CN111333440B - Vehicle-mounted organic garbage rapid decomposition and fertilization system and method - Google Patents
Vehicle-mounted organic garbage rapid decomposition and fertilization system and method Download PDFInfo
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- CN111333440B CN111333440B CN202010164722.6A CN202010164722A CN111333440B CN 111333440 B CN111333440 B CN 111333440B CN 202010164722 A CN202010164722 A CN 202010164722A CN 111333440 B CN111333440 B CN 111333440B
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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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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F3/00—Fertilisers from human or animal excrements, e.g. manure
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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
- C05F9/04—Biological compost
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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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- 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
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Abstract
The invention discloses a vehicle-mounted system for quickly decomposing and fertilizing organic garbage, which comprises a vehicle body and a container shell, wherein the container shell is arranged on the vehicle body; a feeding unit, a pretreatment unit, an aerobic fermentation unit, a deodorization unit and a leachate treatment unit are arranged in the container shell; the device also comprises an integrated automatic control unit, wherein the integrated automatic control unit is used for controlling and monitoring the feeding unit, the pretreatment unit, the aerobic fermentation unit, the deodorization unit and the leachate treatment unit. And discloses a method for treating organic garbage by using the vehicle-mounted organic garbage rapid decomposition and fertilization system. The invention is suitable for the treatment of dispersed garbage, can fertilize and utilize organic garbage on site, and can realize the effective treatment of garbage leachate and odor emission.
Description
Technical Field
The invention relates to the technical field of garbage treatment, in particular to a vehicle-mounted system and a method for quickly decomposing and fertilizing organic garbage.
Background
The village and town garbage is wide in distribution, small in scale, complex in components, and relatively high in linkage of dispersion and centralized treatment, and cannot be effectively recycled; at present, the treatment is mainly carried out by simple landfill and open burning. However, the landfill treatment occupies a large amount of land, leachate generated by organic garbage can cause damage to the soil, and the polluted soil can pollute crops and further influence the health of people. Although the open-air incineration treatment has small occupied area and good volume reduction effect, a large amount of waste gas and waste residues are generated in the incineration process, and particularly dioxin gas with extremely strong toxicity is generated to cause secondary pollution. The conventional rural garbage decomposition and composting technology has the advantages that the composting fermentation period is long, the organic matter content in the indexes of the fertilizer is low, the effective viable count is low, and the indexes of fecal escherichia coli, total arsenic, total chromium, total cadmium, total mercury and the like are high; the leachate treatment effect and the odor treatment effect are poor, and secondary pollution exists.
Therefore, the technical staff in the field needs to solve the problem of how to provide a mobile fast decomposition technology for garbage in which single-point dispersion treatment and large-scale treatment are linked, shorten the fermentation period, improve the contents of organic matters, active bacteria and the like in the fertilizer, and improve the treatment effect of leachate and malodor.
Disclosure of Invention
In view of the above, the invention provides a vehicle-mounted system and a method for rapidly decomposing and fertilizing organic garbage, which are suitable for treating dispersed garbage, fertilizing and recycling the organic garbage on site, shortening the fermentation period, improving the organic matter content and the effective viable count index in the fertilizer index, reducing the contents of fecal escherichia coli, total arsenic, total chromium, total cadmium and total mercury in the fertilizer, and realizing effective treatment on garbage leachate and odor emission.
In order to achieve the purpose, the invention adopts the following technical scheme:
a vehicle-mounted organic garbage rapid decomposition and composting system comprises a vehicle body and a container shell, wherein the container shell is arranged on the vehicle body;
a feeding unit, a pretreatment unit, an aerobic fermentation unit, a deodorization unit and a leachate treatment unit are arranged in the container shell;
the feeding unit is used for feeding garbage into the pretreatment unit;
the pretreatment unit is used for sorting, crushing, adjusting humidity, mixing and stirring auxiliary materials and decomposed compost for treatment, and putting organic materials obtained after treatment into the aerobic fermentation unit;
the aerobic fermentation unit utilizes the compound bacterial liquid to ferment the organic materials;
the deodorization unit is connected with the aerobic fermentation unit and is used for purifying odor generated by garbage fermentation in the aerobic fermentation unit;
the leachate treatment unit is connected with the aerobic fermentation unit and is used for purifying leachate generated by garbage fermentation in the aerobic fermentation unit;
the integrated automatic control unit is used for controlling and monitoring the feeding unit, the pretreatment unit, the aerobic fermentation unit, the deodorization unit and the leachate treatment unit.
According to the invention, each processing unit is arranged in the container shell, the whole system is high in integration level, is closed and environment-friendly, and is transported by a vehicle body, flexible, convenient, rapid and efficient.
Preferably, the device further comprises a material storage unit; since the total amount of garbage generated in each region is different, and the pretreatment unit has limited processing capacity in unit time, the storage unit can be arranged to temporarily store the garbage so as to process the garbage at any time in the moving process.
Preferably, a conveying device or a gripping device for feeding can be arranged in the feeding unit, and the garbage from the storage unit or the outside of the system can be conveyed to the pretreatment unit at any time.
Preferably, the pretreatment unit comprises a sorting device, a crushing device, a humidity adjusting device, a stirring device and a feeding device;
the sorting device comprises a sorting machine and a material recovery cabinet; the separator is provided with a magnetic separation mode and an air separation mode; the material recovery cabinet is used for recovering and temporarily storing light objects such as metal, plastic and the like sorted by the sorting machine;
the crushing device is arranged at the downstream of the sorting machine;
the humidity adjusting device is arranged at the downstream of the crushing device, adjusts the humidity through the humidifier and the dehumidifier and is provided with a humidity sensor;
the stirring device is arranged at the downstream of the humidity adjusting device and is used for uniformly mixing the materials subjected to humidity adjustment with the auxiliary materials and the decomposed compost;
the feeding device is arranged at the downstream of the stirring device and is used for feeding the organic materials obtained after stirring treatment into the aerobic fermentation unit.
Preferably, the recovery material cabinet is provided with a cabinet door, so that the recovered metal, plastic and the like can be taken out conveniently and timely.
Preferably, the crushing device adopts a hammer crusher, and the crushing capacity is 25-50m3H (volume of material per unit time), crushed refuse particlesThe grain diameter is 20-30 mm.
