CN101717794A - Process and equipment for preparing marsh gas by solid fermentation - Google Patents
Process and equipment for preparing marsh gas by solid fermentation Download PDFInfo
- Publication number
- CN101717794A CN101717794A CN200910273093A CN200910273093A CN101717794A CN 101717794 A CN101717794 A CN 101717794A CN 200910273093 A CN200910273093 A CN 200910273093A CN 200910273093 A CN200910273093 A CN 200910273093A CN 101717794 A CN101717794 A CN 101717794A
- Authority
- CN
- China
- Prior art keywords
- fermentation
- raw material
- natural pond
- marsh gas
- manhole cover
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/16—Solid state fermenters, e.g. for koji production
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
- C12M33/22—Settling tanks; Sedimentation by gravity
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M45/00—Means for pre-treatment of biological substances
- C12M45/03—Means for pre-treatment of biological substances by control of the humidity or content of liquids; Drying
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Zoology (AREA)
- Genetics & Genomics (AREA)
- Molecular Biology (AREA)
- Sustainable Development (AREA)
- Microbiology (AREA)
- Biotechnology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the field of marsh gas preparation, and relates to a process and equipment for preparing marsh gas by solid fermentation of animal wastes and crop straws. The process and the equipment are characterized in that the equipment comprises a system for preparing the marsh gas by solid fermentation, wherein the system consists of at least one group or more groups of marsh gas fermentation units; and the process comprises a pretreatment step of marsh gas raw materials. Generally, the process adopts a sequential solid fermentation process, which comprises the following steps: firstly, tearing the crop straws, and naturally heaping the crop straws for 3 to 7 days for fermentation to obtain a raw material 1; heaping and acidifying dry and fresh waste in the animal wastes for 3 to 5 days for fermentation to obtain a raw material 2; and then mixing the raw material 1 and the raw material 2 in a proper carbon-nitrogen ratio to obtain a mixed fermentation raw material, and inoculating a proper amount of sludge in a marsh gas pool or a sewage treatment plant with the mixed raw material so as to promote the production of the marsh gas through indigenous microbes. The equipment of the invention generally consists of 26 independent and intercommunicated fermentation devices, traveling transport devices, feeding devices, discharging devices, marsh gas solution delivering devices, marsh gas solution reflux devices and marsh gas collection devices. The process and the equipment provide new technology for low-carbon economy.
Description
Technical field
This belongs to agro-ecology energy utilization technology field, especially belongs to agriculture biogas preparing technical field.Be specifically related to a kind of technology and equipment that utilizes livestock and poultry feces and agricultural crop straw for the two-phase preparing marsh gas by solid fermentation of fermentation raw material,
Background technology
Along with developing rapidly of intensification livestock and poultry breeding industry, production model turns to present intensification, mass-producing, the commercial mode of production by the original courtyard-style mode of production.The change of production model can bring certain risk, because in intensive culture, livestock and poultry feces (containing excrement, urine and wash-down water) generation is big, and high concentration, if can not effectively dispose, to be easy to cause environmental pollution, and make field, intensive culture field become a large-scale pollutant emission source; While also provides possibility for the centralized management and the disposal of the pollutent in the production process, if adopt rational technology, these pollutents can become recycled resource.
At the problems referred to above, the investigator has proposed numerous feasible technology, comprise nature stacking fermentation method, solar greenhouse fermentation method, the dynamic fermentation method of oxygenation (compost), high temperature and rapid drying method, thermal spraying, micro-wave drying method and biogas fermentation method etc., wherein the biogas fermentation technology then is considered to the most practicable a kind of technology, it both can effectively handle waste, can produce convenient and the clean methane energy again.
For traditional methane engineering technology, the main wet fermentation technique of anaerobism that adopts, promptly utilize liquid dung to carry out anaerobically fermenting and produce biogas (needing that generally feces of livestock and poultry is added water 2-3 doubly dilutes), this mode fermentation raw material solid concentration is low, needs reactor volume huge, and volume yield rate is low, and natural pond, fermentation back liquid solubility COD concentration is very high, be difficult to solid-liquid separation, extremely difficult, cause second environmental pollution easily.
Therefore, little, reduced investment of the new volume of exploitation and aftertreatment are applicable to that simply the novel anaerobic ferment process and the equipment of agriculture biogas utilization are very important.
