CN115259927A - Aerobic composting fermentation system based on film covering - Google Patents

Aerobic composting fermentation system based on film covering Download PDF

Info

Publication number
CN115259927A
CN115259927A CN202210963822.4A CN202210963822A CN115259927A CN 115259927 A CN115259927 A CN 115259927A CN 202210963822 A CN202210963822 A CN 202210963822A CN 115259927 A CN115259927 A CN 115259927A
Authority
CN
China
Prior art keywords
water
aerobic composting
fermentation system
composting fermentation
top support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210963822.4A
Other languages
Chinese (zh)
Inventor
孙国涛
王秀章
包奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northwest A&F University
Original Assignee
Northwest A&F University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northwest A&F University filed Critical Northwest A&F University
Priority to CN202210963822.4A priority Critical patent/CN115259927A/en
Publication of CN115259927A publication Critical patent/CN115259927A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90—Apparatus therefor
    • C05F17/964—Constructional parts, e.g. floors, covers or doors
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/60—Heating or cooling during the treatment
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/70—Controlling the treatment in response to process parameters
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90—Apparatus therefor
    • C05F17/964—Constructional parts, e.g. floors, covers or doors
    • C05F17/971—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material
    • C05F17/979—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material the other material being gaseous
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90—Apparatus therefor
    • C05F17/964—Constructional parts, e.g. floors, covers or doors
    • C05F17/971—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material
    • C05F17/986—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material the other material being liquid
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Molecular Biology (AREA)
  • Fertilizers (AREA)

Abstract

The invention discloses an aerobic composting fermentation system based on film covering, which belongs to the technical field of aerobic composting and comprises an impermeable ground, wherein the impermeable ground is provided with a certain gradient along the length direction and a groove, a percolate collector is arranged at one end with a lower gradient of the impermeable ground, a gas distribution pipeline is arranged in the groove, one side of the gas distribution pipeline is connected with an oxygen supply fan, three sides of the impermeable ground are provided with a wall body, a top support with pulleys is arranged above the wall body, the upper part of the top support is covered with a functional film, the lower part of the top support is provided with a spraying system and a composting monitoring unit, and the spraying system is connected with the percolate collector, a water tank and a microbial agent box. According to the invention, through automatic covering of the functional membrane and collection and utilization of the percolate, the problems of difficult water supplement of the surface layer of the medium temperature material, difficult cover lifting of the functional membrane and environmental pollution in the fermentation process are effectively avoided.

