CN106242216A - A kind of method utilizing cattle manure quickly to start mud superhigh temperature anaerobic digester system - Google Patents
A kind of method utilizing cattle manure quickly to start mud superhigh temperature anaerobic digester system Download PDFInfo
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- CN106242216A CN106242216A CN201610661847.3A CN201610661847A CN106242216A CN 106242216 A CN106242216 A CN 106242216A CN 201610661847 A CN201610661847 A CN 201610661847A CN 106242216 A CN106242216 A CN 106242216A
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- cattle manure
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- mud
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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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- 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
- C02F3/28—Anaerobic digestion processes
-
- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
- C02F3/2893—Particular arrangements for anaerobic reactors with biogas recycling
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/002—Apparatus and plants for the biological treatment of water, waste water or sewage comprising an initial buffer container
-
- 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
Abstract
The present invention relates to a kind of method utilizing cattle manure quickly to start mud superhigh temperature anaerobic digester system, belong to sewage disposal and solid wastes recycling field.Basic process is: (1) carries out thermophilic methane backeria in 65 DEG C of anaerobic reactors be enriched with for the first time with cattle manure and the dewatered sludge mixture of VS:VS=1:1；(2) will mix with the material completing to be enriched with for the first time with the mixture of step (1) equivalent, carry out the enrichment of thermophilic methane backeria secondary；(3) starting reactor with the cattle manure of VS:VS=1:1 and mud mixture, the dosage of every day accounts in reactor the 5 ~ 8% of total amount, and this process only feeds not discharging；(4) in the time of 3 SRT, mixed feeding is gradually replaced with pure sewage sludge feed, completes the startup of mud superhigh temperature anaerobic digestion reaction vessel.Record gas production every day, and collect gas, test methane content.When with pure sewage sludge feed, methane content reaches more than 50%, it is believed that reactor starts smoothly.Experiment proves that this method can realize the quick startup of mud superhigh temperature anaerobic reaction system.
Description
Technical field
The present invention relates to a kind of method utilizing cattle manure quickly to start mud superhigh temperature anaerobic digester system, belong to dirty
Water processes and solid wastes recycling field.
Background technology
Anaerobic digestion techniques receives much concern owing to it can reclaim the resource in mud and the energy.Most anaerobic digestions
System is run under the conditions of middle temperature (35 DEG C) and high temperature (55 DEG C).Limited owing to being hydrolyzed by organic particle, anaeration in normal temperature
The degradation effect of organic compound of digestion is relatively low, and required SRT is the most long, during thermophilic digestion, and the degraded potential of microorganism
The most sufficiently discharged.Therefore, the efficiency improving anaerobic digestion depends greatly on its hydrolysis efficiency
Improve.The optimum temperature of hydrolysis acidification bacteria growing is 55 to 70 DEG C, when the temperature of anaerobic digester system rises to 65 DEG C from 55 DEG C
Time, in mud, the dissolubility of the hardly degraded organic substance such as protein can significantly improve, and its mass transfer rate is accelerated.Hydrogen addicted to high temperature
The optimal survival temperature utilizing type methanogen is 55 to 70 DEG C, and when temperature reaches 65 DEG C, hydrogen utilizes type pathway of methane production
Efficiency reaches maximum.
Sludge hot hydrolysis is that one can accelerate sludge hydrolytic speed, improves the pretreatment technology of methane phase efficiency, in recent years
Practical Project is widely used.Mud temperature after pyrohydrolysis is higher, utilizes the residue in pyrohydrolysis mud
Heat, carries out superhigh temperature anaerobic digestion, utilizes the dissolubility of Granular sludge and the hydrolysis acidification microbial activity addicted to high temperature to carry
High feature, Sync enrichment utilizes type methanogen addicted to the hydrogen of high temperature, it is possible to increase organic degraded in anaerobic digester system
Speed and gas producing efficiency.Making full use of while hydrogen utilizes type pathway of methane production, saving with short-chain fatty acid forms such as acetic acid
The carbon source existed carries out later use, it is achieved the comprehensive utilization of carbon source.Additionally, when temperature rises to more than 60 DEG C, in mud
Pathogenic bacterium also be able to be killed, tentatively meet the requirement that specific resistance to filtration is innoxious.
At present, the research about superhigh temperature anaerobic digestion is less both at home and abroad, and the superhigh temperature anaerobism of sludge system does not disappears
Change system.Simultaneously as the kind of thermophilic methane backeria is few, generation time is long, the most difficult cultivation is bred.It addition, mud has
Machine matter content is higher, and system is complicated, easily occurs that acidification rate is too fast, and producing substantial amounts of VFAs can not be the most sharp by methanogen
With, thus cause starting failed situation.
