CN111471585A - Fruit vegetables discarded object anaerobic fermentation substrate high-efficiency processing device - Google Patents
Fruit vegetables discarded object anaerobic fermentation substrate high-efficiency processing device Download PDFInfo
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- CN111471585A CN111471585A CN202010270024.4A CN202010270024A CN111471585A CN 111471585 A CN111471585 A CN 111471585A CN 202010270024 A CN202010270024 A CN 202010270024A CN 111471585 A CN111471585 A CN 111471585A
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- 238000000855 fermentation Methods 0.000 title claims abstract description 21
- 239000000758 substrate Substances 0.000 title claims abstract description 21
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- 235000013399 edible fruits Nutrition 0.000 title description 2
- 238000012545 processing Methods 0.000 title description 2
- 238000005273 aeration Methods 0.000 claims abstract description 127
- 239000002002 slurry Substances 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 239000002699 waste material Substances 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 238000005276 aerator Methods 0.000 claims description 32
- 235000012055 fruits and vegetables Nutrition 0.000 claims description 18
- 239000012528 membrane Substances 0.000 claims description 16
- 244000005700 microbiome Species 0.000 claims description 10
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 239000013049 sediment Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 235000015097 nutrients Nutrition 0.000 abstract description 22
- 239000003337 fertilizer Substances 0.000 abstract description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 14
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 7
- 239000011574 phosphorus Substances 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 7
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 6
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 abstract description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 5
- 150000001413 amino acids Chemical class 0.000 abstract description 5
- 230000000975 bioactive effect Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000004021 humic acid Substances 0.000 abstract description 5
- 150000007524 organic acids Chemical class 0.000 abstract description 5
- 229910052700 potassium Inorganic materials 0.000 abstract description 5
- 239000011591 potassium Substances 0.000 abstract description 5
- 235000013343 vitamin Nutrition 0.000 abstract description 5
- 229940088594 vitamin Drugs 0.000 abstract description 5
- 229930003231 vitamin Natural products 0.000 abstract description 5
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- 238000000034 method Methods 0.000 description 21
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- 238000005189 flocculation Methods 0.000 description 5
- 230000016615 flocculation Effects 0.000 description 5
- 239000003895 organic fertilizer Substances 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000001223 reverse osmosis Methods 0.000 description 4
- 238000000108 ultra-filtration Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
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- 241001247197 Cephalocarida Species 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000006396 nitration reaction Methods 0.000 description 2
- 230000000243 photosynthetic effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 241000108664 Nitrobacteria Species 0.000 description 1
- 241001052560 Thallis Species 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
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- 235000021049 nutrient content Nutrition 0.000 description 1
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- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
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- 238000011268 retreatment Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000003516 soil conditioner Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
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Classifications
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- 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
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F5/00—Fertilisers from distillery wastes, molasses, vinasses, sugar plant or similar wastes or residues, e.g. from waste originating from industrial processing of raw material of agricultural origin or derived products thereof
-
- 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
- C12M23/22—Transparent or translucent parts
-
- 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
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/26—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pH
-
- 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
- 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 a fruitThe efficient treatment device for the anaerobic fermentation substrate of the vegetable waste comprises a solid-liquid separation device, an aeration device, a bottom settling device and a storage device which are sequentially connected; the air compressor is connected with the aeration device; the aeration device comprises a first aeration device and a second aeration device which are arranged in parallel; and the combined biological filler units in the first aeration devices and the second aeration devices are arranged at equal intervals, the device has high treatment efficiency and low energy consumption, and can effectively reduce BOD of biogas slurry after treatment5The fertilizer contains heavy metal content, maintains the nutrient components of the fertilizer, contains a large amount of nutrient elements such as nitrogen, phosphorus and potassium necessary for crops, also contains various middle and trace nutrient elements, amino acid, vitamin, organic acid, humic acid and other bioactive substances, can be directly used for farmlands or subjected to nutrient blending according to the fertilizer requirement rule of different crops to prepare liquid water-soluble fertilizer, and realizes comprehensive utilization of resources.
Description
[ technical field ]
The invention relates to the technical field of fruit and vegetable waste treatment devices, in particular to a high-efficiency treatment device for anaerobic fermentation substrates of fruit and vegetable waste, which is reasonable in structural design and outstanding in application effect.
