CN111589848A - Household garbage recycling treatment system - Google Patents
Household garbage recycling treatment system Download PDFInfo
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- CN111589848A CN111589848A CN202010500948.9A CN202010500948A CN111589848A CN 111589848 A CN111589848 A CN 111589848A CN 202010500948 A CN202010500948 A CN 202010500948A CN 111589848 A CN111589848 A CN 111589848A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Abstract
The invention discloses a household garbage resource utilization and treatment system, which comprises: the system comprises a feeding subsystem, a first conveying mechanism, a sorting subsystem, a dry anaerobic fermentation subsystem, a high-calorific-value garbage pyrolysis subsystem and a plastic purification treatment subsystem. The treatment system is formed by organically connecting the feeding subsystem, the first conveying mechanism, the sorting subsystem, the dry anaerobic fermentation subsystem, the high-calorific-value garbage pyrolysis subsystem and the plastic purification treatment subsystem, and can combine various modes such as biochemical reaction treatment, chemical reaction treatment, physical treatment, manual treatment and the like to comprehensively treat the household garbage and achieve recycling. Because the landfill and the incineration are reduced, the environmental pollution is reduced. The treatment system can fully utilize garbage fermentation to produce organic fertilizer and methane, the garbage pyrolysis produces waste heat and ash, and in addition, plastic and leachate can be effectively recycled and utilized.
Description
Technical Field
The invention relates to the field of garbage treatment, in particular to a household garbage resource utilization treatment system.
Background
Along with the acceleration of the urbanization construction process, the population is increased, and the garbage yield is increased sharply. According to statistics, the annual output of urban garbage in the country is about 1.15 hundred million tons in the 80 th of the 20 th century, and reaches 1.43 million tons in the 90 th. At present, the annual urban garbage production amount in China is about 1.8 hundred million tons. The annual total quantity of the Chinese urban garbage is predicted to reach 4.09 hundred million tons in 2030 years. At present, city domestic garbage city in China becomes a troublesome problem for city construction and management, 2/3 fall into garbage enclosure in 600 large and medium cities in the country, and no suitable place for stacking garbage is available in 1/4 cities. The domestic garbage causes serious pollution, endangers the life health of people, destroys and influences the living environment, and becomes a hotspot and difficult problem which is concerned and urgently needed to be solved by the masses and governments at all levels.
In recent years, our country gives high attention to environmental protection and treatment of municipal domestic waste, and invests a large amount of financial resources, material resources and manpower for treatment and control. However, because the relevant regulation system is not sound enough, the processing equipment and technology are relatively lagged, and the ideal and effective processing purpose is not achieved. The method is far from the road requirements of harmless treatment, reduction, resource utilization and industrialization of household garbage treatment.
At present, two main methods for treating domestic garbage in China are garbage landfill, one is garbage incineration, the garbage landfill occupies a large amount of land, leachate is directly or indirectly discharged into lakes and the like through runoff to cause soil quality reduction and pollute underground water and surface water, the garbage incineration generates a large amount of waste gas and ash, particularly dioxin in the incineration smoke of the domestic garbage is a highly toxic substance and causes serious pollution to the local environment, and local common people are forced to resist disturbance to the utmost.
Disclosure of Invention
Based on the problems in the prior art, the invention aims to provide a household garbage resource utilization and treatment system, which can solve the problems that the existing household garbage treatment is performed through landfill or incineration, the soil quality is affected, air is polluted and the like.
