CN102321673A - Method and device for producing biogas by solid organic waste - Google Patents
Method and device for producing biogas by solid organic waste Download PDFInfo
- Publication number
- CN102321673A CN102321673A CN201110213469A CN201110213469A CN102321673A CN 102321673 A CN102321673 A CN 102321673A CN 201110213469 A CN201110213469 A CN 201110213469A CN 201110213469 A CN201110213469 A CN 201110213469A CN 102321673 A CN102321673 A CN 102321673A
- Authority
- CN
- China
- Prior art keywords
- solid
- liquid
- anaerobic fermentation
- flue gas
- treatment
- 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
- C12M45/00—Means for pre-treatment of biological substances
- C12M45/04—Phase separators; Separation of non fermentable material; Fractionation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Genetics & Genomics (AREA)
- Molecular Biology (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Sustainable Development (AREA)
- Biomedical Technology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A method and a device for producing biogas by solid organic wastes. The method comprises the following steps of: a pretreatment step; a solid-liquid separation step; a liquid anaerobic fermentation step; a solid anaerobic fermentation step; a secondary integrated anaerobic fermentation step, and a biogas collection utilization and residue liquid treatment step. The device comprises a solid-liquid separator, a liquid anaerobic fermentation system, a solid anaerobic fermentation system, a secondary integrated anaerobic fermentation reactor, a gas collection and utilization system, and a biogas residue liquid treatment system; the solid-liquid separator is connected with the liquid anaerobic fermentation system and the solid anaerobic fermentation system respectively; the liquid anaerobic fermentation system and the solid anaerobic fermentation system are connected with the secondary integrated anaerobic fermentation reactor respectively; the secondary integrated anaerobic fermentation reactor is connected with the gas collection and utilization system and the biogas residue liquid treatment system respectively. The invention realizes the harmless treatment and energy utilization of organic wastes.
Description
Technical field
The present invention relates to a kind of solid organic castoff treatment process, particularly a kind of method and apparatus of solid organic castoff anaerobically fermenting system biological flue gas.
Background technology
Sustained and rapid development along with China's economy; Organic solid castoff comprises that domestic waste, agricultural wastes, intensification feces of livestock and poultry, sewage sludge equal yield line are huge; And composition is very complicated; Often contain environmental pollutant such as a large amount of moisture, volatile matter, pathogenic agent, parasitic ovum and heavy metal, can cause serious harm to nature and social environment if deal with improperly.Like simple air storage, land occupation destroys view, and the oxious component in the waste can carry out airborne transmission through blowing, or invades soil and underground water source, polluted river etc. through raining.
To the organic solid castoff characteristics, the main method that adopts at present has landfill, burning, anaerobically fermenting etc.Landfill method is handled solid organic castoff, and process is very simple, but needs a large amount of freight charges and landfill place.Along with Increase of population and development of urbanization, the soil that can be used for landfill reduces, and the landfill of refuse receives the restriction in place; In addition, waste decomposes behind landfill and rots to emit a large amount of gases such as methane, produces Greenhouse effect; And, through sunlight exposure and rainwater leach liquor and leaching vat meeting polluted underground water, cause the eutrophication of water body, bring secondary pollution for the water resources of critical shortage; For burning disposal, it is apparatus expensive not only, and maintenance cost is high, simultaneously, also can produce the very high problems such as organic pollutant Dioxins of some toxicity in the burning process, and government and street levels is also held careful attitude to burning disposal at present.It is to utilize the Decomposition of mikrobe to make its innoxious energy, food, feed and fertilizer etc. of being converted into that Unareobic fermentation is handled solid organic castoff, in treating refuse, reaches recycling and obtains biological flue gas.
The anaerobically fermenting of organic solid castoff just is divided into wet-fermentation and dry method fermentation according to total solids (TS) content.Wet-fermentation is meant the solid holdup of charging less than 15%, and the dry method anaerobically fermenting is meant that the solid holdup of charging is 20%-50%.The wet type anaerobic fermentation technology is ripe relatively, and all more perfect in design, operational management, but can produce a large amount of natural pond liquid after the fermentation, deals with improperly and causes secondary pollution easily.The dry method relative wet-fermentation that ferments has more advantage; Little such as floor space, energy consumption is little, working cost is low, process need not to add fresh water; Liquid generation little, pre-treatment in natural pond simply need not to remove sand, can not produce scum silica frost and deposition etc. after the fermentation ends, more and more receives publicity.But, on extensive, industriallization engineering, use at present and also have difficulties because there is the difficult shortcoming of input and output material difficulty, mass transfer, heat transfer in the dry method fermentation system.
Application number is " 201010130966 "; Name is called the Chinese invention patent application of " method that a kind of municipal domestic organic refuse enhanced hydrolysis and anaerobic digestion produce biological flue gas "; It adopts enhanced hydrolysis and anaerobically fermenting to produce the method for biological flue gas, can realize the recovery energy of organic waste, but its technology needs the organism fragmentation is reduced to below the 1cm; Raw material after the fragmentation is put into the raw material equalizing tank; And needing to add water or fermented liquid adjusting raw material solid concentration, the solids concn of control raw material is lower than 15%, so it still can't overcome the drawback of wet-fermentation technology.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method and apparatus of solid organic castoff system biological flue gas; Can overcome the technological interpolation fresh water that needs of wet-fermentation in the prior art; Produce a large amount of natural ponds liquid after the fermentation ends; Be prone to cause deficiencies such as secondary pollution and dry method fermentation input and output material difficulty, mass transfer, heat transfer difficulty, to realize organic waste harmless treatment and recovery energy.
