CN115073239A - Preparation method of organic fertilizer compounded by livestock manure and phosphate tailings - Google Patents
Preparation method of organic fertilizer compounded by livestock manure and phosphate tailings Download PDFInfo
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- CN115073239A CN115073239A CN202210728092.XA CN202210728092A CN115073239A CN 115073239 A CN115073239 A CN 115073239A CN 202210728092 A CN202210728092 A CN 202210728092A CN 115073239 A CN115073239 A CN 115073239A
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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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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
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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
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
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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
- 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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Abstract
The invention discloses a preparation method of an organic fertilizer compounded by livestock and poultry manure and phosphate tailings, and relates to the technical field of organic fertilizer preparation. The method comprises the following steps of pretreatment of the phosphate tailings: measuring the pH value of the flotation phosphate tailing pulp, adding quicklime into the pulp and stirring when the pH value is less than 8, controlling the pH value of the pulp to be 8-9, and performing filter pressing on the pulp to obtain a phosphate tailing filter cake with the water content of 10-15%; pretreatment of livestock manure: air drying, sun drying or oven drying fresh livestock feces, and controlling water content to be less than or equal to 10%; uniformly mixing and stirring the phosphate tailing filter cake, the dried livestock and poultry manure and the microbial agent to obtain an organic fertilizer; applying the organic fertilizer into soil 10-20 days before planting, and thoroughly watering with water after ploughing. The prepared organic fertilizer meets the national standard of organic fertilizers, has the effect of improving soil acidification, can promote the utilization of phosphorus, and realizes the reutilization of phosphorus tailings solid wastes.
Description
Technical Field
The invention relates to the technical field of organic fertilizer preparation, in particular to a preparation method of an organic fertilizer compounded by livestock and poultry manure and phosphate tailings.
Background
With the rapid development of economy, the demand of phosphorus is increasing day by day, the large-scale exploitation of phosphorite resources is promoted, and with the gradual depletion of phosphorite grade, phosphorite is required to be subjected to phosphorus enrichment through flotation before use, flotation tailings generated in the process contain indissolvable residual phosphorus, a large amount of mineral impurities and harmful substances, most tailings reservoirs are built at present and are taken as solid wastes to be stockpiled, so that the disposal mode has large environmental and safety risks, and enterprises are required to pay a large amount of cost.
On the other hand, with the frequent application of a single fertilizer, soil is hardened and acidified, which greatly hinders the absorption of crops to nutrients, reduces the yield of crops and also destroys the soil environment. Therefore, the development of an organic fertilizer which can fully utilize solid wastes and improve soil is urgently needed.
Disclosure of Invention
The invention aims to provide a preparation method of an organic fertilizer compounded by livestock and poultry manure and phosphate tailings, and solves the problems that the existing flotation phosphate tailings are difficult to utilize, and soil is acidified due to frequent application of a single chemical fertilizer.
In order to solve the technical problems, the invention adopts the following technical scheme: a preparation method of an organic fertilizer compounded by livestock manure and phosphate tailings is characterized by comprising the following steps:
s1, pretreatment of phosphate tailings: measuring the pH value of the flotation phosphate tailing pulp, adding quicklime into the pulp and stirring when the pH value is less than 8, controlling the pH value of the pulp to be 8-9, and performing filter pressing on the pulp to obtain a phosphate tailing filter cake with the water content of 10-15%;
s2, pretreatment of the livestock manure: air drying, sun drying or oven drying fresh livestock feces, and controlling water content to be less than or equal to 10%;
s3, mixing and stirring the phosphate tailing filter cake, the dried livestock and poultry manure and a microbial agent uniformly to obtain an organic fertilizer;
s4, applying the organic fertilizer into soil 10-20 days before planting, and thoroughly watering with water after ploughing.
The further technical proposal is that the drying temperature in the step S2 is 50-80 ℃, the dried livestock manure is crushed and sieved by a 1mm sieve.
The further technical proposal is that the livestock manure in the step S2 is one of pig manure and sheep manure, or a mixture of one of pig manure and sheep manure, chicken manure and cattle manure.
The further technical scheme is that the raw materials in the step S3 are calculated according to the parts by weight: 20-35 parts of phosphorus tailing filter cake, 65-80 parts of dried livestock manure and 1-2 parts of microbial agent.
The further technical scheme is that the microbial agent is at least one of saccharomycetes, bacillus subtilis, pseudomonas, lactic acid bacteria and bacillus megatherium, and the number of effective viable bacteria (cfu) in the microbial agent is more than or equal to 2.0 hundred million/ml.
