CN111362732A - Intelligent kitchen waste recycling treatment system and method - Google Patents
Intelligent kitchen waste recycling treatment system and method Download PDFInfo
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- CN111362732A CN111362732A CN202010172840.1A CN202010172840A CN111362732A CN 111362732 A CN111362732 A CN 111362732A CN 202010172840 A CN202010172840 A CN 202010172840A CN 111362732 A CN111362732 A CN 111362732A
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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
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/02—Form or structure of the vessel
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/40—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pressure
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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
Abstract
The invention provides an intelligent kitchen garbage recycling treatment system and method. The treatment method realizes the intelligent treatment of the kitchen garbage through intelligent transportation, impurity removal by pretreatment and dry anaerobic fermentation. The intelligent control improves the stability of the system, reduces the operation energy consumption and the personnel investment, and achieves the effect of reducing the system ton processing energy consumption. The pretreatment part effectively separates impurities, wherein a hydraulic pulp washer is used for removing heavy impurities such as silt and separating organic matters, so that the loss of the organic matters is reduced, the impurities are removed, the gas yield of anaerobic fermentation is improved, and the resource utilization rate of the organic matters is improved. The dry anaerobic fermentation technology is adopted, the defect of sediment precipitation in the wet anaerobic fermentation process is avoided, a small amount of biogas slurry generated in the dry anaerobic fermentation process can flow back to the pretreatment system for hydraulic allocation, and sewage treatment equipment does not need to be added independently.
Description
Technical Field
The invention relates to the field of kitchen waste treatment, in particular to an intelligent kitchen waste recycling treatment system and method.
Background
With the gradual saturation of kitchen waste recycling projects and the increase of the national policy requirements on the aspect of kitchen waste classification and collection, the kitchen waste recycling projects have huge market, and have very wide application and development prospects. Due to the characteristic that the components of the kitchen waste in China are complex, the pretreatment stage becomes the bottleneck of recycling the kitchen waste, and also becomes the key point of research and development of various enterprises or scientific research units. After the intelligent kitchen waste treatment system enables kitchen waste to be pretreated, the requirements of anaerobic fermentation can be met in the aspects of TS content, material particle size, impurity content, transportability and the like, the resource utilization degree of the kitchen waste is improved, meanwhile, through falling to the ground of an intelligent and Internet of things management and control platform, process data of various items can be collected to improve the process technology level, information interaction between a client and the platform can be realized, the stability, reliability and low energy consumption of a kitchen waste treatment project are realized, and the market demands of China in the kitchen waste treatment field in the future are met.
Prior art scheme 1:
application No.: 201410554673.1: (a) pulverizing kitchen garbage into particles with diameter not more than 5cm, mixing with fermentation strain accounting for 0.01 wt% of the kitchen garbage to obtain fermentation material, feeding the fermentation material into a dry-type anaerobic reactor for dry-type anaerobic treatment, maintaining the temperature of the dry-type anaerobic reactor within the range of 33-35 deg.C, intermittently spraying circulating water to the fermentation material during the dry-type anaerobic treatment, controlling the flow rate of the circulating water by using a flow control valve, wherein the ratio of the volume of the circulating water sprayed into the fermentation material per 24 hours to the volume of the fermentation material is 5:1-8:1, dissolving the small-molecular-weight volatile fatty acid generated by the fermentation material through hydrolytic acidification reaction into the circulating water, filtering the circulating water through a filter layer, flowing out of the dry-type anaerobic reactor, returning the circulating water back to a circulating water tank, repeatedly leaching the fermentation material in such a circulating manner, and controlling the content of the volatile fatty acid flowing out of the dry-type anaerobic reactor to be within the range of 2g And (c) simultaneously replacing the circulating water in