The purpose of the invention is realized by the following technical scheme:
the embodiment of the invention provides a household garbage resource utilization treatment system, which comprises:
the system comprises a feeding subsystem, a first conveying mechanism, a sorting subsystem, a dry anaerobic fermentation subsystem, a high-calorific-value garbage pyrolysis subsystem and a plastic purification treatment subsystem; wherein the content of the first and second substances,
the feeding subsystem is respectively provided with a garbage material outlet, a second material outlet and a percolate outlet, and the garbage material outlet is connected with the sorting subsystem through the first conveying mechanism; the percolate outlet is connected with the dry anaerobic fermentation subsystem; the second material outlet is connected with the high-calorific-value garbage pyrolysis subsystem;
the sorting subsystem is respectively provided with a metal recovery outlet, a screen underflow outlet, a heavy material outlet, a screen underflow outlet, a light material outlet, a manual sorting light material outlet and a manual sorting heavy material outlet; the metal recovery outlet is used for being connected with a metal recovery mechanism; the undersize outlet and the heavy material outlet are both connected with the dry anaerobic fermentation subsystem; the undersize heavy object outlet and the manual sorting heavy object outlet are both connected with the high-calorific-value garbage pyrolysis subsystem; the light material outlet and the manual sorting light material outlet are both connected with the plastic purification treatment subsystem;
the dry anaerobic fermentation subsystem is respectively provided with a methane outlet and an ash inlet, and the methane outlet is connected with the high-calorific-value garbage pyrolysis subsystem;
the high calorific value garbage pyrolysis subsystem is provided with an ash outlet and a waste heat utilization outlet, and the ash outlet is connected with an ash inlet of the dry anaerobic fermentation subsystem; the waste heat utilization outlet is connected with the dry anaerobic fermentation subsystem;
the plastic purification treatment subsystem is provided with a plastic raw material outlet and is used for connecting plastic granulation equipment.
According to the technical scheme provided by the invention, the household garbage recycling treatment system provided by the embodiment of the invention has the beneficial effects that:
the household garbage treatment system is formed by the organically connected feeding subsystem, the first conveying mechanism, the sorting subsystem, the dry anaerobic fermentation subsystem, the high-calorific-value garbage pyrolysis subsystem and the plastic purification treatment subsystem, and can combine various modes such as biochemical reaction treatment, chemical reaction treatment, physical treatment, manual treatment and the like, so that the comprehensive treatment of the household garbage is realized, and the purpose of recycling is achieved. Because the landfill and the incineration are reduced, the environmental pollution is reduced. In the treatment system, organic matters and small materials generate organic fertilizers and biogas through anaerobic fermentation and aerobic fermentation, the biogas is used for combustion assistance of the high-calorific-value garbage pyrolysis subsystem, high-calorific-value materials and large materials generate hot steam through the high-calorific-value garbage pyrolysis subsystem, the waste heat of the flue gas is used for heating the anaerobic fermentation bin, the generated ash is used for improving the solid content of the fed materials through aerobic fermentation, products of biochemical reaction and chemical reaction are mutually utilized, the emission is reduced, and in addition, plastics and leachate can be effectively recycled and utilized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a household garbage recycling treatment system provided in an embodiment of the present invention;
FIG. 2 is a schematic view of a plastic sand and impurity removal cleaning tank of a household garbage recycling treatment system provided by an embodiment of the invention;
FIG. 3 is a schematic top view of a plastic sand and impurity removal cleaning tank of a household garbage recycling treatment system provided by an embodiment of the invention;
the parts corresponding to each mark in the figure are: 1-a discharge pit; 2-a plate feeder; 3-a first manual sorting deck; 4-bag breaking machine; 5-a belt conveyor; 6-a magnetic separator; 7-eddy current sorting machine; 8-a drum screen; 9-a winnowing machine; 10-bouncing sieve; 11-a plastic sand and impurity removing cleaning pool; 12-a mesh belt conveyor; 13-drying oven; 14-plastic granulator; 15-aerobic roller; 16-a solid-liquid separator; 17-dry anaerobic fermentation chamber; 18-a high calorific value waste pyrolysis subsystem; 19-a crusher; 20-slurry pump; 21-a stirrer; 22-a sand remover; 23-a squeegee transport assembly; 24-high pressure spray wash assembly; 25-a clean plastic temporary storage pit; 26-a striker plate; 27-a filter screen; 28-a liquid level sensor; 29-a water collecting tank; 30-a water inlet pump; 31-a drain pump; 32-water level; 33-second manual sorting deck.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the specific contents of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
As shown in fig. 1, an embodiment of the present invention provides a household garbage recycling treatment system, including:
the system comprises a feeding subsystem, a first conveying mechanism, a sorting subsystem, a dry anaerobic fermentation subsystem, a high-calorific-value garbage pyrolysis subsystem and a plastic purification treatment subsystem; wherein the content of the first and second substances,
the feeding subsystem is respectively provided with a garbage material outlet, a second material outlet and a percolate outlet, and the garbage material outlet is connected with the sorting subsystem through the first conveying mechanism; the percolate outlet is connected with the dry anaerobic fermentation subsystem; the second material outlet is connected with the high-calorific-value garbage pyrolysis subsystem;
the sorting subsystem is respectively provided with a metal recovery outlet, a screen underflow outlet, a heavy material outlet, a screen underflow outlet, a light material outlet, a manual sorting light material outlet and a manual sorting heavy material outlet; the metal recovery outlet is used for being connected with a metal recovery mechanism; the undersize outlet and the heavy material outlet are both connected with the dry anaerobic fermentation subsystem; the undersize heavy object outlet and the manual sorting heavy object outlet are both connected with the high-calorific-value garbage pyrolysis subsystem; the light material outlet and the manual sorting light material outlet are both connected with the plastic purification treatment subsystem;
the dry anaerobic fermentation subsystem is respectively provided with a methane outlet and an ash inlet, and the methane outlet is connected with the high-calorific-value garbage pyrolysis subsystem;
the high calorific value garbage pyrolysis subsystem is provided with an ash outlet and a waste heat utilization outlet, and the ash outlet is connected with an ash inlet of the dry anaerobic fermentation subsystem; the waste heat utilization outlet is connected with the dry anaerobic fermentation subsystem;
the plastic purification treatment subsystem is provided with a plastic raw material outlet and is used for connecting plastic granulation equipment.
