CN109365492B - Quick degradation cycle recycle system of kitchen garbage - Google Patents

Quick degradation cycle recycle system of kitchen garbage Download PDF

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Publication number
CN109365492B
CN109365492B CN201811502603.6A CN201811502603A CN109365492B CN 109365492 B CN109365492 B CN 109365492B CN 201811502603 A CN201811502603 A CN 201811502603A CN 109365492 B CN109365492 B CN 109365492B
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subsystem
kitchen waste
feeding
kitchen
particles
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CN109365492A (en
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孟行健
王玉峰
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Anhui Tianjian Environmental Protection Co ltd
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Anhui Tianjian Environmental Protection Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B2101/00Type of solid waste
    • B09B2101/02Gases or liquids enclosed in discarded articles, e.g. aerosol cans or cooling systems of refrigerators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/14Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/16Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18Radiation
    • A61L9/20Ultra-violet radiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE
    • B09B5/00Operations not covered by a single other subclass or by a single other group in this subclass
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104Devices therefor; Their operating or servicing
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes

Abstract

The invention discloses a rapid degradation and recycling system for kitchen waste, which comprises an automatic feeding subsystem, a sorting subsystem, a crushing subsystem, a blending and dewatering subsystem, a biodegradation subsystem, an oil-water separation subsystem, a deodorization and sterilization subsystem and a detection system. The sorting subsystem is used for sorting and separating the household garbage and the percolate in the kitchen garbage. The crushing subsystem is used for crushing the household garbage into particles with the diameter of 10-30 mm. The blending dehydration subsystem is used for blending the particles and extruding and dehydrating the blended particles. The biodegradation subsystem is used for carrying out biodegradation on the kitchen waste in the extruded and dehydrated particles. The oil-water separation subsystem is used for receiving leachate, dilution water generated by crushing of the crushing subsystem and mixed liquid formed by mixing liquid generated by extrusion and dehydration of the blending dehydration subsystem, separating the mixed liquid from oil, and separating to obtain standard wastewater and grease. The invention can make full use of the residual value of the kitchen waste.

Description

Quick degradation cycle recycle system of kitchen garbage
Technical Field
The invention relates to a kitchen waste treatment system in the technical field of kitchen waste treatment, in particular to a kitchen waste rapid degradation recycling system.
Background
The kitchen waste is the main part of daily life waste, and accounts for more than 60-80% of the urban life waste. Because the food waste is easy to decay, the breeding and the foul smell of mosquitoes and flies in the landfill are caused, the pollution to the atmosphere and water is difficult to control, and the pollution to the environment and the harm to the public health safety of the contained organic components are increasingly shown.
However, the existing kitchen waste treatment system is a centralized treatment system, the kitchen waste and the household waste are mixed, collected, classified, transported and treated in a centralized manner, and the kitchen waste and other household waste are treated together, so that the recycling value of part of the kitchen waste is wasted.
Disclosure of Invention
Aiming at the technical problem, the invention provides a rapid degradation recycling system for kitchen waste, which solves the problem that the existing kitchen waste treatment system wastes part of recycling value of the kitchen waste.
The invention is realized by adopting the following technical scheme: a kitchen waste rapid degradation recycling system comprises an automatic feeding subsystem, a sorting subsystem, a crushing subsystem, a blending dehydration subsystem, a biodegradation subsystem, an oil-water separation subsystem, a deodorization sterilization subsystem and a detection system;
the automatic feeding subsystem is used for conveying the kitchen waste with the volume reaching a preset volume to the sorting subsystem; the automatic feeding subsystem comprises a garbage collection container, an infrared sensor, a feeding controller and an automatic elevator; the garbage collection container is used for containing the kitchen garbage, and the transmitting end and the receiving end of the infrared sensor are respectively installed on two sides of the top of the garbage collection container; when the kitchen waste reaches the preset volume, the kitchen waste covers a light path between a transmitting end and a receiving end of the infrared sensor, so that the infrared sensor sends a disconnection signal and transmits the disconnection signal to the feeding controller; when the feeding controller receives the disconnection signal, the automatic lifting machine is driven to lift the garbage collection container; the garbage collection container ascends along a preset track, the top of the preset track is provided with an arc-shaped structure, and when the garbage collection container ascends and passes through the arc-shaped structure, the garbage collection container inclines and conveys the kitchen garbage to the sorting subsystem; when the light path between the transmitting end and the receiving end of the infrared sensor is not interrupted for a preset time, the infrared sensor sends a closing signal to the feeding controller, and the feeding controller drives the automatic lifting machine to pull the garbage collection container to descend to the original position;