the circulating water pool by using the reuse water treated in the step (b) according to a certain proportion every day, and feeding the replaced circulating water into the step (b) for anaerobic treatment. So that the content of volatile fatty acid entering the circulating water of the dry anaerobic reactor is below 10 g/L; gas generated in the hydrolytic acidification process of the fermentation material is sent into a gas-water separator from the top of the dry anaerobic reactor, and the separated gas is recycled; after the fermentation material is subjected to hydrolysis acidification reaction for 18-21 days in the dry-type anaerobic reactor, when the content of volatile fatty acid in the circulating water flowing out of the dry-type anaerobic reactor is not more than the content of volatile fatty acid in the circulating water flowing into the dry-type anaerobic reactor and is +50mg/L, stopping spraying the circulating water to the dry-type anaerobic reactor, then opening a discharge hole at the lower part of the dry-type anaerobic reactor for discharging, and sending the fermented residue to the step (c) for treatment; (b) feeding the circulating water into anaerobic treatment, facultative treatment, aerobic treatment, membrane bioreactor treatment and nanofiltration membrane treatment in sequence to obtain standard water, and returning the standard water as reuse water to a circulating water tank or discharging the standard water; after the biogas generated in the anaerobic treatment is subjected to desulfurization and dehydration treatment, putting the biogas into a storage bag; (c) dewatering the fermented residue by a dewatering machine, and sending the dewatered liquid into the anaerobic treatment in the step (b) for treatment; the water content of the dehydrated residues is less than 65 percent, the dehydrated residues are subjected to aerobic dynamic composting treatment, the composting temperature is controlled to be 55-65 ℃, after 10-15 days, the dehydrated residues become organic fertilizers with stable humus, and malodorous gases generated in the aerobic dynamic composting process are treated by a composting tail gas biological treatment device and then are discharged after reaching the standard.
The disadvantages of the technical scheme 1 are as follows:
1) dissolving organic matters in water through a leaching device, and then performing anaerobic fermentation, wherein the generated sewage needs to be subjected to sewage treatment independently;
2) the retention time in the leaching process is longer, so that the device has larger volume, larger occupied area and higher manufacturing cost, and the leaching device is easy to block;
3) the system has complex equipment technology, large material size entering the leaching device, low degradation efficiency, low organic matter recycling degree and poor fertilizer preparation effect, and partial organic matters cannot be fully utilized.
Prior art scheme 2:
application No.: 201910391994.7: the scheme comprises a kitchen waste receiving tank, a rotary screen, a butterfly screen, a winnowing machine, a crusher, an anaerobic conveying pump and a dry anaerobic fermentation tank; the bottom of the kitchen waste receiving tank is provided with a kitchen waste outlet; the rotary screen is arranged below the kitchen waste outlet and is used for screening the kitchen waste output from the kitchen waste outlet; the butterfly-shaped sieve is arranged at the lower part of the drum sieve, and organic matters screened by the drum sieve fall into the butterfly-shaped sieve for further sorting; the winnowing machine is arranged at the lower part of the butterfly-shaped sieve and is used for further sorting the materials screened out by the butterfly-shaped sieve; the winnowing machine is connected with the crusher, and the organic matters after the winnowing machine are conveyed to the crusher to be crushed; the crusher is connected with the anaerobic fermentation tank through an anaerobic delivery pump, and the crushed material is pumped to a dry anaerobic fermentation system.
The technical scheme 2 has the following defects:
1) the drum sieve, the disc sieve and the winnowing machine are arranged from top to bottom, so that the installation and the operation are difficult in actual engineering and the materials are not easy to enter;
2) the winnowing is positioned at the bottom of the disc sieve, and the direction of winnowing materials conflicts with the direction of screening materials by the disc sieve, so that the screening effect is influenced;
3) the broken materials are conveyed to an anaerobic system by a pump, the difficulty of conveying the materials by a pump body in actual engineering is high, and after the materials enter anaerobic fermentation, the discharging mode and the subsequent treatment process are not explicitly described.
Disclosure of Invention
Aiming at the problems of the existing kitchen waste treatment, the invention provides an intelligent kitchen waste recycling treatment system.
