CN110903110A - Quick good oxygen system of becoming fertile of natural pond sediment - Google Patents
Quick good oxygen system of becoming fertile of natural pond sediment Download PDFInfo
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- CN110903110A CN110903110A CN201911168157.4A CN201911168157A CN110903110A CN 110903110 A CN110903110 A CN 110903110A CN 201911168157 A CN201911168157 A CN 201911168157A CN 110903110 A CN110903110 A CN 110903110A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/02—Apparatus for the manufacture
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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
- 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
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Abstract
The invention relates to a quick aerobic fertilizer forming system for biogas residues, which comprises a biogas slurry buffer tank, a biogas slurry conveying pump, an automatic medicine soaking machine, a conveying pump, a spiral-stacking dehydrator, a conveyor, an aerobic fermentation main machine, a first conveying mechanism, a storage bin, a second conveying mechanism, a crusher, a third conveying mechanism, a stirrer, a fourth conveying mechanism and an automatic packaging machine which are sequentially arranged. The quick aerobic fertilizer forming system for the biogas residues forms a whole set of process flow from treatment to packaging of the quick aerobic fertilizer forming of the biogas residues, realizes automatic fertilizer preparation, has high fertilizer preparation efficiency, and solves the defects of the traditional fertilizer preparation process.
Description
Technical Field
The invention belongs to the technical field of fertilizer preparation by using biogas residues, and particularly relates to a quick aerobic fertilizer forming system by using biogas residues.
Background
The biogas residues generated after the anaerobic fermentation of the organic matters are rich in nitrogen, phosphorus, potassium and a large amount of elements, and also contain trace elements such as boron, copper, iron, manganese, zinc and the like which play an important role in the growth of crops, so that the biogas residues are a very good organic fertilizer, meanwhile, the biogas residues are rich in organic matters, humus, trace nutrient elements, a plurality of amino acids, enzymes and beneficial microorganisms, are loose in texture, good in soil moisture preservation performance and moderate in pH value, and can play a good role in improving soil. Can be used as base fertilizer and additional fertilizer, which can reduce the application amount of fertilizer and pesticide, reduce the cost and effectively improve the yield and quality of crops.
The biogas residue can be used as a base fertilizer for crop production or nursery stock production, and can also be used for producing edible fungi, fish culture, earthworm culture and the like. However, the biogas residues can not be applied immediately after leaving the pond because the biogas fertilizer has strong reducibility, if the biogas fertilizer just leaving the pond is applied immediately, the biogas fertilizer can compete with crops for oxygen in soil, and the germination of seeds and the development of root systems are influenced, so that the leaves of the crops are yellow and withered. Therefore, after the biogas manure is taken out of the pond, the biogas manure is subjected to aerobic composting for 5-7 days and then applied.
As shown in fig. 6, the conventional fertilizer production process mainly includes: pretreatment, main fermentation, after treatment and storage.
Pretreating biogas residues: comprising the control of water content and the adjustment of carbon-nitrogen ratio; firstly, controlling the water content of the biogas residues, feeding hot air to the biogas residues through a blower, and carrying out ventilation aeration, or adding a certain amount of auxiliary materials to control the water content, so that the water content of the biogas residues is controlled to be about 60%.
Fermentation stage of raw materials: the primary fermentation mode is mostly adopted in China, the period is as long as 30 days, and the secondary fermentation mode is adopted at present, and the period is generally 20 days. The primary fermentation is a microbial metabolism process of the aerobic composting in the medium-temperature and high-temperature stages, and particularly the whole process of starting fermentation, going through the medium-temperature and high-temperature stages and then reaching the temperature and starting to decrease generally needs 10-12 days, and the high-temperature stage lasts for a long time. The secondary fermentation means that after the material is subjected to primary fermentation, a part of easily decomposed and large amount of difficultly decomposed organic matters exist, and the material needs to be sent to a post-fermentation chamber and piled into a stack with the height of 1-2 meters for secondary fermentation and decomposition. When the temperature is stabilized at about 40 ℃, the decomposition can be achieved, and generally 20 to 30 days are needed.
And (3) post-treatment stage: the method is characterized in that fermented and cured compost is treated, impurities which are not removed in the pretreatment process of the compost are further removed, a necessary crushing process is carried out, and the water content of the refined compost obtained after treatment is about 30%, and the carbon-nitrogen ratio is 15-20.
