CN109332366A - A kind of kitchen garbage processing system and method - Google Patents
A kind of kitchen garbage processing system and method Download PDFInfo
- Publication number
- CN109332366A CN109332366A CN201811459805.7A CN201811459805A CN109332366A CN 109332366 A CN109332366 A CN 109332366A CN 201811459805 A CN201811459805 A CN 201811459805A CN 109332366 A CN109332366 A CN 109332366A
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- screw
- machine
- feed bin
- rubbish
- tank
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Classifications
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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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
Abstract
The invention discloses a kind of kitchen garbage processing systems, including mobile storage tank, mobile storage tank lower part is equipped with blow tank, the material feeding trench bottom is successively arranged feed bin double helix machine, feed bin single-screw machine, the feed bin single-screw machine outlet connection material sorter, Material Sorting machine are separately connected screw conveyor and broken pulper；Screw conveyor outlet connection screw extruder；The broken pulper is sequentially connected slurry homogeneous slot, storing souring tank, whirling sand-removing system, accurate adjustment pond, anaerobic digestor.This technology invention system is by rubbish from cooking sludge merging treatment, it is insufficient that sludge organic matter can be made up, the ratio of carbon and nitrogen can be utilized by adjusting microorganism, promote anaerobic fermentation efficiency and factor of created gase, gas benefit is produced to be promoted, anaerobic digestion cost is reduced, the economic benefit of anaerobic digestion is improved, becomes a kind of important effective means of high efficient energy sources recycling.
Description
Technical field
The present invention relates to a kind of kitchen garbage processing system and methods.
Background technique
Rubbish from cooking includes the diet residue in restaurant, restaurant etc., also include in family daily life the fruits and vegetables that abandon and
The biodegradable organic wastes such as garbage material, leftovers leftovers have the characteristics that content of organics is abundant, moisture content is high, perishable.
According to statistics, the annual yield of Chinese city is not less than 6 × 107The rubbish from cooking of t, contained protein is equivalent to annual 1.6 ×
106hm2The protein output (being calculated by dry matter content) of soybean.Therefore, rubbish from cooking has the dual spy of waste and resource
Property, seek recycling treatment process be develop a circular economy, realize human and environment sustainable development basic guarantee and strategy think
Road.However, carrying out pretreatment to rubbish from cooking is one critically important in order to meet the production requirement of following resource treatment process
Processing step, directly influence the effect that following resource utilizes.Effect of Pretreatment mainly will be needed for subsequent core processing
The effective component wanted is separated.At present common preconditioning technique mainly have roller screening, manually with unartificial sorting, broken
Deng.
Summary of the invention
It realizes that 200 tons of rubbishes from cooking merge Anaerobic Digestion system with 500 tons of sludge, is first rubbish from cooking of Daliang City
Resource utilization Demonstration Base becomes national rubbish from cooking harmless treatment experimental city application example model.
The present invention provides a kind of kitchen garbage processing system: the mobile storage tank including having elevator, mobile storage tank lower part
Equipped with blow tank, the material feeding trench bottom is successively arranged feed bin double helix machine, feed bin single-screw machine, and the feed bin single-screw machine goes out
Mouth connection material sorter, Material Sorting machine separate impurity, food waste solid, are separately connected screw conveyor and broken pulper；
The Material Sorting machine usually by driving device (including decelerating motor, crank link mechanism), rack, blow tank,
Sort the composition such as rake teeth, grille strip, dirt-excluding bucket.Rubbish from cooking is entered in garbage sorting machine blow tank by Shaftless screw conveyor
By sorting the swing of rake teeth out material is spread to and releases and pass through to slag notch grille strip separation afterwards, organic matter is made to fall on bottom
Discharge bucket, then fall into crusher entrance, carry out the processing of next step；And grid slag constantly pushing and inclining by rake teeth
Angle and gravity fall into lower section deslagging screw conveyor, to carry out the processing of next step.The impurity isolated include chopsticks,
Bone class, shell, metal, glass, ceramic-like (bowl, spoon), stationery, fabric etc..The pipeline of liquid is separated in the screw extruder
Connect slurry homogeneous slot；Remaining impurity is delivered to collected outside bucket.