To achieve these goals, the invention provides a kind of method of solid organic castoff system biological flue gas, wherein, may further comprise the steps:
A, pre-treatment step, to organic waste collect, sorting and/or fragmentation, and in advance the mud that is used for anaerobically fermenting is inoculated domestication;
B, solid-liquid separation step, the organic waste that will pass through after said pre-treatment step is handled directly carries out solid-liquid separation;
C, liquid anaerobically fermenting step are carried out anaerobically fermenting with the preparation biological flue gas with the isolated liquid starting material of said solid-liquid separation step, and are collected prepared biological flue gas;
D, solid anaerobic fermentation step are carried out anaerobically fermenting with the preparation biological flue gas with the isolated solid material of said solid-liquid separation step, and are collected prepared biological flue gas;
E, secondary integral anaerobic fermentation step continue fermentation with the preparation biological flue gas with the raw material after said liquid anaerobically fermenting step and the said solid anaerobic fermentation step process, and collect prepared biological flue gas;
F, biological flue gas utilization and slag liquid treatment step are with the slag liquid that the biological flue gas of collecting in said liquid anaerobically fermenting step, said solid anaerobic fermentation step and the said secondary integral anaerobic fermentation step utilizes after purifying and the said secondary integral anaerobic of emission treatment fermentation step produces.
The method of above-mentioned solid organic castoff system biological flue gas, wherein, said liquid anaerobically fermenting step comprises:
That c1, liquid pre-treatment heating steps, the liquid starting material after said solid-liquid separation step separated carry out is modified, inoculate, preheat;
C2, anaeration in normal temperature fermentation step, the liquid starting material that will pass through after said liquid pre-treatment heating steps heats carries out the anaeration in normal temperature fermentation with the preparation biological flue gas.
The method of above-mentioned solid organic castoff system biological flue gas; Wherein, Said liquid pre-treatment heating steps comprises, the liquid starting material after the said solid-liquid separation step is delivered to liquid pre-treatment equalizing tank, carries out pre-treatment, modified and inoculation; Controlling said liquid pre-treatment equalizing tank temperature is 20 ℃～35 ℃, and the time that said liquid starting material stops in said liquid pre-treatment equalizing tank is 1～1.5 day.
The method of above-mentioned solid organic castoff system biological flue gas; Wherein, Said anaeration in normal temperature fermentation step comprises, the raw material behind the said liquid pre-treatment heating steps is pumped into carry out the anaeration in normal temperature fermentation in the anaeration in normal temperature fermentation reactor, and control anaeration in normal temperature fermentation reaction actuator temperature is 30 ℃～38 ℃; PH is 6～8, and the residence time is 10～35 days.
The method of above-mentioned solid organic castoff system biological flue gas, wherein, said solid anaerobic fermentation step comprises:
D1, solid pre-treatment heating steps;
D2, high-temperature anaerobic fermentation step, the solid material after said solid pre-treatment heating steps heated are carried out high-temperature anaerobic fermentation with the preparation biological flue gas; And
D3, secondary solid-liquid separation step are carried out the secondary solid-liquid separation to the material after the said high-temperature anaerobic fermentation step, and the liquid after the separation continues fermentation by said secondary integral anaerobic fermentation step.
The method of above-mentioned solid organic castoff system biological flue gas; Wherein, Said solid pre-treatment heating steps comprises: the solid material after the said solid-liquid separation step is delivered to solid heat pre-treatment pond; Heat, modified, controlling said solid heat pre-treatment pond temperature is 50 ℃～70 ℃, said solid material residence time in heating the pond is 1～2 day.
The method of above-mentioned solid organic castoff system biological flue gas; Wherein, Said high-temperature anaerobic fermentation step comprises; Solid material after said solid pre-treatment heating steps handled is delivered in the solid thermophilic fermentation reactor drum and carries out high-temperature anaerobic fermentation, and the temperature of controlling said solid thermophilic fermentation reactor drum is 50 ℃～60 ℃, and the pH value is 6.5～7.8; The residence time is 15～25 days, and makes said solid material equal the time that said solid material stops from the time that an end of said solid thermophilic fermentation reactor drum runs to the other end of said solid thermophilic fermentation reactor drum in said solid thermophilic fermentation reactor drum.
In order to realize above-mentioned purpose better; The present invention also provides a kind of equipment of solid organic castoff system biological flue gas; Wherein, Comprise solid-liquid separating machine, liquid anaerobic fermentation system, solid anaerobic fermentation system, secondary integral anaerobic fermentation reactor, collection and confinement of gases and utilize system and the biogas residue liquid treatment system; Said solid-liquid separating machine is connected with said solid anaerobic fermentation system with said liquid anaerobic fermentation system respectively; Said liquid anaerobic fermentation system and said solid anaerobic fermentation system are connected with said secondary integral anaerobic fermentation reactor respectively, and said secondary integral anaerobic fermentation reactor is respectively with said collection and confinement of gases and utilize system to be connected with said biogas residue liquid treatment system.
The equipment of above-mentioned solid organic castoff system biological flue gas; Wherein, Said liquid anaerobic fermentation system comprises liquid pre-treatment heating bath and anaeration in normal temperature fermentation reactor; The opening for feed of said liquid pre-treatment heating bath is connected with the liquid exit of said solid-liquid separating machine, and said anaeration in normal temperature fermentation reactor is connected with said secondary integral anaerobic fermentation reactor with said liquid pre-treatment heating bath respectively.
The equipment of above-mentioned solid organic castoff system biological flue gas; Wherein, Said solid anaerobic fermentation system comprises solid mixing and e Foerderanlage, solid pre-treatment heating bath, solid thermophilic fermentation reactor drum and secondary solid-liquid separating machine; Said solid mixes and e Foerderanlage is connected with said solid pre-treatment heating bath with said solid-liquid separating machine respectively; Said solid thermophilic fermentation reactor drum mixes with said solid pre-treatment heating bath, said secondary solid-liquid separating machine, said secondary integral anaerobic fermentation reactor and said solid respectively and e Foerderanlage is connected, and said secondary solid-liquid separating machine is connected with said secondary integral anaerobic fermentation reactor.
