CN207047224U - A kind of biogas microalgae combines ecological treatment system - Google Patents
A kind of biogas microalgae combines ecological treatment system Download PDFInfo
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- CN207047224U CN207047224U CN201720740588.3U CN201720740588U CN207047224U CN 207047224 U CN207047224 U CN 207047224U CN 201720740588 U CN201720740588 U CN 201720740588U CN 207047224 U CN207047224 U CN 207047224U
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Abstract
A kind of biogas microalgae joint ecological treatment system is the utility model is related to, belongs to ecological, environmental protective technical field.Biogas microalgae joint ecological treatment system provided by the utility model includes marsh gas treating system and micro algae growth propagating system；The marsh gas treating system includes methane-generating pit (4), and the micro algae growth propagating system includes micro algae growth equipment for breeding (16)；The micro algae growth equipment for breeding includes flue gas microalgae photosynthesizer；Biogas caused by the methane-generating pit (4) and biogas slurry input micro algae growth equipment for breeding (16).The product that the utility model is produced by ecological technique is used for agricultural, and can not spray insecticide to fertilize, production organic agronomic crop, so as to build a debirs processing and ecological organic agricultural system.It is good in economic efficiency and system footprint area provided by the utility model is small, biogas slurry treatment efficiency high.
Description
Technical field
It the utility model is related to ecological, environmental protective technical field, and in particular to a kind of biogas-microalgae joint ecological treatment system.
Background technology
Ecological Civilization Construction has become the development strategy of country.Energy-saving and emission-reduction, air treating, water environment treatment, waste
Handle, have become national development strategy using clean energy resource, edible ecological food, enjoyment blue montains and green waters and fresh air
With the ideal of life of the general common people.
Biogas is as caused by methane backeria, and it is a kind of high-quality clean energy resource.Methane backeria belongs to microorganism, early in 3,500,000,000
Nian Qian, methane backeria just generate, and it is the Nature to handle the natural technology of waste.In modern society, people's methane
Bacterium handles debirs, such as dung polluted water dirt, municipal sludge, stalk, kitchen garbage and other industrial and agricultural wastes.Biogas it
On the one hand clean energy resource can be produced --- biogas, on the other hand it can produce organic fertilizer.Therefore, biogas is protected in environment
Shield, and played a very important role in industrial or agricultural industry.
Although the history of existing more than the 60 years large-scale application biogas in China, because great lack also be present in biogas technology
Fall into, including fermentation period is long, energy conversion efficiency is low, factor of created gase is low, especially because biomass is converted into after biogas, biogas
The microorganism such as remaining substantial amounts of ammonia, nitrogen, phosphorus and salt can not further digest in pond.As these elements constantly increase, biogas
Pond aerogenesis speed significantly declines.Particularly, traditional sewage aerobic processing falls within microbiological treatment technology, ammonia, nitrogen, phosphorus and
The thing that these microorganisms such as salt can not digest, aerobic microbiological can not thoroughly be digested to these materials, microorganism
Growth and breeding plays inhibitory action, causes biogas slurry treatment very big difficulty to be present.Under normal conditions, using aerobic technical finesse
Biogas slurry, BOD degradation rate is about 50%, and COD degradation rate is just lower.BOD and COD value plus biogas slurry is very high, reaches
To 10, more than 000, even if still very high using BOD the and COD contents in the later biogas slurry of aerobic technical finesse, at least exist
More than 2000~3000.Country is BOD300 to the wastewater discharge standard of aquaculture, even if aerobic to such substandard, tradition
Technology, which remains on, does not reach requirement.Therefore, biogas slurry becomes important environomental pollution source.It is not a kind of at present good in economic efficiency
Ecological, environmental protective biogas slurry processing method.
Utility model content
The purpose of this utility model is to provide a kind of biogas-microalgae joint ecological treatment system.The utility model provides
Ecological treatment system bionethanation system and microalgae system is organically connected, formed one it is complete overall, make full use of
The organic matter of methane flora anaerobic digestion waste, biogas is produced, and methane is digested by photosynthesis using microalgae (plant)
Ammonia, nitrogen, phosphorus, potassium and the salt that flora can not digest, reach purification biogas slurry, and produce high-grade nutrient solution, for agricultural irrigation,
Form Eco-Industry System.The utility model is environmentally friendly, floor space is small, biogas slurry treatment efficiency high, good in economic efficiency.
The utility model provides a kind of biogas-microalgae joint ecological treatment system, including marsh gas treating system and microalgae
Growth and breeding system；The micro algae growth propagating system includes micro algae growth equipment for breeding 16, the micro algae growth equipment for breeding
16 include shell, dividing plate, light-source system and flue gas microalgae photosynthesizer；
The marsh gas treating system includes methane-generating pit 4, the methane-generating pit 4 with feed arrangement, marsh gas treatment device, biogas slurry
Reason device and biogas residue processing unit are connected respectively, and biogas slurry treatment device and biogas residue processing unit are divided with micro algae growth equipment for breeding 16
It Lian Jie not connect, the marsh gas treatment device is connected with flue gas microalgae photosynthesizer.