Description

Aerobic composting fermentation system based on film covering
Technical Field
The invention relates to the technical field of aerobic composting treatment of organic wastes, in particular to an aerobic composting fermentation system based on film covering.
Technical Field
With the continuous expansion of agricultural production and livestock and poultry breeding scale, the problem of environmental pollution caused by the discharge of a large amount of agricultural organic wastes and livestock and poultry feces is increasingly serious, and people pay attention to the pollution. In recent years, the nano-film covered aerobic high-temperature composting technology is a new high-efficiency environment-friendly composting technology and has the advantages of strong environment-friendly performance of reactor composting and large open composting treatment capacity. At present, the aerobic composting device is covered by the existing livestock and poultry manure film, the phenomenon of rapid water loss of surface materials is caused by the lack of a pile turning process in the composting process, and at the moment, the functional film is generally required to be manually uncovered to make the materials exposed for water supplement, and the functional film is re-used after water supplement. Although the mode can supplement the water content in the compost to a certain extent, the problems of non-uniform water supplement and inaccurate water content control can occur, and the operation process of manual water supplement is complex and the labor time is long; the laying and the lifting of the functional film consume manpower, and the process is complicated.
In addition, the initial materials of the high-temperature aerobic composting of the livestock and poultry manure can generate a large amount of high-concentration organic leachate under the action of gravity, and if the organic leachate is improperly treated and seeps underground, the organic leachate can directly or indirectly cause soil and water eutrophication and heavy metal pollution, thereby threatening human health. Meanwhile, leachate generated by composting contains various abundant microorganisms, and can be sprayed to a composting area in a backflow mode to serve as a microbial agent to achieve the purpose of continuous inoculation. However, the currently existing technical field of membrane covered fermentation lacks the technology related to percolate treatment.
Disclosure of Invention
The invention aims to solve the problems that the existing film-covered compost is difficult to replenish water, the film covering process is complicated and the percolate is not treated properly, and provides an aerobic compost fermentation system based on film covering.
The invention relates to an aerobic composting fermentation system based on film covering, which is characterized in that: the anti-seepage floor comprises an anti-seepage floor (11), wherein a certain gradient is formed in the anti-seepage floor along the length direction, a groove (10) is formed in the anti-seepage floor, a percolate collector (13) is arranged at the lower end of the anti-seepage floor along the length direction, a gas distribution pipeline (16) is arranged inside the groove (10), one side of the gas distribution pipeline (16) is connected with an oxygen supply fan (17), three sides of the anti-seepage floor are provided with a wall body (25), a top support with pulleys (8) is arranged above the wall body (25), a functional film (18) is covered on the upper portion of the top support, a spraying system and a compost monitoring unit (19) are arranged on the lower portion of the top support, and the spraying system is connected with a percolate collecting box (1), a water tank (14) and a microbial agent box (15).
Further, the gradient of the impermeable ground along the length direction is less than 5 degrees, and the impermeable ground comprises a hardened ground (24) and an HDPE geomembrane (21).
Furthermore, the upper part of the air distribution pipeline (16) is provided with a vent hole (20).
Further, the depth of the groove (10) is larger than the diameter of the gas distribution pipeline (16).
Furthermore, the functional membrane (18) has a 3-layer structure, the inner layer and the outer layer are protective layers, the material is polyester fiber, the middle layer is 1 functional layer, the material is expanded polytetrafluoroethylene, and water storage tanks (22) are arranged around the functional membrane.
Furthermore, the top support comprises a plurality of arch skeletons (2), each arch skeleton (2) is connected with a stand column (3), the stand column is fixed on a pulley (8), the pulley (8) is matched with a track (26) on wall bodies (25) at two sides of the pile body, and the functional film (18) is driven by a driving device (28) to automatically stretch.
Furthermore, a driving device (28) is attached to the outermost upright post (3), and the driving device (28) controls the pulley (8) to move.
Furthermore, the distance between every two adjacent arched frameworks (2) is 60-80cm, two connecting rods (4) are hinged between every two adjacent upright posts (3), and the two connecting rods are arranged in an X shape
Furthermore, the spraying system comprises a main water pipe (5) and a plurality of water distribution pipes (6), wherein a water inlet end (30) and a plurality of water outlet ends (27) are arranged on a water pipe main body of the main water pipe (5), the water inlet end (30) is connected with the percolate collecting box (2), the water tank (14) and the microbial agent box (15) through water pipes and electromagnetic valves 1, 2, 3, 4 and 5, and the electromagnetic valves are connected with a controller (29); the water outlet ends (27) are arranged on the pipe wall of the main water pipe (5).
