CN111892441B - Production method of organic fertilizer with formaldehyde adsorption function - Google Patents

Production method of organic fertilizer with formaldehyde adsorption function Download PDF

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CN111892441B
CN111892441B CN202010816172.1A CN202010816172A CN111892441B CN 111892441 B CN111892441 B CN 111892441B CN 202010816172 A CN202010816172 A CN 202010816172A CN 111892441 B CN111892441 B CN 111892441B
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oxygen
organic fertilizer
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CN111892441A (en
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王明
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Shandong Manshenghuo Agricultural Technology Co ltd
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    • 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
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D9/00—Other inorganic fertilisers
    • 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
    • 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
    • C05F17/90—Apparatus therefor
    • C05F17/964—Constructional parts, e.g. floors, covers or doors
    • 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
    • C05F17/90—Apparatus therefor
    • C05F17/964—Constructional parts, e.g. floors, covers or doors
    • C05F17/971—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material
    • C05F17/979—Constructional parts, e.g. floors, covers or doors for feeding or discharging materials to be treated; for feeding or discharging other material the other material being gaseous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
    • 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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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Molecular Biology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Pest Control & Pesticides (AREA)
  • Fertilizers (AREA)

Abstract

A production method of an organic fertilizer with a formaldehyde adsorption function comprises the steps of mixing raw materials and then fermenting, wherein fermentation is firstly carried out in an aerobic state, a fermentation product is obtained after fermentation is finished, and then the fermentation product is subjected to anaerobic high-temperature treatment to obtain the organic fertilizer. The synthesis of this application fertilizer includes two steps, and a step is the fermentation, is in order to carry out fermentation treatment with each material and obtain the nutrient substance that is suitable for flowers and plants to use, removes all kinds of easy drift materials simultaneously, then carries out the high temperature treatment of short time again, and the purpose is the solidified matter surface, strengthens its self hydrophobicity for in the use, although humidity keeps in higher level for a long time, can also possess certain formaldehyde removing ability.

