CN216655758U - Kitchen waste and household garbage are pretreatment system in coordination - Google Patents
Kitchen waste and household garbage are pretreatment system in coordination Download PDFInfo
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- CN216655758U CN216655758U CN202220114198.6U CN202220114198U CN216655758U CN 216655758 U CN216655758 U CN 216655758U CN 202220114198 U CN202220114198 U CN 202220114198U CN 216655758 U CN216655758 U CN 216655758U
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Abstract
The utility model discloses a kitchen waste and household waste synergistic pretreatment system which comprises a receiving device, a crushing device, a first solid-liquid separation device, a second solid-liquid separation device, an oil extraction device and a dehydrated kitchen waste conveying device, wherein the crushing device is connected with the first solid-liquid separation device; through the pretreatment of the kitchen waste, the water content of the kitchen waste is reduced, so that the kitchen waste and the household waste can be mixed and cooperatively treated. The problem of traditional refuse treatment raw materials singleness is solved, simultaneously all handle various sewage, supernatant, concentrate etc. that produce in the processing system, furthest reduces environmental pollution, has improved resource utilization.
Description
Technical Field
The utility model belongs to the field of resource utilization and harmless treatment of garbage, and particularly relates to a kitchen garbage and household garbage cooperative pretreatment system.
Background
Under the guidance of national strategies and policies such as ecological civilization construction, country joyful, "30.60" carbon emission reduction, carbon peak reaching and the like, garbage disposal increasingly draws attention of people. The conventional treatment technology of the kitchen waste comprises feed conversion, composting, anaerobic fermentation and the like, and the conventional treatment technology of the household waste comprises sanitary landfill, incineration power generation, pyrolysis gasification and the like. In the above-mentioned technique that is applicable to kitchen garbage, domestic waste and handles, because the difference of rubbish kind, the processing requirement is different, and the exclusive use is usually, and mostly handles single rubbish kind.
In the face of the problems of increasingly tightened urban and rural land indexes, more defects and the like in the treatment of single garbage raw materials, how to realize the cooperative treatment of various organic garbage is a problem which is widely concerned in the field of solid waste treatment at present.
Specifically, aiming at the most common kitchen waste and household waste in daily life of residents, how to realize the cooperative treatment of the two types of waste is to improve the integration degree of a treatment system, save land resources, reduce engineering investment, reduce pollutant discharge and improve waste treatment efficiency, so that the aim of constructing a project and realizing the treatment of various types of waste is fulfilled, and the method is a key research direction in the field of kitchen waste and household waste treatment at present.
SUMMERY OF THE UTILITY MODEL
Because the moisture content of the kitchen waste and the household waste is different, the moisture content of the kitchen waste is higher than that of the household waste by about one time or even higher, and the problems of overhigh treatment energy consumption and increased treatment time are caused during treatment at the same time. The utility model aims to provide a kitchen waste and household waste synergistic pretreatment system, so that when the kitchen waste and the household waste are mixed, the water content of the kitchen waste is close to that of the household waste, and the energy consumption for treatment is reduced.
In order to achieve the purpose, the utility model provides a synergistic pretreatment system for kitchen waste and household waste, which comprises a receiving device, a crushing device, a first solid-liquid separation device, a second solid-liquid separation device, an oil extraction device and a dehydrated kitchen waste conveying device, wherein the crushing device is arranged on the receiving device;
the receiving device is used for receiving the kitchen waste and conveying the kitchen waste to the crushing device for crushing;
the solid-liquid separation device is used for carrying out solid-liquid separation on the crushed kitchen waste to obtain solid kitchen waste and liquid-phase materials;
the oil extraction device is used for extracting oil from the liquid-phase material to obtain an oil-phase material and a water-phase material; the water phase materials are sent to a sewage treatment device for harmless treatment, and the oil phase materials are stored through an oil storage device;
the kitchen waste conveying device conveys the solid kitchen waste separated by the solid-liquid separation device to a household waste and kitchen waste mixing system to be mixed with the household waste for stacking.
