CN106007255A - Advanced treatment system and method for biogas slurry in domestic household biogas tank - Google Patents

Advanced treatment system and method for biogas slurry in domestic household biogas tank Download PDF

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Publication number
CN106007255A
CN106007255A CN201610608253.6A CN201610608253A CN106007255A CN 106007255 A CN106007255 A CN 106007255A CN 201610608253 A CN201610608253 A CN 201610608253A CN 106007255 A CN106007255 A CN 106007255A
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China
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biogas slurry
reaction tank
tank
mbr reaction
biogas
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CN201610608253.6A
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Chinese (zh)
Inventor
刘波
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Beijing Tianji Video Technology Development Co Ltd
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Beijing Tianji Video Technology Development Co Ltd
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Priority to CN201610608253.6A priority Critical patent/CN106007255A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/128—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using batch processes
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
    • 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 provides an advanced treatment system and method for biogas slurry in a domestic household biogas tank. The system comprises a secondary fermentation device, an MBR (membrane bioreactor) reaction tank, a concentrator and a sludge treatment device, wherein a feed port of the MBR reaction tank is connected with the secondary fermentation device, and the MBR reaction tank is used for carrying out membrane separation and biological treatment on biogas slurry subjected to secondary fermentation; a feed port of the concentrator is connected with a percolate outlet of the MBR reaction tank, and the concentrator is used for making the MBR reaction tank percolate into a main raw material for Chinese standard drip irrigation fertilizers or a foliage fertilizer; and a feed port of the sludge treatment device is connected with a trapped fluid outlet of the MBR reaction tank, and the sludge treatment device is used for making the MBR reaction tank trapped fluid into a solid organic fertilizer. Waste biogas slurry and biogas residues of the household biogas tank are drawn out for secondary fermentation, and treated by the MBR reaction tank; the percolate is concentrated by the concentrator to obtain the main raw material for Chinese standard drip irrigation fertilizers or the foliage fertilizer; and the trapped fluid is treated by the sludge treatment device to prepare the solid organic fertilizer, thereby implementing zero discharge of the biogas slurry and biogas residues, and completely converting the biogas slurry and biogas residue into the products.

Description

A kind of system and method that biogas slurry in domestic methane tank is carried out advanced treating
Technical field
The present invention relates to a kind of agricultural wastes resource utilization system and method, particularly to one in domestic methane tank Biogas slurry carry out the system and method for advanced treating.
Background technology
Domestic methane tank is by can get biogas, natural pond to the organic waste such as anaerobic fermentation such as feces of livestock and poultry, agricultural crop straw Slag and biogas slurry, wherein biogas is as the regenerative resource of cleaning, can realize carbon dioxide (CO2) during utilization of energy Near-zero release, biogas residue and biogas slurry are then the fertilizers of high-quality, can realize chemical fertilizer and pesticide in agricultural production application Subtract and execute potentiation.But the production of present stage Chinese countryside, life style there occurs large change, pig-natural pond-dish, pig-natural pond-fruit Pattern is gradually replaced by the biogas service station (take out and feed intake) of specialty, i.e. ferments to a certain extent when domestic methane tank, raw After product biogas speed is not enough to supply the demands such as user cooks more slowly, domestic methane tank needs biogas service station to carry out taking out feeding intake, Residue biogas slurry and biogas residue are taken away in proportion and again inserts new raw material.But, because of with fertile season, dissolve soil and biogas residue, The most high factor of biogas slurry added value limits, and substantial amounts of biogas residue, biogas slurry that biogas service station obtains can not get processing completely, pole Easily cause the directly discharge of biogas slurry and cause secondary pollution.And the qualified discharge tupe of biogas slurry there is also floor space big, Investment is big and the difficult problem such as running cost height.Therefore, the low cost minimizing Treatment and recovery of biogas slurry utilizes and is highly desirable to. Accordingly, it would be desirable to a kind of process system of exploitation, during minimizing processes biogas slurry, it is achieved biogas slurry, biogas residue commercialization, carry High biogas slurry added value, it is achieved biogas service station from operation ability.
Summary of the invention
The present invention solves that above-mentioned technical problem provides a kind of system that biogas slurry in domestic methane tank carries out advanced treating And method.
