CN110759756A - Wet waste treatment method and system - Google Patents
Wet waste treatment method and system Download PDFInfo
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- CN110759756A CN110759756A CN201911009425.8A CN201911009425A CN110759756A CN 110759756 A CN110759756 A CN 110759756A CN 201911009425 A CN201911009425 A CN 201911009425A CN 110759756 A CN110759756 A CN 110759756A
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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
- C05F9/00—Fertilisers from household or town refuse
- C05F9/02—Apparatus for the manufacture
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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
- C05F9/00—Fertilisers from household or town refuse
- C05F9/04—Biological compost
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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
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Abstract
The embodiment of the specification discloses a wet waste treatment method and a system, wherein the wet waste treatment method comprises the steps of emulsifying wet waste and water into wet waste slurry; and carrying out hydrothermal oxidation reaction treatment on the wet garbage slurry to obtain an organic fertilizer, so that the wet garbage is converted into the organic fertilizer, and the garbage recycling treatment is realized.
Description
Technical Field
The specification relates to the technical field of garbage treatment, in particular to a wet garbage treatment method and system.
Background
The garbage is solid waste produced in daily life and production of human beings, has large discharge amount, complex and various components and pollution, needs harmless, resource, quantitative reduction and social treatment, and pollutes the environment, influences the environmental sanitation and wastes resources if the garbage cannot be properly treated.
At present, the main modes of garbage disposal are landfill disposal, composting and the like. The landfill treatment not only occupies land resources, but also produces leachate or harmful gas and the like to cause serious pollution to the atmosphere, soil and water sources. The garbage is sorted and classified by composting, the organic content of the garbage is required to be higher, and the composting cannot be reduced, so that a large amount of land still needs to be occupied.
In order to reduce the pollution influence of the garbage on the environment, a garbage classification policy is gradually implemented in China from 2019, wherein the treatment of wet garbage (including but not limited to kitchen garbage and kitchen garbage) is a very important ring in garbage classification treatment.
Disclosure of Invention
In view of this, the present specification provides a wet garbage disposal method and system.
The embodiment of the specification adopts the following technical scheme:
an embodiment of the present specification provides a wet waste treatment method, including:
emulsifying the wet waste and water into a wet waste slurry;
and carrying out hydrothermal oxidation reaction treatment on the wet garbage slurry to obtain the organic fertilizer.
Further, the embodiment of the specification also provides a wet garbage treatment method, wherein the wet garbage slurry is heated to a stable temperature of 160-230 ℃, and the hydrothermal oxidation reaction treatment is carried out on the wet garbage slurry to obtain the organic fertilizer.
Further, the embodiment of the specification also provides a wet garbage treatment method, wherein the wet garbage slurry is heated by a heating medium, and the stable temperature is 160-230 ℃.
Further, the embodiment of the specification also provides a wet garbage treatment method, wherein the pressure is kept at 1.8-2.3 MPa.g, and the hydrothermal oxidation reaction treatment is carried out on the wet garbage slurry to obtain the organic fertilizer.
Further, the embodiment of the specification also provides a method for treating wet garbage, wherein the hydrothermal oxidation reaction is finished after the preset temperature and pressure are maintained for 30-60 minutes.
Further, the embodiment of the specification also provides a wet garbage treatment method for carrying out solid-liquid separation treatment on the obtained organic fertilizer to obtain a liquid fertilizer and a solid organic fertilizer.
Further, the embodiment of the specification also provides a wet garbage treatment method, wherein before the obtained organic fertilizer is subjected to solid-liquid separation treatment, the pressure is released to 0.2-1.0 MPa.g.
Further, embodiments of the present specification also provide a wet waste treatment method in which a catalyst for promoting the hydrothermal oxidation reaction of a wet waste slurry is added during the emulsification of wet waste and water into the wet waste slurry, wherein the catalyst does not exceed 1% of the total weight or the total volume.
Further, embodiments of the present description also provide a wet waste treatment method that breaks up wet waste prior to emulsifying the wet waste and water into a wet waste slurry.
