CN112457082A - Aerobic fermentation method for organic waste treatment - Google Patents
Aerobic fermentation method for organic waste treatment Download PDFInfo
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- CN112457082A CN112457082A CN202011602857.2A CN202011602857A CN112457082A CN 112457082 A CN112457082 A CN 112457082A CN 202011602857 A CN202011602857 A CN 202011602857A CN 112457082 A CN112457082 A CN 112457082A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/10—Addition or removal of substances other than water or air to or from the material during the treatment
- C05F17/15—Addition or removal of substances other than water or air to or from the material during the treatment the material being gas
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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
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- General Chemical & Material Sciences (AREA)
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- Tropical Medicine & Parasitology (AREA)
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Abstract
The invention discloses an aerobic fermentation method for organic waste treatment, which comprises the following steps: firstly, pretreating organic waste to obtain a garbage material to be fermented; secondly, conveying the garbage material finally obtained in the first step into a fermentation bin through a conveying device, adding aerobic microbial inoculum, fully mixing, and preparing for fermentation; thirdly, turning the garbage materials in a fermentation bin to provide sufficient oxygen and a sufficient contact surface for the aerobic microbial agent, so that the components of the materials are fully mixed, and the components of the product are relatively stable; and fourthly, in different stages in the third step, introducing oxygen into the fermentation bin by using fans with different powers to ensure that the oxygen demand of each stage is met. The invention can provide a suitable environment for the aerobic fermentation of the kitchen garbage and can reduce the cost.
Description
Technical Field
The invention relates to the technical field of kitchen waste aerobic fermentation, in particular to an organic waste treatment aerobic fermentation method.
Background
Along with the improvement of the material life of people, the quantity of kitchen waste is increased sharply, and the annual output of the kitchen waste exceeds 3000 ten thousand tons at present. The kitchen waste comprises leftovers, vegetable leaves, fruit peels, eggshells, tea leaves, bones and the like, generally refers to waste food materials and waste or residual food generated in dietary activities, has the characteristics of easy decay and deterioration, easy fermentation, easy stink generation and the like, and brings various hazards to the environment and the health of people if the kitchen waste cannot be reasonably and effectively treated. Kitchen waste is one of organic waste, is used as organic waste, has rich organic matter content, is usually recycled by adopting an aerobic fermentation technology in the actual treatment process, but the existing equipment cannot well meet the conditions required by aerobic microbial fermentation or has overhigh realization cost, and is not suitable for large-scale popularization and use.
Disclosure of Invention
The invention aims to provide an aerobic fermentation method for organic waste treatment, which can provide a suitable environment for aerobic fermentation of organic waste such as kitchen garbage and the like, improve the effect of the aerobic fermentation, reduce the cost and facilitate the realization.
In order to achieve the purpose, the invention provides the following technical scheme: an organic waste treatment aerobic fermentation method comprises the following steps:
firstly, pretreating organic waste to obtain a garbage material to be fermented;
secondly, conveying the garbage material finally obtained in the first step into a fermentation bin through a conveying device, adding aerobic microbial inoculum, fully mixing, and preparing for fermentation;
thirdly, turning the garbage materials in a fermentation bin to provide sufficient oxygen and a sufficient contact surface for the aerobic microbial agent, so that the components of the materials are fully mixed, and the components of the product are relatively stable;
fourthly, in different stages in the third step, the fans with different powers are used for introducing oxygen into the fermentation chamber, so that the oxygen demand of each stage is ensured to be met; the oxygen content of the fermentation chamber is 2-5ppm, the fermentation temperature is 55-75 ℃, and the fermentation time is 15-35 days.
Preferably, in the first step, the organic waste pretreatment sequentially comprises bag breaking, screening, crushing, screening and dewatering.
Preferably, in the second step, the fermentation chamber is provided with:
the pile turning device is used for turning and mixing the materials;
the aeration pipe, the aeration pipe is arranged according to the site conditions, and connects the fan of different power respectively, and the fan of different power forces the aeration to the rubbish material respectively in the earlier stage, the well earlier stage, the middle and later stage, the later stage in fermentation process, and power diminishes progressively in proper order, provides sufficient oxygen for each stage rubbish fermentation.
Preferably, the turning device adopts a self-propelled throwing machine, and the materials are automatically moved backwards and conveyed and are exchanged up and down to be fully mixed by a chain plate type progressive turning method.
Preferably, the blower is a roots blower.
