CN117263729B - Additive for preparing organic liquid fertilizer by strengthening self-heating aerobic digestion of kitchen waste and use method thereof - Google Patents
Additive for preparing organic liquid fertilizer by strengthening self-heating aerobic digestion of kitchen waste and use method thereof Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000003337 fertilizer Substances 0.000 title claims abstract description 23
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- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 7
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/04—Biological compost
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/02—Apparatus for the manufacture
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of biomass solid waste treatment, in particular to an additive for preparing an organic liquid fertilizer by strengthening self-heating aerobic digestion of kitchen waste and a use method thereof. The raw materials of the additive comprise 20-30% of racemase by mass percent; 20-30% polyphenol oxidase; 10-20% protease; 10-15% pectase and 10-20% cellulase; 5-10% MnO 2. According to the invention, the additive is added into the original slurry of the kitchen waste after sorting, crushing and grinding, and the treatment is performed by using the self-heating aerobic digestion technology, so that the hydrolysis and conversion efficiency of organic matters in the kitchen waste and the humification process of the organic matters can be greatly improved, and the available organic liquid fertilizer is formed, and the organic liquid fertilizer has the advantages of small occupied area and high stabilization efficiency.
Description
Technical Field
The invention relates to the technical field of biomass solid waste treatment, in particular to an additive for preparing an organic liquid fertilizer by strengthening self-heating aerobic digestion of kitchen waste and a use method thereof.
Background
Kitchen garbage is one of urban household garbage, and is an organic waste generated in living or production processes of residential communities, food production and processing industries and catering industry. Kitchen waste includes household kitchen waste, kitchen waste and other kitchen waste (farmer market, etc.). The content ratio of kitchen garbage in urban household garbage is up to 50% -60%. Recycling and harmless treatment of kitchen waste are increasingly important. Therefore, a proper harmless, recycling and large-scale kitchen waste treatment technology is urgently needed.
At present, the main technology of recycling kitchen garbage is anaerobic digestion, aerobic composting, a feed method and the like, and other recycling technologies such as insect feeding, high-value utilization and the like cannot be widely popularized and applied due to immature technology, higher cost and lack of large-scale and stable industrial application capability. Anaerobic digestion and aerobic composting have good recycling properties and can be mutually supplemented technically and economically. But in general, the problems of long reaction period, large occupied area, high nitrogen loss, secondary pollution of odor and percolate and the like in the anaerobic digestion and aerobic composting processes of the existing kitchen wastes limit the industrial application and popularization of the kitchen wastes. Therefore, in order to solve the above problems, there is a need in the market for a method of recycling kitchen waste with a small occupied area and high stabilization efficiency.
Disclosure of Invention
Based on the above, the invention provides the additive (simply referred to as the additive) for preparing the organic liquid fertilizer by strengthening the self-heating aerobic digestion of the kitchen waste and the using method, and the additive is added into the original slurry of the kitchen waste after sorting, crushing and grinding, and the self-heating aerobic digestion technology is utilized for treatment, so that the hydrolysis and conversion efficiency of organic matters in the kitchen waste and the humification process of the organic matters can be greatly improved, and the available organic liquid fertilizer is formed, and the invention has the advantages of small occupied area and high stabilization efficiency.
In order to achieve the above object, the present invention provides the following solutions:
According to one of the technical schemes of the invention, the additive comprises, by mass, 20-30% of racemase, 20-30% of polyphenol oxidase, 10-20% of protease, 10-15% of pectinase, 10-20% of cellulase and 5-10% of MnO 2.
The second technical scheme of the invention is the application of the additive in self-heating aerobic digestion of kitchen waste.
According to the third technical scheme, the self-heating aerobic digestion performance of the kitchen waste is enhanced by adding the additive.
According to the fourth technical scheme, the fermentation broth is prepared by the method for enhancing the self-heating aerobic digestion performance of kitchen waste.
The fifth technical scheme of the invention is that the organic liquid fertilizer comprises the fermentation liquid.
The invention discloses the following technical effects:
(1) The additive disclosed by the invention has reasonable raw material composition, and by using the additive disclosed by the invention, the stabilization time of kitchen waste can be shortened, the humus concentration in the organic liquid fertilizer is increased, and the efficiency of preparing the organic liquid fertilizer from the kitchen waste through self-warming aerobic digestion is greatly improved.
(2) The method has the advantages of simple operation, short reaction period, small occupied area, less residue discharge and the like, and is a kitchen waste recycling disposal mode with great potential and prospect.