[ background art ]
At present, the biogas slurry treatment methods mainly include the following methods:
firstly, pollutants in the biogas slurry are degraded and absorbed by microorganisms and plants, and the treatment method has long treatment period and large occupied area;
secondly, the sewage is treated by using a sewage treatment process, anaerobic treatment, aerobic treatment and dosing flocculation precipitation are carried out, and then the sewage is discharged after reaching the standard, the method has high energy consumption and high cost, and nutritional ingredients necessary for crops in the biogas slurry are also treated, so that the biogas slurry cannot be recycled;
and thirdly, the biogas slurry is filtered and concentrated by a membrane technology, and the method has the advantages of complex process, high cost, low treatment efficiency and low concentration value, because about 97 percent of components in the biogas slurry are water.
CN105541057B discloses a method for recycling biogas slurry in a pig farm, which is characterized in that the biogas slurry is sequentially subjected to multistage aeration filtration, then photosynthetic bacteria are utilized to degrade organic matters in the biogas slurry and generate thalli, then microalgae are utilized to absorb nutrient salts such as nitrogen, phosphorus and the like in a water body and generate algal bodies, cladocera are utilized to filter and eat bacteria and algae in the water body in a non-selective manner, the photosynthetic bacteria, unicellular algae and cladocera generated in the biogas slurry treatment process are used for aquaculture and bait, the pollutant in the biogas slurry is recycled by means of a food chain, and the treated water reaches the standard and is discharged or recycled.
CN105692962B discloses a biogas slurry treatment and resource utilization method, which comprises the following steps: (1) carrying out secondary anaerobic digestion on the biogas slurry, and taking biogas residues as a solid organic fertilizer raw material; (2) performing flocculation precipitation treatment on effluent generated by secondary anaerobic treatment, and using generated sludge as a solid organic fertilizer raw material; (3) performing fine filtration treatment on effluent generated by flocculation precipitation, and returning generated backwash water to the mixed flocculation precipitation process for retreatment; (4) performing ultrafiltration treatment on effluent generated in the fine filtration process by using an ultrafiltration membrane component, and taking concentrated water generated in the ultrafiltration process as a liquid organic fertilizer raw material; (5) and (2) carrying out reverse osmosis treatment on clear water generated in the ultrafiltration process by adopting a reverse osmosis membrane component, taking concentrated water generated in the reverse osmosis process as a liquid organic fertilizer raw material, and directly discharging or recycling the clear water generated in the reverse osmosis process. The method has the advantages of long treatment period, high cost and low efficiency.
CN104445497B discloses a method for recovering nutrient substances in biogas slurry by using a combined adsorbent, which comprises the steps of firstly recovering ammonia nitrogen in the biogas slurry by using the selective adsorption of a 5A molecular sieve on the ammonia nitrogen, then decomposing macromolecular organic matters in the biogas slurry by using the photocatalytic property of titanium dioxide on the organic matters, and finally recovering the organic matters and phosphorus in the biogas slurry by using kaolin; the concentrated solution after 5A molecular sieve desorption is used for preparing a liquid nitrogen fertilizer, and the concentrated solution after kaolin desorption is used for preparing a liquid organic fertilizer; the waste adsorbent is used for preparing soil conditioner. The method has high treatment cost and low economic value because the nutrient content in the biogas slurry is very low.
CN106865900B discloses a biogas slurry treatment system and method, the system includes: the system comprises an electrolysis treatment unit, an artificial wetland treatment unit and a reflux unit, wherein heavy metal ions in biogas slurry are removed at a cathode plate of an electrolytic cell in the electrolysis treatment unit through flocculation; the biogas slurry treated by the electrolysis treatment unit enters the artificial wetland treatment unit, nitrate nitrogen is converted into nitrogen to be removed by the denitrification of the biogas slurry in the anaerobic zone, and meanwhile, a microbial battery is formed to supply power to the electrolysis treatment unit when the artificial wetland treatment unit works. The method has high treatment cost, high energy consumption and long period.
CN108328866A discloses a biogas slurry treatment system and method, which comprises adding chemicals into biogas slurry, flocculating until the suspended matter is less than 1200 mg/L, introducing the biogas slurry into a first-stage aeration biological filter loaded with aerobic microorganisms for oxidation reaction, introducing the biogas slurry into a second-stage aeration biological filter loaded with nitrobacteria for nitration reaction, introducing the biogas slurry into a microalgae culture reactor for microalgae culture after the nitration reaction, and finally discharging the effluent after reaching the standard.