The invention adopts the following technical scheme:
an intelligent kitchen garbage recycling treatment system comprises a transportation part, a pretreatment part, an anaerobic fermentation part and an intelligent control part;
the transportation part comprises a garbage transportation vehicle and a garbage storage pool, the garbage storage pool is connected with a plate link chain conveyor, and the plate link chain conveyor is connected with a belt conveyor;
the pretreatment part comprises a roller screening machine, the roller screening machine is connected with a screw conveyor, the screw conveyor is connected with a hydraulic pulp washer, the hydraulic pulp washer is connected with a crushing and sorting machine, and the crushing and sorting machine is connected with a solid-liquid separator;
the conveying anaerobic fermentation part comprises a dry anaerobic fermentation component;
the intelligent control part comprises a PLC control unit, an intelligent gateway and a main server, the PLC control unit uploads data to the intelligent gateway, and the intelligent gateway encrypts and uploads the data to the main server.
Preferably, the transport vehicle transports the kitchen waste to the waste storage pool, and the PLC control unit can collect the position, the route and the loading data of the transport vehicle.
Preferably, the belt conveyor is connected with the drum screening machine, the solid-liquid separator is connected with the dry anaerobic fermentation assembly, and the PLC control unit is respectively and electrically connected with the plate chain conveyor, the belt conveyor, the drum screening machine, the spiral conveyor, the hydraulic pulp washer, the crushing and sorting machine, the solid-liquid separator and the dry anaerobic fermentation assembly.
The second purpose of the invention is to provide an intelligent kitchen garbage recycling method.
An intelligent kitchen waste recycling method, which adopts the intelligent kitchen waste recycling system as claimed in any one of claims 1 to 4, and comprises the following steps:
step 1: the PLC control unit can collect the position, the route and the loading data of the transport vehicle, pre-judge the approach time and the material amount in advance, intelligently coordinate the production environment of the preprocessing part and perform production preparation in advance;
step 2: after the garbage is transported to a processing yard, the PLC control unit collects data of the incoming material amount and the incoming material time through front-end weighing, sets a main door and a discharge bin door of an intelligent opening discharge hall, opens a material channel, and pours the garbage of a transport vehicle into a garbage storage pool;
and step 3: conveying the garbage in the garbage storage pool to a belt conveyor by using a plate chain conveyor, and conveying the garbage to a drum screening machine by using the belt conveyor; a belt scale is arranged on the belt conveyor and connected with the PLC control unit;
and 4, step 4: removing light impurities from the garbage in a roller screening machine, then conveying the garbage to a hydraulic pulp washer by a screw conveyor, blending into uniform slurry in the hydraulic pulp washer, associating the water inlet flow with the material amount entering the hydraulic pulp washer during blending, blending the material according to a set proportion, associating the discharge pump flow with the liquid level of the pulp washer, and ensuring that the liquid level is stable and the retention time of the material in the pulp washer is constant; the method comprises the following steps that materials processed by a hydraulic pulp washer enter a crushing and sorting machine, the crushing condition is monitored according to the torque and the current of the crushing and sorting machine, and continuous feeding is avoided when overload or blockage occurs; then, the material enters a solid-liquid separator to separate liquid in the material;
and 5: the materials after solid-liquid separation enter a dry anaerobic fermentation assembly, the dry anaerobic fermentation assembly comprises a feeder and a horizontal fermentation tank, the materials are fed into the horizontal fermentation tank through the feeder and then are subjected to biodegradation in a closed environment, organic matter in the materials is subjected to biodegradation through an anaerobic fermentation process for 22 days to generate biogas, the biogas enters a gas storage cabinet through a pipeline for temporary storage, fermented biogas residues are left after anaerobic fermentation, the biogas residues are treated by external transportation after dehydration, and the generated biogas slurry flows back to a pretreatment part for hydraulic allocation.
Preferably, the horizontal fermentation tank is of a steel-concrete structure, a stirrer is arranged in the horizontal fermentation tank, the anaerobic fermentation adopts a high-temperature fermentation process, and the fermentation temperature is 54 +/-1 ℃; the horizontal fermentation tank adopts a coil heating mode, and meanwhile, a heat preservation measure is adopted on the outer wall of the horizontal fermentation tank.