The broken pulper is sequentially connected slurry homogeneous slot, storing souring tank, whirling sand-removing system, accurate adjustment pond, anaerobism
Digester.
Further, in the above-mentioned technical solutions, screw conveyor outlet connection screw extruder；Obtained impurity conveying
To external barrel.
Further, in the above-mentioned technical solutions, feed bin single-screw machine, screw conveyor, spiral is collected by pipeline to squeeze
Sewage is to sewage collecting tank in press.
The present invention provides the method for above system processing rubbish from cooking, and rubbish from cooking and sludge mixed proportion are small in accurate adjustment pond
In 50%, and do not occur lamination, tracking and measuring system pH stable maintain 6.0~8.0 in the range of, mixed material
It is delivered in anaerobic digestor body by screw pump, reaction temperature is 35 ± 2 DEG C, and the residence time is 18~24 days, mixed material
Moisture content 85%~92%, mixed material organic matter degradation rate can reach 60% or more (sludge is 40% or more), at this time system
Organic loading highest can achieve 3.0~4.0kg/m3/ day.
The process that this technology handles rubbish from cooking is as follows: rubbish from cooking enters rubbish storage tank after discharging, opens blade type lock
Material in rubbish storage tank is transported to Clothoid type fly cutter crusher by material lifting conveyer and is crushed by valve, after being crushed
Kitchen garbage by dedicated expression separation equipment carry out squeeze pulp subdivision, synchronously complete organic matter and impurity separation and
The pulp of organic matter, treated, and slurries enter slurries storage tank, slaking apparatus are combined into sludge, after impurity then squeezes desiccation
(moisture content < 70%) enters material residue tank car, is discharged into landfill factory or installation for rubbish processing to be harmless as rejected material.It can be real
The resource utilization of existing rubbish from cooking and sludge, separation degree is thinner, and device facility occupied area is small and compact, separates rear slurry
Solid content is high, > 15%, requires matching high with subsequent anaerobic digestion technique, the degree of automation is advanced, and process flow is simply easy
Manipulation.
Specific process flow is as follows:
Technological invention research and development collaboration material optimize process system, rubbish from cooking production potential be 80~110 cubic metres/
Ton, rubbish from cooking organic matter degradation rate are 40%~70%, and slag yield is 10~30%, methane content of bilogas > 50%, life
Substance combustible gas methane content >=80%.
This technology invention utilizes the river Xia Jia sludge treatment plant existing utility, increases by 200 tons of rubbish from cooking processing, rubbish from cooking
Sludge merging treatment, can make up sludge organic matter deficiency, and adjustment microorganism can utilize the ratio of carbon and nitrogen, solve food waste
The independent anaerobic digestion techniques risk problem of rubbish promotes anaerobic fermentation efficiency and factor of created gase, produces gas benefit to be promoted, reduction is detested
Oxygen digests cost, improves the economic benefit of anaerobic digestion, becomes a kind of important effective means of high efficient energy sources recycling, enhances food waste
Anaerobic digestion of refuse produces biogas technology commercial viability, from bioenergy is wherein obtained, has great research significance.
Invention beneficial effect
Project utilizes the existing treatment facility of Dalian Xia Jiahe sludge treatment plant, 200 tons of food waste rubbish of merging treatment main city zone
Rubbish can reach following technical risk prevention effect and technological innovation advantage:
Rubbish from cooking basicity and the insufficient influence of nutrition can effectively be overcome
Simple rubbish from cooking can only substantially proceed to acidification when carrying out anaerobic digestion due to lacking enough basicity
Stage and cause digestion reaction to stop, in actual moving process, need constantly according to response situation feeding lime etc. at that time with
Digestion reaction consumed basicity in the process is supplemented, system otherwise will be will lead to and be unable to operate normally and technology trouble occurs.Together
When, since anaerobic digestion is complete biodegradation process, the nutriment for being also required to reaction medium itself is balanced, otherwise
Also it easily causes microbial nutrition bad and influences extent of metabolism and decomposition efficiency, to induce process operation potential faults.