Furthermore, one end of each of the plurality of water distribution pipes is connected with a water outlet end of the main water pipe, and a sprayer (7) is arranged on the other side of each of the plurality of water distribution pipes.
Furthermore, the main water pipe (5) and the plurality of water distribution pipes (6) adopt flexible pipes.
Further, the compost monitoring unit (19) comprises a temperature sensor, a humidity sensor and an oxygen concentration sensor, and the temperature sensor, the humidity sensor and the oxygen concentration sensor are all connected with the controller (29).
Furthermore, U-shaped grooves (12) are formed in two sides of the rail (9), and the U-shaped grooves (12) are matched with the water storage tank (22) of the functional film to form sealing connection.
Further, the oxygen supply fan (17) is connected with an electric heater (23)
Compared with the prior art, the invention has the beneficial effects that: set up the prevention of seepage ground into the grade of a definite grade, collect filtration liquid under the effect of gravity to flow back to the compost district through sprinkler, avoid filtration liquid to handle improper infiltration underground and cause secondary pollution, and reach the purpose of reutilization and continuous inoculation. In addition, the automatic covering and lifting and automatic water replenishing functions of the functional film are realized, and the problems that the moisture of the surface material is lost quickly, the functional film is labor-consuming to lay and lift and the like are solved.
Drawings
FIG. 1 is a schematic diagram of a structure of an aerobic composting fermentation system based on film covering in the application
FIG. 2 is a schematic view of a roller structure and a telescopic column;
FIG. 3 is a schematic view of a venting arrangement;
FIG. 4 is a schematic view showing the connection of a spraying system with a water tank, a percolate collector, a percolate collecting box and a microbial agent box;
FIG. 5 is a schematic side view of a membrane covering-based aerobic composting fermentation system
FIG. 6 is a schematic diagram of a control system
The device comprises a percolate collecting box 1, a percolate collecting box 2, an arched framework 3, a stand column 4, a connecting rod 5, a main water pipe 6, a water dividing pipe 7, a sprayer 8, pulleys 9, a rail 10, a groove 11, an impermeable ground 12, a U-shaped groove 13, a percolate collector 14, a water tank 15, a microbial agent box 16, a gas distribution pipeline 17, an oxygen supply fan 18, a functional film 19, a compost monitoring unit 20, an air vent 21, a HDPE geomembrane 22, a water storage tank 23, an electric heater 24, a hardened ground 25, a wall body 26, a water inlet port 27, a water outlet port 28, a driving device 29, a controller 30, a water pump 31, an electromagnetic valve 1, 32, a water outlet port 2, 33, an electromagnetic valve 3, 34 and an electromagnetic valve 4.
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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1-5, an aerobic composting fermentation system based on film covering comprises a percolate collecting unit, a spraying unit, a micro-positive pressure oxygen supply unit, a control system and an automatic telescopic film covering unit.
The control system mainly comprises a controller 29 and a compost monitoring unit 19. The compost monitoring unit 19 mainly includes a temperature sensor, a humidity sensor and an oxygen concentration sensor, and the temperature, humidity and oxygen concentration sensors are all connected with the controller 20. The compost monitoring unit can monitor the compost temperature, the oxygen content and the water content of the compost pile in real time, the controller 29 can react the compost temperature, the oxygen content and the water content of the compost pile according to different levels, and the spraying unit and the micro-positive pressure oxygen supply unit can be automatically controlled. The driving device 28 is connected with a controller 29, and can control the running of the pulley 8 and realize the automatic covering and uncovering of the functional film.
The automatic telescopic film covering unit comprises an arched framework 2, a stand column 3, a connecting rod 4, a pulley 8, a track 9, a wall 25 and a driving device 28. The top support comprises a plurality of arch skeletons 2, each arch skeleton 2 is connected with an upright post 3, the upright posts are fixed on pulleys 8, the pulleys 8 are matched with rails 26 on wall bodies 25 at two sides of the pile body, and the functional film 18 is driven by a driving device 28 to automatically stretch and retract; a driving device 28 is attached to the outermost upright post 3, and the driving device 28 controls the pulley 8 to move; the distance between the adjacent arched frameworks 2 is 60-80cm, two connecting rods 4 are hinged between the adjacent upright posts 3 and are arranged in an X shape
The micro-positive pressure oxygen supply unit mainly comprises a U-shaped groove 12, an air distribution pipeline 16, a nutrient supply fan 17, a functional film 18, an electric heater 23, a vent hole 20 and a water storage tank 22. The gas distribution pipeline 16 is placed in the groove 10 of the anti-seepage ground 11, the upper part of the gas distribution pipeline 16 is provided with a vent hole 20, an electric heater 23 is connected between the gas distribution pipeline 16 and the oxygen supply fan 17, when the oxygen content in the stack body is reduced, the oxygen supply fan 23 works under the action of the controller 19, and air supplies oxygen to the stack body from the vent hole 20 through the gas distribution pipeline 16. When the composting control unit detects that the temperature of the compost is too low, the electric heater 19 and the oxygen supply fan 17 work simultaneously under the action of the controller 19 to heat the compost; the functional film 18 has a 3-layer structure, the inner layer and the outer layer are protective layers made of polyester fibers, the middle layer 1 is a functional layer made of expanded polytetrafluoroethylene, and water storage tanks 22 are arranged around the functional film. When water is supplied to the water storage tank 22, the water storage tank can be matched with the U-shaped groove 12 on the wall 25 to form sealing connection.