The technical solution used in the present invention is:
A kind of system that biogas slurry in domestic methane tank carries out advanced treating, including secondary fermentation device, MBR, (film is raw Thing reactor) reaction tank, enrichment facility and sludge treatment equipment；Described MBR reaction tank charging aperture and described ferment in second time Device is connected, for the biogas slurry after ferment in second time is carried out membrance separation and biological treatment；Described enrichment facility charging aperture and institute The permeate outlet stating MBR reaction tank is connected, for MBR reaction tank permeate is made the most former of GB drip irrigation fertilizer Material or foliage fertilizer；Described sludge treatment equipment charging aperture is connected with the outlet of described MBR reaction tank trapped fluid, for by MBR Reaction tank trapped fluid is prepared as SOLID ORGANIC fertilizer.Biogas slurry and biogas residue discarded after being used by domestic methane tank is extracted out two Ferment in second time in secondary installation for fermenting, then through MBR reaction tank, the concentrated device of MBR permeate is concentrated to give GB drip irrigation Fertile primary raw material or foliage fertilizer, MBR trapped fluid is prepared as SOLID ORGANIC fertilizer through sludge treatment equipment, it is achieved biogas slurry, Biogas residue zero-emission, is fully converted to product.
Preferably, described sludge treatment equipment includes sludge concentration tank, plate type pressure filter and centrifuge.
Preferably, between described sludge concentration tank and described plate type pressure filter, it is provided with screw pump, after concentrating Mud be delivered to described plate type pressure filter.
Preferably, described secondary fermentation device includes two methane-generating pits connected；It is provided with between two described methane-generating pits Internal circulation pump makes biogas slurry circulate between two described methane-generating pits.
Preferably, it is provided with aerator bottom described MBR reaction tank.
Preferably, described enrichment facility includes nanofiltration device and multi-effect evaporator.
Preferably, it is provided with collection regulating reservoir before described secondary fermentation device；Described secondary fermentation device is with described Storage regulating reservoir it is provided with between MBR reaction tank；It is provided with liquid storage tank between described MBR reaction tank and described enrichment facility. Collect regulating reservoir, store regulating reservoir and liquid storage tank the material in system is played regulatory role, meet ferment in second time, MBR anti- Should, the continuous Production requirement of nanofiltration device, multi-effect evaporator.
Preferably, in described collection regulating reservoir and described storage regulating reservoir, it is equipped with agitator, regulates raw materials for production Uniformity.
The present invention also provides for a kind of method that biogas slurry in domestic methane tank is carried out advanced treating, comprises the following steps:
Ferment in second time: biogas slurry be placed in secondary fermentation device and carry out ferment in second time, is allowed to become thoroughly decomposed completely, reduces in biogas slurry COD and concentration of suspension, improve small organic molecule and inorganic matter quantity；
MBR reacts: the biogas slurry after ferment in second time is put into MBR reaction tank and carries out membrance separation and biological treatment；
Concentrate: the permeate of MBR reaction tank is put into enrichment facility and concentrates, obtain the most former of GB drip irrigation fertilizer Material or foliage fertilizer；
Treatment of Sludge: the trapped fluid of MBR reaction tank is carried out Treatment of Sludge in sludge treatment equipment, obtains SOLID ORGANIC Fertilizer.
A kind of method that biogas slurry in domestic methane tank is carried out advanced treating, comprises the following steps:
Collect regulation: the biogas slurry in each domestic methane tank is put into collection regulating reservoir, is uniformly mixed；
Ferment in second time: the biogas slurry after collection having been regulated is placed in secondary fermentation device and carries out ferment in second time, is allowed to complete Become thoroughly decomposed, reduce COD and concentration of suspension in biogas slurry, improve small organic molecule and inorganic matter quantity；
Store regulation: the biogas slurry after ferment in second time is put into storage regulating reservoir, is uniformly mixed；
MBR reacts: the biogas slurry after ferment in second time is put into MBR reaction tank and carries out membrance separation and biological treatment；
Concentrate: the permeate of MBR reaction tank is put into enrichment facility and concentrates, obtain the most former of GB drip irrigation fertilizer Material or foliage fertilizer；
Treatment of Sludge: the trapped fluid of MBR reaction tank is carried out Treatment of Sludge in sludge treatment equipment, obtains SOLID ORGANIC Fertilizer.
Preferably, described concentration step specifically includes and the permeate of MBR reaction tank is put into nanofiltration device carries out Nanofiltration, obtains as the nanofiltration trapped fluid of GB drip irrigation fertilizer primary raw material, or nanofiltration trapped fluid to be put into multiple-effect steaming Carry out multiple-effect evaporation in sending out device, obtain foliage fertilizer.