Preferably, the flue gas microalgae photosynthesizer includes smoke distribution device 18, smoke distribution dividing plate 19, cigarette
Gas blower fan 20, flue gas control valve 21 and flue gas emptying control valve 22.
Preferably, the methane-generating pit 4 is multiphase flow methane pool.
Preferably, the feed arrangement includes marsh gas raw materials conveying equipment 1, the marsh gas raw materials proportioner being sequentially connected
2 and raw material feeding device 3.
Preferably, the marsh gas treatment device includes the gas storage holder 5 being connected with methane-generating pit 4, and the gas storage holder passes through control
Valve 6 processed is connected respectively with methane utilization device 7 and burning and heater 8, the methane utilization device 7 and burning and heating dress
Gas caused by 8 is put to transmit into microalgae growth and breeding device 16.
Preferably, the biogas slurry treatment device includes biogas slurry storage bin 10, the biogas slurry storage being connected with methane-generating pit 4
Case 10 is connected with biogas slurry circulating pump 9, and the biogas slurry circulating pump 9 circulates biogas slurry in input methane-generating pit；
The biogas slurry storage bin 10 is connected with biogas slurry conveying device 13, and biogas slurry is inputted into micro algae growth equipment for breeding 16.
Preferably, the biogas residue processing unit includes the biogas residue filter press 11 being connected with methane-generating pit 4, the biogas residue press filtration
Machine 11 is connected respectively with micro algae growth equipment for breeding 16 and biogas residue processing equipment 12.
The utility model builds up combined cycle system using " biogas technology "+" microalgae technology ", revolutionizes existing useless
The basic model of thing processing." microalgae " belongs to plant, and it just absorbs the ammonia left in biogas slurry by microorganism, nitrogen, phosphorus, potassium etc.
Organic matter and salt.The tupe of original " microorganism "+" microorganism " is thoroughly changed into " microorganism "+" microflora "
Waste tupe, this is a significant change in waste processing.
From the point of view of processing terminal product, original biogas slurry Aerobic Process for Treatment end product is " sludge ", and this product is national
" dangerous waste product " are classified as, it is necessary to carry out special disposal, processing cost is also very high.And biogas slurry treatment end product of the present utility model is
Microalgae, it is a kind of very high nutriment of nutritional ingredient.By taking chlorella as an example, it is up to more than 60% containing phytoprotein,
Also containing several amino acids, electrolytes and minerals etc..Its nutriment price is up to thousands of one kilogram of members.The utility model institute
Caused nutrient solution can be as the natural fertilizers of crops.Because whole system have passed through the hot fermentation and one of methane-generating pit
The bioprocess of series, caused fertilizer need not again to fertilize, it is not required that sprays insecticide, therefore, the agriculture of the system production
Product belongs to natural agricultural product
The utility model provides a kind of biogas-microalgae joint ecological treatment system.Biogas treatment system of the present utility model
System can be such that organic substance formation is transformed into containing substantial amounts of acetic acid, carbon dioxide, sugar, protein, fat, microfibre,
And it is suitable for the nutrient liquid of micro algae growth breeding containing substantial amounts of ammonia, nitrogen, phosphorus, potassium, salt etc., realize the abundant profit of biogas slurry
With；Then these microalgae nutrition solutions are sent into micro algae growth propagating system, digested and assimilated for microalgae, after micro algae growth maturation,
For producing high-grade fertilizer, or high-grade feed, economic benefit can be greatly promoted.Ecological treatment system provided by the utility model
Environmental protection, floor space is small, biogas slurry treatment efficiency high, good in economic efficiency.
Brief description of the drawings
Fig. 1 is the micro algae growth equipment for breeding structural representation that the utility model specification provides；
Fig. 2 is that biogas-microalgae that the utility model specification provides combines ecological treatment system；
Fig. 3 is that the Suining great Ying plants multiphase flow marsh gas treating system that the utility model embodiment 1 provides is (traditional good
Oxygen technology) process chart.
Embodiment
The utility model provides a kind of biogas-microalgae joint ecological treatment system, including marsh gas treating system and microalgae
Growth and breeding system；The micro algae growth propagating system includes micro algae growth equipment for breeding 16, the micro algae growth equipment for breeding
16 include shell, dividing plate, light-source system and flue gas microalgae photosynthesizer；
The marsh gas treating system includes methane-generating pit 4, the methane-generating pit 4 with feed arrangement, marsh gas treatment device, biogas slurry
Reason device and biogas residue processing unit are connected respectively, and biogas slurry treatment device and biogas residue processing unit are divided with micro algae growth equipment for breeding 16
It Lian Jie not connect, the marsh gas treatment device is connected with flue gas microalgae photosynthesizer.
