CN106755125A - A kind of cellulose ethanol draff liquid and the processing method of agricultural wastes mixed fermentation - Google Patents
A kind of cellulose ethanol draff liquid and the processing method of agricultural wastes mixed fermentation Download PDFInfo
- Publication number
- CN106755125A CN106755125A CN201611237533.7A CN201611237533A CN106755125A CN 106755125 A CN106755125 A CN 106755125A CN 201611237533 A CN201611237533 A CN 201611237533A CN 106755125 A CN106755125 A CN 106755125A
- Authority
- CN
- China
- Prior art keywords
- liquid
- stalk
- fermentation
- processing method
- draff
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
-
- 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
- C12P2201/00—Pretreatment of cellulosic or lignocellulosic material for subsequent enzymatic treatment or hydrolysis
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Processing Of Solid Wastes (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of cellulose ethanol draff liquid and the processing method of agricultural wastes mixed fermentation, belong to bioenergy technical field.Processing method includes：Add the first alkali lye to carry out neutralization in cellulose ethanol draff liquid and be made composite waste, and the pH value of composite waste is 6.5 8；Stalk after composite waste and pig manure and/or alkali process is mixed and made into fermenation raw liquid, and control fermenation raw liquid TS concentration ranges 3% 9%；Fermenation raw liquid is carried out into anaerobic fermentation, and collects the biogas that fermentation is produced.The pH value of cellulose ethanol draff liquid is adjusted using the first alkali lye, then the stalk after composite waste and pig manure and/or alkali process is mixed and made into fermenation raw liquid, anaerobic fermentation is carried out to fermenation raw liquid to produce biogas, while stalk, the ability of pig manure fermentation production biogas is enhanced, also enhance the Degradation and Transformation of cellulose ethanol draff liquid, the biogas output of agricultural waste fermentation is not only increased, and solves the problems, such as that cellulose ethanol draff liquid is difficult to fermentative degradation.
Description
Technical field
The present invention relates to bioenergy technical field, more particularly to a kind of cellulose ethanol draff liquid mixes with agricultural wastes
The processing method of fermentation.
Background technology
It is ethanol cleaning, environmentally friendly, renewable, it is a kind of great desired energy that can replace oil as fuel.Tradition
Ethanol industry is that raw material produces ethanol using grain, is raw material such as using the corn that content of starch enriches, without too complex
Technique can carry out fermentative production of ethanol, and ethanol production is higher, but due to haveing the shortcomings that striving grain with people is unfavorable for pushing away on a large scale
Extensively, therefore with fiber-like raw material grain is replaced to be that raw material produces ethanol as future developing trend.China Henan day is preced with this stage
The cellulose ethanol production line of group realizes the target for producing 3000t ethanol per year, is given birth to using agricultural wastes such as stalks as raw material
Producing and ethanol, its conversion coefficient is 43%, and sugar alcohol conversion ratio is 91%.But, during fermenting cellulosic ethanol, a large amount of pairs can be produced
Product, fermenting cellulosic ethanol wine with dregs is cellulose ethanol by the raffinate after distillation, then by the supernatant obtained after separation of solid and liquid
Draff liquid, the cellulose ethanol draff liquid yield is big, often produces 1t ethanol, produces draff liquid to have 11-15t.Wherein, draff liquid pH
It is 4-5 to be worth, and containing large amount of organic, having had been detected as kind more than 50 includes small molecule volatile acid, furan derivative, aldehyde
Class, also a large amount of inorganic matters ultimately result in the COD value up to 30000-50000mg/L of draff liquid, and wherein acetic acid content is reachable
20000mg/L, poor liquid colourity is high, complex process and difficulty needed for draff liquid treatment, and the draff liquid after fermenting cellulosic ethanol is added
It is a very meaningful job with resource and recovery energy.
The treatment and utilization of draff liquid have various methods, wherein, physical method includes draff liquid condensed combustion method, membrane technology
Method, plate compression method, centrifugal separation and natural sedimentation etc.,；Chemical method mainly includes the oxidizing side of addition
Method and the method using anaerobic bio-treated.Be used alone physical method can not degradable draff liquid, and use addition aoxidize
The method of agent oxidation haves the shortcomings that cost is with high investment big and not environmentally friendly enough, but, then can be fine using anaerobic bio-treated
Solve this problem.Anaerobic fermentation can be wider using substrate spectrum, and processing procedure is gentle, can be by organic substance in poor liquid
Using biogas is converted into, energy conversion is improved, while reducing waste water organic concentrations.
With cellulose ethanol draff liquid as single substrate directly carry out anaerobic fermentation when, because draff liquid carbon-nitrogen ratio is relatively low, pH
It is worth the features such as low, organic acid content is high, suspension content is high, under conditions of the carbon-nitrogen ratio and pH value for not adjusting draff liquid directly
Anaerobic fermentation is carried out easily to fail.
