CN110218634A - A kind of biogas generating system recycling biogas slurry and circulation utilization method - Google Patents
A kind of biogas generating system recycling biogas slurry and circulation utilization method Download PDFInfo
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- CN110218634A CN110218634A CN201910513766.2A CN201910513766A CN110218634A CN 110218634 A CN110218634 A CN 110218634A CN 201910513766 A CN201910513766 A CN 201910513766A CN 110218634 A CN110218634 A CN 110218634A
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- Prior art keywords
- biogas
- methane
- biogas slurry
- generating pit
- pipe
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- 239000002002 slurry Substances 0.000 title claims abstract description 79
- 238000004064 recycling Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000000855 fermentation Methods 0.000 claims abstract description 46
- 230000004151 fermentation Effects 0.000 claims abstract description 46
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 34
- 241000196324 Embryophyta Species 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 17
- 238000003973 irrigation Methods 0.000 claims abstract description 16
- 230000002262 irrigation Effects 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 241001672212 Cenchrus purpureus Species 0.000 claims abstract description 12
- 238000010992 reflux Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 9
- 241001465754 Metazoa Species 0.000 claims description 6
- 210000003608 fece Anatomy 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 3
- 238000003306 harvesting Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 230000029087 digestion Effects 0.000 description 3
- 235000013311 vegetables Nutrition 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 241000282412 Homo Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 210000005095 gastrointestinal system Anatomy 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 239000012165 plant wax Substances 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000010496 root system development Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F3/00—Fertilisers from human or animal excrements, e.g. manure
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
-
- 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
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/36—Means for collection or storage of gas; Gas holders
-
- 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
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/18—External loop; Means for reintroduction of fermented biomass or liquid percolate
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
The invention discloses a kind of biogas generating system for recycling biogas slurry and circulation utilization methods, wherein biogas generating system includes the methane-generating pit for carrying out rich nitrogen fermenting raw materials, plantation field for carrying out the fermentation vat of carbon-rich materials fermentation and for planting plant corresponding to carbon-rich materials, the delivery outlet of the methane-generating pit includes biogas output pipe, biogas slurry return pipe and biogas slurry irrigation pipe, the end of the biogas slurry return pipe connects the methane-generating pit and realizes reflux, the biogas slurry irrigation pipe is connected to the plantation field, it plants resulting plant and launches to the fermentation vat in the plantation field, the present invention is directed to rich nitrogen raw material using conventional methane-generating pit, for carbon-rich materials using the fermentation vat of fermentation relative efficiency, it is possible thereby to which planting the conventional methane-generating pit such as napier grass in plantation Tanaka is difficult to the plant fermented, plantation field is irrigated using the biogas slurry of methane-generating pit, plantation Field gathers in plant and puts into fermentation vat, forms recycling in biogas generating system, reaches zero-emission.
Description
Technical field
The present invention relates to technical field of methane, especially a kind of biogas generating system for recycling biogas slurry and recycle
Method.
Background technique
The mode that recycles of bionethanation system is roughly divided into two kinds in terms of biogas slurry treatment at present, and one is biogas slurry rows up to standard
It puts, i.e., biogas slurry reaches national grade one discharge standard after sewage treatment, externally discharges, and another kind is that biogas slurry recycles, usually
For, it constitutes and recycles the bionethanation system of biogas slurry that can only effectively ferment rich nitrogen raw material, such as human and animal excreta, can not effectively ferment richness
Carbon raw material, such as plant rod diameter, therefore vegetables etc. can only be generally also cultivated using the plantation field that biogas slurry is irrigated, it can not will receive
Vegetables etc. after cutting put into biogas slurry system, and the endless form of this bionethanation system is simultaneously not perfect.
Summary of the invention
To solve the above problems, the purpose of the present invention is to provide a kind of biogas generating system for recycling biogas slurry and following
Ring utilizes method, and can ferment rich nitrogen raw material and carbon-rich materials respectively, constitutes the higher biogas generating system of cyclic utilization rate.