Description

Production method of organic fertilizer with formaldehyde adsorption function
Technical Field
The application relates to a production method of an organic fertilizer with a formaldehyde adsorption function.
Background
With the improvement of the quality of life, the phenomenon that the indoor environment quality is improved by growing flowers and grass indoors is more and more. As the planting is carried out indoors, the potted plant mode can only be adopted generally. The pot culture mode limits the nutrition range of the flowers and the plants, and the mode of adding fertilizers is generally adopted to provide the fertilizers for the flowers and the plants. As the topdressing is carried out indoors during the planting of flowers and plants, the bottom line requirement is that no peculiar smell or other harmful gases overflow so as not to pollute the indoor space, at least the indoor air is not polluted. It should be noted that most of the reason for indoor planting of flowers and plants is to perform air purification, such as the task of planting scindapsus aureus. Therefore, how to carry out functional treatment on the organic fertilizer is very important.
Disclosure of Invention
In order to solve the problems, the application provides a production method of an organic fertilizer with a formaldehyde adsorption function, which comprises the steps of mixing raw materials and then fermenting, wherein the fermentation is firstly carried out in an aerobic state, a fermentation product is obtained after the fermentation is finished, and then the fermentation product is subjected to anaerobic high-temperature treatment to obtain the organic fertilizer. The synthesis of this application fertilizer includes two steps, and a step is the fermentation, is in order to carry out fermentation treatment with each material and obtain the nutrient substance that is suitable for flowers and plants to use, removes all kinds of easy drift materials simultaneously, then carries out the high temperature treatment of short time again, and the purpose is the solidified matter surface, strengthens its self hydrophobicity for in the use, although humidity keeps in higher level for a long time, can also possess certain formaldehyde removing ability.
Preferably, oxygen-containing gas is continuously introduced into the fermentation under the stirring state, and the volume fraction of oxygen in the oxygen-containing gas is not lower than 20%; the oxygen-containing gas is air.
Preferably, the oxygen-free high-temperature treatment is carried out under a nitrogen atmosphere, the temperature of the nitrogen atmosphere is 300-450 ℃, and the time of the oxygen-free high-temperature treatment is 30-60s.
Preferably, the raw materials comprise the following substances in parts by mass: coconut chaff: 20-30 parts of a solvent; peat: 40-60 parts; biochar: 5-10 parts; and (3) biological fertilizer: 10-20 parts.
Preferably, the feed also comprises the following raw materials in parts by weight: wood chip: 5-10 parts. This application adopts the coconut husk that the cooperation set up, the peat, the biochar, bio-fertilizer and saw-dust, all adopt natural material to carry out fermentation treatment, make can not bring other pollutions in the use, and in addition on the one hand, adopt after the formula of this application and the processing method, fertilizer itself has better porosity, the effect of formaldehyde is detached in better assistance has, the carrier of adsorbing formaldehyde can also be absorbed by the flowers and plants as the nutrient, promote the energy supply effect of fertilizer to the flowers and plants.
Preferably, the carbonization treatment is carried out under the environment of isolating oxygen to obtain the biochar.
Preferably, the carbonization treatment is carried out under the condition of non-oxidizing gas atmosphere, the temperature is raised to 400-450 ℃ from room temperature at the speed of 1-3 ℃/min, then the temperature is maintained for 100-120min, and then the temperature is reduced to room temperature, thus obtaining the biochar.
Preferably, the fermentation and anaerobic high-temperature treatment processes are carried out in a composting device, the composting device comprises a cavity, the bottom of the cavity is provided with a ventilation component, the top of the cavity is provided with an air guide component, a circulating belt for containing organic fertilizer is arranged above the ventilation component, and a stirring component is arranged between the circulating belt and the air guide component; the stirring assembly comprises a guide rack, a stirring assembly is arranged on the guide rack, the stirring assembly comprises a transverse moving mechanism which is matched with the guide rack, the stirring assembly is arranged under the transverse moving mechanism, the stirring assembly comprises a stirring motor, a stirring shaft is arranged under the stirring motor in a power mode, a main helical blade which is arranged in a surrounding mode and auxiliary helical blades which are arranged in a crossed mode are arranged outside the stirring shaft, and the height of the main helical blade is 2-5 times that of the auxiliary helical blades.
Preferably, the number of the guide racks is two, the two guide racks are respectively and fixedly arranged on two sides of the cavity, the transverse moving mechanism comprises a transverse moving motor, a driving shaft of the transverse moving motor is connected with a speed reducer, two transverse moving shafts extend out of the speed reducer, and a moving gear meshed with the guide racks is arranged on each transverse moving shaft; the ventilation assembly comprises a ventilation pipe arranged below the circulating belt, a plurality of through holes are formed in the ventilation pipe, and the ventilation pipe is communicated with a fan; the air guide assembly comprises a plurality of air guide pipes arranged above the cavity, and the air guide pipes are connected with an exhaust fan; the conveying belt comprises rotating shafts arranged at two ends of the cavity, the rotating shafts are sleeved with the conveying belt, a plurality of air holes are formed in the conveying belt, and isolating nets are arranged on the air holes; the conveyer belt is provided with a plurality of driven wheels, and the driven wheels are abutted to the upper part of the conveyer belt. This application adopts the air guide subassembly and the subassembly of ventilating that the cooperation set up to utilize the stirring subassembly to accomplish stirring and the reciprocal of circulation area and rock, make can accomplish inside operations such as roll when the stirring, thereby the reinforcing mixes the effect, reduces the compost time, can reduce half curing time basically, also can avoid the bottom not to take place the bad effect of curing.
Preferably, a compost outlet is formed in one side of the cavity, a compost inlet is formed in the other side of the cavity opposite to the compost outlet, and closed doors are respectively arranged on the compost outlet and the compost inlet; a bottom blade is arranged below the stirring shaft, the bottom of the bottom blade is parallel to the circulating belt, and the distance between the bottom blade and the circulating belt is not more than 2cm; the bottom blade comprises a first protruding blade arranged on one side and a second protruding blade arranged on the other side opposite to the first protruding blade, and the height of the first protruding blade is larger than that of the second protruding blade. At least one of the rotating shafts is set as an active rotating shaft, so that the left-right shaking function can be achieved, the internal mixing effect is enhanced, the composting efficiency is improved, and the internal gas is favorably discharged; and adopt asymmetric bottom blade for when the stirring, strengthen its disturbance to bottom fertilizer, strengthen bottom stirring effect.
This application can bring following beneficial effect:
1. the coconut chaff, the peat, the biochar, the bio-fertilizer and the sawdust which are arranged in a matched mode are adopted, and natural materials are adopted for fermentation treatment, so that other pollution cannot be brought in the using process;
