CN113004066A - Kitchen waste rapid treatment equipment and method - Google Patents
Kitchen waste rapid treatment equipment and method Download PDFInfo
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- CN113004066A CN113004066A CN202110323774.8A CN202110323774A CN113004066A CN 113004066 A CN113004066 A CN 113004066A CN 202110323774 A CN202110323774 A CN 202110323774A CN 113004066 A CN113004066 A CN 113004066A
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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
- 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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Abstract
The invention discloses a kitchen waste rapid treatment device and a method, wherein the device comprises: the screening pretreatment unit is respectively provided with a kitchen waste feed hopper and a kitchen waste purifying outlet, and the kitchen waste purifying outlet is connected with the oxidation unit; the oxidation unit is respectively provided with a solid material outlet and a waste gas outlet, and the solid material outlet is connected with the dehydration unit; the dehydration unit is respectively provided with a solid material outlet and a liquid material outlet; a solid material outlet of the dehydration unit is connected with the composting unit; the composting unit is respectively provided with an aerobic microbial inoculum feeding port, a waste gas discharge port and a nutrient soil outlet; the waste gas outlet of the oxidation unit and the waste gas outlet of the composting unit are both connected with an odor treatment unit, and the odor treatment unit is provided with a treated waste gas outlet. The equipment and the method can oxidize and aerobically compost by a wet oxidation method, quickly treat kitchen garbage to obtain liquid fertilizer and nutrient soil, and have no pollutant discharged to the environment in the whole treatment process.
Description
Technical Field
The invention relates to the field of distributed treatment of kitchen waste, in particular to a device and a method for quickly treating kitchen waste.
Background
Kitchen waste is a main pollution source of urban household garbage, accounts for about 40-60% of the household garbage, and is generally generated in communities, enterprises and public institutions, schools, farmer markets, supermarkets, catering service industries and the like. The kitchen waste is mainly starch, dietary fiber, animal fat and protein. With the advance of the garbage classification career in China, the distributed rapid treatment of the kitchen garbage becomes a difficult problem.
Chinese patent CN202010897417.8 discloses kitchen waste treatment equipment and method, which comprises crushing, stirring, aerobic fermentation and organic fertilizer formation after fermentation. Another Chinese patent CN201911402822.1 discloses a treatment device and a method for small-scale kitchen waste in towns, which comprises draining, coarse crushing, fine crushing and sorting and aerobic composting.
However, the treatment equipment of the two schemes has the problems that odor cannot be treated, the odor overflows to pollute the environment, secondary fermentation cannot be carried out and the like.
Disclosure of Invention
Based on the problems in the prior art, the invention aims to provide a kitchen waste rapid treatment device and a method, which can solve the problems that the existing kitchen waste treatment device cannot treat odor, cause odor to overflow and pollute the environment, cannot perform secondary fermentation treatment and the like.
The purpose of the invention is realized by the following technical scheme:
the embodiment of the invention provides kitchen waste rapid treatment equipment, which comprises:
the device comprises a screening pretreatment unit, an oxidation unit, a dehydration unit, a composting unit and an odor treatment unit; wherein the content of the first and second substances,
the screening pretreatment unit is respectively provided with a kitchen waste feed hopper and a kitchen waste purifying outlet, and the kitchen waste purifying outlet is connected with the oxidation unit;
the oxidation unit is respectively provided with a solid material outlet and a waste gas outlet, and the solid material outlet is connected with the dehydration unit;
the dehydration unit is respectively provided with a solid material outlet and a liquid material outlet;
the solid material outlet of the dehydration unit is connected with the composting unit;
the composting unit is respectively provided with an aerobic microbial inoculum feeding port, a waste gas discharge port and a nutrient soil outlet;
the waste gas outlet of the oxidation unit and the waste gas outlet of the composting unit are both connected with the odor treatment unit, and the odor treatment unit is provided with a treated waste gas outlet.
