CN102101796A - High-quality composting pretreatment method and device for urban kitchen waste - Google Patents
High-quality composting pretreatment method and device for urban kitchen waste Download PDFInfo
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- CN102101796A CN102101796A CN2010105125946A CN201010512594A CN102101796A CN 102101796 A CN102101796 A CN 102101796A CN 2010105125946 A CN2010105125946 A CN 2010105125946A CN 201010512594 A CN201010512594 A CN 201010512594A CN 102101796 A CN102101796 A CN 102101796A
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Abstract
The invention relates to a high-quality composting pretreatment method and a high-quality composting pretreatment device for urban kitchen waste. The kitchen waste is pressed by a pressofiner; the pressed kitchen waste, a moisture regulation auxiliary material and a biological regulation auxiliary material are put into an agitation tank of a stirrer; and the mixed materials are crushed, rolled and stirred uniformly to form a composting pretreatment substance. By the invention, the kitchen waste can be pretreated efficiently in real time, and the high-quality composting of the kitchen waste is facilitated.
Description
Technical field
The present invention relates to a kind of city changing food waste high-quality composting pretreatment process and device.
Background technology
Many and other domestic garbage mixing discharging of the changing food waste of concentrated dischargings such as domestic most of restaurant, dining room, owing to contain a large amount of moisture in the changing food waste, rot easily, the domestic refuse of dual disposal not only is difficult to separate and recycling, and in treating processes, can produce a large amount of percolates, landfill gas, burning waste gas etc., cause secondary pollution.Changing food waste was valuable organic resource originally, and had but brought very big difficulty and drawback to subsequent disposal etc. after other domestic garbage mixing.
In the prior art, utilize methods such as screening, gravity treatment, magnetic separation, electric separation, washing, photometric sorting to carry out refuse classification and handle, in the domestic refuse of mixed collection, isolate changing food waste and carry out compost treatment.Yet this preceding method is difficult to solve the rotten problem of environmental pollution that waits in the changing food waste collection process, and isolated changing food waste poor properties brings a lot of drawbacks to follow-up composting and products thereof, and the composting quality is difficult to guarantee.For the high-quality composting that realizes that the city changing food waste advances, the city changing food waste is carried out the pre-treatment of real-time high-efficiency, be the technical problem that needs to be resolved hurrily at present.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of city changing food waste high-quality composting pretreatment process and device, can carry out the pre-treatment of real-time high-efficiency to changing food waste, helps realizing the high-quality composting of changing food waste.
The present invention is based on same inventive concept, have two independently technical schemes:
1, a kind of city changing food waste high-quality composting pretreatment process, it is characterized in that: changing food waste is squeezed with expeller, changing food waste after the squeezing and moisture adjusting auxiliary material, the biological auxiliary material of regulating are positioned in the steel basin of stirrer, aforementioned mixture is carried out fragmentation, rolls and stirs, obtain composting pre-treatment thing.
Changing food waste, moisture are regulated auxiliary material, the biological shared parts by weight of auxiliary material of regulating are respectively, and changing food waste 80-130, moisture are regulated auxiliary material 5-10, the biological auxiliary material 10-20 that regulates.
Moisture is regulated auxiliary material can be waste paper, sawdust, rice husk or stalk, and the biological auxiliary material of regulating can be the compost returning charge of fermenting.
With the changing food waste moisture content after the expeller squeezing is 65-75%, and the moisture content of mixture is 50%-60% in the steel basin.
During stirring, stirrer then with 120 rev/mins of rotation speed operation 50-65 minutes, makes the mixture temperature in the steel basin finally reach the 80-90 degree with 60 rev/mins of rotating speeds running earlier 10 minutes.
2, a kind of device of realizing aforementioned city changing food waste high-quality composting pretreatment process, comprise expeller, it is characterized in that: comprise expeller, it is characterized in that: the discharge port of expeller is positioned at the top of stirrer steel basin, on the vertical stir shaft in the steel basin vertical stirring rake is housed, the outside of vertical stirring rake is the inclined-plane that matches with the steel basin inwall.
Horizontally disposed arc also is housed on the vertical stir shaft stirs blade.
The vertical stirring rake outside is the 10-20 millimeter with the gap of steel basin inwall.
The axis of expeller and horizontal direction are 60 degree.
Vertical stir shaft is driven through retarding mechanism by motor.
The beneficial effect that the present invention has:
Changing food waste squeezes through expeller earlier and removes part moisture, add moisture again and regulate auxiliary material, make the moisture content of mixture reduce to 50%-60%, the rotation that utilizes vertical stirring rake, arc to stir blade again, the changing food waste mixture is carried out fragmentation, rolls, mixes, utilize the heat that friction produced on stirrer paddle, material and stirring cell wall inclined-plane to make the mixture temperature can reach the 80-90 degree.By to the fragmentation of material, roll, high temperature makes material organize swollen softening, tinyization, interpenetrate and homogenize, and suppress growing of corrupt assorted bacterium, the pre-treatment thing does not have the dirt sense, be difficult for producing corruption and stink, appearance color is even, the moisture of handled thing, pH value, rerum naturas such as N, C are homogenized, and satisfy the requirement of production high-quality compost.Pre-processing device of the present invention occupation of land simple in structure is few, concentrates the on-the-spot real-time high-efficiency rate of discharging ground to carry out the pre-treatment of high-quality composting at the city changing food waste, has more operability.