Summary of the invention
The objective of the invention is to address the above problem, a kind of technology and equipment that can be used for the two-phase preparing marsh gas by solid fermentation of big-and-middle-sized livestock and poultry farm is provided, prove through the small-scale long-play, technology of the present invention and equip reasonable in design feasible, easy and simple to handle, product biogas that not only can be high-efficiency continuous also can be developed to fertilizer with fermentation back biogas residue and biogas liquid and further utilize.This technology can be in more extensive regional application with equipment.
Realize that technology of the present invention is as follows:
A kind of method of preparing marsh gas by solid fermentation, it includes the solid state fermentation of one or more groups biogas fermentation unit composition at least
The system of preparation biogas also comprises the pre-treatment step of the raw material for preparing described biogas, and implementation step is as follows:
(1) will rub the stalks of the farm crop after tearing, with behind the described stalk of former natural pond liquid wetting of methane-generating pit stack retting system 3-7 days, the leavening temperature of control stockpile is 33-37 ℃, above and heap temperature begins decline by maximum to stockpile temperature to 60 degree, visible white microorganisms stops the system of macerating in windrow, obtains fermentation raw material 1;
(2) with the fresh and dried excrement dirt in the livestock and poultry feces in the pond stack retting 3-5 days, the leavening temperature of control stockpile is 33-37 ℃, and extremely described stockpile color becomes chocolate by yellow, makes the pH to 6.8-7.4 of this stockpile, keep the relatively stable of this pH value, obtain fermentation raw material 2 to the stack retting end;
(3) be that 20-30 (optimum carbon nitrogen ratio is 25) is the amount mixing step 1 of benchmark by carbon-nitrogen ratio) fermentation raw material 1 and the step 2 of gained) fermentation raw material 2 of gained, press the 20-40% inoculation methane-generating pit mud or the sludge of sewage treatment plant of fermentation raw material 1 and fermentation raw material 2 gross weights, in the fermentation unit during the fermentation of packing into after mixing is equipped, the control fermentation period is 20-30 days (optimum value is 25 days), the control leavening temperature is 33 ℃-37 ℃ (optimum temps is controlled at 35 ℃), adjusts the pH to 7 of fermented product.
Be applicable to the equipment special of above-mentioned processing method, by 20-30 single independently fermentation unit (1,19,20,21,22,23,24,25,26), traveling transport (2), feeding unit (3), drawing mechanism (4), natural pond liquor collecting device (5,26), natural pond liquid reflux (6) and sludge gas collecting device (7,25) constitute; The main body of described fermentation unit (1,19,20,21,22,23,24,25,26) is cylindrical, and its underpart is taper, finishes the loading and unloading of fermentation raw material respectively by feeding unit (2) and drawing mechanism (3).
Each fermentation unit (1,19,20,21,22,23,24,25,26) be made up of fixed part base (8), moving portion inner bag (9) and mobile manhole cover (11), base (8) lower end inner support inner bag (9) plays insulation effect, and connects natural pond liquid take-off equipment (5); Manhole cover (11) is placed in the tank (10) of base (8) upper end, connects sludge gas collecting device (7 or 25) and natural pond liquid reflux (6); Dress fermentation raw material in the inner bag (9), and can be after opening manhole cover (11) is sling by traveling transport (2) and to be transported back and forth at each base and charging intersite.
The lower end of each fermentation unit (1,19,20,21,22,23,24,25,26) links to each other with natural pond liquor collecting device (5,26) by base (8), utilizes pressure official post natural pond liquid to flow automatically to natural pond liquor collecting device (5,26); Each fermentation unit (1,19,20,21,22,23,24,25,26) upper end links to each other with natural pond liquid reflux (6) by manhole cover (11) and sludge gas collecting device (7,25), and it is in the above tank (10) of 40cm that manhole cover (11) is placed on the degree of depth, and have natural pond liquid return port (12) and side has biogas delivery outlet (14), and be connected respectively to gas storage holder and liquid storage tank in the top middle portion of manhole cover (11).
Described tank (10) is the U type, and groove depth is 40mm, and described manhole cover (11) is installed on the base (8), and manhole cover (11) is connected with tank (10) by the card post that is fixed on tank bottom inwall.
Natural pond liquid refluxes by being connected to natural pond liquor collecting device (5,26) pump provides pressure, and at each fermentation unit (1,19) manhole cover (11) inner tip is installed the shower (13) that radius is manhole cover disc 1/3 a radius annular, the diameter of shower (13) is less than 10cm, and it is the through hole of 1-2mm that its surface has 3 row's diameters.