Technique effect of the present invention is: the present invention can handle solid organic castoff anaerobically fermenting system biological flue gas, and process need not to add fresh water, and systematic procedure itself produces heat can supply self energy consumption demand, need not external energy.Preprocessing process is simple, and process operating management is simple, and floor space is little; Natural pond liquid generation is little, and organic clearance is high, and the raw material factor of created gase is high; Both can reduce the pollution of organic waste to environment; Can produce the clean reproducible energy biological flue gas again, can realize the recovery energy of solid waste, have good environment and economic benefit.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Fig. 1 is the method flow diagram of solid organic castoff anaerobically fermenting system biological flue gas of the present invention;
Fig. 2 is the device structure block diagram of solid organic castoff anaerobically fermenting system biological flue gas of the present invention;
Fig. 3 is the device structure synoptic diagram of one embodiment of the invention solid organic castoff anaerobically fermenting system biological flue gas.
Wherein, Reference numeral
1 solid-liquid separating machine
2 liquid anaerobic fermentation systems
21 liquid pre-treatment heating baths
22 anaeration in normal temperature fermentation reactors
3 solid anaerobic fermentation systems
31 solids mix and e Foerderanlage
32 solid pre-treatment heating baths
33 solid thermophilic fermentation reactor drums
34 secondary solid-liquid separating machines
4 secondary integral anaerobic fermentation reactors
5 collection and confinement of gases and utilize system
51 gas-cleaning installations
52 power unit and residual heat using device
6 biogas residue liquid treatment systems
A～f, c1, c2, d1～d3 step
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and principle of work are done concrete description:
Referring to Fig. 1, Fig. 1 is the method flow diagram of solid organic castoff anaerobically fermenting system biological flue gas of the present invention.The method of solid organic castoff system biological flue gas of the present invention may further comprise the steps:
Pre-treatment step a,, to organic waste collect, sorting and/or fragmentation, and in advance the mud that is used for anaerobically fermenting is inoculated domestication;
Solid-liquid separation step b, the organic waste that will pass through after said pre-treatment step is handled directly carries out solid-liquid separation; In the present embodiment, utilize solid-liquid separating machine directly organic waste to be carried out solid-liquid separation, need not to add fresh water and regulate liquid phase total solids level material concentration.Organic waste is divided into efflux of solids and liquid flow, and TS concentration is greater than 30% in the efflux of solids, and TS concentration is between 4～5% in the liquid flow;
Liquid anaerobically fermenting step c carries out anaerobically fermenting with the preparation biological flue gas with the isolated liquid starting material of said solid-liquid separation step, and collects prepared biological flue gas;
Said liquid anaerobically fermenting step c comprises again:
That liquid pre-treatment heating steps c1, the liquid starting material after said solid-liquid separation step separated carry out is modified, inoculate, preheat; Liquid starting material is carried out through being pumped to liquid pre-treatment equalizing tank that desilting is handled and raw material preheats; Be provided with whipping appts in the heating bath; Controlling said liquid pre-treatment equalizing tank temperature is 20 ℃～35 ℃, and the time that said liquid starting material stops in said liquid pre-treatment equalizing tank is 1～1.5 day;
Anaeration in normal temperature fermentation step c2, the liquid starting material that will pass through after said liquid pre-treatment heating steps heats carries out the anaeration in normal temperature fermentation with the preparation biological flue gas.Raw material after above-mentioned pre-treatment heated pumps into anaeration in normal temperature fermentation reactor 22 and carries out the anaeration in normal temperature fermentation, can establish in the anaeration in normal temperature fermentation reactor 22 and stir and the waterpower circulation, with the mass transfer of realizing material, conduct heat evenly; Accomplish anaerobically fermenting organic in the liquid and decompose the generation biological flue gas, control anaeration in normal temperature leavening temperature is 30 ℃～38 ℃, preferred 33 ℃～38 ℃; The pH value is 6～8; Preferred pH value is 6.5～7.8, and residence time of material is 10～35 days, preferred 15～20 days residence time; The inoculation bacterium that initial start stage is fermented as anaeration in normal temperature derives from biogas plant or municipal wastewater treatment plant anaeration in normal temperature is applied flexibly sludge seeding, domestication.
