WO2010061338A1 - Methods of manufacturing fertilizer, and resulting fertilizer thereof - Google Patents
Methods of manufacturing fertilizer, and resulting fertilizer thereof Download PDFInfo
- Publication number
- WO2010061338A1 WO2010061338A1 PCT/IB2009/055328 IB2009055328W WO2010061338A1 WO 2010061338 A1 WO2010061338 A1 WO 2010061338A1 IB 2009055328 W IB2009055328 W IB 2009055328W WO 2010061338 A1 WO2010061338 A1 WO 2010061338A1
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- WIPO (PCT)
- Prior art keywords
- mixture
- filtrate
- fertilizer
- liquid
- medium
- Prior art date
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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
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/05—Treatments involving invertebrates, e.g. worms, flies or maggots
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/145—Feedstock the feedstock being materials of biological origin
-
- 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
Definitions
- This invention relates to methods of manufacturing fertilizer, more particularly from treated or untreated organic wastes.
- Organic wastes can be used as fertilizer.
- Organic wastes from domestic wastes also contain a lot of nutrients.
- this kind of wastes is difficult to be used as fertilizer.
- this invention provides a method of manufacturing a fertilizer including the steps of: a) mixing an organic medium with a liquid at ratio of 1 : 1 to 1 :5 parts of medium to the liquid, and then agitating for 30 to 90 minutes to form a mixture, wherein said organic medium is organic wastes after treatment with earthworms; b) filtering the mixture to form a filtrate containing 3% to 8% suspended solids; c) aerating the filtrate with agitation for 12 to 24 hours to form an oxygenated filtrate having 5% to 8% dissolved oxygen with respect to the volume of the filtrate; d) fermenting the oxygenated filtrate with aeration for 48 hours with continuous supply of oxygen to form said fertilizer.
- the liquid is water.
- the method of the current invention also includes the steps of: recycling the filtrate as the liquid for mixing with the medium; and repeating steps a) and b) for concentrating the mixture.
- the filtrate has a dissolved oxygen level from 6.5 to 9.5 ppm.
- the mixture is filtered through a 3 to 5mm screen while mixture is maintained to be agitated.
- the filtrate is aerated by air.
- the step of adding additives to the oxygenated filtrate before fermenting the oxygenated filtrate is also involved.
- the additives are selected from the group consisting of Ascophylum Nodosum Northern Hemisphere variety, Wildly Grown
- the additives is in an amount of 30Og of additives to IOOOL of the mixture.
- It is another aspect of the current invention to provide an alternative method of manufacturing a fertilizer including the steps of: a) mixing an organic medium with a liquid at ratio of 1 : 1 to 1 :5 parts of medium to the liquid, and then agitating for 30 to 90 minutes to form a mixture, wherein said organic medium is organic wastes after treatment with earthworms; b) aerating the mixture with agitation for 12 to 24 hours to form an oxygenated mixture having 5% to 8% dissolved oxygen with respect to the volume of the mixture; c) fermenting the oxygenated mixture with aeration for 48 hours with continuous supply of oxygen.
- It is yet another aspect of the current invention to provide a method of manufacturing a fertilizer including the steps of: a) mixing an organic medium with a liquid at ratio of 1 : 1 to 1 :5 parts of medium to the liquid, and then agitating for 30 to 90 minutes to form a mixture, wherein said organic medium is organic wastes after treatment with earthworms; b) filtering the mixture to form a filtrate containing 3% to 8% suspended solids; c) fermenting the filtrate with aeration for 48 hours with continuous supply of oxygen.
- an organic medium is first mixed with water at ratio of 1 :1 to 1 :5 parts of medium to water, and then agitate for 30 to 90 minutes to form a mixture.
- the organic medium is organic wastes after treatment with earthworms, in which the organic wastes are digested by the earthworms and contains aerobic micro organisms responsible for fermentation in the later stage of the process.
- the organic medium used in this case is the materials egested by earthworms.
- the organic medium can be in the form of solid or slurry, which may or may not be diluted with water. If the organic medium is first diluted with water, the concentration of the resulting organic medium after this dilution step is to be controlled by the operator based on the requirements of the resulting product.
- the mixture formed in the above step is then filtered leaving a filtrate having 3% to 8% suspended solids with respect to the volume of the filtrate. It was found that if the amount suspended solid is not in the range of 3 to 8%, undesirable putrefying effect will be resulted, causing foul odors and depletion of oxygen content in the filtrate. Further, the filtrate is preferred to contain a dissolved oxygen level from 6.5 to 9.5 ppm, which will be increased in the next step of the method of this invention.
