each lattice of reactor by each cell compartment top respectively
Room；Anaerobic sludge sinks under the effect of gravity, is obstructed in sinking watching by Powdered Activated Carbon, and black dirt wadding body is in cell compartment space
Inside overwork active carbon；Then intake with normal discharge.
S5, COD concentration is gradually decreased to the sewage treatment concentration needed, change COD concentration every time and run 5 day time.It grinds
Study carefully discovery, place activated-carbon device COD removal rate and improve fast speed, hereafter in HRT adjustment process, anaerobic device it is organic
Removal ability is kept at higher level.Comparative analysis the result shows that, partial size is added and is greater than 83 μm and less than 20 μm of active carbons
Device COD removal rate decrease speed is very fast, significant when being down to 4h especially with HRT.And it is detesting for 20~83 μm of active carbons that partial size, which is added,
Oxygen device COD average removal rate can still maintain 64% or more.
The invention has the following advantages:
Low concentration anaerobic reactor device is carried out by the way of adding Powdered Activated Carbon natural membrane under the conditions of 24 DEG C
Starting, biofilm speed degree is fast, and anaerobic organism film is to the strong environmental adaptability in reactor, when condition of water quality changes
It is not easily to fall off, there is stronger anti-load impact ability.
Specific embodiment
In order to which objects and advantages of the present invention are more clearly understood, the present invention is carried out with reference to embodiments further
It is described in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
The embodiment of the invention provides a kind of low concentration anaerobic reactor quick start methods, add powder under the conditions of 24 DEG C
The mode of last active carbon natural membrane carries out the starting of folded plate anaerobic reactor device,
Specifically, including the following steps:
1) for processing low-concentration organic waste water the characteristics of, within the starting period, the running temperature of reactor is controlled at 24 DEG C,
To improve sludge concentration in reactor as early as possible, guarantee that the starting success of reactor keeps higher influent COD dense just when starting
Degree and volumetric loading, COD removal rate to be achieved are stable and then negative using the method raising volume for gradually increasing hydraulic loading
Lotus.Hydraulic loading is from initial 2.26m3/m3D is increased to 5.30m3/(m3D), i.e., corresponding hydraulic detention time subtracts from for 24 hours
12h is arrived less.
2) it at the initial stage of reaction unit starting, initially sets up: adding Powdered Activated Carbon to two points of anaerobic reactor volume
One of position.Inlet COD concentration is about 1000-1500mg/L, adjusts water inlet pH value with natrium carbonicum calcinatum, makes to control into water pH value
Between 7.5-8.5, hydraulic detention time HRT is for 24 hours, and calcium chloride, ferric trichloride, magnesium sulfate, potassium dihydrogen phosphate to be added etc.
Inorganic salts nutritional ingredient, in order to promote methane backeria growth and improve this test of sludge activity in sludge acclimatization also suitably
Add the salt of the microelements such as calcic, magnesium, iron, cobalt, nickel.
3) pass through 15 days time, overworked anaerobism der Pilz on observation discovery Powdered Activated Carbon, be creamy white.Due to
Anaerobe is hardly produced, and HRT answers long enough, in the case where water inlet pH value COD concentration is certain, controls in reaction unit
The main means of pH value are to adjust HRT.VFA content in reaction unit is controlled by adjusting HRT, is provided for microbial growth
Good living environment.In seeded process, keeps temperature of reactor to be within the scope of 24 ± 2.0 DEG C, make the proliferation of microorganism
In optimal ambient condition.
4) to increase anaerobic sludge concentration, after shelving six days, above-mentioned seed sludge mixed liquor 3L is taken, respectively by each cell compartment
Each cell compartment of reactor is poured into portion.Anaerobic sludge sinks under the effect of gravity, is obstructed in sinking watching by Powdered Activated Carbon, black
Sludge wadding body overworks filler in cell compartment space.Then with the water inlet of 220mL/min flow, i.e. HRT24h.After three days, anaerobic reaction
Sludge starts to whiten on Powdered Activated Carbon in device, and partial exfoliation sludge is arranged at bottom, is in black.Hereafter, powder in anaerobic reactor
Hung biological floe is gradually transformed into milky acidification bacterium from top to bottom on active carbon, and this trend obviously weakens, reactor bottom
There is one layer of black floc sludge to have fallen off in portion, out clarification of water.
5) after three days, anaerobic reactor influent COD 1000-1500mg/L or so is kept, hydraulic detention time controls respectively
For 24 hours, 20h, 16h, 12h.It is run 7 days under each hydraulic detention time.The process of Primary culture anaerobic organism film is also anaerobism
The domestication process of microorganism.The wherein growth and breeding of der Pilz and the quick fixation on Powdered Activated Carbon, conducive to anaerobic bacteria
Apposition growth.According to evolutional viewpoint, in long-term evolutionary process, the survival of the fittest, discomfort person eliminate biology.Filamentous micro- life
Object has a large specific surface area, and one end is fixed, nutrition and aerobic requires that low, metabolic rate is fast, rete malpighii can reduce flow resistance
The features such as, very adaptation current water the characteristics of, therefore in water treatment building, Powdered Activated Carbon can not only become well
The carrier of anaerobe, and by the adsorption capacity of its huge surface area can organic matter effectively in absorption effluent, thus
The catharsis of sewage is cooperatively completed with the microorganism of later attachment thereon.Therefore Powdered Activated Carbon is in biofilm structure shape
At with improve low concentration wastewater treatment effeciency in terms of effect be highly important.