The content of the invention
It is that single substrate directly carries out anaerobic fermentation easily failure, this hair to solve the problems, such as with cellulose ethanol draff liquid
Bright embodiment provides the processing method of a kind of cellulose ethanol draff liquid and agricultural wastes mixed fermentation.The technical scheme is such as
Under：
The embodiment of the invention provides the processing method of a kind of cellulose ethanol draff liquid and agricultural wastes mixed fermentation, institute
Stating processing method includes：
(1) add the first alkali lye to carry out neutralization in cellulose ethanol draff liquid and be made composite waste, and composite waste pH
It is 6.5-8 to be worth；
(2) stalk after composite waste and pig manure and/or alkali process is mixed and made into fermenation raw liquid, and control fermenation raw liquid
TS concentration ranges in 3%-9%；Fermenation raw liquid is carried out into anaerobic fermentation, and collects the biogas that fermentation is produced.
The alkali process of stalk are known in the art technology, specifically, in above-mentioned steps (2), the straw after the alkali process
Stalk is obtained by following methods：
Stalk is pre-processed with the second alkali lye, after pretreatment, solid-liquid point is carried out to pretreated mixture
From the solid for obtaining obtains the stalk after alkali process after drying.
Wherein, separation of solid and liquid such as uses filter screen, the solid after separation to obtaining using the method for simple sieving
The stalk after alkali process is obtained after being dried.
Further, in the above-mentioned methods, carrying out pretreatment to stalk with the second alkali lye includes：
By stalk infiltration in the second alkali lye, timing agitation allows the second alkali lye fully to infiltrate stalk.
Preferably, in the method for above-mentioned pretreated straw, second alkali lye is that mass fraction is the NaOH of 1%-3%
Solution, pretreatment temperature is 40 DEG C -60 DEG C, the time is 12h-36h, solid-to-liquid ratio is 7.5%-10%.It should be noted that solid-liquid
Than being a kind of concentration unit, in the present invention, the mass ratio of stalk quality and solvent reclaimed water is specifically referred to.
Preferably, the particle diameter≤3mm of the stalk for using.
In a kind of possible implementation of the invention, in step (2), when being mixed using composite waste and pig manure,
Control TS concentration≤6%.
In alternatively possible implementation of the invention, in step (2), at using composite waste and pig manure and alkali
When stalk after reason mixes, the TS mass ratioes ratio of stalk after alkali process and pig manure in fermenation raw liquid is 1:2~2:1, wherein
Mass ratio is 1:1 or so preferably.
Wherein, TS mass is the total solids content in sample, and the total solids content that TS concentration is referred in sample accounts for sample
The gross mass of the solid masses/sample in the percentage of the gross mass of product, i.e. TS concentration=sample.
In step (2), the anaerobic fermentation using conventional stalk, pig manure fermentation condition, specifically, can be with
It is：
Anaerobic fermentation is carried out at a temperature of 35-55 DEG C.
Preferably, after being pre-processed to stalk with the second alkali lye, the processing method also includes：
After carrying out separation of solid and liquid to the mixture that stalk and the second alkali lye are constituted, the remaining alkali lye for obtaining is used as first
Alkali lye, in adding cellulose ethanol draff liquid in step (1).
Preferably, after step (2), the processing method also includes：
Fermenation raw liquid after fermentation is carried out into separation of solid and liquid, the biogas residue of solid and the biogas slurry of liquid is obtained, the biogas slurry is returned
The second alkali lye for being formulated for pretreated straw raw material.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：Use however, residual base after stalk alkali process
Liquid adjusts the pH value of cellulose ethanol draff liquid, then mixes the stalk after pig manure and/or alkali process with cellulose ethanol draff liquid
Fermentation raw material is made, carries out anaerobic fermentation to fermentation raw material to produce biogas, biogas is produced stalk, pig manure fermentation is enhanced
While ability, the Degradation and Transformation of cellulose ethanol draff liquid is also enhanced, can individually by the stalk after alkali process and fiber second
Alcohol draff liquid carries out being mixed and made into fermenation raw liquid, it is also possible to individually carry out being mixed and made into fermentation by pig manure and cellulose ethanol draff liquid
Stoste, the stalk and cellulose ethanol draff liquid after pig manure and alkali process can also be carried out being mixed and made into fermenation raw liquid, pig simultaneously
Stalk after excrement and alkali process is used to provide necessary nutrition in fermentation process, to prevent individually to cellulose ethanol draff liquid
Fermented, the easy problem for failing of fermenting is caused due to lacking necessary nutrition, extensively, low cost is not only carried raw material sources
The biogas output of agricultural waste fermentation high, and solve the problems, such as that cellulose ethanol draff liquid is difficult to fermentative degradation.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only one embodiment of the present of invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the processing method stream of cellulose ethanol draff liquid provided in an embodiment of the present invention and agricultural wastes mixed fermentation
Cheng Tu；
Fig. 2 is the fermentation time-aerogenesis schematic diagram of the embodiment of the present invention 1,2,3 and comparative examples 2；
Fig. 3 is the fermentation time-aerogenesis schematic diagram of the embodiment of the present invention 4,5,6 and comparative examples 3；
Fig. 4 is the fermentation time-aerogenesis contrast schematic diagram of the embodiment of the present invention 7,8,9.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is the processing method stream of cellulose ethanol draff liquid provided in an embodiment of the present invention and agricultural wastes mixed fermentation
Cheng Tu, referring to Fig. 1, in the embodiment 1-9 and comparative examples 1-3 under aftermentioned laboratory condition, stalk after alkali process and
First alkali lye is obtained by following methods：
Using NaOH solution that mass fraction is 2% as the second alkali lye, stalk is pre-processed, by stalk
Mixed with the second alkali lye, the solid-to-liquid ratio of stalk and the second alkali lye is 10%, is processed 12 hours under conditions of 60 DEG C.