Summary of the invention
A kind of method that it is an object of the invention to propose quick startup mud superhigh temperature anaerobic digester system, predominantly one
Plant the method utilizing cattle manure quickly to start mud superhigh temperature anaerobic digester system.
A kind of method utilizing cattle manure quickly to start mud superhigh temperature anaerobic digester system that the present invention proposes, concrete steps
As follows:
(1) inoculate cattle manure and add substrate pretreatment
After fresh cattle manure is fetched, TS and VS of test cattle manure, and it is little that the cattle manure fetched is placed in 35 DEG C of constant temperature sealing preservations 8
Time, to activate microorganism therein；Guarantee completes response system inoculation, to keep methane backeria in cattle manure in fetching latter 1 day as far as possible
Activity；Before using, it is diluted to solid content less than 8% with deionized water；
Dewatered sludge is taken as substrate, TS and VS of test dewatered sludge from sewage treatment plant；It is placed in 4 DEG C of preservations stand-by；Use
Front it is diluted to solid content less than 8% with deionized water；
(2) thermophilic methane backeria is enriched with for the first time
In VS(cattle manure): VS(dewatered sludge) ratio of=1:1, cattle manure and the dewatered sludge of step (1) gained are added to reaction
In device, dosage accounts for the 15 ~ 20% of reactor dischargeable capacity；With nitrogen by the Air blowing in reactor overhead, seal reactor,
Ensure complete anaerobic environment；Reactor service condition is: uses water-bath temperature control, is maintained at 65 DEG C, arranges stirring electricity in reactor
Machine intermittent duty, regulation stirring motor rotating speed is 10 ~ 20 r/min；Control reactor running the time is 25 ~ 30 days, during this not
Input and output material；Record gas production every day, and collect gas, test methane content；
(3) thermophilic methane backeria secondary enrichment
The dewatered sludge with step (2) products therefrom equivalent and cattle manure is added in step (2) products therefrom；Keep step (2)
Described reactor service condition, the control reactor operation time is 8 ~ 10 days, records gas production every day, and collects gas, described
Gas is methane, carbon dioxide etc., tests methane content；
(4) reactor start-up
In start-up course, in VS(cattle manure): VS(dewatered sludge)=1:1 adds and relays to step (3) described reactor ratio every day
Continue and add cattle manure and dewatered sludge, until it reaches reactor dischargeable capacity, stop charging；Every day cattle manure and the adding of dewatered sludge
Amount accounts in reactor the 5 ~ 8% of VS total amount for adding VS total amount；During this period, only charging, not discharging；Record gas production every day, and
Collect gas, test methane content, with good conditionsi in the case of, the detection conventional index such as pH, VFAs, ammonia nitrogen；
(5) superhigh temperature anaerobic digestion reaction vessel runs continuously
The mixture formed with cattle manure and dewatered sludge is for charging, in VS(cattle manure): VS(dewatered sludge)=1:1 add ratio
Feed in step (3) described reactor, stablize input and output material, be a SRT cycle with 12 days；When first SRT end cycle
After, the mixture still formed with cattle manure and dewatered sludge is for charging, in VS(cattle manure): VS(dewatered sludge)=1:2 add ratio to
Reactor feed, when, after second SRT end cycle, merely with dewatered sludge for charging, recording gas production every day, and collect gas
Body, tests methane content；In the case of with good conditionsi, detect the conventional indexs such as pH, VFAs, ammonia nitrogen；When the 3rd SRT end cycle
Time, when still feeding with dewatered sludge, reactor methane content reaches more than 50%, then it is assumed that reactor start-up smoothly completes.
Present invention have the advantage that
1., for the situation that thermophilic methane backeria kind is few, the present invention utilizes the cattle manure containing thermophilic methane backeria as inoculum, adds
The enrichment of fast thermophilic methane backeria, can shorten the startup cycle.
The most thermophilic methane backeria is high to environmental requirement, enrichment longer, difficult generation time, the present invention uses progressively mud to replace,
The mode improving organic loading starts superhigh temperature anaerobic digester system, so ensure that thermophilic methanogen can rapidly adapt to
In environment, and maintenance system, acid-producing bacteria and the eurythmy of methane backeria, be effectively ensured system stability.