6) it is the demand for adapting to starting low concentration anaerobic reactor, COD concentration can be gradually decreased to the sewage treatment needed
Concentration, each transition time suggestion are operation five days.
The initial stage of reaction unit starting, microorganism are most difficult to generate, and natural membrane is also most difficult to, and applicant thinks that HRT should foot
It is enough long.For this purpose, initially HRT is for 24 hours, inlet COD concentration is about 1200mg/L, adjusts water inlet with sodium hydroxide and natrium carbonicum calcinatum
PH value makes into water pH value between 7.5-8.5.By or so two weeks, cotton-shaped acidification bacterium has been overworked on Powdered Activated Carbon, has been in
Milky.The pH value of anaerobic reactor is 5.2-5.9 after measured.Along reaction unit water (flow) direction, biomembrane is thinner in the backward, detests
Each room only sporadicly hangs with some acidification bacterium to oxygen reactor backward, obtain after measured from the 5th Room backward pH value below 4.8.Through
Comparative analysis, applicant think that pH value has been unfavorable for Powdered Activated Carbon biofilm below 4.8.
During natural membrane, when water inlet pH value, in the case that COD concentration is certain, folded plate anaerobic reaction device is controlled
The main means of interior pH value are to adjust HRT.VFA content in efficient folded plate anaerobic reaction device is controlled by adjusting HRT, is micro- life
Object growth and breeding provides good living environment.For the optimal HRT for finding out each stage during natural membrane, applicant is to every room
PH value and the pH value of water outlet be measured.Initial HRT is 12h, and water outlet pH value has dropped 1.7 or so；The operation of natural membrane film
At 15 days, the pH value of rear five Room is measured all below 4.8；The pH value known to upper piecewise analysis is not microorganism growth below 4.8
Optimal pH range, so HRT is adjusted to 8h by applicant.It is run one week under the conditions of HRT is 8h, folded plate anaerobic reaction device
HRT is then adjusted to 8h 5.5 or more by pH value, and measuring water outlet pH value is 5.2 or so, and pH environment is relatively suitble to microorganism raw
It is long.It is run one week under the conditions of HRT is 8h, the anaerobic organism film of reaction unit front end has almost been filled with Powdered Activated Carbon
Gap is in grey black, and rear end has hung up anaerobic organism film, but very thin.At this point, folded plate anaerobism lab scale reaction unit top
Powdered Activated Carbon on biofilm biomass it is obviously more than bottom.This is because the reoxygenation on top, so that aerobic, facultative bacteria is able to
Growth, aerobic, facultative bacteria growth and breeding is faster than the anaerobic bacteria of bottom, so the biological film thickness on Powdered Activated Carbon top.
About using 1 month, Powdered Activated Carbon top finds a large amount of protozoan, and protozoan is based on paramecium.Reaction unit
Front end, middle-end protozoan quantity are obviously more than rear end.Bacterium is based on bacillus.1 month is spent again, is found a large amount of rear lively
Object, metazoa is based on the earthworm that quivers, nematode, wheel animalcule.The reaction unit front end room 1-3, protozoan is in the majority, and metazoa is compared
It is few；The room 4-5 is in the majority with metazoa, backward along journey, nematode and quivers that earthworm is more, and paramecium and wheel animalcule are fewer, close at water outlet
Only discovery nematode and the earthworm that quivers.The appearance of a large amount of protozoans and metazoa shows the biomembrane of folded plate anaerobic reaction device
Maturation is cultivated.Powdered Activated Carbon lower part does not find protozoan and metazoa, based on milky acidification bacterium.This
When, it can be considered that folded plate anaerobic reactor device starts successfully.
It to find out that pilot scale under the same terms, lab scale anaerobic device run the difference of effect, and is corrected, so that this research
The conclusion that dynamic contrast analyzes different-grain diameter active carbon reinforced anaerobic device effect is more accurate, introduces and active carbon is not added early period
Under the conditions of test result.The result shows that active carbon is not added, other conditions are identical, and anaerobic device continuously starts operation 88d,
Respective HRT is stable at 8h.The biofilm success of each compartment of anaerobic device, therefore can be considered and start successfully.Analysis can by contrast
Know, under the conditions of different HRT, respectively there are significant differences for corresponding COD removal rate for stream oriented device, add the anaerobism dress of active carbon
It sets the sludge character variation occurred after starting 50d and shows that anaerobe group and structure more tend to rationally in system.