Preferably, an instrument is arranged in the anaerobic fermentation tank, and the height, the temperature and the methane pressure parameters of the materials in the anaerobic fermentation tank are monitored in real time.
The invention has the beneficial effects that:
1. through system intelligent control, reduce the operation energy consumption, reduce personnel's input when promoting system stability, reach the effect that reduces system ton and handle the energy consumption.
2. The pretreatment part effectively separates impurities, wherein a hydraulic pulp washer is used for removing heavy impurities such as silt and separating organic matters, so that the loss of the organic matters is reduced, the impurities are removed, the gas yield of anaerobic fermentation is improved, and the resource utilization rate of the organic matters is improved.
3. The dry anaerobic fermentation technology is adopted, the defect of sediment precipitation in the wet anaerobic fermentation process is avoided, no good solution is provided for secondary pollution caused by sewage generated by wet anaerobic fermentation, a small amount of biogas slurry generated in the dry anaerobic fermentation process can flow back to a pretreatment system for hydraulic allocation, sewage treatment equipment does not need to be added independently, and the problem of biogas slurry treatment in sewage treatment is solved.
Drawings
FIG. 1 is a flow chart of kitchen garbage disposal according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
example 1
With reference to fig. 1, an intelligent kitchen waste recycling treatment system comprises a transportation part, a pretreatment part, an anaerobic fermentation part and an intelligent control part.
The transportation part comprises a garbage transportation vehicle and a garbage storage pool, the garbage storage pool is connected with a plate chain conveyor, and the plate chain conveyor is connected with a belt conveyor.
The pretreatment part comprises a roller screening machine, the roller screening machine is connected with a screw conveyor, the screw conveyor is connected with a hydraulic pulp washer, the hydraulic pulp washer is connected with a crushing separator, and the crushing separator is connected with a solid-liquid separator.
The conveying anaerobic fermentation part comprises a dry anaerobic fermentation assembly.
The intelligent control part comprises a PLC control unit, an intelligent gateway and a main server, the PLC control unit uploads data to the intelligent gateway, and the intelligent gateway encrypts and uploads the data to the main server.
The transport vehicle transports the kitchen garbage to the garbage storage pool, and the PLC control unit can collect the position, the route and the loading data of the transport vehicle.
The belt conveyor is connected with the drum screening machine, the solid-liquid separator is connected with the dry anaerobic fermentation assembly, and the PLC control unit is respectively and electrically connected with the plate chain conveyor, the belt conveyor, the drum screening machine, the spiral conveyor, the hydraulic pulp washer, the crushing separator, the solid-liquid separator and the dry anaerobic fermentation assembly.
Example 2
An intelligent kitchen waste recycling treatment method adopts the intelligent kitchen waste recycling treatment system of the embodiment, and the treatment method comprises the following steps:
step 1: and (3) intelligent collection and transportation, wherein the PLC control unit can collect data such as positions, routes, loading capacity and the like of the transport vehicles, prejudges the entrance time and the material quantity in advance, intelligently coordinates the production environment of the pretreatment part, and performs production preparation in advance.
Step 2: after rubbish is transported to the disposal site, the PLC control unit weighs through the front end and comes the data acquisition of material volume and supplied materials time, sets up intelligence and opens the hall main door of unloading, unloads the bin gate, gets through the material passageway, pours haulage vehicle's rubbish into rubbish reservoir.
And step 3: conveying the garbage in the garbage storage pool to a belt conveyor by using a plate chain conveyor, and conveying the garbage to a drum screening machine by using the belt conveyor; the belt conveyor is provided with the belt weigher, and the belt weigher is connected with the PLC control unit to ensure that materials are conveyed uniformly.