Further, embodiments of the present disclosure also provide a wet waste treatment method for sorting wet waste to remove metal and plastic products therein before emulsifying the wet waste and water into a wet waste slurry.
Further, embodiments of the present specification also provide a wet waste treatment method, including adding water to the wet waste, emulsifying the water and the wet waste to obtain the wet waste slurry, wherein the volume or weight ratio of the water to the wet waste is 1: 1.
an embodiment of the present specification further provides a wet waste disposal system, including:
a pulping module that emulsifies wet waste and water into wet waste slurry;
and the reaction module is used for carrying out hydrothermal oxidation reaction treatment on the wet garbage slurry to obtain the organic fertilizer.
Further, the embodiment of the specification also provides a wet garbage treatment system, wherein the reaction module heats the wet garbage slurry, the stable temperature is 160-230 ℃, and the hydrothermal oxidation reaction treatment is performed on the wet garbage slurry.
Further, the embodiment of the specification also provides a wet garbage treatment system, wherein the reaction module keeps the pressure at 1.8-2.3 MPa.g, and the hydrothermal oxidation reaction treatment is carried out on the wet garbage slurry.
Further, the embodiment of the specification also provides a wet garbage treatment system, wherein the hydrothermal oxidation reaction is finished after the reaction module maintains the temperature and the pressure for 30-60 minutes.
Further, the embodiment of the specification further provides a wet garbage treatment system, which further comprises a solid-liquid separation module, wherein the solid-liquid separation module is used for carrying out solid-liquid separation treatment on the obtained organic fertilizer to obtain a liquid fertilizer and a solid organic fertilizer.
Further, the embodiment of the specification also provides a wet garbage treatment system, which further comprises a pressure relief module, wherein the pressure relief module is used for relieving the pressure to 0.2-1.0 MPa.g before the obtained organic fertilizer is subjected to solid-liquid separation treatment.
Further, embodiments of the present description also provide a wet waste treatment system, further including a crushing module that crushes wet waste before emulsifying the wet waste and water into a wet waste slurry.
Further, embodiments of the present specification also provide a wet waste treatment system, where the pulping module adds water to the wet waste, emulsifies the water and the wet waste, where a volume or weight ratio of the water to the wet waste is 1: 1-1: 2.
The embodiment of the specification adopts at least one technical scheme which can achieve the following beneficial effects: after pulping wet garbage, reacting the wet garbage in high-pressure hot water by using a heating means to simulate geothermal reaction, and converting the wet garbage into organic fertilizer, thereby realizing the resource treatment of the garbage.
Drawings
The accompanying drawings, which are included to provide a further understanding of the specification and are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and together with the description serve to explain the specification and not to limit the specification in a non-limiting sense. In the drawings:
FIG. 1 is a flow chart of a wet waste treatment process according to one embodiment of the present disclosure.
FIG. 2 is a flow chart of a wet waste treatment process according to an embodiment of the present disclosure.
Fig. 3 is a block diagram of a wet garbage disposal system according to an embodiment of the present disclosure.
Fig. 4 is a block diagram of a wet garbage disposal system according to an embodiment of the present disclosure.
Fig. 5 is a schematic structural diagram of a wet waste disposal system according to an embodiment of the present disclosure.
Detailed Description
At present, the treatment mode of wet garbage mainly depends on biological fermentation (including anaerobic fermentation and aerobic fermentation) and incineration. The wet garbage is treated by biological fermentation, the treatment time is long, the occupied area is large, and the investment cost is high. The wet garbage has high water content, low heat value, high energy consumption during combustion and low utilization rate of organic matters, so the wet garbage is not beneficial to incineration. In addition, both of these methods produce solid waste and waste gases when used to treat wet waste, and require secondary treatment.
The embodiment of the specification provides a wet garbage treatment method and system, which are used for reacting wet garbage in high-pressure hot water by using a heating means after pulping the wet garbage so as to simulate geothermal reaction and convert the wet garbage into organic fertilizer, thereby realizing garbage recycling treatment.