Preferably, in the third step, biochemical ring opening and chain breaking are carried out on the materials while turning the pile, so that the production of garbage biomolecules is changed, and the produced products are refined.
Compared with the prior art, the invention has the following beneficial effects:
firstly, materials are fully mixed through the pile turning process, the components of a product are relatively stable, biochemical ring opening and chain breaking are carried out on the materials while pile turning, so that the production of garbage biomolecules is changed, the product is more refined, the materials are fully contacted with oxygen in the pile turning process, dead angles caused by oxygen supply fermentation are prevented, an anaerobic section is formed, gases such as odor, methane and the like are prevented from being generated, and moisture in the materials is dispersed and better evaporated through the exchange of upper and lower materials;
secondly, in different stages of the fermentation process, fans with different powers are used for carrying out forced aeration on the materials, if the oxygen demand is large in the early stage of the fermentation process, the high-power fans are used for carrying out aeration on the materials at the moment, so that sufficient oxygen supply can be ensured, anaerobic fermentation caused by insufficient oxygen can be prevented, odor can be generated, organic matters in the materials are reduced along with the aerobic fermentation, the oxygen demand is reduced, if the high-power fans are used for carrying out aeration at the moment, the energy waste can be caused, the aerobic fermentation cost can be improved, the power of the fans can be reduced, the materials are aerated, the oxygen required by the aerobic fermentation can be met, and meanwhile, the cost can be reduced.
The equipment related to the invention is the existing equipment which can be directly purchased in the market, and the functions required by crushing, sorting and the like can be realized. The method of the invention can be carried out by adopting the existing method in the field without any specific method for the process steps and process parameters which are not recorded.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention;
FIG. 2 is a flow chart of the present invention for pre-treating organic waste.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: an organic waste treatment aerobic fermentation method comprises the following steps:
firstly, pretreating organic waste to obtain a garbage material to be fermented;
secondly, conveying the garbage material finally obtained in the first step into a fermentation bin through a conveying device, adding aerobic microbial inoculum, fully mixing, and preparing for fermentation;
thirdly, turning the garbage materials in a fermentation bin to provide sufficient oxygen and a sufficient contact surface for the aerobic microbial agent, so that the components of the materials are fully mixed, and the components of the product are relatively stable;
fourthly, in different stages in the third step, the fans with different powers are used for introducing oxygen into the fermentation chamber, so that the oxygen demand of each stage is ensured to be met; the oxygen content of the fermentation chamber is 2-5ppm, the fermentation temperature is 55-75 ℃, and the fermentation time is 15-35 days.
Specifically, in the first step, the organic waste pretreatment sequentially comprises bag breaking, screening, crushing, screening and dewatering.
In the second step, be provided with in the fermentation storehouse:
the pile turning device is used for turning and mixing the materials;
the aeration pipe, the aeration pipe is arranged according to the site conditions, and connects the fan of different power respectively, and the fan of different power forces the aeration to the rubbish material respectively in the earlier stage, the well earlier stage, the middle and later stage, the later stage in fermentation process, and power diminishes progressively in proper order, provides sufficient oxygen for each stage rubbish fermentation.
The turning device adopts a self-propelled throwing machine, and the materials are automatically moved backwards and conveyed and are exchanged up and down to be fully mixed by a chain plate type progressive turning method.
The blower adopts a Roots blower.
In the third step, biochemical ring opening and chain breaking are carried out on the materials while turning the piles, so that the production of garbage biomolecules is changed, and the produced products are more refined.
Examples
The self-propelled throwing machine is divided into 60 sections, organic wastes which are subjected to pretreatment and are ready for aerobic fermentation are thrown into a first section every day, the organic wastes are sequentially thrown and turned from the previous day to the next section, each group of the wastes are thrown and turned for about 30 to 40 days, and progressive fermentation is carried out, wherein at least more than 28 days are guaranteed.
In the throwing and turning process, the materials are subjected to forced aeration through fans with different powers, so that sufficient oxygen and a sufficient contact surface are provided for the aerobic microbial agent, the components of the materials are sufficiently mixed, and the relatively stable components of the product are ensured.