2. the synthesis of the organic fertilizer comprises two steps, wherein one step is fermentation, so that each substance is fermented to obtain nutrient substances suitable for flowers and plants, various substances easy to float are removed, and then high-temperature treatment is carried out for a short time, so that the surface of the substance is solidified, the hydrophobicity of the substance is enhanced, and the substance can have certain formaldehyde removal capability although the humidity is kept at a high level for a long time in the using process;
3. the air guide assembly and the ventilation assembly are arranged in a matched mode, stirring and reciprocating shaking of the circulating belt are completed by the aid of the stirring assembly, so that internal rolling and other operations can be completed while stirring, mixing effect is enhanced, composting time is shortened, half curing time can be shortened basically, and bad effect that curing does not occur at the bottom can be avoided;
4. at least one of the rotating shafts is set as an active rotating shaft, so that the left-right shaking function can be achieved, the internal mixing effect is enhanced, the composting efficiency is improved, and the internal gas is favorably discharged; and adopt asymmetric bottom blade for when the stirring, strengthen its disturbance to bottom fertilizer, strengthen bottom stirring effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic structural diagram of the present application;
FIG. 2 is a schematic view of a portion of the rotating shaft;
fig. 3 is a schematic structural diagram of a power part of the stirring assembly.
Detailed Description
In order to clearly explain the technical features of the present invention, the present application will be explained in detail by the following embodiments and the accompanying drawings.
As shown in the drawings, the following detailed description is given by way of example in order to more clearly explain the overall concept of the present application.
In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.
All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In a first embodiment, as shown in fig. 1-3, an organic fertilizer composting device with mixing function comprises a cavity 1, an air vent component 2 is arranged at the bottom of the cavity 1, an air guide component 3 is arranged at the top of the cavity 1, a circulating belt 4 for containing organic fertilizer is arranged above the air vent component 2, and a stirring component 6 is arranged between the circulating belt 4 and the air guide component 3; stirring subassembly 6 includes guide rack 5, is equipped with a stirring subassembly 6 on guide rack 5, stirring subassembly 6 includes one and the lateral shifting mechanism that 5 cooperations of guide rack set up, is equipped with stirring subassembly 6 under lateral shifting mechanism, stirring subassembly 6 includes agitator motor 7, and power is equipped with a (mixing) shaft 8 under agitator motor 7, is equipped with one outside (mixing) shaft 8 and encircles the main helical blade 9 that sets up and the supplementary helical blade 10 of crossing arrangement with main helical blade 9, main helical blade 9 highly is 2-5 times of supplementary helical blade 10. The two guide racks 5 are respectively and fixedly arranged on two sides of the cavity 1, the transverse moving mechanism comprises a transverse moving motor 11, a driving shaft of the transverse moving motor 11 is connected with a speed reducer 12, two transverse moving shafts extend out of the speed reducer 12, and a moving gear 13 meshed with the guide racks 5 is arranged on each transverse moving shaft. The ventilation assembly 2 comprises a ventilation pipe 14 arranged below the circulating belt 4, a plurality of through holes are formed in the ventilation pipe 14, and the ventilation pipe 14 is communicated with a fan 24; the air guide assembly comprises a plurality of air guide pipes 15 arranged above the cavity, and the air guide pipes 15 are connected with a row of fans 16. The conveyer belt is including establishing the pivot 17 at cavity 1 both ends, and the cover is equipped with conveyer belt 18 on pivot 17, is equipped with a plurality of air vents on conveyer belt 18, be equipped with at a distance from the net on the air vent. The conveyor belt 18 is provided with a plurality of driven wheels 19, and the driven wheels 19 are arranged in contact with the upper part of the conveyor belt 18. A compost outlet 20 is arranged at one side of the cavity 1, a compost inlet 21 is arranged at the other side opposite to the compost outlet 20, and a closing door is arranged at each of the compost outlet 20 and the compost inlet 21. A bottom blade is arranged below the stirring shaft 8, the bottom of the bottom blade is parallel to the circulating belt 4, and the distance between the bottom blade and the circulating belt 4 is not more than 2cm. The bottom blade comprises a first protruding blade 22 arranged on one side and a second protruding blade 23 arranged on the other side opposite to the first protruding blade 22, and the height of the first protruding blade 22 is larger than that of the second protruding blade 23.
When the fertilizer curing device is used, fertilizer is placed in the cavity 1, the rotating shaft 17 is used for rotating in a reciprocating mode to drive the conveying belt 18, the ventilating assembly 2 is used for providing air, the air guide assembly 3 is used for guiding out the air, meanwhile, the transverse moving motor 11 drives the moving gear 13 to reciprocate on the guide rack 5, the stirring motor 7 is used for driving the stirring shaft 8 to stir, and under the condition, sufficient supply of oxygen can be guaranteed, so that the whole curing process is improved.
In a second example, the production of organic fertilizer was carried out according to the following steps:
s1, preparing materials:
for the biochar, the biochar is obtained by processing wheat straws in a heating mode and is processed in the following mode: cutting wheat straw into 5-20cm sections, and carbonizing under the oxygen-isolated environment to obtain charcoal. Carbonizing, heating under non-oxidizing atmosphere, heating from room temperature to 400-450 deg.C at a speed of 1-3 deg.C/min, maintaining for 100-120min, and cooling to room temperature to obtain charcoal;
as for the biological fertilizer, the chicken manure is adopted, and the water content of the chicken manure is 10-15%;
the wood chips are poplar wood chips produced by adopting wood shavings.
S2, mixing materials:
mixing coconut coir, peat, biochar prepared by S1, bio-fertilizer and wood chips, stirring for crushing, and putting into the device of the first embodiment after completely mixing; as shown in table 1.
Table 1:
serial number Coconut husk (kg) Peat (kg) Biochar (kg) Biological fertilizer (kg) Wood flour (kg)
1 20 40 5 10 5
2 30 60 10 20 10
3 25 50 8 15 8
4 25 50 8 15 8
5 25 50 8, activated carbon 15 8
6 25, wheat bran 50 8 15 8
7 25 50 8 15 0
8 25 50 8 15 8
S3, fermentation control:
comprises two steps, one is aerobic fermentation, air is provided by the aeration component 2 in the aerobic fermentation process, air is led out by the air guide component 3, the temperature is controlled by controlling the air temperature, the air temperature is controlled to be about 25 ℃, and the air flow is 0.01m 3 /(m 2 Min) for 7 days;
then carrying out oxygen-free high-temperature treatment: at the moment, high-temperature nitrogen is provided by the ventilating component 2, the high-temperature nitrogen is led out by the gas guide component 3, the temperature of the nitrogen atmosphere is 300-450 ℃, the processing time is 30-60s, and the flow rate of the high-temperature nitrogen is 0.8m 3 /(m 2 Flow area min);
s4, measuring properties:
build a 1m 3 The test room is provided with a formaldehyde concentration tester, 50g of the fertilizer obtained in the step S3 is put into a flowerpot with the property of a pottery pot, 20g of water is poured into the flowerpot partially, standing is carried out for 48 hours, and the formaldehyde concentration change before and after the test is carried out. The fermentation process and formaldehyde concentration are shown in table 2.
Table 2:
Figure BDA0002632774880000081
the above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the present application pertains. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (1)