the sorting subsystem is used for sorting and separating the household garbage and the percolate in the kitchen garbage; the sorting subsystem comprises a spin-drying device and a water content sensor, the spin-drying device is used for spin-drying the kitchen waste by centrifugally rotating the kitchen waste, and the water content sensor is used for detecting the water content of the kitchen waste in the spin-drying device; the sorting subsystem drives the spin-drying device to stop spin-drying when the water content detected by the water content sensor is lower than a preset water content;
the crushing subsystem is used for crushing the household garbage and crushing the household garbage into particles with the diameter of 10-30mm by adding water for dilution;
the blending dehydration subsystem is used for blending the particles and extruding and dehydrating the blended particles to ensure that the water content is between 40 and 60 percent;
microbial degradation bacteria are arranged in the biodegradation subsystem and are used for performing biodegradation on the kitchen waste in the extruded and dehydrated particles and generating an organic fertilizer for recycling; in the biodegradation process, the biodegradation subsystem stirs, heats at constant temperature, ventilates and dries the dehydrated particles;
the oil-water separation subsystem is used for receiving mixed liquid formed by mixing the percolate, dilution water generated by crushing of the crushing subsystem and liquid generated by extrusion and dehydration of the blending and dehydration subsystem, carrying out electrolysis, air flotation, hydrolytic acidification and biochemical process treatment on the mixed liquid to separate the mixed liquid from oil, and separating to obtain standard wastewater and grease;
the deodorization and sterilization subsystem is used for removing malodorous gas generated in the biodegradation subsystem and killing bacteria through high-energy UV light beams;
the detection system is used for detecting the weight of the feeding materials in the automatic feeding subsystem, the temperature and the PH of the kitchen waste in the biodegradation subsystem in real time, and remotely transmitting the weight, the temperature and the PH to a preset kitchen Internet of things monitoring platform.
As a further improvement of the scheme, the detection system comprises a GPS positioning module, the GPS positioning module is used for detecting the position information of the automatic feeding subsystem, and the position information is remotely transmitted to the kitchen Internet of things monitoring platform through a wireless transmission module.
Further, the detection system also comprises a weighing sensor, a temperature sensor and a ph value sensor; the weighing sensor is used for detecting the weight of pan feeding in the automatic pan feeding subsystem, temperature sensor is used for detecting the temperature of the kitchen discarded object in the biodegradable subsystem, the PH value sensor is used for detecting the PH of the kitchen discarded object in the biodegradable subsystem.
Still further, the detection system further comprises a plurality of monitoring probes; the plurality of monitoring probes are used for respectively acquiring image information in the automatic feeding subsystem, the sorting subsystem, the crushing subsystem, the blending and dewatering subsystem, the biodegradation subsystem, the oil-water separation subsystem and the deodorization and sterilization subsystem; the detection system remotely transmits the image information to the kitchen Internet of things monitoring platform through the wireless transmission module.
As a further improvement of the above-described solution,
the automatic feeding subsystem further comprises a storage box, a feeding switch, a conveying belt and a weight detection device;
the number of the storage boxes is multiple, and the storage boxes are respectively arranged in kitchens of multiple users so as to collect kitchen waste of the corresponding users;
the feeding switch is arranged in a feeding opening formed in the bottom or the side surface of the storage box and used for opening or closing the feeding opening, and the feeding opening is communicated with the conveying belt;
the conveying belt is used for conveying the garbage to the garbage collection container;
the weight detection device is used for detecting the weight of the kitchen waste in the storage box and transmitting the detected weight information to the feeding controller;
when the weight detection device detects that the weight of the kitchen waste exceeds a preset kitchen waste weight limit value, the feeding controller opens the feeding switch to enable the kitchen waste in the storage box to be transmitted to the waste collection container through the conveying belt.
As a further improvement of the above scheme, the biodegradation subsystem comprises a biochemical reaction chamber, and the biochemical reaction chamber is used for biodegrading the kitchen waste; the front end of the biochemical reaction chamber is provided with a solid-water-oil biological phase separation and removal structure so as to separate and remove animal and vegetable oil in the extruded and dehydrated particles.
Furthermore, the biochemical reaction cabin is also used for carrying out aerobic fermentation treatment on the extruded and dehydrated particles; the biochemical reaction cabin combines forced ventilation and internal stirring and turning, so that the degradation efficiency of volatile organic matters in the particles reaches more than 70%, and parasites (eggs), pathogenic bacteria and viruses in the particles are inactivated.