In conclusion, the prior art generally has the problems of large occupied area, high energy consumption, complex process, long treatment period and capability of treating the nutrient components necessary for crops in the biogas slurry in the actual application process.
[ summary of the invention ]
In order to overcome the problems in the prior art, the invention provides the high-efficiency treatment device for the anaerobic fermentation substrate of the fruit and vegetable waste, which has reasonable structural design and outstanding application effect.
The invention provides a high-efficiency treatment device for anaerobic fermentation substrates of fruit and vegetable wastes, which comprises a solid-liquid separation device, an aeration device, a bottom settling device and a storage device which are sequentially connected, and further comprises an air compressor connected with the aeration device, wherein conveying pumps for conveying liquid are respectively connected between the aeration device and the bottom settling device and between the bottom settling device and the storage device, the aeration device comprises a first aeration device and a second aeration device which are arranged in parallel, a membrane type microporous aerator for improving oxygen utilization rate and a plurality of groups of combined biological filler units which are arranged at the upper part of the membrane type microporous aerator and used for aerobic microorganism adhesion and propagation are arranged in each of the first aeration device and the second aeration device, the combined biological filler units are arranged at equal intervals, the high-efficiency treatment device also comprises a P L C controller which is electrically connected with the aeration device, the bottom settling device and the storage device, and pH detectors for pH value detection are arranged at the positions of the first aeration device and the second aeration device, which are far from the bottom 1/5.
Preferably, the first aeration device and the second aeration device are respectively provided with a sewage outlet and a biogas slurry outlet; and the distance between the biogas slurry outlet and the bottoms of the first aeration device and the second aeration device is one third of the height of the biogas slurry outlet, and the sewage outlet is arranged at the bottom.
Preferably, the upper parts of the first aeration device and the second aeration device are provided with movable insect-proof nets; the mesh number of the movable insect-proof net is 40-80 meshes; the two ends of the insect-proof net are respectively connected with a fixing rod, the fixing rod at one end of the insect-proof net is fixed on each of the first aeration device and the second aeration device, the fixing rod at the other end of the insect-proof net is connected with a traction wire, and bearing wheel devices used for connecting the traction wire are respectively arranged at the two ends of each of the first aeration device and the second aeration device.
Preferably, the membrane type microporous aerator is a disc type microporous aerator or a tube type microporous aerator, and a plurality of self-closing holes are formed in a rubber membrane of the membrane type microporous aerator and can be automatically opened and closed along with the starting and closing of aeration.
Preferably, the diameter of the tubular microporous aerator is 65mm, the length of each pipe is 50cm-100cm, and the installation interval of each row is 50cm-100 cm.
Preferably, the bottom settling device comprises a settling tank bracket and a settling tank arranged on the settling tank bracket; the bottom of the settling tank is of a conical structure, a sediment discharge port is formed in the bottom of the conical settling tank, and a flange structure is connected to the sediment discharge port; the biogas slurry outlet is arranged at the lower part of the settling tank.
Preferably, the settling tank is made of polyethylene with certain transparency.
Preferably, the solid-liquid separation device and the air compressor are respectively communicated with the corresponding first aeration device and the second aeration device through branch pipelines.
Compared with the prior art, the efficient treatment device for the anaerobic fermentation substrate of the fruit and vegetable waste is provided with the solids which are sequentially connected at the same timeThe device comprises a liquid separation device 1, an aeration device 2, a bottom settling device 3, a storage device 4, an air compressor 21 connected with the aeration device 2, conveying pumps for conveying liquid are respectively connected and arranged between the aeration device 2 and the bottom settling device 3 and between the bottom settling device 3 and the storage device 4, the aeration device 2 comprises a first aeration device and a second aeration device which are arranged in parallel, a membrane type microporous aerator 22 for improving the oxygen utilization rate and a plurality of groups of combined biological filler units 23 which are arranged on the upper portion of the membrane type microporous aerator 22 and used for aerobic microorganism adhesion propagation are arranged in each group of combined biological filler units 23 at equal intervals, a P L C controller 5 electrically connected with the aeration devices 2, the bottom settling device 3 and the storage device 4 is further arranged, and a pH value 24 for pH value detection is arranged at the position of the first aeration device and the second aeration device, which is far from the bottom 1/55The fertilizer contains heavy metal content, maintains the nutrient components of the fertilizer, contains a large amount of nutrient elements such as nitrogen, phosphorus and potassium necessary for crops, also contains various middle and trace nutrient elements, amino acid, vitamin, organic acid, humic acid and other bioactive substances, can be directly used for farmlands or subjected to nutrient blending according to the fertilizer requirement rule of different crops to prepare liquid water-soluble fertilizer, and realizes comprehensive utilization of resources.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of an orthographic view of the efficient treatment device for the anaerobic fermentation substrate of the fruit and vegetable waste.