Description of drawings
Fig. 1 is an overall craft equipment schematic layout pattern of the present invention.
Number among the figure: the 1-fermentation unit; The 2-traveling transport; The 3-feeding unit; The 4-drawing mechanism; 5-natural pond liquor collecting device; 6-natural pond liquid reflux; The 7-sludge gas collecting device.
Fig. 2 is a solid methane fermentation unit structural representation of the present invention.
Number among the figure: the 8-firm banking; 9-moves inner bag; 10-tank (U-shaped); The 11-manhole cover; 12-natural pond liquid return port; The 13-shower; 14-biogas delivery outlet; 15-hot water filling orifice; 16-temperature sensor patchhole; 17-natural pond liquid relief outlet.
Fig. 3 is the solid fermentation device structural representation.
Number among the figure: 18-natural pond liquid reflux pump and valve; 19,20,21,22,23,24-fermentation unit (fermentation working cell); The 25-sludge gas collecting device; 26-natural pond liquor collecting device.
Embodiment
The present embodiment specific design is with reference to above-mentioned " summary of the invention " and " description of drawings " described technical scheme, and for saving space, this section no longer repeats above-mentioned disclosed ins and outs.
Processing step of the present invention is as follows
1) culture scale according to livestock and poultry farm, estimation day defecation is amount just, measures the water ratio and the carbon-nitrogen ratio of ight soil according to ordinary method;
2) determining to intend adding wherein is the kind of agricultural crop straw as amendment, generally can select the stalk of farm crop such as straw, straw, rape stalk, cornstalk, also can be green grass and leaf etc., measures its water ratio and carbon-nitrogen ratio according to ordinary method before using;
3) be 20 to 30 according to the fermentation raw material carbon-nitrogen ratio, optimum value is 25, and solid concentration is 15% to 20%, and optimum value 20% is determined the consumption of ight soil and stalk;
4) according to the consumption of step 3), measuring and calculating operation first needs the inoculum consumption, described inoculum is methane-generating pit mud or sludge of sewage treatment plant, the mass ratio of inoculum is 20-40%, optimum value is 30%, need not add inoculum more later on, promptly utilize former natural pond liquid to get final product as inoculum with natural pond liquid reflux type;
5) according to ight soil, stalk and inoculum (methane-generating pit mud or sludge of sewage treatment plant) consumption, calculate its volume, determine the volume of required fermentation unit;
6) the control leavening temperature is 33-37 ℃, optimum temps is controlled at 35 ℃, fermentation period is controlled to be 20 days to 30 days, optimum value is 25 days, determine suitable leavening temperature and fermentation period, and definite fermentation unit total quantity and plant area, factory building length is that 2 times of diameter of single fermentation unit multiply by quantity, width is 3 times of diameter of single fermentation unit;
7) raw materials pretreatment, stalk are rubbed through machinery and are torn to 2-3cm, with behind the liquid wetting of former natural pond stack retting 3-7 days, descend and the generation a large amount of white microorganisms of visible (for example white rot is mould) behind the high temperature to occurring; Fresh and dried excrement dirt in the livestock and poultry feces in acidification pool stack retting 3-5 days becomes chocolate by yellow to color, makes the pH value reach 6-8 and keeps the relatively stable of this pH value;
8) stalk that the step 7) pre-treatment is good and excrement the are dirty fermentation unit of packing into after mixing with inoculum (being described methane-generating pit mud of step 6) or sludge of sewage treatment plant).
