CN114918227B - Anaerobic fermentation pretreatment system for kitchen waste - Google Patents
Anaerobic fermentation pretreatment system for kitchen waste Download PDFInfo
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- CN114918227B CN114918227B CN202210581054.6A CN202210581054A CN114918227B CN 114918227 B CN114918227 B CN 114918227B CN 202210581054 A CN202210581054 A CN 202210581054A CN 114918227 B CN114918227 B CN 114918227B
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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
- 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
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention relates to a kitchen waste anaerobic fermentation pretreatment system which comprises a pretreatment subsystem, a deodorizing subsystem and a sewage treatment subsystem. The pretreatment subsystem comprises a receiving device, a coarse crusher, a magnetic separator, a butterfly screen, a biomass crushing separator and an extrusion dehydrator which are connected in sequence. The material receiving device, the coarse crusher, the butterfly screen, the biomass crushing separator and the extrusion dehydrator are all provided with sealing covers, the sealing covers are provided with exhaust ports, and the exhaust ports are connected with the deodorizing subsystem; the bottom of receiving device, rough crusher, butterfly screen, biomass crushing separator and extrusion dehydrator all is provided with the water catch bowl, and the water catch bowl is connected with the sealed cowling and is formed sealed storehouse, and the water catch bowl is connected with the effluent water sump. The whole process of garbage after entering the treatment system is to drain water and collect in an organized way through the water collecting tank, so that the sewage is prevented from leaking. The sealing cover is in butt joint with the water collecting tank to form a sealing bin, harmful gas is prevented from diffusing into the air, and the odor treatment subsystem is used for carrying out harmless treatment on the odor.
Description
Technical Field
The invention relates to the technical field of kitchen waste treatment, in particular to a kitchen waste anaerobic fermentation pretreatment system.
Background
Kitchen garbage mainly refers to raw materials and finished products (cooked foods) or residues which are needed in household life diet, and comprises leftovers, vegetable leaves, fruit peels, eggshells, tea residues, bones, shells and the like. Including fruit and vegetable garbage in vegetable market. The kitchen waste has the following characteristics: 1) The impurities are more, and the content of organic matters is high; 2) Easy to rot and deteriorate, easy to ferment and easy to smell; 3) Can easily grow parasites, eggs, pathogenic microorganisms, mycotoxins and other harmful substances. 4) The kitchen waste is mainly raw material, and has low oil content; 5) The kitchen garbage is mainly wrapped in the plastic bag, and the specific gravity is light. The domestic kitchen garbage plastic bags are large in wrapping quantity, the volume-weight ratio is generally 0.3-0.6, the water content of organic matters is high (the organic matters exist in a saturated water form), most kitchen garbage classified in families is packaged by plastic bags, the impurities are large, the material quality is difficult to control, and the kitchen garbage plastic bags also comprise household garbage articles such as partial ceramic dish utensils, soy sauce bottles, wine bottle glassware, sand and stone bricks, metal waste articles and the like and flexible and easily-wound materials such as some cloth fabrics and the like. Due to the characteristics of kitchen waste, the existing kitchen waste treatment equipment is extremely easy to generate clamping stagnation and winding in the operation process, so that the operation efficiency of the equipment is reduced; in addition, because kitchen waste is piled up and rotten for a long time, a large amount of waste water and odor can be generated in the treatment process, and the environment around the waste water and odor is destroyed because the waste water and the odor cannot be effectively treated, so that the human health is affected.
Disclosure of Invention
First, the technical problem to be solved
In view of the above-mentioned shortcomings and disadvantages of the prior art, the invention provides a kitchen waste anaerobic fermentation pretreatment system, which solves the technical problem that wastewater and odor cannot be treated intensively in the kitchen waste treatment process.
(II) technical scheme
In order to achieve the above purpose, the anaerobic fermentation pretreatment system for kitchen waste of the invention comprises:
a pretreatment subsystem, a deodorizing subsystem and a sewage treatment subsystem;
the pretreatment subsystem comprises a receiving device, a coarse crusher, a magnetic separator, a butterfly screen, a biomass crushing separator and an extrusion dehydrator which are connected in sequence;
the sewage treatment subsystem comprises a sewage tank and a filtering mechanism, and the filtering mechanism is connected with the sewage tank;
the material receiving device, the coarse crusher, the butterfly screen, the biomass crushing separator and the extrusion dehydrator are all provided with sealing covers, the sealing covers are provided with exhaust ports, and the exhaust ports are connected with the deodorizing subsystem; the receiving device, the coarse crusher, the butterfly screen, the biomass crushing separator and the extrusion dehydrator are all provided with water collecting tanks at the bottoms, the water collecting tanks are connected with the sealing cover to form a sealing bin, and the water collecting tanks are connected with the sewage pool.
Optionally, the extrusion dehydrator comprises a blanking bin, a receiving bin, a compression pushing head device, a first sealing cover and a first water collecting tank;
the inlet of the blanking bin is connected with a blanking port, the outlet of the blanking bin is connected with the receiving bin, a plurality of water leakage holes are uniformly formed in the bottom plate of the receiving bin, and the aperture of each water leakage hole is 15-30 mm;
the compression bin is connected with the receiving bin, and the compression pushing head device can push materials in the receiving bin into the compression bin for extrusion and dehydration;
the first water collecting tank is connected with the first sealing cover to form a first sealing bin, and the receiving bin and the compression bin are both arranged in the first sealing bin; the bottom of the first water collecting tank is provided with a first sewage outlet, and the first sewage outlet can be connected with the sewage pool.
Optionally, the compression bin comprises a cavity, a first gate mechanism, a second gate mechanism and a drainage mechanism;
the first end and the second end of the cavity are both openings, and the receiving bin is connected with the second end of the cavity;
the first gate mechanism and the second gate mechanism are both arranged at the first end of the cavity, and the second gate mechanism is positioned between the first gate mechanism and the second end of the cavity;
A plurality of first water filtering holes are formed in the bottom plate and the side plate of the cavity, the first water filtering holes are located between the second gate mechanism and the second end of the cavity, the diameter of the first water filtering holes in the bottom plate of the cavity is 12-16 mm, and the diameter of the first water filtering holes in the side plate of the cavity is 10-14 mm;
a drain hole is further formed in the bottom plate of the cavity, and the drain hole is positioned between the first gate mechanism and the second gate mechanism;
the drainage mechanism is arranged on the bottom plate of the cavity body, and the drainage mechanism can open or close the drainage hole.