In the above processing system, the feed subsystem comprises:
the device comprises a weighing mechanism, a discharge pit 1, a grab bucket, a plate feeder 2, a first manual sorting table, a crusher, a bag breaking machine 4 and a slurry pump 29; wherein the content of the first and second substances,
the weighing mechanism is arranged in front of the discharge pit;
the grabbing hopper is arranged above the discharge pit;
the discharge pit 1 is respectively provided with a percolate outer discharge port and a material outlet, the percolate outer discharge port is connected with the slurry pump 29, and the outlet of the slurry pump 29 is a percolate outlet; the material outlet is connected with the first manual sorting table;
the first manual sorting table is respectively provided with a normal material outlet and a large material outlet, the large material outlet is connected with the crusher, and the discharge end of the crusher is the second material outlet; the normal material outlet is connected with the bag breaking machine 4;
the discharge end of the bag breaking machine 4 is the garbage material outlet.
In the above processing system, the sorting subsystem includes:
a magnetic separator 6, an eddy current separator 7, a drum screen 8, a winnowing machine 9, a bounce screen 10 and a second manual separation table; wherein the content of the first and second substances,
the magnetic separator 6 is sequentially connected with the eddy current separator 7, and a metal discharge port of the eddy current separator 7 is a metal recovery outlet;
the nonmetal discharge hole of the eddy current separator 7 is sequentially connected with the rotary screen 8;
the rotary screen 8 is respectively provided with an oversize material outlet and an undersize material outlet, and the oversize material outlet is sequentially connected with the winnowing machine 9, the bouncing screen 10 and the second manual sorting table;
the winnowing machine 9 is respectively provided with a light material outlet and the heavy material outlet, and the light material outlet is connected with the bounce screen 10;
the bounce screen 10 is respectively provided with an undersize heavy object outlet, the light material outlet and the undersize heavy object outlet, and the undersize heavy object outlet is connected with the second manual sorting table;
the second manual sorting table is respectively provided with the manual sorting light matter outlet and the manual sorting heavy matter outlet.
In the above treatment system, the dry anaerobic fermentation subsystem comprises:
an aerobic roller 15, a solid-liquid separator 16 and a dry anaerobic fermentation bin 17;
the dry anaerobic fermentation bin 17 is respectively connected with an undersize outlet, a heavy material outlet and an undersize heavy material outlet of the sorting subsystem;
the dry anaerobic fermentation bin 17 is connected with a percolate outlet of the feeding subsystem;
the aerobic roller 15 is respectively provided with a biogas residue inlet and the ash residue inlet, the ash residue inlet of the aerobic outlet roller 15 is connected with the ash residue outlet of the high-calorific-value garbage pyrolysis subsystem, and the outlet of the aerobic outlet roller 15 is connected with the solid-liquid separator 16;
the solid-liquid separator 16 is provided with a biogas slurry inlet and an organic fertilizer outlet;
the dry anaerobic fermentation chamber 17 is provided with a biogas slurry outlet, a biogas residue outlet and the biogas outlet, the biogas residue outlet is connected with the biogas residue inlet of the aerobic roller 15, and the biogas slurry outlet is connected with the biogas slurry inlet of the solid-liquid separator 16.