Preferably, described Treatment of Sludge step specifically includes and the trapped fluid of MBR reaction tank is put into sludge concentration tank Inside concentrate, then gained mud after concentration is delivered to plate type pressure filter by screw pump carries out filter pressing, the most at last filter cake Put into centrifuge and be centrifuged dehydration, obtain SOLID ORGANIC fertilizer (dry cake) and the primary raw material of enterprise's mark punching fertilising (abjection biogas slurry).
The present invention has the advantage that with good effect:
Domestic methane tank is taken out, by biogas service station, the service of feeding intake by the present invention, the biogas slurry of collection is again fermented, Realizing becoming thoroughly decomposed completely of feed liquid, the feed liquid become thoroughly decomposed completely, again through MBR, concentrates and sludge dewatering, finally, by biogas residue, Biogas slurry is processed into enterprise's mark punching fertilising, enterprise's mark drip irrigation fertilizer, GB drip irrigation fertilizer, foliage fertilizer and the primary raw material of solid organic fertilizer. Realize the zero-emission of biogas residue, biogas slurry, be completely converted into product.Meanwhile, the heavy metal in these raw materials is effectively controlled.
The COD of biogas slurry and concentration of suspension can be made after ferment in second time to be greatly reduced, improve biogas slurry small molecular The filtration of Organic substance and inorganic matter, beneficially biogas slurry and concentration, and improve in filtrate and concentrated solution be conducive to crop inhale The nutrient received, and then be conducive to the Commercial cultivation of agricultural.
By ferment in second time and MBR course of reaction, reduce the H in biogas greatly2S and part CO2, simplify Biogas post processor also improves the combustion value of biogas, the beneficially later-stage utilization of biogas.The present invention can reduce equipment Investment cost, reduction occupation area of equipment and increase utilization rate of equipment and installations.During concentrating biogas slurry, temperature requirement is low, because of And there is the effect of energy-conserving and environment-protective.
In a word, the present invention is reasonable in design, easy to use, is widely used, effect highly significant；It is that one can drop significantly The ammonia nitrogen concentration of low Aeration tank water inlet, improves Aeration tank nitrifying bacteria community quantity, effectively reduces the Digestive system degree of depth of energy resource consumption Processing system.
Except the technical characteristic that present invention solves the technical problem that, constitute technical scheme described above and by these skills Outside the advantage that the technical characteristic of art scheme is brought, other technologies problem that the present invention can solve, technical scheme are wrapped The advantage that the other technologies feature contained and these technical characteristics are brought, will hereinafter be described in further detail.
Accompanying drawing explanation
Fig. 1 is that the present invention carries out the system schematic of advanced treating to the biogas slurry in domestic methane tank.
In figure: 1, collect regulating reservoir；2, ferment in second time pond；3, regulating reservoir is stored；4, MBR reaction tank；5, storage Liquid pool；6, nanofiltration device；7, clear water reserviors；8, multi-effect evaporator；9, sludge concentration tank；10, aerator；11、 Screw pump；12, plate type pressure filter；13, centrifuge；
1-1 the first agitator；1-2 the first sewage pump；1-3 dog-house；1-4 the first non-return valve；
2-1 internal circulation pump；2-2 the second non-return valve；
3-1 the second agitator；3-2 the second sewage pump；3-3 the 3rd non-return valve；
4-1 aerator；4-2 curtain-type hollow-fibre membrane；
5-1 the 3rd sewage pump；5-2 the 4th non-return valve；
6-1 NF membrane；
8-1 evaporator.