The solid anaerobic fermentation steps d is carried out anaerobically fermenting with the preparation biological flue gas with the isolated solid material of said solid-liquid separation step, and is collected prepared biological flue gas;
Said solid anaerobic fermentation steps d comprises:
Solid pre-treatment heating steps d1; Solid is delivered to solid heat pre-treatment pond through e Foerderanlage after the solid-liquid separation; Heat, modified; Controlling said solid heat pre-treatment pond temperature is 50 ℃～70 ℃; Said solid material residence time in heating the pond is 1～2 day, and said solid heat pre-treatment can be provided with whipping appts in the pond, to strengthen mass transfer, heat transfer;
High-temperature anaerobic fermentation steps d 2, the solid material after said solid pre-treatment heating steps heated are carried out high-temperature anaerobic fermentation with the preparation biological flue gas.Solid materials after e Foerderanlage is delivered in the solid thermophilic fermentation reactor drum 33, can be provided with stirring in the solid thermophilic fermentation reactor drum 33 through preheating, heats, attemperator; Solid material after said solid pre-treatment heating steps handled is delivered in the solid thermophilic fermentation reactor drum 33 and carries out high-temperature anaerobic fermentation; The temperature of controlling said solid thermophilic fermentation reactor drum 33 is 50 ℃～60 ℃; The pH value is 6～8; Preferred pH value 6.5～7.8; Residence time of material 10～25 days, the preferred residence time is 15～25 days, and makes said solid material equal the time that said solid material stops from the time that an end of said solid thermophilic fermentation reactor drum 33 runs to the other end of said solid thermophilic fermentation reactor drum 33 in said solid thermophilic fermentation reactor drum 33.Initial start stage derives from the inoculation of high temperature anaerobic active sludge, the domestication that biogas plant or municipal wastewater treatment plant etc. locate as the inoculation bacterium of high-temperature anaerobic fermentation; Or adopt and to derive from the inoculation of anaeration in normal temperature active sludge, the domestication that biogas plant or municipal wastewater treatment plant etc. locate, the heating mode that increases by 1 ℃ every day progressively rises to high temperature (50 ℃～60 ℃);
Secondary solid-liquid separation step d3 carries out the secondary solid-liquid separation to the material after the said high-temperature anaerobic fermentation step, and the liquid after the separation continues fermentation by said secondary integral anaerobic fermentation step.After the solid phase dry type fermentation ends, solid-liquid separation is carried out in discharging, and the direct compost of solid part, liquid portion get into secondary integral anaerobic fermentation reactor 4 and continue fermentation; After the solid phase dry type fermentation ends, the part of discharging is back to that solid mixes and e Foerderanlage 31 is inoculated, modified, rest part gets into secondary solid-liquid separating machine 34 and carries out the secondary solid-liquid separation.
Secondary integral anaerobic fermentation step e continues fermentation with the preparation biological flue gas with the raw material after said liquid anaerobically fermenting step and the said solid anaerobic fermentation step process, and collects prepared biological flue gas; After the integrated fermentation reaction fermentation ends of secondary, natural pond liquid regularly effluxes, and the natural pond slag gets into the natural pond slag bath and stores; After accomplishing the anaeration in normal temperature fermentation, raw material is delivered to secondary integral anaerobic fermentation reactor 4, and secondary integral anaerobic fermentation reactor 4 is provided with the side whipping appts.In secondary integral anaerobic fermentation reactor 4, can continue fermentation and produce biological flue gas, store natural pond liquid, collection of biological combustion gas, secondary integral anaerobic fermentation reactor 4 can be provided with attemperator, and the pH value is 6～8, and residence time of material is 20～30 days; The natural pond slag is expelled to the natural pond slag bath through biogas residue liquid treatment system 6 after the second order reaction, regularly is transported to farmland fertilization.
Biological flue gas utilizes and slag liquid treatment step f, with the slag liquid that biological flue gas is used after purifying and the emission treatment above-mentioned steps is produced of said liquid anaerobically fermenting step, said solid anaerobic fermentation step and said secondary integral anaerobic fermentation step preparation collection.The collected biological flue gas of each step all gets into the top of secondary integral anaerobic fermentation reactor 4 and stores; This biological flue gas all is used for generating through power unit and residual heat using device 52 after gas-cleaning installation 51 dehydrations, desulfurization, removal of impurities, generating waste-heat is pre-treatment heating bath 21, solid pre-treatment heating bath 32 and anaeration in normal temperature fermentation reactor 22, solid thermophilic fermentation reactor drum 33 temperature raising and maintainings for liquid; Natural pond liquid is partly refluxed in the liquid pre-treatment heating bath 21 in the above-mentioned steps secondary integral anaerobic fermentation reactor 4, inoculates, mass transfer, increases the amount of mikrobe in the charging, the forced fermentation effect.
Referring to Fig. 2 and Fig. 3, Fig. 2 is the device structure block diagram of solid organic castoff anaerobically fermenting system biological flue gas of the present invention, and Fig. 3 is the device structure synoptic diagram of one embodiment of the invention solid organic castoff anaerobically fermenting system biological flue gas.The present invention also provides a kind of support equipment that is applicable to the method for solid organic castoff anaerobically fermenting system biological flue gas of the present invention; Comprise solid-liquid separating machine 1, liquid anaerobic fermentation system 2, solid anaerobic fermentation system 3, secondary integral anaerobic fermentation reactor 4; Also can comprise collection and confinement of gases and utilize system 5 and biogas residue liquid treatment system 6; Said solid-liquid separating machine 1 is connected with said solid anaerobic fermentation system 3 with said liquid anaerobic fermentation system 2 respectively; Said liquid anaerobic fermentation system 2 and said solid anaerobic fermentation system 3 are connected with said secondary integral anaerobic fermentation reactor 4 respectively, said collection and confinement of gases and utilize system 5 to be connected with said secondary integral anaerobic fermentation reactor 4 respectively with said biogas residue liquid treatment system 6.In the present embodiment, this collection and confinement of gases and utilize system 5 to comprise gas-cleaning installation 51 and power unit and residual heat using device 52.Wherein, Said liquid anaerobic fermentation system 2 comprises liquid pre-treatment heating bath 21 and anaeration in normal temperature fermentation reactor 22; In the said liquid pre-treatment heating bath 21 whipping appts can be set; The opening for feed of said liquid pre-treatment heating bath 21 is connected with the liquid exit of said solid-liquid separating machine 1, and said anaeration in normal temperature fermentation reactor 22 is connected with said secondary integral anaerobic fermentation reactor 4 with said liquid pre-treatment heating bath 21 respectively.Said solid anaerobic fermentation system 3 comprises that solid mixes and e Foerderanlage 31, solid pre-treatment heating bath 32, solid thermophilic fermentation reactor drum 33 and secondary solid-liquid separating machine 34; Said solid mixes and e Foerderanlage 31 is connected with said solid pre-treatment heating bath 32 with said solid-liquid separating machine 1 respectively; Said solid thermophilic fermentation reactor drum 33 mixes with said solid pre-treatment heating bath 32, said secondary solid-liquid separating machine 34, said secondary integral anaerobic fermentation reactor 4 and said solid respectively and e Foerderanlage 31 is connected, and said secondary solid-liquid separating machine 34 is connected with said secondary integral anaerobic fermentation reactor 4.