Preferably, the water absorbing material adopted in the humidifier and the dehumidifier is water absorbing resin.
Preferably, the humidifier is a gasification type humidifier, and the air is humidified by ventilating the water absorbing material and performing gasification and evaporation by heat exchange between the contained water and the air flow.
Preferably, the stirring device adopts a small-sized full-automatic rotary drum type stirrer, a rotating shaft is arranged in the center of the interior of the rotary drum, and the rotating shaft is driven to rotate by a motor; the rotating shaft is provided with a stirring blade, and the stirring blade rotates 360 degrees along with the rotating shaft; the stirring blades are three sections of blades with embedded structures, and the embedded structures can extend into or out of the blades while rotating, so that three-dimensional high-speed three-dimensional stirring is realized.
Preferably, the feeding device can adopt a conveyor belt or a pipeline with a pumping pump.
Preferably, the auxiliary material storage tank and the decomposed compost storage tank are respectively communicated to the stirring device through a conveying belt or a pipeline with a material pumping pump.
Preferably, the aerobic fermentation unit comprises a fermentation bin and a composite bacterial liquid storage tank;
the fermentation chamber is provided with a fermentation chamber feeding port, a fermentation chamber discharging port, a ventilation system, a fermentation chamber exhaust port, a first liquid inlet system, a fermentation chamber liquid outlet, a stirring device, a temperature sensor, a humidity sensor and an oxygen concentration sensor;
the feeding port of the fermentation bin is connected with a feeding device;
the ventilation system is arranged at the bottom of the fermentation bin;
the air outlet of the fermentation bin is connected with the deodorization unit;
the first liquid inlet system is arranged at the top in the fermentation bin and is connected with the composite bacterial liquid storage tank;
the liquid outlet of the fermentation bin is connected with a leachate treatment unit;
the stirring device is arranged in the fermentation bin.
Preferably, the bottom and the periphery in the fermentation bin are paved with anti-corrosion and acid-alkali-resistant lining layers.
Preferably, the material of the inner liner layer is fiber reinforced plastics.
Preferably, a discharge pipe with the diameter of 50-80mm is arranged at the discharge port of the fermentation bin, and a mechanical discharge mode (such as pumping by a material pumping pump, conveying by a conveyor belt and the like) is adopted.
Preferably, the ventilation system includes a main ventilation duct, a branch ventilation duct, and a blower fan; the main ventilation pipe is arranged at the bottom in the fermentation bin; the ventilation branch pipes are distributed on the ventilation main pipe and are provided with ventilation openings; the air blower is arranged outside the fermentation bin and is connected with the ventilation main pipe;
the first liquid inlet system comprises a first liquid inlet pipe and a first atomizing spray head; the first liquid inlet pipe is arranged at the top in the fermentation bin and is connected with the composite bacteria liquid storage tank through a water pump; the first atomization nozzle is arranged on the first liquid inlet pipe;
the composite bacterial liquid storage tank is filled with composite bacterial liquid, and the adding amount proportion of trichoderma viride, bacillus subtilis, azotobacter chroococcum and bacillus megaterium in the composite bacterial liquid is 2: 1: 1: 1, concentration of each bacterium is 1.8X 107-2.5×107CFU/mL。
Preferably, the stirring device comprises a track and a chain transmission stirring device; the track is arranged on the inner wall of the fermentation bin and is 30cm higher than the organic materials put into the fermentation bin; the chain type stirring device comprises a hydraulic system, a gear assembly and a supporting plate assembly; the hydraulic system is erected on the track and comprises a rotation control component, a longitudinal lifting control component and a transverse movement control component; the gear assembly comprises a bracket and a plurality of gears, the gears are arranged on the bracket and are mutually transmitted, the bracket controls longitudinal and transverse movement through a longitudinal lifting control component and a transverse movement control component, and the gears control rotation through a rotation control component; the supporting plate group comprises a plurality of supporting plates connected into a chain ring, is coated on the periphery of the gear set and is driven to circularly roll by a gear; the splint is provided with a replaceable wear-resistant curved surface tooth blade. The stirring depth of the chain type stirring device is 1.0-1.2 m.
Preferably, a valve is arranged at the liquid outlet of the fermentation bin, and the valve is connected with the leachate treatment unit and a return pipe communicated with the fermentation bin through a pipeline with a flow dividing component, so that one part of leachate is recycled for fermentation, and the other part of leachate is discharged after harmless treatment.
Preferably, the aerobic fermentation unit further comprises a dry material storage tank, wherein dry materials such as crop straws and sawdust are filled in the dry material storage tank and can be conveyed to the fermentation bin through a conveying belt or a pipeline with a material pumping pump.
Preferably, the deodorization unit comprises a microbial liquid storage tank, a biological deodorization cell and an activated carbon adsorption cell;
the biological deodorization grid chamber is communicated with an exhaust port of the fermentation bin, and a second liquid inlet system and an odor sensor are installed in the biological deodorization grid chamber, wherein the second liquid inlet system comprises a second liquid inlet pipe and a second atomizing spray head; the second liquid inlet pipe is connected with a microbial liquid storage tank through a water pump; the second atomization nozzle is arranged on the second liquid inlet pipe;
the microbial liquid storage tank is filled with a microbial liquid which is a mixed bacterium of bacillus cereus, bacillus subtilis, lactobacillus plantarum and issatchenkia orientalis, and the ratio of the bacterial amount to the bacterial amount is 1: 1: 1: 1, the concentration of the microbial solution is 5.0 × 107-6.0×107CFU/mL；
The activated carbon adsorption cells are selectively communicated with the biological deodorization cells and provided with gas discharge ports;
the activated carbon adsorption cells are filled with shell activated carbon with particle size of 12-20 meshes and filling density of 0.4-0.5g/cm3。
Preferably, the odor sensor may be provided in plurality, and detects H separately2S、NH3And odor content of partially volatile organic compounds.
Preferably, the leachate treatment unit comprises a reinforced anaerobic hydrolysis reactor, a sequencing batch micro-bubble oxygenation device and a photocatalytic device which are sequentially connected;
the intensified anaerobic hydrolysis reactor is connected with a liquid outlet of the fermentation bin; the intensified anaerobic hydrolysis reactor is a conventional anaerobic hydrolysis reaction device, adopts a combined process of anaerobic activated sludge and an anaerobic biofilm method, and utilizes the biological metabolism of hydrolytic microorganisms to realize efficient hydrolytic acidification of leachate.