Referring to fig. 2 and 3, in the above processing system, the plastic purification processing subsystem includes:
the device comprises a plastic sand-removing impurity-removing cleaning pool 11, a horizontal stirrer 21, a sand remover 22, a scraper conveying assembly 23, a high-pressure spray-cleaning assembly 24, a clean plastic temporary storage pit 25, a striker plate 26, a filter screen 27, a liquid level sensor 28, a water collecting pool 29, a water inlet pump 30 and a water discharge pump 31; wherein the content of the first and second substances,
the plastic sand and impurity removing cleaning tank 11 is divided into three-grid tank bodies by two partition walls, wherein a horizontal stirrer 21 is arranged on the upper surface in the first grid tank body, and the central line of a stirring shaft of the horizontal stirrer 21 is flush with the water level in the first grid tank body; the sand removing machine 22 is arranged at the bottom in the first cell body;
the upper end of the second grid tank body is provided with a high-pressure spray washing component 24;
the third cell body is a clean plastic temporary storage pit 25, the mesh belt conveyor 12 is arranged in the clean plastic temporary storage pit 25, and the output end of the mesh belt conveyor 12 is a plastic raw material outlet;
the scraper conveying assembly 23 is obliquely arranged above the plastic sand and impurity removing and cleaning tank 11, spans the three-lattice tank body of the plastic sand and impurity removing and cleaning tank 11 and can convey plastics from the first lattice tank body to the third lattice tank body;
the water collecting tank 29 is arranged beside the plastic sand and impurity removing and cleaning tank 11, and three cell bodies of the plastic sand and impurity removing and cleaning tank 11 are connected with the water collecting tank 29 through filter screens;
the water collecting tank 29 is communicated with the bottoms of the first grid tank body and the second grid tank body of the plastic sand and impurity removing cleaning tank 11, and the water levels are the same;
the liquid level sensor 28 is disposed in the water collecting tank 29, and the liquid level sensor 28 is electrically connected to the water inlet pump 30 and the water discharge pump 31 respectively;
the water inlet pump 30 is connected with the high-pressure spray washing assembly 24;
the inlet pipe of the drainage pump 31 is connected with the water collecting tank 29 and the clean plastic temporary storage pit 25 through two branch pipes, valves are arranged on the two branch pipes, and the two valves are interlocking valves.
In the above treatment system, the plastic sand and impurity removing cleaning tank 11 is a rectangular tank body, and the plastic sand and impurity removing cleaning tank 11 is provided with a striker plate 26.
In the above processing system, the method further includes: the plastic granulating equipment consists of a dryer and a plastic granulator 14 which are connected in sequence, wherein the dryer is connected with a plastic raw material outlet of the plastic purification treatment subsystem.
Referring to fig. 1, in the above processing system, the material transmission between the separation subsystem and the dry anaerobic fermentation subsystem is performed by a plate feeder, which is convenient for material transmission.
The processing system of the present invention is described in further detail below with reference to the figures and the detailed description of the embodiments.
