CN105400824B - The anaerobic digestion process of kitchen garbage - Google Patents
The anaerobic digestion process of kitchen garbage Download PDFInfo
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- CN105400824B CN105400824B CN201510926698.4A CN201510926698A CN105400824B CN 105400824 B CN105400824 B CN 105400824B CN 201510926698 A CN201510926698 A CN 201510926698A CN 105400824 B CN105400824 B CN 105400824B
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- 230000029087 digestion Effects 0.000 title claims abstract description 103
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 117
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
- 239000007791 liquid phase Substances 0.000 claims abstract description 36
- 238000003746 solid phase reaction Methods 0.000 claims abstract description 35
- 238000007654 immersion Methods 0.000 claims abstract description 31
- 239000002699 waste material Substances 0.000 claims abstract description 25
- 238000002386 leaching Methods 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 12
- 239000010802 sludge Substances 0.000 claims abstract description 6
- 239000007790 solid phase Substances 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims description 33
- 239000000945 filler Substances 0.000 claims description 25
- 239000004744 fabric Substances 0.000 claims description 16
- 239000002910 solid waste Substances 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 8
- 239000010865 sewage Substances 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 5
- 235000015097 nutrients Nutrition 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- -1 that is Substances 0.000 claims description 4
- 239000000969 carrier Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 abstract 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 238000009826 distribution Methods 0.000 description 5
- 241000894007 species Species 0.000 description 5
- 241001465754 Metazoa Species 0.000 description 3
- 238000007037 hydroformylation reaction Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
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- 230000001079 digestive effect Effects 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
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- 239000012530 fluid Substances 0.000 description 2
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- 239000010794 food waste Substances 0.000 description 2
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- 239000008103 glucose Substances 0.000 description 2
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- 241001148471 unidentified anaerobic bacterium Species 0.000 description 2
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- 239000010963 304 stainless steel Substances 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical class [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical class [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
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- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical class [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical class [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
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- 239000010893 paper waste Substances 0.000 description 1
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- 230000000505 pernicious effect Effects 0.000 description 1
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- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- 235000011083 sodium citrates Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical class [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 1
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- 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
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/34—Internal compartments or partitions
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- 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
- C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- 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
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/26—Conditioning fluids entering or exiting the reaction vessel
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
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Abstract
The invention discloses a kind of anaerobic digestion process of kitchen garbage, setting solid phase reaction area and liquid phase reactor area in the reactor body of anaerobic digestion device used, gas outlet, recirculation water water inlet is arranged in reactor head, and temperature-measuring port, spray head is arranged in recirculation water water inlet lower part, water outlet is set under liquid phase reactor area, and water inlet and sludge pipe is arranged in reactor bottom.When carrying out anaerobic digestion to kitchen garbage, in such a way that alternate run is reacted in immersion type anaerobic digestion and leaching, the solid phase residue of kitchen garbage and liquid phase waste liquid can be made all to be able to abundant anaerobic digestion reaction, utmostly so that kitchen garbage is handled, maximum recycling treatment is realized.
Description
The application is application No. is 201410178288.1, and the applying date is on April 29th, 2014, and invention and created name is
The divisional application of the application for a patent for invention of " anaerobic digestion device and digestion method of kitchen garbage ".
Technical field
The present invention relates to a kind of anaerobic digester systems, and in particular to a kind of anaerobic digestion process of kitchen garbage.
Background technology
Kitchen garbage refer to the food waste of family, school, organ, canteen and catering industry, food and drink residue,
Food processing waste material and the animal and plant fat that can not be eaten again and all kinds of oil water mixtures, are a parts for domestic waste.
Country's rubbish from cooking processing mode mainly to fill, based on burning disposal together with house refuse at present, landfill disposal mode
The service life of landfill yard can be reduced, and for burning disposal mode, China only has a small number of flourishing cities such as Shenzhen and uses rubbish
Rubbish incineration technology, and also not to the pernicious gases such as dioxin, nitrogen oxides, sulfur dioxide, dust, waste water etc. caused by burning
It can effectively control.In order to realize the sustainable development of resource, it is necessary to find more effective processing mode, that realizes rubbish from cooking has
Recycling is imitated, great meaning is generated to the economy and environmental development in China.
Anaerobic digestion is a series of processes of microorganism decomposing organism degradation material there is no oxygen.It is raw
Biodegradable material includes waste paper, kitchen garbage, high concentrated organic wastewater, animal excrements and liquid wastes etc..Anaerobic digestion
It is suitable for the organic material of processing moistening, is widely used in the processing of debirs.