Preferably, the solid-liquid separation device comprises a first solid-liquid separation device and a second solid-liquid separation device;
the first solid-liquid separation device dehydrates the crushed kitchen waste to obtain slurry and solid kitchen waste;
and the second solid-liquid separation device is used for further performing solid-liquid separation on the dehydrated slurry to obtain solid kitchen waste and liquid-phase materials.
Preferably, a percolate collecting device and a percolate concentrating device are arranged at the outer side of the bottom of the household garbage and kitchen garbage mixing system; the leachate collecting device collects the domestic garbage and leachate generated at the bottom of the kitchen garbage mixing system; the leachate concentrating device is used for concentrating the collected leachate to obtain supernatant and concentrated solution; and conveying the concentrated solution to a garbage integrated treatment device for treatment, and conveying the supernatant to a sewage treatment device for harmless treatment.
Preferably, the household garbage and kitchen garbage mixing system comprises a garbage receiving pool, wherein the garbage receiving pool is connected with the garbage integrated treatment device to supply materials for the garbage integrated treatment device; a domestic garbage discharging hall is arranged at one side of the upper part of the garbage receiving pool and used for discharging domestic garbage to the garbage receiving pool; the kitchen waste conveying device conveys the pretreated solid kitchen waste to a waste receiving pool to be mixed with the household waste; the percolate collecting device is arranged at the outer side of the bottom of the garbage receiving pool and communicated with the bottom of the garbage receiving pool.
Preferably, a feeding hopper is arranged on one side of the upper part of the garbage receiving pool, the feeding end of the feeding hopper is positioned in the garbage receiving pool, and the discharging end of the feeding hopper is positioned above the garbage integrated treatment device outside the garbage receiving pool and supplies materials to the garbage integrated treatment device through the feeding hopper.
Preferably, the garbage receiving pool is a negative pressure closed workshop, and the discharge end of the kitchen garbage conveying device is positioned in the garbage receiving pool.
Preferably, the receiving device conveys the kitchen waste to the crushing device through a spiral conveying device.
Preferably, a spiral discharging device is arranged at the bottom of the receiving device and conveys the kitchen waste to a discharging port of the receiving device.
Preferably, the first solid-liquid separation device is one or a combination of a screw extrusion dehydrator, a centrifugal dehydrator or a belt filter press.
Preferably, an induced air device is arranged between the garbage receiving tank and the garbage integrated treatment device, and the induced air is used as a gasification agent or a combustion improver to be sent to the garbage integrated treatment device.
Preferably, the kitchen waste conveying device is provided with a heating device for heating solid kitchen waste
The utility model has the advantages that:
the synergistic pretreatment system for the kitchen waste and the household waste can realize synergistic energy treatment of the household waste and the kitchen waste, and solves the problem of single treatment raw material of the traditional waste treatment technology;
the pretreatment system aims at kitchen waste treatment, the water content of the kitchen waste is reduced through pretreatment, and crude oil extracted by the oil extraction device is stored and can be reused;
after the pretreatment system concentrates the landfill leachate, the concentrated solution is subjected to back-spraying treatment, so that the discharge amount of the leachate is reduced, and the discharge amount of pollutants such as ammonia nitrogen, COD (chemical oxygen demand), organic matters, heavy metals and the like in the leachate is greatly reduced;
the system has good environmental protection performance, and the garbage receiving tank adopts a closed negative pressure mode, so that odor diffusion is greatly reduced; the concentrated leachate is rich in a large amount of pollutants and is treated by a garbage integrated treatment system, so that the pollutant emission is reduced; the sewage is discharged after standard treatment; the induced draft fan introduces air with odor from the garbage receiving pool, and the part returns to the garbage receiving pool after heat exchange, so that the direct air induction from the atmosphere is avoided;
the system has good stability and strong raw material adaptability, and can simultaneously treat kitchen waste, household garbage and percolate concentrated solution.
Drawings
Fig. 1 is a schematic structural diagram of a synergistic pretreatment system for kitchen waste and household waste.