As shown in fig. 1 to 3, the treatment system of the invention is mainly formed by connecting a feeding subsystem, a first conveying mechanism, a sorting subsystem, a dry anaerobic fermentation subsystem, a high-calorific-value garbage pyrolysis subsystem and a plastic purification treatment subsystem; the structure mainly comprises: the device comprises a weighing platform, a discharge pit 1, a first manual sorting platform 3, a second manual sorting platform 33 and a plastic sand and impurity removal cleaning pool 11; the equipment mainly comprises: the system comprises a plurality of plate feeders 2, a grab hopper, a bag breaking machine 4, a belt conveyor 5, a magnetic separator 6, an eddy current separator 7, a rotary screen 8, a winnowing machine 9, a bounce screen 10, a mesh belt conveyor 12, a drying furnace 13, a plastic granulator 14, an aerobic roller 15, a solid-liquid separator 16, a dry anaerobic fermentation bin 17, a high-calorific-value garbage pyrolysis subsystem 18, a crusher 19, a slurry pump 20, a horizontal stirrer 21, a sand remover 22, a scraper conveying assembly 23, a high-pressure spray washing assembly 24, a clean plastic temporary storage pit 25, a material baffle 26, a filter screen 27, a liquid level sensor 28, a water collecting tank 29, a water inlet pump 30 and a water discharge pump 31;
wherein, the weighing platform weighs the domestic garbage conveyed by the transport vehicle, the weighed domestic garbage is poured into the discharging pit 1, the rough-filtered garbage is grabbed onto the plate feeder by the grab bucket, the percolate is pumped into the dry anaerobic fermentation bin 17 for anaerobic fermentation by a pipeline provided with a slurry pump 20, the first manual sorting platform 3 and the second manual sorting platform 33 are used for manually sorting the domestic garbage, a negative pressure odor-extracting system is arranged on the top of the plate feeder 2 to improve the manual operation environment, large articles (such as fiber products, foam products, rubber products, packaging paper products, trees, wood products and the like) which are manually sorted are sent into the crusher 19 by the plate feeder 2, the crushed articles are sent into the high calorific value garbage pyrolysis subsystem 18 by the conveyor, the manually sorted glass products and porcelain are additionally arranged outside other processing mechanisms for processing, and other materials enter the bag breaker 4 of the next stage, after the materials enter the bag breaking machine 4, plastic bags and other materials are broken and scattered as much as possible under the action of the rotary cutter shaft, and meanwhile, most of sludge adhered to the surface of the plastic is also fallen off, so that the screening effect of the subsequent process is enhanced; the rubbish after breaking the bag gets into 5 conveyers of band conveyer and carries rotary screen 8, and 5 top installation magnet separators 6 of band conveyer and eddy current sorter 7 metal in detaching rubbish supply recycle, and the oversize thing of rotary screen 8 is the material that the granularity is big a little mainly, if: plastics, wastepaper, fibre and building rubbish, the undersize is the material that specific gravity is big, the granularity is little, if: organic matters, small aggregates, mud ash and the like of fruits and vegetables enter the winnowing machine 9, oversize products enter the dry anaerobic fermentation bin 17 for fermentation, the winnowing machine 9 blows materials with light specific gravity such as plastics and the like into the bounce screen 10, and other materials with a larger specific gravity are as follows: organic matter, small bone material, mud ash get into dry-type anaerobic fermentation storehouse 17 fermentation, and the bounce screen 10 is sieved the thing and is mainly remained plastics after artifical sorting table of second is selected separately, gets into plastics sand removal edulcoration washing tank 11, other material that specific gravity is a bit bigger, if: organic matters, small bone materials and mud ash enter a dry anaerobic fermentation bin 17 for fermentation; a horizontal stirrer 21, a sand remover 22, a scraper plate conveying assembly 23 and a high-pressure spray washing assembly 24 are arranged in the plastic sand removing and impurity removing cleaning pool 11, the plastic is cleaned and then enters a plastic temporary storage pit 25, then falls onto a mesh belt conveyor 12, is filtered, is dried by a dryer and then enters a plastic granulator for granulation, and a baffle plate 26 is arranged above the plastic sand removing and impurity removing cleaning pool 11 because the plastic is easily blown to fly upwards; biogas generated by fermentation of the dry anaerobic fermentation bin 17 is used as fuel of a combustion-supporting system of a garbage pyrolysis furnace of the high-calorific-value garbage pyrolysis subsystem 18, the biogas slurry after fermentation is separated by the solid-liquid separator 16 is used as liquid fertilizer, biogas residues enter the aerobic roller 15 to produce organic fertilizer, and because the aerobic roller 15 requires that inlet materials reach a certain solid content, most of ash and slag generated by the high-calorific-value garbage pyrolysis subsystem 18 are used for making bricks, and a small part of ash and slag can be mixed with the inlet materials of the aerobic roller 15 to improve the temperature and the solid content.
The treatment system of the invention combines various modes of biochemical reaction treatment, chemical reaction treatment, physical treatment, artificial treatment and the like, realizes comprehensive treatment of the household garbage and resource utilization, and mutually utilizes the products of the biochemical reaction and the chemical reaction. Because the landfill and the incineration are reduced, the environmental pollution is reduced. In the treatment system, organic matters and small materials generate organic fertilizers and biogas through anaerobic fermentation and aerobic fermentation, the biogas is used for an incinerator combustion-supporting system, high-calorific-value materials and large materials generate hot steam through a garbage incineration system, the waste heat of the flue gas is used for heating an anaerobic fermentation bin, ash generated by a pyrolysis furnace is used for aerobic fermentation to improve the feeding solid content, products of biochemical reaction and chemical reaction are mutually utilized, the discharge is reduced, and in addition, plastics and leachate can be effectively recycled and utilized.