The utility model is combined marsh gas treating system with micro algae growth propagating system the processing for not only contributing to biogas slurry, also
Provide the nutriment for being more beneficial for microalgae digestion.The utility model does not have special restriction to the methane-generating pit, using this
Methane-generating pit known to art personnel.Methane-generating pit of the present utility model can carry out anaerobic fermentation to organic waste,
Biogas is produced, while produces the nutriment for being advantageous to micro algae growth breeding.Methane-generating pit is by organic biomass anaerobic fermentation
Device.In view of traditional static methane-generating pit easily blocks, material skewness, heat and mass are slow, airtight, microorganism growth is numerous
Grow the defects such as slow, production rate of methane is low.The preferred multiphase flow methane pool of the utility model.Multiphase flow methane pool is used as work using biogas slurry
Medium, power is provided with biogas slurry circulating pump 9, biomass is formed liquid fixed double phase flow in fermentation bed, be in biomass and suspend
" fluidization " fermentation under state.And using the classification in multi-phase flow technology and the principle of stratification, by sand, hard debris, fibre
Proportion is heavier for dimension etc., be unfavorable for anaerobic fermentation and is unfavorable for " biogas residue " that follow-up microalgae absorbs discharges from bottom.And it is rich in albumen
The proportions such as matter, organic acid, carbohydrate, fat are relatively light, the material more than nutritional ingredient is discharged from methane-generating pit top and middle part, into microalgae
Growth and breeding device carries out next process.The utility model does not have special restriction to the multiphase flow methane pool, using this
Multiphase flow methane pool known to art personnel, the multiphase flow as disclosed in the patent of the patent No. 201120294347.3
Methane-generating pit.It is highly preferred that multiphase flow biogas fermentation bed is designed to " tall and thin type " by the utility model, make multiphase flow classification and layering
Effect is more obvious.The abundanter material of nutrition can be sent into micro algae growth by the use of the utility model multiphase flow methane pool
Equipment for breeding.
The utility model utilizes multiphase flow biogas technology, and the material for being unfavorable for micro algae growth breeding is separated, makes to send
Enter the material of microalgae growth and breeding device advantageously in micro algae growth and breeding.Hierarchical layered in multi-phase flow technology is foundation
The principle of dynamics of multiphase flow.Traditional methane tank is static fermentation.And multiphase flow belongs to fluidization and fermented, at all biomass
In fluidized state.But the material of different densities is in the different zones along short transverse.The bigger material of density is in fermentation bed
Bottom.Also, bottom, concentration are higher.Height is higher, and density is smaller, concentration is lower.For density is big, concentration is high
Region is referred to as " emulsion zone ", and the region that density is small, concentration is low is referred to as " dilute-phase zone ".Here it is point of multi-phase flow technology
Level, the principle of stratification.In order that biogas fermentation is more conducive to be formed the classification and layering of different material, the utility model sets fermentation bed
Count into " Shou high type ", biomass is formed different concentration ranges on different height during the fermentation --- dilute-phase zone and close
Phase region.The larger material of some proportions, including silt, hard debris, hard fibre etc. are concentrated in fermenter base.And fermenting
The middle and upper part of bed is mainly protein, fat, various acid, vitamin and with trace element existing for ionized state etc..At this
In utility model, biogas slurry is drawn from top is neutralized, and is sent to micro algae growth equipment for breeding, make microalgae be more conducive to grow and numerous
Grow.
In the utility model, the marsh gas treating system includes feed arrangement, marsh gas treatment device, biogas slurry treatment device
With biogas residue processing unit.
In the utility model, marsh gas raw materials conveying equipment 1, marsh gas raw materials that the feed arrangement includes being sequentially connected are matched somebody with somebody
Expect device 2 and raw material feeding device 3.In the utility model, the marsh gas raw materials proportioner 2 pre-processes to raw material,
The pretreatment is selected according to the difference of raw material, the raw material include stalk, dung polluted water dirt, municipal sludge, kitchen garbage,
Leaf etc., the preprocess method include crushing, milling, hydrolyzing, digesting, and pretreatment of the utility model to raw material preferably will
Biomass processing granulates, powdery, pulpous state isocolloid solution, is easy to the anaerobic fermentation of methane-generating pit, is advantageous to methane association flora
Digested and assimilated with methane flora, produce biogas.Marsh gas raw materials device for formulating described in the utility model preferably adjusts biogas slurry simultaneously
Concentration and acid-base value.In the utility model, the bio liquid or colloid that the raw material feeding device is used to handle well are defeated
Methane-generating pit is sent into, raw material feeding device described in the utility model is preferably bits pump, uniform beneficial to control and feed.
In the utility model, the marsh gas treatment device includes the gas storage holder 5 being connected with methane-generating pit 4, the gas storage holder
Be connected respectively by control valve 6 and methane utilization device 7 and burning and heater 8, the methane utilization device 7 and burning and
Gas caused by heater 8 is transmitted into microalgae growth and breeding device 16.In the utility model, the gas storage holder 5 is storage
The container of biogas.Biogas caused by methane-generating pit is sent into gas storage holder 5 by pipeline, then is sent biogas by the pressure of biogas itself
Enter in methane utilization device 7.In the utility model, the methane utilization device 7 is used to methane being converted into carbon dioxide,
It is the device using biogas.For in general small-sized methane system, because biogas output is small, Domestic Gas is available for.For
Big-and-middle-sized biogas engineering, marsh gas power generation can be used.Generally, jet dynamic control, or combustion can be selected in methane utilization device
Burn stove, or CNG, LNG process units.Need to determine as the case may be for specific equipment choosing.