Technical solution used by the present invention solves the problems, such as it is:
A kind of biogas generating system recycling biogas slurry, including for carrying out rich nitrogen fermenting raw materials methane-generating pit, be used for
The fermentation vat for carrying out carbon-rich materials fermentation and plantation field for planting plant corresponding to carbon-rich materials, the methane-generating pit it is defeated
Outlet includes biogas output pipe, biogas slurry return pipe and biogas slurry irrigation pipe, the gas equipment outside the biogas output pipe connection, institute
The end for stating biogas slurry return pipe connects the methane-generating pit and realizes reflux, and the biogas slurry irrigation pipe is connected to the plantation field, described
It plants field and plants resulting plant dispensing to the fermentation vat, the fermentation vat includes methane outlet, the methane outlet and institute
State biogas output pipe connection.
Further, the plant planted on the plantation field is napier grass.
Further, gas total valve is provided in the biogas output pipe.
Further, the methane-generating pit further includes one for storing the water pressure chamber of biogas slurry, the bottom connection of the water pressure chamber
The bottom of the methane-generating pit is provided with U-tube and the penstock against the U-tube, the hydraulic pressure in the middle part of the water pressure chamber
The bottom end of pipe connects the bottom of the water pressure chamber, and the top of the penstock is docked with wherein one end of the U-tube, the U
The other end of shape pipe protrudes into the methane-generating pit.
Further, the top of the penstock is provided with suction pump, and the suction pump connects the biogas slurry irrigation pipe.
Further, the bottom of the methane-generating pit is provided with scum pipe and takes out slag device, and the pumping slag device is arranged described
In scum pipe, the delivery outlet of the scum pipe connects the biogas slurry irrigation pipe.
Further, the biogas slurry irrigation pipe is provided with mixing for mixing biogas slurry and biogas residue between the plantation field
Pond.
Further, further include two-way casing for being connected to the methane-generating pit and fermentation vat, the two-way casing includes axis
The outer tube and inner tube that line is overlapped, the radius of the outer tube are greater than the radius of inner tube, and the outer tube and inner tube are respectively arranged at least
One for controlling the on-off valve of on-off.
It is a kind of using a kind of any of the above-described circulation utilization method for the biogas generating system for recycling biogas slurry, including it is following
Step:
The rich nitrogen raw material such as human and animal excreta is periodically put into methane-generating pit, and it is former that the rich carbon such as napier grass is periodically put into fermentation vat
Material；
The biogas generated in methane-generating pit and fermentation vat supplies gas equipment by biogas output pipe；
The biogas slurry obtained after gas-liquid separation in methane-generating pit returns to methane-generating pit by biogas slurry return pipe；
The biogas slurry positioned at methane-generating pit surface layer more than methane-generating pit storage threshold value is extracted, the natural pond of methane-generating pit bottom deposit is extracted
Slag after mixing the biogas slurry of extraction and biogas residue, is invested in plantation field, for the plant fertilising for planting Tanaka；
After planting the harvesting of Tanaka growing plants, launches to fermentation vat and generate biogas.
The one or more technical solutions provided in the embodiment of the present invention at least have the following beneficial effects: for rich nitrogen
Raw material is using conventional methane-generating pit, for carbon-rich materials using the fermentation vat of fermentation relative efficiency, it is possible thereby in plantation Tanaka
The conventional methane-generating pit such as plantation napier grass is difficult to the plant fermented, and irrigates plantation field using the biogas slurry of methane-generating pit, plant is gathered in plantation field
Fermentation vat is put into, recycling in biogas generating system is formed, reaches zero-emission.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the system structure diagram of the embodiment of the present invention；
Fig. 2 is the method flow schematic diagram of the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.It should be noted that each feature in the embodiment of the present invention can be combined with each other if do not conflicted,
It is within the scope of the present invention.