3. the mud superhigh temperature anaerobic digester system that the present invention is started, organic degradation rate and gas producing efficiency are high,
Can substantially shorten SRT；While can utilizing type pathway of methane production making full use of hydrogen, save with short-chain fatty acid such as acetic acid
The carbon source that form exists carries out later use, it is achieved the comprehensive utilization of carbon source；Additionally, when temperature rises to more than 60 DEG C, dirty
Pathogenic bacterium in mud also are able to be killed, and tentatively meet the requirement that specific resistance to filtration is innoxious.
Detailed description of the invention
The present invention is illustrated below by embodiment.
In following example, cattle manure used and mud are with a collection of, and cattle manure takes from PVG ecological park, dewatered sludge
Take from Shanghai sewage treatment plant.The relevant parameter of cattle manure and mud is as shown in table 1.
Table 1 inoculates mud, dewatered sludge relevant parameter
| Material | TS(%) | VS(%) |
| Dewatered sludge | 20.80 | 10.44 |
| Cattle manure | 15.47 | 12.94 |
Embodiment 1
Anaerobic reactor dischargeable capacity is 6 L, and outside interlayer is passed through tap water, and mode of heating is electrical heating, temperature control mode
For material temperature controlling, shaft is horizontal Double helix shaft.
(1) thermophilic methane backeria is enriched with for the first time: with deionized water, cattle manure and dewatered sludge are diluted to solid content (TS) respectively
It being diluted to 8%, takes 500 g cattle manures and be added in reactor, by VS:VS(cattle manure: dewatered sludge)=1:1 adds dewatered sludge, de-
Sewage sludge adds quality 833 g, fills after getting rid of reactor overhead air with nitrogen, keeps reactor airtight, and temperature of charge is stable
At 65 DEG C, run 12 days.Alr mode is intermittent stirring, and rotating speed is 10 r/min, arranges stirring 5min, stops 5 min.
(2) thermophilic methane backeria secondary enrichment: after 12 days, adds 500 g cattle manures and 833 g dewatered sludges again, runs 10
My god.
(3) reactor start-up: every day adds VS:VS(cattle manure by reactor the 5% of material total amount: dewatered sludge)=1:1
Cattle manure and dewatered sludge, the dischargeable capacity reaching reactor in about 20 days.
(4) reactor runs continuously: with VS:VS(cattle manure: dewatered sludge) cattle manure of=1:1 and dewatered sludge mixture make
For charging, feeding 500 g every day, discharging is that inlet amount deducts organic quality of the gas consumption of estimation and (disappears producing 1L gas
Consumption 1g organic matter calculates), SRT is 12 days.One SRT week after date, is replaced by VS:VS(cattle manure by charging: dewatered sludge)=1:2
Cattle manure and dewatered sludge mixture.One SRT week after date, is replaced by and only carries out input and output material with dewatered sludge.Every day, record produced
Tolerance, and collect gas, test methane content.And detect the conventional indexs such as pH, VFAs, ammonia nitrogen.
About 80 days startup time, at the end of replacing to dewatered sludge, reactor total gas production reaches 6.2 L/d, in gas
Methane content reaches 56.3%, and startup completes.
Embodiment 2
Anaerobic reactor dischargeable capacity is 9 L, and outside interlayer is passed through tap water, and mode of heating is electrical heating, temperature control mode
For material temperature controlling, shaft is horizontal Double helix shaft.
(1) thermophilic methane backeria is enriched with for the first time: with deionized water, cattle manure and dewatered sludge are diluted to solid content (TS) respectively
It being diluted to 12%, takes 1125g cattle manure and be added in reactor, by VS:VS(cattle manure: dewatered sludge)=1:1 adds dewatered sludge, de-
Sewage sludge adds quality 1875 g, fills after getting rid of reactor overhead air with nitrogen, keeps reactor airtight, and temperature of charge is stable
At 65 DEG C, run 12 days.Alr mode is intermittent stirring, and rotating speed is 15 r/min, arranges stirring 5 min, stops 5 min.
(2) thermophilic methane backeria secondary enrichment: after 12 days, adds 1125 g cattle manures and 1875 g dewatered sludges again, runs 8
My god.
(3) reactor start-up: every day adds VS:VS(cattle manure by reactor the 8% of material total amount: dewatered sludge)=1:1
Cattle manure and dewatered sludge, the dischargeable capacity reaching reactor in about 13 days.