Specify method and apparatus of the present invention with two concrete embodiment below.
Embodiment one:
Raw material is for deriving from diary farm, A city cow manure, and the anaerobically fermenting inoculum derives from the anaerobic activated sludge of biogas plant.
In anaeration in normal temperature fermentation reactor 22, adopt biogas plant's anaeration in normal temperature active sludge to inoculate domestication earlier.
In solid thermophilic fermentation reactor drum 33, adopt biogas plant's high temperature anaerobic active sludge to inoculate domestication.
After the inoculation domestication is accomplished, carry out the fermentative processing of cattle farm cow dung according to the following steps:
(1) with the ight soil of cattle farm, after delivering to solid-liquid separating machine 1, e Foerderanlage carries out solid-liquid separation by the forklift collection;
(2) solid-liquid separating machine 1 liquid separated is heated through being pumped to liquid pre-treatment heating bath 21, the temperature of controlled liq pre-treatment heating bath 21 is 22 ℃, and fully stirs, and makes homogeneous heating.
(3) liquid starting material after above-mentioned the heating is pumped into carry out anaeration in normal temperature fermentation in the anaeration in normal temperature fermentation reactor 22, accomplish organism anaerobically fermenting system biological flue gas in the liquid, controlling the anaeration in normal temperature leavening temperature is 33 ℃, and pH is 6.8, and residence time of material is 15 days;
(4) after the fermentation of completing steps (3) anaeration in normal temperature, the therefrom warm anaerobic fermentation reactor 22 of liquid starting material is delivered to secondary integral anaerobic fermentation reactor 4, the system of further fermenting biological flue gas.Secondary integral anaerobic fermentation reactor 4 does not heat, only is incubated, and the waste heat in the utilization in the step reaction, the residence time of material of control secondary integral anaerobic fermentation reactor 4 is 30 days, the pH value is 6.8;
(5) solid-liquid separating machine 1 solid separated is fallen into solid pre-treatment heating bath 32 by gravity, control solid pre-treatment heating bath 32 temperature are 60 ℃, and fully stir, and make homogeneous heating.
(6) solid material after above-mentioned the heating is delivered to solid thermophilic fermentation reactor drum 33 through lobed rotor pump, the system of fermenting biological flue gas.Establish whipping appts in the solid thermophilic fermentation reactor drum 33; Make in the solid thermophilic fermentation reactor drum 33 raw materials equal the residence time of material in solid thermophilic fermentation reactor drum 33 from the time that entrance end runs to discharge end; Temperature is 55 ℃ in the control solid thermophilic fermentation reactor drum 33, and the pH value is 6.5;
(7) after the fermentation of above-mentioned steps (6) dry type, the part backflow inoculation of solid thermophilic fermentation reactor drum 33 dischargings, modified, another part is after solid-liquid separation, and isolated solid dung, isolated liquid are delivered to secondary integral anaerobic fermentation reactor 4;
(8) in secondary integral anaerobic fermentation reactor 4, after the completion fermentation, drain into farmland fertilization outside natural pond liquid is regular, the natural pond slag gets into the natural pond slag bath stored for future use of biogas residue liquid treatment system 6.
(9) the top air storage symphysis of the top tracheae of anaeration in normal temperature fermentation reactor 22, solid thermophilic fermentation reactor drum 33 and secondary integral anaerobic fermentation reactor 4 is logical, to collect the biological flue gas of above-mentioned each step preparation.
(10) be collected in biological flue gas in the secondary integral anaerobic fermentation reactor 4 after gas-cleaning installation 51 desulfurization, dehydration, removal of impurities; Through power unit and bootstrap system 52 generatings, generating waste-heat pre-treatment heating bath 21, solid pre-treatment heating bath 32 and anaeration in normal temperature fermentation reactor 22,33 heating of solid thermophilic fermentation reactor drum for liquid heats.
Embodiment two:
Raw material is to derive from the meal kitchen organic waste of B city through sorting, and the anaerobically fermenting inoculum derives from the anaerobic activated sludge of municipal wastewater treatment plant.
In anaeration in normal temperature fermentation reactor 22, adopt the anaeration in normal temperature active sludge inoculation domestication of above-mentioned municipal wastewater treatment plant;
In solid thermophilic fermentation reactor drum 33, adopt the anaerobic activated sludge inoculation domestication of above-mentioned municipal wastewater treatment plant, the heating mode that increases by 1 ℃ every day progressively rises to high temperature (58 ℃), after domestication is accomplished as the inoculum of solid thermophilic fermentation reactor drum 33.