3 layers of fillers are paved from top to bottom in the sequencing batch type microbubble aerator, which are respectively as follows: pebbles, coal slag and ceramsite; transverse pipes are laid in each layer of the filler respectively, and the transverse pipes are provided with vent holes; the transverse pipes are communicated through the longitudinal pipes, and the longitudinal pipes are communicated with external air; the leachate flowing out of the self-reinforced anaerobic hydrolysis reactor flows through the sequencing batch micro-bubble oxygen increasing device from top to bottom and enters the photocatalytic device; the sequencing batch type micro-bubble oxygen increasing device adopts intermittent and instantaneous water inlet and periodic water outlet to promote external air to be sucked into the filler;
an ultraviolet lamp and a photocatalyst are arranged in the photocatalytic device, and the photocatalyst is nano titanium dioxide; the photocatalytic device is also provided with a leachate discharge port.
Preferably, the vent holes are positioned on the bottom surface of the transverse tube, and the perforation rate is 15%; the transverse pipe and the longitudinal pipe are made of PVC materials.
Preferably, an automatic feeding device and a pH detection device for the acid-base regulator are further arranged and are respectively used for adding the acid-base regulator in the photocatalytic device and detecting the pH.
Preferably, a photocatalyst automatic feeding device can be further arranged for adding the photocatalyst in the photocatalyst device.
Preferably, the integrated automatic control unit comprises a PLC control module, an online monitoring module and a man-machine interaction module;
the PLC control module is used for realizing the automatic control of the feeding unit, the pretreatment unit, the aerobic fermentation unit, the deodorization unit and the leachate treatment unit;
the online monitoring module is used for receiving monitoring information fed back by each unit in real time;
the man-machine interaction module is used for realizing information interaction between an operator and the system.
A vehicle-mounted method for quickly decomposing and fertilizing organic garbage comprises the following steps:
the vehicle-mounted organic garbage fast decomposition and composting system is used for treating garbage, and after the garbage is put into the feeding unit, the garbage is subjected to sorting, crushing, humidity adjustment, mixing and stirring treatment of auxiliary materials and decomposed compost by the pretreatment unit; the organic material obtained after the treatment enters an aerobic fermentation unit for aerobic fermentation; and (3) fermenting the garbage in the aerobic fermentation unit to obtain a fertilizer, treating odor generated in the fermentation process by the deodorization unit and then discharging the odor into the atmosphere, recycling a part of generated leachate, and treating a part of the leachate by the leachate treatment unit and then discharging the part of the leachate.
Preferably, the above method comprises the steps of:
s1, feeding:
starting an integrated automatic control unit, and putting the garbage into a feeding unit;
s2, pretreatment:
the method comprises the following steps of (1) enabling garbage to enter a pretreatment unit from a feeding unit, sorting out metal and light substances, crushing organic garbage into particles, adjusting the water content to be 40-60%, adding auxiliary materials, controlling the carbon-nitrogen ratio to be 20-30, inoculating decomposed compost, and uniformly stirring to obtain organic materials which are sent into an aerobic fermentation unit; the auxiliary materials comprise agricultural straws, toilet-changing excrement and/or livestock and poultry breeding excrement;
s3, aerobic fermentation:
inoculating the organic material with the compound bacterial liquid, wherein the inoculation amount is 3-6 per mill; turning the pile once every 2d, wherein the fermentation period is 8-10 d;
s4, odor treatment:
introducing odor generated by aerobic fermentation into a deodorization unit, treating by using microbial liquid and adsorbing by using activated carbon, and then discharging into the atmosphere;
s5, leachate treatment:
the leachate which is not recycled is discharged after the enhanced anaerobic hydrolysis, the sequencing batch micro-bubble oxygenation and the photocatalysis.
Preferably, the composts fermented by the system can be used as the decomposed composts, and the addition amount is generally 5% of the total amount of organic materials fed into the aerobic fermentation unit.
Preferably, in the step S3, the aeration rate during fermentation is 0.4-0.6 L.min-1·kg-1An organic material.
The ventilation rate in the fermentation process can be adjusted according to the temperature, and the temperature in the initial fermentation stage and the later cooling stage can be lower than 45 ℃; and in the high-temperature stage in the middle stage of fermentation, the temperature is controlled to be 45-60 ℃, if the temperature is too high, the ventilation rate can be properly increased, the overturning times of the stirring device in unit time are increased, and if the temperature is too low, the ventilation rate can be properly reduced, and the overturning times of the stirring device in unit time are reduced.
Preferably, the water content of the pile is controlled to be 50-60% in the initial fermentation temperature rise stage and the middle fermentation high temperature stage, the water content can be improved by recycling leachate when the water content is too low, and the water content can be reduced by adding crop straws, sawdust and the like when the water content is too high.
Preferably, the oxygen concentration in the fermentation chamber is maintained at 16-20%, and can be controlled by adjusting the ventilation rate.
Preferably, in the step S4, the odor is treated by the microbial liquid to reduce to 20% of the original concentration, and then activated carbon adsorption is performed;
in the step S5, the leachate stays in the enhanced anaerobic hydrolysis reactor for 10 hours, stays in the sequencing batch type micro-bubble oxygen increasing device for 12 hours, and stays in the photocatalytic device for 2.5 hours;
adjusting the pH value of the leachate to 6 in the photocatalytic device; the amount of titanium dioxide used was 8g/L based on the leachate to be catalytically treated.
Compared with the prior art, the vehicle-mounted system and the method for quickly decomposing and fertilizing the organic garbage have the following advantages that:
aiming at organic garbage in villages and towns, composting equipment is organically combined with a container, so that low-cost waste utilization is realized; the system has high moving speed, can move along with short-term or mobile garbage generating sources to realize tracking treatment, can replace fixed decentralized treatment facilities, reduces equipment investment, can cover a very large area with extensive population by one set of equipment, and has the advantages of high equipment utilization rate, high automation degree, low treatment cost and no odor pollution. In addition, the organic garbage is subjected to on-site fertilizing and energy utilization, the fermentation period can be shortened, the organic matter content and the effective viable count index in the fertilizer index can be improved, the contents of fecal escherichia coli, total arsenic, total chromium, total cadmium and total mercury in the fertilizer can be reduced, the garbage compost product is used for agriculture and forestry production or a soil conditioner, the soil fertilizer efficiency and the organic matter content can be improved, and the organic garbage compost has remarkable economic benefits, environmental benefits and social benefits.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a vehicular organic waste rapid decomposition and fertilization system structure.