And (3) storage stage: the storage means that the compost must be stocked and managed before being treated, and the compost can be generally directly stored or stored in bags. However, during storage, care should be taken to keep the air dry and prevent the air from being blocked and damp.
Aerobic composting is a process in which aerobic bacteria absorb, oxidize and decompose waste under good aeration conditions and sufficient oxygen. Aerobic microbe oxidizes partial absorbed organic matter into simple inorganic matter and releases energy for microbe to grow while the other part of organic matter is synthesized into new cytoplasm to grow and reproduce microbe and produce more biomass
From the above, it is understood that aerobic composting must have the following conditions: 1) sufficient oxygen; 2) the appropriate temperature.
However, in the actual operation process, the following disadvantages are included:
(1) the stacked materials are easy to have insufficient oxygen supply due to untimely stack turning, and the bottom materials are lack of oxygen to cause the phenomenon of rotting;
(2) temperature control is difficult to guarantee, and no accurate means is provided for controlling the fermentation temperature;
(3) the composting time is long, and the composting is finished in 20-30 days generally.
(4) The occupied area is large.
Disclosure of Invention
Based on the defects in the prior art, the invention provides a quick aerobic fertilizing system for biogas residues.
In order to achieve the purpose, the invention adopts the following technical scheme:
a quick aerobic fertilizer forming system for biogas residues comprises a biogas slurry buffer tank, a biogas slurry conveying pump, an automatic medicine soaking machine, a conveying pump, a spiral-stacked dehydrator, a conveyor, an aerobic fermentation main machine, a first conveying mechanism, a storage bin, a second conveying mechanism, a pulverizer, a third conveying mechanism, a stirrer, a fourth conveying mechanism and an automatic packaging machine which are sequentially arranged, wherein biogas slurry in the biogas slurry buffer tank is conveyed to the automatic medicine soaking machine through the biogas slurry conveying pump, a flocculating agent is added into the automatic medicine soaking machine to coagulate the biogas slurry into alum blossom, the conveying pump conveys the alum blossom to the spiral-stacked dehydrator, the spiral-stacked dehydrator is dehydrated to obtain biogas residues, the conveyor conveys the biogas residues to the aerobic fermentation main machine, the aerobic fermentation main machine discharges the biogas residues and conveys the biogas residues to the storage bin through the first conveying mechanism, the storage bin automatically and uniformly discharges the biogas slurry to the second conveying mechanism and conveys the biogas flowers to the pulverizer to be crushed, the crushed biogas residues are conveyed to the stirrer through the third conveying mechanism to be mixed with other, and the fertilizer is conveyed to the automatic packaging machine through the fourth conveying mechanism, and the automatic packaging machine packages the fertilizer.
Preferably, the aerobic fermentation main machines are arranged in sequence along the conveying direction of the first conveying mechanism.
As a preferred scheme, a material distributor is arranged between the conveyor and the aerobic fermentation main machines and is used for distributing the biogas residue amount entering each aerobic fermentation main machine.
Preferably, the conveyor is a screw feeder.
As a preferred scheme, the aerobic fermentation host comprises a biochemical fermentation bin and a stirring paddle arranged in the biochemical fermentation bin, and the biochemical fermentation bin is provided with a feeding hole, a discharging hole and a waste gas discharging hole.
As a preferred scheme, the aerobic fermentation host machine further comprises a temperature control subsystem, a ventilation oxygen supply subsystem and a waste heat recycling subsystem which are arranged in the biochemical fermentation bin, wherein the temperature control subsystem is used for controlling the fermentation temperature in the biochemical fermentation bin to be 55-65 ℃, the ventilation oxygen supply subsystem is used for carrying out ventilation oxygen supply on the biochemical fermentation bin, and the waste heat recycling subsystem is used for recycling waste gas and waste heat discharged from a waste gas discharge port of the biochemical fermentation bin.
As a preferred scheme, the ventilation oxygen supply subsystem and the waste heat recycling subsystem are of an integrated structure and comprise a heat exchanger, a waste gas induced draft fan and a refrigerant induced draft fan, wherein the heat exchanger is provided with a refrigerant inlet, a waste gas inlet, a refrigerant outlet and a waste gas outlet, the refrigerant inlet and the waste gas outlet are respectively communicated with the outside, the waste gas inlet is communicated with a waste gas outlet of the biochemical fermentation bin, and the refrigerant outlet is communicated with an air inlet of the biochemical fermentation bin; after the waste gas discharged by the biochemical fermentation chamber driven by the waste gas draught fan and the external air driven by the refrigerant draught fan are subjected to heat exchange in the heat exchanger, the waste gas is discharged from a waste gas outlet of the heat exchanger, and the external air enters the biochemical fermentation chamber from a refrigerant outlet.