The zoogloea of municipal sludge inherently microorganism, idiotrophic is harmonious very well, while being also capable of providing sufficient basicity dimension
Hold the progress of digestion reaction.
The influence of grease (animals and plants) can effectively be overcome
Grease is the intracorporal high ergastic substances of biology, and compare starch, protein of biochemical property will be stablized,
In traditional anaerobic digestion device, since medium solid content is low, grease is caused to be layered and can not be mixed with reaction medium
It is even, so then it cannot be guaranteed that its biological respinse is gone on smoothly；Meanwhile being influenced by traditional digestion reaction unit efficiency, if
Grease excessively can then generate high organic loading impact to digestion reaction, at the same it is unstable by reaction operating condition and treatment effeciency is low etc. because
The influence of element, substance of this kind are difficult clean by thorough degradation, and it is bad and induce process operation failure to easily lead to process effect
Hidden danger.Merge anaerobic digestion with sludge, concentration of medium is high, and lamination does not occur after the blending of one side grease ensure that material
Mixing uniformity；The reaction medium of another aspect high concentration makes the microbial flora density for participating in digesting bigger, strengthens significantly
Its reaction efficiency and the extent of reaction, can bear a greater degree of Organic loading shock, to avoid grease institute load impact
The technology trouble hidden danger caused.
Can active balance salt influence
Excessively high salt, which can react anaerobic digestion, in rubbish from cooking generates inhibiting effect, is influenced by dietary characteristic, I
The rubbish from cooking salt variation range of state is larger, easily has an adverse effect to the operation of anaerobic digestion reaction unit.And use with
Municipal sludge merging treatment mode can effectively overcome and balance the influence that salt changes in simple rubbish from cooking, to guarantee
The stable operation of anaerobic digestion.Project merges sludge using rubbish from cooking and implements anaerobic digestion harmless treatment and resource utilization
It is all kinds of present in Anaerobic Digestion can effectively to overcome the problems, such as that independent rubbish from cooking carries out, and technology is feasible.In addition,
Using existing utility merging treatment, government no longer needs to additional investment and builds a set of new system, using prior art basis, improves
It reduces investment outlay while environment.
In addition, effective sorting of impurity, rubbish from cooking material may be implemented in the system, feed bin double helix machine has crushing work
Can, it can be crushed Bulk plastic packaging bag, for there is the material of packaging bag that can be directly entered the system without dismantling and handle,
For feed bin single-screw machine for conveying material to Material Sorting machine, effective sorting of food waste material is may be implemented in Material Sorting machine, thorough
Impurity is removed at bottom, is filtered out effective rubbish from cooking material to the greatest extent and is facilitated access at subsequent anaerobic digestion system
Reason, the removal of impurity can effectively extend pipeline and pump housing service life, can improve processing effect with lifting system processing capacity
Rate indirectly increases production capacity, improves economic well-being of workers and staff；Broken pulper can be by specific gravity material screening, while broken material, can
To blow out the light impurities of plastics etc, the validity of batch ingredients is taken care of yourself；Impurity after sorter screens passes through spiral
Conveyer is to screw extruder, and liquid after extruding enters slurry homogeneous slot and mixes with rubbish from cooking effective ingredient, remaining siccative
Impurity outlet, this process can realize that rubbish from cooking supplied materials is screened and utilized to the greatest extent, as far as possible by all active princlples
Separation and collection, including the liquid in material itself and impurity；Storing souring tank, it is possible to reduce instantaneous mass carrys out rushing for doses
It hits, the acidification rate of rubbish from cooking can be accelerated, reduce because the hydrolysis acidification of rubbish from cooking is too fast to subsequent anaerobic digestion system
Impact, shorten residence time of material, improve reaction efficiency；The subsequent connection whirling sand-removing system of storing souring tank, effectively to remove
The sand grains impurity in food waste material is removed, has shellfish due to common in the diet of Dalian Area, gravel content is big in rubbish from cooking, acid
Change the material in tank by hydrolysis, acidification, material pH value declines, and material fluidity increases, subsequent increase Swirling flow sand-removing, Ke Yiyou
Effect realizes the separation of sand material, improves materials quality, protects equipment and pump line system.The pretreatment system of a whole set of rubbish from cooking can basis
Material status and inventory carry out processing speed adjustment, thus it is possible to vary running frequency realizes flexible and efficient processing.