The embodiment of the invention also provides a kitchen waste rapid treatment method, and the kitchen waste rapid treatment equipment comprises the following steps:
pretreatment unit, oxidation unit, dehydration unit, composting unit and odor treatment unit
The kitchen waste enters a screening pretreatment unit of the treatment equipment through a feed hopper for screening treatment, and the kitchen waste is screened to obtain a kitchen waste clean material;
the kitchen waste clean material enters an oxidation unit of the treatment equipment, is indirectly heated to 150-300 ℃, is introduced with oxygen and/or compressed air to increase the pressure to 0.5-5 MPa, is oxidized by a wet oxidation method for 0.5-2 hours to decompose macromolecular organic matters in the kitchen waste into micromolecular substances and kill harmful germs; after the pressure is relieved to normal pressure, the oxidized materials are output to the dehydration unit for processing; the odor generated in the oxidation process is output to an odor treatment unit of the treatment equipment for deodorization and then is discharged;
the dehydration unit carries out solid-liquid separation treatment on the input oxidized material, the separated liquid rich in various nutrient elements is output and diluted to be applied as liquid fertilizer, and the separated solid substance is conveyed to the composting unit for composting treatment;
and adding an aerobic microbial inoculum into the composting unit, mixing the aerobic microbial inoculum with the input solid matter, indirectly heating to 50-65 ℃ for aerobic composting for 1-2 days, outputting the obtained solid matter after composting as nutrient soil, and conveying odor generated in the composting process to the odor treatment unit for deodorization and then discharging.
According to the technical scheme provided by the invention, the kitchen waste rapid treatment equipment and the method provided by the embodiment of the invention have the beneficial effects that:
the pretreatment unit, the oxidation unit, the dehydration unit and the composting unit are sequentially connected, and the odor outlet of the oxidation unit and the composting unit are respectively connected with the odor treatment unit, so that equipment capable of degrading kitchen garbage by adopting a wet oxidation method is formed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic view of a kitchen waste rapid treatment apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an oxidation reactor of a kitchen waste rapid treatment apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a deodorizer of a kitchen waste rapid treatment apparatus according to an embodiment of the present invention;
the parts corresponding to each mark in the figure are: 100-a pretreatment unit; 200-an oxidation unit; 300-a dehydration unit; 400-a composting unit; 500-odor treatment unit; 1-sealed drum screen; 2-a first screw conveyor; 3-a first heating device; 4-an oxidation reactor; 5-a second screw conveyor; 6-plate and frame filter press; 7-a third screw conveyor; 8-A composting reactor; 9-a second heating device; 10-a deodorizer; 11-a spiral discharging machine; 12-an exhaust gas outlet; 13-a feed inlet; 14-an oxidant addition port; 15-a thermometer; 16-a manometer; 17-a stirrer; 18-a motor; 19-an air inlet; 20-gas distribution plate; 21-an ultraviolet lamp; 22-an air inlet; 23-air outlet; 24-an activated carbon layer; 25-Supported TiO2A natural clinoptilolite layer of a photocatalyst.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the specific contents 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 embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides a kitchen waste rapid processing apparatus, including:
the device comprises a screening pretreatment unit, an oxidation unit, a dehydration unit, a composting unit and an odor treatment unit; wherein the content of the first and second substances,
the screening pretreatment unit is respectively provided with a kitchen waste feed hopper and a kitchen waste purifying outlet, and the kitchen waste purifying outlet is connected with the oxidation unit;
the oxidation unit is respectively provided with a solid material outlet and a waste gas outlet, and the solid material outlet is connected with the dehydration unit;
the dehydration unit is respectively provided with a solid material outlet and a liquid material outlet;
the solid material outlet of the dehydration unit is connected with the composting unit;
the composting unit is respectively provided with an aerobic microbial inoculum feeding port, a waste gas discharge port and a nutrient soil outlet;
the waste gas outlet of the oxidation unit and the waste gas outlet of the composting unit are both connected with the odor treatment unit, and the odor treatment unit is provided with a treated waste gas outlet.
In the above processing apparatus, the sieving pretreatment unit includes:
the sealed rotary screen and the first spiral conveyor are connected in sequence; wherein the content of the first and second substances,
the sealed drum screen is provided with the kitchen waste feeding hopper;
and the tail end discharge end of the first spiral conveyor is used as the discharge hole and connected with the oxidation unit.
In the above processing apparatus, the oxidation unit includes:
an oxidation reactor and a first heating device; wherein the content of the first and second substances,
the oxidation reactor is provided with a material inlet, a solid material outlet and a waste gas outlet respectively, the material inlet is connected with the pretreatment unit, and the solid material outlet is connected with the dehydration unit;
the first heating device is connected with the oxidation reactor.
In the above treatment apparatus, the oxidation reactor further comprises: an oxidant addition port;
the first heating device adopts an electrically heated heat-conducting oil external coil indirect heating device, and is coiled on the oxidation reactor. The first heating device can indirectly heat the materials in the oxidation reactor.