Preferably, the aerobic fermentation main machine is also provided with a human-computer interaction subsystem.
Preferably, the first conveying mechanism, the second conveying mechanism, the third conveying mechanism and the fourth conveying mechanism are all belt conveyors.
As a preferred scheme, a submersible stirrer is arranged in the biogas slurry buffer pool.
Compared with the prior art, the invention has the beneficial effects that:
the quick aerobic fertilizer forming system for the biogas residues forms a whole set of process flow from treatment to packaging of the quick aerobic fertilizer forming of the biogas residues, realizes automatic fertilizer preparation, has high fertilizer preparation efficiency, and solves the defects of the traditional fertilizer preparation process.
Drawings
FIG. 1 is a schematic structural diagram of a rapid aerobic biogas residue fertilizing system according to an embodiment of the invention;
FIG. 2 is a schematic view of a partial structure of an aerobic fermentation main unit according to an embodiment of the present invention;
FIG. 3 is another partial schematic structural view of an aerobic fermentation main unit according to an embodiment of the present invention;
FIG. 4 is a schematic view of an integrated structure of a ventilation and oxygen supply subsystem and a waste heat recycling subsystem according to an embodiment of the present invention;
FIG. 5 is a flow chart of a rapid aerobic composting process of biogas residue according to the embodiment of the invention;
fig. 6 is a flow chart of a conventional composting process of the prior art.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain the embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
As shown in fig. 1 to 5, the biogas residue fast aerobic fertilizer forming system according to the embodiment of the present invention includes a biogas slurry buffer tank 1, a biogas slurry delivery pump 2, an automatic medicine soaking machine 4, a delivery pump, a spiral-stacking dehydrator 5, a conveyor 6, a material distributor 7, a plurality of aerobic fermentation hosts 8, a first delivery mechanism 9, a bunker 10, a second delivery mechanism 11, a pulverizer 12, a third delivery mechanism 13, a mixer 14, a fourth delivery mechanism 15, and an automatic packaging machine 16, which are sequentially arranged. The biogas slurry in the biogas slurry buffer tank 1 is conveyed to an automatic medicine soaking machine 4 through a biogas slurry conveying pump 2, a flocculating agent is added into the automatic medicine soaking machine 4 to coagulate the biogas slurry into alum flocs, the alum flocs are conveyed to a spiral-wound dehydrator 5 through the conveying pump, biogas residues are obtained through dehydration of the spiral-wound dehydrator 5, the biogas residues are conveyed to a material distributor 7 through a conveyor 6, the material quantity entering each aerobic fermentation host machine 8 is automatically controlled through the material distributor 7 according to a preset program, the aerobic fermentation host machine 8 discharges materials and conveys the materials to a storage bin 10 through a first conveying mechanism 9, the storage bin 10 automatically and uniformly discharges the materials to a second conveying mechanism 11 and conveys the materials to a crusher 12 for crushing, the crushed materials are conveyed to a stirrer 14 through a third conveying mechanism 13 to be mixed and stirred with other ingredients to prepare fertilizer, the fertilizer is conveyed to an automatic packaging machine 16 through a fourth conveying mechanism 15, and the automatic packaging machine 16 packages the fertilizer.
Specifically, as shown in fig. 5, the biogas slurry generated by the anaerobic system is stored in a biogas slurry buffer tank 1, a submersible mixer 3 is installed in the biogas slurry buffer tank 1, the submersible mixer 3 is used for mixing the biogas slurry, so that the biogas residue is prevented from settling at the bottom of the tank, and the solid content of the biogas slurry is approximately about 3-4%.
The biogas slurry is conveyed to an automatic medicine soaking machine 4 by a biogas slurry conveying pump 2, two medicaments of flocculating agents PAC and PAM are added into the automatic medicine soaking machine 4, automatic stirring is carried out, the biogas slurry is fully condensed into alum floc under the action of the flocculating agents, then the alum floc is conveyed to a spiral-folding dehydrator 5 by the conveying pump, the alum floc is concentrated by gravity in a concentration part of the spiral-folding dehydrator 5, a large amount of filtrate is discharged from gaps of the concentration part, the filtrate is conveyed back to a raw water tank or an adjusting tank, the concentrated biogas residue is continuously pushed forward along the direction selected by a spiral shaft, the biogas residue is fully dehydrated under the internal pressure effect formed by a back pressure plate, and the dehydrated biogas residue cake is discharged from gaps formed by the back pressure plate and a spiral main body. Wherein, the biogas residue treatment capacity and the water content of the mud cake can be adjusted by adjusting the rotating speed of the spiral shaft and the gap of the back pressure plate. The water content of the biogas residues dehydrated by the spiral-overlapping dehydrator 5 is about 75-80%.