Such as 102939369 A of Chinese patent literature CN（Application number 201080063847.4）It is anti-to disclose a kind of anaerobism
It is the form of tank to answer device, reactor, and the room of separation is separated by solid parts.Each room includes feed distribution system, fills out
The device for filling bed and being discharged for biogas and liquid.Lead in use, feed distribution system will feed substantially homogeneously distribution
Cross the base portion of each room.The reative cell each stacked includes preferably blending space, contains or is suitable for containing feeding line
Or feed distribution system.Feed distribution system is operable to be delivered and distributed to the base portion of room and by itself and anaerobism with that will feed
Bacterium mixes.In the top of blending space, usually setting has the packed bed of upper filling grid and lower filling grid.Packed bed packet
Include filled media and anaerobic bacteria.The charging in blending space is mainly converted into volatilization by the anaerobic bacteria included by interior
Property aliphatic acid, hydrogen and carbon dioxide.Any suitable filled media can use in packed bed.In order to be carried for methane-producing bacteria
For suitable environment, filled media has high surface-to-volume ratio.But the anaerobic reactor structure is more complex, material when operation
Flow into and out control it is cumbersome.
Invention content
Technical problem to be solved by the invention is to provide a kind of anaerobism simple in structure, the high kitchen garbage of digestible degree
Digestion method.
Realize that the technical solution of the object of the invention is a kind of anaerobic digestion device of kitchen garbage, including reactor body,
Upper cover, circulating pump, hydraulic pipeline, water return pipeline, control valve and former pond；Circulating pump is bidirectional circulating pump；Upper cover is arranged anti-
The top of device main body is answered, the cavity inside reactor body is sealed；Circulating pump is defeated by the waste liquid in former pond by hydraulic pipeline
It send to the water inlet of reactor body bottom, circulating pump is returned the reaction solution inside reactor body from top by water return pipeline
It streams into inside reactor.
Reactor body is internally provided with solid phase reaction area and liquid phase reactor area, and the bottom of reactor body is arranged equipped with bottom
Mud mouth；Liquid phase reactor area includes the filler between upper and lower sieve and two sieves；The upper screen cloth that solid phase reaction area is located at it is upper
The bottom of side, solid phase reaction area is equipped with mud discharging mouth.
Above-mentioned upper lid is equipped with gas outlet, reflux water inlet and temperature-measuring port；Gas outlet is connected with escape pipe, escape pipe with
Gas reservoir is connected；Reflux water inlet is connected with the water outlet of water return pipeline；It is arranged for detecting reactor master in temperature-measuring port
The temperature probe of the temperature in internal portion.
The hydraulic pipeline includes first pipe, second pipe, third pipeline, the 4th pipeline successively according to the flow direction of liquid
And water inlet pipe；The water inlet of first pipe is located at below the liquid level in former pond, the water outlet of first pipe and the first threeway
Right interface is connected, and the left interface of the first threeway is connected with the water inlet end of second pipe, the water outlet of second pipe and circulating pump
Right side port is connected, and the left side port of circulating pump is connected with the water inlet end of third pipeline, the water outlet of third pipeline and the two or three
Logical right interface be connected, the upper interface of the second threeway is connected with the water inlet end of the 4th pipeline, the water outlet of the 4th pipeline and into
The water inlet end of water pipe is connected, and the water outlet of water inlet pipe is stretched into from the bottom of reactor body in reactor body, and water inlet pipe goes out
Water end (W.E.) connects water distributor.
The water return pipeline according to liquid flow direction successively include outlet pipe, the 5th pipeline, the 6th pipeline, the 7th pipeline and
8th pipeline；The water inlet port of outlet pipe is located at the lower end in liquid phase reactor area, the water inlet of the water outlet of outlet pipe and the 5th pipeline
Mouth is connected, and the water outlet of the 5th pipeline is connected with the left interface of third threeway, and the right interface of third threeway is connected with the 6th pipeline,
The water outlet of 6th pipeline connects fluid reservoir；The lower interface of third threeway is connected with the water inlet of the 7th pipeline, and the 7th pipeline goes out
The mouth of a river is connected with the left interface of the second threeway, and the 7th pipeline passes through the second threeway, the third pipeline and circulating pump of hydraulic pipeline
Left side port be connected, the right side port of circulating pump by the second pipe of hydraulic pipeline and the first threeway and the 8th pipeline into
The mouth of a river is connected, and the water outlet of the 8th pipeline is connected with the water inlet end of reflux water inlet pipe, and the water outlet for the water inlet pipe that flows back is stretched from upper cover
Enter in reactor body.
A kind of anaerobic digestion device of kitchen garbage as described above carries out anaerobic digestion process to kitchen garbage, including with
Lower step：
1. tamed strain, the strain after domestication is attached on filler.