Optionally, the first gate mechanism includes a sealing gate and a first driving component, the sealing gate is slidably disposed at an opening at the first end of the cavity, and the first driving component is connected with the sealing gate;
the second gate mechanism comprises a stressed gate and a second driving assembly, the stressed gate is arranged between the sealing gate and the second end of the cavity in a sliding manner, and the second driving assembly is connected with the stressed gate; the stress gate is provided with a plurality of second water filtering holes, and the aperture of each second water filtering hole is 5-15 mm;
The drainage mechanism comprises a drainage door and a third driving assembly, the drainage door is arranged on the lower surface of the bottom plate of the cavity in a sliding mode, the third driving assembly is connected with the drainage door, and the drainage door can open or close the drainage hole.
Optionally, the extrusion dehydrator further comprises a material returning mechanism, wherein the material returning mechanism comprises a material returning screw machine and a scraper machine;
the first water collecting tank is funnel-shaped, a first sewage outlet is arranged at the bottom end of the first water collecting tank, the sewage pool is connected with the first sewage outlet, and a filter screen is arranged on the first sewage outlet;
the inlet of the returning material screw machine is connected with the first water collecting tank, the outlet of the returning material screw machine is connected with the feeding port of the scraper machine, and the discharging port of the scraper machine is connected with the blanking bin.
Optionally, the deodorizing subsystem comprises a tower body, a spraying device and a cleaning device;
the bottom of the tower body is provided with an air inlet, the top of the tower body is provided with an air outlet, and the air outlets are all connected with the air inlet;
a plurality of filtering baffle plates are arranged in the tower body at intervals along the up-down direction, and the upper part of each filtering baffle plate is filled with filler;
The spraying device comprises a plurality of spraying mechanisms, one spraying mechanism is arranged above at least one layer of filler, and the spraying mechanism can spray liquid to the filler;
the cleaning device comprises a plurality of spray washing mechanisms, a plurality of stirring mechanisms, a first liquid supply mechanism and a first liquid storage tank; each filter baffle's below all is provided with one spray rinsing mechanism, spray rinsing mechanism can with liquid injection the top of filter baffle on the packing, rabbling mechanism buries in the packing, rabbling mechanism can stir the packing.
The inlet of the first liquid supply mechanism is communicated with the first liquid storage tank, and a plurality of spray washing mechanisms are connected with the first liquid supply mechanism.
Optionally, the spray washing mechanism comprises a first liquid supply branch pipe and a plurality of first spray heads;
the first liquid supply branch pipe is arranged below the filtering baffle plate and is connected with the first liquid supply mechanism;
the first spray heads are connected with the first liquid supply branch pipe, a plurality of filtering holes are formed in the filtering partition plate, the first spray heads are located in the filtering holes, and the openings of the first spray heads face upwards.
Optionally, the spraying device further comprises a second liquid supply mechanism, wherein the second liquid supply mechanism comprises a spraying liquid supply pump, a spraying liquid supply pipe and a second liquid storage tank;
the inlet of the spraying liquid supply pump is connected with the second liquid storage tank, and the outlet of the spraying liquid supply pump is connected with the spraying liquid supply pipe;
the spraying mechanism comprises a second liquid supply branch pipe and a plurality of second spray heads;
the second liquid supply branch pipe is arranged above at least one layer of filler and is connected with the spraying liquid supply pipe;
and the second spray heads are connected with the second liquid supply branch pipe, and the openings of the second spray heads face downwards.
Optionally, the filtering mechanism comprises a bag filter and an ultrafiltration membrane tube;
the ultrafiltration membrane tube comprises a shell and a filter screen, wherein the shell is a hollow cylinder, the filter screen is arranged in the shell, an included angle between the filter screen and the end face of the shell is larger than 0 degrees and smaller than 90 degrees, and the filter screen divides the interior of the shell into a liquid inlet cavity and a liquid outlet cavity;
the shell comprises a first end face, a second end face and a side wall connecting the first end face and the second end face;
the first end face is connected with a water inlet end pipeline, the second end face is provided with a water outlet end pipeline, an inlet of the water inlet end pipeline is connected with the bag filter, an outlet of the water inlet end pipeline is connected with the liquid inlet cavity, and an inlet of the water outlet end pipeline is connected with the liquid outlet cavity;
The side wall is provided with a first flushing hole and a second flushing hole along the radial direction, the inlets of the first flushing hole and the second flushing hole are connected with a flushing water pipeline, the outlet of the first flushing hole is communicated with the liquid inlet cavity, and the outlet of the second flushing hole is communicated with the liquid outlet cavity.
Optionally, the receiving device, the coarse crusher, the magnetic separator, the butterfly screen, the biomass crushing separator and the extrusion dehydrator are sequentially connected through a feeding screw, and the feeding screw is connected with the sewage tank through a liquid discharge pipe.
(III) beneficial effects
The sewage treatment subsystem comprises a sewage tank and a filtering mechanism, wherein the filtering mechanism is connected with the sewage tank and is used for carrying out centralized treatment on the wastewater filtered by each device, and no pollution is discharged. The material receiving device, the coarse crusher, the butterfly screen, the biomass crushing separator and the extrusion dehydrator are all provided with sealing covers, and the sealing covers are used for collecting harmful gases volatilized out of various equipment, such as ammonia, hydrogen sulfide, amines and the like. The sealing cover is provided with an exhaust port, and the exhaust port is connected with the deodorizing subsystem and is subjected to harmless treatment through the deodorizing subsystem. The bottom of receiving device, coarse crusher, butterfly sieve, living beings crushing separator and extrusion hydroextractor all is provided with the water catch bowl, and the water catch bowl is connected with the sealed cowling and is formed sealed storehouse, and the water catch bowl is connected with the effluent water sump, and equipment seals in sealed storehouse, can prevent that the foul smell from diffusing to the air in, can collect and centralized processing waste water again. In the whole process of the garbage after entering the treatment system, the drained water is collected in an organized way through each water collecting tank, so that the phenomenon of 'running off and leaking' of sewage is avoided. The equipment is provided with the sealing cover, the sealing cover and the water collecting tank are in butt joint to form a sealing bin, harmful gas is prevented from being directly diffused into the air to pollute the environment, and the environment is effectively protected through harmless treatment of the odor treatment subsystem. The conveying device adopts airtight equipment, a bad smell discharge port is reserved, and the bad smell port is connected with a bad smell treatment subsystem. The whole system adopts mechanized equipment, reduces personnel configuration, and effectively reduces personnel labor intensity.