Fold spiral shell hydroextractor as a novel sludge dewatering technique, mainly utilize the screw axis to combine with moving, quiet ring piece, form a brand-new filter-pressing mode, replace the filter cloth of traditional hydroextractor, the dehydration main part adopts the screw extrusion principle, through the powerful extrusion force that screw rod diameter and pitch change produced to and the small gap between loose ring and the solid fixed ring, realize carrying out extrusion dehydration to the natural pond sediment, be a neotype solid-liquid separation technology, replaced traditional filtration modes such as traditional sheet frame, centrifugal dehydrator.
The biogas residues dehydrated by the spiral-stacked dehydrator are sent to a material distributor 7 through a conveyor 6, and the material distributor 7 automatically controls the amount of materials entering each aerobic fermentation main machine 8 according to a preset program. Wherein, the conveyor 6 is a screw feeder.
After the materials enter the aerobic fermentation host machine 8, the aerobic fermentation host machine adopts a high-temperature aerobic microbial agent treatment technology, provides a good living environment for the microbial agent through an automatic temperature control system and a ventilation oxygen supply system, and uniformly stirs the materials to fully contact with oxygen. The bacteria can always maintain vigorous fertility by utilizing rich nutrients needed by bacteria such as high protein in the perishable garbage, and can respectively produce protease, amylase, chitinase, cellulase, oxidase, hydrolase and the like, so that macromolecular substances (main components of organic pollutants) can be decomposed into micro-substancesBiologically utilized low molecular weight substances. When the microorganisms take up these low molecular substances, they are converted into CO2、H2O and a small amount of NH3(and release energy). Treated by an odor treatment system and then discharged in the form of gas and water vapor. After the perishable organic matters are rapidly fermented, only 10% of nontoxic and harmless organic fertilizer base materials are left. The treatment time of the whole process is within 24-48 hours, the decrement rate is more than 90%, and other organic matters and nutrient solution are not required to be added. Therefore, compared with the traditional aerobic fermentation mode, the mechanical aerobic quick fertilizer forming system greatly shortens the production time and greatly improves the production efficiency.
The mechanical fast aerobic fermentation main machine 8 is an integrated aerobic fermentation device, integrates stirring, oxygen supply and constant temperature control, and realizes fast aerobic fermentation of organic materials by automatic control. The aerobic fermentation host machine is provided with an automatic temperature control system, a ventilation oxygen supply system, a waste heat recycling system and an automatic stirring system. The temperature automatic control system automatically controls the temperature of the materials to meet the requirement that the materials are in the optimal temperature range required by fermentation; the ventilation and oxygen supply system provides sufficient oxygen for material fermentation; the stirring system ensures that the materials are fully oxygenated and the temperature of the materials is uniform; the waste heat recycling system recycles the heat of the high-temperature gas discharged by the fermentation main machine, so that the energy consumption of the system is reduced. Specifically, as shown in fig. 2 and 3, the mechanical fast aerobic fermentation host 8 includes a biochemical fermentation chamber 26 and a stirring paddle installed in the biochemical fermentation chamber, the stirring paddle includes a stirring shaft 18 and stirring blades 19, the stirring shaft 18 mainly stirs the material entering the biochemical fermentation chamber at a constant speed, the stirring speed is 6 revolutions per minute, and the material is guaranteed to be heated and oxygenated uniformly; the two adjacent stirring blades 19 are in seamless butt joint, so that all materials are uniformly heated and are subjected to oxygen, and no dead angle is left.
The biochemical fermentation bin is provided with a feeding hole 24, a discharging hole 25 and a waste gas discharging hole 20. Wherein, biochemical fermentation storehouse 26 adopts 304 stainless steel to make, and corrosion resistance is strong, long service life. Mainly used as a fermentation bed of organic materials, adopts a closed structure and good heat preservation measures to ensure that heat in a fermentation bin is not easy to lose. The feeding port 24 is automatically opened when feeding is needed, the feeding port is automatically closed after feeding is completed, and the feeding port door is sealed by the high-temperature-resistant fluororubber sealing strip, so that a good sealing effect is guaranteed. The discharge port 25 is automatically opened when discharging is needed, and is automatically closed after discharging is finished without manual intervention; the feed inlet door adopts high temperature resistant fluororubber sealing strip to seal, guarantees good sealed effect.