The steps of the invention for treating the domestic garbage are as follows:
the method comprises the following steps: after being collected, the household garbage is weighed by an electronic wagon balance of a weighing platform through a transport vehicle;
step two: after being weighed, the household garbage is poured into a discharge pit for filtration, and the percolate is conveyed into a dry anaerobic fermentation subsystem through a pipeline and a slurry pump;
step three: the grabbing hopper grabs the coarsely filtered garbage onto the plate feeder, manual sorting tables (capable of adopting sorting steel platforms) are arranged on two sides of the plate feeder, large articles which are conveniently sorted out manually can be conveyed into the crusher through the conveyor, the large articles are conveyed into the high-calorific-value garbage pyrolysis subsystem through the conveyor after being crushed, and other materials enter the bag breaking machine in the next stage;
step four: after the materials enter the bag breaking machine, the plastic is broken and scattered as much as possible under the action of the rotary cutter shaft, and simultaneously most of sludge adhered to the surface of the plastic is also fallen off, so that the screening effect of the subsequent process is enhanced;
step five: before materials scattered by the bag breaker enter a drum screen through a belt conveyor with the width of 1.2 meters and the adjustable speed, firstly, metals mixed in the materials are recovered and sorted to a special collecting mechanism through a magnetic separator and an eddy current separator;
step six: the materials scattered by the bag breaker directly enter a drum screen, and are screened by the drum screen, the light materials are separated from aggregates and organic matters to obtain light materials on the screen with higher purity, and the light materials are sent to a winnowing machine in the next stage for winnowing treatment, and the small aggregates, organic matters and the like under the screen are conveyed to a dry anaerobic fermentation subsystem;
step seven: after the light material enters a winnowing machine, further separating the light material, a middle aggregate and organic matters, conveying the winnowed light material to the bouncing screening treatment of the next stage, and conveying the middle aggregate, the organic matters and the like to a dry anaerobic fermentation subsystem;
step eight: the light material after winnowing directly enters a bouncing sieve, and after being screened by the bouncing sieve, the light material is separated from aggregate and organic matters to obtain the light material on the sieve with higher purity, so that the light material is convenient for resource treatment in the later period, and sand, mud, small aggregate, organic matters and the like under the sieve are sent to a dry anaerobic fermentation subsystem;
step nine: the heavy materials on the sieve screened by the bounce sieve enter a sorting belt conveyor, second manual sorting tables (capable of adopting sorting steel platforms) are arranged on two sides of the conveyor and can be conveniently sorted manually, a garbage can is arranged on the lower portion of each second manual sorting table, the articles sorted manually are placed in the garbage can, other heavy materials enter a garbage pyrolysis subsystem, and light materials on the sieve mainly comprise plastics and are subjected to sand removal and impurity removal in a sand removal pool in the next stage;
step ten: the light materials on the screen mainly comprise plastics, the plastics enter a desanding pool to remove sand and impurities, then the sand and sand or paper scraps adsorbed on the plastics are further separated out, the plastics with higher purity are obtained after high-pressure water washing, cleaning liquid is pumped into a dry anaerobic fermentation system, a filter screen is designed at the inlet of the pump, the paper scraps are pumped out, and the plastics are blocked;
step eleven: after the plastic enters a mesh belt conveyor, further filtering out silt and paper scraps adsorbed on the light material to obtain pure plastic, and entering plastic drying and granulating equipment to obtain reusable plastic particles;
step twelve: sending the percolate obtained in the step two, the undersize material obtained in the step six, the undersize material obtained in the step seven, the undersize material obtained in the step eight and the sewage generated in the step ten into a dry anaerobic fermentation subsystem and then carrying out dry anaerobic fermentation treatment to obtain biogas energy and organic fertilizer;
step thirteen: and (4) conveying the large materials in the third step and the heavy materials in the ninth step to a high-heat-value garbage pyrolysis subsystem to obtain usable thermal energy.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A household garbage recycling treatment system is characterized by comprising:
the system comprises a feeding subsystem, a first conveying mechanism, a sorting subsystem, a dry anaerobic fermentation subsystem, a high-calorific-value garbage pyrolysis subsystem and a plastic purification treatment subsystem; wherein the content of the first and second substances,
the feeding subsystem is respectively provided with a garbage material outlet, a second material outlet and a percolate outlet, and the garbage material outlet is connected with the sorting subsystem through the first conveying mechanism; the percolate outlet is connected with the dry anaerobic fermentation subsystem; the second material outlet is connected with the high-calorific-value garbage pyrolysis subsystem;
the sorting subsystem is respectively provided with a metal recovery outlet, a screen underflow outlet, a heavy material outlet, a screen underflow outlet, a light material outlet, a manual sorting light material outlet and a manual sorting heavy material outlet; the metal recovery outlet is used for being connected with a metal recovery mechanism; the undersize outlet and the heavy material outlet are both connected with the dry anaerobic fermentation subsystem; the undersize heavy object outlet and the manual sorting heavy object outlet are both connected with the high-calorific-value garbage pyrolysis subsystem; the light material outlet and the manual sorting light material outlet are both connected with the plastic purification treatment subsystem;
the dry anaerobic fermentation subsystem is respectively provided with a methane outlet and an ash inlet, and the methane outlet is connected with the high-calorific-value garbage pyrolysis subsystem;
the high calorific value garbage pyrolysis subsystem is provided with an ash outlet and a waste heat utilization outlet, and the ash outlet is connected with an ash inlet of the dry anaerobic fermentation subsystem; the waste heat utilization outlet is connected with the dry anaerobic fermentation subsystem;
the plastic purification treatment subsystem is provided with a plastic raw material outlet and is used for connecting plastic granulation equipment.
2. The household garbage recycling treatment system according to claim 1, wherein the feeding subsystem comprises:
the automatic material-breaking machine comprises a weighing mechanism, a discharge pit (1), a grab bucket, a plate feeder (2), a first manual sorting table, a crusher, a bag breaking machine (4) and a slurry pump (29); wherein the content of the first and second substances,
the weighing mechanism is arranged in front of the discharge pit;
the grabbing hopper is arranged above the discharge pit;
the discharge pit (1) is respectively provided with a percolate outer discharge port and a material outlet, the percolate outer discharge port is connected with the slurry pump (29), and the outlet of the slurry pump (29) is a percolate outlet; the material outlet is connected with the first manual sorting table;
the first manual sorting table is respectively provided with a normal material outlet and a large material outlet, the large material outlet is connected with the crusher, and the discharge end of the crusher is the second material outlet; the normal material outlet is connected with the bag breaking machine (4);
the discharge end of the bag breaking machine (4) is the garbage material outlet.
3. The household garbage recycling treatment system according to claim 1, wherein the sorting subsystem comprises:
a magnetic separator (6), an eddy current separator (7), a drum sieve (8), a winnowing machine (9), a bounce sieve (10) and a second manual separation table; wherein the content of the first and second substances,
the magnetic separator (6) is sequentially connected with the eddy current separator (7), and a metal discharge port of the eddy current separator (7) is a metal recovery outlet;
the nonmetal discharge hole of the eddy current separator (7) is sequentially connected with the rotary screen (8);
the rotary screen (8) is respectively provided with an oversize material outlet and an undersize material outlet, and the oversize material outlet is sequentially connected with the winnowing machine (9), the bouncing screen (10) and the second manual sorting table;
the winnowing machine (9) is respectively provided with a light material outlet and the heavy material outlet, and the light material outlet is connected with the bounce screen (10);
the bounce screen (10) is respectively provided with an undersize heavy object outlet, the light material outlet and the undersize heavy object outlet, and the undersize heavy object outlet is connected with the second manual sorting table;
the second manual sorting table is respectively provided with the manual sorting light matter outlet and the manual sorting heavy matter outlet.
