CN111233528A - Kitchen waste aerobic fermentation system and technology - Google Patents
Kitchen waste aerobic fermentation system and technology Download PDFInfo
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- CN111233528A CN111233528A CN202010179070.3A CN202010179070A CN111233528A CN 111233528 A CN111233528 A CN 111233528A CN 202010179070 A CN202010179070 A CN 202010179070A CN 111233528 A CN111233528 A CN 111233528A
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention relates to a kitchen waste aerobic fermentation system and a kitchen waste aerobic fermentation process. The aerobic fermentation system sequentially comprises the following components according to a treatment route: weighing and sorting device, crusher, cooking pot, three-phase separation device and oxygen-generating fermentation bin. An aerobic fermentation process: weighing, sorting, crushing, cooking and three-phase separation; aerobic fermentation of solid residues, oil collection and wastewater treatment; treating waste gas of aerobic fermentation; the products of the aerobic fermentation are collected as fertilizer. According to the aerobic fermentation system and process for the kitchen waste, disclosed by the invention, the grease precipitation amount of the kitchen waste is increased, the three-phase separation effect is improved, and the requirement on subsequent treatment equipment is lowered; the heat loss is greatly reduced, and the energy-saving effect is good; the process flow of aerobic fermentation is perfected, so that the whole system and process are harmless, and the influence on the environment is reduced; the separated grease is collected, and the solid-liquid mixture fermented by the aerobic fermentation bin is used as a fertilizer, so that economic benefits can be generated, the resource reutilization can be maximized, and the kitchen waste treatment cost can be reduced.
Description
Technical Field
The invention relates to the field of kitchen waste treatment, in particular to a kitchen waste aerobic fermentation system and a kitchen waste aerobic fermentation process.
Background
The kitchen waste refers to food processing leftovers (kitchen waste) and edible residues generated in catering industry and resident life, and the essential components comprise organic components such as protein, starch, grease and the like, and the kitchen waste has the characteristics of high water content, high grease and salt content, easiness in rotting and smelling and the like. Kitchen waste generated in China cities is not less than 6000 million tons every year, the yield of kitchen waste in large and medium-sized cities is remarkable, and the problem of developed cities in catering industries such as Chongqing, Beijing, Guangzhou and the like is particularly serious.
At present, the treatment technology of the kitchen waste mainly comprises anaerobic digestion, feed conversion, a kitchen grinder, aerobic composting, small-sized biochemical on-site treatment equipment and the like. The anaerobic digestion process is mainly divided into 3 stages of front-end pretreatment sorting, middle-end anaerobic digestion biogas production and rear-end biogas resource utilization; the feed conversion refers to that kitchen waste is used for feeding livestock and poultry, particularly for feeding pigs, but under the outbreak of African swine fever, the kitchen waste feed conversion is strictly controlled in various places; the kitchen grinder is a small machine placed at the communication position of a kitchen sink and a pipeline, and drives a turntable in a grinding cavity by a high-speed rotating motor, so that kitchen waste is impacted with each other under the action of centrifugal force, and food waste is ground into fine particles in a very short time and flows along a water flow discharge pipeline. The aerobic composting process mainly comprises the following steps: firstly, crushing and sorting the kitchen waste, removing sundries which are not suitable for composting, and carrying out compression dehydration treatment; then adding auxiliary additives required by composting into the material distribution box, and carrying out aerobic composting treatment for 50-70 days. The small biochemical in-situ treatment equipment has the same principle as aerobic composting, is assisted by heating, and has the fermentation temperature of 50-70 ℃ and rapid fermentation.
The anaerobic digestion process has high starting scale and long digestion period, and is difficult to utilize because the biogas product is impure; the digested biogas residues are basically buried, and a good utilization plan for products is not provided, so that the overall effect is poor. Feed conversion is gradually banned by problems such as food homology. The broken kitchen waste directly enters a sewer pipeline to easily cause pipeline blockage, and meanwhile, the existing municipal sewage pipe network has no capability of accommodating the broken kitchen waste, so that the process is not suitable for domestic pipeline conditions. The aerobic compost occupies a large area and has a long period. The sewage and odor generated in the composting process can cause secondary pollution to the surrounding environment. The small-sized biochemical in-situ processor can not efficiently separate the grease in the kitchen waste due to dehydration and oil-water separation in the pretreatment, and the high content of grease and salt are not beneficial to the growth of microorganisms, so that the processing effect of the processor is restricted. In addition, the generated waste water and waste gas are directly discharged without treatment, which is easy to cause secondary pollution; the heating module also makes the equipment energy consumption higher.