As a further improvement of the above scheme, the crushing subsystem comprises a wet crusher, and the wet crusher is used for wet crushing the household garbage;
the mixing and dewatering subsystem comprises a stirrer and a spiral extrusion dewaterer; the mixer is used for mixing the particles in the mixing and dehydrating subsystem, the screw extrusion dehydrator is used for extruding and dehydrating the particles mixed by the mixer to form a semi-dry material with the water content of 50-60%, and liquid generated by extrusion dehydration is diluted and is conveyed into a container containing the mixed liquid through at least one lifting pump.
As a further improvement of the scheme, the deodorization and sterilization subsystem is internally provided with adsorption carbon for removing malodorous gases and chemical detergent for killing bacteria.
As a further improvement of the above scheme, the high-energy UV ultraviolet light beam is used to crack molecular bonds of the malodorous gas, and the deodorization and sterilization subsystem controls the cracking time to be less than 0.01s and the oxidation reaction time to be 2-3s by adjusting the intensity of the high-energy UV ultraviolet light beam.
According to the rapid degradation recycling system for the kitchen waste, the household waste and the percolate in the kitchen waste are separated through the sorting subsystem in a sorting mode so as to carry out first solid-liquid separation, the household waste is further crushed into particles by the crushing subsystem, the particles are extruded and dehydrated, second solid-liquid separation is realized, and the solid and the liquid in the kitchen waste are fully separated. The invention degrades the solid after twice separation by a plurality of enzymes generated by the microbial degradation bacteria in the biodegradation subsystem, and generates corresponding organic fertilizer which can be recycled, such as fertilizer and high protein feed; the liquid and the dilution water which are separated twice form mixed liquid, the mixed liquid is subjected to electrolysis, air flotation, hydrolysis acidification and biochemical process treatment through an oil-water separation subsystem, oil-water separation is carried out, the produced waste water reaches the standard and is discharged, and the grease can be recycled for reuse, so that the beneficial resources of the kitchen waste are fully utilized, meanwhile, the pollution caused by the kitchen waste is avoided, and the energy conservation and environmental protection are realized.
In the invention, the deodorization and sterilization subsystem also deodorizes and sterilizes the generated malodorous gas in the biodegradation process, thereby preventing putrefaction, being healthy and sanitary and avoiding pollution caused by the malodorous gas. And the detecting system can detect the real-time pan feeding weight of kitchen waste, the image information of each subsystem in the kitchen waste degradation treatment process, the temperature and PH of kitchen waste in the biodegradation process, and transmit to the kitchen thing networking monitor platform, and form the big data system that kitchen waste degrades fast and handles on the spot, so that monitoring personnel real-time supervision kitchen waste's processing procedure, convenient and fast, and can improve the efficiency and the quality of kitchen waste processing.
The invention can fully recover and recycle the kitchen waste, the recycling rate is not lower than 80%, the residual value of the kitchen waste can be fully utilized, meanwhile, the process can treat the kitchen waste on site, the kitchen waste and other waste can be prevented from being transported together, the transportation cost is saved, meanwhile, the kitchen waste is rapidly degraded in time, and the degradation efficiency of the kitchen waste is improved.
Drawings
Fig. 1 is a system framework diagram of a rapid degradation recycling system for kitchen waste in embodiment 1 of the present invention.
Fig. 2 is a flow chart of the kitchen waste rapid degradation in-situ treatment process in embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
Referring to fig. 1, the embodiment provides a system for rapidly degrading, recycling and reusing kitchen waste, which includes an automatic feeding subsystem, a sorting subsystem, a crushing subsystem, a blending and dewatering subsystem, a biodegradation subsystem, an oil-water separation subsystem, a deodorization and sterilization subsystem and a detection system.
The automatic feeding subsystem is used for conveying the kitchen waste with the volume reaching a preset volume to the sorting subsystem. The automatic feeding subsystem comprises a garbage collection container, an infrared sensor, a feeding controller and an automatic elevator. The garbage collection container is used for containing kitchen garbage, and the transmitting end and the receiving end of the infrared sensor are respectively installed on two sides of the top of the garbage collection container. When the kitchen waste reaches a preset volume, the kitchen waste covers a light path between a transmitting end and a receiving end of the infrared sensor, so that the infrared sensor sends a disconnection signal and transmits the disconnection signal to the feeding controller; and when the feeding controller receives the disconnection signal, the automatic lifting machine is driven to lift the garbage collection container. The garbage collection container rises along a preset track, the top of the preset track is provided with an arc-shaped structure, and when the garbage collection container rises and passes through the arc-shaped structure, the garbage collection container inclines and conveys the kitchen garbage to the sorting subsystem. When the light path between the transmitting end and the receiving end of the infrared sensor is not interrupted for a preset time, the infrared sensor sends a closing signal to the feeding controller, and the feeding controller drives the automatic lifting machine to pull the garbage collection container to descend to the original position.