And 4, step 4: removing light impurities from the garbage in a roller screening machine, then conveying the garbage to a hydraulic pulp washer by a screw conveyor, blending into uniform slurry in the hydraulic pulp washer, associating the water inlet flow with the material amount entering the hydraulic pulp washer during blending, blending the material according to a set proportion, associating the discharge pump flow with the liquid level of the pulp washer, and ensuring that the liquid level is stable and the retention time of the material in the pulp washer is constant; the method comprises the following steps that materials processed by a hydraulic pulp washer enter a crushing and sorting machine, the crushing condition is monitored according to the torque and the current of the crushing and sorting machine, and continuous feeding is avoided when overload or blockage occurs; and then, the materials enter a solid-liquid separator to separate liquid in the materials, so that proper material concentration is provided for dry anaerobic fermentation.
And 5: the materials after solid-liquid separation enter a dry anaerobic fermentation component, the dry anaerobic fermentation component is the core part of the whole system, clean energy biogas is generated by biodegradation, and resource utilization of the kitchen waste is realized.
Specifically, the dry anaerobic fermentation assembly comprises a feeder and a horizontal fermentation tank, materials are fed into the horizontal fermentation tank through the feeder and then are subjected to biodegradation in a closed environment, organic matter in the materials is subjected to biodegradation through an anaerobic fermentation process for 22 days to generate biogas, the biogas enters a gas storage cabinet through a pipeline for temporary storage, residues after anaerobic fermentation are fermented biogas residues, the biogas residues are transported and treated outside after dehydration, the generated biogas slurry flows back to a pretreatment part for hydraulic allocation, and a sewage treatment system does not need to be arranged independently.
The horizontal fermentation tank is of a steel-concrete structure, and a stirrer is arranged in the horizontal fermentation tank to ensure that materials in the fermentation tank are uniformly stirred. The anaerobic fermentation adopts a high-temperature fermentation process, and the fermentation temperature is 54 +/-1 ℃. The horizontal fermentation tank adopts a coil pipe heating mode, and meanwhile, the outer wall of the horizontal fermentation tank adopts a heat preservation measure, so that the heat loss is reduced.
An instrument is arranged in the anaerobic fermentation tank, and is used for monitoring parameters of height, temperature and methane pressure of materials in the anaerobic fermentation tank in real time, so that stable operation of an anaerobic fermentation system is ensured.
TS, T, P, L, VFA, PH, COD, ammonia nitrogen and other data of the anaerobic system are collected to the instrument through the sensor, the data are uploaded to the intelligent gateway through the PLC control unit, and meanwhile, the data are encrypted, so that the safety of the intelligent gateway is ensured. The intelligent gateway simultaneously uploads the data to the main server, the APP end and the PC end, the data are analyzed at the PC end and the MES end and displayed at the terminal in the forms of production reports or benefits and the like, and a user can conveniently check the data; the program on the main server automatically analyzes data, automatically and intelligently interacts with field equipment, and performs related processing and alarming on the data with problems.
Biogas generated by the horizontal fermentation tank is gathered into a biogas main pipe, and enters a double-membrane gas storage cabinet for temporary storage after being desulfurized. The working pressure of the double-membrane gas storage cabinet is about 2kPa, the constant pressure is kept under the normal working condition, and the fluctuation of the methane volume and the pressure can be adjusted. The marsh gas is purified and compressed to be used as vehicle fuel and domestic energy or is conveyed to a gas pipeline network, and the marsh gas can be directly conveyed to a torch for combustion treatment in emergency.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (6)
1. An intelligent kitchen garbage recycling treatment system is characterized by comprising a transportation part, a pretreatment part, an anaerobic fermentation part and an intelligent control part;
the transportation part comprises a garbage transportation vehicle and a garbage storage pool, the garbage storage pool is connected with a plate link chain conveyor, and the plate link chain conveyor is connected with a belt conveyor;
the pretreatment part comprises a roller screening machine, the roller screening machine is connected with a screw conveyor, the screw conveyor is connected with a hydraulic pulp washer, the hydraulic pulp washer is connected with a crushing and sorting machine, and the crushing and sorting machine is connected with a solid-liquid separator;
the conveying anaerobic fermentation part comprises a dry anaerobic fermentation component;
the intelligent control part comprises a PLC control unit, an intelligent gateway and a main server, the PLC control unit uploads data to the intelligent gateway, and the intelligent gateway encrypts and uploads the data to the main server.