The rich nitrogen raw material being mentioned in the present invention typically refers to people, animal and this kind of raw material of poultry manure, have passed through people and moves
The abundant digestion of object gastrointestinal system, general particle is tiny to contain a large amount of low molecular compounds: during humans and animals are not assimilated
Between product, water content is higher.Therefore, when carrying out biogas fermentation, they need not be pre-processed, and be easy anaerobic digestion, produce gas very
Fastly, the fermentation phase is shorter.And carbon-rich materials typically refer to the residue of the crops such as stalk.This kind of raw material is rich in cellulose, half fiber
Dimension element, pectin and lignin difficult to degrade and plant wax, dry matter content are higher than the excrement raw material of rich nitrogen, and quality is dredged
Pine, specific gravity is small, into methane-generating pit after be easy floating to form fermentation dead --- floating shell, ferment it is previous as need it is preprocessed.Rich carbon
Raw material anaerobic digestion is slower than rich nitrogen raw material, and it is longer to produce the gas period, it is therefore desirable to which specific microbial fermentation group is all to improve fermentation
Phase, and be difficult to synchronous with the fermentation of rich nitrogen raw material.
Referring to Fig.1, one embodiment of first aspect present invention provides a kind of biogas system for recycling biogas slurry
System, including the methane-generating pit 100 for carrying out rich nitrogen fermenting raw materials, the fermentation vat 200 for carrying out carbon-rich materials fermentation and is used for
The plantation field 300 of plant corresponding to carbon-rich materials is planted, the delivery outlet of methane-generating pit 100 includes biogas output pipe 110, biogas slurry time
Flow tube 120 and biogas slurry irrigation pipe 130, gas total valve 400 is provided in biogas output pipe 110, and biogas output pipe 110 connects outer
The end connection methane-generating pit 100 of the gas equipment in portion, biogas slurry return pipe 120 realizes reflux, and biogas slurry irrigation pipe 130 is connected to plantation
Field 300,300 kinds of plantation field are planted resulting plant and are launched to fermentation vat 200, and fermentation vat 200 includes methane outlet 210, and biogas goes out
Mouth 210 is connect with biogas output pipe 110.
In the present embodiment, planting the plant planted on field 300 is napier grass.Napier grass belongs to high energy plant, and grows fastly,
It can be realized quickly supply fermentation vat 200 and the methane output be higher compared to general stalk, improve entire biogas generating system
Efficiency.Due to the above-mentioned characteristic of napier grass, the user small for biogas dosage, the cultivated area of napier grass is more compared to general plant
It is small, it is bonded the actual needs of small-sized peasant household.
In the present embodiment, methane-generating pit 100 further includes one for storing the water pressure chamber 140 of biogas slurry, the bottom of water pressure chamber 140
Portion is connected to the bottom of methane-generating pit 100, and the middle part of water pressure chamber 140 is provided with U-tube 141 and the penstock 142 against U-tube 141,
The bottom of the bottom end connection water pressure chamber 140 of penstock 142, the top of penstock 142 are docked with wherein one end of U-tube 141, U
The other end of shape pipe 141 protrudes into methane-generating pit 100.Use water pressure chamber 140 can with the air pressure in auto-control methane-generating pit 100, by
It is not constant, liquid level rising in penstock 142 when air pressure is higher in the air pressure in methane-generating pit 100 during the fermentation,
The biogas slurry for being higher by 142 top of penstock, which flows in U-tube 141, to be stored, when air pressure is lower, the both ends air pressure of U-tube 141
It is inconsistent, it is lower towards that section of air pressure in methane-generating pit 100, therefore the biogas slurry in U-tube 141 is supplemented in methane-generating pit 100,
To maintain the air pressure in methane-generating pit 100 automatically.