Detailed description of the invention
For the summary of the invention of the present invention, feature and effect can be further appreciated that, hereby enumerate following example elaborate as Under:
As it is shown in figure 1, the present embodiment provides a kind of system and method that biogas slurry in domestic methane tank carries out advanced treating, This system includes collecting regulating reservoir 1, ferment in second time pond 2, storage regulating reservoir 3, MBR reaction tank 4, liquid storage tank 5, receiving Filter device 6, clear water reserviors 7, multi-effect evaporator 8, sludge concentration tank 9, aerator 10, screw pump 11, plate type pressure filter 12,13, two agitators, 3 sewage pumps etc. of centrifuge are constituted.The concrete structure of this system and to domestic methane tank In biogas slurry to carry out the method for advanced treating as follows: the biogas slurry in described domestic methane tank is introduced into collection regulating reservoir 1, completes In the methane-generating pit of each family, the mixing regulation of biogas slurry, sets the first agitator 1-1 in collecting regulating reservoir 1, collects regulating reservoir 1 top and sets Dog-house 1-3, the biogas slurry after regulation utilizes the first sewage pump 1-2 to carry again to ferment into ferment in second time pond 2, and first is dirty The water side of water pump 1-2 is provided with the first non-return valve 1-4, and ferment in second time pond 2 is that two methane-generating pits are in series, and follows in setting Ring pump 2-1, internal circulation pump water side is provided with the second non-return valve 2-2, and the biogas slurry after ferment in second time is from flowing into storage regulating reservoir 3, it is provided with the second agitator 3-1 in storing regulating reservoir 3, biogas slurry utilizes the second sewage pump 3-2 to carry into MBR from storing regulating reservoir Reaction tank 4, the second sewage pump 3-2 water side is provided with the 3rd non-return valve 3-3, goes out through curtain-type hollow-fibre membrane 4-2 microfiltration Liquid import liquid storage tank 5, be provided with aerator 4-1, aerator 4-1 bottom MBR reaction tank 4 and be connected with aerator 10； Biogas slurry in liquid storage tank 5 can be as the primary raw material of enterprise's mark drip irrigation fertilizer, and the biogas slurry in liquid storage tank 5 is through the 3rd sewage pump 5-1 Carrying into nanofiltration device 6, the 3rd sewage pump 5-1 water side sets the 4th non-return valve 5-2；Concentrated solution after nanofiltration device 6 concentration Can as the primary raw material of GB drip irrigation fertilizer, nanofiltration device 6 concentrate after output water from flow into clear water reserviors 7 can be used for fire-fighting, Greening, view, nanofiltration device 6 is mainly made up of NF membrane 6-1, and nanofiltration concentrated solution enters one through multi-effect evaporator 8 again After step concentrates, concentrated solution can be directly as foliage fertilizer, and multi-effect evaporator 8 is mainly made up of evaporator 8-1.Anti-by MBR The higher suspension biogas slurry answering the curtain-type hollow-fibre membrane 4-2 in pond 4 to retain enters sludge concentration tank 9, the mud warp after concentration Screw pump 11 extrudes and sequentially enters plate type pressure filter 12, centrifuge 13 again, and the biogas slurry of abjection can be as enterprise's mark punching fertilising Primary raw material, mud makes SOLID ORGANIC fertilizer.
Described methane-generating pit inwall and biogas slurry contact portion do waterproof, anticorrosion, and lateral wall is incubated；All devices connects with biogas slurry Contact portion is divided and is anticorrosion material and makes, such as 304,316 stainless steels or other anticorrosion material.
Curtain-type hollow-fibre membrane 4-2 aperture in described MBR reaction tank 4 is 0.1-0.2 μm；Receive in nanofiltration device 6 Filter membrane 6-1 aperture precision is 200-300Dal；Plate type pressure filter 12 filter cloth 100-200 mesh；Centrifuge 13 filter cloth 400-600 Mesh.
Material in system is played regulatory role by described collection regulating reservoir 1, storage regulating reservoir 3 and liquid storage tank 5, meets secondary Fermentation vat 2, MBR reaction tank 4, nanofiltration device 6, the continuous Production requirement of multi-effect evaporator 8, also have adjusted life simultaneously Produce the uniformity of raw material.