(3) The method for preparing the organic liquid fertilizer from the kitchen waste is green and efficient, and can realize rapid hydrolysis and conversion of organic matters and generation of humus in the self-heating aerobic digestion process of the urban kitchen waste with complex components by adding the additive formed by combining the enzymes and the manganese dioxide.
Detailed Description
Various exemplary embodiments of the invention will now be described in detail, which should not be considered as limiting the invention, but rather as more detailed descriptions of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In addition, for numerical ranges in this disclosure, it is understood that each intermediate value between the upper and lower limits of the ranges is also specifically disclosed. Every smaller range between any stated value or stated range, and any other stated value or intermediate value within the stated range, is also encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the invention described herein without departing from the scope or spirit of the invention. Other embodiments will be apparent to those skilled in the art from consideration of the specification of the present invention. The specification and examples of the present invention are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
The invention provides an additive, which comprises, by mass, 20-30% of racemase; 20-30% polyphenol oxidase; 10-20% protease; 10-15% pectase and 10-20% cellulase; 5-10% MnO 2.
The hydrolase (comprising protease, pectase and cellulase) in the invention has the main functions of promoting the hydrolysis of organic components in kitchen waste slurry, the product is used as a substrate of Maillard reaction, the content of the hydrolase in the whole additive is relatively high, and the cost is comprehensively considered.
As for racemase in the invention, as an important innovation point of the invention, the dry matter content in kitchen waste is generally about 35%, the content of protein is 20% -40%, protein is hydrolyzed to generate various amino acids, wherein the amino acids further comprise two types of D-type and L-type, racemase is used as an isomerase, and can catalyze substrates to generate racemization, so that L-amino acid part which is a main component is converted into D-amino acid, therefore, higher content of racemase is needed, and the invention preferably limits the addition amount of racemase to the percentage by considering the cost comprehensively.
The polyphenol oxidase is mainly used for oxidizing monophenols, dihydric phenols and the like in the hydrolysate of kitchen waste slurry to generate quinone, and the quinone is a precursor for generating humus. It plays a very critical role in the humus formation process, so higher levels are also required. Considering the cost issue in combination, the present invention preferably defines the addition amount of polyphenol oxidase as the above percentage.
In addition, mnO 2 in the invention can promote the generation of humic acid by promoting Maillard reaction of sugar and amino substances, and plays a role of a catalyst in the reaction process, and the actual action effect and cost are comprehensively considered; the Maillard reaction is the dominant reaction of humic acid production, and if excessive MnO 2 is added, the Maillard reaction can generate other byproducts to reduce the humic acid production efficiency.
In a preferred embodiment of the invention, the proteases include alkaline proteases and papain; the mass ratio of the alkaline protease to the papain is 1:1;
The cellulase comprises at least one of exo-beta-glucanase, endo-beta-glucanase and beta-glucosidase; preferably, the mass ratio of the exo-beta-glucanase, the endo-beta-glucanase and the beta-glucosidase is 1:1:1.
The invention also provides application of the additive in self-heating aerobic digestion of kitchen waste.
The hydrolase (protease, pectase and cellulase) in the additive can accelerate the release of protein and saccharide compounds in kitchen waste into a liquid phase, promote the generation of two humus precursors of reducing sugar and amino acid, and strengthen Maillard reaction and polyphenol humification paths of a reaction system; then, intracellular polysaccharide compounds and extracellular free organic carbon compounds in the system are converted into phenols by microorganisms under the action of oxidase, the phenols are converted into quinones and keto acids under the action of polyphenol oxidase, then the phenols react with amino acid compounds, condensation is carried out to form a polycyclic system, namely fulvic acid, and finally the humic acid and the humus are polymerized; the addition of polyphenol oxidase can greatly improve the content of humus in the subsequent preparation of the organic liquid fertilizer; the added pectase can cooperate with cellulase to crack plant cell walls together, enhance the bioconversion process of plant fibers and improve the humification degree of kitchen wastes. Cellulase is a generic term for a group of enzymes which degrade cellulose to glucose, and is not a monomeric enzyme, and mainly comprises exo-beta-glucanase, endo-beta-glucanase, beta-glucosidase and/or the like.
The small amount of MnO 2 in the additive can promote the generation of humic acid by promoting the reaction of sugar and amino substances, while excessive MnO 2 can cause Maillard reaction to generate other byproducts so as to influence the generation of humic acid, because the Maillard reaction is the dominant reaction of humic acid generation.
