CN107022576A - A kind of biogas fermentation function compound accelerant and preparation method thereof - Google Patents
A kind of biogas fermentation function compound accelerant and preparation method thereof Download PDFInfo
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- CN107022576A CN107022576A CN201710385714.2A CN201710385714A CN107022576A CN 107022576 A CN107022576 A CN 107022576A CN 201710385714 A CN201710385714 A CN 201710385714A CN 107022576 A CN107022576 A CN 107022576A
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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Abstract
The invention discloses a kind of biogas fermentation function compound accelerant and preparation method thereof, including preparing vermiculite controlled micro crystallization powder, it is that 2.8~4 parts of aloe Carbon Materials, 1.2~2 parts of complex microbial inoculums, 0.3~1.2 part of trace element, 1.2~2 portions of organic additives and 4~6 parts of enzyme accelerator are well mixed at normal temperatures with controlled micro crystallization powder by mass fraction, produces biogas fermentation function compound accelerant.Fermented using biogas fermentation with function compound accelerant, feces of livestock and poultry combination agriculture and forestry organic waste material or kitchen garbage are as fermentation raw material, then add inoculum and compound accelerant, and the total solids content of control anaerobic fermentation is fermented.The biogas fermentation improves gas production more than 50% with function compound accelerant, shortens the fermentation starting time, easy to use.
Description
Technical field
The invention belongs to technical field of methane fermentation, be related to a kind of functional additive formula for promoting biogas fermentation and its
Preparation method.
Background technology
China is animal husbandry big country, raises live pig 1,200,000,000, ox 1.5 hundred million, sheep 5.7 hundred million, poultry 17,600,000,000 in year.Closely
Nian Lai, although large-scale cultivation ratio is constantly lifted, but overall manufacturing level is still relatively low, and free-ranging ratio is still higher, according to
The survey of State Environmental Protection Administration in 2016, China's livestock and poultry breeding industry about produces 3,800,000,000 tons of feces of livestock and poultry every year, and its is effective
Handling rate is less than 50%.On the other hand, the fast development of China's urbanization result in steeply rising for urban population, thus also draw
The aggravation of municipal pollution is played.In May, 2014, member of Chinese Academy of Engineering, China Environmental Science Research Institute president Meng Wei tables in Beijing
Show, Chinese total amount of sewage discharge is considerably beyond environmental carrying capacity, and only COD (COD) is just more beyond environmental carrying capacity three times.State
The research of Environmental Protection Administration of family thinks that the COD bearing capacities of water environment in China are 740.9 ten thousand tons, but national first time investigation of pollution sources
It was found that, COD actual emissions are 3028.96 ten thousand tons.However, perhaps reaching its maturity for anaerobic fermentation technology can effectively solve the problem that this
The pollution problem of two kinds of discarded objects.Feces of livestock and poultry is as a kind of excellent fermentation substrate by lot of domestic and foreign pertinent literature report
Road, and sewage participates in anaerobic fermentation with the identity of inoculum and has also enjoyed accreditation.By anaerobic fermentation technology, it can integrate
These discarded objects of the utilization of effect, turn waste into wealth, and realize that the recycling of discarded object is recycled, have important practical significance.
Anaerobic fermentation is a kind of technology of the processing organic matter of multi-cultur es cooperation, and it can pass through microorganism under anaerobic
Digestion by the organic matter transformation in discarded object be biogas.Fermentation process is broadly divided into three phases, is hydrolysis rank respectively
Section, souring stage and methane phase stage.In hydrolysis stage, macromolecular organic matter is hydrolyzed zymogenous bacteria and resolves into small molecule；With
Small molecule machine matter completes second stage by hydrogen-producing acetogenic bacteria using acetic acid, hydrogen and volatile fatty acid etc. is produced afterwards；Most
Methanogen is translated into methane afterwards.Anaerobic fermentation whole process needs suitable temperature and neutral acid-base value, and fermentation
The carbon-nitrogen ratio and micronutrient levels of substrate all have the influence of key to the success or failure of fermentation.