Fig. 2 is a schematic structural diagram of a receiving device.
Fig. 3 is a schematic structural diagram of the crushing device.
FIG. 4 is a schematic structural view of a first solid-liquid separation apparatus of the present invention.
FIG. 5 is a schematic structural view of a second solid-liquid separation apparatus according to the present invention.
1-receiving means, 101-hopper, 102-screw discharger, 103-discharge opening 104-screw conveyor
2-crushing apparatus, 201-crusher material inlet, 202-crusher material outlet
3-a first solid-liquid separation device, 301-a material inlet, 302-a slurry outlet and 303-a solid kitchen waste outlet
4-a second solid-liquid separation device, 401-a material inlet, 402-a liquid-phase material outlet, 403-a solid kitchen waste outlet
5-oil extraction device
6-crude oil storage tank
7-Sewage treatment plant
8-percolate concentrating device
9-leachate collecting device
10-dehydration kitchen conveying device
11-garbage receiving pool, 1101-electric rolling door, 1102-garbage discharging hall, 1103-material grabbing travelling crane, 1104-feeding hopper 12-garbage integrated treatment device
Detailed Description
According to the above technical solutions, preferred embodiments are described in detail with reference to the drawings, and specific reference is made to fig. 1 to 5.
The utility model discloses a kitchen waste and household waste synergistic pretreatment system which comprises a receiving device, a crushing device, a first solid-liquid separation device, a second solid-liquid separation device, an oil extraction device and a dehydrated kitchen waste conveying device, wherein the crushing device is used for crushing kitchen waste;
the receiving device is used for receiving the kitchen waste and conveying the kitchen waste to the crushing device for crushing;
the solid-liquid separation device is used for carrying out solid-liquid separation on the crushed kitchen waste to obtain solid kitchen waste and liquid-phase materials;
the oil extraction device is used for extracting oil from the liquid-phase material to obtain an oil-phase material and a water-phase material; the water phase materials are sent to a sewage treatment device for harmless treatment, and the oil phase materials are stored through an oil storage device;
and the kitchen waste conveying device conveys the solid kitchen waste separated by the solid-liquid separation device to a household waste and kitchen waste mixing system to be mixed with the household waste for stacking.
The pretreatment system will be described in detail below, and the treatment apparatus can be commercially available.
The receiving device 1 comprises a hopper, a spiral discharger 102 is arranged at the bottom of the hopper 101, and a discharge port 103 is arranged at the discharge end of the spiral discharge port. The kitchen waste is conveyed to the hopper 101 through the waste conveying vehicle, then the kitchen waste is conveyed to the crushing device 2 through the spiral discharging device through the discharging hole 103, and then the crushing device is conveyed to the crushing device 2 through the spiral conveying device 104.
The crushing device 2 comprises a box body, wherein a crusher, a crusher material inlet 201 and a crusher material outlet 202 are arranged in the box body. The crusher may employ one or a combination of a hammer crusher, an impact crusher, a shear crusher, or a roller crusher. After being received by the receiving device, the kitchen waste enters the crusher through the crusher material inlet 201 to be crushed, and the crushed material is sent to the first solid-liquid separation device 3 through the crusher material outlet 202 to be dehydrated.
The first solid-liquid separation device 3 comprises a dehydrator, a material inlet 301, a slurry outlet 302 and a solid kitchen waste outlet 303. The dehydrator is one or a combination of a screw extrusion dehydrator, a centrifugal dehydrator or a belt filter press. After being crushed by the crushing device, the kitchen waste is sent to a dehydrator for dehydration through a crusher material outlet 202 and a first solid-liquid separation device material inlet 301, and the solid content of the dehydrated solid kitchen waste is 30-40%. The dehydrated solid kitchen waste is delivered to the dehydrated kitchen waste conveying device 10 through the solid kitchen waste outlet 303, and is delivered to the kitchen waste and household waste mixing system through the dehydrated kitchen waste conveying device 10 to be mixed with the household waste. Slurry generated after the kitchen waste is dehydrated by the first solid-liquid separation device is sent to the second solid-liquid separation device 4 through the slurry outlet 302 for further solid-liquid separation.
