CN111792971A - Organic microbial fertilizer harmless to environment - Google Patents
Organic microbial fertilizer harmless to environment Download PDFInfo
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- CN111792971A CN111792971A CN202010713681.1A CN202010713681A CN111792971A CN 111792971 A CN111792971 A CN 111792971A CN 202010713681 A CN202010713681 A CN 202010713681A CN 111792971 A CN111792971 A CN 111792971A
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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
- C05G3/80—Soil conditioners
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses an organic microbial fertilizer harmless to the environment, which comprises the following components of a compound microbial agent, straws, sludge, human and animal excreta, calcium oxide, ammonium polyphosphate, urea, calcium superphosphate and water. In order to reduce the heavy metal content in the fertilizer, the invention adopts thiobacillus ferrooxidans to acclimate the sludge and combines bioleaching to obtain sludge sediment with very low heavy metal content; the harmful viruses in the fertilizer can be effectively killed by adding the calcium oxide; the organic matters in the fertilizer are converted by the aerobic denitrifying bacteria agent, so that the organic pollutants in the fertilizer are reduced and the nitrogen fertilizer content of the fertilizer is improved. The organic microbial fertilizer disclosed by the invention is not only harmless to the environment, but also can effectively treat organic wastes such as sludge and straws which are unfavorable to the environment, and is environment-friendly and safe.
Description
Technical Field
The invention relates to the technical field of microbial fertilizers, in particular to an organic microbial fertilizer harmless to the environment.
Background
Microbial fertilizers are of many types, and microbial fertilizer products are generally divided into two main categories: one is a microbial fertilizer in the narrow sense, which means that the supply of plant nutrient elements is increased through the life activities of microorganisms, and comprises the steps of increasing the total supply of the plant nutrient elements in soil and production environment, so that the nutrient condition of the plants is improved, and the yield is increased, wherein the representative variety of the microbial fertilizer is rhizobium fertilizer; the other is a broad-sense microbial fertilizer, which means that the supply of plant nutrient elements can be improved through the life activities of microorganisms in the microbial fertilizer, plant growth hormone can be generated, the absorption and utilization of the nutrient elements by plants are promoted or the pathogenic effect of certain pathogenic microorganisms is antagonized, the crop diseases and insect pests are reduced, and the crop yield is increased.
In the existing organic microbial fertilizer, in order to reduce the cost, the main raw materials of the fertilizer are organic matters such as sludge, human and animal excreta and the like, but the organic matters contain a large amount of germs, organic pollutants and heavy metals, so that the research on the organic microbial fertilizer which is harmless to the environment is necessary.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides an organic microbial fertilizer harmless to the environment.
The technical scheme of the invention is as follows:
an organic microbial fertilizer without environmental pollution is prepared from composite microbial bacterial agent, straw, sludge, human and animal excrement, calcium oxide, ammonium polyphosphate, urea, calcium superphosphate and water.
Preferably, the organic microbial fertilizer comprises the following components in parts by weight: 20-50 parts of compound microbial agent, 80-120 parts of straw, 60-80 parts of sludge, 30-50 parts of human and animal manure, 30-55 parts of calcium oxide, 10-40 parts of ammonium polyphosphate, 10-20 parts of urea, 15-40 parts of calcium superphosphate and 300 parts of water.
Preferably, in the compound microbial agent, the addition amount of the functional bacteria is not less than 1 hundred million/g.
Preferably, the compound microbial agent consists of an aerobic denitrifying bacterial agent, thiobacillus ferrooxidans, a bacillus subtilis agent, a bacillus licheniformis agent, a bacillus laterosporus agent and a bacillus megaterium agent.
Preferably, the sludge is pond sludge or municipal sludge with the water content of 30-50%.