The invention uses fans with different powers to carry out forced aeration on materials at different stages of the fermentation process, for example, the requirement for oxygen is large in the early stage of the fermentation process, at the moment, the high-power fan is adopted to carry out aeration on the materials, the sufficient oxygen supply can be ensured, the anaerobic fermentation caused by insufficient oxygen can be prevented, odor can be generated, organic matters in the materials are reduced along with the aerobic fermentation, so that the requirement for oxygen is reduced, if the high-power fan is still adopted for aeration at the moment, the energy waste can be caused, the aerobic fermentation cost can be improved, at the moment, the power of the fan can be reduced, the aeration can be carried out on the materials, the oxygen required by the aerobic fermentation can be met, and the cost can be reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An aerobic fermentation method for organic waste treatment is characterized by comprising the following steps:
firstly, pretreating organic waste to obtain a garbage material to be fermented;
secondly, conveying the garbage material finally obtained in the first step into a fermentation bin through a conveying device, adding aerobic microbial inoculum, fully mixing, and preparing for fermentation;
thirdly, turning the garbage materials in a fermentation bin to provide sufficient oxygen and a sufficient contact surface for the aerobic microbial agent, so that the components of the materials are fully mixed, and the components of the product are relatively stable;
fourthly, in different stages in the third step, the fans with different powers are used for introducing oxygen into the fermentation chamber, so that the oxygen demand of each stage is ensured to be met; the oxygen content of the fermentation chamber is 2-5ppm, the fermentation temperature is 55-75 ℃, and the fermentation time is 15-35 days.
2. The aerobic fermentation method for organic waste treatment according to claim 1, wherein: in the first step, the organic waste pretreatment sequentially comprises bag breaking, screening, crushing, screening and dewatering.
3. The aerobic fermentation method for organic waste treatment according to claim 1, wherein: in the second step, be provided with in the fermentation storehouse:
the pile turning device is used for turning and mixing the materials;
the aeration pipe, the aeration pipe is arranged according to the site conditions, and connects the fan of different power respectively, and the fan of different power forces the aeration to the rubbish material respectively in the earlier stage, the well earlier stage, the middle and later stage, the later stage in fermentation process, and power diminishes progressively in proper order, provides sufficient oxygen for each stage rubbish fermentation.
4. The aerobic fermentation method for organic waste treatment according to claim 3, wherein: the turning device adopts a self-propelled throwing machine, and the materials are automatically moved backwards and conveyed and are exchanged up and down to be fully mixed by a chain plate type progressive turning method.
5. The aerobic fermentation method for organic waste treatment according to claim 3, wherein: the blower adopts a Roots blower.
6. The aerobic fermentation method for organic waste treatment according to claim 1, wherein: in the third step, biochemical ring opening and chain breaking are carried out on the materials while turning the piles, so that the production of garbage biomolecules is changed, and the produced products are more refined.
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| CN202011602857.2A CN112457082A (en) | 2020-12-30 | 2020-12-30 | Aerobic fermentation method for organic waste treatment |
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| CN202011602857.2A CN112457082A (en) | 2020-12-30 | 2020-12-30 | Aerobic fermentation method for organic waste treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113620728A (en) * | 2021-09-13 | 2021-11-09 | 齐庆俊 | Aerobic fermentation treatment method for organic solid waste |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108623113A (en) * | 2018-05-11 | 2018-10-09 | 厦门中环能科技有限公司 | A kind of aerobic fermentation device of sealable dynamic deodorizing |
| CN111592393A (en) * | 2020-05-27 | 2020-08-28 | 北京环境工程技术有限公司 | Method for rural multi-source organic waste composting |
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- 2020-12-30 CN CN202011602857.2A patent/CN112457082A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108623113A (en) * | 2018-05-11 | 2018-10-09 | 厦门中环能科技有限公司 | A kind of aerobic fermentation device of sealable dynamic deodorizing |
| CN111592393A (en) * | 2020-05-27 | 2020-08-28 | 北京环境工程技术有限公司 | Method for rural multi-source organic waste composting |
Non-Patent Citations (3)
| Title |
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| 钟振洋: "《环卫机械设备合理选择与经济使用》", 31 August 1999, 北京：中国建筑工业出版社 * |
| 闵航: "《微生物学》", 28 February 2005, 杭州：浙江大学出版社 * |
| 雍毅 等: "《市政污泥特性与再生利用引论》", 31 May 2016, 北京：中国环境出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113620728A (en) * | 2021-09-13 | 2021-11-09 | 齐庆俊 | Aerobic fermentation treatment method for organic solid waste |
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Inventor after: Xu Shaowei Inventor after: Shi Jiren Inventor after: Liu Bingbing Inventor before: Xu Shaowei Inventor before: Shi Jiren Inventor before: Liu Bingbing |
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