Drawings
FIG. 1 is a schematic structural view of a kitchen waste anaerobic fermentation pretreatment system of the invention;
FIG. 2 is a schematic structural diagram of an extrusion dehydrator of the kitchen waste anaerobic fermentation pretreatment system;
FIG. 3 is a schematic diagram of the deodorizing subsystem of the anaerobic fermentation pretreatment system for kitchen waste;
FIG. 4 is a schematic structural view of an ultrafiltration membrane tube of the kitchen waste anaerobic fermentation pretreatment system;
fig. 5 is a schematic diagram of the internal structure of an ultrafiltration membrane tube of the kitchen waste anaerobic fermentation pretreatment system.
[ reference numerals description ]
100: a deodorizing subsystem;
1: a tower body; 11: an air inlet; 12: a sewage outlet; 13: an air outlet; 14: an access opening; 2: a filtering baffle; 3: a filler; 41: a first reservoir; 42: a first liquid supply branch pipe; 43: a first nozzle; 44: a spray washing liquid supply pump; 45: spray washing the liquid supply pipe; 51: a stirring motor; 52: a stirring shaft; 53: an impeller; 54: spraying a liquid supply pump; 55: a spray liquid supply pipe; 56: a second liquid storage tank; 57: a second liquid supply branch pipe; 58: and a second nozzle.
200: a sewage treatment subsystem;
201: a sewage pool; 202: a housing; 203: a filtering membrane; 204: a first end face; 205: a second end face; 206: a sidewall; 207: a water inlet end pipeline; 208: a water outlet end pipeline; 209: a first flushing hole; 210: a second flushing hole;
300: a preprocessing subsystem 3;
301: a receiving device; 302: a coarse crusher; 303: a magnetic separator; 304: a butterfly screen; 305: a biomass crushing separator; 306: an extrusion dehydrator; 307: a feeding screw;
361: a blanking bin; 362: a receiving bin; 363: a compression bin; 364: compression pusher means; 365: a first water collection sump; 366: a first drain outlet; 367: a first gate mechanism; 368: a second gate mechanism; 369: a drainage mechanism; 370: a return screw; 371: and a scraper.
Detailed Description
The invention will be better explained for understanding by referring to the following detailed description of the embodiments in conjunction with the accompanying drawings. Wherein references herein to "upper", "lower", "etc. are made with reference to the orientation of fig. 1.
While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1, the invention provides an anaerobic fermentation pretreatment system for kitchen waste, which comprises a pretreatment subsystem 300, a deodorizing subsystem 100 and a sewage treatment subsystem 200, wherein the pretreatment subsystem 300 is used for crushing, screening and squeezing and dehydrating the kitchen waste. The pretreatment subsystem 300 comprises a receiving device 301, a coarse crusher 302, a magnetic separator 303, a butterfly screen 304, a biomass crushing separator 305 and an extrusion dehydrator 306 which are sequentially connected. The receiving device 301, the coarse crusher 302, the magnetic separator 303, the butterfly screen 304, the biomass crushing separator 305 and the extrusion dehydrator 306 are sequentially connected through the feeding screw 307, a liquid discharge pipe connected with the sewage tank 201 is arranged at the bottom of the feeding screw 307, and wastewater leaked from the feeding screw 307 is conveyed to the sewage tank 201 through the liquid discharge pipe for centralized treatment. The receiving device 301 is used for receiving kitchen waste transported to the pretreatment subsystem 300, and performing preliminary filtration on the kitchen waste to remove part of water in the kitchen waste. The staggered crusher is used for crushing the bagged materials, and meanwhile, coarsely crushing the materials to crushed materials with the particle size of about 300 mm. The magnetic separator 303 is used for recycling ferromagnetic substances, so that abrasion of the rear-end equipment caused by the substances can be avoided. The magnetic circuit inside the magnetic separator 303 adopts a computer simulation design, has a perfect double-magnetic pole structure, and ensures that the whole machine can run for a long time without faults in a severe environment. The butterfly screen 304 is used to remove the easily entangled objects in the material and avoid affecting the whole pretreatment system. The butterfly screen 304 can separate uncontrollably wound and uneasy to crush materials in kitchen waste crushed by the crusher, and has good protection effect on the rear-end biomass crushing separator 305 and the extrusion dehydrator 306. And transferring the large sundries screened by the butterfly screen 304 to an incineration plant for incineration treatment. The screen (mesh) of the biomass disruption separator 305 is a dynamic rotating structure that breaks down the rotating material ring, which makes it unique in the industry by virtue of its high throughput and good separation efficiency. The functions of crushing and fine separation are integrated, the impurity removal rate of the biomass crushing separator 305 is high, and the loss rate of organic matters is low. The knife is made of wear-resistant materials, and has good wear resistance and long service life. The screen mesh can be conveniently replaced, and the characteristics of different materials are met, wherein the screen mesh comprises various materials with different shapes and qualities. The refining degree of the organic materials can separate the fiber materials and the slurry which are difficult to crush through different changes of the meshes of the sieve, thereby greatly reducing the floaters of the organic materials. The spray water pipeline is designed, so that a user can more conveniently and selectively add spray water and clean equipment. The utilization of water resources is reduced, and the energy is saved and the consumption is reduced. The hydraulic follow-up riding wheel can adjust the tightness of the riding wheel in real time according to the running condition of the equipment, so that the running of the equipment is ensured to be always in a proper position, and the efficiency and the energy conservation are realized. The squeeze dehydrator 306 is used to squeeze and dehydrate the classified undersize material, and to squeeze out as much free water as possible from the material by the extruder. And transferring the extruded solid slag to an incineration plant for incineration treatment.