Compared with the prior art, the invention has the beneficial effects that: the pH value of the flotation phosphorus tailing pulp is controlled to be 8-9 and is alkaline, the flotation phosphorus tailing pulp is mixed with livestock manure and a microbial agent to obtain an organic fertilizer, the organic fertilizer is fermented in soil after application, organic matters in the livestock manure are gradually decomposed, insoluble phosphorus in the flotation phosphorus tailing is converted into easily absorbed and more stable fulvic acid state phosphorus and more stable humic acid state phosphorus, meanwhile, the C/P value in the livestock manure can be adjusted, the nutrition of microorganisms is enhanced, the fermentation decomposition is promoted, and the loss of nitrogen can be reduced. Meanwhile, the acidification of the soil is adjusted, the pH value of the soil is effectively improved, and the crops can absorb the nutrient components conveniently. In the process of phosphorus circulation in soil, microbial metabolic activity is the pivot of conversion and circulation of mineral elements in soil, and phosphorus in the phosphorus-containing compounds can be released through physiological metabolic activity of the microbial metabolic activity, so that the utilization rate of phosphorus is further improved, and the fertilizer efficiency of the organic fertilizer is greatly improved.
Drawings
Fig. 1 is a picture of a real object in example 1 of the present invention.
Fig. 2 is a picture of a real object in embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
(1) Pretreatment of the phosphate tailings: selecting flotation phosphorus tailings of a certain dressing plant of Yunnan phosphorization group, measuring the pH value of the pulp of the flotation phosphorus tailings to be 8.2, and performing filter pressing on the pulp to obtain a phosphorus tailings filter cake with the water content of 13%;
(2) pretreatment of livestock and poultry manure: placing fresh sheep manure in a ventilated and dry plastic greenhouse, airing for 10 days to obtain sheep manure with the water content of 8%, grinding, sieving by 1mm, and removing wool and other mechanical impurities;
(3) preparing an organic fertilizer: weighing 65 parts of pretreated sheep manure and 20 parts of phosphate tailing powder, adding 1 part of liquid microbial agent, uniformly mixing, and measuring the pH value, the water content, the organic matter content, the total nitrogen content, the total phosphorus content and the total potassium content. Wherein the microbial agent is a mixed microbial agent of yeast and pseudomonas, and the total effective viable count (cfu) is more than or equal to 2.0 hundred million/ml.
The data of each index are shown in the following table
| Index (I) | pH value | Has water content of% | Content of organic matter% | Total nitrogen content% | Total phosphorus content P 2 O 5 (％) | Total potassium content K 2 O(％) |
| Numerical value | 8.03 | 11.02 | 38.66 | 2.10 | 8.25 | 1.83 |
(4) Mixing the prepared organic fertilizer and soil uniformly, performing a potting test, wherein the mixing ratio of the soil to the fertilizer is 10:1, filling the soil-fertilizer mixture into a pot, thoroughly watering with tap water, standing for 20 days, and watering for 4 times during the period to keep the water content of the soil at about 30%. And (5) performing a cabbage planting test after the fertilizer is cured.
As shown in figure 1, the growth condition of the Chinese cabbage after being sown for 28 days after the sheep manure-phosphate tailings mixed with the organic fertilizer is applied to the upper part of the figure, and the growth condition of the Chinese cabbage after being sown for 28 days after the commercial common compound fertilizer is applied to the lower row of the figure can be seen, so that the organic fertilizer has remarkable fertilizer efficiency.
Example 2
(1) Pretreatment of the phosphate tailings: selecting flotation phosphorus tailings of a certain ore dressing plant from Yunnan Jinning, measuring the pH value of the pulp of the flotation phosphorus tailings to be 7.5, adding quicklime into the pulp, stirring, controlling the pH value of the pulp to be 8.5, and performing filter pressing on the pulp to obtain a phosphorus tailings filter cake with the water content of 15%;
(2) pretreatment of livestock and poultry manure: placing fresh pig manure in an oven, drying for 48 hours at 80 ℃ to obtain pig manure with the water content of 1%, grinding, sieving and removing mechanical impurities;
(3) preparing an organic fertilizer: weighing 80 parts of pretreated pig manure, 35 parts of phosphate tailing powder and 2 parts of microbial agent, uniformly mixing, and measuring the pH value, the water content, the organic matter content, the total nitrogen content, the total phosphorus content and the total potassium content. Wherein the microbial agent is a mixed microbial agent of bacillus subtilis and lactobacillus, and the total effective viable count (cfu) is more than or equal to 2.0 hundred million/ml.
The data of each index are shown in the following table
| Index (I) | pH value | Has water content of% | Content of organic matter% | Total nitrogen content% | Total phosphorus content P 2 O 5 (％) | Total potassium content K 2 O(％) |
| Numerical value | 8.21 | 1.02 | 34.53 | 1.88 | 8.73 | 1.21 |
(4) Mixing the prepared organic fertilizer and soil uniformly, performing a potting test, wherein the mixing ratio of the soil to the fertilizer is 10:1, filling the soil-fertilizer mixture into a pot, thoroughly watering the pot with tap water, standing for 15 days, watering for 4 times during the period to keep the water content of the soil at about 30%, and performing a Chinese cabbage planting test after the fertilizer is cured.
As shown in figure 2, the growth condition of the Chinese cabbage after being sown for 28 days after the pig manure-phosphate tailings are applied to the upper part of the figure is the growth condition of the Chinese cabbage after being sown for 28 days after the common compound fertilizer is applied to the lower row of the figure, and the fertilizer effect of the organic fertilizer is obvious.