Disclosure of Invention
In order to solve the technical problems, the invention provides the aerobic fermentation system and the aerobic fermentation process for the kitchen waste, wherein a cooking and three-phase separation mode is adopted, so that the oil precipitation amount of the kitchen waste is improved, the three-phase separation effect is improved, the requirement on subsequent treatment equipment is lowered, the treatment is complete, and the influence on the environment is reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows: an aerobic fermentation system for kitchen waste sequentially comprises a weighing and sorting device, a crusher, a cooking pot, a three-phase separation device and an oxygen-generating fermentation bin according to a treatment route; the weighing and sorting device is used for weighing and sorting the kitchen waste; the crusher is used for receiving the kitchen waste sorted by the weighing and sorting device and crushing the kitchen waste; the cooking pot is used for heating, cooking and crushing the kitchen waste; the three-phase separation device is used for separating solid residues, waste water and grease from the heated and cooked kitchen waste; the aerobic fermentation bin is used for receiving the solid residues and carrying out aerobic fermentation.
Furthermore, the aerobic fermentation system also comprises a grease collecting bin for collecting grease separated by the three-phase separating device.
Furthermore, the aerobic fermentation system also comprises a fertilizer collecting bin for collecting the solid-liquid mixture fermented by the aerobic fermentation bin.
Furthermore, the aerobic fermentation system also comprises a waste gas treatment device for treating waste gas discharged from the aerobic fermentation bin.
Furthermore, an ultraviolet lamp and an active carbon filtering device are arranged in the waste gas treatment device and are used for degrading, deodorizing and sterilizing waste gas.
Further, a heat exchanger is arranged between the waste gas treatment device and the aerobic fermentation bin; the heat exchanger has an air passage and an exhaust gas passage; one end of the air channel is communicated with an air inlet of the aerobic fermentation bin, one end of the waste gas channel is communicated with a waste gas outlet of the aerobic fermentation bin, and the other end of the waste gas channel is communicated with a waste gas inlet of the waste gas treatment device; the heat exchanger is used for enabling hot waste gas received in the waste gas channel to exchange heat with fresh cold air received by the air channel so as to reduce heat loss of the aerobic fermentation bin.
Furthermore, the aerobic fermentation system also comprises a wastewater collection bin and a wastewater treatment device; and the wastewater collection bin is used for collecting wastewater separated by the three-phase separation device and treating the wastewater by the wastewater treatment device.
Furthermore, the heat exchanger is also provided with a condensate water outlet, is communicated with the wastewater collection bin and is used for discharging condensate water generated after the waste gas channel is condensed into the wastewater collection bin and then entering the wastewater treatment device together.
Further, the wastewater treatment device comprises an adjusting tank, an air flotation tank, a primary denitrification reactor, a primary nitrification reactor, a secondary denitrification reactor, a secondary nitrification reactor and an ultrafiltration system which are sequentially communicated through pipelines according to a treatment route; the adjusting tank is used for receiving the wastewater in the wastewater collecting bin and adjusting the water quality; the air floatation tank is used for receiving the wastewater regulated by the regulating tank and performing air floatation deslagging; the external MBR system is composed of the first-stage denitrification reactor, the first-stage nitrification reactor, the second-stage denitrification reactor, the second-stage nitrification reactor and the ultrafiltration system and is used for carrying out two-stage nitrification and denitrification and ultrafiltration on the wastewater so that the treated water reaches the discharge standard; the primary denitrification reactor is also provided with a mixed liquid backflow inlet, a sludge backflow inlet and a first sludge discharge port; the first-stage nitration reactor is also provided with a mixed liquid reflux outlet and is communicated with a mixed liquid reflux inlet of the first-stage denitrification reactor; the ultrafiltration device is also provided with a sludge return outlet and is communicated with a sludge return inlet of the primary denitrification reactor; the ultrafiltration device is also provided with a second sludge discharge port for discharging sludge together with the first sludge discharge port of the primary denitrification reactor; the ultrafiltration device is also provided with a treated water discharge port for discharging water meeting the standard.