The leachate collection unit mainly comprises an impermeable ground 11, a leachate collector 13 and a groove 10. The anti-seepage system mainly comprises a hardened ground 24 and an anti-seepage ground consisting of HDPE geomembranes 21. An HDPE impermeable membrane with the thickness of 1.5mm is selected, two layers are paved, and an anchoring groove is adopted for fixing. The hardened ground 24 can form a stable support HDPE geomembrane 21 for the stack body, so that the percolate can be effectively prevented from permeating into the soil to pollute the environment in the fermentation process; the gradient of the impermeable ground 11 along the length direction is less than 5 degrees, so that the percolate flows into the percolate collector 13 through the groove 10 under the action of gravity; the depth of the groove 10 is larger than the diameter of the gas distribution pipeline 16, so that the gas distribution pipeline 16 can be effectively prevented from being scratched by compost materials in the process of entering and exiting the aerobic composting fermentation system based on film covering.
The spraying unit mainly comprises a percolate collecting box 1, a main water pipe 5, a plurality of water distribution pipes 6, a sprayer 7, a water tank 14, a microbial agent box 15, a water pump 30, an electromagnetic valve 1 31, an electromagnetic valve 2 32, an electromagnetic valve 3, an electromagnetic valve 4 34, a water inlet end 26 and a water outlet end 27. A main water pipe 5 and a plurality of water diversion pipes 6 are installed at the lower part of the top support, the direction of the main water pipe is parallel to the grooves (5), the water diversion pipes are fixed on the arched framework (2), the main water pipe 5 is provided with a water inlet end 30 and a plurality of water outlet ends 27 on a water pipe main body, the water inlet end 30 is connected with the leachate collecting box 2, the water tank 14 and the microbial agent box 15 through water pipes and electromagnetic valves 1, 2, 3, 4 and 5, and the electromagnetic valves are connected with a controller 29; a plurality of water outlet ends 27 are arranged on the pipe wall of the main water pipe 5, the main water pipe 5 and the plurality of water distribution pipes 6 adopt hoses, one ends of the plurality of water distribution pipes are connected with the water outlet ends on the main water pipe, and the other sides of the plurality of water distribution pipes are provided with sprayers 7. When the compost monitoring unit detects that the moisture content of the compost is reduced, the controller 29 controls the electromagnetic valve 2 and the electromagnetic valve 4 34 to be closed, the electromagnetic valve 3 is opened, the water pump 30 runs, water in the water tank is led into the main water pipe 26 under the action of the water pump 30, and further water reaches the water distribution pipes 6 and is sprayed through the sprayer 7 under the action of water pressure; when the microbial agent needs to be manually sprayed, the controller 29 closes the electromagnetic valves 2 and 3 and opens the electromagnetic valve 4 and 34, the water pump 30 runs, the microbial agent is brought into the main water pipe 26 under the action of the water pump 30 and then enters the water distribution pipes 6 to spray the microbial agent through the sprayers 7 at the tail ends of the water distribution pipes, and the compost is promoted to be thoroughly decomposed. When the leachate is used as a microbial agent to achieve the purpose of continuous inoculation in order to reduce economic cost, the controller 29 controls the electromagnetic valve 2 32 and the electromagnetic valve 4 34 to be closed, the electromagnetic valve 3 33 and the water pump 30 to be opened, the leachate is brought into the main pipeline 26, then enters the sprayer through the plurality of water distribution pipes 6 to be sprayed, and the leachate is secondarily utilized.
The application example comprises the following implementation steps:
take pig manure and apple sawdust fermentation as an example
A. Dewatering
Dehydrating the pig manure in the manure soaking process by using a solid-liquid separator to obtain the pig manure with the water content of 69.9 percent by weight;
B. ingredients
The method comprises the steps of measuring the carbon and nitrogen contents of apple sawdust and pig manure, selecting a composite strain sold by Qinhuang island leading Kangdi agricultural technology Limited company under the trade name of an organic material decomposition agent as an additive, wherein the addition amount is 1 per mill of the quality of dried pig manure, uniformly mixing by using a turning machine, enabling the carbon-nitrogen ratio of a material obtained by mixing the apple sawdust and the pig manure to be about 25, and adjusting the water content of the mixed material to be 65-70%.
C. Construction of fermentation zone