- the filtrate is then aerated with agitation for 12 to 24 hours to form an oxygenated filtrate having 5% to 8% dissolved oxygen with respect to the volume of the filtrate.
- the aerating agent could be any suitable agent including air, oxygen, or other oxygen releasing compounds like magnesium peroxide.
- the choice of the aerating agent is not critical as long as this agent does not poison the filtrate and is commercially viable. In this respect, air is a useful choice.
- the oxygenated filtrate is then fermented for 48 hours to form the fertilizer. More or less time could be used depending on the operating environment and the quality of the materials used throughout the process. This oxygenation process "activates" the aerobic micro organisms in the filtrate.
- suitable additives could be added to to the oxygenated filtrate before the fermentation step.
- Suitable additives includes Ascophylum Nodosum Northern Hemisphere variety, Wildly Grown Sargassum Southern Hemisphere and Northern Hemisphere varieties, and BorreGro HA-I (which contains humic acid and fulvic acid).
- the amount of the additives is preferably in the range of 30Og of additives to IOOOL of the mixture.
- These additives can act as the food source for aerobic micro organisms during the fermentation process. Additionally, these additives themselves can act as useful elements for the resulting fertilizer to assist plant growth.
- CARBOHYDRATES - Alginic Acid, Mannitol, Laminarin NATURAL GROWTH PROMOTERS:- Cytokinins, Auxins, Gibberlins
- AMINO ACIDS - Alanine, Arginine, Aspartic Acid, Cystine, Glutamic Acid, Glycine, Histidine, Isoleucine, Leucine, Lysine, Methionine. Phenylanine, Proline, Serine, Threonine, Tryosine, Valine. Soluble seaweed powder is hygroscopic and should be kept in an air tight container at all times. Seaweed analysis can vary slightly throughout the year. Above analysis is a typical analysis.
- CHARACTERISTICS BorreGro HA-I is a modified potassium humate derived from leonardite made by a patented process (U.S. Patent #5,663,425)
- the filtrate after the filtration step could be used to increase the concentration of the organic materials in the first mixture.
- Table 1 below shows the analysis of the contents of the fertilizer of the current invention and the existing method.
- the fertilizer of the current invention may contain the additives
- the fertilizer also has the characteristics of improved phosphorous and nitrogen contents (more than 2 fold increase), which are important for fertilization.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Tropical Medicine & Parasitology (AREA)
- Engineering & Computer Science (AREA)
- Insects & Arthropods (AREA)
- Biotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
One existing method of manufacturing fertilizer from organic wastes involved collecting the egestion from earthworms and simply allowing the egestion to ferment. However, it was found that the resulting fertilizers are not satisfactory. New and improved methods are herein disclosed, in which additional filtering and/or aerating steps are involved. It was found that the fertilizers from the new methods have much improved phosphorous and nitrogen contents than those from the existing method.
Description
Methods of manufacturing fertilizer, and resulting fertilizer thereof
Field of the Invention
This invention relates to methods of manufacturing fertilizer, more particularly from treated or untreated organic wastes.
Background of the Invention
Organic wastes, particularly droppings from animals, can be used as fertilizer. Organic wastes from domestic wastes also contain a lot of nutrients. However, due to the complex contents of domestic wastes, this kind of wastes is difficult to be used as fertilizer.
These natural organic wastes suffer from various shortcomings including odor, inconsistency with respect to effectiveness, and storage. These have prohibited the widespread use of these wastes as fertilizer.
Existing method tried to resolve this issue by treating organic wastes with earthworms.
However, it was found that the fertilizers from this existing method, which involved collecting the egestion from earthworms and simply allowing the egestion to ferment, do not act as satisfactory fertilizer. Therefore, there is a need to find alternative solutions to enhance the effectiveness of fertilizers from treatment of organic wastes.
Objects of the Invention
Therefore, it is an object of this invention to provide methods for manufacturing fertilizer, such that the fertilizer could resolve at least some of the issues of existing organic wastes as mentioned above. It is an object of the current invention to at least provide the public with a useful choice.
Summary of the Invention
Accordingly, this invention provides a method of manufacturing a fertilizer including the steps of: a) mixing an organic medium with a liquid at ratio of 1 : 1 to 1 :5 parts of medium to the liquid, and then agitating for 30 to 90 minutes to form a mixture, wherein said organic medium is organic wastes after treatment with earthworms;
b) filtering the mixture to form a filtrate containing 3% to 8% suspended solids; c) aerating the filtrate with agitation for 12 to 24 hours to form an oxygenated filtrate having 5% to 8% dissolved oxygen with respect to the volume of the filtrate; d) fermenting the oxygenated filtrate with aeration for 48 hours with continuous supply of oxygen to form said fertilizer.