In order to make the objects, technical solutions and advantages of the present disclosure more clear, the technical solutions of the present disclosure will be clearly and completely described below with reference to the specific embodiments of the present disclosure and the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present specification without any creative effort belong to the protection scope of the present specification.
The technical solutions provided by the embodiments of the present description are described in detail below with reference to the accompanying drawings.
Fig. 1 is a flow chart of a wet waste treatment method according to an embodiment of the present disclosure.
Step 110: the wet waste and water are emulsified into a wet waste slurry.
In this step, the wet waste and the water may be emulsified into a wet waste slurry using a pulping system such as an emulsification pump or a pulper as in the prior art.
The wet garbage refers to perishable garbage, also called kitchen garbage and organic garbage, and includes but is not limited to perishable biomass domestic wastes such as food material waste, leftovers, expired food, melon peel and fruit stones, green plants of flowers, traditional Chinese medicine dregs and the like. The wet garbage is mainly derived from garbage generated in activities such as daily life, food processing, diet service, unit catering and the like of residents, and comprises abandoned vegetable leaves, leftovers, fruit peels, eggshells, tea residues, bones, animal viscera, fish scales, leaves, weeds and the like.
In one embodiment of the present description, the weight or weight ratio of the wet waste and the water is 1: 1-1: 2, emulsifying the wet garbage and the water by using the existing pulping technology, so that the wet garbage is uniformly mixed with the water. Preferably, the wet waste, the water and the slurry of wet waste may be agitated in order to ensure that the wet waste and the water are mixed evenly.
In one embodiment of the present description, the wet waste is crushed before emulsification. The wet waste is crushed, for example, using a single or multi-stage crusher. Thus, the wet garbage is crushed into small particles, so that the wet garbage can be uniformly mixed with the water, and for example, the larger wet garbage with the same volume as banana peel can be crushed into small particles and then can be mixed with the water.
In an embodiment of the present specification, before emulsification, the wet waste is sorted to remove other types of waste such as metal, glass, or plastic products therein, and the wet waste is retained, so as to avoid that objects other than the wet waste affect the subsequent hydrothermal oxidation reaction, and also avoid that the metal and the plastic products affect the crushing effect, and reduce the damage to the crushing machine.
Step 120: and carrying out hydrothermal oxidation reaction treatment on the wet garbage slurry to obtain the organic fertilizer.
And (3) carrying out hydrothermal oxidation reaction on the wet garbage slurry, namely carrying out oxidative decomposition on organic matters in high-pressure hot water on the wet garbage slurry. Through hydrothermal oxidation reaction, wet garbage such as kitchen and kitchen waste can be quickly converted into organic fertilizer raw materials (humic acid), and the purpose of recycling the garbage is further achieved.
Generally, the hydrothermal oxidation reaction can be carried out in a water environment with a temperature of 100-400 ℃ and a high pressure, for example, the reaction temperature is stabilized at 160-230 ℃, for example, the reaction pressure is maintained at 1.8-2.3 MPa.
In one embodiment of the present description, the wet waste slurry is heated and the pressure increases with increasing temperature. For example, the temperature is heated to 160-230 ℃, the pressure is kept at 1.8-2.3 MPa.g, the hydrothermal oxidation reaction is carried out, and the temperature and pressure conditions are maintained for 30-60 minutes, and then the reaction is completed, so that the organic fertilizer is obtained.
Further, in order to promote the hydrothermal oxidation reaction, a catalyst for promoting the hydrothermal oxidation reaction of the wet waste slurry may be added to the wet waste treatment method. Specifically, in this example, the catalyst may be added during the emulsification step. That is, in the emulsification step, the water may be added to complete the emulsification step, and the catalyst may also be added to facilitate completion or accelerated occurrence of the subsequent reaction.
The catalyst is added in the process of emulsifying the wet garbage and the water into the wet garbage slurry, so that the tightness of a reaction environment can be ensured, and the reaction environment is prevented from being opened repeatedly. Preferably, the catalyst is added at this point no more than 1% of the total volume or total weight.