In the utility model, the biogas slurry treatment device includes the biogas slurry storage bin 10, described being connected with methane-generating pit 4
Biogas slurry storage bin 10 is connected with biogas slurry circulating pump 9, and the biogas slurry circulating pump 9 circulates biogas slurry in input methane-generating pit；Specifically, work as
When methane-generating pit is multiphase flow methane pool, biogas slurry storage bin 10 described in the utility model preferably discharges multiphase flow methane pool from top
The biogas slurry rich in organic matter store.In the utility model, the effect of the biogas slurry circulating pump 9 is from biogas slurry storage bin
Biogas slurry is drawn in 10, power is provided for biogas slurry, biomass is formed " fluidization " fermentation and inner loop in methane-generating pit.
The biogas slurry storage bin 10 is connected with biogas slurry conveying device 13, and biogas slurry is inputted into micro algae growth equipment for breeding 16.
In the utility model, biogas slurry is preferably conveyed to burning and heater 8 by biogas slurry conveying device 13, and biogas slurry is heated,
Biogas slurry input micro algae growth equipment for breeding 16 after heating.In the utility model, the burning and heater 8 are to carry
High methane-generating pit fermentation temperature and the device designed.As a result of " fluidization " fermentation method, and the method by heating biogas slurry
Carry out heating methane tank so that methane-generating pit heating is fast, and temperature is uniform.In general, just text in methane-generating pit can be allowed within 10 minutes
Pause uniformity.
In the utility model, the biogas residue processing unit includes the biogas residue filter press 11 being connected with methane-generating pit 4, described
Biogas residue filter press 11 is connected respectively with micro algae growth equipment for breeding 16 and biogas residue processing equipment 12.It is described in the utility model
Biogas residue filter press 11 is used to part biogas slurry being transported in micro algae growth equipment for breeding 16.
In the utility model, the micro algae growth equipment for breeding 16 is a kind of with organic biomass and gaseous carbon sources, bag
Include carbon monoxide, carbon dioxide is raw material, with light source (including artificial light sources and sunshine) carry out photosynthesis, produce algae
With the device of oxygen.In the utility model, the micro algae growth equipment for breeding 16 includes shell, dividing plate, light-source system and cigarette
Gas microalgae photosynthesizer.
In the utility model, the micro algae growth equipment for breeding 16 more preferably includes shell, dividing plate, liquid level and limits dress
Put, feed arrangement and drawing mechanism, every layer of dividing plate top are provided with light source, agitating device and micro algae growth breeding bed.In this reality
With in new embodiment, the micro algae growth equipment for breeding structure is preferably as shown in Figure 1.Wherein, a is agitating device motor；B is
Stirring driving machine structure；C is microalgae liquid level device for limiting；D is breeding shell；E is breeding tower internal partition；F is agitating device
Blade；G is that micro algae growth breeds bed；H is light-emitting lamp；I is Power distributor；J is power transmission device；K microalgae nutrition
Material shower nozzle；L is nutriment conveying mechanism；M is that microalgae reclaims suction inlet；N is that microalgae reclaims discharge line；O seeks for microalgae
Nutrient solution proportioner；P is microalgae nutrition solution；Q is microalgae nutriment charging gear；R is microalgae collection device；S stores up for microalgae
Deposit and after-treatment device；T is algae solution body discharge line；U is algae solution exhaust-control valve；V is algae solution body recycle control valve；W is algae
Liquid return pump.
In the utility model, the micro algae growth equipment for breeding is preferably plate column, and the utility model is to the breeding
The shape of device does not have special restriction, using the conventional shape of culture apparatus well known to those skilled in the art, such as circle
Cylindricality, cuboid.Micro algae growth equipment for breeding described in the utility model be it is a kind of with organic biomass and gaseous carbon sources (including
Carbon monoxide, carbon dioxide) be raw material, with light source (including artificial light sources and sunshine) carry out photosynthesis, production algae and
The device of oxygen.Micro algae growth equipment for breeding 16 described in the utility model includes shell, dividing plate, light-source system and flue gas microalgae light
Close action system.Micro algae growth equipment for breeding of the present utility model includes shell, and the utility model does not have to the material of the shell
There is special restriction, using sheathing material well known to those skilled in the art, such as opaque material, specially metal, glass
Glass steel；Sheathing material described in the utility model is preferably transparent material, specially glass, more specifically lucite, tempering glass
Glass.The selection of the utility model light transmissive material shell can make full use of sunshine, device is internally formed good penetrating light
According to environment.Specifically, if growth and breeding device is divided into 20 layers, per layer height 0.5m, then improve 20 than pond culture
Times efficiency.If using glass partition, the exposure of sewage is double-sided exposure, equivalent to being further added by one times.When using glass shell,
Natural sunlight is made full use of, can about increase by 70% exposure area.Along with using artificial light source, can exposing round the clock, and
Manual adjustment intensity of illumination, at least improve efficiency more than 10 times than cultivation naturally.For another example, with diameter 40m, 20 layers, every layer of 0.5m
Exemplified by the growth and breeding device of the depth of water, using glass partition and shell, its total exposure area is up to 51496 ㎡, and individual layer exposes
Light area is 1256 ㎡, only the 2.4% of plate column exposure.If it is considered that artificial light source can expose round the clock, and expose
Intensity can be adjusted, than naturally exposure at least improve more than one times of efficiency, than exposure the gross area reach 110,000 ㎡, for it is original from
87 times of right daylighting area.