Example 3
(1) Pretreatment of the phosphate tailings: selecting phosphate tailings in a phosphate ore flotation plant tailing pond of Yunnan phosphorization group, measuring the pH value of flotation phosphate tailing pulp to be 8.1, and performing filter pressing treatment by a filter pressing device, wherein the water content of the phosphate tailing powder after filter pressing is 12%;
(2) pretreatment of livestock and poultry manure: putting fresh chicken manure and cow manure into an oven, drying for 48 hours at 80 ℃ to obtain the water content of the chicken manure and cow manure of 0.5%, grinding, sieving and removing mechanical impurities;
(3) preparing an organic fertilizer: weighing 20 parts of pretreated chicken manure, 40 parts of cow manure, 35 parts of phosphate tailing powder and 1 part of microbial agent, uniformly mixing, and measuring the pH value, the water content, the organic matter content, the total nitrogen content, the total phosphorus content and the total potassium content. Wherein the microbial agent is bacillus megaterium, and the total effective viable count (cfu) is more than or equal to 2.0 hundred million/ml.
The data of each index are shown in the following table
| Index (es) | pH value | Has water content of% | Content of organic matter% | Total nitrogen content% | Total phosphorus content P 2 O 5 (％) | Total potassium content K 2 O(％) |
| Numerical value | 8.14 | 0.89 | 58.13 | 2.98 | 7.98 | 2.05 |
(4) Mixing the prepared organic fertilizer and soil uniformly, performing a potting test, wherein the mixing ratio of the soil to the fertilizer is 10:1, filling the soil-fertilizer mixture into a pot, thoroughly watering the pot with tap water, standing for 20 days, watering for 4 times during the period to keep the water content of the soil at about 30%, and performing a Chinese cabbage planting test after the fertilizer is cured.
Although the invention has been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts or arrangements, other uses will also be apparent to those skilled in the art.
Claims (5)
1. A preparation method of an organic fertilizer compounded by livestock manure and phosphate tailings is characterized by comprising the following steps:
s1, pretreatment of phosphate tailings: measuring the pH value of the flotation phosphate tailing pulp, adding quicklime into the pulp and stirring when the pH value is less than 8, controlling the pH value of the pulp to be 8-9, and performing filter pressing on the pulp to obtain a phosphate tailing filter cake with the water content of 10-15%;
s2, pretreatment of the livestock manure: air drying, sun drying or oven drying fresh livestock feces, and controlling water content to be less than or equal to 10%;
s3, mixing and stirring the phosphate tailing filter cake, the dried livestock and poultry manure and a microbial agent uniformly to obtain an organic fertilizer;
s4, applying the organic fertilizer into soil 10-20 days before planting, and thoroughly watering with water after ploughing.
2. The preparation method of the organic fertilizer compounded by the livestock manure and the phosphate tailings as claimed in claim 1, which is characterized by comprising the following steps: in the step S2, the drying temperature is 50-80 ℃, and the dried livestock manure is crushed and sieved by a 1mm sieve.
3. The preparation method of the organic fertilizer compounded by the livestock manure and the phosphate tailings as claimed in claim 1, which is characterized by comprising the following steps: and in the step S2, the livestock manure is one of pig manure and sheep manure, or a mixture of one of pig manure and sheep manure, chicken manure and cattle manure.
4. The preparation method of the organic fertilizer compounded by the livestock manure and the phosphate tailings as claimed in claim 1, which is characterized by comprising the following steps: the raw materials in the step S3 are calculated according to the parts by weight: 20-35 parts of phosphorus tailing filter cake, 65-80 parts of dried livestock manure and 1-2 parts of microbial agent.
5. The preparation method of the organic fertilizer compounded by the livestock manure and the phosphate tailings as claimed in claim 1, which is characterized by comprising the following steps: the microbial agent is at least one of saccharomycetes, bacillus subtilis, pseudomonas, lactic acid bacteria and bacillus megaterium, and the effective viable count in the microbial agent is more than or equal to 2.0 hundred million/ml.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107698395A (en) * | 2017-10-26 | 2018-02-16 | 湖北大学 | A kind of microbial organic fertilizer prepared using waste phosphate tailing powder and preparation method thereof |
| CN108794167A (en) * | 2018-06-27 | 2018-11-13 | 湖南省农业环境生态研究所 | A kind of organic fertilizer and preparation method and application containing mid low grade phosphate rock powder |
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- 2022-06-24 CN CN202210728092.XA patent/CN115073239A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107698395A (en) * | 2017-10-26 | 2018-02-16 | 湖北大学 | A kind of microbial organic fertilizer prepared using waste phosphate tailing powder and preparation method thereof |
| CN108794167A (en) * | 2018-06-27 | 2018-11-13 | 湖南省农业环境生态研究所 | A kind of organic fertilizer and preparation method and application containing mid low grade phosphate rock powder |
Non-Patent Citations (3)
| Title |
|---|
| 单德鑫 等: "好氧堆肥对难溶性磷转化的影响" * |
| 吕鉴于 等: "不同有机肥对矿区复垦土壤磷素矿化特征研究" * |
| 郭海超 等: "改善磷矿粉肥效方法研究进展" * |
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