FIG. 2 is a schematic structural diagram of the fruit and vegetable waste anaerobic fermentation substrate high-efficiency treatment device in a top view state.
FIG. 3 is a schematic structural diagram of the insect-proof net in the device for the efficient treatment of anaerobic fermentation substrate of fruit and vegetable waste in a three-dimensional state.
[ detailed description of the invention ]
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 3, the efficient treatment device 10 for anaerobic fermentation substrates of fruit and vegetable wastes comprises a solid-liquid separation device 1, an aeration device 2, a bottom settling device 3 and a storage device 4 which are sequentially connected, an air compressor 21 connected with the aeration device 2, conveying pumps for conveying liquid are respectively connected between the aeration device 2 and the bottom settling device 3 and between the bottom settling device 3 and the storage device 4, the aeration device 2 comprises a first aeration device and a second aeration device which are arranged in parallel, a diaphragm type microporous aerator 22 for improving oxygen utilization rate and a plurality of groups of combined biological filler units 23 which are arranged on the upper portion of the diaphragm type microporous aerator 22 and used for adhesion and propagation of aerobic microorganisms are arranged in the first aeration device and the second aeration device, the combined biological filler units 23 are arranged at equal intervals, a P L C controller 5 electrically connected with the aeration devices 2, the bottom settling device 3 and the storage device 4 is further provided with a pH detector 24 for pH value detection at a position of a distance 1/5 between the first aeration device and the second aeration device.
The device is characterized in that a solid-liquid separation device 1, an aeration device 2, a bottom sinking device 3 and a storage device 4 which are sequentially connected are simultaneously arranged, the device further comprises an air compressor 21 connected with the aeration device 2, conveying pumps for conveying liquid are respectively arranged between the aeration device 2 and the bottom sinking device 3 and between the bottom sinking device 3 and the storage device 4, the aeration device 2 comprises a first aeration device and a second aeration device which are arranged in parallel, a diaphragm type microporous aerator 22 for improving the oxygen utilization rate and a plurality of groups of combined biological filler units 23 for attaching and propagating aerobic microorganisms are arranged in the first aeration device and the second aeration device, the diaphragm type microporous aerator 22 is arranged at the upper part of the diaphragm type microporous aerator 22, the combined biological filler units 23 are arranged at equal intervals, the P L C controller 5 is electrically connected with the aeration device 2, the bottom sinking device 3 and the storage device 4, and the first aeration device and the second aeration device are arranged at the height from the bottom 1/5The pH detector 24 for detecting the pH value has high treatment efficiency and low energy consumption, and can effectively reduce BOD of biogas slurry after treatment5The fertilizer contains heavy metal content, maintains the nutrient components of the fertilizer, contains a large amount of nutrient elements such as nitrogen, phosphorus and potassium necessary for crops, also contains various middle and trace nutrient elements, amino acid, vitamin, organic acid, humic acid and other bioactive substances, can be directly used for farmlands or subjected to nutrient blending according to the fertilizer requirement rule of different crops to prepare liquid water-soluble fertilizer, and realizes comprehensive utilization of resources.
Preferably, the first aeration device and the second aeration device are respectively provided with a sewage outlet 25 and a biogas slurry outlet 26; and the distance between the biogas slurry outlet 26 and the bottoms of the first aeration device and the second aeration device is one third, and the sewage outlet 25 is arranged at the bottom.
Preferably, the upper parts of the first aeration device and the second aeration device are provided with movable insect-proof nets; the mesh number of the movable insect-proof net is 40-80 meshes; the two ends of the insect-proof net are respectively connected with a fixing rod 27, the fixing rod 27 at one end of the insect-proof net is fixed on each of the first aeration device and the second aeration device, the fixing rod at the other end is connected with a pull wire 28, and bearing wheel devices 29 used for connecting the pull wires 28 are respectively arranged at the two ends of each of the first aeration device and the second aeration device.