Further, in an embodiment of the present specification, the organic fertilizer obtained by the reaction includes two kinds of liquid fertilizer and solid fertilizer, and the wet garbage treatment method performs solid-liquid separation treatment on the organic fertilizer to obtain liquid fertilizer and solid fertilizer. For example, solid-liquid separation is performed by a filtering device such as a sieve or the like.
Preferably, in order to facilitate solid-liquid separation, the pressure in the reaction environment is decompressed, for example, from 1.8-2.3 MPa.g to 0.2-1.0 MPa.g, so as to perform filter pressing, facilitate liquid outflow and solid discharge.
Preferably, the hydrothermal oxidation reaction is performed in a closed environment so as to satisfy temperature and pressure conditions. For example, the hydrothermal oxidation reaction may be carried out in a reaction tank, and the pressure in the reaction tank may be controlled by a gas pressure valve.
Preferably, heating and temperature maintenance can be carried out through heat transfer media such as heat conduction oil/steam, safety is convenient to guarantee, the problem that direct heating causes the wall surface temperature of the reaction kettle to be too high, and the organic fertilizer is likely to coke is solved.
Thus, compared with incineration and landfill in the prior art, the wet garbage treatment method disclosed by the embodiment of the specification converts wet garbage into organic fertilizer by using hydrothermal oxidation reaction, occupies a small area, is wide in application range of wet garbage, is simple in flow, and does not need to remove oil at the front end. After the reaction is finished, the filtrate obtained by filtering contains organic matters and can be used as an organic fertilizer for greening or gardening. The filter cake obtained by filtering is rich in humic acid and can be used as an organic fertilizer for improving soil.
Fig. 2 is a flow chart of a wet garbage disposal method according to an embodiment of the present disclosure.
Step 210: and sorting the wet garbage, and removing metal and plastic products in the wet garbage.
Step 220: and crushing the wet garbage.
Step 230: and emulsifying the crushed wet garbage and water to obtain wet garbage slurry.
Step 240: and heating the wet garbage slurry by using a heating medium, stabilizing the temperature at 160-230 ℃, keeping the pressure at 1.8-2.3 MPa.g, maintaining the temperature and the pressure for 30-60 minutes, and performing hydrothermal oxidation reaction to obtain the organic fertilizer.
Step 250: adjusting the pressure to 0.2-1.0 MPa.g.
Step 260: and carrying out solid-liquid separation treatment on the obtained organic fertilizer to obtain a liquid fertilizer and a solid fertilizer.
Therefore, under the specified temperature and pressure, the wet garbage can be completely converted into the organic fertilizer, and meanwhile, no three wastes are generated in the production process, and secondary treatment is not needed. In addition, under the specified temperature and pressure, the wet garbage can be efficiently, trouble and time-saving converted into organic fertilizer. Meanwhile, the flow is simple, the front end does not need to be degreased, and only preliminary sorting is needed.
According to another aspect of the present specification, as shown in fig. 3, there is also provided a wet waste disposal system comprising:
a pulping module 10 for emulsifying wet waste and water into wet waste slurry;
and the reaction module 20 is used for carrying out hydrothermal oxidation reaction treatment on the wet garbage slurry to obtain the organic fertilizer.
Specifically, the pulping module 10 may be an emulsification pump or a pulping machine, and the wet garbage and the water are mixed into an emulsion by using a strong shearing force generated by high-speed rotation to achieve mixing, homogenization, dispersion, pulverization, and the like, so as to obtain the wet garbage slurry.
In one embodiment of the present description, the pulping module 10 adds the water to the wet waste, emulsifies the water and the wet waste, wherein the water and the wet waste are in a volume or weight ratio of 1: 1. preferably, the pulping module 10 adds a catalyst for promoting the hydrothermal oxidation reaction of the wet waste slurry during the emulsification process, wherein the catalyst does not exceed 1% of the total volume or the total weight.
The reaction module 20 heats and pressurizes the wet garbage slurry, and the wet garbage slurry is subjected to organic matter oxidative decomposition under hot water and high pressure to obtain the organic fertilizer. Specifically, the reaction module 20 may be a reaction kettle, and the wet garbage slurry is fed into the reaction kettle from a pulping tank through a slurry conveying pump for reaction.