The sewage treatment subsystem 200 comprises a sewage tank 201 and a filtering mechanism, wherein the filtering mechanism is connected with the sewage tank 201 and is used for carrying out centralized treatment on the wastewater filtered by each device, and no pollution is discharged. The receiving device 301, the coarse crusher 302, the butterfly screen 304, the biomass crushing separator 305 and the extrusion dehydrator 306 are all provided with sealing covers, and the sealing covers are used for collecting harmful gases volatilized out of various devices, such as ammonia, hydrogen sulfide, amines and the like. The sealing cover is provided with an exhaust port, the exhaust port is connected with the deodorizing subsystem 100 through an air extracting pump, and harmless treatment is carried out through the deodorizing subsystem 100. The bottom of receiving device 301, rough crusher 302, butterfly screen 304, biomass crushing separator 305 and extrusion hydroextractor 306 all is provided with the water catch bowl, and the water catch bowl is connected with the sealed cowling and forms sealed storehouse, and the water catch bowl is connected with effluent water sump 201, and equipment seals in sealed storehouse, can prevent that the foul smell from diffusing to the air, can collect and centralized processing waste water again. In the whole process of the garbage after entering the treatment system, the drained water is collected in an organized way through each water collecting tank, so that the phenomenon of 'running off and leaking' of sewage is avoided. The equipment is provided with the sealing cover, the sealing cover and the water collecting tank are in butt joint to form a sealing bin, harmful gas is prevented from being directly diffused into the air to pollute the environment, and the environment is effectively protected through harmless treatment of the odor treatment subsystem. The conveying device adopts airtight equipment, a bad smell discharge port is reserved, and the bad smell port is connected with a bad smell treatment subsystem. The whole system adopts mechanized equipment, reduces personnel configuration, and effectively reduces personnel labor intensity.
As shown in fig. 2, the squeeze dehydrator 306 comprises a blanking bin 361, a receiving bin 362, a compression bin 363, a compression pusher device 364, a first seal housing, and a first water collection sump 365. The inlet has been seted up at the top of blanking storehouse 361, and the entrance is connected with the feed opening, and the feed opening is kitchen garbage collection car pouring opening, and the feed opening is the funnel form, improves unloading efficiency. The bottom of blanking bin 361 is offered in the export, and blanking bin 361's export is connected with receiving bin 362, evenly has offered a plurality of holes that leak on receiving bin 362's the bottom plate, and the aperture that leaks the hole is 15mm ~ 30mm, preferably 22mm, preliminary filtration free state water when kitchen garbage gets into the receiving cavity through blanking district. An inlet is formed in the top of the compression bin 363, the inlet is connected with the receiving bin 362, the compression pushing head device 364 is arranged on one side of the receiving bin 362, and kitchen waste is pushed into the compression cavity to be pressed through the compression pushing head device 364 after single discharging of the kitchen waste is completed. The compression pushing head device 364 comprises a pushing head and a hydraulic cylinder, wherein the hydraulic cylinder drives the pushing head to move, so that kitchen waste in the receiving bin 362 is transversely pushed into the compression bin 363, and the kitchen waste in the compression bin 363 is extruded and dehydrated through continuous extrusion. The first water collecting tank 365 is connected with the first sealing cover to form a first sealing bin, the receiving bin 362 and the compression bin 363 are both arranged in the first sealing bin, a first drain outlet 366 is formed in the bottom of the first water collecting tank 365, and the first drain outlet 366 can be connected with the sewage tank 201. When kitchen waste enters the compression cavity, percolate is discharged into the sewage tank 201 through the first sewage outlet 366 and the corresponding pipeline, and when the kitchen waste is compressed, the first sewage outlet 366 is switched to the biomass conveying pipeline. Preferably, a crusher is arranged between the outlet of the blanking port and the inlet of the blanking bin 361, kitchen waste enters a crushing cavity of the crusher through the blanking port, a double-shaft crusher is transversely arranged in a crushing area of the crusher, the crusher is a gear hobbing type crusher, and a hydraulic motor is adopted for power driving. A blanking bin 361 is arranged below the crushing area of the crusher, the blanking bin 361 is connected with a receiving bin 362, and kitchen garbage is crushed by the crusher and enters the receiving bin 362 through the blanking bin 361. The right side of the receiving bin 362 is provided with a compression pushing head, the outside of the compression pushing head is provided with a sealing box frame, and the tail of the compression pushing head is provided with an inclined ladder which is used for entering the rear side of the receiving bin 362, so that the maintenance and equipment cleaning are convenient. The whole extrusion dehydrator 306 is stressed on weighing sensors and sensor bases arranged below, the number of the weighing sensors and the sensor bases is 4, and the weighing sensors and the sensor bases are uniformly arranged, so that the stress is balanced.
As shown in fig. 2, compression cartridge 363 includes a cavity, a first gate mechanism 367, a second gate mechanism 368, and a drain mechanism 369. The first and second ends of the cavity are both open, and a receiving bin 362 is connected to the second end of the cavity. The first and second gate mechanisms 367 and 368 are both disposed at the first end of the cavity, and the second gate mechanism 368 is located between the first gate mechanism 367 and the second end of the cavity. The bottom plate and the side plate of the cavity are provided with a plurality of first water filtering holes, the first water filtering holes are positioned between the second gate mechanism 368 and the second end of the cavity, the diameter of the first water filtering holes on the bottom plate of the cavity is 12 mm-16 mm, preferably 14mm, and the diameter of the first water filtering holes on the side plate of the cavity is 10 mm-14 mm, preferably 12mm. In the process of extruding kitchen waste in the cavity, the press filtrate flows out from the first water filtering holes on the bottom plate and the side plates, so that the discharge efficiency of the press filtrate is effectively improved, and the first water filtering holes are prevented from being blocked. The bottom plate of the cavity is also provided with a drain hole, and the drain hole is positioned between the first gate mechanism 367 and the second gate mechanism 368. The drain mechanism 369 is disposed on the bottom plate of the cavity, and the drain mechanism 369 can open or close the drain hole. The press filtrate that entered the gap between the first shutter mechanism 367 and the second shutter mechanism 368 is discharged through the drain hole.
Specifically, the first shutter mechanism 367 includes a sealing shutter slidably disposed at the opening of the first end of the cavity and a first driving assembly connected to the sealing shutter to drive the sealing shutter to move up and down, thereby opening or closing the opening of the first end of the cavity. The second gate mechanism 368 includes atress gate and second drive assembly, and the atress gate slides and sets up between the second end of sealed gate and cavity, and second drive assembly is connected with the atress gate to drive atress gate up-and-down motion, through with sealed gate cooperation, opens or close the first end opening of cavity, first drive assembly and second drive assembly are the pneumatic cylinder. A plurality of second drainage holes have evenly been seted up on the atress gate, and two spaces of second drainage hole intercommunication atress gate, when carrying out the filter-pressing, filter-pressing liquid leak out through first drainage hole and second drainage hole, have increased the drainage function of gate, improve leakage efficiency, can also avoid simultaneously that the drainage hole is blockked up, get into the filter-pressing liquid between sealed gate and the atress gate and pass through the wash port discharge. The drain mechanism 369 includes a drain door and a third driving assembly, the third driving assembly is a hydraulic cylinder, the drain door is slidably disposed on a lower surface of the bottom plate of the cavity, the third driving assembly is connected with the drain door to drive the drain door to move, and the drain door can open or close the drain hole. The drainage gate can be opened or closed through the transverse pushing oil cylinder, and the filtrate pressed in the squeezing process can be directly discharged through the drainage hole when the drainage gate is opened.