Marsh gas fermentation processes are substantially the interaction and energy conversion process between microorganism.The growth of microorganism and numerous
Growing needs certain nutriment, tri- kinds of elements of C, N, P nutriment that exactly microorganism growth is needed most.C element and N element
Fermentation substrate mainly is from, generally containing abundant C element in biomass castoff, and N is first in human and animal excreta
It is plain then relatively more enrich.Therefore either C elements or N elements lack during the fermentation, it is only necessary to which substrate composition is adjusted
It is whole to solve.In general, a suitable C/N ratios are needed in marsh gas fermentation processes, in the range of 10-30：1, most
Good scope is in 20-25：1.For the plain nutrition of P, then need to be made up by way of external source is added, at present supplement P elements
Mode mainly to add based on phosphate fertilizer.However, the substantial amounts of calcium magnesium element content contained in phosphate fertilizer is perhaps to micro- life of fermenting
The growth and breeding of thing produce inhibitory action, so as to influence the yield of biogas.
In addition, the problem of biogas fermentation engineering still suffers from some generalities at present.For example, 1) biogas fermentation is basic in the winter time
It is not normally functioning, due to the activity for the microorganism that arctic weather is limited, causes aerogenesis to be stagnated.2) fermentation period is longer, production
Gas peak period is shorter.3) fermentation substrate utilization rate is relatively low, and the biogas residue and biogas liquid not digested fully is easily caused to environment
Secondary pollution.Research shows：Suitable additive can promote utilization of the microorganism to fermentation substrate, shorten fermentation period, carry
High biogas output.When providing required nutrient into fermentation tank, the growth and breeding of microorganism can be promoted, so as to strengthen
Utilization of the microorganism to organic matter.Further study showed that：Addition adsorbent can also improve aerogenesis effect.Main cause is to inhale
Attached dose is got up germs collect, increases microbe density, while can keep growing microorganism favourable environment, so as to allow micro-
Biological preferably degradation of organic substances matter, accelerates the consumption of volatile acid, improves gas production.
Therefore, a kind of containing nutrient, with loose and porous structure feature accelerator is added, for significantly improving
The environment of fermentation and the digestion power of lifting microorganism, promote organic matter faster, more thoroughly can be decomposed and utilize, carry
High biogas output, shortening fermentation period turns into current this area technical problem urgently to be resolved hurrily.
The content of the invention
To solve drawbacks described above present in prior art, it is an object of the invention to provide a kind of biogas fermentation function
Property accelerator.The accelerator can significantly improve biogas anaerobic fermentation environment, biogas output is substantially increased, fermentation efficiency is carried
High, organic matter is utilized effectively, and realizes the recycling of discarded object.
The present invention is realized by following technical proposals.
A kind of biogas fermentation function compound accelerant, includes the raw material of following mass fractions：
Preferably, the aloe Carbon Materials be by aloe skin discarded object carbonized through hydro-thermal after obtained carbonizing production, bag
Include following processes：
Take a certain amount of aloe skin dry powder raw material, by its with deionized water using mass ratio as 1:8 ratio is mixed, institute
Obtain mixed solution to pour into hydrothermal reaction kettle, then hydrothermal reaction kettle is placed in baking oven, heat 20h under conditions of 200 DEG C, obtain
Carbonaceous mixture is obtained, the mixture is put into baking oven and is dried, 12h is incubated at 105 DEG C, aloe skin charing is finally obtained
Product.
Preferably, the complex microbial inoculum include hydrolytic bacteria, hydrogen-producing bacteria, production acetic acid bacteria, methanogen,
One or more in cellulose-decomposing bacterium, nitrobacteria, lactic acid bacteria, saccharomycete or photosynthetic bacteria strain；All strains pass through
Computer-aided screening, spread cultivation and obtain.
Preferably, the activator is ethylene glycol, phosphoric acid propane diamine or oxyammonia.
Preferably, the trace element is Fe, Co or Ni.
Preferably, the organic additive includes the raw material of following mass fractions：
0.4~0.8 part of urea；
0.3~0.6 part of phosphate fertilizer；
0.5~0.8 part of citric acid；
The phosphate fertilizer includes the raw material of following mass fractions：
0.2~0.4 part of ground phosphate rock；
0.1~0.2 part of fishbone dust.