In some embodiments, the auto-feed subsystem may further include a bin, a feed switch, a conveyor belt, and a weight detection device. The number of the storage boxes can be multiple, and the storage boxes are respectively arranged in kitchens of multiple users so as to collect kitchen waste of the corresponding users. The feeding switch is arranged in a feeding port formed in the bottom or the side face of the storage box and used for opening or closing the feeding port, and the feeding port is communicated with the conveying belt. The conveyor belt is used for conveying the garbage to the garbage collection container. When the feeding switch is turned on, the storage box is turned on by the feeding switch, so that the kitchen waste falls onto the conveying belt; and when the feeding switch is closed, the channel between the storage box and the conveying belt is disconnected. The weight detection device is used for detecting the weight of the storage box and the weight of the kitchen waste in the storage box and transmitting corresponding weight information to the feeding controller. A kitchen waste weight limit value is preset in the feeding controller, and when the weight detection device detects that the weight of the kitchen waste exceeds the kitchen waste weight limit value, the feeding controller opens the feeding switch, so that the kitchen waste in the storage box is transmitted to the waste collection container through the conveying belt and then transmitted to the sorting subsystem.
The sorting subsystem is used for sorting and separating the household garbage and the percolate in the kitchen garbage. The sorting subsystem comprises a drying device and a water content sensor, the drying device is used for drying kitchen waste through centrifugal rotation, and the water content sensor is used for detecting the water content of the kitchen waste in the drying device. And the sorting subsystem drives the spin-drying device to stop spin-drying when the water content detected by the water content sensor is lower than a preset water content. The spin-drying device can adopt the existing centrifugal garbage sorting machine and sorts the kitchen garbage through the garbage sorting machine. During sorting, the household garbage such as plastic products, instant noodle boxes, pop-top cans, glass bottles, bowls, dishes, spoons, chopsticks and the like can be sorted and separated.
The crushing subsystem is used for crushing the household garbage and crushing the household garbage into particles with the diameter of 10-30mm by adding water for dilution. Wherein, the crushing subsystem can comprise a wet crusher, and the wet crusher is used for wet crushing the household garbage. When domestic waste is crushed by a wet method, water needs to be supplied to the material and the flow of the material needs to be adjusted, so that the material is uniformly crushed, and the crushing quality is ensured.
The blending dehydration subsystem is used for blending the particles and extruding and dehydrating the blended particles to ensure that the water content is between 40 and 60 percent. More specifically, the blending dewatering subsystem includes a blender and a screw extrusion dewaterer. The mixer is used for mixing the particles in the mixing and dehydrating subsystem, the spiral extrusion dehydrator is used for extruding and dehydrating the particles mixed by the mixer to form a semi-dry material with the water content of 50-60%, and the liquid generated by extrusion dehydration is diluted and is conveyed to a container containing mixed liquid through at least one lifting pump.
The biodegradation subsystem is internally provided with microbial degradation bacteria and is used for carrying out biodegradation on kitchen wastes (such as fruits and vegetables, vegetable leaves, vegetable roots, food residues, chicken, duck, fish and meat wastes, shrimp and crab shells, egg shells, bones, swill and the like) in the extruded and dehydrated particles and producing organic fertilizers for recycling. In the biodegradation process, the biodegradation subsystem stirs, heats at constant temperature, ventilates and dries the granule after squeezing and dehydrating. The method for producing the microbial degradation bacteria comprises the following steps: monitoring the changes of temperature, pH, water-soluble COD, conductivity, TS, VS, protein, cellulose, fat and enzyme activity in the composting process, and determining the relation between the inoculation amount of the corresponding high-salt-resistant composting microbial compound inoculum and the inoculation time, water content, environmental temperature and stirring frequency to generate corresponding microbial degradation bacteria.
In this embodiment, the biodegradation subsystem includes a biochemical reaction chamber, and the biochemical reaction chamber is used for biodegrading the kitchen waste. The front end of the biochemical reaction chamber is provided with a solid-water-oil biological phase separation and removal structure so as to separate and remove more than 95% of animal and vegetable oil in the particles after extrusion dehydration. The biochemical reaction cabin is also used for carrying out aerobic fermentation treatment on the extruded and dehydrated particles; the biochemical reaction cabin combines forced ventilation and internal stirring and turning, so that the degradation efficiency of volatile organic matters in the particles reaches more than 70%, and parasites (eggs), pathogenic bacteria and viruses in the particles are inactivated.