4. The recycling system for household garbage according to any one of claims 1 to 3, wherein the dry anaerobic fermentation subsystem comprises:
an aerobic roller (15), a solid-liquid separator (16) and a dry anaerobic fermentation chamber (17);
the dry anaerobic fermentation bin (17) is respectively connected with an undersize outlet, a heavy material outlet and an undersize heavy material outlet of the sorting subsystem;
the dry anaerobic fermentation bin (17) is connected with a percolate outlet of the feeding subsystem;
the aerobic roller (15) is respectively provided with a biogas residue inlet and the ash residue inlet, the ash residue inlet of the aerobic outlet roller (15) is connected with the ash residue outlet of the high-calorific-value garbage pyrolysis subsystem, and the outlet of the aerobic outlet roller (15) is connected with the solid-liquid separator (16);
the solid-liquid separator (16) is provided with a biogas slurry inlet and an organic fertilizer outlet;
the dry anaerobic fermentation bin (17) is provided with a biogas slurry outlet, a biogas residue outlet and the biogas outlet, the biogas residue outlet is connected with the biogas residue inlet of the aerobic roller (15), and the biogas slurry outlet is connected with the biogas slurry inlet of the solid-liquid separator (16).
5. The household garbage recycling treatment system according to any one of claims 1 to 3, wherein the plastic purification treatment subsystem comprises:
the device comprises a plastic sand removing and impurity removing cleaning pool (11), a horizontal stirrer (21), a sand removing machine (22), a scraper conveying assembly (23), a high-pressure spray cleaning assembly (24), a clean plastic temporary storage pit (25), a material baffle plate (26), a filter screen (27), a liquid level sensor (28), a water collecting pool (29), a water inlet pump (30) and a water discharge pump (31); wherein the content of the first and second substances,
the plastic sand and impurity removing cleaning pool (11) is divided into three-grid pool bodies by two partition walls, wherein a horizontal stirrer (21) is arranged on the upper surface in the first grid pool body, and the central line of a stirring shaft of the horizontal stirrer (21) is flush with the water level in the first grid pool body; the sand removing machine (22) is arranged at the bottom in the first cell body;
the upper end of the second grid tank body is provided with a high-pressure spray washing component (24);
the third cell body is a clean plastic temporary storage pit (25), the mesh belt conveyor (12) is arranged in the clean plastic temporary storage pit (25), and the output end of the mesh belt conveyor (12) is a plastic raw material outlet;
the scraper conveying assembly (23) is obliquely arranged above the plastic sand and impurity removing and cleaning pool (11), spans the three-grid pool body of the plastic sand and impurity removing and cleaning pool (11), and can convey plastics from the first grid pool body to the third grid pool body;
the water collecting tank (29) is arranged beside the plastic sand and impurity removing and cleaning tank (11), and three cell bodies of the plastic sand and impurity removing and cleaning tank (11) are connected with the water collecting tank (29) through filter screens;
the water collecting tank (29) is communicated with the bottoms of the first grid tank body and the second grid tank body of the plastic sand and impurity removing cleaning tank (11), and the water levels are the same;
the liquid level sensor 28 is arranged in the water collecting tank (29), and the liquid level sensor (28) is electrically connected with the water inlet pump (30) and the water discharge pump (31) respectively;
the water inlet pump 30 is connected with the high-pressure spray washing assembly (24);
an inlet pipe of the drainage pump (31) is connected with the water collecting tank (29) and the clean plastic temporary storage pit (25) through two branch pipes, valves are arranged on the two branch pipes, and the two valves are interlocking valves.
6. A recycling treatment system for household garbage according to claim 5, characterized in that the plastic sand and impurity removing cleaning pool (11) is a rectangular pool body, and a material baffle plate (26) is arranged on the plastic sand and impurity removing cleaning pool (11).
7. The household garbage recycling treatment system according to any one of claims 1 to 3, further comprising: the plastic granulating equipment consists of a dryer and a plastic granulator (14) which are connected in sequence, wherein the dryer is connected with a plastic raw material outlet of the plastic purification treatment subsystem.
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| CN202010500948.9A CN111589848A (en) | 2020-06-04 | 2020-06-04 | Household garbage recycling treatment system |
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| CN202010500948.9A CN111589848A (en) | 2020-06-04 | 2020-06-04 | Household garbage recycling treatment system |
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Cited By (1)
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| CN113600594A (en) * | 2021-07-29 | 2021-11-05 | 杭州盛得新材料有限公司 | Fabric laminate system with recovered and modified RPET and preparation method thereof |
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