As shown in fig. 2, the press dewaterer 306 further comprises a return mechanism comprising a return screw 370 and a scraper 371. The first water catch bowl 365 is the funnel form, and the bottom of first water catch bowl 365 is provided with first drain 366, and effluent water sump 201 is connected with first drain 366, is provided with the filter screen on the first drain 366 for the waste water that collects first water catch bowl 365 filters. The inlet of the returning charge screw 370 is connected with the first water collecting tank 365, the outlet of the returning charge screw 370 is connected with the feeding port of the scraper 371, and the discharging port of the scraper 371 is connected with the blanking bin 361. The filter residue filtered in the first water collecting tank 365 is transferred to the receiving bin 362 by the return screw 370 and the scraper 371 to be pressed again for the second time. Specifically, except the top, all three sides of receiving cavity and compression cavity are provided with seal structure to this seal structure who forms is sealed storehouse, can set up a plurality of returning charge screw machines 370 and carry the filter residue according to specific circumstances. Two rows of screw machines are connected to the bottom of the sealing bin and are marked as a first longitudinal screw machine and a second longitudinal screw machine, and the screw machines are arranged in a left-low right-high mode. The filter pressing liquid entering the sealed bin overflows to a first drain outlet 366 at the lowest end, enters a sewage treatment system for treatment through the first drain outlet 366, the filter residue part is conveyed to a first transverse screw machine through a first longitudinal screw machine and a second longitudinal screw machine, the filter residue is conveyed to a scraper machine 371 through the first transverse screw machine, the filter residue enters a second transverse screw machine through the conveying function of the scraper machine 371, and then enters a blanking bin 361 through the conveying of the second transverse screw machine for secondary squeezing treatment. The combined design of the returning screw 370 and the scraper 371 realizes the automatic secondary recovery treatment of the filter residues of the pressed filtrate.
As shown in fig. 3, the deodorizing subsystem 100 includes a tower 1, a spray system, and a cleaning system. A plurality of filtering baffle plates 2 are arranged in the tower body 1 along the vertical direction at intervals, the inner space of the tower body 1 is divided into a plurality of relatively independent spaces by the plurality of filtering baffle plates, each independent space separated by the filtering baffle plates 2 is filled with a filler 3, the contact surface between the gas and the liquid sprayed by the spraying system is increased, and then the dust removal and deodorization effects are improved. The spraying system comprises a plurality of spraying devices, one spraying device is arranged above at least one layer of filler 3 and used for spraying liquid on the filler 3 at the lower side, gas enters the tower body 1 from the bottom of the tower body 1 and is discharged from the top of the tower body 1, the spraying device sprays dedusting and deodorizing liquid downwards from the lower side of the filtering baffle plate 2, the dedusting and deodorizing liquid can be alkaline liquid or acidic liquid, and different liquid types can be selected according to different components in the gas. The tower body 1 is arranged into a multi-stage spraying structure through a plurality of clapboards, and the gas flowing into each stage is dedusted and deodorized step by step, so that the dedusting and deodorizing effects are effectively improved. The cleaning system is mainly used for cleaning the filler 3 and the inner wall of the cylinder body, and comprises a plurality of spray washing devices and a plurality of stirring devices, and the spray washing device is arranged below each filtering baffle 2 and is used for spraying cleaning agents into the filler 3 on the filtering baffle. The stirring device is buried in the filler 3, the stirring device is used for stirring the filler 3, scattering dust or crystals adhered to the filler 3, and through mutual friction between the filler 3 and between the filler 3 and the inner wall of the barrel, the dust and crystals and the like remained on the filler 3 are washed down from the filler 3 by matching with the cleaning agent and the flushing effect sprayed by the spray washing device, so that the effect of cleaning the filler 3 and the inner wall of the barrel is achieved, the cleaning process does not need to be manually participated, the deodorizing subsystem 100 is not required to be disassembled and cleaned, the cleaning efficiency and the effect are effectively improved, the shutdown cleaning is avoided, and the working efficiency of the deodorizing subsystem 100 is improved.
As shown in fig. 3, the cleaning system further includes a first liquid supply device and a first liquid storage tank 41, wherein an inlet of the first liquid supply device is communicated with the first liquid storage tank 41, and a plurality of spray cleaning devices are connected with the first liquid supply device, and the first liquid supply device is used for conveying cleaning liquid to the plurality of spray cleaning devices simultaneously. Wherein, spray rinsing device includes first liquid supply branch pipe 42 and a plurality of first shower nozzles 43, and first liquid supply branch pipe 42 sets up in the below of filtering baffle 2, and first liquid supply branch pipe 42 can be set up as the coil pipe. The first liquid supply branch pipe 42 of each spray washing device is connected with the first liquid supply device, a plurality of upward connecting holes are formed in the first liquid supply branch pipe 42, and a plurality of first spray heads 43 are respectively connected with the connecting holes in a one-to-one correspondence mode. A plurality of filtration holes are formed in the filtration baffle, the first spray nozzle 43 is located in the filtration holes of the filtration baffle 2, the opening of the first spray nozzle 43 faces upwards, the upper end of the first spray nozzle 43 does not extend out of the filtration holes of the filtration baffle, and only the first spray nozzle 43 can spray liquid onto the filler 3, so that the filler 3 is prevented from being worn by the first spray nozzle 43. The first spray head 43 adopts a high-pressure spray head, so that the cleaning liquid can be fully contacted with the filler 3, and the effect of the first spray head 43 on the back flushing of the filler 3 is improved. Each first liquid supply branch pipe 42 is provided with a valve, so that each first liquid supply branch pipe 42 can be controlled independently. Preferably, the first liquid supply means comprises a spray liquid supply pump 44 and a spray liquid supply pipe 45. The inlet of the spray liquid supply pump 44 is connected to the first liquid tank 41, the outlet of the spray liquid supply pump 44 is connected to the spray liquid supply pipe 45, and the first liquid supply branch pipe 42 is connected to the spray liquid supply pipe 45. The outlet of the spray liquid supply pump 44 is provided with a main valve, and the spray liquid supply pipe 45 is provided with a branch valve corresponding to each first liquid supply branch pipe 42.