In addition, the top of penstock 142 is provided with suction pump 500, suction pump 500 connects biogas slurry irrigation pipe 130.Methane-generating pit
100 bottom is provided with scum pipe 600 and takes out slag device 700, takes out slag device 700 and is arranged in scum pipe 600, scum pipe 600
Delivery outlet connect biogas slurry irrigation pipe 130.Biogas slurry irrigation pipe 130 is provided between plantation field 300 for mixing biogas slurry and natural pond
The mixing pond 800 of slag.It usually, is to be not suitable for irrigated crop when biogas slurry and biogas residue have just gone out pond, biogas slurry and natural pond in fact
The reproducibility of slag is stronger, can influence germination and root system development with the oxygen in crop contention soil, meanwhile, singly apply biogas slurry
Nutrient concentration it is lower, the nutrient concentration for singly applying biogas residue is higher, therefore mixing pond 800 is arranged in the present embodiment and mixes biogas slurry simultaneously
And biogas residue, to be mixed to get preferable fertilizer.
It preferably, further include two-way casing 900 for being connected to methane-generating pit 100 and fermentation vat 200, two-way casing 900 wraps
The outer tube 910 and inner tube 920 of axis coincidence are included, the radius of outer tube 910 is greater than the radius of inner tube 920, outer tube 910 and inner tube 920
At least one is respectively arranged with for controlling the on-off valve 930 of on-off.Although the microorganism in methane-generating pit 100 and fermentation vat 200
Type have some differences, but occur in methane-generating pit 100 or fermentation vat 200 liquid level it is seriously uneven when, can open logical
Disconnected valve 930 controls two ponds to exchange biogas slurry, fixed between outer tube 910 and inner tube 920 by some fixing pieces two pipes it
Between position, those skilled in the art by actual conditions be arranged, such as weld steel bar connect, be not described in detail one by one herein；
In the present embodiment, outer tube 910 is the pipeline that methane-generating pit 100 arrives 200 direction of fermentation vat, and inner tube 920 is that fermentation vat 200 arrives biogas
The pipeline in 100 direction of pond.
Referring to Fig. 2, one embodiment of second aspect of the present invention provides a kind of using the above-mentioned natural pond for recycling biogas slurry
The circulation utilization method of gas generating system, comprising the following steps:
The rich nitrogen raw material such as human and animal excreta is periodically put into methane-generating pit 100, and the richnesses such as napier grass are periodically put into fermentation vat 200
Carbon raw material；
The biogas generated in methane-generating pit 100 and fermentation vat 200 supplies gas equipment by biogas output pipe 110；
The biogas slurry obtained after gas-liquid separation in methane-generating pit 100 returns to methane-generating pit 100 by biogas slurry return pipe 120；
The biogas slurry positioned at 100 surface layer of methane-generating pit for storing threshold value more than methane-generating pit 100 is extracted, 100 bottom of methane-generating pit is extracted
The biogas residue of deposition after mixing the biogas slurry of extraction and biogas residue, is invested in plantation field 300, for the plant fertilising in plantation field 300；
It plants in field 300 after growing plants harvesting, dispensing to fermentation vat 200 generates biogas.
The embodiment of the present invention separates the recycle circuit of carbon-rich materials with the recycle circuit of rich nitrogen raw material, and rich using processing
Biogas slurry and biogas residue in the methane-generating pit 100 of nitrogen raw material are launched as fertilizer to plantation field 300, since there are special disposals in system
The fermentation vat 200 of carbon-rich materials, therefore plant and the contour energy plant of such as napier grass may be selected on field 300, and it is not limited to edible class
Vegetables, the embodiment of the present invention do not need externally to discharge biogas slurry and biogas residue in cyclic process, have reached the standard of zero-emission.
The above, only presently preferred embodiments of the present invention, the invention is not limited to above embodiment, as long as
It reaches technical effect of the invention with identical means, all should belong to protection scope of the present invention.