Preferably, the preparation method of the soybean-applicable microbial fertilizer for quickly reducing the salt and improving the alkali in saline-alkali soil comprises the following steps:
A. adding the compound microbial agent into the sludge, introducing nitrogen and carrying out enrichment culture until the pH value is reduced to 3.5-4.0 to obtain domesticated sludge;
B. inoculating domesticated sludge into raw sludge according to volume ratio of 5-12%, adding 8-12g/L Na2S2O3Adjusting the initial pH value to 5-7 as a substrate, leaching and culturing at 20-30 ℃ for 16-24h, and separating and leaching heavy metals in raw sludge into a water phase;
C. sludge precipitation: precipitating the leached sludge to obtain sludge with low heavy metal content and sewage with high heavy metal content;
D. putting the sludge with low heavy metal content and other raw materials into a composting fermentation mixer, and stirring and mixing; controlling the speed of a rotor at 50-65rpm, stirring and fermenting for 2-3 days under an aerobic condition, and controlling the temperature to be lower than 60 ℃;
E. adjusting the speed of the rotor to 25-30rpm, continuously stirring and fermenting for 8-10 days, and cooling to room temperature.
Preferably, in the step C, the wastewater with high heavy metal content is enriched, and then heavy metal extraction is performed.
The invention has the advantages that: the organic microbial fertilizer harmless to the environment comprises the following components of a compound microbial agent, straws, sludge, human and animal excreta, calcium oxide, ammonium polyphosphate, urea, calcium superphosphate and water. In order to reduce the heavy metal content in the fertilizer, the invention adopts thiobacillus ferrooxidans to acclimate the sludge and combines bioleaching to obtain sludge sediment with very low heavy metal content; the harmful viruses in the fertilizer can be effectively killed by adding the calcium oxide; the organic matters in the fertilizer are converted by the aerobic denitrifying bacteria agent, so that the organic pollutants in the fertilizer are reduced and the nitrogen fertilizer content of the fertilizer is improved.
Detailed Description
Example 1
An organic microbial fertilizer harmless to the environment comprises the following components in parts by weight: 35 parts of compound microbial agent, 100 parts of straw, 75 parts of sludge, 35 parts of human and animal manure, 45 parts of calcium oxide, 20 parts of ammonium polyphosphate, 15 parts of urea, 18 parts of calcium superphosphate and 300 parts of water.
In the compound microbial agent, the addition amount of functional bacteria is not less than 1 hundred million/g.
The compound microbial agent consists of an aerobic denitrifying bacterial agent, thiobacillus ferrooxidans, a bacillus subtilis bacterial agent, a bacillus licheniformis bacterial agent, a bacillus laterosporus bacterial agent and a bacillus megaterium bacterial agent.
The sludge is pond sludge or municipal sludge with the water content of 38%.
The preparation method of the microbial fertilizer suitable for quickly reducing the salt and changing the alkali of the saline-alkali soil of the soybeans comprises the following steps:
A. adding the compound microbial agent into the sludge, introducing nitrogen and carrying out enrichment culture until the pH value is reduced to 3.8 to obtain domesticated sludge;
B. inoculating the acclimatized sludge into raw sludge according to the volume ratio of 8%, and adding 10g/L Na2S2O3Adjusting the initial pH value to 6.5 as a substrate, leaching and culturing at 28 ℃ for 20h, and separating and leaching heavy metals in raw sludge to a water phase;
C. sludge precipitation: precipitating the leached sludge to obtain sludge with low heavy metal content and sewage with high heavy metal content;
D. putting the sludge with low heavy metal content and other raw materials into a composting fermentation mixer, and stirring and mixing; controlling the speed of a rotor at 65rpm, stirring and fermenting for 2 days under an aerobic condition, and controlling the temperature to be lower than 60 ℃;
E. adjusting the speed of a rotor to 30rpm, continuously stirring and fermenting for 8 days, and cooling to room temperature.
And in the step C, enriching the sewage with high heavy metal content, and then extracting the heavy metal.
Example 2
An organic microbial fertilizer harmless to the environment comprises the following components in parts by weight: 50 parts of compound microbial agent, 80 parts of straw, 80 parts of sludge, 30 parts of human and animal manure, 55 parts of calcium oxide, 10 parts of ammonium polyphosphate, 20 parts of urea, 15 parts of calcium superphosphate and 300 parts of water.
In the compound microbial agent, the addition amount of functional bacteria is not less than 1 hundred million/g.
The compound microbial agent consists of an aerobic denitrifying bacterial agent, thiobacillus ferrooxidans, a bacillus subtilis bacterial agent, a bacillus licheniformis bacterial agent, a bacillus laterosporus bacterial agent and a bacillus megaterium bacterial agent.