The equipment special of suitable technology of the present invention fermentation equipment part generally is by fermentation unit (1,19,20,21,22,23,24,25,26), traveling transport (2), feeding unit (3), drawing mechanism (4), natural pond liquor collecting device (5,26), natural pond liquid reflux (6) and sludge gas collecting device (7 or 25) constitute; Fermentation unit (1,19,20,21,22,23,24,25,26) volume and quantity are by step 5) and 6 in the above-mentioned processing method) determine fermentation unit (1,19,20,21,22,23,24,25,26) be that steel construction or other matrix materials constitute, its main part is cylindrical, and the bottom is taper.Each fermentation unit ((1,19,20,21,22,23,24,25,26) be made up of fixed part base (8), moving portion inner bag (9), mobile manhole cover (11), base (8) lower end inner support inner bag (9) plays insulation effect, and connects natural pond liquid take-off equipment (5); Manhole cover (11) is placed in the tank (10) of base (8) upper end, has natural pond liquid return port (12) in manhole cover (11) top middle portion and is connected to natural pond liquid reflux (6), and side has biogas delivery outlet (14) and is connected to sludge gas collecting device (7,25); Pack in the inner bag (9) fermentation raw material 1 and 2 and inoculum methane-generating pit mud or sludge of sewage treatment plant, and can be after opening manhole cover (11), sling by traveling transport (2) and to transport back and forth, finish the loading and unloading of fermentation raw material respectively by feeding unit (2) and drawing mechanism (3) in the charging place at each base and charging intersite; The lower end of each fermentation unit (1,19) links to each other with natural pond liquor collecting device (5,26) by base (8), utilizes pressure official post natural pond liquid to flow automatically to natural pond liquor collecting device (5,26); The upper end links to each other with natural pond liquid reflux (6) by manhole cover (11) and sludge gas collecting device (7 or), it is in the above tank of 40cm that manhole cover (11) is placed on the degree of depth, and open biogas delivery outlet and natural pond liquid return port, and be connected respectively to gas storage holder and liquid storage tank at the side of manhole cover (11).Tank (10) is the U type, groove depth is 40mm, interior dress tap water is used for the interior biogas of sealing and fermenting device, and (groove depth depends on fermentation unit (1,19) interior gaseous tension requirement, generally may be selected to be 40mm), described manhole cover (11) is installed on the base (8), and manhole cover (11) is connected with tank (10) by the card post that is fixed on tank bottom inwall.
Natural pond liquid refluxes by being connected to natural pond liquor collecting device (5,26) pump provides pressure, and at each fermentation unit (1,19) manhole cover (11) inner tip is installed the shower (13) that radius is manhole cover disc 1/3 a radius annular, shower (13) diameter is less than 10cm, and it is the through hole of 1-2mm that the surface has 3 row's diameters.The bottom of the inner bag (9) of fermentation unit (1,19) is a reticulated structure, and liquid can flow to base (8), places the filtrate steel silk screen of an aperture less than 1cm at the base (8) and the joint of inner bag (9).The filtrate steel silk screen is installed in natural pond liquor collecting device (5,26) bottom, and the grid diameter is less than 1mm, and fluid inlet is positioned at the bottom of liquid outlet, and filter screen is positioned between the two, and a bigbore valve is installed bottom, is used to discharge the natural pond slag; Feeding unit adopts the auger travelling belt; Drawing mechanism is placed near the feeding unit, and traveling transport (2) is sling and is transported to the discharging place behind the inner bag (9) in the fermentation unit (1,19), is placed on the drawing mechanism, fixing after, rotate drawing mechanism, the raw material that will ferment is afterwards toppled over.
Pig farm at ten thousand scales, be about 5000 market pigs according to actual breeding stock, produce 2 kilograms in fresh and dried excrement every day by every market pig, every day is produced fresh and dried excrement about 10 tons (raw material 2) altogether on then whole pig farm, is about 85% through the water ratio of measuring these fresh and dried excrement.Carbon-nitrogen ratio is about 13, if the crop material (raw material) that adds is straw (raw material 1), according to the water ratio of straw be about 13% and carbon-nitrogen ratio be about 65, the fermentation raw material carbon-nitrogen ratio optimum value 25 that technology proposes according to the present invention, solid concentration optimum value 20% is calculated, need to add 2 tons of straw, make the whole water ratio of biogas fermentation raw material be about 20% and carbon-nitrogen ratio be about 25, weight by the fermentation raw material total amount adds inoculum (being methane-generating pit mud or sludge of sewage treatment plant) 20% calculating, about 13 tons of fermented product gross weight, the about 10m3 of cumulative volume is so each fermentation unit design volume is 10m
3By best fermentation period 25 days, then need to make 25 of fermentation units, need to be equipped with 1 of turnover fermentation unit in addition, need 26 fermentation units altogether; Each fermentation unit is pressed diameter and is equated that with high determine inner bag diameter and highly about 2.5m of fermentation unit, so factory building (fermentation plant) length is about 130m, width is about 7.5m.