Preferably, the liquid is water.
Advantageously, the method of the current invention also includes the steps of: recycling the filtrate as the liquid for mixing with the medium; and repeating steps a) and b) for concentrating the mixture.
Preferably, the filtrate has a dissolved oxygen level from 6.5 to 9.5 ppm.
Preferably, the mixture is filtered through a 3 to 5mm screen while mixture is maintained to be agitated.
Alternatively, the filtrate is aerated by air.
Preferably, the step of adding additives to the oxygenated filtrate before fermenting the oxygenated filtrate is also involved. More preferably, the additives are selected from the group consisting of Ascophylum Nodosum Northern Hemisphere variety, Wildly Grown
Sargassum Southern Hemisphere and Northern Hemisphere varieties, and BorreGro HA-I. Additionally, the additives is in an amount of 30Og of additives to IOOOL of the mixture.
It is another aspect of the current invention to provide an alternative method of manufacturing a fertilizer including the steps of: a) mixing an organic medium with a liquid at ratio of 1 : 1 to 1 :5 parts of medium to the liquid, and then agitating for 30 to 90 minutes to form a mixture, wherein said organic medium is organic wastes after treatment with earthworms; b) aerating the mixture with agitation for 12 to 24 hours to form an oxygenated mixture having 5% to 8% dissolved oxygen with respect to the volume of the mixture;
c) fermenting the oxygenated mixture with aeration for 48 hours with continuous supply of oxygen.
It is yet another aspect of the current invention to provide a method of manufacturing a fertilizer including the steps of: a) mixing an organic medium with a liquid at ratio of 1 : 1 to 1 :5 parts of medium to the liquid, and then agitating for 30 to 90 minutes to form a mixture, wherein said organic medium is organic wastes after treatment with earthworms; b) filtering the mixture to form a filtrate containing 3% to 8% suspended solids; c) fermenting the filtrate with aeration for 48 hours with continuous supply of oxygen.
It is a further aspect of this invention to provide a fertilizer manufactured by the any one of the above methods.
Detailed Description of the Preferred Embodiments
This invention is now described by way of example in the following paragraphs.
Objects, features, and aspects of the present invention are disclosed in or are apparent from the following description. It is to be understood by one of ordinary skilled in the art that the present discussion is a description of exemplary embodiments only, and is not intended as limiting the broader aspects of the present invention, which broader aspects are embodied in the exemplary constructions.
In the method of this invention, an organic medium is first mixed with water at ratio of 1 :1 to 1 :5 parts of medium to water, and then agitate for 30 to 90 minutes to form a mixture. The organic medium is organic wastes after treatment with earthworms, in which the organic wastes are digested by the earthworms and contains aerobic micro organisms responsible for fermentation in the later stage of the process. The organic medium used in this case is the materials egested by earthworms. The organic medium can be in the form of solid or slurry, which may or may not be diluted with water. If the organic medium is first diluted with water, the concentration of the resulting organic medium after this dilution step is to be controlled by the operator based on the requirements of the resulting product.
The mixture formed in the above step is then filtered leaving a filtrate having 3% to 8% suspended solids with respect to the volume of the filtrate. It was found that if the amount suspended solid is not in the range of 3 to 8%, undesirable putrefying effect will be resulted, causing foul odors and depletion of oxygen content in the filtrate. Further, the filtrate is preferred to contain a dissolved oxygen level from 6.5 to 9.5 ppm, which will be increased in the next step of the method of this invention.
The filtrate is then aerated with agitation for 12 to 24 hours to form an oxygenated filtrate having 5% to 8% dissolved oxygen with respect to the volume of the filtrate. The aerating agent could be any suitable agent including air, oxygen, or other oxygen releasing compounds like magnesium peroxide. The choice of the aerating agent is not critical as long as this agent does not poison the filtrate and is commercially viable. In this respect, air is a useful choice.
The oxygenated filtrate is then fermented for 48 hours to form the fertilizer. More or less time could be used depending on the operating environment and the quality of the materials used throughout the process. This oxygenation process "activates" the aerobic micro organisms in the filtrate.