Separation of solid and liquid is carried out to the mixture that stalk and the second alkali lye are constituted after pretreatment, the solid obtained after separation is obtained after drying
Stalk after to alkali process, the remaining alkali lye for obtaining is used as the first alkali lye.Wherein, the stalk TS concentration after alkali process is about
92%.
It should be noted that in other embodiments of the invention, it is 1%-3% that the second alkali lye can use mass fraction
NaOH solution alkali lye such as (or) aqua calcises pre-processed, the scope of the solid-to-liquid ratio of stalk and the second alkali lye is
7.5%-10%, temperature is 40-60 DEG C, and the time of pretreatment is 12-36 hours.
Embodiment 1
50mL cellulose ethanol draff liquids are processed in laboratory conditions, and processing method is as follows：
(1) 50mL cellulose ethanols draff liquid is mixed with the alkali lye of 100mL first, is made composite waste, and mixing is useless
The pH value of water be 7.09, it is necessary to explanation, in the present invention, cellulose ethanol draff liquid is neutralized, make composite waste
PH value is 6.5-8.
(2) take the stalk after 5g alkali process to be mixed with composite waste, be made fermentation raw material, added in fermentation raw material
200mL sludge, finally adds the fermenation raw liquid that biogas slurry constitutes 400mL, anaerobic fermentation (30 days 30 days under 35 DEG C of fermentation temperature
When fermentation be over), using drainage collect gas, monitoring gas in methane content and fermentation after fermentation stoste in
COD value (record experimental result is shown in Table 1).
Specifically, the TS concentration computing formula of stalk is m in fermentation raw materialStalk* 92%/(mStalk+mPoor liquid+mFirst alkali lye)=5*
0.92/ (5+50+100)=0.03.Therefore, TS concentration of the stalk after 5g alkali process in fermentation raw material is about 3%.
Because the former COD value of cellulose ethanol draff liquid is higher, comparatively, first alkali lye and sludge of addition etc. it is available
It is relatively low in the COD value of fermentation, can omit and disregard, therefore, the initial COD value of fermenation raw liquid is close in each experimental group, and is made
The initial COD value of each group fermenation raw liquid be each about 5500mg/L.
It should be noted that above-mentioned sludge and biogas slurry from anaerobic fermentation gas production terminate after anaerobic fermentation tank in obtain, it is dirty
Mud is the base sludge in anaerobic fermentation tank, and biogas slurry is the upper liquid in anaerobic fermentation tank.Sludge is micro- rich in anaerobic fermentation
Biology, used as anaerobic fermentation inoculum, the TS mass of the sludge of addition is the 50%-60% of stalk TS mass, and biogas slurry is used for
The total fermentation volume of regulation.
Embodiment 2
Stalk after 5g alkali process in the step of embodiment 1 (2) is substituted for the stalk after 10g alkali process, remaining step
Same as Example 1, record experimental result is shown in Table 1.
In the present embodiment, can be calculated be the TS concentration of stalk after 10g alkali process in fermentation raw material about
It is 6%.
Embodiment 3
Stalk after 5g alkali process in the step of embodiment 1 (2) is substituted for the stalk after 15g alkali process, remaining step
Same as Example 1, record experimental result is shown in Table 1.
In the present embodiment, can be calculated be the TS concentration of stalk after 15g alkali process in fermentation raw material about
It is 9%.
Embodiment 4
Stalk after 5g alkali process in the step of embodiment 1 (2) is substituted for 20g pig manures, remaining step with embodiment 1
Identical, record experimental result is shown in Table 1.