After domestication inoculation is accomplished, carry out meal kitchen, the city organic garbage anaerobic fermentation system biological flue gas after the sorting according to the following steps:
(1) utilize solid-liquid separating machine 1 will collect and sorting, fragmentation after changing food waste carry out solid-liquid separation;
(2) the changing food waste liquid portion after the above-mentioned solid-liquid separation is flow to liquid pre-treatment heating bath 21 certainly;
(3) part natural pond liquid in the secondary integral anaerobic fermentation reactor 4 is back to liquid pre-treatment heating bath 21, inoculate with above-mentioned steps (2), modified, preheat, and fully stir, temperature is 25 ℃ in the control heating bath;
(4) solid part after the above-mentioned solid-liquid separation is delivered to solid pre-treatment heating bath 32;
(5) solids backflow to the solid with solid thermophilic fermentation reactor drum 33 output sections mixes and e Foerderanlage 31, carries out the pre-treatment inoculation, preheats with above-mentioned steps (4), and fully stir, and temperature is 60 ℃ in the control heating bath;
(6) raw material after aforesaid liquid pre-treatment heating bath 21 is heated pumps into anaeration in normal temperature fermentation reactor 22 and carries out anaeration in normal temperature fermentation system biological flue gas, and 22 temperature of control anaeration in normal temperature fermentation reactor are 38 ℃, and the pH value is 7.0, and residence time of material is 25 days;
(7) solid material after above-mentioned solid pre-treatment heating bath 32 is heated is pumped in the solid thermophilic fermentation reactor drum 33 through field spider and carries out high-temperature anaerobic fermentation system biological flue gas; The temperature of control solid thermophilic fermentation reactor drum 33 is 58 ℃; The pH value is 7.2, and residence time of material is 22 days;
(8) after anaeration in normal temperature fermentation reactor 22 fermentation ends, discharging gets into secondary integral anaerobic fermentation reactor 4 through drawing mechanism, and secondary integral anaerobic fermentation reactor 4 is not established and heated; Only establish attemperator, establish side and stir, strengthen mass transfer and broken shell; The pH value is 7.2, residence time of material 55 days;
(9) after solid thermophilic fermentation reactor drum 33 fermentation ends, material carries out the secondary solid-liquid separation through secondary solid-liquid separating machine 34, and the liquid after the separation pumps into secondary integral anaerobic fermentation reactor 4, the direct compost of solid;
(10) the natural pond liquid fertilising in the secondary integral anaerobic fermentation reactor 4 regularly effluxes season, carries out farmland fertilization, and the natural pond slag gets into the natural pond slag bath of biogas residue liquid treatment system 6 and stores, and applies fertilizer and discharges external application season.
The present invention can handle solid organic castoff anaerobically fermenting system biological flue gas, and process need not to add fresh water, and fermenting process itself produces heat can supply self energy consumption demand, need not external energy.Preprocessing process is simple, and process operating management is easy, and floor space is little; Natural pond liquid generation is little, and organic clearance is high, and the raw material factor of created gase is high; Both can reduce the pollution of organic waste to environment; Can produce the clean reproducible energy biological flue gas again, can realize the recovery energy of solid waste, have good environment and economic benefit.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (10)
1. the method for a solid organic castoff system biological flue gas is characterized in that, may further comprise the steps:
A, pre-treatment step, to organic waste collect, sorting and/or fragmentation, and in advance the mud that is used for anaerobically fermenting is inoculated domestication;
B, solid-liquid separation step, the organic waste that will pass through after said pre-treatment step is handled directly carries out solid-liquid separation;
C, liquid anaerobically fermenting step are carried out anaerobically fermenting with the preparation biological flue gas with the isolated liquid starting material of said solid-liquid separation step, and are collected prepared biological flue gas;
D, solid anaerobic fermentation step are carried out anaerobically fermenting with the preparation biological flue gas with the isolated solid material of said solid-liquid separation step, and are collected prepared biological flue gas;
E, secondary integral anaerobic fermentation step continue fermentation with the preparation biological flue gas with the raw material after said liquid anaerobically fermenting step and the said solid anaerobic fermentation step process, and collect prepared biological flue gas;
F, biological flue gas utilization and slag liquid treatment step are with the slag liquid that the biological flue gas of collecting in said liquid anaerobically fermenting step, said solid anaerobic fermentation step and the said secondary integral anaerobic fermentation step utilizes after purifying and the said secondary integral anaerobic of emission treatment fermentation step produces.
2. the method for solid organic castoff system biological flue gas as claimed in claim 1 is characterized in that, said liquid anaerobically fermenting step comprises:
That c1, liquid pre-treatment heating steps, the liquid starting material after said solid-liquid separation step separated carry out is modified, inoculate, preheat;
C2, anaeration in normal temperature fermentation step, the liquid starting material that will pass through after said liquid pre-treatment heating steps heats carries out the anaeration in normal temperature fermentation with the preparation biological flue gas.
3. the method for solid organic castoff system biological flue gas as claimed in claim 2; It is characterized in that; Said liquid pre-treatment heating steps comprises, the liquid starting material after the said solid-liquid separation step is delivered to liquid pre-treatment equalizing tank, carries out pre-treatment, modified and inoculation; Controlling said liquid pre-treatment equalizing tank temperature is 20 ℃～35 ℃, and the time that said liquid starting material stops in said liquid pre-treatment equalizing tank is 1～1.5 day.
4. the method for solid organic castoff system biological flue gas as claimed in claim 2; It is characterized in that; Said anaeration in normal temperature fermentation step comprises, the raw material behind the said liquid pre-treatment heating steps is pumped into carry out the anaeration in normal temperature fermentation in the anaeration in normal temperature fermentation reactor, and control anaeration in normal temperature fermentation reaction actuator temperature is 30 ℃～38 ℃; The pH value is 6～8, and the residence time is 10～35 days.
5. like the method for claim 1,2,3 or 4 described solid organic castoff system biological flue gas, it is characterized in that said solid anaerobic fermentation step comprises:
D1, solid pre-treatment heating steps;
D2, high-temperature anaerobic fermentation step, the solid material after said solid pre-treatment heating steps heated are carried out high-temperature anaerobic fermentation with the preparation biological flue gas; And
D3, secondary solid-liquid separation step are carried out the secondary solid-liquid separation to the material after the said high-temperature anaerobic fermentation step, and the liquid after the separation continues fermentation by said secondary integral anaerobic fermentation step.
6. the method for solid organic castoff system biological flue gas as claimed in claim 5; It is characterized in that; Said solid pre-treatment heating steps comprises: the solid material after the said solid-liquid separation step is delivered to solid heat pre-treatment pond; Heat, modified, controlling said solid heat pre-treatment pond temperature is 50 ℃～70 ℃, said solid material residence time in heating the pond is 1～2 day.