The method comprises the steps of selecting an open ground with high and flat terrain and easy forklift operation, establishing an anti-seepage ground 11 which meets forklift operation and has a certain gradient, arranging a groove 11 on the anti-seepage ground 11, arranging a percolate collector 13 at one end with the lower gradient of the anti-seepage ground, arranging a gas distribution pipeline 16 in the groove 11, connecting one side of the gas distribution pipeline 16 with an oxygen supply fan 17, arranging wall bodies 25 on three sides of the anti-seepage ground, installing a top support with pulleys 8 above the wall bodies 25, covering a functional film 18 on the upper portion of the top support, arranging a spraying system and a compost monitoring unit 19 on the lower portion of the top support, and connecting the spraying system with a percolate collecting box 1, a water tank 14 and a microbial agent box 15.
D. Heap construction
The materials which are mixed well are transported to a fermentation area through a forklift, and the materials are guaranteed to be uniform and loose when being piled up, so that the conditions of inconsistent thickness, uneven water content and the like of the compost materials are prevented. In order to ensure that the gas is uniformly distributed, when the materials are piled up, the materials in the fermentation area must be fully distributed, so that triangular piled bodies or piled bodies with large height difference are prevented, and the piling time is not more than 2 days.
E. Film coating
The control unit is instructed to operate the driving device 28, the pulley 8 rolls to drive the upright post 3 and the arch-shaped framework 2 to move, and the functional film is automatically covered. Meanwhile, water is injected into the water storage tank 22 around the functional membrane to form a closed structure with the U-shaped groove 12, and a micro-positive pressure fermentation system is formed under the combined action of the oxygen supply fan and material fermentation.
F. Intelligent control high-temperature aerobic fermentation
The temperature, the water content and the oxygen content of the compost are continuously monitored in real time by the mounted compost monitoring unit 19 and fed back to the controller 19, and the start and stop of the oxygen supply fan 17, the electric heater 23, the water pump 30, the electromagnetic valve 1 31, the electromagnetic valve 2 32, the electromagnetic valve 3 and the electromagnetic valve 4 34 are controlled and fed back according to the program setting through the recording, storage and analysis of software in the controller 19. When the oxygen concentration of the stack is lower than 8%, the oxygen supply fan 17 is started, fresh air is sent to the fermentation stack through the air distribution pipeline 17 and the vent holes 20, and when the oxygen concentration of the stack is higher than 15%, or the oxygen supply fan 17 operates for more than 20min, the oxygen supply fan 17 stops operating. In the high-temperature aerobic fermentation process, the temperature of the pile body is 50-65 ℃, when the temperature of the fermentation pile is lower than 55 ℃, the ventilation quantity is reduced, the electric heater 23 operates, when the temperature of the fermentation pile is higher than 55 ℃ and lower than 70 ℃, the ventilation quantity is kept normal, and when the temperature of the fermentation pile is higher than 75 ℃, the high-pressure centrifugal fan (12) is started to reduce the temperature. When the surface water content of the stack is lower than 50%, the water pump 30 works to spray water in the water tank 14 through the main water pipe 5, the plurality of water distribution pipes 6 and the sprayer 7, and when the water content of the stack is higher than 65% or the water pump 30 runs for more than 15min, the water pump 30 stops running. When the microbial agent needs to be manually sprayed, the controller 29 closes the electromagnetic valves 2 and 3 and opens the electromagnetic valve 4 and 34, the water pump 30 runs, the microbial agent is brought into the main water pipe 26 under the action of the water pump 30 and then enters the water distribution pipes 6 to spray the microbial agent through the sprayers 7 at the tail ends of the water distribution pipes, and the compost is promoted to be thoroughly decomposed. When the leachate is used as a microbial agent to achieve the purpose of continuous inoculation in order to reduce economic cost, the controller 29 controls the electromagnetic valve 2 32 and the electromagnetic valve 4 34 to be closed, the electromagnetic valve 3 33 and the water pump 30 to be opened, the leachate is brought into the main pipeline 26 and then enters the sprayer through the plurality of water distribution pipes 6 to be sprayed, and the leachate is secondarily utilized.
G. Aging of the mixture
And (3) covering a film for fermentation for 20 days, lifting the functional film 18, completing high-temperature aerobic fermentation, and in order to further improve the decomposition effect, conveying the materials to a post-decomposition area by using a forklift, standing and stacking for 40 days, and turning over for 2 times. The water content of the aged material was 25.5% by weight.
The pig manure achieves the requirements of the animal manure innocent treatment technical specification (GB/T36195-2018) through the innocent treatment, and the results are listed in the following table 1.
Detecting items The result of the detection Unit of GB/T 36195-2018
Fecal coliform population <5 MPN/g ≤10 5 are provided with /kg
Death rate of ascarid eggs 99 % ≥94%
Fly (a Chinese character) No living pupa or newly-feathered adult fly in the pile No living pupae or newly-feathered adult flies in the heap
Index of germination of seeds 92.1%
Heavy metals Symbol GB/T25246-2010
While the present invention has been particularly shown and described with reference to the drawings, it will be understood by those skilled in the art that the present invention is not limited to the details of the foregoing embodiments, and various changes, additions and substitutions may be made without departing from the spirit and scope of the present invention.