Fermentation equipment comprises that 26 cover fermentation units (see accompanying drawing 11, in the accompanying drawing 2 19 and accompanying drawing 3 in 19,20,21,22,23,24, shown in 25,26), 1 cover traveling transport (2), 1 cover feeding unit (3), 1 cover drawing mechanism (4), 1 cover natural pond liquor collecting device (5,26), 1 cover natural pond liquid reflux (6) and 1 overlap sludge gas collecting device (7,25), wherein every cover fermentation unit comprises interface and the pipeline with natural pond liquor collecting device (5,26), natural pond liquid reflux (6) and sludge gas collecting device (7,25).I.e. 35 ℃ of fermentations of temperature during the fermentation of fermented product is adopted in the fermentation unit in this example, its temperature control system adopts temperature control and measuring instrument and element commonly used on the market.
The charging position of fermented product generally is controlled at from 10cm place, the inner bag of fermentation unit 1 (9) upper edge, manhole cover (11) and rotating stops to feed on the bonnet, it is realized and being connected of tank by blocking post, the sealing of tank topped up with water, connect natural pond liquor collecting device (5 simultaneously, 26), the interface and the pipeline of natural pond liquid reflux (6) and sludge gas collecting device (7,25), open related valve.Natural pond liquid in the fermentation beginning secondary fermentation device flows automatically to natural pond liquor collecting device (5,26) by pressure difference, and the biogas of generation can enter sludge gas collecting device (7,25) after surpassing sludge gas collecting device (7,25) pressure.The upper end of natural pond liquid holding tank (5) connects by pipeline and sludge gas collecting device (7,25), natural pond flow container internal pressure balance and keep anaerobic environment when guaranteeing to reflux.Backflow natural pond liquid evenly sprays to fermentation raw material from the fermentor tank top, can increase contacting of various microorganisms and fermentation raw material by refluxing.In whole fermentation period, the control fermentation time was an one-period for 20-30 days, and the control leavening temperature is 33 ℃-37 ℃, adjusted the pH to 6.8-7.4 (for example by add the pH that liming is regulated phegma or fermented product in phegma) of fermented product.
Above example is only unrestricted in order to technical scheme of the present invention to be described, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is made amendment or is replaced on an equal basis, and does not break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the claim scope of the present invention.
Claims (2)
1. the technology of a preparing marsh gas by solid fermentation, it includes the system of the preparing marsh gas by solid fermentation of one or more groups biogas fermentation unit at least forming, and also comprises the pre-treatment step of the raw material for preparing described biogas, it is characterized in that:
(1) will rub the stalks of the farm crop after tearing, with behind the described stalk of former natural pond liquid wetting of methane-generating pit stack retting system 3-7 days, the leavening temperature of control stockpile is 33-37 ℃, above and heap temperature begins decline by maximum to stockpile temperature to 60 degree, visible white microorganisms stops the system of macerating in windrow, obtains fermentation raw material 1;
(2) with the fresh and dried excrement dirt in the livestock and poultry feces in the pond stack retting 3-5 days, the leavening temperature of control stockpile is 33-37 ℃, and extremely described stockpile color becomes chocolate by yellow, makes the pH to 6.8-7.4 of this stockpile, keep the relatively stable of this pH value, obtain fermentation raw material 2 to the stack retting end;
(3) be that 20-30 is the amount mixing step 1 of benchmark by carbon-nitrogen ratio) fermentation raw material 1 and the step 2 of gained) fermentation raw material 2 of gained, press the 20-40% inoculation methane-generating pit mud or the sludge of sewage treatment plant of fermentation raw material 1 and fermentation raw material 2 gross weights, in the fermentation unit during the fermentation of packing into after mixing is equipped, the control fermentation period is 20-30 days, the control leavening temperature is 33 ℃-37 ℃, adjusts the pH to 7 of fermented product.