Proteolysis can produce amino acids, while amino acid fermentation can produce Volatile Fatty Acids (VFAs), but during amino acid fermentation, the VFA yield of D-amino acids is much lower than that of the corresponding L-amino acids. In addition, various proteins in the biological kingdom are composed of L-amino acids, with the exception of short peptides and individual antibiotics in the cell wall of some bacteria, and contain very few D-amino acids. The racemase in the additive can convert part of L-amino acid in protein hydrolysate in kitchen waste into D-amino acid, reduce the path of converting amino acid into VFA, strengthen the reaction of amino acid with quinone and keto acid substances, and promote the reaction system to humify.
The invention further provides a method for enhancing the self-warming aerobic digestion performance of the kitchen waste, which is characterized in that the self-warming aerobic digestion performance of the kitchen waste is enhanced by adding the additive.
In a preferred embodiment of the invention, the method comprises the steps of:
Sorting, crushing and grinding kitchen waste into slurry;
Adding the additives into the slurry, uniformly mixing, inoculating aerobic granular sludge, and performing self-warming aerobic digestion reaction; and (5) obtaining fermentation liquor after the reaction is finished.
In order to ensure the accuracy of the dosage of the additive and the convenience of operation during addition, the additive can be firstly dissolved into water to prepare a mother solution of the additive (the concentration of the additive in the mother solution of the additive is 30-50 g/L), and then the mother solution of the additive is added into the slurry ground by kitchen waste.
In a preferred embodiment of the invention, the slurry has a particle size of less than 45 mesh; the concentration of dry matter in the slurry is 8-12wt%.
In a preferred embodiment of the invention, the mass ratio of the additive to dry matter in the slurry is 1-5:1000; the inoculation amount of the aerobic granular sludge is 5-10% (v/v) of the volume of the slurry, namely the volume of the aerobic granular sludge accounts for 5-10% of the volume of the slurry.
In a preferred embodiment of the invention, the pH of the self-warming aerobic digestion reaction is 7-8, and the aeration rate is 200-250ml of air/(min.kg dry weight of kitchen waste slurry).
In a preferred embodiment of the present invention, the mixing is specifically: stirring for 1-2min under the condition of 120-200rmp, and stirring for 1-2h under the condition of 50-100 rmp.
The reason why the invention limits the rapid stirring and then the slow stirring is as follows: the quick stirring is carried out at the beginning, so that the additive is instantly, quickly, fully and uniformly dispersed into the slurry, the turbulent fluctuation of water flow is required to be severe and the quick completion is required, and the problem that the concentration of local medicament is too high due to uneven dispersion of the additive is avoided. The subsequent reaction process of the additive and the substrate requires reduced stirring strength and longer time to allow the additive to react fully with the substrate.
The invention further provides a fermentation broth prepared by the method for enhancing the self-heating aerobic digestion performance of kitchen waste.
The invention also provides an organic liquid fertilizer, which comprises the fermentation broth.
To enhance the fertilizer efficiency of the organic liquid fertilizer, the person skilled in the art may choose to add other nutrient elements to the fermentation broth, which are commonly used in the art.
The raw materials used in the embodiments of the present invention, unless otherwise specified, may be obtained by purchasing the materials.
The enzymes used in the following examples and comparative examples of the present invention are commercially available, and the enzyme activities are shown in Table 1.
TABLE 1
| Enzyme variety | Enzyme activity (U/g) |
| Alkaline protease | 200000 |
| Papain | 500000 |
| Racemase enzyme | 3000 |
| Exo-beta-glucanase | 50000 |
| Endo-beta-glucanase | 40000 |
| Beta-glucosidase | 20000 |
| Polyphenol oxidase | 1000 |
| Pectase enzyme | 1000 |
The kitchen waste adopted in the following examples and comparative examples of the present invention is obtained by a waste incineration plant in the Songjiang area of Shanghai city.
The following examples and comparative examples of the present invention were conducted by adjusting the pH with hydrochloric acid or sodium hydroxide, as the case may be.
The cellulase used in the embodiment and the comparative example is specifically a mixture of exo-beta-glucanase, endo-beta-glucanase and beta-glucosidase in a mass ratio of 1:1:1.
The concentration of aerobic granular sludge used in the examples and comparative examples is 5000-8000mg/L, the grain size is 200-8 μm, the precipitation rate is about 10-42 m/h, and the specific oxygen consumption rate (SOUR) is 14.2-18.9 mg/g.h.
According to the kitchen waste original slurry disclosed by the embodiment and the comparative example, kitchen waste is sorted, crushed and ground to form the kitchen waste original slurry with the particle size smaller than 45 meshes; the dry matters in the original slurry of the kitchen waste specifically refer to organic matters such as protein, carbohydrate, fat and the like, wherein the content of the carbohydrate and the protein is more than 60% of the dry matters, and the content of the fat is about 30%.