In the utility model, the micro algae growth equipment for breeding includes dividing plate, and micro algae growth is bred and filled by the dividing plate
Put and be divided into sandwich construction, the device of every layer of culture microalgae breeds bed for micro algae growth.
In the utility model, the liquid level device for limiting is the pipeline through dividing plate.The utility model is to the pipeline
Material there is no special restriction, using pipeline material well known to those skilled in the art.It is described in the utility model
Liquid level device for limiting is used to control every layer of liquid level.
In the utility model, the mode of the stirring preferably includes mechanical agitation and aerodynamic force stirring.In this practicality
In new, each layer of the micro algae growth equipment for breeding is both provided with agitating device.
In the utility model, the flue gas microalgae photosynthesizer include smoke distribution device 18, smoke distribution every
Plate 19, flue gas blower fan 20, flue gas control valve 21 and flue gas emptying control valve 22.Burnt caused flue gas by methane utilization device 7
(containing carbon dioxide and air etc.) enters the pressurization of carbon dioxide blower fan 20 by flue gas control valve 21 and is sent into smoke distribution device
18.Flue gas equably can be sent into micro algae growth breeding tower 16 by smoke distribution device 18, in the presence of light source, with microalgae
Photosynthesis is produced, further produces microalgae.In general, widely used aerobic dirt can be selected in smoke distribution device 19
Aeration head in water process, preferably select the patented technology " screen cloth of the Patent No. 20120003757.2 of bad damp people's utility model
Formula aeration head ".
In the utility model, the selection of the microalgae separator is preferably selected according to the length of microalgae, specifically
Ground, when microalgae is 50 μm~1mm, the mode of the mode commonly filtered and press filtration is taken to collect.It is such as straight for special thin microalgae
The chlorella that 3~6 μm of footpath preferably takes the mode of ultrafiltration to collect.In the case of particular/special requirement, counter-infiltration (RO) can be taken
Mode filters.The microalgae separator preferably uses conventional commercial separator.The utility model to microalgae store and
After-treatment device does not have special restriction, is preferably selected according to the application of microalgae, e.g., when the purposes of microalgae is edible
When, it is preferred to use the mode such as sterilizing and drying is handled；When the purposes of microalgae is as fertilizer (as utilized sewage and waste
The microalgae of production) preferably directly applied fertilizer.
In the utility model embodiment, the biogas-microalgae joint ecological treatment system is preferably as shown in Figure 2：
Wherein, 1 is marsh gas raw materials conveying equipment；2 be marsh gas raw materials proportioner；3 be marsh gas raw materials feeding device；4 are
Methane-generating pit；5 be gas storage holder；6 be control valve；7 be methane utilization device；8 be burning and heater；9 be biogas slurry circulating pump；10
For biogas slurry storage bin；11 be biogas residue filter press；12 be biogas residue processing equipment；13 be biogas slurry conveying device；14 be distribution system；15
For light source power distribution equipment；16 be micro algae growth equipment for breeding；17 be algae artificial light sources；18 be smoke distribution device；19 be cigarette
Gas distribution separator；20 be flue gas blower fan；21 be flue gas control valve；22 be that flue gas empties control valve；23 be chimney；24 be algae point
From device.
In the utility model, the biogas-microalgae joint ecological treatment system handling process is specifically preferably as follows：
In marsh gas treating system, the dirt of different materials, such as excrement, sludge, kitchen garbage, stalk are set by feedstock transportation
Standby 1 delivers to proportioner 2.After proportioner 2 prepares raw material, it is sent into methane-generating pit 4 through feeding device 3 and is fermented.Give
Material equipment 3 is the equipment selected according to different materials.It is more convenient using feed pump under normal circumstances, more preferably using screw rod
Pump.Methane-generating pit 4, it is the equipment that biomass material is produced to biogas after everfermentation as previously described.The biogas as caused by the equipment
It is sent into gas storage holder 5 and is stored by pipeline.Conventional gas storage holder has double film gas storage holders and fluid seal gas holder, and both gas storage holders are all
It can buy in the market.Biogas caused by methane-generating pit, biogas utilization equipment 7 is on the one hand entered by control valve 6 and used, including occupied
The people do manual labour fuel, generate electricity, or make bio-natural gas (CNG, LNG)) etc..Flue gas caused by burning passes through control valve 21
Micro algae growth equipment for breeding 16 is sent into as raw material production algae with booster fan 20.Biogas caused by methane-generating pit it is another
Part can heat biogas slurry by burning and heater 8, then biogas slurry is sent into methane-generating pit 4 by pipeline, so as to heating biogas
Pond.The material in methane-generating pit is set to be sufficiently mixed and stirred by hydraulic action.Biogas slurry in methane-generating pit stores into biogas slurry
Case 10.Biogas slurry in biogas slurry storage bin enters biogas slurry circulating pump 9 by pipeline, right into burning and heater 8 by pressurization
Biogas slurry heats, and biogas slurry enters back into methane-generating pit, completes the circulation of biogas slurry.The biogas residue of methane-generating pit and the mixture of biogas slurry are arranged through piping
Enter biogas residue filter press 11 and carry out separation of solid and liquid.Wherein, biogas residue processing equipment 12 is sent into for solid portion to handle.For natural pond
Slag treatment equipment needs to be determined according to different purposes.For example in general purposes only needs, by biogas residue flash cooled, to make moisture
It is down to 40~50% and can be used as agricultural fertilizer use.Organic commercial fertilizer is made if desired to also need to enter according to national relevant regulations
Row fertilizer ratio, and drying and processing, so as to carry out market sale.For biogas slurry caused by methane-generating pit, from biogas slurry case 10 by managing
Road enters biogas slurry conveying device 13 and is sent into micro algae growth equipment for breeding 16, and the raw material as algal grown breeding carries out digestion suction
Receive, so as to the purpose for reaching biogas slurry treatment and utilizing.Biogas slurry conveying device can be pressurized using sewage pump in general
And conveying.