Referring to fig. 2, specifically, the oxidation reactor is a horizontal cylindrical reactor, and an oxidant inlet, a feed inlet, and an exhaust gas outlet are respectively arranged at the upper part of the oxidation reactor; a transverse stirrer is arranged in the oxidation reactor; the bottom in the oxidation reactor is provided with a gas distribution plate, and one end of the gas distribution plate is connected with a gas inlet; the bottom of the oxidation reactor is provided with a first heating device. Wherein, the horizontal stirrer consists of a stirrer body which is horizontally arranged in the oxidation reactor and a motor which drives the stirrer body outside the oxidation reactor.
In the above processing apparatus, the dehydration unit includes:
the second screw conveyor, the plate-and-frame filter press and the third screw conveyor are connected in sequence; wherein the content of the first and second substances,
the plate-and-frame filter press is provided with the liquid material outlet;
and the discharge end of the third screw conveyor is used as the solid material outlet.
In the above processing apparatus, the composting unit includes:
the composting reactor, the second heating device and the spiral discharging machine; wherein the content of the first and second substances,
the composting reactor is provided with a solid material inlet, the aerobic microbial inoculum feeding port, a waste gas outlet and a material outlet respectively, the solid material inlet is connected with the dehydration unit, the material outlet is connected with the spiral discharging machine, and the discharging end of the spiral discharging machine is used as the nutrient soil outlet;
the second heating device is connected with the aerobic microbial inoculum feeding port.
In the treatment equipment, the second heating device adopts an electrically heated heat-conducting oil external coil indirect heating device, and the second heating device is coiled on the compost reactor. The second heating device can indirectly heat the materials in the composting reactor.
Referring to fig. 3, in the above treatment apparatus, the odor treatment unit employs a deodorizer, the deodorizer body has an air inlet at the bottom and an air outlet at the top, and an activated carbon layer and a plurality of layers of supported TiO are sequentially disposed in the deodorizer body from the air inlet to the air outlet2The natural clinoptilolite layer of photocatalyst is equipped with a plurality of ultraviolet lamps in the deodorizer body around the natural clinoptilolite layer. Adopts filled active carbon and layered laying of natural clinoptilolite loaded TiO2The photocatalyst deodorizer can realize physical adsorption of active carbon and TiO loading clinoptilolite2The photocatalyst treats odor generated by the system in a mode of combining photocatalytic degradation under the irradiation of an ultraviolet lamp, so that the odor is discharged after reaching the standard.
Referring to fig. 1, an embodiment of the present invention further provides a kitchen waste rapid processing method, and the kitchen waste rapid processing apparatus according to the present invention includes the following steps:
pretreatment unit, oxidation unit, dehydration unit, composting unit and odor treatment unit
The kitchen waste enters a screening pretreatment unit of the treatment equipment through a feed hopper for screening treatment, and the kitchen waste is screened to obtain a kitchen waste clean material;
the kitchen waste clean material enters an oxidation unit of the treatment equipment, is indirectly heated to 150-300 ℃, is introduced with oxygen and/or compressed air to increase the pressure to 0.5-5 MPa, is oxidized by a wet oxidation method for 0.5-2 hours to decompose macromolecular organic matters in the kitchen waste into micromolecular substances and kill harmful germs; before the pressure is released to normal pressure, the oxidized materials are output to the dehydration unit for processing; the odor generated in the oxidation process is output to an odor treatment unit of the treatment equipment for deodorization and then is discharged;
the dehydration unit carries out solid-liquid separation treatment on the input oxidized material, the separated liquid rich in various nutrient elements is output and diluted to be applied as liquid fertilizer, and the separated solid substance is conveyed to the composting unit for composting treatment;
and adding an aerobic microbial inoculum into the composting unit, mixing the aerobic microbial inoculum with the input solid matter, indirectly heating to 50-65 ℃ for aerobic composting for 1-2 days, outputting the obtained solid matter after composting as nutrient soil, and conveying odor generated in the composting process to the odor treatment unit for deodorization and then discharging.
The method further comprises the following steps: an oxidizing agent is added to the oxidation unit to facilitate the reaction. Preferably, the oxidant is air, oxygen, H2O2One or more of the above-mentioned solvents can be added simultaneously.
In the method, the specific temperature, pressure and time can be adjusted according to actual conditions.
The treatment equipment and the treatment method can degrade the kitchen waste by a wet oxidation method, carry out composting by aerobic composting, rapidly treat the kitchen waste to obtain the liquid fertilizer and the nutrient soil which are convenient for resource utilization, and have no odor discharge and no secondary pollution in the treatment process.
The embodiments of the present invention are described in further detail below.
The embodiment of the invention provides kitchen waste rapid treatment equipment, which comprises: the device comprises a pretreatment unit, an oxidation unit, a dehydration unit and a composting unit which are sequentially connected, wherein an odor outlet and an odor outlet of the oxidation unit and the composting unit are respectively connected with an odor treatment unit.