An aerobic fermentation process for kitchen waste specifically comprises the following steps:
firstly, collecting kitchen waste, weighing and sorting the kitchen waste, and removing impurities such as ceramic, metal blocks, glass and the like; secondly, crushing the kitchen waste treated in the first step, and crushing and separating large materials in the kitchen waste; thirdly, adding the kitchen waste treated in the second step into a cooking pot, and heating for 20-30 minutes at 85-90 ℃; fourthly, three-phase separation is carried out on the kitchen waste treated in the third step, and solid residue, waste water and grease are separated; collecting the grease; fifthly, adding the solid residues obtained by the fourth treatment into an aerobic fermentation bin, adding an aerobic fermentation microbial inoculum, carrying out aerobic fermentation at 55-70 ℃, exchanging heat between hot waste gas generated by fermentation and fresh air through a heat exchanger, introducing the heated air into the aerobic fermentation bin, introducing the waste gas after heat exchange into a waste gas treatment system, carrying out waste gas treatment, and then discharging; collecting the solid-liquid mixture after the completion of the aerobic fermentation as a fertilizer; sixthly, the wastewater obtained by the treatment in the third step and condensed water generated in the heat exchange of the waste gas in the fifth step enter a wastewater collection bin together for collection; and seventhly, treating the wastewater collected by the wastewater collection bin by a wastewater treatment device to reach the standard and then discharging the wastewater.
The invention has the advantages that: according to the aerobic fermentation system and process for the kitchen waste, a three-phase separation mode is adopted after cooking, so that the oil precipitation amount of the kitchen waste is increased, the three-phase separation effect is improved, and the requirement on subsequent treatment equipment is lowered; the heat exchanger is adopted to exchange heat between the hot waste gas generated by aerobic fermentation and fresh air, so that heat loss can be greatly reduced, and a good energy-saving effect is achieved; the waste water generated in the process is collected and treated by a waste water treatment device, and the generated waste gas is treated by a waste gas treatment device, so that the process flow of aerobic fermentation is perfected, the whole system and process are harmless, and the influence on the environment is reduced; the separated grease is collected, and the solid-liquid mixture fermented by the aerobic fermentation bin is used as a fertilizer, so that economic benefits can be generated, the resource reutilization can be maximized, and the kitchen waste treatment cost can be reduced.
Drawings
FIG. 1 is a schematic diagram of an aerobic fermentation system for kitchen waste according to an embodiment;
FIG. 2 is a schematic view of a wastewater treatment device in an aerobic fermentation system for kitchen waste according to an embodiment.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
Examples
As shown in fig. 1, the embodiment provides an aerobic fermentation system for kitchen waste, which sequentially comprises a weighing and sorting device, a crusher, a cooking pot, a three-phase separation device and an oxygen-generating fermentation bin according to a treatment route; the weighing and sorting device is used for weighing and sorting the kitchen waste; the crusher is used for receiving the kitchen waste sorted by the weighing and sorting device and crushing the kitchen waste; the cooking pot is used for heating, cooking and crushing the kitchen waste; the three-phase separation device is used for separating solid residues, waste water and grease from the heated and cooked kitchen waste; the aerobic fermentation bin is used for receiving the solid residues and carrying out aerobic fermentation.
In the aerobic fermentation system for kitchen waste of this embodiment, the aerobic fermentation system further comprises a grease collecting bin for collecting grease separated by the three-phase separating device.
In the aerobic fermentation system for kitchen waste of this embodiment, the aerobic fermentation system further comprises a fertilizer collection bin for collecting a solid-liquid mixture after fermentation in the aerobic fermentation bin.
In the aerobic fermentation system for kitchen waste of the embodiment, the aerobic fermentation system further comprises a waste gas treatment device for treating waste gas discharged from the aerobic fermentation bin; an ultraviolet lamp and an active carbon filtering device are arranged in the waste gas treatment device, and pollution molecules in waste gas and oxygen molecules in air are cracked through irradiation of high-energy ultraviolet light beams; the free oxygen carries an imbalance of positive and negative electrons and needs to be combined with oxygen molecules to produce ozone. Ozone has strong oxidation effect on the polluted molecules after ultraviolet light beam irradiation cracking, so that the polluted molecules are converted into low molecular compounds, water and carbon dioxide, the purposes of deodorizing and killing bacteria are thoroughly achieved, the active carbon in the system is used for adsorbing and removing malodorous gases, and the finely processed waste gas can be directly discharged.