2. the separation of solid and liquid of kitchen garbage, kitchen garbage is separated by solid-liquid separation, containing for isolated Solid Waste is solid
Rate is 70%~80%, is stored in former mud sump；Liquid phase rubbish, that is, waste liquid storage is pending in former pond.
3. the filling of material is opened the upper cover at the top of reactor body, will be filled between the upper and lower sieve in liquid phase reactor area
The full filler of step 1., anaerobic species are attached to inside filler；Then the Solid Waste in former mud sump is transferred on upper screen cloth
Side, the placing height of Solid Waste are the 1/5~2/5 of reactor body height, and Solid Waste covers upper cover after loading.
4. the anaerobic digestion process total time-consuming of the anaerobic digestion of kitchen garbage, kitchen rubbish is 24~42 days, disappeared by 3~5
Change period composition, each digestion period includes immersion type anaerobic digestion process and leaching reaction process successively；Immersion type anaerobic
Waste liquid submerges Solid Waste in digestion process；Reaction solution in leaching reaction process in liquid phase reactor area is conveyed by water return pipeline
To the top of reactor body, reaction solution sprays above the solid refuse in solid phase reaction area；After 3~5 digestion periods
Complete the anaerobic digestion process of kitchen garbage.
Above-mentioned steps 1. domesticated strain when, take solid content be 5%~7% municipal sewage plant anaerobic pond in former mud
Be fitted into culture pond, filler be put into culture pond, the former mud submerged carriers in culture pond, when domesticated strain, into culture pond plus
Enter nutrient solution, 10~15d of strain domestication at 33 DEG C~37 DEG C.
Above-mentioned steps 4. anaerobic digestion of kitchen wastes when, carry out first digestion period immersion type anaerobic digestion process
When, the control valve on hydraulic pipeline is opened, the control valve on water return pipeline is closed；Circulating pump is opened, circulating pump will be in former pond
Waste liquid be sent into reactor body from the water inlet pipe of reactor body bottom, wait for the solid refuse in liquid level submergence solid phase reaction area
Top, close circulating pump, start immersion type anaerobic processing, immersion type anaerobic processing continues 4~7 days；
After waiting for immersion type anaerobic digestion process, the control valve on hydraulic pipeline is closed, opens the control on water return pipeline
Valve processed；Circulating pump is opened, the reaction solution in liquid phase reactor area is delivered to the top of reactor body by circulating pump by water return pipeline
Portion, reaction solution spray above the solid refuse in solid phase reaction area, and the solid refuse in solid phase reaction area carries out leaching reaction 4~7
It, completes a cycle of anaerobic digestion；
When carrying out the immersion type anaerobic digestion process of second digestion period, the third on circulating pump and water return pipeline is closed
Control valve and the 5th control valve；Sludge in reactor body carries out immersion type anaerobic processing, continues 4~7 days；
After the immersion type anaerobic digestion process for waiting for second digestion period, the third control valve on water return pipeline is opened
With the 5th control valve；Circulating pump is opened, the reaction solution in liquid phase reactor area is delivered to reactor by circulating pump by water return pipeline
The top of main body, reaction solution spray above the solid refuse in solid phase reaction area, and the solid refuse in solid phase reaction area carries out leaching
Reaction 4~7 days, to complete kitchen garbage second period anaerobic digestion process；
The step of third digestion period to the 5th digestion period, is identical as second digestion period.
The present invention has the effect of positive：（1）The slaking apparatus of the present invention is by being arranged bidirectional circulating pump, in anaerobic digestion
Starting stage the liquid in pending kitchen garbage is sent into from the bottom water inlet of reactor body in reactor body
The liquid inside reactor body is extracted out from the outlet pipe of reactor body lower part, so after anaerobic digestion for a period of time in portion
It is delivered to the top of reactor afterwards, is sprayed from the top of reactor to the solid phase reaction area inside reactor body.One two-way
Circulating pump completes the liquid conveying of reaction system, and entire reaction unit is simple in structure, easy for construction and easy to operate.
（2）The anaerobic digestion process of the kitchen garbage of the present invention, first will meal when carrying out anaerobic digestion to kitchen garbage
Kitchen rubbish carries out Solid-Liquid Separation, and by Solid Waste storage in former mud sump, liquid phase rubbish, that is, waste liquid storage is in former pond；It waits locating
The Solid Waste of reason is transferred to the solid reaction area of the reactor body of slaking apparatus in advance, and the waste liquid in former pond is by circulating pump
It is delivered to the Solid Waste of immersion solid reaction zone inside reactor body, after anaerobic digestion for a period of time, then by reactor master
Reaction solution in body is extracted out from top spray from reactor body lower part in solid phase reaction area, is digested and is drenched by immersion type anaerobic
The mode of filter reaction alternate run, it is anti-can so that the solid phase residue of kitchen garbage and liquid phase waste liquid are all able to abundant anaerobic digestion
It answers, utmostly so that kitchen garbage is handled, realizes maximum recycling treatment.This device and method is removed simultaneously
Outside processing kitchen garbage, the organic solid castoffs such as chicken manure, municipal sludge can be also handled.