2. an equipment special that is applied to the described preparing marsh gas by solid fermentation technology of claim 1 is characterized in that, described equipment special comprises 20-30 single independently fermentation unit (1,19,20,21,22,23,24,25,26), traveling transport (2), feeding unit (3), drawing mechanism (4), natural pond liquor collecting device (5,26), natural pond liquid reflux (6) and sludge gas collecting device (7,25) constitute; The main body of described fermentation unit (1,19,20,21,22,23,24,25,26) is cylindrical, and its underpart is taper, and it also comprises following feature:
A, each fermentation unit (1,19,20,21,22,23,24,25,26) are made up of fixed part base (8), moving portion inner bag (9) and mobile manhole cover (11), base (8) lower end inner support inner bag (9), and connect natural pond liquid take-off equipment (5); Manhole cover (11) is placed in the tank (10) of base (8) upper end, connects sludge gas collecting device (7,25) and natural pond liquid reflux (6);
The lower end of B, each fermentation unit (1,19,20,21,22,23,24,25,26) links to each other with natural pond liquor collecting device (5,26) by base (8), utilizes pressure official post natural pond liquid to flow automatically to natural pond liquor collecting device (5,26); Each fermentation unit (1,19,20,21,22,23,24,25,26) upper end links to each other with natural pond liquid reflux (6) by manhole cover (11) and sludge gas collecting device (7,25), it is in the above tank (10) of 40cm that manhole cover (11) is placed on the degree of depth, and having natural pond liquid return port (12) in the top middle portion of manhole cover (11), its side has biogas delivery outlet (14), is connected respectively to gas storage holder and liquid storage tank;
C, described tank (10) are the U type, and groove depth is 40mm, and described manhole cover (11) is installed on the base (8), and manhole cover (11) is connected with tank (10) by the card post that is fixed on tank bottom inwall;
D, each fermentation unit (1,19,20,21,22,23,24,25,26) manhole cover (11) inner tip is installed the shower (13) that radius is manhole cover disc 1/3 a radius annular, and the diameter of shower (13) is less than 10cm, and it is the through hole of 1-2mm that its surface has 3 row's diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102730934A CN101717794B (en) | 2009-12-08 | 2009-12-08 | Process and equipment for preparing marsh gas by solid fermentation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102730934A CN101717794B (en) | 2009-12-08 | 2009-12-08 | Process and equipment for preparing marsh gas by solid fermentation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101717794A true CN101717794A (en) | 2010-06-02 |
| CN101717794B CN101717794B (en) | 2012-04-18 |
Family
ID=42432433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102730934A Expired - Fee Related CN101717794B (en) | 2009-12-08 | 2009-12-08 | Process and equipment for preparing marsh gas by solid fermentation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101717794B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757980A (en) * | 2012-07-30 | 2012-10-31 | 深圳市海吉星环保有限责任公司 | Method for producing methane through combination of perishable organic wastes and straws |
| CN102795751A (en) * | 2011-05-26 | 2012-11-28 | 刘佩勇 | Technology for making biogas by performing dry fermentation on excrement of urban people |
| CN102876565A (en) * | 2012-09-29 | 2013-01-16 | 中国农业科学院蔬菜花卉研究所 | Fermentation type carbon dioxide generation device for greenhouse crops |
| CN104261926A (en) * | 2014-10-23 | 2015-01-07 | 农业部南京农业机械化研究所 | Horizontal spiral mixing type straw compost generating device |
| CN104694375A (en) * | 2014-12-23 | 2015-06-10 | 李世峰 | Wet-dry two-step biogas fermentation device and method |
| CN105420284A (en) * | 2015-12-17 | 2016-03-23 | 广西壮族自治区林业科学研究院 | Method for preparing biogas by rice straw |
| CN105670910A (en) * | 2016-03-30 | 2016-06-15 | 农业部沼气科学研究所 | Household semicontinuous straw anaerobic fermentation device |
| CN107118952A (en) * | 2016-08-27 | 2017-09-01 | 农业部沼气科学研究所 | High concentration multi-element material mixing anaerobic reaction test device |
| CN108467170A (en) * | 2018-04-23 | 2018-08-31 | 营口同方能源技术有限公司 | Fermentation tank and the dry type anaerobic fermentation system and method that domestic waste and municipal sludge are handled comprising its collaboration |
| CN111763106A (en) * | 2020-07-15 | 2020-10-13 | 安徽大学 | Construction mode of green energy ecological town |
| CN112028426A (en) * | 2020-08-25 | 2020-12-04 | 宿州信达养殖有限公司 | Pig manure biogas fermentation treatment equipment |
-
2009