It should be noted that the pig manure for using is fresh pig manure, the TS concentration of wherein pig manure is about 23.29%, wherein,
The computing formula of TS concentration of the 20g pig manures in fermentation raw material is mPig manure* 23.29%/(mPig manure+mPoor liquid+mFirst alkali lye)=20*
0.2329/ (20+50+100)=0.03, therefore, TS concentration of the 20g pig manures in fermentation raw material is about 3%.
Embodiment 5
Stalk after 5g alkali process in the step of embodiment 1 (2) is substituted for 40g pig manures, remaining step with embodiment 1
Identical, record experimental result is shown in Table 1.
In the present embodiment, what can be calculated is that TS concentration of the 40g pig manures in fermentation raw material is about 6%.
Embodiment 6
Stalk after 5g alkali process in the step of embodiment 1 (2) is substituted for 60g pig manures, remaining step with embodiment 1
Identical, record experimental result is shown in Table 1.
In the present embodiment, what can be calculated is that TS concentration of the 60g pig manures in fermentation raw material is about 9%.
Embodiment 7
Stalk after 5g alkali process in the step of embodiment 1 (2) is substituted for the stalk after 10g alkali process and 20g pig manures,
Remaining step is same as Example 1, and record experimental result is shown in Table 1.
Wherein, after TS concentration of the stalk and 20g pig manures after 10g alkali process in fermentation raw material is about 9%, and alkali process
Stalk and pig manure TS concentration ratios be 2:1.
Embodiment 8
Stalk after 5g alkali process in the step of embodiment 1 (2) is substituted for the stalk after 7.5g alkali process and 30g pigs
Excrement, remaining step is same as Example 1, and record experimental result is shown in Table 1.
Wherein, TS concentration of the stalk and 30g pig manures after 7.5g alkali process in fermentation raw material is about 9%, and alkali process
Stalk and the TS concentration ratios of pig manure afterwards is 1:1.
Embodiment 9
Stalk after 5g alkali process in the step of embodiment 1 (2) is substituted for the stalk after 5g alkali process and 40g pig manures,
Remaining step is same as Example 1, and record experimental result is shown in Table 1.
Wherein, after TS concentration of the stalk and 40g pig manures after 5g alkali process in fermentation raw material is about 9%, and alkali process
Stalk and pig manure TS concentration ratios be 1:2.
Comparative examples 1
Stalk after being added without 5g alkali process in (2) the step of embodiment 1, remaining step is same as Example 1, and
Record experimental result is shown in Table 1.
Comparative examples 2
Take the stalk after 10g alkali process and the alkali lye of 50mL first and 100mL distilled water (distilled water alternative fiber ethanol useless grain
Liquid is added) mixed, fermentation raw material is made, 200mL sludge is added in fermentation raw material, finally add biogas slurry composition 400mL
Fermenation raw liquid, anaerobic fermentation 30 days under 35 DEG C of fermentation temperature, using drainage collect gas, monitoring gas in methane
COD value in content and fermentation after fermentation stoste (record experimental result is shown in Table 1).
Comparative examples 3
40g pig manures are taken to enter with the alkali lye of 50mL first and 100mL distilled water (addition of distilled water alternative fiber ethanol draff liquid)
Row mixing, is made fermentation raw material, and 200mL sludge is added in fermentation raw material, finally adds the proferment that biogas slurry constitutes 400mL
Liquid, anaerobic fermentation 30 days under 35 DEG C of fermentation temperature, using drainage collect gas, monitoring gas in methane content and
COD value in fermentation after fermentation stoste (record experimental result is shown in Table 1).
Table 1
Referring to table 1, in comparative examples 1, by cellulose ethanol draff liquid and the first alkali lye and after be made fermenation raw liquid again,
Fermenation raw liquid fails normal fermentation.
Referring to table 1, in embodiment 1,2,3, after stalk is mixed with cellulose ethanol draff liquid, stalk TS is made dense
Degree is respectively 3%, 6%, 9% fermenation raw liquid, and fermenation raw liquid can produce biogas with normal fermentation, and by the and of embodiment 1,2,3
Comparative examples 1 compare and understand, the COD degradation rate in cellulose ethanol draff liquid is significantly improved.
Experimentation according to embodiment 1,2,3 and comparative examples 2 draws out Fig. 2, referring to Fig. 2, in comparative examples 2
Stalk TS concentration be 6% fermenation raw liquid in without addition cellulose ethanol draff liquid, fermenation raw liquid can produce with normal fermentation
Biogas, with reference to table 1 and Fig. 2, is compared from embodiment 2 with comparative examples 2, and stalk is mixed with cellulose ethanol draff liquid
After fermented stalk is fermented compared to without cellulose ethanol draff liquid, the factor of created gase of fermentation has obtained significantly carrying
It is high.