(4) reactor runs continuously: with VS(cattle manure): VS(dewatered sludge) cattle manure of=1:1 and dewatered sludge mixture make
For charging, feeding 750 g every day, discharging is that inlet amount deducts organic quality of the gas consumption of estimation and (disappears producing 1L gas
Consumption 1g organic matter calculates), SRT is 12 days.One SRT week after date, is replaced by VS(cattle manure by charging): VS(dewatered sludge)=1:2
Dewatered sludge and cattle manure mixture.After one SRT, it is replaced by and only carries out input and output material with dewatered sludge.Every day records gas production,
And collect gas, test methane content.And detect the conventional indexs such as pH, VFAs, ammonia nitrogen.
About 70 days startup time, at the end of replacing to mud, reactor total gas production reaches 12.375 L/d, first in gas
Alkane content reaches 52.5%, and startup completes.
Claims (1)
1. one kind utilizes the method that cattle manure quickly starts mud superhigh temperature anaerobic digester system, it is characterised in that concrete steps are such as
Under:
(1) inoculate cattle manure and add substrate pretreatment
After fresh cattle manure is fetched, TS and VS of test cattle manure, and it is little that the cattle manure fetched is placed in 35 DEG C of constant temperature sealing preservations 8
Time, to activate microorganism therein；Guarantee completes response system inoculation, to keep methane backeria in cattle manure in fetching latter 1 day as far as possible
Activity；Before using, it is diluted to solid content less than 8% with deionized water；
Dewatered sludge is taken as substrate, TS and VS of test dewatered sludge from sewage treatment plant；It is placed in 4 DEG C of preservations stand-by；Use
Front it is diluted to solid content less than 8% with deionized water；
(2) thermophilic methane backeria is enriched with for the first time
In VS(cattle manure): VS(dewatered sludge) ratio of=1:1, cattle manure and the dewatered sludge of step (1) gained are added to reaction
In device, dosage accounts for the 15 ~ 20% of reactor dischargeable capacity；With nitrogen by the Air blowing in reactor overhead, seal reactor,
Ensure complete anaerobic environment；Reactor service condition is: uses water-bath temperature control, is maintained at 65 DEG C, arranges stirring electricity in reactor
Machine intermittent duty, regulation stirring motor rotating speed is 10 ~ 20 r/min；Control reactor running the time is 25 ~ 30 days, during this not
Input and output material；Record gas production every day, and collect gas, test methane content；
(3) thermophilic methane backeria secondary enrichment
The dewatered sludge with step (2) products therefrom equivalent and cattle manure is added in step (2) products therefrom；Keep step (2)
Described reactor service condition, the control reactor operation time is 8 ~ 10 days, records gas production every day, and collects gas, test
Methane content；
(4) reactor start-up
In start-up course, in VS(cattle manure): VS(dewatered sludge)=1:1 adds and relays to step (3) described reactor ratio every day
Continue and add cattle manure and dewatered sludge, until it reaches reactor dischargeable capacity, stop charging；Every day cattle manure and the adding of dewatered sludge
Amount accounts in reactor the 5 ~ 8% of VS total amount for adding VS total amount；During this period, only charging, not discharging；Record gas production every day, and
Collect gas, test methane content；
(5) superhigh temperature anaerobic digestion reaction vessel runs continuously
The mixture formed with cattle manure and dewatered sludge is for charging, in VS(cattle manure): VS(dewatered sludge)=1:1 add ratio
Feed in step (3) described reactor, stablize input and output material, be a SRT cycle with 12 days；When first SRT end cycle
After, the mixture still formed with cattle manure and dewatered sludge is for charging, in VS(cattle manure): VS(dewatered sludge)=1:2 add ratio to
Reactor feed, when, after second SRT end cycle, merely with dewatered sludge for charging, recording gas production every day, and collect gas
Body, tests methane content；When the 3rd SRT end cycle, when still feeding with dewatered sludge, reactor methane content reaches
More than 50%, then it is assumed that reactor start-up smoothly completes.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110407411A (en) * | 2019-08-01 | 2019-11-05 | 浙江天地环保科技有限公司 | A kind of livestock and poultry feces anaerobic digestion biogas slurry pyrohydrolysis reclaiming system and method |
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| JP3483243B2 (en) * | 1999-01-29 | 2004-01-06 | 日本碍子株式会社 | Anaerobic treatment of organic sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110407411A (en) * | 2019-08-01 | 2019-11-05 | 浙江天地环保科技有限公司 | A kind of livestock and poultry feces anaerobic digestion biogas slurry pyrohydrolysis reclaiming system and method |
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