The second solid-liquid separation device 4 is provided with a material inlet 401, a liquid-phase material outlet 402 and a solid kitchen waste outlet 403. The second solid-liquid separation device can also adopt one or the combination of a screw extrusion dehydrator, a centrifugal dehydrator or a belt filter press; the second solid-liquid separation device has a larger mesh size than the first solid-liquid separation device 3 because the solid particles in the slurry are small. The dehydrated slurry enters a second solid-liquid separation device 4 through a material inlet 401 for further solid-liquid separation, and then the solid kitchen waste is conveyed to a dehydrated kitchen waste conveying device 10 through a solid kitchen waste outlet 403 and conveyed to a kitchen waste and household waste mixing system through the dehydrated kitchen waste conveying device 10 to be mixed with the household waste. The liquid-phase material is sent to the oil extraction device 5 through the liquid-phase material outlet 402 for oil-water separation.
And an oil extraction device 5 for performing oil extraction treatment on the liquid-phase material subjected to solid-liquid separation by the second solid-liquid separation device 4 to separate oil from water. And (3) sending the oil-phase material on the upper layer, namely the crude oil, after oil-water separation to a crude oil storage tank 6 for storage, and recycling as resources. And (4) conveying the lower-layer water phase into a sewage treatment device 7 for harmless treatment, and discharging after reaching the standard.
The kitchen waste conveying device 10 comprises a belt conveyor and a conveying device shell arranged outside the belt conveyor; the shell of the conveying device is provided with a solid kitchen waste inlet of the first solid-liquid separation device and a solid kitchen waste inlet of the second solid-liquid separation device 4, and the solid kitchen waste after solid-liquid separation and the solid kitchen waste after liquid-phase separation are respectively conveyed to the belt conveyor. The discharge end of the kitchen waste conveying device 10 is located in the kitchen waste and household waste mixing system. Still can set up heating device on kitchen garbage conveyor 10, heat the solid kitchen garbage on the conveyor, reduce the moisture content. The heating device may be implemented by: after the garbage integrated treatment system treats garbage, the generated low-quality heat energy, such as high-temperature flue gas, exchanges heat with air led out from the garbage receiving pool, and the generated hot air is returned to the kitchen garbage conveying device to heat solid kitchen garbage. When heating through this kind of mode, kitchen garbage conveyor's air outlet is located the discharge end, is located the rubbish receiving tank promptly, avoids the smell polluted environment in the hot-air.
In the kitchen waste pretreatment system, in order to reduce the occupied area of a space plane, all devices are reasonably arranged in a layered mode as much as possible, and the space volume utilization rate is fully improved; meanwhile, the conveying speed is accelerated by utilizing the action of gravity.
Domestic waste and kitchen garbage hybrid system is including rubbish receiving pool 11, is provided with rubbish hall 1102 of unloading on 11 upper portion one sides in rubbish receiving pool, and rubbish hall of unloading is with rubbish receiving pool intercommunication. The garbage discharging hall is provided with an electric rolling shutter door 1101, and the household garbage transport vehicle enters the garbage discharging hall 1102 through the electric rolling shutter door 1101 and dumps the household garbage into the garbage receiving pool 11. The top in rubbish receiving pool 11 is provided with grabs the material driving 1103, is provided with feeder hopper 1104 at rubbish receiving pool opposite side, and feeder hopper 1104 feed end is located rubbish receiving pool 11, and the discharge end is located the outside rubbish integrated processing device 12's in rubbish receiving pool top, grabs the material driving 1103 and snatchs domestic waste and kitchen garbage's mixture, handles in sending rubbish integrated processing device 12 through feeder hopper 1104, generates electricity or produces heat energy. Heating air openings are distributed at the bottom and the side wall of the feed hopper 1104, and heating air openings for supplying heat air enter the feed hopper 1104 to heat garbage in the feed hopper; and simultaneously the air after heating the garbage enters the garbage receiving tank 11.