Description of the drawings
Fig. 1 is the structural schematic diagram of the anaerobic digestion device of the present invention；
Label in above-mentioned attached drawing is as follows：Reactor body 1, solid phase reaction area 11, mud discharging mouth 11-1, liquid phase reactor area
12, sieve 12-1, filler 12-2, bottom mud discharging mouth 13；
Upper cover 2, escape pipe 21, flow back water inlet pipe 22, spray head 23, temperature probe 24；
Circulating pump 3；
Hydraulic pipeline 4, first pipe 41, second pipe 42, third pipeline 43, the 4th pipeline 44；Water inlet pipe 45, water distributor
45-1,
Water return pipeline 5, outlet pipe 51, the 5th pipeline 52, the 6th pipeline 53, the 7th pipeline 54, the 8th pipeline 55；
First control valve 61, the second control valve 62, third control valve 63, the 4th control valve 64, the 5th control valve 65；
Former pond 7.
Specific implementation mode
（The anaerobic digestion device of embodiment 1, kitchen garbage）
See Fig. 1, the anaerobic digestion device of the kitchen garbage of the present embodiment include reactor body 1, upper cover 2, circulating pump 3,
Hydraulic pipeline 4, water return pipeline 5, control valve and former pond 7.Upper cover 2 is arranged at the top of reactor body 1, seals reactor master
Cavity inside body 1.Waste liquid in former pond 7 is delivered to the water inlet of reactor body 1 by hydraulic pipeline 4 by circulating pump 3,
Reaction solution inside reactor body 1 is flowed back above reactor by water return pipeline 5 and is sent into inside reactor 1 by circulating pump 3.
Reactor body 1 is internally provided with solid phase reaction area 11 and liquid phase reactor area 12, and the bottom of reactor body 1 is equipped with
Bottom mud discharging mouth 13.The liquid phase reactor area 12 is arranged in the lower part of the internal cavities of reactor body 1,11, solid phase reaction area
Top in liquid phase reactor area 12.
Liquid phase reactor area 12 includes the filler 12-2 between upper and lower sieve 12-1 and two sieves.Lower screen cloth 12-1 distances
The distance of 1 bottom of reactor body is the 1/10~1/5 of 1 height of reactor body.The distance between upper screen cloth and lower screen cloth are
The 2/5~3/5 of 1 height of reactor body.Upper screen cloth is all made of 304 stainless steel materials with lower screen cloth and is made, upper screen cloth and lower sieve
The mesh number of net is 500 mesh.
Space between the full upper and lower sieve 12-1 of filler 12-2 fillings.Attached biological film on filler 12-2 includes in filler
Anaerobic species, in order to provide suitable growing environment to anaerobic species, the material selected by filler 12-2 has high surface area/body
Product ratio.Filler 12-2 selected by the present embodiment protects the bio-film colonization composite filling of instrument factory purchased from the high path between fields perseverance ring of light of Yixing City,
Filler is made of semi-soft high molecular polymer and soft hydroformylation polyvinyl silk, and soft hydroformylation polyvinyl silk is compressed on semi-soft high score
On sub- polymer inner ring.The biomembrane is the microbial film being attached on filler after culture is tamed, and starts to hang on filler
When film since on the soft-filler hydroformylation polyvinyl at edge biofilm, after a week, biomembrane will extend to inner ring semi soft packing
On, make it is soft and it is semi-soft all tell on, be finally reached preferable treatment effect.
4 or 4 or more hooks of spaced set are fixed on the inner wall that upper screen cloth 12-1 passes through reactor body 1
The fixed form of the inside of reactor body 1, lower screen cloth 12-1 is identical as upper screen cloth 12-1.
Solid phase reaction area 11 is located at the top of upper screen cloth 12-1.The height in solid phase reaction area 11 is 1 height of reactor body
1/5~2/5.The bottom in solid phase reaction area 11 is equipped with mud discharging mouth 11-1, and mud discharging mouth 11-1 is located at the top of upper screen cloth 12-1.
Upper cover 2 is equipped with gas outlet, reflux water inlet and temperature-measuring port.Gas outlet is connected with escape pipe 21, escape pipe 21
It is connected with gas reservoir.Reflux water inlet is connected with reflux water inlet pipe 22, and spray head is arranged in the water outlet of reflux water inlet pipe 22
23.Temperature probe 24 is set in temperature-measuring port, for detecting the temperature inside reactor body 1.