Claims (10)

1. An aerobic composting fermentation system based on film covering is characterized in that: the anti-seepage floor comprises an anti-seepage floor (11), wherein a certain gradient is formed in the anti-seepage floor along the length direction, a groove (10) is formed in the anti-seepage floor, a percolate collector (13) is arranged at one end with the lower gradient of the anti-seepage floor, a gas distribution pipeline (16) is arranged inside the groove (10), one side of the gas distribution pipeline (16) is connected with an oxygen supply fan (17), three sides of the anti-seepage floor are provided with a wall body (25), a top support with pulleys (8) is arranged above the wall body (25), a functional film (18) is covered on the upper portion of the top support, a spraying system and a compost monitoring unit (19) are arranged on the lower portion of the top support, and the spraying system is connected with a percolate collecting box (1), a water tank (14) and a microbial agent box (15).
2. A membrane coverage based aerobic composting fermentation system as claimed in claim 1 wherein the impermeable ground is sloped less than 5 degrees along the length direction, the impermeable ground comprises of hardened ground (24) and HDPE geomembrane (21).
3. A membrane coverage based aerobic composting fermentation system as claimed in claim 1 wherein the gas distribution duct (16) is provided with vent holes (20) in the upper part.
4. A membrane coverage based aerobic composting fermentation system as claimed in claim 1 wherein the depth of the groove (10) is larger than the diameter of the gas distribution pipe (16).
5. The aerobic composting fermentation system based on film covering as claimed in claim 1, wherein the functional film (18) has 3 layers, the inner and outer layers are protective layers, the material is polyester fiber, the middle layer 1 is a functional layer, the material is expanded polytetrafluoroethylene, and the functional film is provided with water storage tanks (22) around, the water storage tanks (22) of the functional film are matched with the U-shaped grooves (12) arranged on both sides of the track (9) to form a sealing connection.
6. A membrane coverage based aerobic composting fermentation system as claimed in claim 1 wherein the top support comprises a plurality of arch shaped frames (2), each arch shaped frame (2) is connected to a column (3) fixed to a pulley (8), the pulleys (8) are engaged with rails (26) on the walls (25) on both sides of the pile and are driven by a driving device (28) to automatically extend and retract the functional membrane (18), the outermost column (3) is attached with a driving device (28), and the pulley (8) is controlled by the driving device (28) to move.
7. A membrane coverage based aerobic composting fermentation system as claimed in claim 6 wherein the distance between adjacent arch shaped frames (2) is 60-80cm, and two connecting rods (4) are hinged between adjacent columns (3) and arranged in X-shape.
8. A membrane coverage based aerobic composting fermentation system as claimed in claim 1 wherein the spraying system comprises a main water pipe (5) and a plurality of water diversion pipes (6), the main water pipe (5) is provided with a water inlet end (30) and a plurality of water outlet ends (27) on the water pipe body, the water inlet end (30) is connected with the percolate collecting box (2), the water tank (14) and the microbial agent box (15) through water pipes and solenoid valves 1, 2, 3, 4, 5, and the solenoid valves are connected with a controller (29); a plurality of water outlet ends (27) are arranged on the pipe wall of the main water pipe (5), the main water pipe (5) and the plurality of water distribution pipes (6) adopt hoses, one ends of the plurality of water distribution pipes are connected with the water outlet end on the main water pipe, and the other side of the water distribution pipes is provided with a sprayer (7).
9. A membrane coverage based aerobic composting fermentation system as claimed in claim 1 wherein the compost monitoring unit (19) comprises a temperature sensor, a humidity sensor and an oxygen concentration sensor, and the temperature, humidity and oxygen concentration sensors are all connected to the controller (29).
10. A membrane covering based aerobic composting fermentation system as claimed in claim 1 wherein the oxygen supply fan (17) is connected to an electric heater (23).
CN202210963822.4A 2022-08-11 2022-08-11 Aerobic composting fermentation system based on film covering Pending CN115259927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210963822.4A CN115259927A (en) 2022-08-11 2022-08-11 Aerobic composting fermentation system based on film covering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210963822.4A CN115259927A (en) 2022-08-11 2022-08-11 Aerobic composting fermentation system based on film covering