The garbage receiving pool 11 is a negative pressure closed type workshop, the electric rolling door 1101 is only opened when the domestic garbage transport vehicle unloads, and the electric rolling door 1101 is closed at the rest time, so that the dirty air is prevented from leaking and the environment is prevented from being polluted.
The discharge end of the kitchen waste conveying device 10 extends into the waste receiving pool 11 from one side. The solid kitchen waste subjected to solid-liquid separation is conveyed into a waste receiving pool 11 through a discharge end by a kitchen waste conveying device 10 and is stacked and mixed with the household waste at the bottom of the waste receiving pool. The mixed garbage is sent into a garbage integrated treatment device 12 for treatment after being stacked for 5 to 7 days in a garbage receiving pool.
The discharge end of the kitchen waste conveying device 10 and a waste discharging hall need to be kept a sufficient distance from the bottom of the waste receiving pool 11, kitchen waste and household waste fall into the waste receiving pool through gravity, the space volume is fully utilized, and other external forces are not needed for operation such as rolling and stacking.
The bottom outside that is close to kitchen garbage pretreatment system one side at rubbish receiving pool 11 is provided with filtration liquid collection device 9, and filtration liquid collection device 9 is the storage pool structure, with 11 bottom intercommunications in rubbish receiving pool for collect filtration liquid in rubbish receiving pool 11.
Leachate concentrating device 8 communicates with leachate collecting device 9, and the leachate collected by leachate collecting device 9 is concentrated to obtain supernatant and concentrate, and the solid content of the concentrate is 10-20%, and the concentrate is sent to garbage integrated treatment device 12 for treatment.
A sewage treatment device 7. And (3) conveying the supernatant generated after concentration to a sewage treatment device 7 for harmless treatment, and conveying the water-phase material subjected to oil extraction treatment by an oil extraction device to the sewage treatment device 7 for harmless treatment. The sewage treatment device 7 carries out innocent treatment on the water phase material after the oil extraction treatment and the supernatant fluid of the percolate concentration device 8 and then discharges the water phase material and the supernatant fluid after reaching the standard.
The integrated garbage treatment device 12 is a garbage incineration power generation treatment device or a garbage pyrolysis gasification treatment device. An air inducing device (not shown) is arranged between the garbage integrated treatment device and the garbage receiving pool, air is induced from the garbage receiving pool 11, the induced air is sent to the garbage integrated treatment device (12) as a gasification agent or a combustion improver, and the air inducing device simultaneously ensures that the interior of the garbage receiving pool 11 is slightly negative pressure, so that odor in the garbage receiving pool 11 can be prevented from diffusing. The integrated garbage treatment device 12 can be used for cooperatively treating dehydrated kitchen garbage, household garbage and percolate concentrated solution, heat energy generated after thermochemical treatment is used for power generation or heat supply or cogeneration, and generated slag and smoke are subjected to harmless treatment to realize overall harmless treatment and resource utilization of garbage.
Claims (11)
1. A kitchen waste and household waste synergistic pretreatment system is characterized by comprising a receiving device, a crushing device, a first solid-liquid separation device, a second solid-liquid separation device, an oil extraction device and a kitchen waste conveying device;
the receiving device is used for receiving the kitchen waste and conveying the kitchen waste to the crushing device for crushing;
the solid-liquid separation device is used for carrying out solid-liquid separation on the crushed kitchen waste to obtain solid kitchen waste and liquid-phase materials;
the oil extraction device is used for extracting oil from the liquid-phase material to obtain an oil-phase material and a water-phase material; the water phase materials are sent to a sewage treatment device for harmless treatment, and the oil phase materials are stored by an oil storage device;
the kitchen waste conveying device conveys the solid kitchen waste separated by the solid-liquid separation device to a household waste and kitchen waste mixing system to be mixed with the household waste for stacking.