In the aerobic fermentation system for kitchen waste of the embodiment, a heat exchanger is further arranged between the waste gas treatment device and the aerobic fermentation bin; the heat exchanger has an air passage and an exhaust gas passage; one end of the air channel is communicated with an air inlet of the aerobic fermentation bin, one end of the waste gas channel is communicated with a waste gas outlet of the aerobic fermentation bin, and the other end of the waste gas channel is communicated with a waste gas inlet of the waste gas treatment device; the heat exchanger is used for enabling hot waste gas received in the waste gas channel to exchange heat with fresh cold air received by the air channel so as to reduce heat loss of the aerobic fermentation bin; the heat exchanger is also provided with a condensed water outlet, is communicated with the waste water collecting bin and is used for discharging condensed water generated after the waste gas channel is condensed into the waste water collecting bin and then entering the waste water treatment device together.
In the aerobic fermentation system for kitchen waste of the embodiment, the aerobic fermentation system further comprises a waste water collecting bin and a waste water treatment device; and the wastewater collection bin is used for collecting wastewater separated by the three-phase separation device and treating the wastewater by the wastewater treatment device.
In the aerobic fermentation system for kitchen waste, the wastewater treatment device comprises an adjusting tank, an air flotation tank, a primary denitrification reactor, a primary nitrification reactor, a secondary denitrification reactor, a secondary nitrification reactor and an ultrafiltration system which are sequentially communicated through pipelines according to a treatment route; the adjusting tank is used for receiving the wastewater in the wastewater collecting bin and adjusting the water quality; the air floatation tank is used for receiving the wastewater regulated by the regulating tank and performing air floatation deslagging; the external MBR system is composed of the primary denitrification reactor, the primary nitrification reactor, the secondary denitrification reactor, the secondary nitrification reactor and the ultrafiltration system and is used for carrying out two-stage nitrification and denitrification and ultrafiltration on the wastewater, effectively removing pollutants such as COD (chemical oxygen demand), BOD (biochemical oxygen demand), ammonia nitrogen and the like, and enabling the treated water to reach the discharge standard; the primary denitrification reactor is also provided with a mixed liquid backflow inlet, a sludge backflow inlet and a first sludge discharge port; the first-stage nitration reactor is also provided with a mixed liquid reflux outlet and is communicated with a mixed liquid reflux inlet of the first-stage denitrification reactor; the ultrafiltration device is also provided with a sludge return outlet and is communicated with a sludge return inlet of the primary denitrification reactor; the ultrafiltration device is also provided with a second sludge discharge port for discharging sludge together with the first sludge discharge port of the primary denitrification reactor; the ultrafiltration device is also provided with a treated water discharge port for discharging water meeting the standard.
The embodiment provides an aerobic fermentation process for kitchen waste, which specifically comprises the following steps:
firstly, collecting kitchen waste, weighing and sorting the kitchen waste, and removing impurities such as ceramic, metal blocks, glass and the like; secondly, crushing the kitchen waste treated in the first step, and crushing and separating large materials in the kitchen waste; thirdly, adding the kitchen waste treated in the second step into a cooking pot, and heating for 20-30 minutes at 85-90 ℃; fourthly, three-phase separation is carried out on the kitchen waste treated in the third step, and solid residue, waste water and grease are separated; collecting the grease; fifthly, adding the solid residues obtained by the fourth treatment into an aerobic fermentation bin, adding an aerobic fermentation microbial inoculum, carrying out aerobic fermentation at 55-70 ℃, exchanging heat between hot waste gas generated by fermentation and fresh air through a heat exchanger, introducing the heated air into the aerobic fermentation bin, introducing the waste gas after heat exchange into a waste gas treatment system, carrying out waste gas treatment, and then discharging; collecting the solid-liquid mixture after the completion of the aerobic fermentation as a fertilizer; sixthly, the wastewater obtained by the treatment in the third step and condensed water generated in the heat exchange of the waste gas in the fifth step enter a wastewater collection bin together for collection; and seventhly, treating the wastewater collected by the wastewater collection bin by a wastewater treatment device to reach the standard and then discharging the wastewater.