FIG. 2 is a schematic diagram of the structure of an aerobic fermentation unit according to the present invention.
FIG. 3 is a schematic view of the internal structure of the sequencing batch micro-bubble oxygen increasing device according to the present invention.
Reference numerals: 1. a vehicle body; 2. packaging the shell; 3. a storage unit; 31. a material inlet of the material storage unit; 4. a feeding unit; 5. a pre-processing unit; 51. a sorting device; 511. a sorting machine; 512. a material recovery cabinet; 52. a crushing device; 53. a humidity adjusting device; 54. a stirring device; 55. a feeding device; 6. an aerobic fermentation unit; 61. a fermentation bin; 611. a feeding opening of the fermentation bin; 612. a discharge hole of the fermentation bin; 6121. a discharge pipe; 613. a ventilation system; 6131. a ventilation main pipe; 6132. a ventilation branch pipe; 614. an exhaust port of the fermentation bin; 615. a first liquid inlet system; 6151. a first liquid inlet pipe; 6152. a first atomizer; 616. a liquid outlet of the fermentation bin; 617. a stirring device; 6171. a track; 6172. a chain-type transmission stirring device; 618. a temperature sensor; 619. a humidity sensor; 620. an oxygen concentration sensor; 62. a composite bacteria liquid storage tank; 7. a deodorizing unit; 71. a biological deodorization compartment; 72. activated carbon adsorption cells; 721. a gas discharge port; 8. a leachate treatment unit; 821. a pebble layer; 822. a coal cinder layer; 823. a ceramic layer; 824. a transverse tube; 825. a longitudinal tube; 831. a leachate discharge port; 9. and an integrated automatic control unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in the attached drawings 1-3, the vehicle-mounted organic garbage rapid decomposition and fertilization system comprises a vehicle body 1 and a container shell 2, wherein the container shell 2 is arranged on the vehicle body 1.
The container shell 2 is internally provided with a material storage unit 3, a material loading unit 4, a pretreatment unit 5, an aerobic fermentation unit 6, a deodorization unit 7 and a leachate treatment unit 8.
The outer wall of the material storage unit 3 is provided with a material storage unit feeding port 31, and the bottom of the material storage unit is communicated with the feeding unit 4 through a switchable partition board or a valve; a conveyor belt is arranged in the feeding unit 4, and a switchable partition plate or a valve is arranged at the bottom of the feeding unit 4.
The pretreatment unit 5 comprises a sorting device 51, a crushing device 52, a humidity adjusting device 53, a stirring device 54 and a feeding device 55 which are sequentially connected;
the sorting device 51 comprises a sorting machine 511 and a recovery material cabinet 512; the separator 511 is arranged at the bottom of the feeding unit 4, and the separator 511 is provided with a magnetic separation mode and an air separation mode; the recycling material cabinet 512 is located on one side of the sorting machine 511 and is used for temporarily storing light materials such as magnetically sorted metals and air sorted plastics, and the recycling material cabinet 512 is provided with a cabinet door.
The crushing device 52 is a hammer crusher, is arranged at the bottom of the separator 511, and has the crushing capacity of 25-50m3H, the particle size of the crushed garbage particles is 20-30 mm. A partition plate or a valve which can be opened and closed is arranged between the feeding port of the crushing device 52 and the discharging port of the sorting machine 511.
The humidity adjusting device 53 is arranged at the bottom of the crushing device 52, and a humidifier, a dehumidifier and a humidity sensor are arranged in the humidity adjusting device 53; the water absorbing material adopted in the humidifier and the dehumidifier is water absorbing resin. A baffle plate or a valve which can be opened and closed is arranged between the discharge port of the crushing device 52 and the feeding port of the humidity adjusting device 53.
The stirring device 54 is arranged at one side of the humidity adjusting device 53, and a conveying belt or a pipeline with a material pumping pump is arranged between a material inlet of the stirring device 54 and a material outlet of the humidity adjusting device 53; the stirring device 54 adopts a small-sized full-automatic rotary drum type stirrer, a rotating shaft is arranged in the center of the interior of the rotary drum, and the rotating shaft is driven to rotate by a motor; the rotating shaft is provided with a stirring blade, and the stirring blade rotates 360 degrees along with the rotating shaft; the stirring blades are three sections of blades with embedded structures, and the embedded structures can extend into or out of the blades while rotating, so that three-dimensional high-speed three-dimensional stirring is realized.
The pretreatment unit 5 further comprises an auxiliary material storage tank and a decomposed compost storage tank which are respectively communicated to the stirring device 54 through a conveying belt or a pipeline with a material pumping pump.
The aerobic fermentation unit 6 comprises a fermentation bin 61 and a composite bacterial liquid storage tank 62.
The fermentation chamber 61 is provided with a fermentation chamber feeding port 611, a fermentation chamber discharging port 612, a ventilation system 613, a fermentation chamber exhaust port 614, a first liquid inlet system 615, a fermentation chamber liquid outlet 616, a stirring device 617, a temperature sensor 618, a humidity sensor 619 and an oxygen concentration sensor 620.
The fermentation bin inlet 611 is located at one side of the fermentation bin 61, and the feeding device 55 (a conveyor belt or a pipeline with a material pumping pump) is installed between the fermentation bin inlet 611 and the outlet of the stirring device 54.
The discharge port 612 of the fermentation bin is positioned at the other side of the fermentation bin 61, and a discharge pipe 6121 with the diameter of 70mm is arranged at the discharge port 612 of the fermentation bin, and a mechanical discharge mode is adopted.
The ventilation system 613 includes a main ventilation pipe 6131, a branch ventilation pipe 6132 and a blower; the pipe diameter of the main ventilation pipe 6131 is 100mm, and the main ventilation pipe is arranged at the bottom in the fermentation bin 61; a plurality of the vent branch pipes 6132 with the pipe diameter of 50mm are communicated with the vent main pipe 6131 and are uniformly distributed, and vent holes with the diameter of 10mm are formed in the vent branch pipes 6132; the blower is installed outside the fermentation chamber 61 and connected to the main ventilation pipe 6131.