Optionally, suitable additives could be added to to the oxygenated filtrate before the fermentation step. Suitable additives includes Ascophylum Nodosum Northern Hemisphere variety, Wildly Grown Sargassum Southern Hemisphere and Northern Hemisphere varieties, and BorreGro HA-I (which contains humic acid and fulvic acid). The amount of the additives is preferably in the range of 30Og of additives to IOOOL of the mixture. These additives can act as the food source for aerobic micro organisms during the fermentation process. Additionally, these additives themselves can act as useful elements for the resulting fertilizer to assist plant growth.
Ascophylum Nodosum, Wildly Grown Sargassum, and BorreGro HA-I have the following specifications:
ASCOPHYLUM NODOSUM Northern Hemisphere variety
CHARACTERISTICS;
Appearance Dark brown/black
granule
O „d,our ne - Seaweed
Dry Matter 92 - 95% pH 9.5 - 10.5 @30%
., , , ., . 100% Soluble in bolυbiuty in water water
Organ ic Matter 50 - 55 %
ANALYSIS
Nitrogen (N) 1.00 - 1.50 %
Phosphorus (P) 0.4 - 0.7 %
Potassium (Kj 12.0 - i 5.0 %
Sulphur (S) 1.0 - 2.0 %
Calcium (Ca) 1,0 - 1.6 %
Magnesium (Mg) 0.25 - 0.55 0Zo
Sodium (Na) 2.5 - 3.5 %
Boron (B) 80 - 120 ppm
Copper (Cu) 20 - 40 ppm
Iodine (I) 500 - 600 ppm
Manganese (Mn) I5 - 30 ppm
Zinc ('Zn) 20 - 40 ppm lion (Fe) 120 - 200 ppm
CONTAINS:-
CARBOHYDRATES:- Alginic Acid, Mannitol, Laminarin NATURAL GROWTH PROMOTERS:- Cytokinins, Auxins, Gibberlins
AMINO ACIDS:- Alanine, Arginine, Aspartic Acid, Cystine, Glutamic Acid, Glycine, Histidine, Isoleucine, Leucine, Lysine, Methionine. Phenylanine, Proline, Serine, Threonine, Tryosine, Valine. Soluble seaweed powder is hygroscopic and should be kept in an air tight container at all times. Seaweed analysis can vary slightly throughout the year. Above analysis is a typical analysis.
WILDLY GROWN SARGASSUM Southern Hemisphere and Northern Hemisphere varieties
CHARACTERISTICS;
Type Gofar600-1
Dry Matter 98.0min Organic Matter % 45.0-55.0
Total Nitrogen 1.0%
Phosphorus(P2Os ) 6.0%
Potassium(K2θ) 18.0%
Alginic Acid 12% Amino Acid 2.0%
Fe 0.06%
Cu 0.003%
Mn 0.05%
Zn 0.05% pH 7-9
Specific Gravity 1:0.53-0.55
Solubility in water 100%
Amino Acids, Alginic Acid, Mannitol, Betaines, Auxins, Cytokinin & Gibberellin
BorreGro HA-I
CHARACTERISTICS:
BorreGro HA-I is a modified potassium humate derived from leonardite made by a patented process (U.S. Patent #5,663,425)
Typical Analysis:
9.0 pH 17.6% Soluble potash 6.8% Sulfur 52.5% Carbon 11.7% Oxygen 3% Hydrogen
70% Organic acids (BaCL2 Method) 50% derived from Humic acids, 20% from Fulvic acids
Although water could be used to mix with the organic medium to form the mixture, alternatively, the filtrate after the filtration step could be used to increase the concentration of the organic materials in the first mixture.
Table 1 below shows the analysis of the contents of the fertilizer of the current invention and the existing method.
Apparently, the fertilizer of the current invention may contain the additives
Ascophylum Nodosum, Wildly Grown Sargassum, and BorreGro HA-I mentioned above. The fertilizer also has the characteristics of improved phosphorous and nitrogen contents (more than 2 fold increase), which are important for fertilization.
While the preferred embodiment of the present invention has been described in detail by the examples, it is apparent that modifications and adaptations of the present invention will occur to those skilled in the art. Furthermore, the embodiments of the present invention shall not be interpreted to be restricted by the examples only. It is to be expressly understood, however, that such modifications and adaptations are within the scope of the present invention, as set forth in the following claims. For instance, features illustrated or described as part of one embodiment can be used on another embodiment to yield a still further embodiment. Thus, it is intended that the present invention cover such modifications and variations as come within the scope of the claims and their equivalents.