Referring to table 1, in embodiment 4,5,6, after pig manure is mixed with cellulose ethanol draff liquid, pig manure TS is made dense
Degree is respectively 3%, 6%, 9% fermenation raw liquid, and fermenation raw liquid can produce biogas with normal fermentation, and by the and of embodiment 4,5,6
Comparative examples 1 compare and understand, the COD degradation rate in cellulose ethanol draff liquid is significantly improved.Further, since pig
Excrement excessive concentration can cause the ammonia of low C/N to suppress to produce, and in order to ensure being normally carried out for fermentation, control generally be needed in production
The TS concentration of pig manure is within 6%.
Experimentation according to embodiment 4,5,6 and comparative examples 3 draws out Fig. 3, referring to Fig. 3, comparative examples 3
In pig manure TS concentration be 6% fermenation raw liquid in without addition cellulose ethanol draff liquid, fermenation raw liquid can produce with normal fermentation
Raw biogas, with reference to table 1 and Fig. 3, is compared from embodiment 5 with comparative examples 3, and pig manure is mixed with cellulose ethanol draff liquid
Fermented after conjunction pig manure is fermented compared to without cellulose ethanol draff liquid, the factor of created gase of fermentation has been obtained significantly
Improve.
Referring to table 1, in embodiment 7,8,9, while (alkali after pig manure and stalk are mixed with cellulose ethanol draff liquid
Stalk after treatment is respectively 1 with the TS concentration ratios of pig manure:2、1:1、2:1) fermenation raw liquid that TS concentration is respectively 9%, is made,
Fermenation raw liquid can produce biogas with normal fermentation, and be compared with comparative examples 1 from embodiment 7,8,9, cellulose ethanol
COD degradation rate in draff liquid is significantly improved.
Experimentation according to embodiment 7,8,9 draws out Fig. 4, and referring to Fig. 4, comparing embodiment 7,8,9 understands, proferment
When stalk and pig manure TS concentration ratios are 1 in liquid:When 1, the factor of created gase highest of fermenation raw liquid fermentation.
In the processing method that the present invention is provided, individually the stalk after alkali process and cellulose ethanol draff liquid can be mixed
Conjunction is made fermenation raw liquid, it is also possible to individually carry out being mixed and made into fermenation raw liquid by pig manure and cellulose ethanol draff liquid, can also be same
When the stalk after alkali process and pig manure and cellulose ethanol draff liquid are carried out being mixed and made into fermenation raw liquid, after pig manure and alkali process
Stalk is used to provide necessary nutrition in fermentation process, to prevent from individually fermenting cellulose ethanol draff liquid, due to
Lacking necessary nutrition causes the easy problem for failing of fermenting.
So can be according to actual production, the mixing for selecting more cheap raw material to carry out cellulose ethanol draff liquid is sent out
Ferment, such as local stalk resource enriches, and the price of stalk is more cheap, in order to cost-effective, can gather materials on the spot, and uses stalk
To carry out the mixed fermentation of cellulose ethanol draff liquid, control TS concentration ranges are in 3-9%, it is ensured that fermentation is normally carried out；If worked as
Ground pig manure aboundresources, pig manure price is more cheap, it is possible to use pig manure carries out the mixed fermentation of cellulose ethanol draff liquid, needs
It should be noted that using pig manure and during draff liquid mixed fermentation, because pig manure excessive concentration can cause the ammonia of low C/N to suppress to produce
It is raw, it is therefore desirable to control the TS concentration of pig manure within 6%；If local pig manure and stalk are all relatively cheap, in order to improve to useless
The treatment effeciency of thing, can simultaneously add pig manure and stalk, after stalk and pig manure are mixed, be mixed into draff liquid, and TS concentration can be with
Using 3-9% scopes, it is preferable that when the dry weight of stalk and pig manure is than controlling 1:When 1 or so, the factor of created gase of fermentation is higher.
The beneficial effects of the invention are as follows：Using remaining alkali lye after stalk alkali process as the first alkali lye and cellulose ethanol
Draff liquid is mixed and made into composite waste, the pH value of cellulose ethanol draff liquid is adjusted, then by the stalk after pig manure and/or alkali process
Fermentation raw material is mixed and made into composite waste, carries out anaerobic fermentation to fermenation raw liquid to produce biogas, enhancing stalk, pig manure
While the ability of fermentation and biogas production, the Degradation and Transformation of cellulose ethanol draff liquid is also enhanced, can individually by after alkali process
Stalk and composite waste carry out being mixed and made into fermenation raw liquid, it is also possible to individually pig manure and composite waste are carried out being mixed and made into hair
Ferment stoste, carries out with composite waste being mixed and made into proferment again after can also the stalk after alkali process be mixed with pig manure
Stalk after liquid, pig manure and alkali process is used to provide necessary nutrition in fermentation process, to prevent individually to cellulose ethanol
Draff liquid is fermented, and the easy problem for failing of fermenting is caused due to lacking necessary nutrition, and raw material sources are extensive, low cost,
The biogas output of agricultural waste fermentation is not only increased, and solves the problems, such as that cellulose ethanol draff liquid is difficult to fermentative degradation.