The deodorization and sterilization subsystem is used for removing malodorous gas generated in the biodegradation subsystem and killing bacteria through high-energy UV light beams. When the particles after extrusion dehydration are biodegraded, molecular bonds of malodorous gas generated by biodegradation are cracked by high-energy UV light beams so as to change the molecular chain structure of the malodorous gas, the molecular chains of organic polymer malodorous compounds are broken, and the molecular bonds of bacteria in the malodorous gas are cracked by the high-energy UV light beams, so that the malodorous gas is removed and the bacteria are killed. The high-energy UV light beam and the ozone carry out the synergistic decomposition and oxidation reaction, so that the malodorous gas substances are degraded and converted into low molecular compounds, water, carbon dioxide and the like. When the molecular bond is cracked, the cracking time is controlled to be less than 0.01s, and the oxidation reaction time is controlled to be 2-3 s. And when the particles after extrusion dehydration are biodegraded, a high-energy UV light beam is used, and meanwhile, a chemical detergent and adsorption carbon can be arranged in the deodorization and sterilization subsystem, wherein the chemical detergent is used for killing bacteria, and the adsorption carbon is used for adsorbing to remove malodorous gas.
The detection system is used for detecting the weight of the fed material in the automatic feeding subsystem and the temperature and PH of the kitchen waste in the biodegradation subsystem in real time, and remotely transmitting the weight, the temperature and the PH of the fed material to a preset kitchen Internet of things monitoring platform. The detection system can comprise a weighing sensor, a temperature sensor and a ph sensor. The weighing sensor is used for detecting the weight of the fed materials in the automatic feeding subsystem, the temperature sensor is used for detecting the temperature of the kitchen waste in the biodegradation subsystem, and the PH value sensor is used for detecting the PH of the kitchen waste in the biodegradation subsystem.
In some embodiments, the detection system may further include a GPS positioning module, and the GPS positioning module is configured to detect the location information of the automatic feeding subsystem, and remotely transmit the location information to the kitchen internet of things monitoring platform through a wireless transmission module.
In some embodiments, the detection system may further comprise a plurality of monitoring probes. The monitoring probes are used for respectively acquiring image information in the automatic feeding subsystem, the sorting subsystem, the crushing subsystem, the blending and dewatering subsystem, the biodegradation subsystem, the oil-water separation subsystem and the deodorization and sterilization subsystem. The detection system remotely transmits the image information to the kitchen Internet of things monitoring platform through the wireless transmission module.
The kitchen Internet of things monitoring platform can acquire the processing data and display the position information and the corresponding processing data of each kitchen waste processing place (namely the place where the automatic feeding subsystem is located) through at least one display screen. Therefore, the kitchen internet of things monitoring platform collects various processing data of each processing place, a big data system of the kitchen waste rapid degradation on-site processing technology is formed, monitoring personnel of the kitchen internet of things monitoring platform can monitor the processing process of the kitchen waste of each processing place in real time, the kitchen waste rapid degradation on-site processing platform is convenient and rapid, and the efficiency and the quality of kitchen waste processing can be improved.
In conclusion, the quick degradation cycle recycle system of kitchen garbage of this embodiment separates domestic waste and filtration liquid in the kitchen garbage through the letter sorting subsystem to carry out primary solid-liquid separation, the broken subsystem further breaks domestic waste into the particulate matter, carries out extrusion dehydration to the particulate matter, realizes secondary solid-liquid separation, fully with the solid and the liquid separation in the kitchen garbage. In the embodiment, the solids after twice separation are degraded by various enzymes generated by the microbial degradation bacteria in the biodegradation subsystem, and corresponding organic fertilizers are generated, and can be recycled, such as fertilizers and high-protein feeds; the liquid and the dilution water which are separated twice form mixed liquid, the mixed liquid is subjected to electrolysis, air flotation, hydrolysis acidification and biochemical process treatment through an oil-water separation subsystem, oil-water separation is carried out, the produced waste water reaches the standard and is discharged, and the grease can be recycled for reuse, so that the beneficial resources of the kitchen waste are fully utilized, meanwhile, the pollution caused by the kitchen waste is avoided, and the energy conservation and environmental protection are realized.
In this embodiment, the deodorization and sterilization subsystem is also used for deodorizing and sterilizing the generated malodorous gas in the biodegradation process, so that the generated malodorous gas is prevented from being rotten, is healthy and sanitary, and avoids pollution caused by the malodorous gas. And the detecting system can detect the real-time pan feeding weight of kitchen waste, the image information of each subsystem in the kitchen waste degradation treatment process, the temperature and PH of kitchen waste in the biodegradation process, and transmit to the kitchen thing networking monitor platform, and form the big data system that kitchen waste degrades fast and handles on the spot, so that monitoring personnel real-time supervision kitchen waste's processing procedure, convenient and fast, and can improve the efficiency and the quality of kitchen waste processing.