Preferably, the membrane type microporous aerator 22 is a disc type microporous aerator or a tube type microporous aerator, and a plurality of self-closing holes are formed in the rubber membrane of the membrane type microporous aerator 22 and can be automatically opened and closed along with the starting and closing of aeration.
Preferably, the diameter of the tubular microporous aerator 22 is 65mm, the length of each pipe is 50cm-100cm, and the installation interval of each row is 50cm-100 cm.
Preferably, the bottom settling device 3 comprises a settling tank bracket 32 and a settling tank 31 arranged on the settling tank bracket 32; the bottom of the settling tank 31 is of a conical structure, a sediment outlet 33 is formed in the bottom of the conical settling tank 31, and the position of the sediment outlet 33 is connected with a flange structure; and a biogas slurry outlet 34 arranged at the lower part of the settling tank 31.
Preferably, the settling tank 31 is made of polyethylene with certain transparency.
Preferably, the solid-liquid separation device 1 and the air compressor 21 are respectively communicated with the corresponding first aeration device and the second aeration device through branch pipelines.
With the increasing of biogas digesters for treating various agricultural wastes, the biogas slurry and biogas residues are difficult to treat, the continuous development of biogas engineering is seriously restricted, the biogas slurry can be efficiently treated, and the BOD of the biogas slurry can be effectively reduced5The fertilizer contains heavy metal content and nutrient components, contains a large amount of nutrient elements such as nitrogen, phosphorus and potassium necessary for crops, also contains various middle and trace nutrient elements, amino acid, vitamin, organic acid, humic acid and other bioactive substances, can be directly used for farmlands or prepared into liquid water-soluble fertilizer according to the fertilizer requirement rule of different crops, realizes comprehensive utilization of resources, effectively solves the problem of utilization of biogas slurry with increasing production amount, realizes the healthy development of green agriculture, is beneficial to solving the problems of environmental pollution, resource shortage, planting safety and the like in agriculture and environmental protection industries of China, particularly in large cities, and has good market prospect.
The first aeration device and the second aeration device are characterized in that:
(1) the single volume of the first aeration device and the second aeration device is not less than three days of fermentation substrate production, and outlets are respectively arranged at the bottom and the position 1/3 away from the bottom of the aeration device;
(2) the first aeration device and the second aeration device are vertically provided with combined biological fillers for aerobic microorganism adhesion and propagation, and the bottom of the first aeration device and the second aeration device is provided with a diaphragm type microporous aerator for improving the utilization rate of oxygen.
The diaphragm type microporous aerator adopts a disc type microporous aerator or a tubular type microporous aerator, a large number of self-closing holes are formed in a rubber diaphragm, and the self-closing holes can be automatically opened and closed along with the starting and closing of aeration.
The specification of the tubular microporous aerator is 65mm in diameter, 50cm-100cm in length of a single pipe, and 50cm-100cm in installation interval of each row.
(3) Aerobic microorganisms are inoculated in the first aeration device and the second aeration device.
(4) A pH meter is respectively arranged in the first aeration device and the second aeration device at the height from the bottom 1/5.
(5) The opening is provided with a movable insect-proof net with 40-80 meshes.
The settling device disclosed by the invention has the following characteristics:
(1) the bottom of the bottom sinking device 3 is conical, the vertex of the cone is arranged below, and a sediment discharge port is arranged at the vertex and connected by a flange.
(2) The biogas slurry outlet is arranged at the bottom of the cylindrical tank body and connected by a flange.
(3) The cylindrical tank body is provided with a vertically arranged perspective window for observing the biogas slurry precipitation condition.