The dry weight of the kitchen waste slurry in the embodiment and the comparative example of the invention specifically refers to the mass of dry matters in the original slurry of the kitchen waste.
The self-heating aerobic digestion time in the embodiment and the comparative example refers to the time required for the removal rate of organic matters in the original slurry of kitchen waste to reach 70%.
Example 1
(1) The mass concentration of dry matters in the original slurry of the kitchen waste is 10% through concentration (or dilution) treatment.
(2) Adding mother liquor of the additive into the kitchen waste original slurry, enabling the mass ratio of the dosage of the additive to dry matters in the kitchen waste original slurry to be 5:1000, then stirring for 2min under the condition of 120rmp, adjusting the rotating speed to 50rmp, and continuing stirring for 2h, so that the additive and the original slurry are fully mixed, and a mixture is obtained;
the preparation method of the mother liquor of the additive specifically comprises the following steps:
Weighing various enzymes and MnO 2 according to the following mass percentages: 10% of alkaline protease, 10% of papain, 10% of pectase, 15% of cellulase, 30% of polyphenol oxidase, 20% of racemase and 2% of MnO, and uniformly mixing to obtain an additive;
the above-mentioned additive was dissolved in distilled water to make its concentration be 50g/L, so as to obtain mother liquor of additive.
(3) And (3) inoculating aerobic granular sludge into the mixture, wherein the inoculum size of the aerobic granular sludge is 10% (v/v) (namely, the inoculum size accounts for 10% of the volume of the kitchen waste slurry), then adjusting the pH to 7.5, and performing self-heating aerobic digestion reaction to obtain fermentation liquor (organic liquid fertilizer) with the aeration size of 200ml of air/(min.kg dry weight of the kitchen waste slurry). The content of humus in the organic liquid fertilizer is 4.8%, and the self-warming aerobic digestion time is 12d.
Example 2
(1) The dry matter mass concentration in the original slurry of the kitchen waste is 12% through concentration (or dilution) treatment.
(2) Adding mother liquor of the additive into the kitchen waste original slurry, enabling the mass ratio of the additive to dry matters in the kitchen waste original slurry to be 1:1000, stirring for 1min under the condition of 200rmp, adjusting the rotating speed to 100rmp, and continuing stirring for 1h to enable the additive to be fully mixed with the original slurry to obtain a mixture;
wherein, the preparation of the mother liquor of the additive specifically comprises:
Weighing various enzymes and MnO 2 according to the following mass percentages: 7.5% of alkaline protease, 7.5% of papain, 15% of pectase, 10% of cellulase, 25% of polyphenol oxidase, 25% of racemase and 2% of MnO, and uniformly mixing to obtain an additive;
The additive was dissolved in distilled water to a concentration of 30g/L to obtain a mother liquor of the additive.
(3) Inoculating aerobic granular sludge into the mixture, wherein the inoculum size of the aerobic granular sludge is 10 percent (namely, the inoculum size accounts for 10 percent of the volume of kitchen waste slurry), then adjusting the pH value to 7.0, and performing self-heating aerobic digestion reaction to obtain fermentation liquor (organic liquid fertilizer) with the aeration size of 250ml of air/(min.kg dry weight of kitchen waste slurry); the content of humus in the organic liquid fertilizer is 3.2%, and the self-warming aerobic digestion time is 16d.
Example 3
(1) The dry matter mass concentration in the original slurry of the kitchen waste is 8% through concentration (or dilution) treatment.
(2) Adding mother liquor of the additive into the kitchen waste original slurry, enabling the mass ratio of the additive to dry matters in the kitchen waste original slurry to be 3:1000, stirring for 1.5min under the condition of 160rmp, adjusting the rotating speed to 75rmp, and continuously stirring for 1.5h, so that the additive and the original slurry are fully mixed, and a mixture is obtained;
wherein, the preparation of the mother liquor of the additive specifically comprises:
Weighing various enzymes and MnO 2 according to the following mass percentages: 5% of alkaline protease, 5% of papain, 12% of pectase, 20% of cellulase, 20% of polyphenol oxidase, 30% of racemase and 2% of MnO, and uniformly mixing to obtain an additive;
the additive was dissolved in distilled water to a concentration of 40g/L to obtain a mother liquor of the additive.
(3) Inoculating aerobic granular sludge into the mixture, wherein the inoculation amount of the aerobic granular sludge is 10 percent (namely, the inoculation amount of the aerobic granular sludge accounts for 10 percent of the volume of kitchen waste slurry), then adjusting the pH value to 8.0, and performing self-heating aerobic digestion reaction to obtain fermentation liquor (organic liquid fertilizer) with the aeration amount of 225ml of air/(min.kg dry weight of kitchen waste slurry); the content of humus in the organic liquid fertilizer is 4.1%, and the self-warming aerobic digestion time is 14d.