When this treatment facility handles rubbish from cooking, carry out crushing screening edulcoration, specifically be with rubbish from cooking with sealed drum sieve at the preprocessing unit: kitchen waste enters a sealed rotary screen through a feed hopper, a main body of the sealed rotary screen is a screening cylinder consisting of a plurality of circular screen meshes, the whole body and the ground plane form an inclination angle of about 5 degrees, and the outside of the sealed rotary screen is sealed by a sealed isolation cover so as to prevent the environment from being polluted; the screening cylinder is rotated at a certain rotating speed through the speed changing system, materials are separated through the screening cylinder from top to bottom, the kitchen waste clean materials are discharged from the lower part of the front end of the screening cylinder, and impurities are discharged from the tail part of the lower end of the screening cylinder, so that the purpose of removing the impurities is achieved;
the purified kitchen waste is conveyed to an oxidation unit through a first screw conveyor, a first heating device indirectly heats the purified kitchen waste in an oxidation reactor, the first heating device indirectly heats a heat conduction oil outer coil pipe through electric heating, and the temperature of the heat conduction oil is controlled by controlling the electric heating power; indirectly heating the material to about 150-300 ℃ by a first heating device, simultaneously opening an air inlet valve of the oxidation reactor, introducing oxygen and/or compressed air to increase the pressure in the oxidation reactor to 0.5-5 MPa, and simultaneously adding an oxidant to promote the reaction, wherein the oxidant adopts H2O2Or other oxidizing agents; under the conditions of the temperature, the pressure and the existence of an oxidant, the materials are subjected to wet oxidation reaction for 0.5-2 hours by adopting a wet oxidation method, macromolecular organic matters in the kitchen waste are decomposed into micromolecular substances, harmful germs are killed, the solid reduction rate reaches about 40-80%, and the harmful germs are killed, so that the purposes of reduction and stabilization are achieved;
and opening a pressure relief valve of the oxidation reactor to relieve pressure to normal pressure, conveying the material to a plate-and-frame filter press of the dehydration unit through a second screw conveyor of the dehydration unit to perform solid-liquid separation, wherein the separated liquid is rich in various nutrient elements such as nitrogen, phosphorus, amino acid and the like, and can be applied as a liquid fertilizer after being diluted.
Conveying the solid matters obtained by the separation of the dehydration unit to a composting reactor of the composting unit through a third screw conveyor, opening a feeding valve positioned at the upper end of the composting reactor, adding a certain amount of aerobic microbial inoculum with a certain concentration by adopting a metering pump, discontinuously stirring the materials by an electric stirrer, indirectly heating the composting materials in the composting reactor by using a second heating device, keeping the temperature of the composting materials at 50-65 ℃ for aerobic composting for 1-2 days, discharging the composted solid materials through a screw discharging machine, and using the generated solid materials as nutrient soil for landscaping;
the odor generated by the oxidation reactor and the composting reactor is conveyed to an odor treatment unit by a negative pressure device, and the odor treatment unit adopts filling activated carbon and laying natural clinoptilolite loaded TiO in layers2The deodorizer of the photocatalyst deodorizes under the irradiation of the ultraviolet light source, and the gas reaching the standard is discharged into the atmosphere, so that no pollutant is discharged into the environment in the whole treatment process of the treatment equipment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A kitchen waste rapid treatment device is characterized by comprising:
the device comprises a screening pretreatment unit, an oxidation unit, a dehydration unit, a composting unit and an odor treatment unit; wherein the content of the first and second substances,
the screening pretreatment unit is respectively provided with a kitchen waste feed hopper and a kitchen waste purifying outlet, and the kitchen waste purifying outlet is connected with the oxidation unit;
the oxidation unit is respectively provided with a solid material outlet and a waste gas outlet, and the solid material outlet is connected with the dehydration unit;
the dehydration unit is respectively provided with a solid material outlet and a liquid material outlet;
the solid material outlet of the dehydration unit is connected with the composting unit;
the composting unit is respectively provided with an aerobic microbial inoculum feeding port, a waste gas discharge port and a nutrient soil outlet;
the waste gas outlet of the oxidation unit and the waste gas outlet of the composting unit are both connected with the odor treatment unit, and the odor treatment unit is provided with a treated waste gas outlet.