In micro algae growth propagating system, the algal grown breeding needs algae kind, raw material and sunlight.Because algae has
The function of self-reproduction, algae kind can disposably be bought from professional algal culture company, and by way of manually adding once
Property by algae kind add micro algae growth equipment for breeding, make its natural growth and breeding.The field of the utility model algal grown breeding
Structure and the function description of institute --- micro algae growth equipment for breeding are as described above.
In the utility model, a raw material part for the algal grown breeding comes from natural pond caused by marsh gas treating system
Liquid.Because biogas slurry is the bio liquid after methane-generating pit ferments, containing abundant ammonia, nitrogen, phosphorus, various salts and other have
Machine material, such as protein, acid, sugar.These organic matters are good algae raw materials, can be used for producing algae.Meanwhile biogas slurry
It is very intractable pollutant, by the absorption of algae, is purified biogas slurry, reaches the purpose of processing biogas slurry.
The generation process of biogas is divided into three phases.First stage, i.e. liquefaction stage, zymogenic bacteria group are divided using it
The ectoenzyme secreted, the larger molecular organicses such as the waste water after fowl and animal excrement, crop material, bean product processing, which are resolved into, can be dissolved in water
The micromolecular compound such as monose, amino acid, glycerine and aliphatic acid.The second stage of biogas fermentation, produce acid phase, this stage
It is that micromolecular compound is broken down into acetic acid, propionic acid, butyric acid, hydrogen and carbon dioxide etc. by zymogenic bacteria, then is produced by production hydrogen
Acetic acid bacteria is converted into it available acetic acid of methanogen, hydrogen and carbon dioxide.The phase III of biogas fermentation, i.e. methane phase
Stage, methane-producing bacteria group, formic acid, acetic acid, hydrogen and the titanium dioxide of not three kinds of flora institute decomposition and inversions of methane phase more than
Carbon micromolecular compound etc. generates methane.Biogas can also produce the substantial amounts of battalion for being advantageous to micro algae growth breeding in process of production
Support material.These materials are sent into micro algae growth equipment for breeding by the utility model, the raw material as microalgae production.In order that biogas
More microalgae nutriments are produced in production process, the utility model is preferably by enzyme-added, control fermentation time, pH value to production
Raw biogas and generation microalgae nutriment carry out reasonable distribution, and are controlled by.
In the utility model, another raw material of the algal grown breeding is carbon dioxide and an a small amount of oxidation
Carbon.Carbon dioxide of the present utility model mostlys come from biogas combustion and heater 8 and the burning biogas of biogas utilization equipment 7 institute
Caused flue gas.Because the main component of biogas is methane, it will produce carbon dioxide and water after burning, for not combustion completely
The methane gas of burning will produce carbon monoxide.Therefore, partial CO 2 and carbon monoxide are contained in the combustion product gases of biogas.This two
Kind gas is all the raw material of algae production.In the utility model, biogas combustion and heater 8 and the institute of methane utilization device 7
Caused flue gas is all to enter micro algae growth equipment for breeding 16 by flue gas control valve 21 and flue gas blower fan 20.For other sources
Carbon dioxide can be with similar process.Flue gas (carbon dioxide) distribution apparatus 18 is provided with micro algae growth equipment for breeding by flue gas
It is evenly distributed to the various pieces of micro algae growth equipment for breeding.Smoke distribution dividing plate is additionally provided with micro algae growth equipment for breeding
19, it can be such that flue gas is uniformly sent into from smoke conveying duct in tower.Design for this smoke distribution device can basis
In general fluid mechanics principle is designed.Porous plate can be used to carry out flue gas distribution for simple structure design.
In the utility model, the light source required for the algal grown breeding, mainly people is used in the utility model
Make light source.The generation technique of artificial light sources is：Parameters of electric power is adjusted to suitable by the power supply downloaded from power network by distribution system 14
Close the parameters of electric power of artificial light sources.In view of the security of equipment, the general voltage class using no more than 36 volts.It will configure
Electric power pass through light source distribution line 15 and access algae artificial light sources 17.Because the luminous efficiency of LED is very high, and the life-span
It is long, therefore be considered as White LED etc. in general and be used as light source lamp.