2. The kitchen waste and household waste synergistic pretreatment system according to claim 1, characterized in that the solid-liquid separation device comprises a first solid-liquid separation device and a second solid-liquid separation device;
the first solid-liquid separation device dehydrates the crushed kitchen waste to obtain slurry and solid kitchen waste;
and the second solid-liquid separation device is used for further performing solid-liquid separation on the dehydrated slurry to obtain solid kitchen waste and liquid-phase materials.
3. The synergistic pretreatment system of kitchen waste and household waste according to claim 1, characterized in that a leachate collecting device and a leachate concentrating device are arranged outside the bottom of the household waste and kitchen waste mixing system; the leachate collecting device collects the domestic garbage and leachate generated at the bottom of the kitchen garbage mixing system; the leachate concentrating device is used for concentrating the collected leachate to obtain supernatant and concentrated solution; and (4) conveying the concentrated solution to a garbage integrated treatment device for treatment, and conveying the supernatant to a sewage treatment device for harmless treatment.
4. The synergistic pretreatment system of kitchen waste and household waste according to claim 3, characterized in that the household waste and kitchen waste mixing system comprises a waste receiving tank, wherein the waste receiving tank is connected with a waste integrated treatment device to supply the waste; a domestic garbage discharging hall is arranged at one side of the upper part of the garbage receiving pool and used for discharging domestic garbage to the garbage receiving pool; the kitchen waste conveying device conveys the pretreated solid kitchen waste to a waste receiving pool to be mixed with household waste; the percolate collecting device is arranged at the outer side of the bottom of the garbage receiving tank and communicated with the bottom of the garbage receiving tank.
5. The pretreatment system for kitchen waste and household waste in coordination according to claim 4, characterized in that a feed hopper is arranged on one side of the upper portion of the waste receiving tank, the feed end of the feed hopper is positioned in the waste receiving tank, and the discharge end of the feed hopper is positioned above the waste integrated treatment device outside the waste receiving tank, and the feed hopper is used for feeding the waste integrated treatment device.
6. The pretreatment system for kitchen waste and household waste cooperation according to claim 4, wherein the waste receiving pool is a negative pressure closed type factory building, and the discharge end of the kitchen waste conveying device is positioned in the waste receiving pool.
7. The pretreatment system for kitchen waste and household waste cooperation according to claim 1, wherein the receiving device conveys the kitchen waste to the crushing device through a spiral conveying device.
8. The pretreatment system for kitchen waste and household waste in coordination according to claim 6, characterized in that a spiral discharging device is arranged at the bottom of the receiving device, and the spiral discharging device conveys the kitchen waste to the discharge port of the receiving device.
9. The synergistic pretreatment system for kitchen waste and household waste according to claim 6, characterized in that the first solid-liquid separation device is one or a combination of a screw extrusion dehydrator, a centrifugal dehydrator or a belt filter press.
10. The kitchen waste and household waste synergistic pretreatment system according to claim 4, characterized in that an induced air device is arranged between the waste receiving tank and the waste integrated treatment device, and the induced air is sent to the waste integrated treatment device as a gasification agent or a combustion improver.
11. The synergistic pretreatment system of kitchen waste and household waste according to claim 1, characterized in that the kitchen waste conveying device is provided with a heating device for heating solid kitchen waste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220114198.6U CN216655758U (en) | 2022-01-17 | 2022-01-17 | Kitchen waste and household garbage are pretreatment system in coordination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220114198.6U CN216655758U (en) | 2022-01-17 | 2022-01-17 | Kitchen waste and household garbage are pretreatment system in coordination |
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| Publication Number | Publication Date |
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| CN216655758U true CN216655758U (en) | 2022-06-03 |
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| CN202220114198.6U Active CN216655758U (en) | 2022-01-17 | 2022-01-17 | Kitchen waste and household garbage are pretreatment system in coordination |
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| CN (1) | CN216655758U (en) |
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- 2022-01-17 CN CN202220114198.6U patent/CN216655758U/en active Active
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