Referring to fig. 3, the stirring device is an impeller 53, and the cleaning system further includes a stirring motor 51 and a stirring shaft 52. The stirring motor 51 is arranged at the top of the tower body 1, the rotating shaft of the stirring motor 51 is connected with the stirring shaft 52 to drive the stirring shaft 52 to rotate, the impeller 53 is fixedly sleeved on the stirring shaft 52, and the stirring motor 51 drives the impellers 53 to rotate, so that the packing 3 is driven to move, and the effect of automatically cleaning the packing 3 and the inner wall of the tower body 1 is achieved. Specifically, during cleaning, the stirring motor 51 drives the impeller 53 to rotate, so as to stir the filler 3 to a certain extent, on the one hand, during stirring, the impeller 53 can break up dust or crystals adhered to the filler 3, and meanwhile, the first nozzle 43 reversely washes the filler 3, so that dust, crystals and the like concentrated and retained on the filler 3 are washed down from the filler 3. The packing 3 can be driven to move by the rotation of the impeller 53 when dust removal and deodorization are performed, so that the contact area between gas and the packing 3 is increased, and the dust removal and deodorization effect is further improved.
The spray system is similar to the cleaning system, and with reference to fig. 3, the spray system further includes a spray liquid supply pump 54, a spray liquid supply pipe 55, and a second liquid reservoir 56. The inlet of the spray liquid supply pump 54 is connected with the second liquid storage tank 56, the outlet of the spray liquid supply pump 54 is connected with the spray liquid supply pipe 55, and a plurality of spray devices are connected with the spray liquid supply pipe 55. The spray device comprises a second liquid supply manifold 57 and a plurality of second spray heads 58. A second liquid supply branch pipe 57 is arranged above the at least one layer of packing 3, the second liquid supply branch pipe 57 can be arranged as a coil pipe, and the second liquid supply branch pipe 57 is connected with the spraying liquid supply pipe 55. The plurality of second spray heads 58 are connected to the second liquid supply branch pipe 57, and the openings of the second spray heads 58 are directed downward to spray liquid into the packing 3. The second spray head 58 adopts an atomization spray head, so that the contact area between the liquid and the gas is increased, and the dust removal and deodorization effects are improved. Each second liquid supply branch pipe 57 is provided with a valve, so that each second liquid supply branch pipe 57 can be controlled independently. The outlet of the spray liquid supply pump 54 is provided with a main valve, and the spray liquid supply pipe 55 is provided with a branch valve corresponding to each second liquid supply branch pipe 57.
The tower body 1 is a hollow cylinder which is vertically arranged, an air inlet 11 is formed in a position, close to the bottom, of the tower body 1, and a flange is arranged on the air inlet 11 and used for being connected with an exhaust gas source. The top of tower body 1 is connected with the pyrocondensation pipe, and the diameter of the first end of pyrocondensation pipe is greater than the diameter of second end, and the first end of pyrocondensation pipe is connected with the top of tower body 1, has seted up air outlet 13 on the pyrocondensation pipe for concentrate the gaseous discharge body 1 after will handling. The tower body 1 is also provided with a plurality of access holes 14, and each access hole 14 corresponds to one stirring device and is used for overhauling and replacing the stirring device and the packing 3. The bottom of the tower body 1 is also arranged at a second sewage outlet 12, and the second sewage outlet 12 is arranged below the air inlet 11 and used for emptying.
As shown in fig. 4, the filtering mechanism includes a bag filter, which is a conventional apparatus for primarily filtering wastewater, and an ultrafiltration membrane tube. The ultrafiltration membrane tube comprises a shell 202 and a filtration membrane 203, wherein the shell 202 is a hollow cylinder, the filtration membrane 203 is obliquely arranged in the shell 202, an included angle between the filtration membrane 203 and the end face of the shell 202 is larger than 0 DEG and smaller than 90 DEG, preferably, the edge of the filtration membrane 203 is in sealing connection with the inner wall of the shell 202, the first side edge of the filtration membrane 203 is in butt joint with the inner side face of the first end face 204, the second side edge of the filtration membrane 203 is in butt joint with the inner side face of the second end face 205, and the butt joint points of the two end faces are positioned on a straight line passing through the center point of the filtration membrane 203. The filter membrane 203 divides the interior of the housing 202 into a liquid inlet chamber and a liquid outlet chamber, and wastewater enters the liquid inlet chamber, is filtered by the filter membrane 203, and enters the liquid outlet chamber. The housing 202 includes a first end face 204, a second end face 205, and a sidewall 206 connecting the first end face 204 and the second end face 205. The first end face 204 is connected with a water inlet end pipeline 207, the second end face 205 is provided with a water outlet end pipeline 208, the inlet of the water inlet end pipeline 207 is connected with the bag filter, the outlet of the water inlet end pipeline 207 is connected with the liquid inlet cavity, the inlet of the water outlet end pipeline 208 is connected with the liquid outlet cavity, and the waste water filtered by the bag filter enters the liquid inlet cavity from the water inlet end pipeline 207 for secondary filtration. The side wall 206 is provided with a first flushing hole 209 and a second flushing hole 210 which are arranged oppositely along the radial direction, the inlets of the first flushing hole 209 and the second flushing hole 210 are connected with a flushing water pipeline, the outlet of the first flushing hole 209 is communicated with the liquid inlet cavity, and the outlet of the second flushing hole 210 is communicated with the liquid outlet cavity. The wash water is injected with high-pressure water into the liquid inlet cavity through the first wash hole 209 for high-pressure washing is carried out on the filtering membrane 203, in addition, the wash water is injected with high-pressure water into the liquid outlet cavity through the second wash hole 210 for high-pressure washing is carried out on the filtering membrane 203, filter residues on the filtering membrane 203 are quickly cleaned, an ultrafiltration membrane tube is not required to be disassembled, the filtering membrane 203 can be cleaned, and the cleaning difficulty is reduced. The front end of the ultrafiltration membrane tube is provided with the filter device, and the filter device is provided with the rapid residue cleaning port, so that the filter residue is easily cleaned, a large amount of labor is reduced, the normal water yield of the ultrafiltration system is ensured, and the service life of the ultrafiltration membrane tube is prolonged.