This embodiment can fully retrieve and recycle kitchen garbage, and the reuse rate is not less than 80% moreover, can make full use of kitchen garbage's residual value, and the technology of this embodiment can be handled kitchen garbage on the spot simultaneously, can avoid transporting kitchen garbage and other rubbish together, saves the cost of transportation, has carried out quick degradation to kitchen garbage simultaneously in time, improves kitchen garbage's degradation efficiency.
Example 2
Referring to fig. 2, the embodiment provides a fast degradation and in-situ treatment process for kitchen waste, which is applied to the fast degradation and recycling system for kitchen waste in embodiment 1, and the fast degradation and in-situ treatment process for kitchen waste comprises the following steps:
(1) automatic feeding and weighing
Weighing the kitchen waste in real time through a remote weighing sensor, and automatically feeding the kitchen waste to the next step through an automatic lifting machine; wherein, the weighing data of the kitchen waste is transmitted to the kitchen Internet of things monitoring platform.
(2) Sorting and crushing
Sorting and separating the household garbage and the percolate in the kitchen garbage, and crushing the separated household garbage into particles with the diameter of 10-30 mm; when the domestic garbage is sorted, the domestic garbage such as plastic products, instant noodle boxes, pop-top cans, glass bottles, bowls, dishes, spoons, chopsticks and the like can be sorted manually (like the existing garbage sorting treatment mode); and the sorted materials can be crushed by a crusher. Of course, when the household garbage is sorted, the existing automatic sorting device can be adopted to sort the household garbage. When the domestic garbage is crushed, a wet crushing method is adopted to supply water to the materials and adjust the flow of the materials.
(3) Dewatering and transport
Stirring the crushed 10-30mm granular materials together, removing most of water by extrusion dehydration, controlling the water content at 40-60%, conveying the materials while dehydrating, and transferring to the next step. And when the particles after the mixing and the dehydration are extruded, the particles are rotated at a high speed and dehydrated to form a semi-dry material with the water content of 50-60%, and the liquid generated by the extrusion and the dehydration is diluted and conveyed to a container containing the mixed liquid through at least one lifting pump.
(4) Biochemical reaction treatment
Various enzymes are generated by microbial degradation bacteria, so that kitchen waste (such as fruits and vegetables, vegetable leaves, vegetable roots, food residues, chicken, duck, fish and meat waste, shrimp and crab shells, egg shells, bones, swill and the like) in the extruded and dehydrated particles is biodegraded, and organic fertilizer for recycling is generated; in the process of biodegradation, auxiliary processes such as stirring, constant-temperature heating, ventilating and drying are carried out on the particles after extrusion dehydration. In this embodiment, the reaction device for performing biodegradation on the kitchen waste can be a biochemical reaction chamber, and the front end of the biochemical reaction chamber is provided with a separation and removal structure for solid-water-oil biological phase, so as to separate and remove more than 95% of animal and vegetable oil in the particles after extrusion dehydration. The biochemical reaction cabin is also used for carrying out aerobic fermentation treatment on the extruded and dehydrated particles; the biochemical reaction cabin combines forced ventilation and internal stirring and turning, so that the degradation efficiency of volatile organic matters in the particles reaches more than 70%, and parasites (eggs), pathogenic bacteria and viruses in the particles are inactivated.
(5) Oil-water separation
Mixing the percolate separated by sorting, dilution water generated by crushing and liquid generated by extrusion dehydration into mixed liquid, carrying out electrolysis, air flotation, hydrolytic acidification and biochemical process treatment on the mixed liquid to separate the mixed liquid by oil and water, discharging the wastewater generated by oil-water separation to reach the standard, and recycling the grease generated by oil-water separation.
When the particles after extrusion dehydration are biodegraded, molecular bonds of malodorous gas generated by biodegradation are cracked by high-energy UV light beams so as to change the molecular chain structure of the malodorous gas, the molecular chains of organic polymer malodorous compounds are broken, and the molecular bonds of bacteria in the malodorous gas are cracked by the high-energy UV light beams, so that the malodorous gas is removed and the bacteria are killed. The high-energy UV light beam and the ozone carry out the synergistic decomposition and oxidation reaction, so that the malodorous gas substances are degraded and converted into low molecular compounds, water, carbon dioxide and the like. When the molecular bond is cracked, the cracking time is controlled to be less than 0.01s, and the oxidation reaction time is controlled to be 2-3 s. And when the particles after extrusion dehydration are biodegraded, malodorous gas can be removed and bacteria can be killed by chemical washing agents and adsorption carbon while high-energy UV light beams are used.