Publications (1)

Publication Number Publication Date
CN115259927A true CN115259927A (en) 2022-11-01

Family

ID=83750714

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210963822.4A Pending CN115259927A (en) 2022-08-11 2022-08-11 Aerobic composting fermentation system based on film covering

Country Status (1)

Country Link
CN (1) CN115259927A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206127092U (en) * 2016-07-06 2017-04-26 北京礼贤奥天农业有限公司 Natural pond sediment natural pond liquid piece -rate system
CN109734491A (en) * 2019-03-20 2019-05-10 山东生态家园环保工程有限公司 A kind of automatic telescopic film covering aerobic composting device
CN112047769A (en) * 2020-09-21 2020-12-08 农业农村部南京农业机械化研究所 Dual-film-covering static rapid composting system and composting method for organic wastes
CN113321541A (en) * 2021-06-09 2021-08-31 黑龙江省农业科学院农村能源与环保研究所 Method for covering film on biogas residue and excrement by mixing and aerobic composting
CN113511929A (en) * 2021-08-10 2021-10-19 哈尔滨市博能环保科技有限公司 Multi-organic-matter mixed film-coated aerobic composting device and composting process thereof
CN215559973U (en) * 2021-07-13 2022-01-18 荆门法麦克斯农业科技有限公司 Ventilation system for film-covered compost

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206127092U (en) * 2016-07-06 2017-04-26 北京礼贤奥天农业有限公司 Natural pond sediment natural pond liquid piece -rate system
CN109734491A (en) * 2019-03-20 2019-05-10 山东生态家园环保工程有限公司 A kind of automatic telescopic film covering aerobic composting device
CN112047769A (en) * 2020-09-21 2020-12-08 农业农村部南京农业机械化研究所 Dual-film-covering static rapid composting system and composting method for organic wastes
CN113321541A (en) * 2021-06-09 2021-08-31 黑龙江省农业科学院农村能源与环保研究所 Method for covering film on biogas residue and excrement by mixing and aerobic composting
CN215559973U (en) * 2021-07-13 2022-01-18 荆门法麦克斯农业科技有限公司 Ventilation system for film-covered compost
CN113511929A (en) * 2021-08-10 2021-10-19 哈尔滨市博能环保科技有限公司 Multi-organic-matter mixed film-coated aerobic composting device and composting process thereof

Similar Documents

Publication Publication Date Title
CN109160829B (en) Livestock and poultry manure nano-film aerobic composting device
CN104384170A (en) Process and device for biologically treating urban organic refuse and agricultural organic waste
CN204171071U (en) A kind of device being applicable to biological treatment organic garbage of city and agriculture debirs
CN102986541B (en) Establishing method of a controllable breeding fermentation bed with air cushion layer and fermentation bed
CN106900567A (en) A kind of environmentally friendly pig house and implementation method
EP1972691A1 (en) Process for the production of biogas by discontinuous, 2-step solids fermentation
CN108569918A (en) A kind of organic fertilizer aerobic fermentation method covering automation control using film
CN210450267U (en) In-situ aerobic stabilization treatment device for refuse landfill
CN202099212U (en) Constant-pressure ventilating fermentation equipment
CN209923219U (en) Intelligent fermentation system of beasts and birds excrement and urine integration
CN207355168U (en) A kind of environmental protection pig house
CN202576269U (en) Modular type rural production and living degradable garbage treatment device
CN217628174U (en) Aerobic composting fermentation system based on film covering
CN115259927A (en) Aerobic composting fermentation system based on film covering
CN102276316A (en) Constant-pressure venting fermentation method and equipment
US6171852B1 (en) Apparatus and method for decomposing waste material
CN114233091B (en) Harmless emergency treatment system for organic solid waste
CN115403414B (en) System and method for recycling agricultural waste
CN104694375B (en) A kind of step biogas fermentation device of dry and wet two and method
CN217025817U (en) Aerobic composting device
CN207375968U (en) Perishable rubbish aerobic fermentation device
CN210736593U (en) Membrane covered aerobic composting system suitable for intermittent feeding
CN107793004A (en) A kind of biological treatment system of municipal sludge
JP3975293B2 (en) Garbage disposal system
CN209923159U (en) Micro-oxygen type storage system for non-liquid fecal sewage

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination