CN112266280A - Community garbage combined treatment method and device - Google Patents
Community garbage combined treatment method and device Download PDFInfo
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- CN112266280A CN112266280A CN202011187095.4A CN202011187095A CN112266280A CN 112266280 A CN112266280 A CN 112266280A CN 202011187095 A CN202011187095 A CN 202011187095A CN 112266280 A CN112266280 A CN 112266280A
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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
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
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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
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/957—Apparatus therefor using two or more serially arranged devices
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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
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/989—Flow sheets for biological or biochemical treatment
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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
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- 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
According to the method, the fermentation time of a green waste section is controlled by regulating and controlling the crushing particle size of green tree branches and combining the application of a screen in a primary fermentation bin according to the characteristics of climate and green waste generation, and the carbon-nitrogen ratio is regulated and controlled by cooperating with kitchen waste, so that the problem that the kitchen waste and garden green waste in a community are produced asynchronously is solved, and the efficient combined treatment of the two wastes is finally realized. This device is through mutually supporting of the forward and reverse blade in elementary fermentation storehouse and the fermentation storehouse of rotting thoroughly, and the promotion and the free fall motion are made to the drive fermentation material in coordination, force the material to make axial cross drunkenness along the inclined plane simultaneously, realize the abundant mixing of fermentation material. The technical scheme adopted by the invention has simpler structure and higher feasibility. Therefore, the process and the device can not only ensure the maturity degree of the fermentation materials, but also balance the maturity degree, the fermentation time, the fermentation space and other aspects.
Description
Technical Field
The invention relates to the field of garbage resource utilization, in particular to a community garbage combined treatment method and a community garbage combined treatment device.
Background
With the progress of urbanization, more and more people gather in living units with cells as units, so that a large amount of domestic garbage and greening waste are generated, and how to utilize the domestic garbage and the greening waste into resources is a problem to be solved urgently. A large amount of organic fertilizers are needed for balcony planting and landscaping of community residents, the most suitable carbon-nitrogen ratio of the organic fertilizers is 25-30, the carbon-nitrogen ratio of kitchen garbage is about 10 generally, the carbon-nitrogen ratio of garden waste is 40-45 generally, and the low carbon-nitrogen ratio of the kitchen garbage and the high carbon-nitrogen ratio of the garden waste can realize carbon-nitrogen substance complementation, so that the possibility of jointly producing the high-efficiency organic fertilizers by using household garbage and greening waste is realized. Therefore, the organic fertilizer production gradually becomes the main direction of the resource utilization of the garbage in the residential area.
CN 104907322A discloses a kitchen garbage treatment facility, this treatment facility simple structure is compact, and area is little, through the rotation of barrel self, realizes that the material level in the barrel impels, rotatory stirring repeatedly, reaches the purpose of material degradation fermentation. CN106242830A discloses an auxiliary material for accelerating biodegradation of garden garbage, which comprises primary fermentation products of kitchen garbage, materials in a pile body with the temperature of 50-60 ℃ in the garden garbage fermentation process, quicklime and ferrous sulfate, can improve the degradation speed of garden garbage, promotes the oxidative degradation of microorganisms on organic matters, and further shortens the composting period. CN 102249746B discloses a two-stage kitchen waste aerobic composting method, which accelerates the composting process by adding K2HPO4 and MgSO4 compound salt, reduces the loss of nitrogen element, and stabilizes and improves the content of nitrogen element in the fertilizer. CN 205762903U discloses a gradient formula kitchen garbage high temperature rapid degradation equipment, including degrading the storehouse, inside is cut apart into upper bin, well storehouse, lower storehouse, has improved the treatment efficiency of equipment and the degradation degree of material, makes degradation product more innoxious and stabilization, and compartment structure can be better remain the degradation microbial community in the fermentation old material. CN 207159106U discloses a tower compost system of gardens rubbish, through the ventilation oxygen suppliment function of multiple spot high pressure high frequency, save the great higher agitating unit of cost of power consumption among the tower compost system, and area is little, and heat energy loss is few, the energy saving. CN 205115319U discloses vertical composting system of intelligence oxygen suppliment. CN 203639356U discloses a self-discharging type cylindrical aerobic composting reactor, which comprises a composting barrel, a horizontal rotating device and a vertical rotating device. In summary, in the prior art, the fermentation material enters and exits the fermentation device mainly by the following schemes: 1. all fermented materials enter a fermentation bin at one time, and are discharged from the fermentation bin at one time after being rapidly fermented and decomposed, such as CN 104907322A, CN 207159106U, CN 205115319U, CN 203639356U, under the condition, in order to deal with waste generated every day, high-temperature rapid fermentation is generally adopted, a treatment period is generally 24-48 hours, the treated materials are often not thoroughly decomposed, and the subsequent decomposition is needed. 2. The materials enter and exit from the feed inlet in batches and simultaneously exit from the discharge outlet in batches, and under the scheme, the fermentation time of the materials is short and easy to thoroughly decompose, or the fermentation device is made to be very large, so that the materials stay in the device for a long enough time, but the device occupies a lot of space. Therefore, the existing garbage treatment technology has certain defects, and can not meet the requirements of various aspects such as the degree of decomposition, the fermentation time, the fermentation space and the like.
Due to the particularity of residential scenes, the organic fertilizer produced by the residential garbage combined treatment needs to meet the following requirements at the same time: 1. the decomposition degree of the organic fertilizer is high so as to meet the requirements of safety, harmlessness and no peculiar smell of the organic fertilizer when planted on a balcony; 2. the fermentation period is short so as to deal with the waste generated by residents every day; 3. the processing device is to be miniaturized to save public places in the cell. In addition, a certain amount of kitchen waste is generated and needs to be treated every day in the community, the generation is continuous and relatively stable, but the generation amount of the community greening waste is not stable and is discontinuous along with great seasonal variation. How to reasonably allocate and use kitchen waste generated every day and landscaping waste generated discontinuously is another technical problem to be solved by the invention.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a cell garbage combined treatment method and a device.
In a first aspect, the present application provides a method for jointly treating garbage in a community, where the garbage in the community includes kitchen garbage and green garbage, and the method includes the following steps:
step 1: cutting the green garbage into green garbage sections with preset lengths according to the generation amount of the green garbage in the residential area and the environmental temperature;
step 2: sequentially adding the kitchen waste and the green waste sections into the primary fermentation bin on days 1 to N/2, and continuously rotating the primary fermentation bin to uniformly mix and ferment the kitchen waste and the green waste sections to form a primary fermentation product, wherein N days is a preset fermentation period of the garbage in a cell;
and step 3: at the end of the nth/2 day, transferring the primary ferment to a composting fermentation bin;
and 4, step 4: continuously rotating the decomposed fermentation bin from the (N/2 + 1) th day to the Nth day to further ferment the primary fermented product into a decomposed fermented product in the decomposed fermentation bin;
and 5: and (4) discharging the decomposed fermentation products out of the decomposed fermentation bin at the end of the Nth day to finish the community garbage combined treatment of one batch.
Preferably, the primary fermentation bin and the decomposing fermentation bin are cylindrical bin bodies coaxially and serially arranged, the step 4 of the cell garbage combined treatment of the previous batch is synchronously performed with the step 2 of the cell garbage combined treatment of the next batch, and the step 5 of the cell garbage combined treatment of the previous batch and the step 3 of the cell garbage combined treatment of the next batch are sequentially performed.
Preferably, the preset length is determined according to the following method:
when the generation amount of greening garbage in the residential area is small and the environmental temperature is low, the preset length is 2-3 cm;
when the generation amount of green garbage in the residential area is small and the ambient temperature is high, the preset length is 3-5 cm;
when the amount of the generated greening garbage in the residential area is large and the ambient temperature is low, the preset length is 0.5-1 cm;
when the amount of the generated greening garbage in the residential area is large and the ambient temperature is high, the preset length is 2-3 cm;
preferably, 6. ltoreq. N.ltoreq.14.
Preferably, the volume of the primary fermentation chamber can be set to V N/2 p, wherein V is the target daily treatment capacity of the garbage in the cell, p is a constant, and 1.5 is less than or equal to p and less than or equal to 2.
Preferably, the volume ratio of the primary fermentation bin to the decomposed fermentation bin is 1.5: 1-3: 1.
Preferably, in step 3, only 90% -95% of the primary fermented product is transferred to the decomposed fermentation bin, and in step 5, only 90% -95% of the decomposed fermented product is discharged out of the decomposed fermentation bin.
Preferably, at least more than 1 screen is arranged in the primary fermentation bin to prevent larger non-decomposed green garbage sections from entering the decomposed fermentation bin.
In addition, this application still provides a district rubbish combined treatment device, includes: the device comprises a shell, wherein a primary fermentation bin and a decomposed fermentation bin which are communicated are arranged in the shell, the primary fermentation bin and the decomposed fermentation bin are cylindrical bin bodies which are coaxially and serially arranged, a driving device is further arranged at the lower end of the shell and is used for driving the primary fermentation bin and the decomposed fermentation bin to rotate along the axial direction, a greening garbage feeding port and a kitchen garbage feeding port which are perpendicular to each other are connected with a feeding end of the primary fermentation bin through a spiral extrusion feeding device, the spiral extrusion feeding device comprises a conical shell, a matched spiral extrusion mechanism is arranged in the conical shell, a plurality of water seepage holes are distributed in the surface of the conical shell, and a shredding device for cutting greening garbage is further arranged between the greening garbage feeding port and the spiral extrusion feeding device;
a plurality of first forward blades, a plurality of first reverse blades and two first discharging blades are arranged on the inner wall of the primary fermentation bin, the first forward blades and the first reverse blades are respectively arranged in an inclined manner along the circumferential direction of the primary fermentation bin, the inclination directions of the first forward blades and the first reverse blades are opposite, the tail end of each first discharging blade extends into the decomposed fermentation bin from the primary fermentation bin in a rotating manner, and a screen is also arranged in the primary fermentation bin in an inclined manner;
be provided with a plurality of second positive blades, a plurality of second reverse blades and two second ejection of compact blades on the fermentation storehouse inner wall of becoming thoroughly decomposed, the second positive blade with second reverse blade follows respectively the slope sets up in the circumference in fermentation storehouse of becoming thoroughly decomposed, and incline direction is opposite, second ejection of compact blade's end certainly fermentation storehouse rotation extends to the casing is outside.
Preferably, the ratio of the diameter of the feed inlet to the diameter of the discharge outlet of the screw extrusion feeding device is 1.2: 1-2: 1.
The beneficial effect of this application is as follows:
according to the characteristics of climate and greening waste generation, the fermentation time of a greening garbage section is controlled by regulating and controlling the crushing particle size of greening tree branches and combining the application of a screen in a primary fermentation bin, certain greening tree branch particles are kept in the primary fermentation bin as far as possible, so that the greening tree branch particles are used for regulating and controlling the carbon-nitrogen ratio in cooperation with kitchen garbage, the pore structure of a fermentation material can be optimized by the greening garbage section reserved in the primary fermentation bin, and newly added kitchen garbage can quickly enter a fermentation state, so that the problem that kitchen garbage and garden greening garbage in a residential area are produced asynchronously is solved, and the efficient combined treatment of the two wastes is finally realized.
Compared with the prior batch feeding and batch discharging mode, the technical scheme of the invention realizes complete decomposition of discharged materials without obviously increasing the volume of the device, compared with a continuous feeding and discharging mode, the two-stage fermentation adopted by the invention has smaller volume while realizing complete decomposition, compared with the prior two-stage technical scheme, the device divides a fermentation area into a primary fermentation bin and a decomposed fermentation bin, the fermented materials are cooperatively driven to do lifting and free falling motion through the mutual cooperation of forward and reverse blades in the primary fermentation bin and the decomposed fermentation bin, meanwhile, the materials are forced to do axial cross movement along an inclined plane, the fermented materials are fully and uniformly mixed, the horizontal movement of the fermented materials can be realized through the mutual cooperation of the forward blades and the discharging blades, the rotary bin and discharge of the materials can be smoothly realized, and the device adopting the technical scheme of the invention has simpler structure, is more feasible. Therefore, the process and the device can not only ensure the maturity degree of the fermentation materials, but also balance the maturity degree, the fermentation time, the fermentation space and other aspects.
Drawings
For a clearer explanation of the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for jointly processing garbage in a cell according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a combined treatment apparatus for garbage in a cell according to an embodiment of the present invention;
shown in the figure:
1-shell, 11-primary fermentation chamber, 12-decomposed fermentation chamber, 13-driving device, 14-greening garbage feeding port, 15-kitchen garbage feeding port, 2-spiral extrusion feeding device, 21-conical shell, 22-spiral extrusion mechanism, 23-water seepage hole, 31-first forward blade, 32-second forward blade, 41-first reverse blade, 42-second reverse blade, 51-first discharging blade, 52-second discharging blade, 6-screen and 7-shredding device.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
Aiming at the defects in the prior art, the scheme provides a community garbage combined treatment method. Referring to fig. 1, a flow chart of a method for jointly processing garbage in a cell is shown. As can be seen from fig. 1, the method comprises the following steps:
s100: and cutting the greening garbage into greening garbage sections with preset lengths according to the generation amount of the greening garbage in the residential area and the environmental temperature.
The more the green waste is produced, the lower the environmental temperature is, the more the proper grain size mode tends to be fine so as to accelerate the decomposition of the green waste and avoid the excessive accumulation of kitchen waste in the fermentation bin; on the contrary, the less the amount of the greening waste is generated, the higher the environmental temperature is, the proper particle size mode tends to be coarse so as to delay the decomposition of the greening waste and enable a certain amount of greening waste and kitchen waste to be always reserved in the fermentation bin for fermentation together. Specifically, the preset length may be determined according to the following method: when the generation amount of greening garbage in the residential area is small and the environmental temperature is low, the preset length is 2-3 cm; when the generation amount of green garbage in the residential area is small and the ambient temperature is high, the preset length is 3-5 cm; when the amount of the generated greening garbage in the residential area is large and the ambient temperature is low, the preset length is 0.5-1 cm; when the amount of the green garbage generated in the residential area is large and the ambient temperature is high, the preset length is 2-3 cm. The preset length is only a reference and can be adjusted and optimized according to the actual conditions of all places.
S200: and (3) adding the kitchen waste and the green waste sections into the primary fermentation bin one by one on days 1 to N/2, and continuously rotating the primary fermentation bin to uniformly mix and ferment the kitchen waste and the green waste sections to form a primary fermentation product, wherein N days is a preset fermentation period of the garbage in the cell. According to the actual situation of each place, N is more than or equal to 6 and less than or equal to 14. In addition, the volume of the primary fermentation cabin can be set to V N/2 p, wherein V is the target daily treatment capacity of the garbage in the cell, p is a constant, and p is more than or equal to 1.5 and less than or equal to 2.
S300: at the end of the N/2 day, the primary fermentate was transferred to a composting fermentation house. The volume ratio of the primary fermentation bin to the decomposed fermentation bin is 1.5: 1-3: 1. In addition, in order to keep a certain amount of greening tree branches in the primary fermentation bin as much as possible, more than 1 screen is arranged in the fermentation bin to prevent larger particles of the un-decomposed tree branches from entering the decomposition fermentation bin.
S400: and continuously rotating the decomposed fermentation bin from the N/2+1 day to the N day to further ferment the primary fermented product into a decomposed fermented product in the decomposed fermentation bin.
S500: and (4) discharging the decomposed fermentation products out of the decomposed fermentation bin at the end of the Nth day to finish the community garbage combined treatment of one batch.
According to the method, according to the characteristics of climate and the production of greening waste, the fermentation time of a greening garbage section is controlled by regulating and controlling the crushing particle size of greening tree branches and combining the application of a screen in a primary fermentation bin, certain greening tree branch particles are kept in the primary fermentation bin as far as possible, so that the greening tree branch particles are used for regulating and controlling the carbon-nitrogen ratio in cooperation with kitchen waste, the pore structure of a fermentation material can be optimized by the greening garbage section reserved in the primary fermentation bin, and the newly added kitchen waste can quickly enter a fermentation state, so that the problem of asynchronous production of kitchen waste and garden greening waste in a residential area is solved, and the efficient combined treatment of the two wastes is finally realized.
In a preferred embodiment of the present application, the primary fermentation chamber and the decomposed fermentation chamber are cylindrical chamber bodies coaxially and serially arranged, S400 of the previous batch of cell waste combined treatment and S200 of the next batch of cell waste combined treatment are performed simultaneously, and S500 of the previous batch of cell waste combined treatment and S300 of the next batch of cell waste combined treatment are performed sequentially, so that continuous production of cell waste combined treatment can be realized.
During each material transfer, a certain amount of primary fermentation materials can be kept in the primary fermentation chamber to promote the later added fresh materials to enter a fermentation state as soon as possible, and a certain amount of decomposed fermentation materials can be kept in the decomposed fermentation chamber to promote the later added primary fermentation materials to enter a decomposed state as soon as possible. Specifically, in S300, only 90% -95% of the primary fermented product is transferred to the decomposed fermentation bin, and in S500, only 90% -95% of the decomposed fermented product is discharged out of the decomposed fermentation bin.
Aiming at the defects in the prior art, the scheme provides a community garbage combined treatment device. Please refer to fig. 2, which is a schematic structural diagram of a garbage combined processing apparatus for a community. As can be seen from fig. 2, the present device comprises: a shell 1, a primary fermentation chamber 11 and a decomposition fermentation chamber 12 which are communicated with each other are arranged in the shell 1, the primary fermentation chamber and the decomposing fermentation chamber are cylindrical chamber bodies which are coaxially and serially arranged, the lower end of the shell 1 is also provided with a driving device 13, the driving device 13 is used for driving the primary fermentation bin 11 and the decomposed fermentation bin 12 to rotate along the axial direction, a green garbage feeding port 14 and a kitchen garbage feeding port 15 which are perpendicular to each other are connected with the feeding end of the primary fermentation bin 11 through a screw extrusion feeding device 2, the screw extrusion feeding device 2 comprises a conical shell 21, a matched screw extrusion mechanism 22 is arranged in the conical shell 21, a plurality of water seepage holes 23 are distributed on the surface of the conical shell 21, a shredding device 7 for cutting the green waste is also arranged between the green waste feeding hole 14 and the screw extrusion feeding device 2. In this embodiment, afforestation rubbish feed inlet 14 and 2 vertical distributions of screw extrusion feed arrangement, rubbish feed inlet 15 and 2 horizontal distributions of screw extrusion feed arrangement remain in the kitchen, afforestation rubbish is mostly the discarded object that branch trunk etc. have certain length, afforestation rubbish feed inlet 14 is located screw extrusion feed arrangement 2's top, can make afforestation rubbish get into screw extrusion feed arrangement 2 inside along feedstock channel smoothly under the action of gravity, and simultaneously, also tailor as required for afforestation rubbish later stage and leave certain space. In the preferred embodiment of the present application, the ratio of the diameter of the inlet to the outlet of the screw extrusion feeder 2 can be set to 1.2: 1-2: 1. In this range, a fermentation material with a suitable water content can be obtained, and the volume of the kitchen waste can be properly compressed.
Be provided with a plurality of first forward blades 31, a plurality of first reverse blade 41 and two first ejection of compact blades 51 on the 11 inner walls in elementary fermentation storehouse, first forward blade 31 with first reverse blade 41 follows respectively the slope setting in the circumference in elementary fermentation storehouse 11, and the incline direction is opposite, first ejection of compact blade 51's end certainly elementary fermentation storehouse 11 is rotatory to be extended to inside the fermentation storehouse 12 of becoming thoroughly decomposed, it is provided with screen cloth 6 still to incline in the fermentation storehouse 11 of elementary. When the primary fermentation chamber 11 rotates reversely, the first forward blade 31 and the first reverse blade 41 cooperate to drive the fermented material to perform lifting and free falling movements, and meanwhile, the material is forced to perform axial cross movement along the inclined plane, so that the material is fully mixed. When the primary fermentation chamber 11 rotates in the forward direction, the first forward blade 31 pushes the fermented material to the first discharging blade 51, and the first discharging blade 51 can extend to the inside of the decomposed fermentation chamber 12, so as to drive the fermented material to enter the decomposed fermentation chamber 12.
Be provided with a plurality of second forward blades 32, a plurality of reverse blades 42 of second and two ejection of compact blades 52 on the fermented storehouse 12 inner wall of rotting thoroughly, second forward blade 32 with reverse blade 42 of second follows respectively the slope sets up in the circumference of fermented storehouse 12 of rotting thoroughly, and the incline direction is opposite, second ejection of compact blade 52's end certainly fermented storehouse 12 of rotting is rotatory to extend to the casing 1 outside. When the decomposed fermentation bin 12 rotates reversely, the second forward blade 32 and the second reverse blade 42 cooperatively drive the fermented materials to perform lifting and free falling motions, and meanwhile, the materials are forced to perform axial cross movement along the inclined plane, so that the materials are fully mixed. When the decomposed fermentation bin 12 rotates in the forward direction, the second forward blades 32 can discharge the fermented materials out of the decomposed fermentation bin 12.
In a fermentation period, the materials after primary fermentation enter the decomposing fermentation bin at one time, oxygen is fully supplied, the temperature of the materials is kept, and efficient fermentation is realized. The screen 6 in this scheme sets up and can prevent that great trees branch and trunk granule from getting into the fermentation storehouse 12 of becoming thoroughly decomposed, is favorable to realizing above-mentioned purpose.
Compared with the prior batch feeding and batch discharging mode, the technical scheme of the invention realizes complete decomposition of discharged materials without obviously increasing the volume of the device, compared with a continuous feeding and discharging mode, the two-stage fermentation adopted by the invention has smaller volume while realizing complete decomposition, compared with the prior two-stage technical scheme, the device divides a fermentation area into a primary fermentation bin 11 and a decomposed fermentation bin 12, the fermentation materials are driven to do lifting and free falling motion in a coordinated manner through the mutual cooperation of forward and reverse blades in the primary fermentation bin 11 and the decomposed fermentation bin 12, the materials are forced to do axial cross movement along an inclined plane, the full uniform mixing of the fermentation materials is realized, the horizontal movement of the fermentation materials can be realized through the mutual cooperation of the forward blades and the discharging blades, the bin transferring and discharging of the materials are smoothly realized, and the device has simpler structure, is more feasible. Therefore, the process and the device can not only ensure the maturity degree of the fermentation materials, but also balance the maturity degree, the fermentation time, the fermentation space and other aspects.
The present solution is explained below with a specific embodiment.
The daily treatment capacity of the kitchen garbage is designed to be 200kg, the generation amount of the community greening garbage fluctuates along with seasons, the fermentation period is designed to be 14 days, and the volume of the primary fermentation bin is 2m3The volume of the decomposed fermentation chamber is 1m3And cutting the green garbage into green garbage sections with preset lengths according to the environmental temperature.
In the previous 7 days, kitchen garbage and green garbage in the residential area are added into the primary fermentation bin one by one, and the primary fermentation bin adopts a reverse mode. On the 8 th day, the primary fermentation bin rotates forwards firstly, most of the materials in the primary fermentation bin are transferred to the decomposed fermentation bin at one time, and a small part of the materials are continuously left in the primary fermentation bin to promote the fermentation of the materials of the next batch. On 8-14 days, materials are added into the primary fermentation bin one by one, and high-temperature decomposition fermentation is continuously carried out in the decomposition fermentation bin without adding new materials. On day 14, most of the materials in the decomposed fermentation bin are discharged at one time, and a small part of the materials are continuously left in the primary fermentation bin to promote the fermentation of the materials of the next batch. And then, transferring the materials in the primary fermentation bin to a decomposing fermentation bin to start decomposing fermentation of the next batch, and repeating the steps.
The ratio of the inlet diameter to the outlet diameter of the spiral extrusion feeding device in the community garbage combined treatment device is 2, 2 screens are arranged in the primary fermentation bin and are respectively arranged in the middle and the tail of the primary fermentation bin, and the screens and the axis of the fermentation bin form an included angle of 65 degrees. Experience shows that after 14 days, the germination indexes of the seeds of the fermentation materials discharged from the decomposed fermentation bin all reach over 95 percent, which indicates that the organic fertilizer produced by the scheme has relatively high decomposition degree.
In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
Claims (10)
1. A community garbage combined treatment method is characterized by comprising the following steps:
step 1: cutting the green garbage into green garbage sections with preset lengths according to the generation amount of the green garbage in the residential area and the environmental temperature;
step 2: sequentially adding the kitchen waste and the green waste sections into the primary fermentation bin on days 1 to N/2, and continuously rotating the primary fermentation bin to uniformly mix and ferment the kitchen waste and the green waste sections to form a primary fermentation product, wherein N days is a preset fermentation period of the garbage in a cell;
and step 3: at the end of the nth/2 day, transferring the primary ferment to a composting fermentation bin;
and 4, step 4: continuously rotating the decomposed fermentation bin from the (N/2 + 1) th day to the Nth day to further ferment the primary fermented product into a decomposed fermented product in the decomposed fermentation bin;
and 5: and (4) discharging the decomposed fermentation products out of the decomposed fermentation bin at the end of the Nth day to finish the community garbage combined treatment of one batch.
2. The residential quarter refuse combined treatment method according to claim 1, wherein said primary fermentation bin and said decomposed fermentation bin are cylindrical bin bodies coaxially and serially arranged, step 4 of the residential quarter refuse combined treatment of the previous batch is performed synchronously with step 2 of the residential quarter refuse combined treatment of the next batch, and step 5 of the residential quarter refuse combined treatment of the previous batch is performed sequentially with step 3 of the residential quarter refuse combined treatment of the next batch.
3. The method for jointly processing cell wastes according to claim 1, wherein the preset length is determined according to the following method:
when the generation amount of greening garbage in the residential area is small and the environmental temperature is low, the preset length is 2-3 cm;
when the generation amount of green garbage in the residential area is small and the ambient temperature is high, the preset length is 3-5 cm;
when the amount of the generated greening garbage in the residential area is large and the ambient temperature is low, the preset length is 0.5-1 cm;
when the amount of the green garbage generated in the residential area is large and the ambient temperature is high, the preset length is 2-3 cm.
4. The method for jointly processing garbage in a community as claimed in claim 1, wherein N is greater than or equal to 6 and less than or equal to 14.
5. The method of claim 1, wherein the volume of the primary fermentation chamber is set to V N/2 p, where V is the target daily throughput of the garbage, p is a constant, and 1.5. ltoreq. p.ltoreq.2.
6. The residential refuse combined treatment method according to claim 1, wherein the volume ratio of the primary fermentation bin to the decomposed fermentation bin is 1.5: 1-3: 1.
7. The residential refuse combined treatment method according to claim 1, wherein only 90-95% of the primary fermented product is transferred to the decomposed fermentation bin in step 3, and only 90-95% of the decomposed fermented product is discharged from the decomposed fermentation bin in step 5.
8. The residential refuse combined treatment method according to claim 1, wherein at least 1 or more screens are provided in the primary fermentation tank to prevent larger non-decomposed green refuse pieces from entering the decomposed fermentation tank.
9. A district waste combined treatment device, comprising: the garbage bin comprises a shell (1), wherein a primary fermentation bin (11) and a decomposed fermentation bin (12) which are communicated with each other are arranged in the shell (1), the primary fermentation bin and the decomposed fermentation bin are cylindrical bin bodies which are coaxially connected in series, a driving device (13) is further arranged at the lower end of the shell (1), the driving device (13) is used for driving the primary fermentation bin (11) and the decomposed fermentation bin (12) to rotate along the axial direction, a greening garbage feeding port (14) and a kitchen garbage feeding port (15) which are perpendicular to each other are connected with a feeding end of the primary fermentation bin (11) through a spiral extrusion feeding device (2), the spiral extrusion feeding device (2) comprises a conical shell (21), a spiral extrusion mechanism (22) which is matched with each other is arranged in the conical shell (21), and a plurality of water seepage holes (23) are distributed in the surface of the conical shell (21), a shredding device (7) for cutting the green waste is arranged between the green waste feeding hole (14) and the spiral extrusion feeding device (2);
a plurality of first forward blades (31), a plurality of first reverse blades (41) and two first discharging blades (51) are arranged on the inner wall of the primary fermentation bin (11), the first forward blades (31) and the first reverse blades (41) are respectively arranged in an inclined manner along the circumferential direction of the primary fermentation bin (11), the inclination directions are opposite, the tail ends of the first discharging blades (51) rotatably extend into the decomposed fermentation bin (12) from the primary fermentation bin (11), and a screen (6) is also arranged in the primary fermentation bin (11) in an inclined manner;
be provided with a plurality of second forward blades (32), a plurality of reverse blades of second (42) and two second ejection of compact blades (52) on rotten ripe fermentation storehouse (12) inner wall, second forward blade (32) with reverse blade of second (42) are followed respectively the slope setting is upwards inclined in the circumference of rotten ripe fermentation storehouse (12), and the incline direction is opposite, the end of second ejection of compact blade (52) certainly rotten ripe fermentation storehouse (12) rotation extends to casing (1) outside.
10. The community waste combined treatment device according to claim 9, wherein the ratio of the diameter of the feed inlet to the discharge outlet of the screw extrusion feeding device (2) is 1.2: 1-2: 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011187095.4A CN112266280A (en) | 2020-10-30 | 2020-10-30 | Community garbage combined treatment method and device |
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| CN202011187095.4A CN112266280A (en) | 2020-10-30 | 2020-10-30 | Community garbage combined treatment method and device |
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Application publication date: 20210126 |