Algae separator 24 is sent into for the later algae of growth and maturity by pipeline to carry out solid algae and liquid
Separation.Detailed content on algae separator is as above asked described.The solid algae separated through separator is used to give birth to
Produce nutrient and healthcare products, high-grade feed, or high-grade fertilizer；The liquid portion that separator is separated can be used as agricultural irrigation institute
With, or discharged after inspection.
A kind of biogas described in the utility model-microalgae joint ecological treatment system is done with reference to specific embodiment into
The detailed introduction of one step, the technical solution of the utility model include but is not limited to following examples.
Embodiment 1
The utility model, using microalgae processing biogas slurry, succeeded in 2014.The project is in Suining City of Sichuan Province great Ying
One domestic pig farm of county, Tian Hui energy science and technologys company have built an excrement dirt multiphase flow biogas total system.Suining great Ying is supported
A multiphase flow marsh gas treating system process chart is grown as shown in figure 3, wherein A is pig house, and B is manure pit, and C is excrement dirt pump, and D is
Batcher, E are feed pump, and F is methane-generating pit, and G is flowmeter, and H is air accumulator, and I is combustion furnace, and J is circulating pump, and K is biogas slurry case,
L is aerobic fluidized bed, and M is clarification case, and N is catch pit, and O is biogas slurry pump, and P is flowmeter, and Q is Aeration fan, and R is seperator.
Start to build at the beginning of 2015, wherein, raw material is used as using excrement is dirty, biogas is produced with multiphase flow biogas technology, is used in combination
Three-level aerobic system handles biogas slurry.The project will bring into operation in the end of the year 2015.Operation result shows that multiphase flow bionethanation system circulates
Normally, all technical exceedes traditional methane tank more than 30%.But because biogas slurry contains substantial amounts of ammonia, nitrogen, phosphorus and salt, and
And biogas slurry BOD, COD content is very high, reaches more than 10000.So that biochemical degradation can only achieve 50% or so, final biogas slurry
BOD, COD are more than 3000.And the actual ton day of index 9 of biogas slurry treatment amount, the actual ton day of index 2 all do not reach.
In view of simple biogas and the disadvantage of traditional biogas slurry treatment system, 2016 to the system have been comprehensive comprehensive
Transformation.Its basic ideas is as follows：
Biogas slurry is handled with microalgae, instead of original Aerobic Process for Treatment biogas slurry.Because microalgae belongs to plant, and Aerobic Process for Treatment system
Microorganism in system belongs to animal class.There occurs sexually revise at all for tupe.Microalgae has for digestion ammonia, nitrogen, phosphorus and salt
Inborn advantage., can be with and selected microalgae contains abundant protein, fat, amino acid, vitamin, mineral matter etc.
As high-grade nutrient and healthcare products, feed and fertilizer.And the byproduct of Aerobic Process for Treatment contains a large amount of microorganism corpse " dangerous wastes
Product ".A treatment for cow manure system with secondary pollution is set to be changed into a complete ecological treatment system.
Due to traditional static fermentation methane-generating pit, the dirty precipitation of excrement be present, be substantially all using Technology in Solid/Liquid Separation, only ferment
Biogas slurry.And the system multiphase flow biogas technology, but due to containing substantial amounts of animal wool, stalk fibrid in excrement dirt despite the use of
And other debris, cause feeding system can not be to high concentration material.Therefore, feeding system of the present utility model is given using screw pump
Material, it can be fed to various materials such as excrement dirt, stalk, sludge, vinasse.With reference to multiphase flow biogas fermentation technology, adapt to
Various materials carry out biogas fermentation.After engineered, it especially adapts to the synthesis waste processing in rural area, community and cities and towns, to building
Low-carbon community and cities and towns are significant.The concentration of material processing brings up to 12~15% from original 3~8%.Make system
Effective treating capacity greatly increases.
Multiphase flow biogas technology has the function of being preferably classified and be layered.That is, there is " emulsion zone " in multiphase flow methane pool
" dilute-phase zone ".It is smaller more to arrive the material density at top, it is more bigger to bottom density.For the sand in material, debris, a huge sum of money
Belong to, and some are discharged not by fiber of microbial digestion etc. by bottom.By this technological transformation it is ensured that entering in a subtle way
Material in algae growth and breeding system can be digested and assimilated quickly by microalgae.
Super insulation is carried out to original multiphase flow methane pool, and transforms biogas slurry heating system, heat-energy losses is reduced, makes multiphase
Stream methane-generating pit ferments under high temperature state.Passing through this transformation so that original fermentation temperature brings up to 35 from 30 DEG C or so~
55℃.Fermented in this temperature environment, most harmful bacterias can be killed, particularly harmful worm's ovum can be killed all
Go out.Micro algae growth is discharged into such biogas slurry and breeds tower it is ensured that the good living environment of microalgae.