For example, the reaction module 20 heats and stabilizes the temperature at 160-230 ℃ and maintains the pressure at 1.8-2.3 mpa.g, so that the hydrothermal oxidation reaction occurs, and the reaction is completed after the temperature and pressure conditions are maintained for 30-60 minutes, thereby obtaining the organic fertilizer. Therefore, the wet garbage can be completely converted into the organic fertilizer under the specified temperature and pressure, and meanwhile, no three wastes are generated in the production process, and secondary treatment is not needed.
Fig. 4 and 5 are a block diagram and a schematic diagram of a wet garbage disposal system according to an embodiment of the present disclosure. The wet waste treatment system includes a pulping module 10A for emulsification and a reaction module 20A for reaction.
Further, the wet garbage treatment system comprises a solid-liquid separation module 30A, which is used for carrying out solid-liquid separation treatment on the organic fertilizer to obtain liquid fertilizer and solid fertilizer. The filtrate obtained by filtering the organic fertilizer contains organic matters and can be used as the organic fertilizer for greening or gardening; the filter cake obtained by filtering is rich in humic acid and can be used as an organic fertilizer for improving soil.
Specifically, the solid-liquid separation module 30A may be implemented as a filter device such as a screen. For example, the filter screen may be installed at the bottom of the reaction kettle, so that after the reaction in the reaction kettle is finished, the organic fertilizer is filtered through the filter screen, the obtained liquid fertilizer flows out through the liquid fertilizer port at the bottom of the reaction kettle, and the remaining solid fertilizer flows out through the solid fertilizer port at the bottom of the reaction kettle.
Further, the wet waste disposal system comprises a crushing module 40A for crushing the wet waste before the pulping module 10A emulsifies the wet waste and the water into a wet waste slurry. In particular, the crushing module 40A may be implemented as various single-stage or multi-stage crushers, such as a crusher that performs splitting crushing on a material by using a toothed roller to rotate at a high speed. The wet waste is crushed into small particles by the crushing module 40A, facilitating uniform mixing with the water.
Therefore, the wet garbage treatment system has the advantages of small occupied area and wide application range of wet garbage. Meanwhile, the flow is simple, the front end does not need to be degreased, and only preliminary sorting is needed. After the reaction is finished, the filtrate obtained by filtering contains organic matters and can be used as an organic fertilizer for greening or gardening. The filter cake obtained by filtering is rich in humic acid and can be used as an organic fertilizer for improving soil.
Further, wet refuse treatment system can also include cooling module 50A, and it is obtained to filter liquid fertilizer carries out cooling treatment, thereby is convenient for the packing of liquid fertilizer.
The above description is only an example of the present specification, and is not intended to limit the present specification. Various modifications and alterations to this description will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present specification should be included in the scope of the claims of the present specification.
Claims (19)
1. A wet waste treatment process comprising:
emulsifying the wet waste and water into a wet waste slurry;
and carrying out hydrothermal oxidation reaction treatment on the wet garbage slurry to obtain the organic fertilizer.
2. The wet waste treatment process of claim 1, subjecting the wet waste slurry to a hydrothermal oxidation reaction to obtain an organic fertilizer, comprising:
and heating the wet garbage slurry, wherein the stable temperature is 160-230 ℃.
3. The wet waste treatment process of claim 2, heating the wet waste slurry to a stable temperature of 160-230 ℃, comprising:
and heating the wet garbage slurry through a heating medium, wherein the stable temperature is 160-230 ℃.
4. The wet waste treatment process of claim 3, wherein the wet waste slurry is subjected to a hydrothermal oxidation reaction to obtain an organic fertilizer, further comprising:
keeping the pressure at 1.8-2.3 MPa.
5. The wet waste treatment process of claim 4, wherein the wet waste slurry is subjected to a hydrothermal oxidation reaction to obtain an organic fertilizer, further comprising:
and maintaining the temperature and the pressure for 30-60 minutes.
