CN107475304A - A kind of method that rapid recovery anaerobic fermentation system organic acid suppresses - Google Patents
A kind of method that rapid recovery anaerobic fermentation system organic acid suppresses Download PDFInfo
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- CN107475304A CN107475304A CN201710833822.1A CN201710833822A CN107475304A CN 107475304 A CN107475304 A CN 107475304A CN 201710833822 A CN201710833822 A CN 201710833822A CN 107475304 A CN107475304 A CN 107475304A
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
- C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
- C12P5/023—Methane
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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
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention discloses a kind of method that rapid recovery anaerobic fermentation system organic acid suppresses, when causing anaerobic fermentation system organic acid largely to accumulate due to reasons such as load fluctuations, when methanogen is heavily suppressed, stopping charging and add charcoal can the suppression of rapid recovery organic acid；By the pH, volatile fatty acid (volatile fatty acid, VFA) and gas production comprehensive assessment anaerobic fermentation system recovery extent that monitor zymotic fluid；When pH, VFA and gas production are gradually recovered to be acidified preceding state, you can underload is fed, and gradually increases load restoration anaerobic fermentation system after fermentation system is stable.Advantages of the present invention is mainly reflected in：1. the fast quick-recovery of the anaerobic fermentation system seriously suppressed for a long time by organic acid can be realized；2. simple to operate, cost is cheap；3. take short, significant effect.
Description
Technical field
The invention belongs to fixed-end forces technical field, is related to the side that a kind of rapid recovery anaerobic fermentation system organic acid suppresses
Method.
Background technology
When handling city organic solid waste using anaerobic fermentation, because methane phase speed is less than hydrolysis acidification speed, work as processing
When load is too high, anaerobic fermentation system easily goes out VFA excess accumulations, causes system effectiveness and stability to decline, or even system collapses
Burst.When pH is less than 6.6, methanogen activity will be suppressed, and be difficult to recover in the short time, have a strong impact on that system is stable
Operation.Therefore, how rapid recovery anaerobic fermentation system organic acid, which suppresses stable operation for anaerobic fermentation system, seems ten
Divide important.
When acidification phenomenon occurs in anaerobic fermentation system, generally use chemical method, Physical or bioanalysis alleviate extensive
It is multiple.1. chemical method is by adding the cushioning liquid such as ammonium hydrogencarbonate, sodium acid carbonate to system, the pH of reactor is promoted to 7.0
More than, provide suitable pH for growth methanotrophic bacterial strain；Its shortcoming is that medicine consumption is big, and cost is high and needs long-term intermittent repeatedly to add；2. thing
Logos is by reducing feed loading, dilution hybrid system organic acid concentration etc., and then reduction reactor organic loading acceleration VFA
Degraded；Its shortcoming is that recovery time is longer, and engineer applied is limited；3. bioanalysis is the digested sludge for increasing activity by stream, promote
Enter VFA Degradation and Transformations；Its shortcoming is to add digested sludge cost height, and relatively difficult to achieve.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, it is an object of the invention to provide a kind of rapid recovery anaerobic fermentation system
The method that system organic acid suppresses, the acidifying that can effectively alleviate anaerobic fermentation system suppress, fast quick-recovery anaerobic fermentation system.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of method that rapid recovery anaerobic fermentation system organic acid suppresses, it is characterised in that：Due to originals such as load fluctuations
Because causing anaerobic fermentation system organic acid a large amount of accumulation occur, pH is down to less than 6.6, when methanogen is heavily suppressed, stopped
Only feed and by quantitatively adding in charcoal to anaerobic fermentation system, realize that rapid recovery organic acid suppresses, greatly shorten and detest
Aerobe fermentation system is acidified recovery time；Recovered by pH, VFA and gas production comprehensive assessment anaerobic fermentation system for monitoring zymotic fluid
Degree；When pH, VFA and gas production are gradually recovered to be acidified preceding state, you can underload is fed, and is gradually increased after fermentation system is stable
Application of load recovers anaerobic fermentation system.
Further, described anaerobic fermentation system can be high temperature (50-65 DEG C) fermentation system or medium temperature (20-
45 DEG C) fermentation system.
Further, in terms of the reactor volume of anaerobic fermentation system, the dosage of described charcoal is 2-15g/L.
Further, the preferred dosage of required charcoal is equal after described mesophilic digestion system and hot fermentation system are acidified
For 10g/L.
Further, described charcoal can voluntarily be prepared with solid waste.
Further, solid waste needed for the preparation of described charcoal can be wood chip, sawdust or excess sludge etc..
Further, the preparation method of described charcoal is that solid waste is placed in 500 DEG C of anaerobic environments, and control rises
Warm amplitude is 10-15 DEG C/min, and temperature maintains 2h, sieved after cooling, stored dry is standby after reaching 500 DEG C.
Further, the dosing method of described charcoal adds to be one or many.
The advantages of patent of the present invention, is mainly reflected in：1. the anaerobic fermentation seriously suppressed for a long time by organic acid can be realized
The fast quick-recovery of system；2. simple to operate, cost is cheap；3. take short, significant effect.
Compared to existing processing method, the present invention can be suppressed with rapid recovery anaerobic fermentation system organic acid, and it is extensive to shorten acidifying
The multiple time.Required charcoal can be prepared voluntarily, cheap and be readily available, and solve that while acidifying suppresses waste can be realized
Recycle, there is double benefit to economy and environment.
Brief description of the drawings
Gas production cumulative chart in Fig. 1 anaerobic fermentation systems acidifying recovery process.
VFA variation diagrams in Fig. 2 anaerobic fermentation systems acidifying recovery process.
Embodiment
To make the implementation of the present invention apparent understandable, with reference to instantiation, the present invention is made further
Illustrate.
The present invention is applied into the anaerobic fermentation system in acidifying, achieves good result, embodiment is as follows：Acidifying
The initial pH of anaerobic fermentation system for 6.14, VFA concentration more than 40g/L (COD concentration, similarly hereinafter), gas production belongs to close to zero
Severe acidification.Stop charging, by adding base reagent, anaerobic fermentation system still can not recover aerogenesis.Using the inventive method
Fast quick-recovery is carried out, while the parallel control group for being not added with charcoal is set, is comprised the following steps that.
(1) wood chip charcoal is prepared：Wood chip is put into crucible, and compacting reduces hole between wood chip, after capping, is lacked at 500 DEG C
Under the conditions of oxygen, using one section of heating schedule, increasing extent of temperature is controlled in 10-15 DEG C/min, and 2h is maintained after temperature reaches 500 DEG C,
Manufactured charcoal crosses 200 mesh sieves, is stored for future use under drying condition；
(2) sludge 50mL in acidified anaerobic fermentation system is taken respectively, is added in four 120mL serum bottles, is compiled
Number K1(blank), K2(blank control), C1(adding charcoal), C2(adding charcoal to compare), according to 10g/L concentration to C1And C2In add biology
Charcoal, two blank sample K for being not added with charcoal are made under the conditions of equal1, K2, after through N2Stripping 2min, exclude headspace oxygen
Gas, after gland sealing, 35 DEG C of shaking baths are placed in, shaking table frequency is 120~130r/min；
(3) gas production is quantitatively surveyed with glass syringe, gas is not when fermentation flask external and internal pressure is identical, in glass syringe
Rise again；Gas component is determined, contrast cumulative methane amount changes with time, as shown in Figure 1.
(4) after gas production was surveyed, immediately with syringe sampling, zymotic fluid pH is surveyed, in rotating speed 10000r/min conditions
Under, 10min is centrifuged, takes supernatant to dilute certain multiple, by gas-chromatography area external standard method, measures VFA concentration, such as Fig. 2
It is shown.
Addition charcoal is can be seen that from Fig. 1 and Fig. 2 to be significantly faster than that for VFA degradation speed and be not added with charcoal
Charcoal blank control group, method of the present invention is notable for the anaerobic fermentation system recovery effects of severe acidification, can be big
Amplitude shortens acidifying recovery time.
It is described above, it is only the preferred forms of the present invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, can readily occur in replacement or change, all should
Cover within the scope of the present invention.
Claims (8)
1. a kind of method that rapid recovery anaerobic fermentation system organic acid suppresses, it is characterised in that：When due to including load fluctuation
Anaerobic fermentation system organic acid is caused during the reason for interior a large amount of accumulation occur, pH is down to less than 6.6, and methanogen is seriously pressed down
When processed, stop charging and by quantitatively adding in charcoal to anaerobic fermentation system, realize that rapid recovery organic acid suppresses, shorten
Anaerobic fermentation system is acidified recovery time；It is extensive by pH, VFA and gas production comprehensive assessment anaerobic fermentation system for monitoring zymotic fluid
Multiple degree；When pH, VFA and gas production are gradually recovered to be acidified preceding state, you can underload is fed, after fermentation system is stable gradually
Increase load restoration anaerobic fermentation system.
2. the method that a kind of rapid recovery anaerobic fermentation system organic acid according to right 1 suppresses, it is characterised in that：It is described
The dosage of charcoal be 2-15g/L.
3. the method that a kind of rapid recovery anaerobic fermentation system organic acid according to claim 1 suppresses, it is characterised in that：
Described anaerobic fermentation system is 50-65 DEG C of hot fermentation system or 20-45 DEG C of mesophilic digestion system.
4. the method that a kind of rapid recovery anaerobic fermentation system organic acid according to claim 3 suppresses, it is characterised in that：
The dosage of required charcoal is 10g/L after described mesophilic digestion system and the acidifying of hot fermentation system.
5. the method that a kind of rapid recovery anaerobic fermentation system organic acid according to claim 1 suppresses, it is characterised in that：
Described charcoal is voluntarily prepared with solid waste.
6. the method that a kind of rapid recovery anaerobic fermentation system organic acid according to claim 5 suppresses, it is characterised in that：
Solid waste needed for described charcoal preparation is wood chip, sawdust or excess sludge.
7. the method that a kind of rapid recovery anaerobic fermentation system organic acid according to claim 5 suppresses, it is characterised in that：
The preparation method of described charcoal is that solid waste is placed in 500 DEG C of anaerobic environments, and it is 10-15 to control increasing extent of temperature
DEG C/min, temperature maintains 2h, sieved after cooling, stored dry is standby after reaching 500 DEG C.
8. the method that a kind of rapid recovery anaerobic fermentation system organic acid according to claim 1 suppresses, it is characterised in that：
The dosing method of described charcoal adds to be one or many.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182390A (en) * | 2018-10-11 | 2019-01-11 | 山东省科学院能源研究所 | The method of easy acidified waste water (object) anaerobic digestion methane phase |
| CN109554402A (en) * | 2018-12-10 | 2019-04-02 | 西安建筑科技大学 | A method of improving anaerobic fermentation organic loading |
| CN109609556A (en) * | 2018-12-07 | 2019-04-12 | 西安建筑科技大学 | A kind of synergisting method of anaerobic fermentation |
| CN109628296A (en) * | 2018-12-10 | 2019-04-16 | 西安建筑科技大学 | A kind of self-circulating anaerobic fermentation enhancing device and method |
| CN110819662A (en) * | 2019-10-30 | 2020-02-21 | 同济大学 | Method for promoting medium-chain fatty acid production by adding biochar in anaerobic reaction system |
| CN111118066A (en) * | 2020-01-22 | 2020-05-08 | 广东省石油与精细化工研究院 | Method for producing biogas through biochar solid acid reinforced two-phase anaerobic fermentation |
| CN111362514A (en) * | 2020-04-02 | 2020-07-03 | 西安建筑科技大学 | Anaerobic fermentation liquid advanced treatment system and method |
| CN112479360A (en) * | 2020-11-06 | 2021-03-12 | 深圳市深能环保东部有限公司 | Method for identifying and adjusting abnormity of anaerobic treatment process of domestic garbage leachate |
| CN113308496A (en) * | 2020-02-26 | 2021-08-27 | 南开大学 | Method for recovering methane production performance of anaerobic fermentation acid inhibition system by using photosynthetic bacteria |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182390A (en) * | 2018-10-11 | 2019-01-11 | 山东省科学院能源研究所 | The method of easy acidified waste water (object) anaerobic digestion methane phase |
| CN109609556A (en) * | 2018-12-07 | 2019-04-12 | 西安建筑科技大学 | A kind of synergisting method of anaerobic fermentation |
| CN109628296B (en) * | 2018-12-10 | 2022-02-11 | 西安建筑科技大学 | Self-circulation anaerobic fermentation synergistic device and method |
| CN109628296A (en) * | 2018-12-10 | 2019-04-16 | 西安建筑科技大学 | A kind of self-circulating anaerobic fermentation enhancing device and method |
| CN109554402A (en) * | 2018-12-10 | 2019-04-02 | 西安建筑科技大学 | A method of improving anaerobic fermentation organic loading |
| CN110819662A (en) * | 2019-10-30 | 2020-02-21 | 同济大学 | Method for promoting medium-chain fatty acid production by adding biochar in anaerobic reaction system |
| CN111118066A (en) * | 2020-01-22 | 2020-05-08 | 广东省石油与精细化工研究院 | Method for producing biogas through biochar solid acid reinforced two-phase anaerobic fermentation |
| CN111118066B (en) * | 2020-01-22 | 2022-05-24 | 广东省石油与精细化工研究院 | Method for producing biogas through biochar solid acid reinforced two-phase anaerobic fermentation |
| CN113308496A (en) * | 2020-02-26 | 2021-08-27 | 南开大学 | Method for recovering methane production performance of anaerobic fermentation acid inhibition system by using photosynthetic bacteria |
| CN113308496B (en) * | 2020-02-26 | 2022-11-08 | 南开大学 | Method for recovering methane production performance of anaerobic fermentation acid inhibition system by using photosynthetic bacteria |
| CN111362514A (en) * | 2020-04-02 | 2020-07-03 | 西安建筑科技大学 | Anaerobic fermentation liquid advanced treatment system and method |
| CN111362514B (en) * | 2020-04-02 | 2022-07-29 | 西安建筑科技大学 | Anaerobic fermentation liquid advanced treatment system and method |
| CN112479360A (en) * | 2020-11-06 | 2021-03-12 | 深圳市深能环保东部有限公司 | Method for identifying and adjusting abnormity of anaerobic treatment process of domestic garbage leachate |
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