The fermentation chamber exhaust port 614 is located at the top of the fermentation chamber 61.
The first liquid inlet system 615 comprises a first liquid inlet pipe 6151 and a first atomizing nozzle 6152; the first liquid inlet pipe 6151 is arranged at the top in the fermentation bin 61 and is connected with the composite bacterial liquid storage tank 62 through a water pump; the number of the first atomizing nozzles 6152 is multiple, and the first atomizing nozzles are uniformly distributed on the first liquid inlet pipe 6151.
The composite bacteria liquid storage tank 62 is filled with composite bacteria liquid, and the adding amount ratio of trichoderma viride, bacillus subtilis, azotobacter chroococcum and bacillus megaterium in the composite bacteria liquid is 2: 1: 1: 1, concentration of each bacterium was 2X 107CFU/mL。
The fermentation chamber liquid outlet 616 is located on the side wall of the fermentation chamber 61 at a distance of 10cm from the bottom of the compost, and a valve is arranged at the fermentation chamber liquid outlet 616. The valve is connected with the leachate treatment unit 8 and a return pipe communicated with the fermentation bin 61 through pipelines with flow dividing parts, so that one part of leachate is recycled for fermentation, and the other part of leachate is discharged after harmless treatment.
The stirring device 617 comprises a track 6171 and a chain type transmission stirring device 6172; the rail 6171 is arranged on the inner wall of the fermentation bin 61 and is 30cm higher than the organic materials put into the fermentation bin 61; the chain type stirring device 6172 comprises a hydraulic system, a gear assembly and a supporting plate assembly; the hydraulic system is erected on the track 6171 and comprises a rotation control component, a longitudinal lifting control component and a transverse movement control component; the gear assembly comprises a bracket and a plurality of gears, the gears are arranged on the bracket and are mutually transmitted, the bracket controls longitudinal and transverse movement through a longitudinal lifting control component and a transverse movement control component, and the gears control rotation through a rotation control component; the supporting plate group comprises a plurality of supporting plates connected into a chain ring, is coated on the periphery of the gear set and is driven to circularly roll by a gear; the splint is provided with a replaceable wear-resistant curved surface tooth blade. The stirring depth of the chain type transmission stirring device 6172 is 1.0-1.2 m.
The temperature sensor 618 is installed at the bottom of the rail 6171 and is inserted into the organic material put into the fermentation bin 61.
And anti-corrosion and acid-alkali-resistant inner liners are paved at the bottom and around the fermentation bin 61, and the inner liners are made of fiber reinforced plastics.
The aerobic fermentation unit 6 further comprises a dry material storage tank, wherein dry materials such as crop straws and sawdust are contained in the dry material storage tank and can be conveyed to the fermentation bin 61 through a conveying belt or a pipeline with a material pumping pump.
The deodorization unit 7 includes a microbial liquid storage tank, a biological deodorization cell 71, and an activated carbon adsorption cell 72.
The biological deodorization lattice chamber 71 is arranged at the top of the fermentation bin 61, an air inlet of the biological deodorization lattice chamber 71 is communicated with an air outlet 614 of the fermentation bin, a second liquid inlet system and an odor sensor are arranged in the biological deodorization lattice chamber 71, and the second liquid inlet system comprises a second liquid inlet pipe and a second atomization nozzle; the second liquid inlet pipe is connected with a microbial liquid storage tank through a water pump; the second atomization nozzle is arranged on the second liquid inlet pipe;
the microbial liquid storage tank is filled with a microbial liquid, and the ratio of bacillus cereus, bacillus subtilis, lactobacillus plantarum and issatchenkia orientalis bacteria in the microbial liquid is 1: 1: 1: 1, the concentration of the bacterial liquid is 5.5X 107CFU/mL。
The activated carbon adsorption cell 72 is communicated with the biological deodorization cell 71 through a switchable partition or a valve, and the top of the activated carbon adsorption cell 72 is provided with a gas discharge port 721; the activated carbon adsorption cells 72 are filled with shell activated carbon with particle size of 12-20 meshes and filling density of 0.45g/cm3。
The leachate treatment unit 8 comprises a reinforced anaerobic hydrolysis reactor, a sequencing batch micro-bubble oxygenation device and a photocatalytic device which are sequentially connected;
the intensified anaerobic hydrolysis reactor is connected with a pipeline at the liquid outlet 616 of the fermentation bin, and a switchable partition plate or a switchable valve is arranged at the connection part;
the top of the sequencing batch type micro-bubble oxygen increasing device is provided with an oxygen increasing device liquid inlet, the bottom of the sequencing batch type micro-bubble oxygen increasing device is provided with an oxygen increasing device liquid outlet, and 3 layers of fillers, namely a pebble layer 821, a cinder layer 822 and a ceramsite layer 823, are paved in the device from top to bottom; 3 transverse pipes 824 made of PVC are respectively laid in each layer of filling, the bottom surfaces of the transverse pipes 824 are provided with vent holes, and the perforation rate is 15%; 9 PVC longitudinal pipes 825 with the pipe diameter of 20mm are arranged between the three layers of packing, the longitudinal pipes 825 are communicated between the transverse pipes 824 of different packing layers, and the tops of the longitudinal pipes 825 are communicated with outside air.
The leachate flowing out of the self-reinforced anaerobic hydrolysis reactor flows through the sequencing batch micro-bubble oxygen increasing device from top to bottom and enters the photocatalytic device; the liquid inlet of the oxygenation device and the liquid outlet of the oxygenation device can be provided with a valve, a water pump and other components, and the periodic water outlet mode promotes the external air to enter the filler from the longitudinal pipe through the suction of the transverse pipe by adopting intermittent and instantaneous water inlet so as to realize oxygenation.
An ultraviolet lamp, an automatic acid-base regulator feeding device, a pH detection device and an automatic photocatalyst feeding device are arranged in the photocatalytic device; one side of the photocatalytic device is provided with a leachate discharge outlet 831, and a switchable partition plate or a switchable valve is arranged at the leachate discharge outlet 831.