According to the aerobic fermentation system and process for the kitchen waste, a three-phase separation mode is adopted after cooking, so that the oil precipitation amount of the kitchen waste is increased, the three-phase separation effect is improved, and the requirement on subsequent treatment equipment is lowered; the heat exchanger is adopted to exchange heat between the hot waste gas generated by aerobic fermentation and fresh air, so that heat loss can be greatly reduced, and a good energy-saving effect is achieved; the waste water generated in the process is collected and treated by a waste water treatment device, and the generated waste gas is treated by a waste gas treatment device, so that the process flow of aerobic fermentation is perfected, the whole system and process are harmless, and the influence on the environment is reduced; the separated grease is collected, and the solid-liquid mixture fermented by the aerobic fermentation bin is used as a fertilizer, so that economic benefits can be generated, the resource reutilization can be maximized, and the kitchen waste treatment cost can be reduced.
The above embodiments should not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent transformations fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a kitchen garbage aerobic fermentation system which characterized in that: the device comprises a weighing and sorting device, a crusher, a cooking pot, a three-phase separation device and an oxygen-generating fermentation bin in sequence according to a processing route;
the weighing and sorting device is used for weighing and sorting the kitchen waste;
the crusher is used for receiving the kitchen waste sorted by the weighing and sorting device and crushing the kitchen waste;
the cooking pot is used for heating, cooking and crushing the kitchen waste;
the three-phase separation device is used for separating solid residues, waste water and grease from the heated and cooked kitchen waste;
the aerobic fermentation bin is used for receiving the solid residues and carrying out aerobic fermentation.
2. The aerobic fermentation system for kitchen waste according to claim 1, characterized in that: the aerobic fermentation system also comprises a grease collecting bin for collecting grease separated by the three-phase separating device.
3. The aerobic fermentation system for kitchen waste according to claim 1, characterized in that: the aerobic fermentation system also comprises a fertilizer collecting bin for collecting the solid-liquid mixture fermented by the aerobic fermentation bin.
4. The aerobic fermentation system for kitchen waste according to claim 1, characterized in that: the aerobic fermentation system also comprises a waste gas treatment device for treating waste gas discharged from the aerobic fermentation bin.
5. The aerobic fermentation system for kitchen waste according to claim 4, characterized in that: and an ultraviolet lamp and an active carbon filtering device are arranged in the waste gas treatment device and are used for degrading, deodorizing and sterilizing waste gas.
6. The aerobic fermentation system for kitchen waste according to claim 4, characterized in that: a heat exchanger is also arranged between the waste gas treatment device and the aerobic fermentation bin; the heat exchanger has an air passage and an exhaust gas passage; one end of the air channel is communicated with an air inlet of the aerobic fermentation bin, one end of the waste gas channel is communicated with a waste gas outlet of the aerobic fermentation bin, and the other end of the waste gas channel is communicated with a waste gas inlet of the waste gas treatment device; the heat exchanger is used for enabling hot waste gas received in the waste gas channel to exchange heat with fresh cold air received by the air channel so as to reduce heat loss of the aerobic fermentation bin.
7. The aerobic fermentation system for kitchen waste according to claim 6, characterized in that: the aerobic fermentation system also comprises a wastewater collection bin and a wastewater treatment device; and the wastewater collection bin is used for collecting wastewater separated by the three-phase separation device and treating the wastewater by the wastewater treatment device.
8. The aerobic fermentation system for kitchen waste according to claim 7, characterized in that: the heat exchanger is also provided with a condensed water outlet, is communicated with the waste water collecting bin and is used for discharging condensed water generated after the waste gas channel is condensed into the waste water collecting bin and then entering the waste water treatment device together.
9. The aerobic fermentation system for kitchen waste according to claim 7 or 8, characterized in that: the wastewater treatment device comprises a regulating tank, an air flotation tank, a primary denitrification reactor, a primary nitrification reactor, a secondary denitrification reactor, a secondary nitrification reactor and an ultrafiltration system which are sequentially communicated through pipelines according to a treatment route;
the adjusting tank is used for receiving the wastewater in the wastewater collecting bin and adjusting the water quality;
the air floatation tank is used for receiving the wastewater regulated by the regulating tank and performing air floatation deslagging;
the external MBR system is composed of the first-stage denitrification reactor, the first-stage nitrification reactor, the second-stage denitrification reactor, the second-stage nitrification reactor and the ultrafiltration system and is used for carrying out two-stage nitrification and denitrification and ultrafiltration on the wastewater so that the treated water reaches the discharge standard;
the primary denitrification reactor is also provided with a mixed liquid backflow inlet, a sludge backflow inlet and a first sludge discharge port; the first-stage nitration reactor is also provided with a mixed liquid reflux outlet and is communicated with a mixed liquid reflux inlet of the first-stage denitrification reactor; the ultrafiltration device is also provided with a sludge return outlet and is communicated with a sludge return inlet of the primary denitrification reactor; the ultrafiltration device is also provided with a second sludge discharge port for discharging sludge together with the first sludge discharge port of the primary denitrification reactor; the ultrafiltration device is also provided with a treated water discharge port for discharging water meeting the standard.