Embodiment 10
According to above-mentioned experiment, application of the present invention in industrial production is illustrated below, as a example by producing 1 ton of cellulose ethanol,
Its cellulose ethanol draff liquid for producing is about 11 tons, the use of stalk is raw material and cellulose ethanol mixed fermentation in the present embodiment,
In order to economize in raw materials, the TS concentration of the stalk that fermenation raw liquid is used in the present embodiment is 3%.
Stalk is pre-processed firstly the need of with the second alkali lye, it is possible to use sodium hydroxide solution or calcium hydroxide
Solution etc. is pre-processed as the second alkali lye to stalk, wherein, the model of the mass fraction of the second alkali lye in 1%-3%
Enclose, being pre-processed using alkali lye mainly can be with the lignin in degrading straw raw material, and alkali lye is for cellulose and half fiber
The destruction of element is not enough, therefore carries out pretreatment using alkali lye and can retain more organic matters, obtains a greater degree of energy
Amount conversion ratio.
In the present embodiment, the second alkali lye uses the NaOH solution that mass fraction is 2%, and mass fraction is 2%
NaOH solution can be more abundant with lignin degrading, and other side reactions are less likely to occur.
Before alkali process are carried out to stalk, stalk first can be crushed to particle diameter≤3mm, so be easy to straw
The abundant pretreatment of stalk, then the NaOH solution that stalk and mass fraction are 2% is mixed and made into mixture, wherein, mixing
Solid-to-liquid ratio in thing is 7%-10%, is pre-processed 12-36 hours at a temperature of 60-85 DEG C.In the present embodiment, use is consolidated
Liquor ratio is 7.5%, and temperature is 60 DEG C, and pretreatment time is 12 hours.
Because in the present embodiment, the stalk TS concentration in the zymotic fluid of preparation is 3%, it is contemplated that during stalk pretreatment
Loss, pretreated straw 0.7-1.0 tons, the NaOH solution that about 11 tons of mass fractions need to be added to be 2% is pre-processed.
In order to cost-effective, increase the benefit, the remaining alkali lye that will can have been processed after stalk is used as the first alkali lye
In neutralization cellulose ethanol draff liquid.
Therefore, in the present embodiment, processing method is：
0.7-1.0 tons of stalk is crushed to after particle diameter≤3mm in sending into pretreatment pool, is added about in pretreatment pool
11 tons of mass fractions are 2% NaOH solution, under conditions of 60 DEG C, pretreated straw raw material 12 hours, in order to make NaOH molten
Liquid fully infiltrates stalk, during pretreatment, stalk and NaOH solution in timing agitation pretreatment pool
Mixture, after the completion of pretreatment, separation of solid and liquid is carried out to pretreated mixture, and isolated solid is for after alkali process
Stalk, isolated remaining alkali lye is the first alkali lye for neutralizing cellulose ethanol draff liquid.
First alkali lye and cellulose ethanol draff liquid are mixed in regulating reservoir, after neutralization, composite waste is obtained, is mixed
The pH value of waste water is slightly larger than 7, because during the fermentation, fermenation raw liquid is susceptible to acidifying, causes fermentation to be difficult to, because
This, the pH value for adjusting composite waste has great importance, and the pH of composite waste is adjusted using the remaining alkali lye after alkali process
Value has saved cost, improves benefit, and cellulose ethanol draff liquid and remaining alkali lye can be added in regulating reservoir by changing
Speed controls to adjust the pH value of the composite waste in pond.
Stalk after the composite waste and alkali process that will obtain is mixed in fermentation tank, is made fermenation raw liquid, in hair
Anaerobic fermentation is carried out in fermentation tank to fermenation raw liquid, the biogas that fermentation is produced is collected.30 days anaerobism hairs of hydraulic retention in fermentation tank
After ferment, final producible biogas is about 24000m3, wherein methane concentration is more than 60%.
In this embodiment, the anaerobic fermentation tank that fermentation is used uses the full mixing and stirring tanks of CSTR, the top of fermentation tank
Motor is provided with, agitating paddle is provided with fermentation tank, motor control agitating paddle is to the fermenation raw liquid timing agitation in fermentation tank.