The sludge is pond sludge or municipal sludge with the water content of 50 percent.
The preparation method of the microbial fertilizer suitable for quickly reducing the salt and changing the alkali of the saline-alkali soil of the soybeans comprises the following steps:
A. adding the compound microbial agent into the sludge, introducing nitrogen and carrying out enrichment culture until the pH value is reduced to 3.5 to obtain domesticated sludge;
B. inoculating acclimatized sludge into raw sludge according to the volume ratio of 5%, adding 12g/L Na2S2O3Adjusting the initial pH value to 7.0 as a substrate, leaching and culturing at 20 ℃ for 24h, and separating and leaching heavy metals in raw sludge to a water phase;
C. sludge precipitation: precipitating the leached sludge to obtain sludge with low heavy metal content and sewage with high heavy metal content;
D. putting the sludge with low heavy metal content and other raw materials into a composting fermentation mixer, and stirring and mixing; controlling the speed of a rotor at 50rpm, stirring and fermenting for 3 days under an aerobic condition, and controlling the temperature to be lower than 60 ℃;
E. adjusting the speed of a rotor to 25rpm, continuously stirring and fermenting for 10 days, and cooling to room temperature.
And in the step C, enriching the sewage with high heavy metal content, and then extracting the heavy metal.
Example 3
An organic microbial fertilizer harmless to the environment comprises the following components in parts by weight: 20 parts of compound microbial agent, 120 parts of straw, 60 parts of sludge, 50 parts of human and animal manure, 30 parts of calcium oxide, 40 parts of ammonium polyphosphate, 10 parts of urea, 40 parts of calcium superphosphate and 300 parts of water.
In the compound microbial agent, the addition amount of functional bacteria is not less than 1 hundred million/g.
The compound microbial agent consists of an aerobic denitrifying bacterial agent, thiobacillus ferrooxidans, a bacillus subtilis bacterial agent, a bacillus licheniformis bacterial agent, a bacillus laterosporus bacterial agent and a bacillus megaterium bacterial agent.
The sludge is pond sludge or municipal sludge with the water content of 30 percent.
The preparation method of the microbial fertilizer suitable for quickly reducing the salt and changing the alkali of the saline-alkali soil of the soybeans comprises the following steps:
A. adding the compound microbial agent into the sludge, introducing nitrogen and carrying out enrichment culture until the pH value is reduced to 4.0 to obtain domesticated sludge;
B. inoculating acclimatized sludge into raw sludge according to the volume ratio of 5%, adding 12g/L Na2S2O3Adjusting the initial pH value to 5.0 as a substrate, leaching and culturing at 30 ℃ for 16h, and separating and leaching heavy metals in raw sludge to a water phase;
C. sludge precipitation: precipitating the leached sludge to obtain sludge with low heavy metal content and sewage with high heavy metal content;
D. putting the sludge with low heavy metal content and other raw materials into a composting fermentation mixer, and stirring and mixing; controlling the speed of a rotor at 65rpm, stirring and fermenting for 2 days under an aerobic condition, and controlling the temperature to be lower than 60 ℃;
E. adjusting the speed of a rotor to 30rpm, continuously stirring and fermenting for 8 days, and cooling to room temperature.
And in the step C, enriching the sewage with high heavy metal content, and then extracting the heavy metal.
Comparative example 1
The thiobacillus ferrooxidans in example 1 was removed, and the rest of the formulation and preparation method were unchanged.
The organic microbial fertilizer prepared in examples 1 to 3 was tested as follows, and the content of each heavy metal in the sludge before treatment was as follows: cu element 55 mg. L-1Cd element 22 mg. L-1Hg element 25 mg.L-1108 mg.L of Cr element-1Pd element 58 mg. L-1And counting the removal rate of various heavy metals after treatment.
| Removal rate% | Cu element | Cd element | Hg element | Cr element | Pd element |
| Example 1 | 97.5 | 99.9 | 99.1 | 98.5 | 99.2 |
| Example 2 | 97.7 | 99.9 | 99.3 | 98.6 | 99.4 |
| Example 3 | 97.7 | 99.7 | 99.0 | 98.2 | 99.1 |
| Comparative example 1 | 72.1 | 74.5 | 70.1 | 62.8 | 68.5 |
From the above test data, it can be known that the organic microbial fertilizer of the present invention has a very low heavy metal content.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. An organic microbial fertilizer harmless to environment is characterized by comprising the following components of a compound microbial agent, straws, sludge, human and animal excreta, calcium oxide, ammonium polyphosphate, urea, calcium superphosphate and water.