1. A production method of an organic fertilizer with formaldehyde adsorption function comprises the steps of mixing raw materials and then fermenting, and is characterized in that: the fermentation is firstly carried out in an aerobic state, a fermentation product is obtained after the fermentation is finished, and then the fermentation product is subjected to anaerobic high-temperature treatment to obtain an organic fertilizer;
the raw materials comprise the following substances in parts by mass: coconut husk: 20-30 parts of a solvent; peat: 40-60 parts; biochar: 5-10 parts; and (3) biological fertilizer: 10-20 parts; wood chip: 5-10 parts;
the biological fertilizer is chicken manure, and the water content of the chicken manure is 10-15%;
the biochar is prepared by the following method: cutting wheat straw into 5-20cm sections, and then carrying out carbonization treatment in an oxygen-isolated environment to obtain charcoal;
the carbonization treatment is carried out under the condition of non-oxidizing gas atmosphere, heating is carried out, the temperature is increased to 400-450 ℃ from room temperature at the speed of 1-3 ℃/min, then the temperature is maintained for 100-120min, and then the temperature is reduced to room temperature, thus obtaining the biochar;
continuously introducing oxygen-containing gas into the fermentation under the stirring state, wherein the oxygen-containing gas is air;
the oxygen-free high-temperature treatment is carried out under a nitrogen atmosphere, the temperature of the nitrogen atmosphere is 300-450 ℃, and the time of the oxygen-free high-temperature treatment is 30-60s.
CN202010816172.1A 2020-08-14 2020-08-14 Production method of organic fertilizer with formaldehyde adsorption function Active CN111892441B (en)

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TWI274049B (en) * 2006-01-23 2007-02-21 Nat Kaohsiung First University A mechanized tunnel-type processing equipment for organic compost
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Denomination of invention: A production method of organic fertilizer with formaldehyde adsorption function

Granted publication date: 20221227

Pledgee: Jinan Luokou sub branch of Qilu Bank Co.,Ltd.

Pledgor: SHANDONG MANSHENGHUO AGRICULTURAL TECHNOLOGY Co.,Ltd.

Registration number: Y2024980022931