Preferably, the enzyme accelerator includes the raw material of following mass fractions：
The above-mentioned biogas fermentation preparation method of function compound accelerant of the present invention, comprises the steps：
1) vermiculite controlled micro crystallization powder is prepared：
Mass fraction is placed in disintegrating apparatus for 3.75~5 parts of vermiculites and crushed, then the powder after crushing is placed in
It is ground in mortar, and 0.3~0.45 part of activator is added in milling apparatus, is carried out super-fine processing and be prepared into particle mean size
Up to more than 400 mesh, controlled micro crystallization powder is obtained, is packaged spare；
2) feature accelerator is prepared：
By mass fraction be 2.8~4 parts of aloe Carbon Materials, 1.2~2 parts of complex microbial inoculums, 0.3~1.2 part it is micro
Element, 1.2~2 portions of organic additives and 4~6 parts of enzyme accelerator and step 1) controlled micro crystallization powder is well mixed at normal temperatures,
Produce biogas fermentation function compound accelerant.
The present invention correspondingly gives a kind of method fermented using biogas fermentation with function compound accelerant, including
Following step：
200~230 parts of agriculture and forestry organic waste materials are combined as 60~80 parts of feces of livestock and poultry using mass fraction or kitchen garbage is used as hair
Ferment raw material, then 111~132 parts of inoculums and 10~15 parts of compound accelerants are added, fermented feed liquid is sufficiently stirred for, controlled
The total solids content of anaerobic fermentation is 8%~10%, is fermented at 20~40 DEG C.
Preferably, the feces of livestock and poultry is one kind in cow dung, pig manure, chicken manure；The inoculum is at municipal sewage
Manage the anaerobic sludge of factory；The mass ratio of the fermentation raw material and inoculum is 7:3.
The present invention is using natural minerals as primary raw material, with the phase such as traditional enzyme, inorganic salts, organic matter and other inorganic matters
Compare, innovative point of the invention is exactly to add natural minerals to be prepared into controlled micro crystallization miberal powder into biogas fermentation material formula.This hair
It is bright that mineral are ground to after certain fineness on the premise of accelerator is added, activate nutrient therein.Opened in biogas fermentation
When dynamic, addition controlled micro crystallization miberal powder is conducive to the propagation of microorganism, improves system biological amount, is conducive to improving the buffer capacity of reactor
Power, can promote the metabolism of marsh gas fermenting system microorganism, improve the functioning efficiency in anaerobic fermentation each stage, so that more effectively
Using substrate, biogas output is finally improved.
The method have the characteristics that：
1) gas production more than 50% is improved, shortens the fermentation starting time, it is easy to use.
2) preparation technology flow is simple, operate easy, good effect, small investment, pollution-free etc..
3) it is biogas fermentation work by the way of the additive based on addition mineral matter is as biogas function and service accelerator
Industry production opens a new technological approaches, is with a wide range of applications, is that the practical application of scale biogas production is carried
For powerful technical support.
Embodiment
In order that the technological means implemented of the present invention understands understandable, with reference to specific embodiment, this hair is expanded on further
It is bright.
1) vermiculite controlled micro crystallization powder is prepared：
Mass fraction is placed in disintegrating apparatus for 3.75~5g vermiculite and crushed, then the powder after crushing is placed in
It is ground in mortar, and 0.3~0.45g activators is added in milling apparatus, is carried out super-fine processing, utilize mechanical force and chemical
And the mineral are prepared into particle mean size and reach more than 400 mesh product by the mechanical shock effect of high shear, finally give one kind
Controlled micro crystallization powder, and packaged spare.
Wherein, above-mentioned activator uses triethanolamine, phosphoric acid propane diamine or oxyammonia.
2) feature accelerator is prepared：
Formula according to every liter of fermented feed liquid 15g is：
By above-mentioned substance with corresponding addition and step 1) prepare controlled micro crystallization powder be well mixed at normal temperatures, produce
Biogas fermentation function compound accelerant.
In above-mentioned functions accelerator：Aloe Carbon Materials are aloe skin wastes hydrothermal carbonizing production, are prepared as follows：
Take a certain amount of aloe skin dry powder raw material, by its with deionized water using mass ratio as 1:8 ratio is mixed, institute
Obtain mixed solution to pour into hydrothermal reaction kettle, then hydrothermal reaction kettle is placed in baking oven, heat 20h under conditions of 200 DEG C, obtain
Carbonaceous mixture is obtained, the mixture is put into baking oven and is dried, 12h is incubated at 105 DEG C, aloe skin charing is finally obtained
Product.