The sewage treatment subsystem 200 comprises a sewage tank 201 and a filtering mechanism, wherein the filtering mechanism is connected with the sewage tank 201 and is used for carrying out centralized treatment on the wastewater filtered by each device, and no pollution is discharged. The receiving device 301, the coarse crusher 302, the butterfly screen 304, the biomass crushing separator 305 and the extrusion dehydrator 306 are all provided with sealing covers, and the sealing covers are used for collecting harmful gases volatilized out of various devices, such as ammonia, hydrogen sulfide, amines and the like. The sealing cover is provided with an exhaust port, and the exhaust port is connected with the deodorizing subsystem 100 and is subjected to harmless treatment through the deodorizing subsystem 100. The bottom of receiving device 301, rough crusher 302, butterfly screen 304, biomass crushing separator 305 and extrusion hydroextractor 306 all is provided with the water catch bowl, and the water catch bowl is connected with the sealed cowling and forms sealed storehouse, and the water catch bowl is connected with effluent water sump 201, and equipment seals in sealed storehouse, can prevent that the foul smell from diffusing to the air, can collect and centralized processing waste water again. In the whole process of the garbage after entering the treatment system, the drained water is collected in an organized way through each water collecting tank, so that the phenomenon of 'running off and leaking' of sewage is avoided. The equipment is provided with the sealing cover, the sealing cover and the water collecting tank are in butt joint to form a sealing bin, harmful gas is prevented from being directly diffused into the air to pollute the environment, and the environment is effectively protected through harmless treatment of the odor treatment subsystem. The conveying device adopts airtight equipment, a bad smell discharge port is reserved, and the bad smell port is connected with a bad smell treatment subsystem. The whole system adopts mechanized equipment, reduces personnel configuration, and effectively reduces personnel labor intensity.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.
In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.
Claims (7)
1. The anaerobic fermentation pretreatment system for kitchen waste is characterized by comprising a pretreatment subsystem (300), a deodorizing subsystem (100) and a sewage treatment subsystem (200);
The pretreatment subsystem (300) comprises a receiving device (301), a coarse crusher (302), a magnetic separator (303), a butterfly screen (304), a biomass crushing separator (305) and an extrusion dehydrator (306) which are connected in sequence;
the sewage treatment subsystem (200) comprises a sewage tank (201) and a filtering mechanism, wherein the filtering mechanism is connected with the sewage tank (201);
the material receiving device (301), the coarse crusher (302), the butterfly screen (304), the biomass crushing separator (305) and the extrusion dehydrator (306) are all provided with sealing covers, an exhaust port is formed in the sealing covers, and the exhaust port is connected with the deodorizing subsystem (100); the device comprises a receiving device (301), a coarse crusher (302), a butterfly-shaped sieve (304), a biomass crushing separator (305) and an extrusion dehydrator (306), wherein water collecting tanks are arranged at the bottoms of the coarse crusher, the butterfly-shaped sieve, the biomass crushing separator and the extrusion dehydrator (306), are connected with a sealing cover to form a sealing bin, and are connected with a sewage tank (201);
the extrusion dehydrator (306) comprises a blanking bin (361), a receiving bin (362), a compression bin (363), a compression pushing head device (364), a first sealing cover and a first water collecting tank (365);
the inlet of the blanking bin (361) is connected with a blanking port, the outlet of the blanking bin (361) is connected with the receiving bin (362), a plurality of water leakage holes are uniformly formed in the bottom plate of the receiving bin (362), and the aperture of each water leakage hole is 15-30 mm;
The compression bin (363) is connected with the receiving bin (362), and the compression pushing head device (364) can push materials in the receiving bin (362) into the compression bin (363) for extrusion dehydration;
the first water collecting tank (365) is connected with the first sealing cover to form a first sealing bin, and the receiving bin (362) and the compression bin (363) are both arranged in the first sealing bin; a first drain outlet (366) is formed in the bottom of the first water collecting tank (365), and the first drain outlet (366) can be connected with the sewage tank (201);
the compression bin (363) comprises a cavity, a first gate mechanism (367), a second gate mechanism (368), and a drainage mechanism (369);
the first end and the second end of the cavity are both openings, and the receiving bin (362) is connected with the second end of the cavity;
the first gate mechanism (367) and the second gate mechanism (368) are both disposed at a first end of the cavity, and the second gate mechanism (368) is located between the first gate mechanism (367) and a second end of the cavity;
a plurality of first water filtering holes are formed in the bottom plate and the side plate of the cavity, the first water filtering holes are located between the second gate mechanism (368) and the second end of the cavity, the diameter of the first water filtering holes in the bottom plate of the cavity is 12-16 mm, and the diameter of the first water filtering holes in the side plate of the cavity is 10-14 mm;
A drain hole is further formed in the bottom plate of the cavity, and the drain hole is positioned between the first gate mechanism (367) and the second gate mechanism (368);
the drainage mechanism (369) is arranged on the bottom plate of the cavity, and the drainage mechanism (369) can open or close the drainage hole;
the first gate mechanism (367) comprises a sealing gate and a first driving assembly, the sealing gate is arranged at an opening of the first end of the cavity in a sliding mode, and the first driving assembly is connected with the sealing gate;
the second gate mechanism (368) comprises a stressed gate and a second driving assembly, the stressed gate is slidably arranged between the sealed gate and the second end of the cavity, and the second driving assembly is connected with the stressed gate; the stress gate is provided with a plurality of second water filtering holes, and the aperture of each second water filtering hole is 5-15 mm;
the drainage mechanism (369) comprises a drainage door and a third driving assembly, the drainage door is arranged on the lower surface of the bottom plate of the cavity in a sliding mode, the third driving assembly is connected with the drainage door, and the drainage door can be used for opening or closing the drainage hole.
2. The anaerobic fermentation pretreatment system of kitchen waste according to claim 1, wherein the extrusion dehydrator (306) further comprises a return mechanism comprising a return screw (370) and a scraper machine (371);
The first water collecting tank (365) is funnel-shaped, the first sewage outlet (366) is arranged at the bottom end of the first water collecting tank (365), and a filter screen is arranged on the first sewage outlet (366);
the inlet of the returning material screw machine (370) is connected with the first water collecting tank (365), the outlet of the returning material screw machine (370) is connected with the feeding port of the scraper machine (371), and the discharging port of the scraper machine (371) is connected with the blanking bin (361).