Description of drawings
Fig. 1 is the structural representation of composting pre-processing device of the present invention;
Fig. 2 is the structural representation of composting pre-processing device steel basin part of the present invention;
Fig. 3 is the plan structure synoptic diagram of composting pre-processing device steel basin part of the present invention.
Embodiment
As shown in Figure 1, city changing food waste high-quality composting pretreatment unit is made up of expeller 1, steel basin 2, step-down gear 4, motor 5, pre-treatment body feed tank 6, pressing filtrate storage tank 7, hopper 8.The discharge port of expeller 1 is positioned at the top of stirrer steel basin 2, and the axis of expeller and horizontal direction are 60 degree, and vertical stir shaft 9 is driven through step-down gear 4 by motor 5.As shown in Figure 1-Figure 3, on the vertical stir shaft 9 in the steel basin vertical stirring rake 3 is housed, this vertical stirring rake is made of composite blade, the outside of vertical stirring rake is the inclined-plane that matches with the steel basin inwall, the vertical stirring rake outside is the 10-20 millimeter with the gap delta of steel basin inwall, and δ is 15 millimeters in the present embodiment; Horizontally disposed arc also is housed on the vertical stir shaft stirs blade 10, vertical stirring rake 3 and arc stirring blade 10 can be provided with a plurality of, decide according to the capacity of steel basin.
When carrying out the pre-treatment of changing food waste high-quality composting, the city changing food waste is added material bin 8,1 pair of changing food waste of expeller squeezes, the squeezing of changing food waste moisture content is 65-75%, changing food waste after the squeezing enters steel basin, add moisture from the steel basin inlet simultaneously and reconcile auxiliary material and the biological auxiliary material of regulating, the moisture content that makes mixture is 50-60%.Changing food waste after the squeezing, moisture are regulated auxiliary material, the biological shared parts by weight of auxiliary material of regulating are respectively, and the changing food waste 80-130 after the squeezing, moisture are regulated auxiliary material 5-10, the biological auxiliary material 10-20 that regulates.Moisture is regulated auxiliary material can be organic wastes such as waste paper, sawdust, rice husk or stalk, and the biological auxiliary material of regulating can be the compost returning charge (can add required composite fungus agent) of fermenting.
Embodiment 1: the changing food waste 90kg of certain corporation eatery, moisture is about 85%, and changing food waste is squeezed with expeller, makes the moisture of changing food waste reach 68%, wastepaper 6kg with changing food waste after the squeezing and slitter discharge, compost returning charge 12kg adds the composting pre-processing device and handled 60 minutes, finally obtains the composting pre-treatment thing 59.2kg of homogeneous, composting pre-treatment thing contains moisture 54.2%, total carbon 38.21%, total nitrogen 1.05%, C/N=36.39%.
Embodiment 2: the changing food waste 120kg of certain corporation eatery, moisture is about 88%, and changing food waste is squeezed with expeller, makes the moisture of changing food waste reach 70.1%, wastepaper 8kg with changing food waste after the squeezing and slitter discharge, compost returning charge 18kg adds the composting pre-processing device and handled 60 minutes, finally obtains the composting pre-treatment thing 73kg of homogeneous, composting pre-treatment thing contains moisture 53.6%, total carbon 41.25%, total nitrogen 1.12%, C/N=36.83%.
Embodiment 3: the changing food waste 102kg of certain hotel, moisture is about 86%, and changing food waste is squeezed with expeller, makes the moisture of changing food waste reach 71%, with changing food waste and the sawdust 7kg after the squeezing, compost returning charge 14kg adds the composting pre-processing device and handled 60 minutes, finally obtains the composting pre-treatment thing 73.6kg of homogeneous, composting pre-treatment thing contains moisture 57.7%, total carbon 42.10%, total nitrogen 1.29%, C/N=32.64%.
Claims (10)
1. city changing food waste high-quality composting pretreatment process, it is characterized in that: changing food waste is squeezed with expeller, changing food waste after the squeezing and moisture adjusting auxiliary material, the biological auxiliary material of regulating are positioned in the steel basin of stirrer, aforementioned mixture is carried out fragmentation, rolls and stirs, obtain composting pre-treatment thing.
2. city according to claim 1 changing food waste high-quality composting pretreatment process, it is characterized in that: changing food waste, moisture are regulated auxiliary material, the biological shared parts by weight of auxiliary material of regulating are respectively, and changing food waste 80-130, moisture are regulated auxiliary material 5-10, the biological auxiliary material 10-20 that regulates.