Wherein, complex microbial inoculum is hydrolytic bacteria, hydrogen-producing bacteria, production acetic acid bacteria, methanogen, cellulose decomposition
Bacterium, nitrobacteria, lactic acid bacteria, saccharomycete or photosynthetic bacteria；All strains by computer-aided screening, spread cultivation and obtain.
Trace element is Fe, Co, Ni.
Organic additive is urea, phosphate fertilizer or citric acid；Wherein phosphate fertilizer includes 0.2~0.4 part of ground phosphate rock；Fishbone dust 0.1
~0.2 part.
Enzyme accelerator is protease, cellulase, lipase, amylase or nuclease.Enzyme accelerator includes protease
0.5~1.5 part；1~2 part of cellulase；0.5~1 part of lipase；1~1.2 part of amylase；0.5~1 part of nuclease.
3) biogas fermentation is carried out using feature accelerator：
200~230 parts of agriculture and forestry organic waste materials are combined as 60~80 parts of feces of livestock and poultry using mass fraction or kitchen garbage is used as hair
Ferment raw material, then 111~132 parts of inoculums and 10~15 parts of compound accelerants are added, fermented feed liquid is sufficiently stirred for, controlled
The total solids content of anaerobic fermentation is 8%~10%, is fermented at 20~40 DEG C.
Wherein, feces of livestock and poultry is one kind in cow dung, pig manure, chicken manure；The inoculum is detested for municipal sewage plant
Oxygen sludge；The mass ratio of the fermentation raw material and inoculum is 7:3.
According to above-mentioned steps, further illustrate that the difference of catalyst fermentation methane of the present invention is former below by embodiment 1-8
Expect component.
Embodiment 1
1) vermiculite controlled micro crystallization powder is prepared：
3.75 parts of vermiculite is crushed, ground, and adds 0.35 part of ethylene glycol, particle mean size is prepared into through super-fine processing and reaches
More than 400 mesh, controlled micro crystallization powder is obtained, is packaged spare；
2) feature accelerator is prepared：
It is 3 portions of aloe Carbon Materials, 1.5 portions of hydrolytic bacterias, 1 portion of trace element Fe, 1.6 portions of organic additives by mass fraction
(0.4 part of urea, phosphate fertilizer include 0.6 part, 0.6 part of citric acid) and 5 parts of enzyme accelerator (1.5 parts of protease, 1 part of cellulase,
0.5 part of lipase, 1 part of amylase, 1 part of nuclease) with step 1) controlled micro crystallization powder is well mixed at normal temperatures, produces biogas fermentation
Use function compound accelerant.
3) biogas fermentation is carried out using feature accelerator：
230 parts of agriculture and forestry organic waste materials or kitchen garbage are combined as fermentation raw material by 60 parts of cow dungs of mass fraction, then are added
The anaerobic sludge and 15 parts of compound accelerants of 124.3 parts of municipal sewage plants are sufficiently stirred for fermented feed liquid, and control is detested
The total solids content of aerobe fermentation is 10%, is fermented at 30 DEG C.Accumulation biogas output is 414mL/g VS.
Embodiment 2
1) vermiculite controlled micro crystallization powder is prepared：
4.2 parts of vermiculite is crushed, ground, and adds 0.3 part of ethylene glycol, particle mean size is prepared into through super-fine processing and reaches
More than 400 mesh, controlled micro crystallization powder is obtained, is packaged spare；
2) feature accelerator is prepared：
By mass fraction be 2.8 parts of aloe Carbon Materials, 1.2 parts of hydrogen-producing bacterias, 1.2 parts of trace element Co, 1.6 parts organic add
Plus agent (0.8 part of urea, phosphate fertilizer include 0.3 part, 0.5 part of citric acid) and 5 parts of enzyme accelerator (.5 parts of proteinase-10, cellulases
2 parts, 1 part of lipase, 1 part of amylase, 0.5 part of nuclease) with step 1) controlled micro crystallization powder is well mixed at normal temperatures, produces biogas
Function compound accelerant is used in fermentation.