2. The intelligent kitchen waste recycling system according to claim 1, wherein the transport vehicle transports the kitchen waste to the waste storage pool, and the PLC control unit can collect the position, route and loading data of the transport vehicle.
3. An intelligent kitchen waste recycling treatment system according to claim 1, wherein the belt conveyor is connected with a drum screening machine, the solid-liquid separator is connected with the dry anaerobic fermentation assembly, and the PLC control unit is electrically connected with the plate chain conveyor, the belt conveyor, the drum screening machine, the screw conveyor, the hydraulic pulp washer, the crushing and sorting machine, the solid-liquid separator and the dry anaerobic fermentation assembly respectively.
4. An intelligent kitchen waste recycling method, which is characterized in that the intelligent kitchen waste recycling system of any one of claims 1 to 4 is adopted, and the processing method comprises the following steps:
step 1: the PLC control unit can collect the position, the route and the loading data of the transport vehicle, pre-judge the approach time and the material amount in advance, intelligently coordinate the production environment of the preprocessing part and perform production preparation in advance;
step 2: after the garbage is transported to a processing yard, the PLC control unit collects data of the incoming material amount and the incoming material time through front-end weighing, sets a main door and a discharge bin door of an intelligent opening discharge hall, opens a material channel, and pours the garbage of a transport vehicle into a garbage storage pool;
and step 3: conveying the garbage in the garbage storage pool to a belt conveyor by using a plate chain conveyor, and conveying the garbage to a drum screening machine by using the belt conveyor; a belt scale is arranged on the belt conveyor and connected with the PLC control unit;
and 4, step 4: removing light impurities from the garbage in a roller screening machine, then conveying the garbage to a hydraulic pulp washer by a screw conveyor, blending into uniform slurry in the hydraulic pulp washer, associating the water inlet flow with the material amount entering the hydraulic pulp washer during blending, blending the material according to a set proportion, associating the discharge pump flow with the liquid level of the pulp washer, and ensuring that the liquid level is stable and the retention time of the material in the pulp washer is constant; the method comprises the following steps that materials processed by a hydraulic pulp washer enter a crushing and sorting machine, the crushing condition is monitored according to the torque and the current of the crushing and sorting machine, and continuous feeding is avoided when overload or blockage occurs; then, the material enters a solid-liquid separator to separate liquid in the material;
and 5: the materials after solid-liquid separation enter a dry anaerobic fermentation assembly, the dry anaerobic fermentation assembly comprises a feeder and a horizontal fermentation tank, the materials are fed into the horizontal fermentation tank through the feeder and then are subjected to biodegradation in a closed environment, organic matter in the materials is subjected to biodegradation through an anaerobic fermentation process for 22 days to generate biogas, the biogas enters a gas storage cabinet through a pipeline for temporary storage, fermented biogas residues are left after anaerobic fermentation, the biogas residues are treated by external transportation after dehydration, and the generated biogas slurry flows back to a pretreatment part for hydraulic allocation.
5. The intelligent kitchen waste recycling method according to claim 4, wherein the horizontal fermentation tank is of a steel-concrete structure, a stirrer is arranged in the horizontal fermentation tank, the anaerobic fermentation adopts a high-temperature fermentation process, and the fermentation temperature is 54 +/-1 ℃; the horizontal fermentation tank adopts a coil heating mode, and meanwhile, a heat preservation measure is adopted on the outer wall of the horizontal fermentation tank.
6. The intelligent kitchen waste recycling method according to claim 4, wherein an instrument is arranged in the anaerobic fermentation tank to monitor parameters of material height, temperature and biogas pressure in the anaerobic fermentation tank in real time.
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| CN112251331A (en) * | 2020-10-19 | 2021-01-22 | 中国天楹股份有限公司 | Dry anaerobic fermentation system for dry and wet sorting pretreatment of kitchen waste and treatment method thereof |
| CN113403345A (en) * | 2021-06-17 | 2021-09-17 | 浙江万泰环境工程有限公司 | Household garbage treatment process |
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