Detailed description of the invention
Fig. 1 is present system structural schematic diagram；
In figure, 1 elevator, 2 mobile storage tanks, 3 blow tanks, 41, feed bin double helix machine, 42 feed bin single-screw machines, 5 materials point
Pick machine, 6 broken pulpers, 7 screw conveyors, 8 screw extruders, 9 sewage collecting tanks, 10 storing souring tanks, 11 slurry homogeneous
Slot, 12 whirling sand-removing systems, 13 anaerobic digestors, 14 accurate adjustment ponds.
Specific embodiment
Following nonlimiting examples can with a person of ordinary skill in the art will more fully understand the present invention, but not with
Any mode limits the present invention.
Embodiment 1
A kind of kitchen garbage processing system: the mobile storage tank 2 including having elevator 1, mobile 2 lower part of storage tank are equipped with material feeding
Slot 3,3 bottom of blow tank are successively arranged feed bin double helix machine 41, feed bin single-screw machine 42, and the feed bin single-screw machine 42 goes out
Mouth connection material sorter 5, Material Sorting machine 5 separate impurity, food waste solid, are separately connected screw conveyor 7 and broken slurrying
Machine 6；The broken pulper 6 be sequentially connected slurry homogeneous slot 11, storing souring tank 10, whirling sand-removing system 12, accurate adjustment pond 14,
Anaerobic digestor 13；The outlet of screw conveyor 7 connection screw extruder 8；The piping connection slurry of liquid is separated in screw extruder 8
Expect homogeneous slot 11；Obtained impurity is delivered to external barrel.Single-screw machine 4, screw conveyor 7, screw extrusion are collected by pipeline
Sewage is to sewage collecting tank 9 in machine 8.
Using the method for system processing rubbish from cooking, in accurate adjustment pond rubbish from cooking and sludge mixed proportion less than 50%,
And do not occur lamination, tracking and measuring system pH stable maintain 7.5 in the range of, mixed material by screw pump it is defeated
It send to anaerobic digestor body, reaction temperature is 35 ± 2 DEG C, and the residence time is 20 days, mixed material moisture content 88%, mixture
Material organic matter degradation rate can reach 50% or more (sludge is 40% or more), and system organic loading highest can achieve at this time
3.2kg/m3/ day obtains biogas, biogas slurry, biogas residue.
Biogas residue after deep dehydration can be used as the raw material of production haydite and cement, at the same time as the base of vegetables and fruit tree
Fertilizer is applied in agricultural production.The biogas residue that moisture content is minimized reduces transportation cost during transportation, while making
Other finished products can increase certain economic benefit.
Claims (4)
1. a kind of kitchen garbage processing system, it is characterised in that: including mobile storage tank, mobile storage tank lower part is equipped with blow tank, institute
It states material feeding trench bottom and is successively arranged feed bin double helix machine, feed bin single-screw machine, the feed bin single-screw machine outlet connection material point
Machine is picked, Material Sorting machine is separately connected screw conveyor and broken pulper；Screw conveyor outlet connection screw extruder；Institute
State the piping connection slurry homogeneous slot that liquid is separated in screw extruder；
The broken pulper is sequentially connected slurry homogeneous slot, storing souring tank, whirling sand-removing system, accurate adjustment pond, anaerobic digestion
Tank.
2. kitchen garbage processing system according to claim 1, it is characterised in that: the mobile storage tank connects elevator.
3. kitchen garbage processing system according to claim 1, it is characterised in that: by pipeline collect feed bin single-screw machine,
Sewage is to sewage collecting tank in screw conveyor, screw extruder.