3) biogas fermentation is carried out using feature accelerator：
200 parts of agriculture and forestry organic waste materials or kitchen garbage are combined as fermentation raw material by 60 parts of pig manures of mass fraction, then are added
The anaerobic sludge inoculum and 15 parts of compound accelerants of 111.4 parts of municipal sewage plants are sufficiently stirred for fermented feed liquid,
The total solids content for controlling anaerobic fermentation is 8%, is fermented at 20 DEG C.Accumulation biogas output is 421mL/g VS.
Embodiment 3
1) vermiculite controlled micro crystallization powder is prepared：
5 parts of vermiculite is crushed, ground, and adds 0.4 part of phosphoric acid propane diamine, particle mean size is prepared into through super-fine processing and reaches
More than 400 mesh, controlled micro crystallization powder is obtained, is packaged spare；
2) feature accelerator is prepared：
It is 3 parts of aloe Carbon Materials, 2 parts of production acetic acid bacterias, 0.3 part of trace element Ni, 1.6 parts of organic additions by mass fraction
Agent (0.4 part of urea, phosphate fertilizer include 0.6 part, 0.6 part of citric acid) and 6 parts of enzyme accelerator (1.5 parts of protease, cellulases 2
Part, 0.5 part of lipase, 1 part of amylase, 1 part of nuclease) with step 1) controlled micro crystallization powder is well mixed at normal temperatures, produces biogas
Function compound accelerant is used in fermentation.
3) biogas fermentation is carried out using feature accelerator：
220 parts of agriculture and forestry organic waste materials or kitchen garbage are combined as fermentation raw material by 80 parts of chicken manures of mass fraction, then are added
The anaerobic sludge inoculum and 15 parts of compound accelerants of 128.6 parts of municipal sewage plants are sufficiently stirred for fermented feed liquid,
The total solids content for controlling anaerobic fermentation is 9%, is fermented at 30 DEG C.Accumulation biogas output is 430mL/g VS.
Embodiment 4
1) vermiculite controlled micro crystallization powder is prepared：
4.5 parts of vermiculite is crushed, ground, and adds 0.3 part of oxyammonia, particle mean size is prepared into through super-fine processing and reaches
More than 400 mesh, controlled micro crystallization powder is obtained, is packaged spare；
2) feature accelerator is prepared：
It is 4 parts of aloe Carbon Materials, 1.2 parts of methanogens, 1.2 parts of trace element Ni, 1.2 parts of organic additions by mass fraction
Agent (0.4 part of urea, phosphate fertilizer include 0.3 part, 0.5 part of citric acid) and 4 parts of enzyme accelerator (1 part of protease, 1 part of cellulase,
0.5 part of lipase, 1 part of amylase, 0.5 part of nuclease) with step 1) controlled micro crystallization powder is well mixed at normal temperatures, produces biogas hair
Ferment function compound accelerant.
3) biogas fermentation is carried out using feature accelerator：
230 parts of agriculture and forestry organic waste materials or kitchen garbage are combined as fermentation raw material by 80 parts of cow dungs of mass fraction, then are added
The anaerobic sludge inoculum and 10 parts of compound accelerants of 132.8 parts of municipal sewage plants are sufficiently stirred for fermented feed liquid,
The total solids content for controlling anaerobic fermentation is 9%, is fermented at 20 DEG C.Accumulation biogas output is 404mL/g VS.
Embodiment 5
1) vermiculite controlled micro crystallization powder is prepared：
3.75 parts of vermiculite is crushed, ground, and adds 0.35 part of phosphoric acid propane diamine, average grain is prepared into through super-fine processing
Spend up to more than 400 mesh, obtain controlled micro crystallization powder, package spare；
2) feature accelerator is prepared：
By mass fraction be 3.2 parts of aloe Carbon Materials, 1.2 parts of cellulose-decomposing bacteriums, 1.2 parts of trace element Fe, 2 parts it is organic
Additive (0.6 part of urea, phosphate fertilizer include 0.6 part, 0.8 part of citric acid) and 5 parts of enzyme accelerator (1 part of protease, cellulases
1.5 parts, 0.5 part of lipase, 1.2 parts of amylase, 0.8 part of nuclease) with step 1) controlled micro crystallization powder is well mixed at normal temperatures, i.e.,
Obtain biogas fermentation function compound accelerant.