Notes: Analysis performed according to APHA, 1998, "Standard Methods for the Examination of Water &
Wastewater"
Table 1 Analysis of contents of fertilizer of the current invention and the existing method
Claims
1. A method of manufacturing a fertilizer including the steps of: a) mixing an organic medium with a liquid at ratio of 1 : 1 to 1 :5 parts of medium to the liquid, and then agitating for 30 to 90 minutes to form a mixture, wherein said organic medium is organic wastes after treatment with earthworms; b) filtering the mixture to form a filtrate containing 3% to 8% suspended solids; c) aerating the filtrate with agitation for 12 to 24 hours to form an oxygenated filtrate having 5% to 8% dissolved oxygen with respect to the volume of the filtrate; d) fermenting the oxygenated filtrate with aeration for 48 hours with continuous supply of oxygen to form said fertilizer.
2. The method of claim 1 , wherein the liquid is water.
3. The method of claim 1 further including the steps of:
- recycling the filtrate as the liquid for mixing with the medium; and
- repeating steps a) and b) for concentrating the mixture.
4. The method of claim 1, wherein the filtrate has a dissolved oxygen level from 6.5 to 9.5 ppm.
5. The method of claim 1, wherein the mixture is filtered through a 3 to 5mm screen while mixture is maintained to be agitated.
6. The method of claim 1 , wherein the filtrate is aerated by air.
7. The method of claim 1 further including the step of adding additives to the oxygenated filtrate before fermenting the oxygenated filtrate.
8. The method of claim 7, wherein the additives are selected from the group consisting of Ascophylum Nodosum Northern Hemisphere variety, Wildly Grown Sargassum Southern Hemisphere and Northern Hemisphere varieties, and BorreGro HA-I.
9. The method of claim 8, where the additives is in an amount of 30Og of additives to IOOOL of the mixture.
10. A method of manufacturing a fertilizer including the steps of: a) mixing an organic medium with a liquid at ratio of 1 : 1 to 1 :5 parts of medium to the liquid, and then agitating for 30 to 90 minutes to form a mixture, wherein said organic medium is organic wastes after treatment with earthworms; b) aerating the mixture with agitation for 12 to 24 hours to form an oxygenated mixture having 5% to 8% dissolved oxygen with respect to the volume of the mixture; c) fermenting the oxygenated mixture with aeration for 48 hours with continuous supply of oxygen to form said fertilizer.
11. A method of manufacturing a fertilizer including the steps of: a) mixing an organic medium with a liquid at ratio of 1 : 1 to 1 :5 parts of medium to the liquid, and then agitating for 30 to 90 minutes to form a mixture, wherein said organic medium is organic wastes after treatment with earthworms; b) filtering the mixture to form a filtrate containing 3% to 8% suspended solids; c) fermenting the filtrate with aeration for 48 hours with continuous supply of oxygen to form said fertilizer.
12. A fertilizer manufactured by the method of any one of the preceding claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HK08112999.8 | 2008-11-27 | ||
| HK08112999A HK1121909A2 (en) | 2008-11-27 | 2008-11-27 | Methods of manufacturing fertilizer, and resulting fertilizer thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010061338A1 true WO2010061338A1 (en) | 2010-06-03 |
Family
ID=40620838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2009/055328 WO2010061338A1 (en) | 2008-11-27 | 2009-11-25 | Methods of manufacturing fertilizer, and resulting fertilizer thereof |
Country Status (2)
| Country | Link |
|---|---|
| HK (1) | HK1121909A2 (en) |
| WO (1) | WO2010061338A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107840753A (en) * | 2017-10-27 | 2018-03-27 | 河南神润农业科技有限公司 | A kind of biological compound organic fertilizer and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2107054C1 (en) * | 1997-06-27 | 1998-03-20 | Вячеслав Николаевич Каржеманов | Method of producing compound fertilizers |
| CN100999419A (en) * | 2006-12-20 | 2007-07-18 | 广州市慧堡环境科技有限公司 | Method of ecological treating organic garbage using earthworm and its organic fertilizer production equipment |
-
2008
- 2008-11-27 HK HK08112999A patent/HK1121909A2/en not_active IP Right Cessation
-
2009
- 2009-11-25 WO PCT/IB2009/055328 patent/WO2010061338A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2107054C1 (en) * | 1997-06-27 | 1998-03-20 | Вячеслав Николаевич Каржеманов | Method of producing compound fertilizers |
| CN100999419A (en) * | 2006-12-20 | 2007-07-18 | 广州市慧堡环境科技有限公司 | Method of ecological treating organic garbage using earthworm and its organic fertilizer production equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107840753A (en) * | 2017-10-27 | 2018-03-27 | 河南神润农业科技有限公司 | A kind of biological compound organic fertilizer and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1121909A2 (en) | 2009-04-30 |
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