4. using the method for the processing rubbish from cooking of system described in claims 1 to 3, it is characterised in that: food waste in the accurate adjustment pond
Rubbish and sludge mixed proportion less than 50%, tracking and measuring system pH stable maintain 6.0~8.0 in the range of, mixing
Material is delivered in anaerobic digestor body by screw pump, and reaction temperature is 35 ± 2 DEG C, and the residence time is 18~24 days, mixing
Material water ratio 85%~92%, mixed material organic matter degradation rate can reach 50% or more, at this time system organic loading highest
It can achieve 3.0~4.0kg/m3/ day.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811459805.7A CN109332366A (en) | 2018-11-30 | 2018-11-30 | A kind of kitchen garbage processing system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811459805.7A CN109332366A (en) | 2018-11-30 | 2018-11-30 | A kind of kitchen garbage processing system and method |
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| CN109332366A true CN109332366A (en) | 2019-02-15 |
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| CN201811459805.7A Pending CN109332366A (en) | 2018-11-30 | 2018-11-30 | A kind of kitchen garbage processing system and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877141A (en) * | 2019-03-20 | 2019-06-14 | 西藏锦瑞环境科技有限责任公司 | A kind of restaurant garbage treating system |
| CN112251331A (en) * | 2020-10-19 | 2021-01-22 | 中国天楹股份有限公司 | Dry anaerobic fermentation system for dry and wet sorting pretreatment of kitchen waste and treatment method thereof |
| CN112723700A (en) * | 2020-12-26 | 2021-04-30 | 杭州国泰环保科技股份有限公司 | Complete device for continuously separating and discharging sludge |
| CN113020216A (en) * | 2021-03-11 | 2021-06-25 | 江苏欧尔润生物科技有限公司 | Method for recycling kitchen garbage and performing centralized treatment mode |
| BE1027822B1 (en) * | 2019-12-04 | 2021-07-06 | Biogas Solutions Nv | Cyclone |
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| CN102286541A (en) * | 2011-07-14 | 2011-12-21 | 中城泓天(北京)环境科技发展有限公司 | Method for preparing biogas through food waste, urban sludge and urban excrement |
| CN203030621U (en) * | 2013-01-14 | 2013-07-03 | 桑德环境资源股份有限公司 | Sorting and slurrying pre-processing system for kitchen waste |
| CN105925361A (en) * | 2016-04-13 | 2016-09-07 | 江苏维尔利环保科技股份有限公司 | Pretreatment method of anaerobic digestion treatment of kitchen garbage |
| CN209222860U (en) * | 2018-11-30 | 2019-08-09 | 大连东泰有机废物处理有限公司 | A kind of kitchen garbage processing system |
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2018
- 2018-11-30 CN CN201811459805.7A patent/CN109332366A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102286541A (en) * | 2011-07-14 | 2011-12-21 | 中城泓天(北京)环境科技发展有限公司 | Method for preparing biogas through food waste, urban sludge and urban excrement |
| CN203030621U (en) * | 2013-01-14 | 2013-07-03 | 桑德环境资源股份有限公司 | Sorting and slurrying pre-processing system for kitchen waste |
| CN105925361A (en) * | 2016-04-13 | 2016-09-07 | 江苏维尔利环保科技股份有限公司 | Pretreatment method of anaerobic digestion treatment of kitchen garbage |
| CN209222860U (en) * | 2018-11-30 | 2019-08-09 | 大连东泰有机废物处理有限公司 | A kind of kitchen garbage processing system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877141A (en) * | 2019-03-20 | 2019-06-14 | 西藏锦瑞环境科技有限责任公司 | A kind of restaurant garbage treating system |
| BE1027822B1 (en) * | 2019-12-04 | 2021-07-06 | Biogas Solutions Nv | Cyclone |
| CN112251331A (en) * | 2020-10-19 | 2021-01-22 | 中国天楹股份有限公司 | Dry anaerobic fermentation system for dry and wet sorting pretreatment of kitchen waste and treatment method thereof |
| CN112723700A (en) * | 2020-12-26 | 2021-04-30 | 杭州国泰环保科技股份有限公司 | Complete device for continuously separating and discharging sludge |
| CN113020216A (en) * | 2021-03-11 | 2021-06-25 | 江苏欧尔润生物科技有限公司 | Method for recycling kitchen garbage and performing centralized treatment mode |
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