Acid and alkali for adjusting pH are respectively filled in the automatic feeding device of the acid-base regulator; the automatic photocatalyst feeding device is internally provided with nano titanium dioxide.
Further, an integrated automatic control unit 9 is included,
the integrated automatic control unit 9 comprises a PLC control module, an online monitoring module and a man-machine interaction module;
the PLC control module is used for realizing the automatic control of the material storage unit 3, the material loading unit 4, the pretreatment unit 5, the aerobic fermentation unit 6, the deodorization unit 7 and the leachate treatment unit 8; the device comprises switches for controlling the clapboards or valves, the water pumps, the conveyor belts or the material pumping pumps, and devices for controlling the operation of the separator 511, the crushing device 52, the humidity adjusting device 53, the stirring device 54, the feeding device 55, the blower, the stirring device 617 and the like.
The on-line monitoring module is used for receiving monitoring information fed back by each unit in real time, and the monitoring information comprises information collected by sensors such as a temperature sensor 618, a humidity sensor 619, an oxygen concentration sensor 620 and an odor sensor;
the man-machine interaction module is used for realizing information interaction between an operator and the system, inputting a control program and issuing a control instruction.
A vehicle-mounted method for quickly decomposing and fertilizing organic garbage comprises the following steps:
the vehicle-mounted organic garbage fast decomposition and fertilization system reaches scattered village and town garbage generation places:
s1, feeding:
starting the integrated automatic control unit, and putting the garbage into the feeding unit from the storage unit;
s2, pretreatment:
garbage enters a sorting machine from a feeding unit, the sorting of plastics is performed by switching a winnowing mode after metal sorting is completed in a magnetic separation mode, and the sorted metal, plastics and the like enter a material recycling cabinet for temporary storage so as to facilitate subsequent recycling;
opening a discharge port of the sorting machine, enabling the sorted organic garbage to fall into a crushing device, and crushing the organic garbage into particles;
opening a discharge port of the crushing device, enabling the organic garbage particles to fall into the humidity adjusting device, and adjusting the water content of the organic garbage particles to 50%;
opening the discharge port of the humidity adjusting device, conveying the materials to the stirring device, adding agricultural straws, changing the excrement of a toilet and the livestock and poultry breeding excrement, taking a small amount of materials to detect the carbon content and the nitrogen content, adjusting the carbon-nitrogen ratio to be 20-30, inoculating the decomposed compost according to the inoculation amount of 5%, and sending the organic materials obtained by uniformly stirring into the fermentation bin through the feeding device.
S3, aerobic fermentation:
pumping the composite bacterial liquid into a first liquid inlet pipe through a water pump, and spraying the composite bacterial liquid to the surface of the organic material through a first atomizing nozzle, wherein the inoculation amount is 3 per mill; starting an air blower, and controlling the ventilation rate at 0.6 L.min in the early stage of fermentation-1·kg-1The ventilation rate of the organic materials in the later fermentation period is reduced to 0.4 L.min-1·kg-1An organic material; turning on the turning and stirring device every 2d, and turning once for a fermentation period of 9 d;
in the initial heating stage of fermentation and the high-temperature stage in the middle stage of fermentation, the water content of the pile is controlled to be 50-60% (mass fraction), the water content can be improved by recycling leachate when the water content is too low, and the water content can be reduced by adding crop straws, sawdust and the like when the water content is too high.
The ventilation rate in the fermentation process can be adjusted at any time according to the temperature, and the temperature in the initial fermentation stage and the later cooling stage can be lower than 45 ℃; and in the high-temperature stage in the middle stage of fermentation, the temperature is controlled to be 45-60 ℃, if the temperature is too high, the ventilation rate can be properly increased, the overturning times of the stirring device in unit time are increased, and if the temperature is too low, the ventilation rate can be properly reduced, and the overturning times of the stirring device in unit time are reduced.
The oxygen concentration in the fermentation chamber is maintained at 16-20%, and the control is carried out by adjusting the ventilation rate.
S4, odor treatment:
the foul smell that aerobic fermentation process produced lets in biological deodorization check room, microbial liquid goes into second feed liquor pipe through the water pump, spray in biological deodorization check room by second atomizer, the foul smell concentration of waiting to detect the odor sensor stops spraying when reaching original concentration's 20%, open baffle or valve between active carbon adsorption check room and the biological deodorization check room, the foul smell gets into active carbon adsorption check room and carries out active carbon adsorption, open gas discharge port after the foul smell is handled and is reached emission standard, it discharges to the atmosphere to handle back gas.
S5, leachate treatment:
and (3) refluxing 20% of leachate discharged from a liquid outlet of the fermentation bin in the fermentation bin for fermentation, discharging 80% of leachate into the enhanced anaerobic hydrolysis reactor for treatment for 10 hours, after treatment, discharging into the sequencing batch micro-bubble oxygenation device for treatment for 12 hours, then discharging into the photocatalytic device, adjusting the pH of the leachate to 6, adding 8g/L of titanium dioxide, and performing ultraviolet lamp illumination treatment for 2.5 hours, thus discharging.
Example 2
The system and method of example 1 was used for waste treatment as experimental group and a control group was set: on the basis of example 1, the inoculated composite bacterial liquid in the aerobic fermentation unit is replaced by the bacillus megaterium bacterial liquid, and the concentration of the bacterial liquid is 2.0 multiplied by 107CFU/mL, the inoculation amount is 8 per mill.
After the fermentation was completed, each index of the two groups of fertilizers was measured, wherein the death rate of roundworm eggs was calculated from the number of roundworm eggs before the garbage disposal, and the results are shown in table 1.
TABLE 1
Under the technical parameters of the invention, the prepared fertilizer has better indexes than the indexes in the standard of bioorganic fertilizer (NY 884-2012).
Example 3
The system and method of example 1 was used for waste treatment as experimental group and a control group was set: in example 1, the treatment time in step S5 was adjusted, and the leachate was allowed to stay in the enhanced anaerobic hydrolysis reactor for 6 hours, in the sequencing batch micro bubble aeration apparatus for 10 hours, and in the photocatalytic apparatus for 2.5 hours.
The leachate obtained from the two treatments was subjected to various index measurements, and the results are shown in table 2.