By material feeding system, pretreatment system, feeding system, multiphase flow marsh gas fermenting system and micro algae growth line of breeding
System and other systems carry out organic coupling, while foring one complete " biogas-microalgae joint ecological treatment system ".Using new
After technology, the dirty treating capacity of excrement brings up to 1000kg/d from daily 200kg/d, and biogas slurry treatment amount reaches more than 20t/d,
BOD, COD are below 20.The pH value of microalgae liquid drops to 7.4 or so from original 9 or so, has substantially achieved neutral water
Matter standard.Ammonia, nitrogen, phosphorus, the detection data of salt are also without out.But may infer that has very big decline than original processing mode.
And biogas residue amount drops to less than 30% from 60~70%.The impurity contained in microalgae is below 0.1%.
Table 1 show the Surveillance of biogas slurry water quality that the improved system of the utility model handles to obtain.Report result
The effect of display is using microalgae processing biogas slurry is very good.Such as according to national breeding wastewater discharge standard, BOD150,
COD400 is with regard to up to standard.And the BOD (five-day BOD) of the present apparatus is only 11.8, COD (COD) is 37, far
Far below discharging standards.The problem of aquaculture excrement pollutes environment for a long time which solves China.
(breeding wastewater testing result) is reported in the biogas slurry water quality detection of table 1
Unit：Mg/L (except pH)
It was verified that it is successful, Ke Yiyong that the micro algae growth equipment for breeding that we develop, which handles various biogas slurries and sewage,
Industrial or agricultural biogas slurry and sewage disposal in reality.Further improved by us, can be also used for more extensive field.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (7)
1. a kind of biogas-microalgae joint ecological treatment system, it is characterised in that bred including marsh gas treating system and micro algae growth
System；The micro algae growth propagating system includes micro algae growth equipment for breeding (16), micro algae growth equipment for breeding (16) bag
Include shell, dividing plate, light-source system and flue gas microalgae photosynthesizer；
The marsh gas treating system includes methane-generating pit (4), the methane-generating pit (4) with feed arrangement, marsh gas treatment device, biogas slurry
Reason device and biogas residue processing unit connect respectively, biogas slurry treatment device and biogas residue processing unit and micro algae growth equipment for breeding (16)
Connection connection, the marsh gas treatment device are connected with flue gas microalgae photosynthesizer respectively.
2. processing system according to claim 1, it is characterised in that the flue gas microalgae photosynthesizer includes flue gas
Distribution apparatus (18), smoke distribution dividing plate (19), flue gas blower fan (20), flue gas control valve (21) and flue gas emptying control valve
(22)。
3. processing system according to claim 1, it is characterised in that the methane-generating pit (4) is multiphase flow methane pool.
4. processing system according to claim 1, it is characterised in that the biogas that the feed arrangement includes being sequentially connected is former
Expect conveying equipment (1), marsh gas raw materials proportioner (2) and raw material feeding device (3).
5. processing system according to claim 1, it is characterised in that the marsh gas treatment device includes and methane-generating pit (4)
The gas storage holder (5) of connection, the gas storage holder pass through control valve (6) and methane utilization device (7) and burning and heater (8) point
Do not connect, gas caused by the methane utilization device (7) and burning and heater (8) is transmitted into microalgae growth and breeding device
(16)。
6. processing system according to claim 1, it is characterised in that the biogas slurry treatment device includes and methane-generating pit (4)
Biogas slurry storage bin (10), the biogas slurry storage bin (10) of connection are connected with biogas slurry circulating pump (9), the biogas slurry circulating pump (9)
Biogas slurry is circulated in input methane-generating pit；
The biogas slurry storage bin (10) is connected with biogas slurry conveying device (13), and biogas slurry is inputted into micro algae growth equipment for breeding (16).
7. processing system according to claim 1, it is characterised in that the biogas residue processing unit includes and methane-generating pit (4)
The biogas residue filter press (11) of connection, the biogas residue filter press (11) and micro algae growth equipment for breeding (16) and biogas residue processing equipment
(12) connect respectively.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083322A (en) * | 2017-06-23 | 2017-08-22 | 四川省天惠能源科技有限公司 | A kind of multilayer micro algae growth equipment for breeding |
| CN107142197A (en) * | 2017-06-23 | 2017-09-08 | 四川省天惠能源科技有限公司 | A kind of biogas microalgae joint ecological treatment system and its application |
| CN113321312A (en) * | 2021-06-28 | 2021-08-31 | 重庆大学 | High concentration of CO2Method for atmosphere domestication of microalgae high ammonia nitrogen resistant biogas slurry |
-
2017
- 2017-06-23 CN CN201720740588.3U patent/CN207047224U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083322A (en) * | 2017-06-23 | 2017-08-22 | 四川省天惠能源科技有限公司 | A kind of multilayer micro algae growth equipment for breeding |
| CN107142197A (en) * | 2017-06-23 | 2017-09-08 | 四川省天惠能源科技有限公司 | A kind of biogas microalgae joint ecological treatment system and its application |
| CN113321312A (en) * | 2021-06-28 | 2021-08-31 | 重庆大学 | High concentration of CO2Method for atmosphere domestication of microalgae high ammonia nitrogen resistant biogas slurry |
| CN113321312B (en) * | 2021-06-28 | 2022-12-13 | 重庆大学 | High concentration of CO 2 Method for atmosphere domestication of microalgae high ammonia nitrogen resistant biogas slurry |
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