As seen from the experiment, when stablizing HRT8h continuous operation 17d, COD, TP removal rate and maximum of anaerobic device
More relatively stable than methane production rate, nothing significantly increases or reduces trend.And anaerobic device starts to compartment each when stable operation
Biomembrane is hung up, therefore active carbon anaerobic device continuous operation 50d, which is visually added, can start success.And active carbon is not added
Anaerobic device need to continuously start 78d and can start success, and organic removal ability is lower.It is by comparative analysis result it is found that living
Property charcoal to different setback plate anaerobic device start operation effect invigoration effect it is more significant.3 kinds of partial size active carbons are less than 8h in HRT
Follow-up operation the result shows that, strengthen different setback plate anaerobic device optimal efficacy flyash partial size be 20-83 μm.
Active carbon has the characteristics that porosity height, large specific surface area, than great, these physical characteristics are detested in shortening combined type
Oxygen reaction unit has played extremely important effect in the starting time.Previous research achievement and experience have shown that, any adsorbent
Physical absorption ability and its specific surface area, porosity correlation, therefore active carbon necessarily has stronger physical absorption
Ability.Initial start stage activated carbon surface becomes anaerobism as having adsorbed various nutriments required for a large amount of microorganism
The settlement of microorganism, and then form a large amount of zoogloeas.
The overlong time of anaerobic reactor starting operation.Under the conditions of accelerating reaction unit to handle low concentration sewage
Starting, can use seed sludge of a certain amount of Powdered Activated Carbon mixing anaerobic sludge as this reactor.Had based on Powdered Activated Carbon
Have large specific surface area, porosity it is high and than it is great the features such as, the application thinks can using these physical properties of Powdered Activated Carbon
Start anaerobic reaction device within a short period of time successfully and in efficient stable state.Tracing it to its cause has two:
1) large specific surface area and porosity height be formed by high physical absorption ability will in acceleration system zoogloea shape
At；
2) necessarily make to be formed by zoogloea with good settleability than great, to make in device start-up course efficiently
Stablize.
Based on above-mentioned viewpoint, this patent is designed to be used as after anaerobic sludge is mixed in a certain ratio uniformly with Powdered Activated Carbon and be connect
Kind sludge, to the quick start anaerobic reaction device under low consistency conditions.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (1)
1. a kind of low concentration anaerobic reactor quick start method, which is characterized in that add Powdered Activated Carbon under the conditions of 24 DEG C
The mode of natural membrane carries out the starting of folded plate anaerobic reactor, specific steps are as follows:
S1, the initial stage in reactor start-up are inoculated with anaerobic sludge, and add Powdered Activated Carbon to two points of anaerobic reactor volume
One of position, start to start after mixing quiet heavy 2d, inlet COD concentration 1000-1500mg/L, adjusted and intake with natrium carbonicum calcinatum
PH value makes to control between 7.5-8.5 into water pH value, and inorganic salts nutritional ingredient is added, and natural membrane 1 week；
S2, within the starting period, the running temperature of reactor is controlled at 24 DEG C, just when starting, keep higher inlet COD concentration and
Volumetric loading, then, hydraulic loading is gradually from initial 2.26m3/(m3D) it is increased to 5.30m3/(m3D), and it is corresponding
Hydraulic detention time be for 24 hours, 20h, 16h, 12h；
S3, after operation 2 weeks, volatile organic acids content in reactor is controlled by adjusting hydraulic detention time, when hydraulic retention
Between be 12h, 10h, 8h, 6h, reactor at least run 6d and COD removal rate stabilization by every HRT and can adjust 55% or more
Principle carry out the starting operation of reactor and keep temperature of reactor to be in 24 DEG C and during natural membrane；
S4, operation 1 week after, outlet seed sludge mixed liquor 3L is poured into each cell compartment of reactor by each cell compartment top respectively；Detest
Oxygen sludge sinks under the effect of gravity, is obstructed in sinking watching by Powdered Activated Carbon, and black dirt wadding body is hung in cell compartment space
Full active carbon；Then intake with normal discharge；
S5, COD concentration is gradually decreased to the sewage treatment concentration needed, change COD concentration every time and run 5 day time.
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| CN106565014A (en) * | 2016-11-01 | 2017-04-19 | 华南理工大学 | Anaerobic process domestication method for treating amino acid process condensing water |
| CN106976967A (en) * | 2017-04-10 | 2017-07-25 | 同济大学 | A kind of Novel anaerobic biofilter sponge artificial wet land sewage treating process |
| CN109534498B (en) * | 2018-12-29 | 2021-12-03 | 江苏索普化工股份有限公司 | Organic acid-containing SO4 for biochemical treatment2-Method for treating waste water |
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| CN102718314A (en) * | 2012-05-24 | 2012-10-10 | 北京工业大学 | Method for quick starting of anaerobic ammonium oxidation technology at room temperature in low matrix |
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