System design and operation principle: such as, it is 10m that North China's domestic methane tank takes out the quantity that feeds intake every year3, Mei Gezhao 1000, methane-generating pit of gas service station service, collects 10000m every year3Biogas residue, biogas slurry mixture.Design biogas slurry advanced treating System daily handling ability 30m3, the design of the most each functional areas is as follows: collect regulating reservoir 100m3, ferment in second time pond 1000m3、 Store regulating reservoir 3000m3, MBR reaction tank 2m3/ h, liquid storage tank 100m3, nanofiltration device 5m3/ h, clear water reserviors 600m3、 Multi-effect evaporator 3m3/ h, sludge concentration tank 60m3.Biogas residue, biogas slurry in domestic methane tank are taken out through biogas service station and are fed intake After car sucking-off, first enter from dog-house and collect regulating reservoir, after the mixing regulation of agitated device, utilize sewage pump wave band formula to carry into two Secondary fermentation vat, biogas residue, biogas slurry ferment 30 days again in ferment in second time pond, and circulating pump remains duty, again sends out Biogas slurry after ferment, from flowing into storage regulating reservoir, stores agitator regular working in regulating reservoir, it is ensured that the uniformity of raw material, storage Depositing regulating reservoir and can store 3-4 month biogas slurry raw material, it is ensured that system is properly functioning, sewage pump will store in regulating reservoir again Biogas slurry carries into MBR reaction tank, is provided with aerator and is connected with aerator bottom MBR reaction tank, and biogas residue, biogas slurry are passed through again Aerobic biochemical reacts, and the liquid leached through the curtain-type hollow-fibre membrane of 0.2 μm imports liquid storage tank, and this liquid can be as adding The primary raw material of work enterprise mark drip irrigation fertilizer, this liquid is again after the nanofiltration membrane in nanofiltration device, and the liquid being concentrated can As the primary raw material of GB drip irrigation fertilizer, nanofiltration device output water can be used for fire-fighting, greening, view from flowing into clear water reserviors, The concentrated solution that nanofiltration device produces is again after multi-effect evaporator concentrates further, and this contracting liquid can be directly as foliage fertilizer.Quilt Higher suspension biogas residue, biogas slurry that curtain-type hollow-fibre membrane retains enter sludge concentration tank, and the mud after concentration sequentially enters again Plate type pressure filter and centrifuge, the biogas slurry of abjection can be as the primary raw material of enterprise's mark punching fertilising, and mud makes solid organic fertilizer Material.
Above-described embodiment is a preferred embodiment of the present invention, it will be appreciated by those skilled in the art that and need not serialization When producing and raw material uniformity and product quality required relatively low, the system of above example is removed collection regulating reservoir 1, Store regulating reservoir 3 and liquid storage tank 5, method is also removed corresponding steps, it is also possible to realize to a certain extent household biogas In pond, biogas slurry carries out advanced treating and is allowed to be converted into product, therefore simply can convert as another embodiment of the present invention The more above-mentioned preferred embodiment of rate is low, it is difficult to produce continuously, and the more above-mentioned preferred embodiment of efficiency is low.
Above-mentioned with reference to embodiment, domestic methane tank biogas slurry is carried out the detailed description that advanced treatment system is carried out, be illustrative Rather than determinate, therefore changing and modifications under without departing from present general inventive concept, the protection model of the present invention should be belonged to Within enclosing.

Claims (12)

1. the system that the biogas slurry in domestic methane tank is carried out advanced treating, it is characterised in that: include that ferment in second time fills Put, MBR reaction tank, enrichment facility and sludge treatment equipment；Described MBR reaction tank charging aperture and described ferment in second time Device is connected, for the biogas slurry after ferment in second time is carried out membrance separation and biological treatment；Described enrichment facility charging aperture and institute The permeate outlet stating MBR reaction tank is connected, for MBR reaction tank permeate is made the most former of GB drip irrigation fertilizer Material or foliage fertilizer；Described sludge treatment equipment charging aperture is connected with the outlet of described MBR reaction tank trapped fluid, for by MBR Reaction tank trapped fluid is prepared as SOLID ORGANIC fertilizer.
The system that biogas slurry in domestic methane tank is carried out advanced treating the most according to claim 1, it is characterised in that: Described sludge treatment equipment includes sludge concentration tank, plate type pressure filter and centrifuge.
The system that biogas slurry in domestic methane tank is carried out advanced treating the most according to claim 2, it is characterised in that: Being provided with screw pump between described sludge concentration tank and described plate type pressure filter, the mud after concentrating is delivered to described plate Formula pressure filter.
The system that biogas slurry in domestic methane tank is carried out advanced treating the most according to claim 1, it is characterised in that: Described secondary fermentation device includes two methane-generating pits connected；Being provided with internal circulation pump between two described methane-generating pits makes biogas slurry exist Circulate between two described methane-generating pits.
The system that biogas slurry in domestic methane tank is carried out advanced treating the most according to claim 1, it is characterised in that: It is provided with aerator bottom described MBR reaction tank.
The system that biogas slurry in domestic methane tank is carried out advanced treating the most according to claim 1, it is characterised in that: Described enrichment facility includes nanofiltration device and multi-effect evaporator.
7. according to the system that the biogas slurry in domestic methane tank is carried out advanced treating described in any one of claim 1-6, its It is characterised by: before described secondary fermentation device, be provided with collection regulating reservoir；Described secondary fermentation device and described MBR reaction tank Between be provided with storage regulating reservoir；It is provided with liquid storage tank between described MBR reaction tank and described enrichment facility.