The aerobic fermentation host machine also comprises a temperature control subsystem 22, a ventilation oxygen supply subsystem 23 and a waste heat recycling subsystem which are arranged in the biochemical fermentation cabin, the temperature control subsystem accurately controls the material temperature, the material fermentation temperature is controlled between 55 ℃ and 65 ℃, and the heating system only plays a role of auxiliary heating because the microbial strains can generate heat during the fermentation and propagation.
The ventilation and oxygen supply subsystem is used for supplying ventilation and oxygen to the biochemical fermentation chamber, and the waste heat recycling subsystem is used for recycling waste gas and waste heat discharged from a waste gas discharge port of the biochemical fermentation chamber. As shown in fig. 4, the ventilation and oxygen supply subsystem and the waste heat recycling subsystem are of an integrated structure and comprise a heat exchanger 21, a waste gas induced draft fan a and a refrigerant induced draft fan b, the heat exchanger is provided with a refrigerant inlet 21a, a waste gas inlet 21b, a refrigerant outlet 21c, a waste gas outlet 21d and a condensate water outlet 21e, the refrigerant inlet 21a and the waste gas outlet 21d are respectively communicated with the outside, an air filter e is installed at the inlet end of the refrigerant inlet 21a, the waste gas inlet 21b is communicated with the waste gas outlet 20 of the biochemical fermentation bin, and the refrigerant outlet 21c is communicated with the air inlet 26a of the biochemical fermentation bin; after the waste gas discharged by the biochemical fermentation chamber driven by the waste gas draught fan a and the external air driven by the refrigerant draught fan b are subjected to heat exchange in the heat exchanger 21, the waste gas is discharged from a waste gas outlet 21d of the heat exchanger, and the external air enters the biochemical fermentation chamber 26 from a refrigerant outlet 21 c; the condensed water outlet 21e is used for draining condensed water; a temperature detection sensor c is arranged between the refrigerant induced draft fan b and the air inlet 26a of the biochemical fermentation bin and is used for detecting the temperature of air; and a dust filter d is arranged between the waste gas outlet 20 of the biochemical fermentation chamber and the waste gas draught fan a. Because the temperature of the waste gas discharged by the aerobic fermentation main machine 8 is above 80 ℃, if the heat energy of the waste gas can be recycled, the energy consumption of the whole machine is lower. The heat exchanger 21 can exchange heat between heat energy in the waste gas and normal temperature air, increase the air inlet temperature of the biochemical fermentation chamber and send the air into the aerobic fermentation main machine, so that the air inlet temperature is increased, and the energy consumption of the whole machine is lower.
In addition, the aerobic fermentation host is also provided with a human-computer interaction subsystem to realize human-computer interaction, and the configuration of the specific human-computer interaction subsystem can refer to the prior art and is not described herein.
The number of fermentation hosts 8 is determined according to the scale of the throughput, which is 4 tons per fermentation host. The fertilizer matrix after each fermentation is accomplished passes through automatic discharging device, falls into first conveying mechanism 9 automatically, and first conveying mechanism 9 is band conveyer, sends into feed bin 10 through the belt is automatic, and feed bin 10 has automatic even ejection of compact function.
The material discharged from the bin 10 is sent to a crusher 12 through a second conveying mechanism 11 for crushing, and the granularity of the material is further controlled below 5 mm. Wherein the second conveying mechanism 11 is a belt conveyor.
The crushed materials are sent into a stirrer 14 through a third conveying mechanism 13, other ingredients (such as perlite, vermiculite, plant ash, poultry excrement and the like) are added into the stirrer 14, the materials can be prepared into substrates with different functions, and the substrates are uniformly stirred and then conveyed to an automatic packaging machine 16 through a fourth conveying mechanism 15 for metering, packaging and bagging for sale. Wherein, the third conveying mechanism 11 and the fourth conveying mechanism 15 are both belt conveyors.
The foregoing has outlined rather broadly the preferred embodiments and principles of the present invention and it will be appreciated that those skilled in the art may devise variations of the present invention that are within the spirit and scope of the appended claims.