In the step (1), the kitchen Internet of things monitoring platform is used for collecting and remotely monitoring processing data generated in the kitchen waste rapid degradation in-situ processing technology. The kitchen Internet of things monitoring platform detects the temperature of the particles subjected to biodegradation extrusion dehydration through at least one temperature sensor, and the kitchen Internet of things monitoring platform collects images of the particles subjected to sorting separation, blending and extrusion dehydration of the particles and the biodegradation extrusion dehydration through a plurality of monitoring probes respectively. In this embodiment, the processing data includes temperature information detected by the temperature sensor and image information collected by the monitoring probe, but in other embodiments, the processing data may also be other data in the process. The kitchen Internet of things monitoring platform respectively collects the position information of a plurality of kitchen waste disposal places through a plurality of GPS positioning modules, and each kitchen waste disposal place corresponds to the disposal data of the kitchen waste disposal place. The kitchen Internet of things monitoring platform displays the position information and the corresponding processing data of each kitchen waste processing place through at least one display screen. Therefore, the kitchen internet of things monitoring platform collects various processing data of each processing place, a big data system of the kitchen waste rapid degradation on-site processing technology is formed, monitoring personnel of the kitchen internet of things monitoring platform can monitor the processing process of the kitchen waste of each processing place in real time, the kitchen waste rapid degradation on-site processing platform is convenient and rapid, and the efficiency and the quality of kitchen waste processing can be improved.
In this embodiment, the method for producing the microorganism-degrading bacteria is as follows: monitoring the changes of temperature, pH, water-soluble COD, conductivity, TS, VS, protein, cellulose, fat and enzyme activity in the composting process, and determining the relation between the inoculation amount of the corresponding high-salt-resistant composting microbial compound inoculum and the inoculation time, water content, environmental temperature and stirring frequency to generate corresponding microbial degradation bacteria.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. A kitchen waste rapid degradation recycling system is characterized by comprising an automatic feeding subsystem, a sorting subsystem, a crushing subsystem, a blending dehydration subsystem, a biodegradation subsystem, an oil-water separation subsystem, a deodorization sterilization subsystem and a detection system;
the automatic feeding subsystem is used for conveying the kitchen waste with the volume reaching a preset volume to the sorting subsystem; the automatic feeding subsystem comprises a garbage collection container, an infrared sensor, a feeding controller and an automatic elevator; the garbage collection container is used for containing the kitchen garbage, and the transmitting end and the receiving end of the infrared sensor are respectively installed on two sides of the top of the garbage collection container; when the kitchen waste reaches the preset volume, the kitchen waste covers a light path between a transmitting end and a receiving end of the infrared sensor, so that the infrared sensor sends a disconnection signal and transmits the disconnection signal to the feeding controller; when the feeding controller receives the disconnection signal, the automatic lifting machine is driven to lift the garbage collection container; the garbage collection container ascends along a preset track, the top of the preset track is provided with an arc-shaped structure, and when the garbage collection container ascends and passes through the arc-shaped structure, the garbage collection container inclines and conveys the kitchen garbage to the sorting subsystem; when the light path between the transmitting end and the receiving end of the infrared sensor is not interrupted for a preset time, the infrared sensor sends a closing signal to the feeding controller, and the feeding controller drives the automatic lifting machine to pull the garbage collection container to descend to the original position; the automatic feeding subsystem further comprises a storage box, a feeding switch, a conveying belt and a weight detection device; the number of the storage boxes is multiple, and the storage boxes are respectively arranged in kitchens of multiple users so as to collect kitchen waste of the corresponding users; the feeding switch is arranged in a feeding opening formed in the bottom or the side surface of the storage box and used for opening or closing the feeding opening, and the feeding opening is communicated with the conveying belt; the conveying belt is used for conveying the garbage to the garbage collection container; when the feeding switch is turned on, the storage box is turned on by the feeding switch, so that the kitchen waste falls onto the conveyor belt; when the feeding switch is closed, the channel between the storage box and the conveying belt is disconnected; the weight detection device is used for detecting the weight of the storage box and the weight of the kitchen waste in the storage box and transmitting corresponding weight information to the feeding controller; a kitchen waste weight limit value is preset in the feeding controller, and when the weight detection device detects that the weight of the kitchen waste exceeds the kitchen waste weight limit value, the feeding controller opens the feeding switch, so that the kitchen waste in the storage box is transmitted to the waste collection container through the conveying belt and further transmitted to the sorting subsystem;