Circulating pump 3 is bidirectional circulating pump, and bidirectional circulating pump used in the present embodiment is the limited public affairs of Baoding Lange constant flow pump
The bidirectional circulating pump of the JL350-2J models of department.
The hydraulic pipeline 4 according to liquid flow direction successively include first pipe 41, second pipe 42, third pipeline 43,
4th pipeline 44 and water inlet pipe 45.The water inlet of first pipe 41 is located at below the liquid level in former pond 7, and first pipe 41 goes out
The mouth of a river is connected with the right interface of the first threeway, and the left interface of the first threeway is connected with the water inlet end of second pipe 42, second pipe
42 water outlet is connected with the right side port of circulating pump 3, and the left side port of circulating pump 3 is connected with the water inlet end of third pipeline 43,
The water outlet of third pipeline 43 is connected with the right interface of the second threeway, the water inlet of the upper interface and the 4th pipeline 44 of the second threeway
End is connected, and the water outlet of the 4th pipeline 44 is connected with the water inlet end of water inlet pipe 45, and the water outlet of water inlet pipe 45 is from reactor body 1
Bottom stretch into reactor body 1, the water outlet of water inlet pipe 45 connection water distributor 45-1.
The water return pipeline 5 includes outlet pipe 51, the 5th pipeline 52, the 6th pipeline 53, the successively according to the flow direction of liquid
Seven pipelines 54 and the 8th pipeline 55.The water inlet port of outlet pipe 51 is located at the lower end in liquid phase reactor area 12, the water outlet of outlet pipe 51
Mouth is connected with the water inlet of the 5th pipeline 52, and the water outlet of the 5th pipeline 52 is connected with the left interface of third threeway, third threeway
Right interface be connected with the 6th pipeline 53, the water outlet of the 6th pipeline 53 connects fluid reservoir；The lower interface of third threeway and the 7th pipe
The water inlet in road 54 is connected, and the water outlet of the 7th pipeline 54 is connected with the left interface of the second threeway, and the 7th pipeline 54 passes through the
Two threeways, the third pipeline 43 of hydraulic pipeline 4 are connected with the left side port of circulating pump 3, and the right side port of circulating pump 3 passes through water delivery
The second pipe 42 of pipeline 4 and the first threeway are connected with the water inlet of the 8th pipeline 55, the water outlet of the 8th pipeline 55 and reflux
The water inlet end of water inlet pipe 22 is connected, and the water outlet of reflux water inlet pipe 22 is stretched into from upper cover 2 in reactor body 1.
Water return pipeline 5 shares one section of pipeline with hydraulic pipeline 4, can simplify pipe design, saves capital expenditure.
Control valve includes the first control valve 61, the second control valve 62, third control valve 63, the control of the 4th control valve 64 and the 5th
Valve 65 processed, is separately positioned on corresponding pipeline.Wherein the first control valve 61 is arranged in the first pipe 41 of hydraulic pipeline 4,
Second control valve 62 is arranged on the water inlet pipe 45 of hydraulic pipeline 4, and the outlet pipe 51 in water return pipeline 5 is arranged in third control valve 63
On, the 4th control valve 64 is arranged on the 6th pipeline 53 of water return pipeline 5, and the 5th control valve 65 is arranged the of water return pipeline 5
On eight pipelines 55.
The slaking apparatus of the present invention, can will be pending in the starting stage of anaerobic digestion by the way that bidirectional circulating pump is arranged
Liquid in kitchen garbage is sent into from the bottom water inlet of reactor body inside reactor body, waits for anaerobic digestion for a period of time
Afterwards, then by the liquid inside reactor body from the outlet pipe of reactor body lower part it extracts out, is then sent to the top of reactor
Portion is sprayed from the top of reactor to the solid phase reaction area inside reactor body.One bidirectional circulating pump completes reactant
The liquid of system conveys, and entire reaction unit pipe design is succinct, simple in structure, easy for construction and easy to operate.
The slaking apparatus of the present invention reactor body 1 inside points every setting solid phase reaction area 11 and liquid phase reactor area
12, rather than directly in 1 inside anaerobic digestion of reactor body after kitchen garbage is mixed with strain so that liquid phase waste has
There is higher digestive efficiency, while solid phase waste also can fully be digested, integrally digests factor of created gase to improve waste, together
When have solid phase liquid phase it is easily separated, react thorough advantage.
（Embodiment 2, the anaerobic digestion process of kitchen garbage）
Device used in the anaerobic digestion process of the kitchen garbage of the present embodiment fills for anaerobic digestion described in embodiment 1
It sets.