Claims (9)
1. a kind of biogas generating system for recycling biogas slurry, it is characterised in that: including the natural pond for carrying out rich nitrogen fermenting raw materials
Gas pond, the fermentation vat for carrying out carbon-rich materials fermentation and the plantation field for planting plant corresponding to carbon-rich materials, it is described
The delivery outlet of methane-generating pit includes biogas output pipe, biogas slurry return pipe and biogas slurry irrigation pipe, outside the biogas output pipe connection
Gas equipment, the end of the biogas slurry return pipe connect the methane-generating pit and realize reflux, and the biogas slurry irrigation pipe is connected to described
Field is planted, the plantation field is planted resulting plant and launched to the fermentation vat, and the fermentation vat includes methane outlet, the natural pond
Gas outlet is connect with the biogas output pipe.
2. a kind of biogas generating system for recycling biogas slurry according to claim 1, it is characterised in that: the plantation field
The plant of upper plantation is napier grass.
3. a kind of biogas generating system for recycling biogas slurry according to claim 1 and circulation utilization method, feature
It is: is provided with gas total valve in the biogas output pipe.
4. a kind of biogas generating system for recycling biogas slurry according to claim 1, it is characterised in that: the methane-generating pit
It further include one for storing the water pressure chamber of biogas slurry, the bottom of the water pressure chamber is connected to the bottom of the methane-generating pit, the hydraulic pressure
Between middle part be provided with U-tube and the penstock against the U-tube, the bottom end of the penstock connects the bottom of the water pressure chamber
Portion, the top of the penstock are docked with wherein one end of the U-tube, and the other end of the U-tube protrudes into the methane-generating pit
It is interior.
5. a kind of biogas generating system for recycling biogas slurry according to claim 4, it is characterised in that: the penstock
Top be provided with suction pump, the suction pump connects the biogas slurry irrigation pipe.
6. a kind of biogas generating system for recycling biogas slurry according to claim 5, it is characterised in that: the methane-generating pit
Bottom be provided with scum pipe and take out slag device, pumpings slag device setting is in the scum pipe, the output of the scum pipe
Mouth connects the biogas slurry irrigation pipe.
7. a kind of biogas generating system for recycling biogas slurry according to claim 6, it is characterised in that: the biogas slurry fills
Pipe is irrigate to the mixing pond being provided between the plantation field for mixing biogas slurry and biogas residue.
8. a kind of biogas generating system for recycling biogas slurry according to claim 1, it is characterised in that: further include being used for
It is connected to the two-way casing of the methane-generating pit and fermentation vat, the two-way casing includes the outer tube and inner tube that axis is overlapped, described outer
The radius of pipe is greater than the radius of inner tube, and the outer tube and inner tube are respectively arranged at least one for controlling the on-off valve of on-off.
9. a kind of side of recycling using a kind of any biogas generating system for recycling biogas slurry of claim 1-8
Method, it is characterised in that the following steps are included:
The rich nitrogen raw material such as human and animal excreta is periodically put into methane-generating pit, and the carbon-rich materials such as napier grass are periodically put into fermentation vat；
The biogas generated in methane-generating pit and fermentation vat supplies gas equipment by biogas output pipe；
The biogas slurry obtained after gas-liquid separation in methane-generating pit returns to methane-generating pit by biogas slurry return pipe；
The biogas slurry positioned at methane-generating pit surface layer more than methane-generating pit storage threshold value is extracted, the biogas residue of methane-generating pit bottom deposit is extracted, it will
After biogas slurry and the biogas residue mixing of extraction, it is invested in plantation field, for the plant fertilising for planting Tanaka；
After planting the harvesting of Tanaka growing plants, launches to fermentation vat and generate biogas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910513766.2A CN110218634A (en) | 2019-06-14 | 2019-06-14 | A kind of biogas generating system recycling biogas slurry and circulation utilization method |
Applications Claiming Priority (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112715306A (en) * | 2021-01-06 | 2021-04-30 | 马晓燕 | Ecological cycle farming systems that high altitude area potato and pig were educated altogether |
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