7. the method for solid organic castoff system biological flue gas as claimed in claim 5; It is characterized in that; Said high-temperature anaerobic fermentation step comprises; Solid material after said solid pre-treatment heating steps handled is delivered in the solid thermophilic fermentation reactor drum and carries out high-temperature anaerobic fermentation, and the temperature of controlling said solid thermophilic fermentation reactor drum is 50 ℃～60 ℃, and the pH value is 6.5～7.8; The residence time is 15～25 days, and makes said solid material equal the time that said solid material stops from the time that an end of said solid thermophilic fermentation reactor drum runs to the other end of said solid thermophilic fermentation reactor drum in said solid thermophilic fermentation reactor drum.
8. the equipment of a solid organic castoff system biological flue gas; It is characterized in that; Comprise solid-liquid separating machine, liquid anaerobic fermentation system, solid anaerobic fermentation system, secondary integral anaerobic fermentation reactor, collection and confinement of gases and utilize system and the biogas residue liquid treatment system; Said solid-liquid separating machine is connected with said solid anaerobic fermentation system with said liquid anaerobic fermentation system respectively; Said liquid anaerobic fermentation system and said solid anaerobic fermentation system are connected with said secondary integral anaerobic fermentation reactor respectively, and said secondary integral anaerobic fermentation reactor is respectively with said collection and confinement of gases and utilize system to be connected with said biogas residue liquid treatment system.
9. the equipment of solid organic castoff system biological flue gas as claimed in claim 8; It is characterized in that; Said liquid anaerobic fermentation system comprises liquid pre-treatment heating bath and anaeration in normal temperature fermentation reactor; The opening for feed of said liquid pre-treatment heating bath is connected with the liquid exit of said solid-liquid separating machine, and said anaeration in normal temperature fermentation reactor is connected with said secondary integral anaerobic fermentation reactor with said liquid pre-treatment heating bath respectively.
10. the equipment of solid organic castoff system biological flue gas as claimed in claim 8; It is characterized in that; Said solid anaerobic fermentation system comprises solid mixing and e Foerderanlage, solid pre-treatment heating bath, solid thermophilic fermentation reactor drum and secondary solid-liquid separating machine; Said solid mixes and e Foerderanlage is connected with said solid pre-treatment heating bath with said solid-liquid separating machine respectively; Said solid thermophilic fermentation reactor drum mixes with said solid pre-treatment heating bath, said secondary solid-liquid separating machine, said secondary integral anaerobic fermentation reactor and said solid respectively and e Foerderanlage is connected, and said secondary solid-liquid separating machine is connected with said secondary integral anaerobic fermentation reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110213469.XA CN102321673B (en) | 2011-07-28 | 2011-07-28 | Method for producing biogas by solid organic waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110213469.XA CN102321673B (en) | 2011-07-28 | 2011-07-28 | Method for producing biogas by solid organic waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102321673A true CN102321673A (en) | 2012-01-18 |
| CN102321673B CN102321673B (en) | 2014-01-29 |
Family
ID=45449506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110213469.XA Active CN102321673B (en) | 2011-07-28 | 2011-07-28 | Method for producing biogas by solid organic waste |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102321673B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603383A (en) * | 2012-03-19 | 2012-07-25 | 崔勇 | Production equipment and preparation method of high-efficiency slow-release bio-organic fertilizer |
| CN103865791A (en) * | 2014-03-07 | 2014-06-18 | 河北科技大学 | Treating device and treating method for streptomycin dregs |
| CN103865790A (en) * | 2014-03-07 | 2014-06-18 | 河北科技大学 | Oxytetracycline mushroom residue harmless treatment device and technology |
| CN104651218A (en) * | 2015-01-27 | 2015-05-27 | 深圳市海吉星环保有限责任公司 | Coupling utilization system and method of anaerobic fermentation of fruit and vegetable wastes and afterheat of bio-gas generator |
| CN106830583A (en) * | 2017-04-24 | 2017-06-13 | 张红星 | A kind of livestock/poultry wastewater treatment system |
| CN106854663A (en) * | 2016-12-19 | 2017-06-16 | 苏州唐氏机械制造有限公司 | The method of municipal refuse dry fermentation |
| CN107810068A (en) * | 2015-04-29 | 2018-03-16 | 阿加托斯绿色电力利莫里亚有限责任公司 | For the technique for handling the solid waste containing organic component |
| CN109371063A (en) * | 2018-11-12 | 2019-02-22 | 河南省图天新能源科技有限公司 | One kind is using agricultural synthesis waste as raw material efficient anaerobic fermentation technique |
| CN112626129A (en) * | 2021-01-05 | 2021-04-09 | 深圳茂元环保科技有限公司 | Anaerobic fermentation acidification control method for organic garbage |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134684A (en) * | 2007-07-27 | 2008-03-05 | 东莞科创未来能源科技发展有限公司 | Method for producing hydrogen and methane by kitchen waste diphasic anaerobic fermentation |
| CN101381674A (en) * | 2008-06-05 | 2009-03-11 | 北京桑德环保集团有限公司 | Vertical non-stirred organic waste dry-type anaerobic digestion processing equipment and method |
| CN101862747A (en) * | 2009-04-15 | 2010-10-20 | 上海派升环保科技有限公司 | Two-phase wet-type anaerobic digestion treatment method of food waste |
-
2011