3. The anaerobic fermentation pretreatment system of kitchen waste according to claim 1 or 2, wherein the deodorizing subsystem (100) comprises a tower body (1), a spraying device and a cleaning device;
the bottom of the tower body (1) is provided with an air inlet (11), the top of the tower body (1) is provided with an air outlet (13), and the air outlets are all connected with the air inlet (11);
a plurality of filtering baffle plates (2) are arranged in the tower body (1) at intervals along the up-down direction, and a filler (3) is filled above each filtering baffle plate (2);
the spraying device comprises a plurality of spraying mechanisms, one spraying mechanism is arranged above at least one layer of filler (3), and the spraying mechanism can spray liquid to the filler (3);
the cleaning device comprises a plurality of spray washing mechanisms, a plurality of stirring mechanisms, a first liquid supply mechanism and a first liquid storage tank (41); the lower part of each filtering baffle plate (2) is provided with one spraying mechanism, the spraying mechanism can spray liquid onto the filler (3) above the filtering baffle plates (2), the stirring mechanism is embedded in the filler (3), and the stirring mechanism can stir the filler (3);
The inlet of the first liquid supply mechanism is communicated with the first liquid storage tank (41), and a plurality of spray washing mechanisms are connected with the first liquid supply mechanism.
4. A kitchen waste anaerobic fermentation pretreatment system according to claim 3, characterized in that the spray washing mechanism comprises a first liquid supply branch pipe (42) and a plurality of first spray heads (43);
the first liquid supply branch pipe (42) is arranged below the filtering baffle plate (2), and the first liquid supply branch pipe (42) is connected with the first liquid supply mechanism;
a plurality of first shower nozzles (43) all with first feed branch pipe (42) are connected, a plurality of filtration holes have been seted up on filtering baffle (2), first shower nozzle (43) are located in the filtration hole, the opening of first shower nozzle (43) up.
5. A kitchen waste anaerobic fermentation pretreatment system according to claim 3, wherein the spraying device further comprises a second liquid supply mechanism, the second liquid supply mechanism comprises a spraying liquid supply pump (54), a spraying liquid supply pipe (55) and a second liquid storage tank (56);
an inlet of the spraying liquid supply pump (54) is connected with the second liquid storage tank (56), and an outlet of the spraying liquid supply pump (54) is connected with the spraying liquid supply pipe (55);
the spraying mechanism comprises a second liquid supply branch pipe (57) and a plurality of second spray heads (58);
The second liquid supply branch pipe (57) is arranged above the at least one layer of filling material (3), and the second liquid supply branch pipe (57) is connected with the spraying liquid supply pipe (55);
and a plurality of second spray heads (58) are connected with the second liquid supply branch pipe (57), and the openings of the second spray heads (58) face downwards.
6. The anaerobic fermentation pretreatment system for kitchen waste according to claim 1 or 2, wherein the filtration mechanism comprises a bag filter and an ultrafiltration membrane tube;
the ultrafiltration membrane tube comprises a shell (202) and a filtration membrane (203), wherein the shell (202) is a hollow cylinder, the filtration membrane (203) is arranged in the shell (202), an included angle between the filtration membrane (203) and the end surface of the shell (202) is larger than (0) DEG and smaller than (90) DEG, and the filtration membrane (203) divides the interior of the shell (202) into a liquid inlet cavity and a liquid outlet cavity;
the housing (202) comprises a first end face (204), a second end face (205), and a side wall (206) connecting the first end face (204) and the second end face (205);
the first end face (204) is connected with a water inlet end pipeline (207), the second end face (205) is provided with a water outlet end pipeline (208), an inlet of the water inlet end pipeline (207) is connected with the bag filter, an outlet of the water inlet end pipeline (207) is connected with the liquid inlet cavity, and an inlet of the water outlet end pipeline (208) is connected with the liquid outlet cavity;
The side wall (206) is provided with a first flushing hole (209) and a second flushing hole (210) along the radial direction, the inlets of the first flushing hole (209) and the second flushing hole (210) are connected with a flushing water pipeline, the outlet of the first flushing hole (209) is communicated with the liquid inlet cavity, and the outlet of the second flushing hole (210) is communicated with the liquid outlet cavity.
7. Kitchen waste anaerobic fermentation pretreatment system according to claim 1 or 2, characterized in that the material receiving device (301), the coarse crusher (302), the magnetic separator (303), the butterfly screen (304), the biomass crushing separator (305) and the extrusion dehydrator (306) are connected in sequence through a feeding screw (307), and the feeding screw (307) is connected with the sewage tank (201) through a liquid discharge pipe.
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| CN202210581054.6A CN114918227B (en) | 2022-05-25 | 2022-05-25 | Anaerobic fermentation pretreatment system for kitchen waste |
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| CN202210581054.6A CN114918227B (en) | 2022-05-25 | 2022-05-25 | Anaerobic fermentation pretreatment system for kitchen waste |
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| CN114918227B true CN114918227B (en) | 2023-08-04 |
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| CN112496013A (en) * | 2020-12-30 | 2021-03-16 | 浙江丽庭环境科技有限公司 | Kitchen waste anaerobic composting fermentation reduction treatment method |
| CN112588795A (en) * | 2020-12-30 | 2021-04-02 | 浙江丽庭环境科技有限公司 | Kitchen waste reduction pretreatment method |
| CN113883836A (en) * | 2021-09-30 | 2022-01-04 | 重庆耐德新明和工业有限公司 | High-pressure extrusion dehydrator and use method thereof |
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2022
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| JPH0924360A (en) * | 1995-07-07 | 1997-01-28 | Miike Tekkosho Kk | Waste recycling plant |
| CN103405986A (en) * | 2013-08-22 | 2013-11-27 | 李钻水 | Flue gas dust removal device with stirring and cleaning mechanism |
| CN207401290U (en) * | 2017-09-12 | 2018-05-25 | 温州展力环保设备有限公司 | A kind of stirring spray column |
| WO2020232996A1 (en) * | 2019-05-21 | 2020-11-26 | 北京高能时代环境技术股份有限公司 | Pretreatment process and apparatus for sorting organic matter of kitchen waste |
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| CN114918227A (en) | 2022-08-19 |
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