Compared with the prior art, the high-efficiency treatment device 10 for anaerobic fermentation substrates of fruit and vegetable wastes comprises a solid-liquid separation device 1, an aeration device 2, a bottom settling device 3 and a storage device 4 which are sequentially connected, and further comprises an air compressor 21 connected with the aeration device 2, wherein conveying pumps for conveying liquid are respectively connected between the aeration device 2 and the bottom settling device 3 and between the bottom settling device 3 and the storage device 4, the aeration device 2 comprises a first aeration device and a second aeration device which are arranged in parallel, a diaphragm type microporous aerator 22 for improving the oxygen utilization rate and a plurality of groups of combined biological filler units 23 which are arranged at the upper part of the diaphragm type microporous aerator 22 and used for attaching and breeding aerobic microorganisms are arranged in the first aeration device and the second aeration device, the combined biological filler units 23 are arranged at equal intervals, the high-efficiency treatment device 10 further comprises a P L C controller 5 which is electrically connected with the aeration devices 2, the bottom settling device 3 and the storage device 4, a pH detector 24 for detecting the pH value is arranged at the position of the bottom 1/5 of the first aeration device and the second aeration device, the high-efficiency treatment device can effectively reduce the pH value after the treatment, and the high-efficiency treatment of the biogas slurry can be5And heavy metal content whileThe fertilizer retains the nutrient components, contains a large amount of nutrient elements of nitrogen, phosphorus and potassium necessary for crops, also contains various medium and trace nutrient elements, amino acid, vitamin, organic acid, humic acid and other bioactive substances, can be directly used for farmlands or subjected to nutrient blending according to the fertilizer requirement rules of different crops to prepare liquid water-soluble fertilizer, and realizes comprehensive utilization of resources.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. The efficient treatment device for the anaerobic fermentation substrate of the fruit and vegetable wastes is characterized by comprising a solid-liquid separation device, an aeration device, a bottom sinking device and a storage device which are sequentially connected, an air compressor connected with the aeration device, conveying pumps used for conveying liquid are respectively connected between the aeration device and the bottom sinking device and between the bottom sinking device and the storage device, the aeration device comprises a first aeration device and a second aeration device which are arranged in parallel, a diaphragm type microporous aerator used for improving oxygen utilization rate and a plurality of groups of combined biological filler units used for aerobic microorganism adhesion and propagation are arranged in the first aeration device and the second aeration device, the groups of combined biological filler units are arranged at equal intervals, the efficient treatment device further comprises a P L C controller electrically connected with the aeration devices, the bottom sinking device and the storage device, and pH detectors used for pH value detection are arranged at the positions, which are far from the bottom 1/5, of the first aeration device and the second aeration device.
2. The device for efficiently treating the anaerobic fermentation substrate of the fruit and vegetable waste as claimed in claim 1, wherein: the first aeration device and the second aeration device are respectively provided with a sewage outlet and a biogas slurry outlet; and the distance between the biogas slurry outlet and the bottoms of the first aeration device and the second aeration device is one third of the height of the biogas slurry outlet, and the sewage outlet is arranged at the bottom.
3. The device for efficiently treating the anaerobic fermentation substrate of the fruit and vegetable waste as claimed in claim 1, wherein: the upper parts of the first aeration device and the second aeration device are provided with movable insect-proof nets; the mesh number of the movable insect-proof net is 40-80 meshes; the two ends of the insect-proof net are respectively connected with a fixing rod, the fixing rod at one end of the insect-proof net is fixed on each of the first aeration device and the second aeration device, the fixing rod at the other end of the insect-proof net is connected with a traction wire, and bearing wheel devices used for connecting the traction wire are respectively arranged at the two ends of each of the first aeration device and the second aeration device.
4. The device for efficiently treating the anaerobic fermentation substrate of the fruit and vegetable waste as claimed in claim 1, wherein: the membrane type microporous aerator is a disc type microporous aerator or a tubular type microporous aerator, a large number of self-closing holes are formed in a rubber membrane of the membrane type microporous aerator, and the self-closing holes can be automatically opened and closed along with the starting and closing of aeration.
5. The device for efficiently treating the anaerobic fermentation substrate of the fruit and vegetable wastes as claimed in claim 4, is characterized in that: the diameter of the tubular microporous aerator is 65mm, the length of each pipe is 50cm-100cm, and the installation interval of each row is 50cm-100 cm.
6. The device for efficiently treating the anaerobic fermentation substrate of the fruit and vegetable waste as claimed in claim 1, wherein: the bottom settling device comprises a settling tank bracket and a settling tank arranged on the settling tank bracket; the bottom of the settling tank is of a conical structure, a sediment discharge port is formed in the bottom of the conical settling tank, and a flange structure is connected to the sediment discharge port; the biogas slurry outlet is arranged at the lower part of the settling tank.
7. The device for efficiently treating the anaerobic fermentation substrate of the fruit and vegetable wastes as claimed in claim 6, which is characterized in that: the settling tank is made of polyethylene with certain transparency.
8. The device for efficiently treating the anaerobic fermentation substrate of the fruit and vegetable waste as claimed in claim 1, wherein: the solid-liquid separation device and the air compressor are respectively communicated with the corresponding first aeration device and the second aeration device through branch pipelines.
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Application publication date: 20200731 |