3) biogas fermentation is carried out using feature accelerator：
210 parts of agriculture and forestry organic waste materials or kitchen garbage are combined as fermentation raw material by 60 parts of cow dungs of mass fraction, then are added
The anaerobic sludge inoculum and 10 parts of compound accelerants of 115.7 parts of municipal sewage plants are sufficiently stirred for fermented feed liquid,
The total solids content for controlling anaerobic fermentation is 10%, is fermented at 40 DEG C.Accumulation biogas output is 449mL/g VS.
Embodiment 6
1) vermiculite controlled micro crystallization powder is prepared：
4 parts of vermiculite is crushed, ground, and adds 0.45 part of phosphoric acid propane diamine, particle mean size is prepared into through super-fine processing
Up to more than 400 mesh, controlled micro crystallization powder is obtained, is packaged spare；
2) feature accelerator is prepared：
It is 4 parts of aloe Carbon Materials, 1.5 parts of nitrobacterias, 0.6 part of trace element Fe, 1.6 parts of organic additions by mass fraction
Agent (0.4 part of urea, phosphate fertilizer include 0.6 part, 0.6 part of citric acid) and 5 parts of enzyme accelerator (1.5 parts of protease, cellulases 1
Part, 0.5 part of lipase, 1 part of amylase, 1 part of nuclease) with step 1) controlled micro crystallization powder is well mixed at normal temperatures, produces biogas
Function compound accelerant is used in fermentation.
3) biogas fermentation is carried out using feature accelerator：
220 parts of agriculture and forestry organic waste materials or kitchen garbage are combined as fermentation raw material by 80 parts of cow dungs of mass fraction, then are added
The anaerobic sludge inoculum and 15 parts of compound accelerants of 128.6 parts of municipal sewage plants are sufficiently stirred for fermented feed liquid,
The total solids content for controlling anaerobic fermentation is 8%~10%, is fermented at 30 DEG C.Accumulation biogas output is 452mL/g
VS。
Embodiment 7
1) vermiculite controlled micro crystallization powder is prepared：
5 parts of vermiculite is crushed, ground, and adds 0.4 part of ethylene glycol, particle mean size is prepared into up to 400 through super-fine processing
More than mesh, controlled micro crystallization powder is obtained, is packaged spare；
2) feature accelerator is prepared：
It is 2.8 parts of aloe Carbon Materials ,+0.6 part of saccharomycete of 0.6 part of lactic acid bacteria, 0.9 part of trace element Fe, 2 by mass fraction
Portion organic additive (0.7 part of urea, phosphate fertilizer include 0.5 part, 0.8 part of citric acid) and 5 parts of enzyme accelerator (1.5 parts of protease,
1 part of cellulase, 0.5 part of lipase, 1 part of amylase, 1 part of nuclease) with step 1) controlled micro crystallization powder is well mixed at normal temperatures,
Produce biogas fermentation function compound accelerant.
3) biogas fermentation is carried out using feature accelerator：
230 parts of agriculture and forestry organic waste materials or kitchen garbage are combined as fermentation raw material by 70 parts of cow dungs of mass fraction, then are added
The anaerobic sludge inoculum and 15 parts of compound accelerants of 128.6 parts of municipal sewage plants are sufficiently stirred for fermented feed liquid,
The total solids content for controlling anaerobic fermentation is 10%, is fermented at 40 DEG C.Accumulation biogas output is 460mL/g VS.
Embodiment 8
1) vermiculite controlled micro crystallization powder is prepared：
3.75g vermiculite is crushed, ground, and adds 0.35g ethylene glycol, being prepared into particle mean size through super-fine processing reaches
More than 400 mesh, controlled micro crystallization powder is obtained, is packaged spare；
2) feature accelerator is prepared：
It is 2.8 portions of aloe Carbon Materials, 1 portion of photosynthetic bacteria, 0.3 portion of trace element Fe, 1.6 portions of organic additives by mass fraction
(0.4 part of urea, phosphate fertilizer include 0.6 part, 0.6 part of citric acid) and 5 parts of enzyme accelerator (1.5 parts of protease, 1 part of cellulase,
0.5 part of lipase, 1 part of amylase, 1 part of nuclease) with step 1) controlled micro crystallization powder is well mixed at normal temperatures, produces biogas fermentation
Use function compound accelerant.