6. The wet waste treatment process of claim 5, further comprising:
and carrying out solid-liquid separation treatment on the obtained organic fertilizer to obtain a liquid fertilizer and a solid fertilizer.
7. The wet waste treatment process of claim 6, further comprising, prior to subjecting the obtained organic fertilizer to solid-liquid separation treatment:
and (3) decompressing to 0.2-1.0 MPa.g.
8. The wet waste treatment process of claim 1, emulsifying wet waste and water into a wet waste slurry comprising:
adding a catalyst for promoting the hydrothermal oxidation reaction of the wet waste slurry, wherein the catalyst does not exceed 1% by total weight or volume.
9. The wet waste treatment process of claim 1, further comprising, prior to emulsifying wet waste and water into a wet waste slurry:
and (4) crushing the wet garbage.
10. The wet waste treatment process of claim 1, further comprising, prior to emulsifying wet waste and water into a wet waste slurry:
sorting the wet refuse and retaining the refuse belonging to the category of wet refuse.
11. The wet waste treatment process of claim 1, emulsifying wet waste and water into a wet waste slurry comprising:
adding the water to the wet waste, wherein the volume or weight ratio of the water to the wet waste is 1: 1-1: 2;
emulsifying the water and the wet waste to obtain the wet waste slurry.
12. A wet waste disposal system comprising:
a pulping module that emulsifies wet waste and water into wet waste slurry;
and the reaction module is used for carrying out hydrothermal oxidation reaction treatment on the wet garbage slurry to obtain the organic fertilizer.
13. The wet waste treatment system of claim 12, wherein the reaction module heats the wet waste slurry to a stable temperature of 160-230 ℃ and performs the hydrothermal oxidation reaction on the wet waste slurry.
14. The wet waste treatment system of claim 13, wherein the reaction module maintains a pressure of 1.8 to 2.3mpa.g and the wet waste slurry is subjected to the hydrothermal oxidation reaction.
15. The wet waste treatment system of claim 14, wherein the hydrothermal oxidation reaction is completed after the reaction module maintains the temperature and pressure for 30-60 minutes.
16. The wet waste treatment system of claim 15, further comprising a solid-liquid separation module for performing solid-liquid separation on the obtained organic fertilizer to obtain a liquid fertilizer and a solid fertilizer.
17. The wet garbage disposal system of claim 16, further comprising a pressure relief module for relieving pressure to 0.2 to 1.0mpa.g before the obtained organic fertilizer is subjected to solid-liquid separation treatment.
18. The wet waste management system of claim 12, further comprising a shredding module that shreds the wet waste prior to emulsifying the wet waste and the water into a wet waste slurry.
19. The wet waste treatment system of claim 12, wherein the pulping module adds the water to the wet waste, emulsifies the water and the wet waste, wherein a volume or weight ratio of the water to the wet waste is 1: 1-1: 2.
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Cited By (5)
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| CN111282974A (en) * | 2020-03-23 | 2020-06-16 | 深圳垚鑫淼环境科技有限公司 | Treatment method and treatment system for kitchen waste |
| CN111499454A (en) * | 2020-04-20 | 2020-08-07 | 上海交通大学 | Method for converting domestic wet garbage into humic acid organic fertilizer with high added value by hydrothermal catalysis method |
| CN112170459A (en) * | 2020-09-25 | 2021-01-05 | 苏州寰宇新博环保设备工程有限公司 | Organic material processing method and organic material processing device |
| CN113603515A (en) * | 2021-07-27 | 2021-11-05 | 中国环境科学研究院 | High-pressure hydrothermal pretreatment garbage compost and preparation method thereof |
| CN116444816A (en) * | 2023-06-19 | 2023-07-18 | 中国农业科学院农业环境与可持续发展研究所 | Method for converting biomass into humic acid through multistage pressure adjustment and hydrothermal method |
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| CN116444816B (en) * | 2023-06-19 | 2023-08-22 | 中国农业科学院农业环境与可持续发展研究所 | Method for converting biomass into humic acid through multistage pressure adjustment and hydrothermal method |
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Application publication date: 20200207 |