CN103272828B - A kind of preprocess method of changing food waste - Google Patents

A kind of preprocess method of changing food waste Download PDF

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Publication number
CN103272828B
CN103272828B CN201310204050.7A CN201310204050A CN103272828B CN 103272828 B CN103272828 B CN 103272828B CN 201310204050 A CN201310204050 A CN 201310204050A CN 103272828 B CN103272828 B CN 103272828B
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China
Prior art keywords
changing food
food waste
preprocess
phase
pulpous state
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Expired - Fee Related
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CN201310204050.7A
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Chinese (zh)
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CN103272828A (en
Inventor
徐文龙
王丽莉
郭旭
赵雄生
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China Urban Construction Design & Reserrch Institute Co., Ltd.
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City High Tech (beijing) Environmental Technology Co Ltd
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Abstract

The invention discloses a kind of preprocess method of changing food waste, comprise the steps: that the changing food waste received on fortune vehicle is directly discharged into wet solution in tank by hopper by (1), adopt damp and hot method for hydrolysis by the virus in changing food waste, the abundant deactivation of germ; (2) material after damp and hot hydrolysis enters integrated sorter, be separated pulpous state liquid phase material and the larger solid waste of particle diameter, the solid waste that the described particle diameter sub-elected is larger is sent to incineration plant or landfill yard carries out innoxious burning or landfill, and described pulpous state liquid phase material enters three phase separation all-in-one; (3) described three phase separation all-in-one is separated oil, water and the slag three-phase in described pulpous state liquid phase material, stores respectively.Preprocess method technological process of the present invention is short, equipment is few, reliability is high, reduces taking and polluting environmental resource simultaneously, obtains economy, society, environment comprehensive benefit.