The anaerobic digestion process of the kitchen garbage of the present embodiment includes the following steps：
1. tamed strain.The former mud in the anaerobic pond that solid content is 5%~7% municipal sewage plant is taken to be packed into culture
Chi Zhong is put into filler 12-2 in culture pond, the former mud submerged carriers 12-2 in culture pond, when domesticated strain, to meet culture pond
The demand of interior microorganism growth, into culture pond, addition nutrient glucose, N, P and trace element Fe, Co, Ni are configured to
The culture solution of 10L is often added in nutrient solution in 1kg original mud；In medium temperature（35±2℃）Under the conditions of 10~15d of strain domestication.Domestication knot
The anaerobic species obtained after attachment domestication on filler 12-2 after beam.
In the culture solution, contain 1.03g glucose, 1g sodium bicarbonates nitrogen, 0.26g ammonium chlorides, 45mg per 1L culture solutions
Magnesium sulfate, 30mg dipotassium hydrogen phosphates, 25mg sodium citrates, 15mg calcium chloride, 1mg nickel sulfates, 4mg ferric trichlorides etc..
2. the separation of solid and liquid of kitchen garbage.By the food waste of family, school, organ, canteen and catering industry,
Food and drink residue, food processing waste material and the animal and plant fat that can not be eaten again and all kinds of oil water mixtures are sent into three-phase spiral and are squeezed
It is separated by solid-liquid separation in pressing dehydrator, the solid content of isolated Solid Waste is 70%~80%, is stored in former mud sump；Liquid phase
Rubbish, that is, waste liquid storage is pending in former pond 7.
Step 1. in step 2. time without priority point.
3. the filling of material.The upper cover 2 for opening 1 top of reactor body, will be between the upper and lower sieve in liquid phase reactor area 12
The filler 12-2 taken out in the full culture pond 1. from step of filling, anaerobic species are attached to inside filler 12-2；Then by former mud
Solid Waste in pond is transferred to above upper screen cloth, and the placing height of Solid Waste is the 1/5~2/5 of 1 height of reactor body.
Solid Waste covers upper cover 2 after loading.
4. the anaerobic digestion of kitchen garbage.The anaerobic digestion process total time-consuming of kitchen garbage is 24~42 days, by 3~5
Digestion period forms, each period includes immersion type anaerobic digestion process and leaching reaction process successively.Namely anaerobic digestion
In the process, immersion type anaerobic digestion process and leaching reaction process be alternately.
When carrying out the immersion type anaerobic digestion process of first digestion period, the first control valve on hydraulic pipeline 4 is opened
61 and second control valve 62, close third control valve 63, the 4th control valve 64 and the 5th control valve 65 on water return pipeline 5；It beats
Waste liquid in former pond 7 is sent into reactor body 1 by open cycle pump 3, circulating pump 3 from the water inlet pipe 45 of 1 bottom of reactor body
It is interior, it waits for the top of the solid refuse in liquid level submergence solid phase reaction area 11, starts the immersion type anaerobic digestion process of kitchen garbage, soak
Do not have formula Anaerobic Treatment to continue 4~7 days（It is 5 days in the present embodiment）.In immersion type anaerobic digestion process, oxidation-reduction potential ORP
For -200~-350mv, anaerobic digestion temperature is 35~40 DEG C.After waiting for immersion type anaerobic digestion process, hydraulic pipeline is closed
The first control valve 61 on 4 and the second control valve 62 open third control valve 63 and the 5th control valve 65 on water return pipeline 5；
Circulating pump 3 is opened, the reaction solution in liquid phase reactor area 12 is delivered to the top of reactor body 1 by circulating pump 3 by water return pipeline 5
Portion, reaction solution spray above the solid refuse in solid phase reaction area 11, and the solid refuse in solid phase reaction area 11 carries out leaching reaction 4
~7 days（It is 5 days in the present embodiment）, to complete kitchen garbage a cycle anaerobic digestion process.In leaching process,
Oxidation-reduction potential ORP is -200~-350mv, and the temperature of solid refuse is 35~40 DEG C.
When carrying out the immersion type anaerobic digestion process of second digestion period, the on circulating pump 3 and water return pipeline 5 is closed
Three control valves 63 and the 5th control valve 65；Sludge in reactor body 1 carries out immersion type anaerobic processing and continues 4~7 days（This reality
Apply in example is 5 days）.
After the immersion type anaerobic digestion process for waiting for second digestion period, the third control on water return pipeline 5 is opened
Valve 63 and the 5th control valve 65；Circulating pump 3 is opened, circulating pump 3 is defeated by water return pipeline 5 by the reaction solution in liquid phase reactor area 12
It send to the top of reactor body 1, reaction solution sprays above the solid refuse in solid phase reaction area 11, and solid phase reaction area 11 consolidates
Body rubbish carries out leaching and reacts 4~7 days（It is 5 days in the present embodiment）, to complete kitchen garbage second period anaerobism
Digestion process.