TABLE 2
| Item | Experimental group | Control group |
| COD(mg/L) | 50 | 80 |
| BOD5(mg/L) | 8 | 15 |
| SS(mg/L) | 20 | 20 |
| Ammonia nitrogen (mg/L) | 4 | 8 |
| Total nitrogen (mg/L) | 12 | 15 |
| Total phosphorus (mg/L) | 0.6 | 0.8 |
Therefore, under the technical scheme of the invention, the quality of the outlet water stably reaches the standards of urban greening and vehicle washing in the quality of urban water for recycling urban miscellaneous water (GB/T18920-2002); and has better treatment effect on leachate than a control group.
Example 4
The system and method of example 1 was used for waste treatment as experimental group and a control group was set: in addition to example 1, the microbial inoculum was replaced with a Bacillus subtilis inoculum having a inoculum concentration of 4.0X 108CFU/mL; the two groups of bacterial liquids are used in the same amount.
The results of the measurements of the indexes of the two groups of odor-treated exhaust gases are shown in Table 3.
TABLE 3
| Item | Experimental group | Control group |
| Hydrogen sulfide (mg/m)3) | 0.01 | 0.05 |
| Ammonia (mg/m)3) | 0.1 | 0.35 |
| Methyl mercaptan (mg/m)3) | 0.0008 | 0.0008 |
| Dimethyl sulfide (mg/m)3) | 0.002 | 0.003 |
| Odor concentration (dimensionless) | 3 | 8 |
From the above, the concentration of the bacterial liquid used in the experimental group is lower and the deodorization effect is better under the same dosage.
The concentrations of hydrogen sulfide, ammonia, methyl mercaptan, methyl sulfide and odor discharged from the exhaust port of the organic garbage fast decomposition and fertilization system accord with new extension and reconstruction secondary standard requirements and plant standard values in the plant standard of malodorous pollutants specified in the discharge Standard of malodorous pollutants (GB 14554-93), and are obviously lower than the concentrations of various malodorous substances in the odor discharged by similar technical systems.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A vehicle-mounted system for quickly decomposing and fertilizing organic garbage,
the container type vehicle comprises a vehicle body and a container shell, wherein the container shell is arranged on the vehicle body;
a feeding unit, a pretreatment unit, an aerobic fermentation unit, a deodorization unit and a leachate treatment unit are arranged in the container shell;
the feeding unit is used for feeding garbage into the pretreatment unit;
the pretreatment unit is used for sorting, crushing, humidity adjusting, auxiliary material and decomposed compost mixing and stirring treatment of the garbage, and putting the organic materials obtained after treatment into the aerobic fermentation unit;
the aerobic fermentation unit utilizes the compound bacterial liquid to ferment the organic materials; the aerobic fermentation unit comprises a fermentation bin and a composite bacterial liquid storage tank;
the fermentation bin is provided with a fermentation bin exhaust port and a fermentation bin liquid outlet;
the composite bacterial liquid storage tank is filled with composite bacterial liquid, and the adding amount proportion of trichoderma viride, bacillus subtilis, azotobacter chroococcum and bacillus megaterium in the composite bacterial liquid is 2: 1: 1: 1, concentration of each bacterium is 1.8X 107-2.5×107CFU/mL；
The deodorization unit is connected with the aerobic fermentation unit and is used for purifying odor generated by garbage fermentation in the aerobic fermentation unit;
the deodorization unit comprises a microbial liquid storage tank, a biological deodorization grid chamber and an active carbon adsorption grid chamber;
the biological deodorization grid chamber is communicated with the exhaust port of the fermentation bin, a second liquid inlet system and an odor sensor are installed in the biological deodorization grid chamber, and the second liquid inlet system comprises a second liquid inlet pipe and a second atomizing nozzle; the second liquid inlet pipe is connected with the microbial liquid storage tank through a water pump; the second atomization nozzle is arranged on the second liquid inlet pipe;
the microbial liquid storage tank is filled with a microbial liquid, and the ratio of bacillus cereus, bacillus subtilis, lactobacillus plantarum and issatchenkia orientalis bacteria in the microbial liquid is 1: 1: 1: 1, the concentration of the bacterial liquid is 5.0X 107-6.0×107CFU/mL；
The activated carbon adsorption cells are in selective communication with the biological deodorization cells and provided with gas discharge ports;
the activated carbon adsorption cells are filled with shell activated carbon, the particle size of the shell activated carbon is 12-20 meshes, and the filling density is 0.4-0.5g/cm3；
The leachate treatment unit is connected with the aerobic fermentation unit and is used for purifying leachate generated by garbage fermentation in the aerobic fermentation unit;
the leachate treatment unit comprises a reinforced anaerobic hydrolysis reactor, a sequencing batch micro-bubble oxygenation device and a photocatalytic device which are sequentially connected;
the intensified anaerobic hydrolysis reactor is connected with the liquid outlet of the fermentation bin;
3 layers of fillers are paved in the sequencing batch type micro-bubble oxygen increasing device from top to bottom, and the three layers of fillers are respectively as follows: pebbles, coal slag and ceramsite; transverse pipes are laid in each layer of the filler respectively, and each transverse pipe is provided with a vent hole; the transverse pipes are communicated through longitudinal pipes, and the longitudinal pipes are communicated with external air; the leachate flowing out of the self-reinforced anaerobic hydrolysis reactor flows through the sequencing batch micro-bubble oxygen increasing device from top to bottom and enters the photocatalytic device; the sequencing batch type micro-bubble oxygenation device adopts an intermittent and instantaneous water inlet mode and a periodic water outlet mode to promote external air to be sucked into the filler;
an ultraviolet lamp and a photocatalyst are arranged in the photocatalytic device, and the photocatalyst is nano titanium dioxide; the photocatalytic device is also provided with a leachate discharge port;
the integrated automatic control unit is used for controlling and monitoring the feeding unit, the pretreatment unit, the aerobic fermentation unit, the deodorization unit and the leachate treatment unit.