Description

A kind of preprocess method of changing food waste
Technical field
The technique that the present invention relates to the harmless treatment of changing food waste and recycling is integrated, particularly relates to a kind of preprocess method of changing food waste.
Background technology
Changing food waste refers to swill, waste grease, expired food etc. that the units such as hotel, hotel, enterprises and institutions dining room, school lunch service produce in food processing, catering service, dining process.Pathogen containing a large amount of infectious diseases common to human beings and animals in changing food waste, not only easily causes animal cross-infection virus, also easily causes the disease that the viruses such as human infection aftosa, hepatitis are brought.In addition, if changing food waste is subject to the pollution of the heavy metals such as aluminium, mercury, cadmium and organic compound, benzene-like compounds, as feed for after livestock edible, the harmful substances such as heavy metal can be accumulated in the tissue such as fat, muscle of livestock, enter in human foods chain, the systemic immune function such as human liver, kidney can be reduced to a certain extent and decline.The harm of changing food waste to environment, society is day by day severe, and therefore carrying out harmless treatment to changing food waste has important society, environmental effect.
There are the characteristics such as moisture content is high, oil content is high, viscosity is high, complicated component due to changing food waste, therefore first will carry out science, feasible pretreatment to the harmless treatment of changing food waste.Traditional changing food waste pretreatment measure is primarily of operation compositions such as Separation of Solid and Liquid, fragmentation, screening, slurrying, water-oil separatings, not only technique chain length, also because the high viscosity characteristic of changing food waste, high to the requirement of process equipment, also usually cause that equipment blocks, disposal ability declines, and even equipment parking etc. has a strong impact on the situation that system normally runs.Therefore, be badly in need of a set of pretreating process meeting changing food waste characteristic, to ensure the normal operation of changing food waste innocuity disposal system.
Summary of the invention
The technical problem to be solved in the present invention is the particularity of component for Chinese changing food waste and composition, there is provided a kind of can efficiently, fast, be stably separated the method for changing food waste each main component, described method shortens changing food waste treatment process chain, be convenient to the through engineering approaches application of changing food waste harmless treatment, reduce taking and polluting environmental resource simultaneously, obtain economy, society, environment comprehensive benefit.
The preprocess method of changing food waste of the present invention, comprises the steps:
(1) by hopper, the changing food waste received on fortune vehicle is directly discharged into wet solution in tank, adopts damp and hot method for hydrolysis by the virus in changing food waste, the abundant deactivation of germ;
(2) material after damp and hot hydrolysis enters integrated sorter, be separated pulpous state liquid phase material and the larger solid waste of particle diameter, the solid waste that the described particle diameter sub-elected is larger is sent to incineration plant or landfill yard carries out innoxious burning or landfill, described pulpous state liquid phase material enters three phase separation all-in-one, and described pulpous state liquid phase material comprises through hydrolysis, the organic materials of refinement and aqueous phase liquid material;
(3) described three phase separation all-in-one is separated oil, water and the slag three-phase in described pulpous state liquid phase material, respectively stored in grease storage tank, liquid storage tank and solid organic matter feed bin.
The preprocess method of changing food waste of the present invention, also comprise and dewatering delivery is set, the solid waste that the described particle diameter sub-elected by described integrated sorter is larger is discharged after processed, the solid waste that dry described particle diameter is larger is sent to incineration plant or landfill yard carries out innoxious burning or landfill, and the aqueous phase liquid of separation is stored in described liquid storage tank.
The preprocess method of changing food waste of the present invention, also comprise and surge tank is set, collect the pulpous state liquid phase material that described integrated sorter is separated, and described pulpous state liquid phase material is transported in described three phase separation all-in-one by delivery pump, the effect that described surge tank also has buffering and regulates, by the regulating action of surge tank, stable, to regulate three phase separation all-in-one feed rate, improves separating effect and efficiency.
The preprocess method of changing food waste of the present invention, wherein in step (1), the condition of damp and hot hydrolysis is: temperature 150 DEG C, pressure 0.48Mpa.
The preprocess method of changing food waste of the present invention, wherein said method also comprises and arranges gas sampling and treatment system, carries out centralized collection process to the foul smell produced in processing procedure.
The preprocess method difference from prior art of changing food waste of the present invention is that the preprocess method of changing food waste of the present invention is simple, treatment cycle is short, traditional changing food waste pretreatment measure is primarily of Separation of Solid and Liquid, broken, screening, slurrying, the operation compositions such as water-oil separating, not only technique chain length, also because the high viscosity characteristic of changing food waste, high to the requirement of process equipment, equipment is usually caused to block, the disposal ability even equipment parking etc. that declines has a strong impact on the situation that system normally runs, the method of the invention is by means of only damp and hot hydrolysis, comprehensive sorting, three phase separation three steps just can realize the pretreatment of changing food waste, convenient and swift, reach the efficient of each key component of changing food waste, fast, stable separation, change