In addition, being also equipped with fermentation tank for the thermometer for monitoring yeasting temperature, pressure inside the tank of being fermented for monitoring
Pressure gauge, the pH meter for monitoring fermenation raw liquid pH value, for monitoring in fermentation tank the liquid level gauge of liquid level and for adjusting
The heating tube of temperature in section fermentation tank.Anaerobic fermentation uses 35 DEG C of mesophilic digestions or 55 DEG C of hot fermentations, can be by heating tube
To adjust the temperature of fermenation raw liquid in fermentation tank；The gas production in fermentation tank is observed by pressure gauge, when need increase aerogenesis
During amount, can be realized by improving input concentration and fermentation temperature；The pH value of fermenation raw liquid is monitored by pH meter, works as system
When pH is slightly lower, using raw material regulation C/N ratios and the pH value such as composite waste and pig manure for feeding, to maintain to stablize gassy fermentation.
After fermentation ends, the fermenation raw liquid after fermentation can also be reused, specifically included, after fermentation
Fermenation raw liquid carry out separation of solid and liquid, the solid obtained after separation can be used to make organic fertilizer and be used, and be obtained after separation
Biogas slurry can be back to and prepare the second alkali lye for being used of pretreated straw, it is also possible to for agricultural irrigation, can also repeat
It is used in dilution fermenation raw liquid and fermenation raw liquid TS concentration is adjusted with this.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of processing method of cellulose ethanol draff liquid and agricultural wastes mixed fermentation, it is characterised in that the treatment side
Method includes：
(1) add the first alkali lye to carry out neutralization in cellulose ethanol draff liquid and be made composite waste, and the pH value of composite waste is
6.5-8；
(2) stalk after composite waste and pig manure and/or alkali process is mixed and made into fermentation raw material, and controls the TS of fermentation raw material
Concentration range is in 3%-9%；Fermentation raw material is carried out into anaerobic fermentation, and collects the biogas that fermentation is produced.
2. processing method according to claim 1, it is characterised in that the stalk in step (2) after alkali process is by with lower section
Method is obtained：
Stalk is pre-processed with the second alkali lye, separation of solid and liquid is carried out to pretreated mixture, the solid for obtaining
The stalk after alkali process is obtained after drying.
3. processing method according to claim 2, it is characterised in that pretreatment bag is carried out to stalk with the second alkali lye
Include：
By stalk infiltration in the second alkali lye, timing agitation allows the second alkali lye fully to infiltrate stalk.
4. processing method according to claim 3, it is characterised in that
In step (2), after carrying out separation of solid and liquid with the mixture after the second Alkaline pretreatment stalk, the however, residual base for obtaining
Liquid as the first alkali lye, in adding cellulose ethanol draff liquid in step (1).
5. processing method according to claim 2, it is characterised in that after step (2), the processing method also includes：
Fermenation raw liquid after fermentation is carried out into separation of solid and liquid, the biogas residue of solid and the biogas slurry of liquid is obtained, the biogas slurry is back to
It is formulated for the second alkali lye of pretreated straw raw material.
6. processing method according to claim 2, it is characterised in that second alkali lye is that mass fraction is 1%-3%
NaOH solution, pretreatment temperature be 40-60 DEG C, the time be 12-36h, solid-to-liquid ratio be 7.5%-10%.
7. processing method according to claim 2, it is characterised in that the particle diameter≤3mm of the stalk.
8. the processing method according to claim any one of 1-7, it is characterised in that in step (2), when using composite waste
When mixing with pig manure, TS concentration≤6% is controlled.
9. the processing method according to claim any one of 1-7, it is characterised in that in step (2), when using composite waste
When mixing with the stalk after pig manure and alkali process, the TS concentration ratios of stalk after alkali process and pig manure in fermenation raw liquid are 1:2
~2:1.