Claims (10)
1. A quick aerobic fertilizer forming system for biogas residues is characterized by comprising a biogas slurry buffer tank, a biogas slurry conveying pump, an automatic medicine soaking machine, a conveying pump, a spiral overlaying dehydrator, a conveyor, an aerobic fermentation main machine, a first conveying mechanism, a storage bin, a second conveying mechanism, a crusher, a third conveying mechanism, a stirrer, a fourth conveying mechanism and an automatic packaging machine which are sequentially arranged, wherein biogas slurry in the biogas slurry buffer tank is conveyed to the automatic medicine soaking machine through the biogas slurry conveying pump, a flocculating agent is added into the automatic medicine soaking machine to coagulate the biogas slurry into alum blossom, the conveying pump conveys the alum blossom to the spiral overlaying dehydrator, the spiral overlaying dehydrator is dehydrated to obtain biogas residues, the conveyor conveys the biogas residues to the aerobic fermentation main machine, the aerobic fermentation main machine discharges the biogas residues and conveys the biogas residues to the storage bin through the first conveying mechanism, the storage bin automatically and uniformly discharges the biogas residues to the second conveying mechanism and conveys the biogas flowers to the crusher to be crushed, the crushed materials are conveyed to the stirrer through the third conveying mechanism to be mixed with other ingredients and stirred to form, and the fertilizer is conveyed to the automatic packaging machine through the fourth conveying mechanism, and the automatic packaging machine packages the fertilizer.
2. The quick aerobic biogas residue fertilizing system as claimed in claim 1, wherein the aerobic fermentation hosts are arranged in sequence along the conveying direction of the first conveying mechanism.
3. The system for fast aerobic fertilization of biogas residues according to claim 2, wherein a material distributor is arranged between the conveyor and the aerobic fermentation main machines, and the material distributor is used for distributing the biogas residue amount entering each aerobic fermentation main machine.
4. The biogas residue fast aerobic fertilizer forming system according to claim 3, wherein the conveyor is a screw feeder.
5. The system of claim 1, wherein the aerobic fermentation main unit comprises a biochemical fermentation chamber and a stirring paddle installed in the biochemical fermentation chamber, and the biochemical fermentation chamber has a feed inlet, a discharge outlet and a waste gas discharge outlet.
6. The system of claim 5, wherein the aerobic fermentation host further comprises a temperature control subsystem, a ventilation and oxygen supply subsystem and a waste heat recycling subsystem, the temperature control subsystem, the ventilation and oxygen supply subsystem and the waste heat recycling subsystem are arranged in the biochemical fermentation chamber, the temperature control subsystem is used for controlling the fermentation temperature in the biochemical fermentation chamber to be 55-65 ℃, the ventilation and oxygen supply subsystem is used for ventilating and supplying oxygen in the biochemical fermentation chamber, and the waste heat recycling subsystem is used for recycling waste heat of waste gas discharged from a waste gas discharge port of the biochemical fermentation chamber.
7. The biogas residue fast aerobic fertilizer forming system according to claim 6, wherein the ventilation and oxygen supply subsystem and the waste heat recycling subsystem are of an integrated structure and comprise a heat exchanger, a waste gas draught fan and a refrigerant draught fan, the heat exchanger is provided with a refrigerant inlet, a waste gas inlet, a refrigerant outlet and a waste gas outlet, the refrigerant inlet and the waste gas outlet are respectively communicated with the outside, the waste gas inlet is communicated with the waste gas outlet of the biochemical fermentation bin, and the refrigerant outlet is communicated with the air inlet of the biochemical fermentation bin; after the waste gas discharged by the biochemical fermentation chamber driven by the waste gas draught fan and the external air driven by the refrigerant draught fan are subjected to heat exchange in the heat exchanger, the waste gas is discharged from a waste gas outlet of the heat exchanger, and the external air enters the biochemical fermentation chamber from a refrigerant outlet.
8. The system for rapid aerobic composting of biogas residue according to claim 5, wherein the aerobic fermentation host is further equipped with a human-computer interaction subsystem.
9. The fast aerobic biogas residue fertilizing system as claimed in claim 1, wherein the first conveying mechanism, the second conveying mechanism, the third conveying mechanism and the fourth conveying mechanism are all belt conveyors.
10. The system for quickly aerobic fertilization of biogas residues according to claim 1, wherein a submersible mixer is installed in the biogas slurry buffer tank.
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