2. The vehicle-mounted system for rapidly decomposing and fertilizing organic garbage according to claim 1,
the pretreatment unit comprises a sorting device, a crushing device, a humidity adjusting device, a stirring device and a feeding device;
the sorting device comprises a sorting machine and a material recovery cabinet; the separator is provided with a magnetic separation mode and an air separation mode; the recycling material cabinet is used for recycling and temporarily storing the metal and the light objects sorted by the sorting machine;
the crushing device is arranged at the downstream of the sorting machine;
the humidity adjusting device is arranged at the downstream of the crushing device, adjusts the humidity through a humidifier and a dehumidifier, and is provided with a humidity sensor;
the stirring device is arranged at the downstream of the humidity adjusting device and is used for uniformly mixing the materials subjected to humidity adjustment with auxiliary materials and the decomposed compost;
the feeding device is arranged at the downstream of the stirring device and is used for feeding the organic materials obtained after stirring treatment into the aerobic fermentation unit.
3. The vehicle-mounted system for rapidly decomposing and fertilizing organic garbage according to claim 1,
the fermentation bin is provided with a fermentation bin feeding port, a fermentation bin discharging port, a ventilation system, a fermentation bin exhaust port, a first liquid inlet system, a fermentation bin liquid outlet, a stirring device, a temperature sensor, a humidity sensor and an oxygen concentration sensor;
the ventilation system is arranged at the bottom of the fermentation bin;
the first liquid inlet system is arranged at the top in the fermentation bin and is connected with the composite bacterium liquid storage tank;
the stirring device is erected in the fermentation bin.
4. The vehicle-mounted system for rapidly decomposing and fertilizing organic garbage according to claim 3,
the ventilation system comprises a main ventilation pipe, a branch ventilation pipe and a blower; the ventilation main pipe is arranged at the bottom in the fermentation bin; the ventilation branch pipes are distributed on the ventilation main pipe and are provided with ventilation openings; the air blower is arranged outside the fermentation bin and is connected with the main ventilation pipe;
the first liquid inlet system comprises a first liquid inlet pipe and a first atomizing spray head; the first liquid inlet pipe is arranged at the top in the fermentation bin and is connected with the composite bacterial liquid storage tank through a water pump; the first atomization nozzle is arranged on the first liquid inlet pipe.
5. The vehicle-mounted system for rapidly decomposing and fertilizing organic garbage according to claim 3,
the integrated automatic control unit comprises a PLC control module, an online monitoring module and a man-machine interaction module;
the PLC control module is used for realizing the automatic control of the feeding unit, the pretreatment unit, the aerobic fermentation unit, the deodorization unit and the leachate treatment unit;
the online monitoring module is used for receiving monitoring information fed back by each unit in real time;
the man-machine interaction module is used for realizing information interaction between an operator and the system.
6. A vehicle-mounted method for quickly decomposing and fertilizing organic garbage is characterized by comprising the following steps:
the vehicle-mounted organic garbage rapid decomposition and fertilization system as claimed in any one of claims 1-5 is used for processing garbage, and after the garbage is put into the loading unit, the garbage is subjected to sorting, crushing, humidity adjustment, auxiliary material and decomposed compost mixing and stirring processing through the pretreatment unit; the organic material obtained after the treatment enters an aerobic fermentation unit for aerobic fermentation; and (3) fermenting the garbage in the aerobic fermentation unit to obtain a fertilizer, treating odor generated in the fermentation process by a deodorization unit and then discharging the odor into the atmosphere, recycling a part of generated leachate for fermentation of the aerobic fermentation unit, and treating a part of the leachate by a leachate treatment unit and then discharging the part of the leachate.
7. The vehicle-mounted method for rapidly decomposing and fertilizing organic garbage according to claim 6, characterized by comprising the following steps:
s1, feeding:
starting an integrated automatic control unit, and putting the garbage into a feeding unit;
s2, pretreatment:
the method comprises the following steps of (1) enabling garbage to enter a pretreatment unit from a feeding unit, sorting out metal and light substances, crushing organic garbage into particles, adjusting the water content to be 40-60%, adding auxiliary materials, controlling the carbon-nitrogen ratio to be 20-30, inoculating decomposed compost, and uniformly stirring to obtain organic materials which are sent into an aerobic fermentation unit; the auxiliary materials comprise agricultural straws, toilet-changing excrement and/or livestock and poultry breeding excrement;
s3, aerobic fermentation:
inoculating the organic material with the compound bacterial liquid, wherein the inoculation amount is 3-6 per mill; turning the pile once every 2d, wherein the fermentation period is 8-10 d;
s4, odor treatment:
introducing odor generated by aerobic fermentation into a deodorization unit, treating with microbial liquid and adsorbing with active carbon, and discharging into the atmosphere;
s5, leachate treatment:
the leachate which is not recycled is discharged after the enhanced anaerobic hydrolysis, the sequencing batch micro-bubble oxygenation and the photocatalysis.
8. The vehicle-mounted method for rapidly decomposing and fertilizing organic garbage according to claim 7,
in the step S4, after the odor is treated by the microbial liquid and is reduced to 20 percent of the original concentration, the odor is adsorbed by activated carbon;
s5, allowing the leachate to stay in an enhanced anaerobic hydrolysis reactor for 10 hours, stay in a sequencing batch micro-bubble oxygen increasing device for 12 hours, and stay in a photocatalytic device for 2.5 hours;
adjusting the pH value of the leachate to 6 in the photocatalytic device; the amount of titanium dioxide used was 8g/L based on the leachate to be catalytically treated.
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| CN110483112A (en) * | 2019-07-15 | 2019-11-22 | 内蒙古世洪农业科技有限公司 | A kind of system of the light letter of agricultural wastes resource utilization fermentation |
| CN111635265B (en) * | 2020-07-02 | 2021-04-09 | 南通惠农生物有机肥有限公司 | Automatic composting car with prevent straw jam |
| CN112390486A (en) * | 2020-11-04 | 2021-02-23 | 牧原食品股份有限公司 | Excrement disposal method and system |
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| CN112939649B (en) * | 2021-02-01 | 2022-07-26 | 北京建筑大学 | Integrated integrated wet garbage in-situ resource treatment system and treatment method |
| CN113651644B (en) * | 2021-08-24 | 2022-08-23 | 安徽科技学院 | Scalable compost truck |
| CN114350556A (en) * | 2021-12-31 | 2022-04-15 | 浙江华庆元生物科技有限公司 | Fruit and vegetable wastewater recycling microbial inoculum and application thereof in preparation of microbial compound fertilizer |
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