2. An environmentally friendly organic microbial fertilizer as claimed in claim 1, comprising the following ingredients in parts by weight: 20-50 parts of compound microbial agent, 80-120 parts of straw, 60-80 parts of sludge, 30-50 parts of human and animal manure, 30-55 parts of calcium oxide, 10-40 parts of ammonium polyphosphate, 10-20 parts of urea, 15-40 parts of calcium superphosphate and 300 parts of water.
3. An environmentally friendly organic microbial fertilizer as claimed in claim 1 or 2, wherein the amount of functional bacteria added in the complex microbial agent is not less than 1 million/g.
4. The environmentally friendly organic microbial fertilizer of claim 1, wherein the complex microbial inoculant consists of an aerobic denitrifying inoculant, Thiobacillus ferrooxidans, a Bacillus subtilis inoculant, a Bacillus licheniformis inoculant, a Bacillus laterosporus inoculant, and a Bacillus megaterium inoculant.
5. An environmentally friendly organic microbial fertilizer as claimed in claim 1, wherein the sludge is pond sludge or municipal sludge having a water content of 30-50%.
6. An environmentally friendly organic microbial fertilizer as claimed in any one of claims 1 to 5, which is prepared by a process comprising the steps of:
A. adding the compound microbial agent into the sludge, introducing nitrogen and carrying out enrichment culture until the pH value is reduced to 3.5-4.0 to obtain domesticated sludge;
B. inoculating domesticated sludge into raw sludge according to volume ratio of 5-12%, adding 8-12g/L Na2S2O3Adjusting the initial pH value to 5-7 as a substrate, leaching and culturing at 20-30 ℃ for 16-24h, and separating and leaching heavy metals in raw sludge into a water phase;
C. sludge precipitation: precipitating the leached sludge to obtain sludge with low heavy metal content and sewage with high heavy metal content;
D. putting the sludge with low heavy metal content and other raw materials into a composting fermentation mixer, and stirring and mixing; controlling the speed of a rotor at 50-65rpm, stirring and fermenting for 2-3 days under an aerobic condition, and controlling the temperature to be lower than 60 ℃;
E. adjusting the speed of the rotor to 25-30rpm, continuously stirring and fermenting for 8-10 days, and cooling to room temperature.
7. The environmentally friendly organic microbial fertilizer of claim 1, wherein in the step C, the high heavy metal content sewage is enriched and then subjected to heavy metal extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713681.1A CN111792971A (en) | 2020-07-23 | 2020-07-23 | Organic microbial fertilizer harmless to environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713681.1A CN111792971A (en) | 2020-07-23 | 2020-07-23 | Organic microbial fertilizer harmless to environment |
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| Publication Number | Publication Date |
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| CN111792971A true CN111792971A (en) | 2020-10-20 |
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| CN202010713681.1A Withdrawn CN111792971A (en) | 2020-07-23 | 2020-07-23 | Organic microbial fertilizer harmless to environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321367A (en) * | 2020-10-29 | 2021-02-05 | 天津中医药大学 | Method for removing heavy metals in traditional Chinese medicine residues |
| CN112759485A (en) * | 2020-12-31 | 2021-05-07 | 吉林省农业科学院 | Special drip irrigation fertilizer for saline-alkali farmland straw returning seedling stage |
-
2020
- 2020-07-23 CN CN202010713681.1A patent/CN111792971A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112321367A (en) * | 2020-10-29 | 2021-02-05 | 天津中医药大学 | Method for removing heavy metals in traditional Chinese medicine residues |
| CN112759485A (en) * | 2020-12-31 | 2021-05-07 | 吉林省农业科学院 | Special drip irrigation fertilizer for saline-alkali farmland straw returning seedling stage |
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Application publication date: 20201020 |
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