the sorting subsystem is used for sorting and separating the household garbage and the percolate in the kitchen garbage; the sorting subsystem comprises a spin-drying device and a water content sensor, the spin-drying device is used for spin-drying the kitchen waste by centrifugally rotating the kitchen waste, and the water content sensor is used for detecting the water content of the kitchen waste in the spin-drying device; the sorting subsystem drives the spin-drying device to stop spin-drying when the water content detected by the water content sensor is lower than a preset water content;
the crushing subsystem is used for crushing the household garbage and crushing the household garbage into particles with the diameter of 10-30mm by adding water for dilution;
the blending dehydration subsystem is used for blending the particles and extruding and dehydrating the blended particles to ensure that the water content is between 40 and 60 percent;
microbial degradation bacteria are arranged in the biodegradation subsystem and are used for performing biodegradation on the kitchen waste in the extruded and dehydrated particles and generating an organic fertilizer for recycling; in the biodegradation process, the biodegradation subsystem stirs, heats at constant temperature, ventilates and dries the dehydrated particles;
the oil-water separation subsystem is used for receiving mixed liquid formed by mixing the percolate, dilution water generated by crushing of the crushing subsystem and liquid generated by extrusion and dehydration of the blending and dehydration subsystem, carrying out electrolysis, air flotation, hydrolytic acidification and biochemical process treatment on the mixed liquid to separate the mixed liquid from oil, and separating to obtain standard wastewater and grease;
the deodorization and sterilization subsystem is used for removing malodorous gas generated in the biodegradation subsystem and killing bacteria through high-energy UV light beams;
the detection system is used for detecting the weight of the feeding materials in the automatic feeding subsystem, the temperature and the PH of the kitchen waste in the biodegradation subsystem in real time, and remotely transmitting the weight, the temperature and the PH to a preset kitchen Internet of things monitoring platform.
2. The kitchen waste rapid degradation recycling system according to claim 1, wherein the detection system comprises a GPS positioning module, the GPS positioning module is used for detecting the position information of the automatic feeding subsystem, and the position information is remotely transmitted to the kitchen Internet of things monitoring platform through a wireless transmission module.
3. The rapid degradation recycling system for kitchen waste according to claim 2, wherein the detection system further comprises a weighing sensor, a temperature sensor and a ph sensor; the weighing sensor is used for detecting the weight of pan feeding in the automatic pan feeding subsystem, temperature sensor is used for detecting the temperature of the kitchen discarded object in the biodegradable subsystem, the PH value sensor is used for detecting the PH of the kitchen discarded object in the biodegradable subsystem.
4. The rapid degradation recycling system for kitchen waste according to claim 3, wherein the detection system further comprises a plurality of monitoring probes; the plurality of monitoring probes are used for respectively acquiring image information in the automatic feeding subsystem, the sorting subsystem, the crushing subsystem, the blending and dewatering subsystem, the biodegradation subsystem, the oil-water separation subsystem and the deodorization and sterilization subsystem; the detection system remotely transmits the image information to the kitchen Internet of things monitoring platform through the wireless transmission module.
5. The kitchen waste rapid degradation recycling system according to claim 1, wherein the biodegradation subsystem comprises a biochemical reaction chamber, and the biochemical reaction chamber is used for biodegrading the kitchen waste; the front end of the biochemical reaction chamber is provided with a solid-water-oil biological phase separation and removal structure so as to separate and remove animal and vegetable oil in the extruded and dehydrated particles.
6. The rapid degradation and recycling system for kitchen waste according to claim 5, wherein the biochemical reaction chamber is further used for performing aerobic fermentation treatment on the extruded and dehydrated particles; the biochemical reaction cabin combines forced ventilation and internal stirring and turning, so that the degradation efficiency of volatile organic matters in the particles reaches more than 70%, and parasites, parasitic eggs, pathogenic bacteria and viruses in the particles are inactivated.
7. The rapid degradation recycling system of kitchen waste according to claim 1,
the crushing subsystem comprises a wet crusher, and the wet crusher is used for crushing the household garbage by a wet method;
the mixing and dewatering subsystem comprises a stirrer and a spiral extrusion dewaterer; the mixer is used for mixing the particles in the mixing and dehydrating subsystem, the screw extrusion dehydrator is used for extruding and dehydrating the particles mixed by the mixer to form a semi-dry material with the water content of 50-60%, and liquid generated by extrusion dehydration is diluted and is conveyed into a container containing the mixed liquid through at least one lifting pump.
8. The system for rapidly degrading, recycling and reusing kitchen waste according to claim 1, wherein an adsorption carbon for removing malodorous gases and a chemical detergent for killing bacteria are arranged in the deodorization and sterilization subsystem.
9. The kitchen waste rapid degradation recycling system according to claim 1, wherein the high-energy UV light beam is used for cracking molecular bonds of the malodorous gas, and the deodorization and sterilization subsystem controls the cracking time to be less than 0.01s and the oxidation reaction time to be 2-3s by adjusting the intensity of the high-energy UV light beam.
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