The system that biogas slurry in domestic methane tank is carried out advanced treating the most according to claim 7, it is characterised in that: It is equipped with agitator in described collection regulating reservoir and described storage regulating reservoir.
9. the method that the biogas slurry in domestic methane tank is carried out advanced treating, it is characterised in that: comprise the following steps:
Ferment in second time: biogas slurry be placed in secondary fermentation device and carry out ferment in second time, is allowed to become thoroughly decomposed completely, reduces in biogas slurry COD and concentration of suspension, improve small organic molecule and inorganic matter quantity；
MBR reacts: the biogas slurry after ferment in second time is put into MBR reaction tank and carries out membrance separation and biological treatment；
Concentrate: the permeate of MBR reaction tank is put into enrichment facility and concentrates, obtain the most former of GB drip irrigation fertilizer Material or foliage fertilizer；
Treatment of Sludge: the trapped fluid of MBR reaction tank is carried out Treatment of Sludge in sludge treatment equipment, obtains SOLID ORGANIC Fertilizer.
10. the method that the biogas slurry in domestic methane tank is carried out advanced treating, it is characterised in that: comprise the following steps:
Collect regulation: the biogas slurry in each domestic methane tank is put into collection regulating reservoir, is uniformly mixed；
Ferment in second time: the biogas slurry after collection having been regulated is placed in secondary fermentation device and carries out ferment in second time, is allowed to complete Become thoroughly decomposed, reduce COD and concentration of suspension in biogas slurry, improve small organic molecule and inorganic matter quantity；
Store regulation: the biogas slurry after ferment in second time is put into storage regulating reservoir, is uniformly mixed；
MBR reacts: the biogas slurry after ferment in second time is put into MBR reaction tank and carries out membrance separation and biological treatment；
Concentrate: the permeate of MBR reaction tank is put into enrichment facility and concentrates, obtain the most former of GB drip irrigation fertilizer Material or foliage fertilizer；
Treatment of Sludge: the trapped fluid of MBR reaction tank is carried out Treatment of Sludge in sludge treatment equipment, obtains SOLID ORGANIC Fertilizer.
11. according to the biogas slurry deep treatment method described in claim 9 or 10, it is characterised in that: described concentration step has Body includes that the permeate of MBR reaction tank is put into nanofiltration device carries out nanofiltration, and obtaining can be main as GB drip irrigation fertilizer The nanofiltration trapped fluid of raw material, or nanofiltration trapped fluid is put into multi-effect evaporator carry out multiple-effect evaporation, obtain foliage fertilizer.
12. according to the biogas slurry deep treatment method described in claim 9 or 10, it is characterised in that: described Treatment of Sludge walks Suddenly specifically include and the trapped fluid of MBR reaction tank is put into sludge concentration tank concentrate, then gained mud after concentration is led to Crossing screw pump to be delivered to plate type pressure filter and carry out filter pressing, filter cake is put into centrifuge and is centrifuged dehydration the most at last, consolidate Body organic fertilizer and the primary raw material of enterprise's mark punching fertilising.
CN201610608253.6A 2016-07-28 2016-07-28 Advanced treatment system and method for biogas slurry in domestic household biogas tank Pending CN106007255A (en)

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CN107117780A (en) * 2017-06-28 2017-09-01 山西玉衡同创环境技术有限公司 Vehicular biogas slurry recycling treatment system
CN107381930A (en) * 2017-05-26 2017-11-24 广东工业大学 Denitrification dephosphorization system of the heavy metal flocculation joint energy microalgae to biogas slurry of fermenting
CN109912100A (en) * 2019-04-12 2019-06-21 北京天极视讯科技发展有限公司 A kind of biogas slurry high power concentration systems

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN107381930A (en) * 2017-05-26 2017-11-24 广东工业大学 Denitrification dephosphorization system of the heavy metal flocculation joint energy microalgae to biogas slurry of fermenting
CN107117780A (en) * 2017-06-28 2017-09-01 山西玉衡同创环境技术有限公司 Vehicular biogas slurry recycling treatment system
CN107117780B (en) * 2017-06-28 2020-09-01 山西玉衡同创环境技术有限公司 Vehicle-mounted biogas slurry recycling treatment system
CN109912100A (en) * 2019-04-12 2019-06-21 北京天极视讯科技发展有限公司 A kind of biogas slurry high power concentration systems

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