The step of third digestion period to the 5th digestion period, is identical as second digestion period.It is wrapped in the present embodiment
Include three digestion periods.
After the anaerobic digestion of kitchen garbage, circulating pump 3 is closed, opens the mud discharging mouth 11-1 of 11 lower section of solid phase reaction area
Postdigestive solid refuse is discharged, postdigestive solid refuse can be used for landscape, forest land and agricultural after killing pathogen
With fertilizer.The third control valve 63 and the 4th control valve 64 on water return pipeline 5 are opened, reactor body is discharged in reaction solution, is digested
Reaction solution organic concentration afterwards substantially reduces, and after being further processed into plant area's sewage treatment facility, can be discharged into sewage conduct,
It is uniformly processed into sewage treatment plant.
The methane generated in anaerobic digestion process is collected after the discharge of escape pipe 21 in gas reservoir.
The present embodiment makes to pass through under the anaerobic condition of kitchen garbage by way of immersion type anaerobic digestion and leaching reaction
Kitchen garbage mud is switched to clean energy resource by microbial action by anaerobic fermentation --- and methane can not only solve the place of kitchen garbage
Problem is set, can also reduce the dependence to fossil fuel to a certain extent, and then reduce due to the use of caused by fossil fuel
Problem of environmental pollution.It can be that society brings significant economy and environmental ecological benefit, advocate Green Chemistry, cleaning the 21 of chemical industry
Century has extremely tempting application prospect.
（Application examples 1）
The kitchen garbage of school lunch service is taken, before not carrying out Anaerobic Digestion, detection liquid phase waste liquid COD value is
120000mg/L；After carrying out Anaerobic Digestion according to the method for embodiment 2, the COD value of waste liquid drops to 6000~8000mg/
L, 88% or more postdigestive solid refuse loss of weight.Collection obtains methane 562.21L.
As a comparison, the kitchen garbage 1kg for equally taking school lunch service, before not carrying out Anaerobic Digestion, liquid phase waste liquid
COD value is 120000mg/L.When carrying out anaerobic digestion, kitchen garbage is directly directly mixed with the sludge 0.3kg after domestication, it is dirty
The step of acclimation method of mud is with embodiment 2 are 1. identical.After anaerobic digestion 30 days, the COD value of waste liquid drops to 10000~
13000mg/L.Collection obtains methane 489.12L.
Therefore the slaking apparatus of the present invention and method make the liquid phase waste that kitchen garbage is separated by solid-liquid separation have more
High digestive efficiency, while solid phase waste also can fully be digested, waste integrally digests gas production raising.
Claims (1)
1. a kind of anaerobic digestion process of kitchen garbage, it is characterised in that：Anaerobic digestion device used includes reactor body
（1）, upper cover（2）, circulating pump（3）, hydraulic pipeline（4）, water return pipeline（5）, control valve and former pond（7）；Upper cover（2）It is equipped with
Gas outlet, reflux water inlet and temperature-measuring port；Gas outlet and escape pipe（21）It is connected, escape pipe（21）It is connected with gas reservoir；
Flow back water inlet and water return pipeline（5）Water outlet be connected；It is arranged for detecting reactor body in temperature-measuring port（1）Internal
The temperature probe of temperature（24）；Circulating pump（3）For bidirectional circulating pump；Upper cover（2）It is arranged in reactor body（1）Top, it is close
Seal reactor body（1）Internal cavity；Circulating pump（3）Pass through hydraulic pipeline（4）By former pond（7）In waste liquid be delivered to instead
Answer device main body（1）The water inlet of bottom, circulating pump（3）Pass through water return pipeline（5）By reactor body（1）Internal reaction solution from
Reactor body is sent into top reflux（1）It is internal；
Reactor body（1）Be internally provided with solid phase reaction area（11）With liquid phase reactor area（12）, reactor body（1）Bottom
Equipped with bottom mud discharging mouth（13）；Liquid phase reactor area（12）Including upper and lower sieve（12-1）Filler between two sieves（12-
2）；Solid phase reaction area（11）Positioned at the top of upper screen cloth, solid phase reaction area（11）Bottom be equipped with mud discharging mouth（11-1）；
Anaerobic digestion process includes the following steps：
1. tamed strain, the strain after domestication is attached to filler（12-2）On；When domesticated strain, it is 5%~7% to take solid content
Former mud in the anaerobic pond of municipal sewage plant is fitted into culture pond, and filler is put into culture pond（12-2）, in culture pond