- 2009-12-08 CN CN2009102730934A patent/CN101717794B/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102795751A (en) * | 2011-05-26 | 2012-11-28 | 刘佩勇 | Technology for making biogas by performing dry fermentation on excrement of urban people |
| CN102757980A (en) * | 2012-07-30 | 2012-10-31 | 深圳市海吉星环保有限责任公司 | Method for producing methane through combination of perishable organic wastes and straws |
| CN102757980B (en) * | 2012-07-30 | 2014-04-09 | 深圳市海吉星环保有限责任公司 | Method for producing methane through combination of perishable organic wastes and straws |
| CN102876565A (en) * | 2012-09-29 | 2013-01-16 | 中国农业科学院蔬菜花卉研究所 | Fermentation type carbon dioxide generation device for greenhouse crops |
| CN104261926A (en) * | 2014-10-23 | 2015-01-07 | 农业部南京农业机械化研究所 | Horizontal spiral mixing type straw compost generating device |
| CN104694375A (en) * | 2014-12-23 | 2015-06-10 | 李世峰 | Wet-dry two-step biogas fermentation device and method |
| CN105420284A (en) * | 2015-12-17 | 2016-03-23 | 广西壮族自治区林业科学研究院 | Method for preparing biogas by rice straw |
| CN105420284B (en) * | 2015-12-17 | 2020-04-10 | 广西壮族自治区林业科学研究院 | Method for preparing biogas from rice straws |
| CN105670910A (en) * | 2016-03-30 | 2016-06-15 | 农业部沼气科学研究所 | Household semicontinuous straw anaerobic fermentation device |
| CN107118952A (en) * | 2016-08-27 | 2017-09-01 | 农业部沼气科学研究所 | High concentration multi-element material mixing anaerobic reaction test device |
| CN108467170A (en) * | 2018-04-23 | 2018-08-31 | 营口同方能源技术有限公司 | Fermentation tank and the dry type anaerobic fermentation system and method that domestic waste and municipal sludge are handled comprising its collaboration |
| CN111763106A (en) * | 2020-07-15 | 2020-10-13 | 安徽大学 | Construction mode of green energy ecological town |
| CN112028426A (en) * | 2020-08-25 | 2020-12-04 | 宿州信达养殖有限公司 | Pig manure biogas fermentation treatment equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101717794B (en) | 2012-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101717794B (en) | Process and equipment for preparing marsh gas by solid fermentation | |
| CN102174586B (en) | Method and device for recycling edible mushroom residues | |
| CN101134687B (en) | Ground pit type high-heat aerobic organisms fermentation odour remover and method for degradation of organic effluvial waste dump fertilizer | |
| CN202081096U (en) | System for producing methane by effectively utilizing straw fermentation | |
| CN102212561B (en) | Processing method for fermenting straws in dry-process and wet-process combined way | |
| CN104384170A (en) | Process and device for biologically treating urban organic refuse and agricultural organic waste | |
| CN101338273A (en) | Home device and method for producing methane by dry-type fermentation of stalks | |
| CN203320008U (en) | Ecological cycle agricultural system based on village waste anaerobic fermentation | |
| CN204171071U (en) | A kind of device being applicable to biological treatment organic garbage of city and agriculture debirs | |
| CN103602580B (en) | Apparatus for producing biogas by utilizing rural multivariate organic waste | |
| CN203602612U (en) | Device for producing marsh gas by using rural multi-element organic wastes | |
| CN103614288A (en) | High-solid anaerobic reaction device and method for organic garbage | |
| CN109055189A (en) | The high-effect biogas production device of one pot type of stalk soiled litter continuous dry fermentation and technique | |
| CN102260019A (en) | Separated two-phase anaerobic fermentation device | |
| CN101629139B (en) | Large-scale solar energy medium-temperature solid-liquid anaerobic fermentation and gas storage device | |
| CN106636216A (en) | Acidification control method for anaerobic fermentation of organic refuse | |
| CN100389097C (en) | Assembled movable manure producing and energy source utilizing apparatus | |
| CN101696426A (en) | Composite material of marsh gas and method for preparing same | |
| CN202107700U (en) | Separate two-phase anaerobic fermentation device | |
| CN201890831U (en) | Greenhouse biogas manure fermenter | |
| CN202017008U (en) | Edible fungus dreg recycling treatment device | |
| CN216890944U (en) | Double-dry fermentation device for waste biomass | |
| CN108410715B (en) | High-solid methane production system for wood fiber raw material and process method thereof | |
| CN201614338U (en) | Device for preparing marsh gas through solid-state fermentation | |
| CN209039466U (en) | The one high-effect biogas production device of pot type of stalk soiled litter continuity dry fermentation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20131208 |