the complicated loaded down with trivial details pretreatment mode of kitchen waste preprocessing technology in the past, shorten changing food waste treatment process chain, be convenient to the through engineering approaches application of changing food waste harmless treatment.The present invention is by damp and hot hydrolysis process, animal and plant fat in changing food waste is fully separated out, and the rate of recovery of grease is improved, simultaneously organic materials be hydrolyzed, refinement, in last handling process after this, reach best anaerobic fermentation conditions, improve the conversion ratio of biomass energy; The method of the invention also comprises and arranges dewatering delivery, decreases the moisture of the solid waste of discharge, and is recycled by aqueous phase liquid, improves the recovery utilization rate of utility, more environmental protection; Three phase separation all-in-one is separated grease, organic materials and aqueous phase liquid and preserves respectively, three kinds of different materials can carry out different advanced treating: grease can be processed into biodiesel, water can carry out anaerobic fermentation output biogas, and solid organic matter can process by fermentation and make fertilizer or microbial inoculum; For controlling the secondary pollution that in changing food waste processing procedure, technology waste gas produces environment, changing food waste technology waste gas being set and collecting and treatment system, send into deodoration system after centralized collection is carried out to the foul smell of system generation and process, rear discharge up to standard.
The technology-oriented discipline span of the present invention's application is comparatively large, contain various, multi-disciplinary technique and the technology such as mechanical kinetics, industrial automatic control, microbiology, biochemistry, thermophysics, Environmental Engineering.Multinomial technological innovation is had in the approach of protection of the environment, extended resources circulation, short to the pretreating process flow process of changing food waste, equipment is few, reliability is high.Described preprocess method of the present invention relates to multiple treatment facility, and comprise changing food waste hopper, wet solution tank, integrated sorter, surge tank, dewatering delivery, three phase separation all-in-one etc., described equipment is known device.
The preprocess method of changing food waste of the present invention is by damp and hot hydrolysis pretreatment process, realize the separation and culture of each key component of changing food waste, improve the effect of changing food waste harmless treatment, improve the conversion ratio of the kitchen waste biomass energy, improve the economic benefit of changing food waste into resources product, reduce the cost payout of changing food waste process; Preprocess method of the present invention overcomes technological gap in all relevant changing food waste preconditioning techniques consulted both at home and abroad and defect, for the component of Chinese changing food waste and the particularity of composition, be integrated with new changing food waste preconditioning technique technique, solve technique chain length in existing kitchen waste preprocessing technology, equipment manufacturing cost be high, reliability is low, the technological deficiency such as poor stability, reduce taking and polluting environmental resource simultaneously, obtain economy, society, environment comprehensive benefit.
Be described further below in conjunction with the preprocess method of drawings and Examples to changing food waste of the present invention.
Accompanying drawing explanation
Fig. 1 is the flow chart of the preprocess method of changing food waste of the present invention.
Detailed description of the invention
As shown in Figure 1, changing food waste is received after treatment system delivered to by fortune car by special changing food waste and is separated in tank through directly being dropped into by hopper to wet;
Wet solution tank is resistant to elevated temperatures pressure vessel, and under certain pressure and temperature conditions, (temperature 150 DEG C, pressure 0.48Mpa) carries out damp and hot hydrolysis to changing food waste, and the thermal source of damp and hot hydrolysis is steam; By damp and hot hydrolysis process, the animal and plant fat in changing food waste is fully separated out, and the rate of recovery of grease is improved, simultaneously organic materials be hydrolyzed, refinement, material viscosity, mobility improve;
Material after damp and hot hydrolysis enters in integrated sorter, and the material viscosity after damp and hot hydrolysis process, mobility improve, the conveying being convenient to material be separated; In integrated sorter, organic materials through hydrolysis, refinement enters liquid phase buffer tank by screen cloth along with liquid material, remain the larger different miscellaneous material such as plastics, bamboo wood, pottery, glass, metal, textile fabric of particle diameter then not by screen cloth, discharged by the foreign substances discharge gate of discharge mechanism via integrated sorter;
The different foreign material material that integrated sorter sieves out carries out processed through dewatering delivery, and solid material finally processes disposal after reaching the requirement of landfill or burning, and aqueous organic solution enters liquid storage tank via pipeline;
The liquid phase material collected in surge tank enters three phase separation all-in-one by delivery pump, this equipment can realize the three phase separation of liquid phase material oil, water, slag, material after separation is respectively stored in grease storage tank, liquid storage tank and solid organic matter feed bin, three kinds of different materials can carry out different advanced treating: grease can be processed into biodiesel, aqueous phase can carry out anaerobic fermentation output biogas, and solid organic matter can process by fermentation and make fertilizer or microbial inoculum;
For controlling the secondary pollution that in changing food waste preprocessing process, technology waste gas produces environment, technology waste gas being set and collecting and treatment system, send into deodoration system after centralized collection is carried out to the foul smell of system generation and process, rear discharge up to standard.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.