2. The kitchen waste rapid treatment apparatus according to claim 1, wherein said sieving pretreatment unit comprises:
the sealed rotary screen and the first spiral conveyor are connected in sequence; wherein the content of the first and second substances,
the sealed drum screen is provided with the kitchen waste feeding hopper;
and the tail end discharge end of the first spiral conveyor is used as the discharge hole and connected with the oxidation unit.
3. The kitchen waste rapid treatment apparatus according to claim 1 or 2, wherein said oxidation unit comprises:
an oxidation reactor and a first heating device; wherein the content of the first and second substances,
the oxidation reactor is provided with a material inlet, a solid material outlet and a waste gas outlet respectively, the material inlet is connected with the pretreatment unit, and the solid material outlet is connected with the dehydration unit;
the first heating device is arranged on the oxidation reactor.
4. The kitchen waste rapid treatment apparatus according to claim 3, wherein said oxidation reactor further comprises: an oxidant addition port;
the first heating device adopts an electrically heated heat-conducting oil external coil indirect heating device, and is coiled on the oxidation reactor.
5. The kitchen waste rapid treatment apparatus according to claim 1 or 2, wherein said dehydration unit comprises:
the second screw conveyor, the plate-and-frame filter press and the third screw conveyor are connected in sequence; wherein the content of the first and second substances,
the plate-and-frame filter press is provided with the liquid material outlet;
and the discharge end of the third screw conveyor is used as the solid material outlet.
6. The kitchen waste rapid treatment apparatus according to claim 1 or 2, wherein said composting unit comprises:
the composting reactor, the second heating device and the spiral discharging machine; wherein the content of the first and second substances,
the composting reactor is provided with a solid material inlet, the aerobic microbial inoculum feeding port, a waste gas outlet and a material outlet respectively, the solid material inlet is connected with the dehydration unit, the material outlet is connected with the spiral discharging machine, and the discharging end of the spiral discharging machine is used as the nutrient soil outlet;
the second heating device is disposed on the composting reactor.
7. The kitchen waste rapid treatment equipment according to claim 6, wherein the second heating device is an indirect heating device of an electrically heated conduction oil outer coil pipe, and the coil is arranged on the composting reactor.
8. The kitchen garbage rapid treatment equipment according to claim 1 or 2, wherein the odor treatment unit adopts a deodorizer, the deodorizer body is provided with an air inlet at the bottom and an air outlet at the top, and an activated carbon layer and a plurality of layers of load TiO are sequentially arranged in the deodorizer body from the air inlet to the air outlet2The natural clinoptilolite layer of photocatalyst, it has a plurality of ultraviolet lamps to distribute in the deodorizer body around the natural clinoptilolite layer.
9. A method for rapidly treating kitchen waste, which is characterized in that the kitchen waste rapid treatment equipment of any one of claims 1 to 8 is adopted, and comprises the following steps:
pretreatment unit, oxidation unit, dehydration unit, composting unit and odor treatment unit
The kitchen waste enters a screening pretreatment unit of the treatment equipment through a feed hopper for screening treatment, and the kitchen waste is screened to obtain a kitchen waste clean material;
the kitchen waste clean material enters an oxidation unit of the treatment equipment, is indirectly heated to 150-300 ℃, is introduced with oxygen and/or compressed air to increase the pressure to 0.5-5 MPa, is oxidized by a wet oxidation method for 0.5-2 hours to decompose macromolecular organic matters in the kitchen waste into micromolecular substances and kill harmful germs; before the pressure is released to normal pressure, the oxidized materials are output to the dehydration unit for processing; the odor generated in the oxidation process is output to an odor treatment unit of the treatment equipment for deodorization and then is discharged;
the dehydration unit carries out solid-liquid separation treatment on the input oxidized material, the separated liquid rich in various nutrient elements is output and diluted to be applied as liquid fertilizer, and the separated solid substance is conveyed to the composting unit for composting treatment;
and adding an aerobic microbial inoculum into the composting unit, mixing the aerobic microbial inoculum with the input solid matter, indirectly heating to 50-65 ℃ for aerobic composting for 1-2 days, outputting the obtained solid matter after composting as nutrient soil, and conveying odor generated in the composting process to the odor treatment unit for deodorization and then discharging.
10. The kitchen waste rapid treatment method according to claim 9, further comprising: an oxidizing agent is added to the oxidation unit.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113896585A (en) * | 2021-10-19 | 2022-01-07 | 北京誉铧生物科技有限公司 | Process system for rapidly preparing livestock and poultry manure organic fertilizer by using biological enzyme |
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| CN101758059A (en) * | 2009-12-24 | 2010-06-30 | 华南农业大学 | Garbage and sludge high pressure themolysis processing method, system and application thereof |
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