10. The aerobic fermentation process of the kitchen waste is characterized by comprising the following steps: the method comprises the following steps:
firstly, collecting kitchen waste, weighing and sorting the kitchen waste, and removing impurities such as ceramic, metal blocks, glass and the like;
secondly, crushing the kitchen waste treated in the first step, and crushing and separating large materials in the kitchen waste;
thirdly, adding the kitchen waste treated in the second step into a cooking pot, and heating for 20-30 minutes at 85-90 ℃;
fourthly, three-phase separation is carried out on the kitchen waste treated in the third step, and solid residue, waste water and grease are separated; collecting the grease;
fifthly, adding the solid residues obtained by the fourth treatment into an aerobic fermentation bin, adding an aerobic fermentation microbial inoculum, carrying out aerobic fermentation at 55-70 ℃, exchanging heat between hot waste gas generated by fermentation and fresh air through a heat exchanger, introducing the heated air into the aerobic fermentation bin, introducing the waste gas after heat exchange into a waste gas treatment system, carrying out waste gas treatment, and then discharging; collecting the solid-liquid mixture after the completion of the aerobic fermentation as a fertilizer;
sixthly, the wastewater obtained by the treatment in the third step and condensed water generated in the heat exchange of the waste gas in the fifth step enter a wastewater collection bin together for collection;
and seventhly, treating the wastewater collected by the wastewater collection bin by a wastewater treatment device to reach the standard and then discharging the wastewater.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111548205A (en) * | 2020-05-13 | 2020-08-18 | 江苏万萃环保科技有限公司 | Organic garbage degradation bacterial fertilizer |
| CN112007942B (en) * | 2020-10-19 | 2021-01-01 | 四川北控聚慧物联网科技有限公司 | Kitchen waste treatment automatic control method based on industrial Internet of things |
| CN113290018A (en) * | 2021-03-10 | 2021-08-24 | 王�锋 | Kitchen waste treatment method and system |
| CN113798308A (en) * | 2021-09-17 | 2021-12-17 | 河南玉霖致景环保科技有限公司 | Kitchen waste treatment process |
| CN115140890A (en) * | 2022-06-27 | 2022-10-04 | 华沃德源环境技术(济南)有限公司 | Kitchen waste pretreatment method |
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| CN208436659U (en) * | 2018-05-18 | 2019-01-29 | 成都大祺智科节能环保设备有限公司 | A kind of photocatalytic waste gas treatment device |
| CN109467266A (en) * | 2018-11-29 | 2019-03-15 | 长沙凯天工研院环保服务有限公司 | A kind of changing food waste into resources treatment process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104030738A (en) * | 2013-03-05 | 2014-09-10 | 习建华 | Resource-based and harmless treatment method for kitchen waste |
| CN208436659U (en) * | 2018-05-18 | 2019-01-29 | 成都大祺智科节能环保设备有限公司 | A kind of photocatalytic waste gas treatment device |
| CN109467266A (en) * | 2018-11-29 | 2019-03-15 | 长沙凯天工研院环保服务有限公司 | A kind of changing food waste into resources treatment process |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111548205A (en) * | 2020-05-13 | 2020-08-18 | 江苏万萃环保科技有限公司 | Organic garbage degradation bacterial fertilizer |
| CN112007942B (en) * | 2020-10-19 | 2021-01-01 | 四川北控聚慧物联网科技有限公司 | Kitchen waste treatment automatic control method based on industrial Internet of things |
| CN113290018A (en) * | 2021-03-10 | 2021-08-24 | 王�锋 | Kitchen waste treatment method and system |
| CN113798308A (en) * | 2021-09-17 | 2021-12-17 | 河南玉霖致景环保科技有限公司 | Kitchen waste treatment process |
| CN115140890A (en) * | 2022-06-27 | 2022-10-04 | 华沃德源环境技术(济南)有限公司 | Kitchen waste pretreatment method |
| CN115140890B (en) * | 2022-06-27 | 2024-03-15 | 华沃德源环境技术(济南)有限公司 | Kitchen waste pretreatment method |
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