3) biogas fermentation is carried out using feature accelerator：
210 parts of agriculture and forestry organic waste materials or kitchen garbage are combined as fermentation raw material by 70 parts of pig manures of mass fraction, then are added
The anaerobic sludge inoculum and 15 parts of compound accelerants of 120 parts of municipal sewage plants are sufficiently stirred for fermented feed liquid, control
The total solids content of anaerobic fermentation processed is 8%, is fermented at 20 DEG C.Accumulation biogas output is 482mL/g VS.
Comparative example 1
Using single cow dung as fermentation substrate, anaerobic sludge is that inoculum carries out biogas fermentation.
Using single cow dung as fermentation substrate, addition is 280 parts, and the anaerobic sludge of municipal sewage plant is inoculum,
Addition is 120 parts, and the total solids content for controlling anaerobic fermentation is 10%, fermented feed liquid is sufficiently stirred for, at 40 DEG C
Fermented.Accumulation biogas output is 265mL/g VS.
Comparative example 2
Using cow dung and aloe skin discarded object as fermentation substrate, anaerobic sludge is that inoculum is fermented.
Using cow dung and aloe skin discarded object as fermentation substrate, two kinds of raw material adding proportions are 1:3, municipal sewage plant
Anaerobic sludge is inoculum, and addition is 105 parts, and the total solids content for controlling anaerobic fermentation is 8%, and fermented feed liquid is filled
Divide stirring, fermented at 30 DEG C.Accumulation biogas output is 303mL/g VS.
Comparative example 3
Using pig manure and aloe skin discarded object as fermentation substrate, add aloe skin hydro-thermal carbide and fermented.
Using pig manure and aloe skin discarded object as fermentation substrate, two kinds of raw material adding proportions are 1:3, municipal sewage plant
Anaerobic sludge is inoculum, and addition is 130 parts, adds 4 parts of aloe skin hydro-thermal carbide, and the total solid of control anaerobic fermentation contains
Measure as 10%, fermented feed liquid is sufficiently stirred for, fermented at 35 DEG C.Accumulation biogas output is 310mL/g VS.
The performance test results contrast of embodiment and comparative example is shown in Table 1.
The performance comparison of table 1
As it can be seen from table 1 the present invention prepares biogas output feature accelerator of good performance, its accumulation biogas output
Not less than 404mL/g VS, VS clearances are not less than 65.3%, and COD degradation rate is not less than 58.6%, and biogas output is not less than 404
(mL/g VS).As can be seen from Table 1, the prepared biogas fermentation function compound accelerant of the present invention, which possesses, significantly improves fermentation
Environment and lifting microorganism digestion power, promote organic matter faster, more thoroughly can be decomposed and utilize, improve natural pond
Gas yield, shortens fermentation period, is a kind of processing characteristics good biogas fermentation function compound accelerant.
From above-described embodiment as can be seen that under identical experiment condition, the biogas fermentations different by contrasting are added
Agent understands that raw material sources of the present invention are extensive, cheap and easy to get, with function compound accelerant is practical as biogas fermentation.
A kind of biogas fermentation function compound accelerant prepared by the present invention is advantageous in that：
1) using discarded object and mineral material as main nutriment, effective utilization effectively both had been carried out to discarded object, together
When improve the efficiency of biogas fermentation.
2) vermiculite controlled micro crystallization powder and charcoal are with the addition of in the present invention, and it has to the heavy metal in fermented feed liquid inhales
Attached effect, reduces the probability of fermentation failure.The pH of fermented feed liquid is set to maintain neutral or alkalescent in addition, adding activator,
Make yeasting more excellent.
3) addition complex microbial inoculum can speed up the startup time of fermentation, promotes the growth and breeding of methanogen, makes
Whole fermentation period is effectively shortened.
4) feature compound accelerant is used, the utilization rate of raw material is improved, accelerates the reaction rate of fermentation, so that
Accumulation biogas output is greatly improved.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.