Comparative example 1
The difference from example 1 is only that the addition of racemase in the additive is omitted.
Results: the humus content in the fermentation liquor is only 2.8%, and the self-heating aerobic digestion time is 12d.
Comparative example 2
The only difference from example 2 is that the addition of protease, pectinase, cellulase and MnO 2 in the additive was omitted.
Results: the humus content in the fermentation liquor is only 2.1%, and the self-heating aerobic digestion time is 20d.
Comparative example 3
The difference from example 3 is only that the addition of polyphenol oxidase in the additive was omitted.
Results: the humus content in the fermentation liquor is only 2.5%, and the self-heating aerobic digestion time is 14d.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (9)
1. An additive is characterized in that the raw materials consist of 20-30% of racemase, 20-30% of polyphenol oxidase, 10-20% of protease, 10-15% of pectase, 10-20% of cellulase and 5-10% of MnO 2 according to mass percentage;
The protease is alkaline protease and papain; the mass ratio of the alkaline protease to the papain is 1:1; the cellulase is exo-beta-glucanase, endo-beta-glucanase and beta-glucosidase; the mass ratio of the exo-beta-glucanase to the endo-beta-glucanase to the beta-glucosidase is 1:1:1.
2. Use of the additive according to claim 1 in self-warming aerobic digestion of kitchen waste.
3. A method for enhancing self-warming aerobic digestion performance of kitchen waste, which is characterized in that the self-warming aerobic digestion performance of kitchen waste is enhanced by adding the additive of claim 1.
4. A method for enhancing self-warming aerobic digestion performance of kitchen waste according to claim 3, comprising the following steps:
Sorting, crushing and grinding kitchen waste into slurry;
Adding the additive of claim 1 into the slurry, uniformly mixing, and then inoculating aerobic granular sludge for self-warming aerobic digestion reaction; and (5) obtaining fermentation liquor after the reaction is finished.
5. The method for enhancing the self-warming aerobic digestion performance of kitchen waste according to claim 4, wherein the grain size of the slurry is less than 45 meshes; the concentration of dry matter in the slurry is 8-12wt%.
6. The method for enhancing the self-warming aerobic digestion performance of kitchen waste according to claim 4, wherein the mass ratio of the additive to dry matters in the slurry is 1-5:1000; the inoculation amount of the aerobic granular sludge is 5-10% (v/v) of the volume of the slurry.
7. The method for enhancing the self-warming aerobic digestion performance of kitchen waste according to claim 4, wherein the pH of the self-warming aerobic digestion reaction is 7-8, and the aeration amount is 200-250ml of air/(min.kg dry weight of kitchen waste slurry).
8. A fermentation broth prepared by the method for enhancing self-warming aerobic digestion performance of kitchen waste according to any one of claims 3-7.
9. An organic liquid fertilizer, characterized in that the raw material comprises the fermentation broth of claim 8.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101761321B1 (en) * | 2016-12-28 | 2017-07-26 | 주식회사 바이오클릭 | Enzyme composition for disposing of food waste |
| CN114958812A (en) * | 2022-06-27 | 2022-08-30 | 上海交通大学 | Method for promoting sludge feed conversion by using complex enzyme |
| CN115536445A (en) * | 2022-09-07 | 2022-12-30 | 江苏太古合一环境管理有限公司 | Method for preparing liquid organic base fertilizer from kitchen waste, liquid organic base fertilizer and liquid organic fertilizer |
| CN116159850A (en) * | 2022-11-25 | 2023-05-26 | 天津师范大学 | Method for preparing humic acid by catalyzing kitchen waste through manganese dioxide |
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| CN104151080B (en) * | 2014-08-26 | 2016-03-30 | 威海市世代海洋生物科技有限公司 | The preparation method of one plant nutrient liquor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101761321B1 (en) * | 2016-12-28 | 2017-07-26 | 주식회사 바이오클릭 | Enzyme composition for disposing of food waste |
| CN114958812A (en) * | 2022-06-27 | 2022-08-30 | 上海交通大学 | Method for promoting sludge feed conversion by using complex enzyme |
| CN115536445A (en) * | 2022-09-07 | 2022-12-30 | 江苏太古合一环境管理有限公司 | Method for preparing liquid organic base fertilizer from kitchen waste, liquid organic base fertilizer and liquid organic fertilizer |
| CN116159850A (en) * | 2022-11-25 | 2023-05-26 | 天津师范大学 | Method for preparing humic acid by catalyzing kitchen waste through manganese dioxide |
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