Former mud submerged carriers（12-2）, when domesticated strain, nutrient solution is added into culture pond, at 33 DEG C~37 DEG C strain domestication 10~
15d；
2. the separation of solid and liquid of kitchen garbage, kitchen garbage is separated by solid-liquid separation, the solid content of isolated Solid Waste is
70%~80%, it stores in former mud sump；Liquid phase rubbish, that is, waste liquid storage is in former pond（7）In it is pending；
3. reactor body is opened in the filling of material（1）The upper cover at top（2）, by liquid phase reactor area（12）Upper and lower sieve it
Between fill the full filler of step 1.（12-2）, anaerobic species are attached to filler（12-2）It is internal；Then by the solid phase in former mud sump
Rubbish is transferred to above upper screen cloth, and the placing height of Solid Waste is reactor body（1）The 1/5~2/5 of height, Solid Waste
Upper cover is covered after filling（2）；
4. the anaerobic digestion process total time-consuming of the anaerobic digestion of kitchen garbage, kitchen garbage is 24~42 days, digested by 3~5
Period forms, each digestion period includes immersion type anaerobic digestion process and leaching reaction process successively；Immersion type anaerobic disappears
Waste liquid submerges Solid Waste during change；Liquid phase reactor area in leaching reaction process（12）In reaction solution pass through water return pipeline
（5）It is delivered to reactor body（1）Top, reaction solution spray in solid phase reaction area（11）Solid refuse above；3~5
The anaerobic digestion process of kitchen garbage is completed after digestion period；
When carrying out the immersion type anaerobic digestion process of first digestion period, hydraulic pipeline is opened（4）On control valve, close back
Water lines（5）On control valve；Open circulating pump（3）, circulating pump（3）By former pond（7）In waste liquid from reactor body（1）
The water inlet pipe of bottom（45）It is sent into reactor body（1）It is interior, wait for liquid level submergence solid phase reaction area（11）Solid refuse top,
Close circulating pump（3）, start immersion type anaerobic processing, immersion type anaerobic processing continues 4~7 days；
After waiting for immersion type anaerobic digestion process, hydraulic pipeline is closed（4）On control valve, open water return pipeline（5）On
Control valve；Open circulating pump（3）, circulating pump（3）By liquid phase reactor area（12）In reaction solution pass through water return pipeline（5）It is delivered to
Reactor body（1）Top, reaction solution spray in solid phase reaction area（11）Solid refuse above, solid phase reaction area（11）'s
Solid refuse carries out leaching and reacts 4~7 days, completes a cycle of anaerobic digestion；
When carrying out the immersion type anaerobic digestion process of second digestion period, circulating pump is closed（3）And water return pipeline（5）On
Three control valves（63）With the 5th control valve（65）；Reactor body（1）Interior sludge carries out immersion type anaerobic processing, continues 4~7
It；
After the immersion type anaerobic digestion process for waiting for second digestion period, water return pipeline is opened（5）On third control valve
（63）With the 5th control valve（65）；Open circulating pump（3）, circulating pump（3）By liquid phase reactor area（12）In reaction solution by return
Water lines（5）It is delivered to reactor body（1）Top, reaction solution spray in solid phase reaction area（11）Solid refuse above,
Solid phase reaction area（11）Solid refuse carry out leaching react 4~7 days, to complete kitchen garbage second period anaerobism
Digestion process；
The step of third digestion period to the 5th digestion period, is identical as second digestion period.
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| CN105886393A (en) * | 2014-09-09 | 2016-08-24 | 北京建筑大学 | Sequencing batch type dry anaerobic digestion device of kitchen wastes |
| DE102017131089B4 (en) * | 2017-12-22 | 2022-06-30 | Jassen - Kunststoffzentrum Gmbh - Apparatebau, Zuschnitte Und Formung | Bioreactor and its use, method for producing an organic nutrient solution and organic nutrient solution |
| CN112658006B (en) * | 2020-12-04 | 2024-04-30 | 安徽欣瑞环保科技有限公司 | Anaerobic digestion device for kitchen waste |
| CN115159788B (en) * | 2022-07-28 | 2023-10-27 | 常州大学 | Kitchen waste digestion device |
| CN115488140B (en) * | 2022-09-09 | 2024-02-20 | 中节能(肥西)环保能源有限公司 | System and method for treating kitchen waste by coupling tidal type fermentation percolating bed and efficient anaerobic reactor |
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| CN103923821B (en) | 2016-01-06 |
| CN105368710B (en) | 2018-04-13 |
| CN103923821A (en) | 2014-07-16 |
| CN105400824A (en) | 2016-03-16 |
| CN105368710A (en) | 2016-03-02 |
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