Claims (10)
1. a kind of biogas fermentation function compound accelerant, it is characterised in that include the raw material of following mass fractions：
2. a kind of biogas fermentation function compound accelerant according to claim 1, it is characterised in that the aloe raw material of wood-charcoal
Material be by aloe skin discarded object carbonized through hydro-thermal after obtained carbonizing production, including following processes：
Take a certain amount of aloe skin dry powder raw material, by its with deionized water using mass ratio as 1:8 ratio is mixed, and gained is mixed
Close solution to pour into hydrothermal reaction kettle, then hydrothermal reaction kettle is placed in baking oven, 20h is heated under conditions of 200 DEG C, obtain charcoal
Matter mixture, the mixture is put into baking oven and is dried, and 12h is incubated at 105 DEG C, finally obtains aloe skin charing production
Thing.
3. a kind of biogas fermentation function compound accelerant according to claim 1, it is characterised in that the microorganism is answered
Close microbial inoculum include hydrolytic bacteria, hydrogen-producing bacteria, production acetic acid bacteria, methanogen, cellulose-decomposing bacterium, nitrobacteria, lactic acid bacteria,
One or more in saccharomycete or photosynthetic bacteria strain；All strains by computer-aided screening, spread cultivation and obtain.
4. a kind of biogas fermentation function compound accelerant according to claim 1, it is characterised in that the activator is
Ethylene glycol, phosphoric acid propane diamine or oxyammonia.
5. a kind of biogas fermentation function compound accelerant according to claim 1, it is characterised in that the trace element
For Fe, Co or Ni.
6. a kind of biogas fermentation function compound accelerant according to claim 1, it is characterised in that organic addition
Agent includes the raw material of following mass fractions：
0.4~0.8 part of urea；
0.3~0.6 part of phosphate fertilizer；
0.5~0.8 part of citric acid；
The phosphate fertilizer includes the raw material of following mass fractions：
0.2~0.4 part of ground phosphate rock；
0.1~0.2 part of fishbone dust.
7. a kind of biogas fermentation function compound accelerant according to claim 1, it is characterised in that the enzyme promotes
Agent includes the raw material of following mass fractions：
8. a kind of biogas fermentation preparation method of function compound accelerant, it is characterised in that comprise the steps：
1) vermiculite controlled micro crystallization powder is prepared：
Mass fraction is placed in disintegrating apparatus for 3.75~5 parts of vermiculite and crushed, then the powder after crushing is placed in ground
It is ground in alms bowl, and 0.3~0.45 part of activator is added in milling apparatus, is carried out super-fine processing and be prepared into particle mean size and reach
More than 400 mesh, controlled micro crystallization powder is obtained, is packaged spare；
2) feature accelerator is prepared：
By mass fraction be 2.8~4 parts of aloe Carbon Materials, 1.2~2 parts of complex microbial inoculums, 0.3~1.2 part of trace element,
1.2~2 portions of organic additives and 4~6 parts of enzyme accelerator and step 1) controlled micro crystallization powder is well mixed at normal temperatures, produces natural pond
Function compound accelerant is used in gas fermentation.
9. a kind of method fermented using biogas fermentation with function compound accelerant, it is characterised in that comprise the steps：
200~230 parts of agriculture and forestry organic waste materials are combined as 60~80 parts of feces of livestock and poultry using mass fraction or kitchen garbage is used as proferment
Material, then 111~132 parts of inoculums and 10~15 parts of compound accelerants are added, fermented feed liquid is sufficiently stirred for, anaerobism is controlled
The total solids content of fermentation is 8%~10%, is fermented at 20~40 DEG C.
10. the method according to claim 9 fermented using biogas fermentation with function compound accelerant, its feature is existed
In the feces of livestock and poultry is one kind in cow dung, pig manure, chicken manure；The inoculum is the anaerobic sludge of municipal sewage plant；
The mass ratio of the fermentation raw material and inoculum is 7:3.
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| CN107674908A (en) * | 2017-11-30 | 2018-02-09 | 江苏中科重工股份有限公司 | A kind of accelerator for biogas fermentation |
| CN109851446A (en) * | 2018-12-17 | 2019-06-07 | 西安建筑科技大学 | A kind of anaerobic fermentation phosphorous compound additive and fermentation process |
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| CN107022576B (en) | 2020-10-16 |
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