Claims (3)

1. a preprocess method for changing food waste, is characterized in that: comprise the steps:
(1) by hopper, the changing food waste received on fortune vehicle is directly discharged into wet solution in tank, adopts damp and hot method for hydrolysis by the virus in changing food waste, the abundant deactivation of germ;
(2) material after damp and hot hydrolysis enters integrated sorter, be separated pulpous state liquid phase material and the larger solid waste of particle diameter, the solid waste that the described particle diameter sub-elected is larger is sent to incineration plant or landfill yard carries out innoxious burning or landfill, and described pulpous state liquid phase material enters three phase separation all-in-one;
(3) described three phase separation all-in-one is separated oil, water and the slag three-phase in described pulpous state liquid phase material, respectively stored in grease storage tank, liquid storage tank and solid organic matter feed bin;
In described step (1), the condition of damp and hot hydrolysis is: temperature 150 DEG C, pressure 0.48Mpa;
The preprocess method of described changing food waste also comprises and arranges gas sampling and treatment system, carries out centralized collection process to the foul smell produced in processing procedure; The preprocess method of described changing food waste also comprises and arranges dewatering delivery, the solid waste that the described particle diameter sub-elected by described integrated sorter is larger is discharged after processed, the solid waste that dry described particle diameter is larger is sent to incineration plant or landfill yard carries out innoxious burning or landfill, and the aqueous phase liquid of separation is stored in described liquid storage tank.
2. the preprocess method of changing food waste according to claim 1, it is characterized in that: the preprocess method of described changing food waste also comprises and arranges surge tank, collect the pulpous state liquid phase material that described integrated sorter is separated, and described pulpous state liquid phase material is transported in described three phase separation all-in-one by delivery pump.
3. the preprocess method of changing food waste according to claim 2, is characterized in that: pulpous state liquid phase material described in described step (2) comprises through hydrolysis, the organic materials of refinement and aqueous phase liquid material.
CN201310204050.7A 2013-05-28 2013-05-28 A kind of preprocess method of changing food waste Expired - Fee Related CN103272828B (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480632B (en) * 2013-09-24 2015-08-19 华南农业大学 A kind of Kitchen waste hydrothermal three-phase separation system
CN105149323B (en) * 2015-09-30 2017-05-17 烟台润达垃圾处理环保股份有限公司 Process and device for quickly comprehensively treating household garbage
CN105598122A (en) * 2015-12-22 2016-05-25 中国城市建设研究院有限公司 Full-automatic pretreatment system and method for waste kitchen grease
CN106269788A (en) * 2016-08-16 2017-01-04 杭州新世纪能源环保工程股份有限公司 One way of life garbage burning factory works in coordination with the method that full dose processes changing food waste
CN106673291A (en) * 2016-12-29 2017-05-17 嘉兴市绿能环保科技有限公司 Continuous scale centralized treatment process for waste oil of kitchen
CN106734122A (en) * 2017-04-05 2017-05-31 上海元始环境科技发展有限公司 A kind of method for innocent treatment of kitchen garbage
CN107321771A (en) * 2017-08-25 2017-11-07 中国城市建设研究院有限公司 A kind of processing method of kitchen garbage

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CN1241366A (en) * 1998-07-13 2000-01-19 张养坤 Feed and organic fertilizer producing process by utilizing kitchen waste
CN1923385A (en) * 2006-09-25 2007-03-07 上海餐余垃圾处理技术有限公司 Novel application method of kitchen refuse as resource for ecological cycle aquaculture

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JP2005330448A (en) * 2004-05-17 2005-12-02 Yukie Matsuo Fuel from food waste material (cooking waste, and the like) and method for producing the same
CN101537423A (en) * 2009-04-27 2009-09-23 韩洪波 Domestic garbage treatment method of first cooking and then wet separation
CN202028604U (en) * 2011-04-08 2011-11-09 凯天环保科技股份有限公司 Efficient pre-treating equipment for kitchen waste
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CN1241366A (en) * 1998-07-13 2000-01-19 张养坤 Feed and organic fertilizer producing process by utilizing kitchen waste
CN1923385A (en) * 2006-09-25 2007-03-07 上海餐余垃圾处理技术有限公司 Novel application method of kitchen refuse as resource for ecological cycle aquaculture

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Inventor after: Xu Wenlong

Inventor after: Zhang Bo

Inventor after: Deng Haiwen

Inventor after: Yang Liu

Inventor before: Xu Wenlong

Inventor before: Wang Lili

Inventor before: Guo Xu

Inventor before: Zhao Xiongsheng

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Address after: 100120 Beijing Xicheng District Dewai Street No. 36 block A

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Co-patentee after: Wang Lili

Address before: 100120 Beijing city Xicheng District Deshengmen Street No. 36

Co-patentee before: Xu Wenlong

Patentee before: City high tech (Beijing) Environmental Technology Co., Ltd.

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