- 2011-07-28 CN CN201110213469.XA patent/CN102321673B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134684A (en) * | 2007-07-27 | 2008-03-05 | 东莞科创未来能源科技发展有限公司 | Method for producing hydrogen and methane by kitchen waste diphasic anaerobic fermentation |
| CN101381674A (en) * | 2008-06-05 | 2009-03-11 | 北京桑德环保集团有限公司 | Vertical non-stirred organic waste dry-type anaerobic digestion processing equipment and method |
| CN101862747A (en) * | 2009-04-15 | 2010-10-20 | 上海派升环保科技有限公司 | Two-phase wet-type anaerobic digestion treatment method of food waste |
Non-Patent Citations (3)
| Title |
|---|
| UENO等: "production of hydrogen and methane from organic solid wastes by phase-separation of anaerobic process", 《BIORESOURCE TECHNOLOGY》, vol. 98, 31 December 2007 (2007-12-31), pages 1861 - 1865, XP005876265, DOI: doi:10.1016/j.biortech.2006.06.017 * |
| 关正军 等: "固液分离对牛粪利用效果的影响", 《农业工程学报》, vol. 27, no. 4, 30 April 2011 (2011-04-30), pages 259 - 263 * |
| 刘广青 等: "批式与两相高温厌氧消化厨余和杂草废弃物对比研究", 《中国农业大学学报》, vol. 11, no. 6, 31 December 2006 (2006-12-31), pages 111 - 115 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603383B (en) * | 2012-03-19 | 2013-12-18 | 崔勇 | Production equipment and preparation method of slow-release bio-organic fertilizer |
| CN102603383A (en) * | 2012-03-19 | 2012-07-25 | 崔勇 | Production equipment and preparation method of high-efficiency slow-release bio-organic fertilizer |
| CN103865791A (en) * | 2014-03-07 | 2014-06-18 | 河北科技大学 | Treating device and treating method for streptomycin dregs |
| CN103865790A (en) * | 2014-03-07 | 2014-06-18 | 河北科技大学 | Oxytetracycline mushroom residue harmless treatment device and technology |
| CN103865790B (en) * | 2014-03-07 | 2016-02-10 | 河北科技大学 | The device of a kind of terramycin strain slag harmlessness process and technique |
| CN104651218A (en) * | 2015-01-27 | 2015-05-27 | 深圳市海吉星环保有限责任公司 | Coupling utilization system and method of anaerobic fermentation of fruit and vegetable wastes and afterheat of bio-gas generator |
| US10576516B2 (en) | 2015-04-29 | 2020-03-03 | Agatos Green Power Lemuria S.R.L. | Process for treating solid waste containing an organic fraction |
| CN107810068A (en) * | 2015-04-29 | 2018-03-16 | 阿加托斯绿色电力利莫里亚有限责任公司 | For the technique for handling the solid waste containing organic component |
| CN106854663A (en) * | 2016-12-19 | 2017-06-16 | 苏州唐氏机械制造有限公司 | The method of municipal refuse dry fermentation |
| CN106830583A (en) * | 2017-04-24 | 2017-06-13 | 张红星 | A kind of livestock/poultry wastewater treatment system |
| CN109371063A (en) * | 2018-11-12 | 2019-02-22 | 河南省图天新能源科技有限公司 | One kind is using agricultural synthesis waste as raw material efficient anaerobic fermentation technique |
| CN109371063B (en) * | 2018-11-12 | 2021-10-12 | 河南省图天新能源科技有限公司 | Efficient anaerobic fermentation process using agricultural comprehensive wastes as raw materials |
| CN112626129A (en) * | 2021-01-05 | 2021-04-09 | 深圳茂元环保科技有限公司 | Anaerobic fermentation acidification control method for organic garbage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102321673B (en) | 2014-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102321673B (en) | Method for producing biogas by solid organic waste | |
| Deng et al. | Application and development of biogas technology for the treatment of waste in China | |
| CN103381420B (en) | Device and method for sewage collaborative reutilization comprehensive treatment | |
| CN101337838B (en) | Combined anaerobic fermentation process for organic solid wastes | |
| CN101746941B (en) | Biological drying method for treating dewatered sludge of urban sewage plant | |
| CN102517200B (en) | Organic waste dry anaerobic high-temperature fermentation system and fermentation process | |
| CN103240264B (en) | Have the low emission solid organic castoff treatment system of biogas and Activated Carbon Production concurrently | |
| CN101792246B (en) | Method for generating biogas through intensified hydrolysis and anaerobic digestion of municipal domestic organic refuse | |
| CN102212561B (en) | Processing method for fermenting straws in dry-process and wet-process combined way | |
| CN103087901B (en) | Distributed biological fermentation energy supply system | |
| CN102500604A (en) | Household solid garbage recycling and renewable biological carbon circulating technology | |
| CN103708693B (en) | A kind of municipal sewage treatment produce digestion system and the method for mud | |
| CN103332840B (en) | A kind of sludge at low temperature modified anaerobic methane production set treatment device of heat and method | |
| CN105886330A (en) | Municipal domestic solid waste integrated treatment process system | |
| CN102336508A (en) | Method and system for quickly dehydrating and recycling municipal sewage sludge | |
| CN102030567A (en) | Processing method for comprehensive utilization of solid household refuse | |
| CN103451095A (en) | Method for preparing marsh gas through straw, excrement and kitchen waste | |
| CN104774751A (en) | Efficient continuous treatment system of livestock and poultry organic wastes, and treatment method thereof | |
| CN101215049B (en) | Ecotype coprocessing technique for country sewage and organic solid castoff | |
| CN105296337A (en) | Community organic matter in-place digestion degradation biogas preparation electrical power generating system, and applications thereof | |
| CN207581802U (en) | A kind of device of the mixed material fermentation and biogas production with hydro-thermal process | |
| CN103803771A (en) | Method for disposing urban sludge by using earthworms | |
| CN101832566A (en) | Anaerobic sludge digestion and dehydrated incineration method | |
| CN211734134U (en) | Livestock and poultry manure and domestic garbage comprehensive treatment system | |
| CN208684795U (en) | A kind of organic fertilizer joint production |
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 |