3. city according to claim 2 changing food waste high-quality composting pretreatment process is characterized in that: moisture is regulated auxiliary material can be waste paper, sawdust, rice husk or stalk, and the biological auxiliary material of regulating can be the compost returning charge of fermenting.
4. city according to claim 3 changing food waste high-quality composting pretreatment process is characterized in that: with the changing food waste moisture content after the expeller squeezing is 65-75%, and the moisture content of mixture is 50%-60% in the steel basin.
5. city according to claim 4 changing food waste high-quality composting pretreatment process, it is characterized in that: during stirring, stirrer then with 120 rev/mins of rotation speed operation 50-65 minutes, makes the mixture temperature in the steel basin finally reach the 80-90 degree with 60 rev/mins of rotating speeds running earlier 10 minutes.
6. device of realizing the described city of claim 1 changing food waste high-quality composting pretreatment process, comprise expeller, it is characterized in that: the discharge port of expeller is positioned at the top of stirrer steel basin, on the vertical stir shaft in the steel basin vertical stirring rake is housed, the outside of vertical stirring rake is the inclined-plane that matches with the steel basin inwall.
7. city according to claim 6 changing food waste high-quality composting pretreatment unit is characterized in that: horizontally disposed arc also is housed on the vertical stir shaft stirs blade.
8. city according to claim 7 changing food waste high-quality composting pretreatment unit is characterized in that: the vertical stirring rake outside is the 10-20 millimeter with the gap of steel basin inwall.
9. city according to claim 8 changing food waste high-quality composting pretreatment unit is characterized in that: the axis of expeller and horizontal direction are 60 degree.
10. according to any one described city changing food waste high-quality composting pretreatment unit of claim 6 to 9, it is characterized in that: vertical stir shaft is driven through retarding mechanism by motor.
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| CN2010105125946A CN102101796A (en) | 2010-10-20 | 2010-10-20 | High-quality composting pretreatment method and device for urban kitchen waste |
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Cited By (7)
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| CN102746035A (en) * | 2012-07-19 | 2012-10-24 | 东莞市环境科学研究所 | In-situ reduction method for kitchen wastes in residential communities |
| CN102775201A (en) * | 2012-07-20 | 2012-11-14 | 宋英豪 | Carbon-sequestering high-activity microbial organic fertilizer and preparation method thereof |
| CN103008333A (en) * | 2012-12-31 | 2013-04-03 | 江苏大学 | Resource utilization outfit and matrixing method of straw scrap wastes |
| CN107686382A (en) * | 2017-10-27 | 2018-02-13 | 惠东县华昊生物科技有限公司 | A kind of chicken manure fermenting system and fermentation process |
| CN108147542A (en) * | 2016-12-05 | 2018-06-12 | 山东巧宾农业科技有限公司 | A kind of method of kitchen waste sewage Ecological Disposal and trans-utilization |
| CN108191467A (en) * | 2018-01-18 | 2018-06-22 | 北京建筑大学 | A kind of application of city life garbage aerobic fermentation device of high efficient resourcing |
| CN112898057A (en) * | 2021-02-03 | 2021-06-04 | 中农新科(苏州)有机循环研究院有限公司 | Method for preparing organic fertilizer based on secondary fermentation of kitchen waste |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746035A (en) * | 2012-07-19 | 2012-10-24 | 东莞市环境科学研究所 | In-situ reduction method for kitchen wastes in residential communities |
| CN102746035B (en) * | 2012-07-19 | 2014-12-10 | 东莞市环境科学研究所 | In-situ reduction method for kitchen wastes in residential communities |
| CN102775201A (en) * | 2012-07-20 | 2012-11-14 | 宋英豪 | Carbon-sequestering high-activity microbial organic fertilizer and preparation method thereof |
| CN102775201B (en) * | 2012-07-20 | 2014-10-22 | 宋英豪 | Carbon-sequestering high-activity microbial organic fertilizer and preparation method thereof |
| CN103008333A (en) * | 2012-12-31 | 2013-04-03 | 江苏大学 | Resource utilization outfit and matrixing method of straw scrap wastes |
| CN108147542A (en) * | 2016-12-05 | 2018-06-12 | 山东巧宾农业科技有限公司 | A kind of method of kitchen waste sewage Ecological Disposal and trans-utilization |
| CN107686382A (en) * | 2017-10-27 | 2018-02-13 | 惠东县华昊生物科技有限公司 | A kind of chicken manure fermenting system and fermentation process |
| CN108191467A (en) * | 2018-01-18 | 2018-06-22 | 北京建筑大学 | A kind of application of city life garbage aerobic fermentation device of high efficient resourcing |
| CN112898057A (en) * | 2021-02-03 | 2021-06-04 | 中农新科(苏州)有机循环研究院有限公司 | Method for preparing organic fertilizer based on secondary fermentation of kitchen waste |
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Application publication date: 20110622 |