10. the processing method according to claim any one of 1-7, it is characterised in that in step (2), anaerobic fermentation
Temperature is 35-55 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237533.7A CN106755125B (en) | 2016-12-28 | 2016-12-28 | Treatment method for mixed fermentation of cellulosic ethanol waste liquid and agricultural wastes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237533.7A CN106755125B (en) | 2016-12-28 | 2016-12-28 | Treatment method for mixed fermentation of cellulosic ethanol waste liquid and agricultural wastes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106755125A true CN106755125A (en) | 2017-05-31 |
| CN106755125B CN106755125B (en) | 2020-04-24 |
Family
ID=58925081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611237533.7A Active CN106755125B (en) | 2016-12-28 | 2016-12-28 | Treatment method for mixed fermentation of cellulosic ethanol waste liquid and agricultural wastes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106755125B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110452936A (en) * | 2019-08-06 | 2019-11-15 | 华中农业大学 | The method of vacuum cavitations kitchen waste water anaerobic fermentation raising volatile fat acid yield |
| CN111732468A (en) * | 2020-07-01 | 2020-10-02 | 上海农乐生物制品股份有限公司 | Use of corn by-products in fecal treatment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174588A (en) * | 2011-03-04 | 2011-09-07 | 南阳天冠生物发酵有限公司 | Methane production method by adopting cellulosic ethanol byproduct as main raw material |
| CN102910777A (en) * | 2011-08-01 | 2013-02-06 | 中国石油化工股份有限公司 | Treatment method for wastewater generated in cellulosic ethanol production |
| CN103102012A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Anaerobic biochemistry treatment method for cellulose ethanol wastewater |
| CN106746162A (en) * | 2015-11-19 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of processing method of cellulose ethanol production wastewater |
-
2016
- 2016-12-28 CN CN201611237533.7A patent/CN106755125B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174588A (en) * | 2011-03-04 | 2011-09-07 | 南阳天冠生物发酵有限公司 | Methane production method by adopting cellulosic ethanol byproduct as main raw material |
| CN102910777A (en) * | 2011-08-01 | 2013-02-06 | 中国石油化工股份有限公司 | Treatment method for wastewater generated in cellulosic ethanol production |
| CN103102012A (en) * | 2011-11-10 | 2013-05-15 | 中国石油化工股份有限公司 | Anaerobic biochemistry treatment method for cellulose ethanol wastewater |
| CN106746162A (en) * | 2015-11-19 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of processing method of cellulose ethanol production wastewater |
Non-Patent Citations (2)
| Title |
|---|
| 李娟: "小麦秸秆调节猪粪碳氮比对产沼气的影响", 《中国沼气》 * |
| 陈广银: "碱处理对秸秆厌氧消化的影响", 《环境科学》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110452936A (en) * | 2019-08-06 | 2019-11-15 | 华中农业大学 | The method of vacuum cavitations kitchen waste water anaerobic fermentation raising volatile fat acid yield |
| CN111732468A (en) * | 2020-07-01 | 2020-10-02 | 上海农乐生物制品股份有限公司 | Use of corn by-products in fecal treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106755125B (en) | 2020-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101765663B (en) | Biomass pretreatment | |
| US8772427B2 (en) | Continuous counter-current organosolv processing of lignocellulosic feedstocks | |
| Tian et al. | Anaerobic digestion for treatment of stillage from cellulosic bioethanol production | |
| CN104540957A (en) | Compositions and methods for biomass liquefaction | |
| CN102676588A (en) | Method and device for preparing biogas by utilizing traditional Chinese medicine (TCM) dregs | |
| CN102010882A (en) | Method for performing lignocelluloses raw material high-temperature diluted acid pretreatment by using extremely small amount of water | |
| Yu et al. | Effect of microwave/hydrothermal combined ionic liquid pretreatment on straw: Rumen anaerobic fermentation and enzyme hydrolysis | |
| CN108070621A (en) | A kind of method of comprehensive utilization of maize straw | |
| CN110643640B (en) | Method for producing biogas by extracting dioscorea composita saponin waste liquid and waste residue by using aluminum trichloride | |
| CN102168113B (en) | Method for producing ethanol by using straw lignocellulose raw materials | |
| CN115354064A (en) | Method for producing medium-chain fatty acid by two-phase partition of anaerobic dry fermentation | |
| CN115029393A (en) | DES additive-based method for producing medium-chain fatty acid from straw | |
| CN105713931A (en) | Method for producing alcohol through continuous enzymolysis and fermentation of lignocellulose | |
| CN106755125A (en) | A kind of cellulose ethanol draff liquid and the processing method of agricultural wastes mixed fermentation | |
| CN101891510A (en) | Method for preparing commercial organic fertilizer from yam vinasse | |
| CN101532038A (en) | Method for preparing fuel ethanol by plant straws | |
| CN103923949A (en) | Method and apparatus for producing ethanol through synchronous saccharification and fermentation of lignocellulose | |
| Vintila et al. | Simultaneous hydrolysis and fermentation of lignocellulose versus separated hydrolysis and fermentation for ethanol production | |
| CN109402196A (en) | A method of biological liquid fuel is produced using biomass | |
| CN202595133U (en) | Device for producing methane by utilizing Chinese medicament dregs | |
| CN113636536B (en) | Method for co-producing biomethane by hydrothermal carbonization of wood fiber wastes | |
| CN103773812A (en) | Method for preparing fuel alcohol from acorns and resource utilization of acorns | |
| CN105779528A (en) | Lignocellulose continuous enzymatic hydrolysis and synchronous saccharification-fermentation method | |
| CN110564779A (en) | Method for co-producing biogas by fermenting ethanol with bagasse-molasses mixed raw material | |
| CN105624209A (en) | Method for producing butanol by high-temperature enzymolysis and fermentation of lignocellulose |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |