CN112125752A - High-nutrition soil remediation regulator and preparation method thereof - Google Patents
High-nutrition soil remediation regulator and preparation method thereof Download PDFInfo
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- CN112125752A CN112125752A CN202011028560.XA CN202011028560A CN112125752A CN 112125752 A CN112125752 A CN 112125752A CN 202011028560 A CN202011028560 A CN 202011028560A CN 112125752 A CN112125752 A CN 112125752A
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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
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- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a high-nutrition soil restoration regulator and a preparation method thereof, wherein the restoration regulator is prepared from the following raw materials in parts by weight: 10-15 parts of calcium hydroxy phosphate, 20-25 parts of biomass charcoal, 10-25 parts of sodium sulfide, 20-30 parts of sodium bentonite, 10-15 parts of ammonium phosphate, 3-6 parts of aminopolycarboxylic acid, 0.5-5 parts of calcium silicate, 0.5-5 parts of lime, 1-10 parts of calcium phosphate, 1-5 parts of sulfur, 25-35 parts of organic fertilizer and 3-8 parts of amino acid; the method is characterized in that a mixture of calcium hydroxy phosphate and an organic fertilizer is used as a raw material, biomass charcoal, sodium bentonite, sodium sulfide, ammonium phosphate and amino polycarboxylic acid are poured into a mixing tank after grinding treatment, sulfur, calcium phosphate, lime and calcium silicate are mixed for the third time in the mixing tank, and then the mixture and solid powder are placed in a vacuum tube furnace for sintering, so that the cost is low, the soil structure is not damaged, the effect of repairing soil is good, the pollution of heavy metal to soil can be obviously reduced, and nutrient elements are not easy to lose and the efficiency is high.
Description
Technical Field
The invention relates to the technical field of soil pollution remediation, in particular to a high-nutrition soil remediation regulator and a preparation method thereof.
Background
According to the national soil pollution state survey bulletin published by the ministry of environmental protection and the ministry of national soil resources 2014: the national soil environment condition is totally unobjective, the soil pollution in partial regions is serious, the quality of the cultivated land soil environment is great, the soil environment problem of the industrial and mining waste land is prominent, artificial activities such as the industrial and mining industry and agriculture and the like and high background value of the soil environment are main causes of soil pollution or exceeding, the total exceeding rate of the national soil is 16.1 percent, wherein the proportion of slight, mild, moderate and severe pollution points is respectively 11.2 percent, 2.3 percent, 1.5 percent and 1.1 percent, the pollution types are mainly inorganic types, organic types are secondary types, the proportion of composite type pollution is small, and the number of the inorganic pollutant exceeding points accounts for 82.8 percent of all the exceeding points.
The invention is disclosed in China: a soil restoration regulator for vegetable planting (publication No. CN107857659A) is disclosed, which can improve soil hardening and soil pH value by improving soil aggregate structure and regulating soil pH value, but has certain problems;
although the physicochemical properties of soil are improved by trace element fertilizers, microbial agents and the like, the problems of low remediation efficiency, high treatment cost and the like exist, the soil structure is often damaged, certain nutrient elements are often lost, and the soil cannot be remedied, so that the high-nutrition soil remediation regulator and the preparation method thereof are provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a high-nutrition soil remediation regulator and a preparation method thereof.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the high-nutrition soil restoration regulator is prepared from the following raw materials in parts by weight:
10-15 parts of calcium hydroxy phosphate, 20-25 parts of biomass charcoal, 10-25 parts of sodium sulfide, 20-30 parts of sodium bentonite, 10-15 parts of ammonium phosphate, 3-6 parts of aminopolycarboxylic acid, 0.5-5 parts of calcium silicate, 0.5-5 parts of lime, 1-10 parts of calcium phosphate, 1-5 parts of sulfur, 25-35 parts of organic fertilizer and 3-8 parts of amino acid.
Preferably: the sodium bentonite is composed of montmorillonite, attribute type and crystal chemical substance, and the proportion of montmorillonite to attribute type and crystal chemical substance is 0.5-1: 8: 1-1.5.
Preferably: the organic fertilizer consists of peptides, nitrogen, phosphorus and potassium, and the ratio of nitrogen to the peptides is 0.9-1.2: 1-1.4.
The invention also provides a preparation method of the high-nutrition soil remediation regulator, which comprises the following steps:
step one, premixing: grinding a mixture of calcium hydroxy phosphate and an organic fertilizer to obtain solid powder with the particle size of less than 3 mm;
step two, stirring: pouring the biomass carbon, sodium bentonite, sodium sulfide, ammonium phosphate, amino polycarboxylic acid and amino acid into a mixing tank, mixing and stirring for 35-40min at the rotation speed of 250-300r/min to obtain a secondary mixture;
step three, secondary mixing: mixing sulfur, calcium phosphate, lime and calcium silicate in a mixing tank for the third time, wherein the stirring time is 20-28min, and the rotating speed is 300-;
step four, sintering: placing the mixed third mixture and solid powder into a vacuum tube furnace for sintering;
step five: mixing for the third time: grinding the sintered material into powder of 200-400 meshes, and mixing the powder with deionized water to obtain the soil remediation regulator.
Preferably: in the first step, the mass specific gravity of the calcium hydroxy phosphate is 15: 1, and the calcium hydroxy phosphate is pyrolyzed in vacuum for 30-34min under the conditions that the system pressure is 20-28kPa and the pyrolysis temperature is 500-550 ℃.
Preferably: in the second step, the sodium bentonite in the soil remediation agent is solid powder with the alkalinity coefficient of more than 1, the biomass charcoal content of 60-88% and the particle size of less than 2 mm.
Preferably: in the third step, after the third mixture is placed in a vacuum tube furnace, when the temperature rising and falling curve is adjusted, the temperature rising rate is 10-15 ℃/min, and the temperature falling rate is 15-18 ℃/min.
Preferably: in the fifth step, a pneumatic grinder is used for grinding the materials, a centrifugal grinding method is adopted, the rotation speed is 140-.
(III) advantageous effects
Compared with the prior art, the invention provides a high-nutrition soil remediation regulator and a preparation method thereof, and the high-nutrition soil remediation regulator has the following beneficial effects:
the method comprises the steps of taking a mixture of hydroxyl calcium phosphate and an organic fertilizer as a raw material, grinding to obtain solid powder with the particle size of less than 3mm, pouring biomass carbon, sodium bentonite, sodium sulfide, ammonium phosphate and amino polycarboxylic acid into a mixing tank, mixing sulfur, calcium phosphate, lime and calcium silicate in the mixing tank for the third time, and sintering the mixture and the solid powder in a vacuum tube furnace.
Drawings
FIG. 1 is a flow chart of the preparation method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
A high-nutrition soil restoration regulator is prepared from the following raw materials in parts by weight:
10 parts of calcium hydroxy phosphate, 20 parts of biomass charcoal, 10 parts of sodium sulfide, 20 parts of sodium bentonite, 10 parts of ammonium phosphate, 3 parts of aminopolycarboxylic acid, 0.5 part of calcium silicate, 0.5 part of lime, 1 part of calcium phosphate, 1 part of sulfur, 25 parts of organic fertilizer and 3-8 parts of amino acid.
In this embodiment, specifically: the sodium bentonite consists of montmorillonite, attribute type and crystal chemical substance, and the proportion of montmorillonite to attribute type and crystal chemical substance is 0.5: 8: 1; the bentonite has hygroscopicity, can absorb 8-15 water quantity in the body, can swell after absorbing water by several times, can reach more than 30 times, can disperse in an aqueous medium to form a colloidal suspension, the suspension has certain viscosity and thixotropy, and the admixture of the bentonite and fine debris substances such as water, mud or sand has plasticity and cohesiveness and stronger cation exchange capacity, while the amino acid can promote the formation of soil aggregates, the use of the amino acid can change the physicochemical properties of overhigh salt content, overhigh alkalinity, high soil particle dispersion and poor soil structure in the soil, and the amino acid is an accelerant and a catalyst for synthesizing various enzymes in plants and plays an important role in plant metabolism. The administration of amino acids increases the number of aerobic bacteria, actinomycetes and cellulolytic bacteria. Is beneficial to accelerating the mineralization of organic matters and promoting the release of nutrient elements.
Further: the organic fertilizer consists of peptides, nitrogen, phosphorus and potassium, and the ratio of nitrogen to the peptides is 0.9: 1; organic fertilizers used in organic agriculture need to be certified by an organic certification institution, the organic fertilizers accord with the production standards of organic products, in recent years, various biofertilizers in China develop rapidly, the annual output reaches more than tens of thousands of tons, the biofertilizers are mainly characterized by high technological content, obvious yield increasing effect and no public hazard, the production, popularization and application of the biofertilizers have positive significance for improving soil fertility, increasing crop yield, improving crop quality and practically promoting agricultural sustainable development, and the problems of the biofertilizers in the aspects of production, product quality, use and the like are solved.
The invention also provides a preparation method of the high-nutrition soil remediation regulator, which comprises the following steps:
step one, premixing: grinding a mixture of calcium hydroxy phosphate and an organic fertilizer to obtain solid powder with the particle size of less than 3 mm;
step two, stirring: pouring the biomass carbon, sodium bentonite, sodium sulfide, ammonium phosphate, amino polycarboxylic acid and amino acid into a mixing tank, mixing and stirring for 35min at the rotating speed of 250r/min to obtain a secondary mixture;
step three, secondary mixing: mixing sulfur, calcium phosphate, lime and calcium silicate in a mixing tank for the third time, stirring for 20min at a rotation speed of 300r/min to obtain a mixture for the third time, wherein the sulfur, the calcium phosphate, the lime and the calcium silicate are respectively solid powder with the particle size of less than 2 mm;
step four, sintering: placing the mixed third mixture and solid powder into a vacuum tube furnace for sintering;
step five: mixing for the third time: grinding the sintered materials into powder of 200 meshes, and mixing the powder with deionized water to obtain the soil remediation regulator.
In this embodiment, specifically: in the first step, the calcium hydroxy phosphate has a mass specific gravity of 15: 1, and is pyrolyzed in vacuum for 30min under the conditions that the system pressure is 20kPa and the pyrolysis temperature is 500 ℃; calcium sodium hydroxy polyphosphate (HAP) is a novel inorganic high molecular material, which has the ability to exchange energy and substances with bone tissues for repair.
On the basis of the scheme: in the first step, the sodium bentonite in the soil remediation agent is solid powder with the alkalinity coefficient of more than 1, the biomass charcoal content of 60-88% and the particle size of less than 2 mm; the biomass charcoal is a porous solid particulate substance which is generated by pyrolysis of carbon-rich biomass under the anaerobic or anoxic condition, has high aromaticity and carbon-rich property, contains a large amount of carbon and plant nutrient substances, has a rich pore structure, has a large specific surface area, contains a large amount of oxygen-containing active groups on the surface, is a multifunctional material, can improve soil, increase fertility, adsorb heavy metals and organic pollutants in soil or sewage, has a good fixing effect on carbon and nitrogen, can reduce emission of greenhouse gases such as CO2, N2O and CH4 and slow global warming.
In this embodiment, specifically: in the third step, after the mixture for three times is placed in a vacuum tube furnace, when the temperature rising and falling curve is adjusted, the temperature rising rate is 10 ℃/min, and the temperature falling rate is 15 ℃/min.
Further: in the fifth step, a centrifugal grinding method is adopted when a pneumatic grinding machine is used for grinding the materials, the rotating speed is 140r/min, and the ratio of the ground powder to the deionized water is 2-to 1.
Example two
A high-nutrition soil restoration regulator is prepared from the following raw materials in parts by weight:
13 parts of calcium hydroxy phosphate, 222 parts of biomass charcoal, 14 parts of sodium sulfide, 27 parts of sodium bentonite, 13 parts of ammonium phosphate, 4 parts of aminopolycarboxylic acid, 3 parts of calcium silicate, 2.5 parts of lime, 6 parts of calcium phosphate, 3 parts of sulfur, 33 parts of organic fertilizer and 3-8 parts of amino acid.
In this embodiment, specifically: the sodium bentonite consists of montmorillonite, attribute type and crystal chemical substance, and the proportion of montmorillonite to attribute type and crystal chemical substance is 0.7: 8: 1.2; the bentonite has hygroscopicity, can absorb 8-15 water quantity in the body, can swell after absorbing water by several times, can reach more than 30 times, can disperse in an aqueous medium to form a colloidal suspension, the suspension has certain viscosity and thixotropy, and the admixture of the bentonite and fine debris substances such as water, mud or sand has plasticity and cohesiveness and stronger cation exchange capacity, while the amino acid can promote the formation of soil aggregates, the use of the amino acid can change the physicochemical properties of overhigh salt content, overhigh alkalinity, high soil particle dispersion and poor soil structure in the soil, and the amino acid is an accelerant and a catalyst for synthesizing various enzymes in plants and plays an important role in plant metabolism. The administration of amino acids increases the number of aerobic bacteria, actinomycetes and cellulolytic bacteria. Is beneficial to accelerating the mineralization of organic matters and promoting the release of nutrient elements.
In this embodiment, specifically: the organic fertilizer consists of peptides, nitrogen, phosphorus and potassium, and the ratio of nitrogen to the peptides is 0.95: 1.3; organic fertilizers used in organic agriculture need to be certified by an organic certification institution, the organic fertilizers accord with the production standards of organic products, in recent years, various biofertilizers in China develop rapidly, the annual output reaches more than tens of thousands of tons, the biofertilizers are mainly characterized by high technological content, obvious yield increasing effect and no public hazard, the production, popularization and application of the biofertilizers have positive significance for improving soil fertility, increasing crop yield, improving crop quality and practically promoting agricultural sustainable development, and the problems of the biofertilizers in the aspects of production, product quality, use and the like are solved.
The invention also provides a preparation method of the high-nutrition soil remediation regulator, which comprises the following steps:
step one, premixing: grinding a mixture of calcium hydroxy phosphate and an organic fertilizer to obtain solid powder with the particle size of less than 3 mm;
step two, stirring: pouring the biomass carbon, sodium bentonite, sodium sulfide, ammonium phosphate, amino polycarboxylic acid and amino acid into a mixing tank, mixing and stirring for 38min at the rotating speed of 280r/min to obtain a secondary mixture;
step three, secondary mixing: adding sulfur, calcium phosphate, lime and calcium silicate into a mixing tank, mixing for the third time, stirring for 25min at a rotation speed of 330r/min to obtain a mixture for the third time, wherein the sulfur, the calcium phosphate, the lime and the calcium silicate are respectively solid powder with a particle size of less than 2 mm;
step four, sintering: placing the mixed third mixture and solid powder into a vacuum tube furnace for sintering;
step five: mixing for the third time: grinding the sintered materials into 300-mesh powder, and mixing the powder with deionized water to obtain the soil remediation regulator.
On the basis of the scheme: in the first step, the calcium hydroxy phosphate has the mass proportion of 15: 1, and is pyrolyzed in vacuum for 32min under the conditions that the system pressure is 25kPa and the pyrolysis temperature is 510 ℃; calcium sodium hydroxy polyphosphate (HAP) is a novel inorganic high molecular material, which has the ability to exchange energy and substances with bone tissues for repair.
In this embodiment, specifically: in the first step, the sodium bentonite in the soil remediation agent is solid powder with the alkalinity coefficient of more than 1, the biomass charcoal content of 70 percent and the grain size of less than 2 mm; the biomass charcoal is a porous solid granular substance which is generated by pyrolysis of carbon-rich biomass under the condition of no oxygen or lack of oxygen, has high aromaticity and rich carbon, contains a large amount of carbon and plant nutrient substances, has a rich pore structure, has a large specific surface area and contains more oxygen-containing active groups on the surface, and is a multifunctional material. The carbon-nitrogen composite fertilizer can improve soil, increase fertility, adsorb heavy metals and organic pollutants in soil or sewage, has a good fixing effect on carbon and nitrogen, can reduce emission of greenhouse gases such as CO2, N2O and CH4 when applied to the soil, and can slow down global warming.
On the basis of the scheme: in the third step, after the mixture is placed in the vacuum tube furnace for three times, when the temperature rising and falling curve is adjusted, the temperature rising rate is 12 ℃/min, and the temperature falling rate is 16 ℃/min.
As a still further scheme of the invention: in the fifth step, a centrifugal grinding method is adopted when a pneumatic grinding machine is used for grinding the materials, the rotation speed is 170r/min, and the ratio of the ground powder to the deionized water is 2: 1.2.
EXAMPLE III
A high-nutrition soil restoration regulator is prepared from the following raw materials in parts by weight:
15 parts of calcium hydroxy phosphate, 25 parts of biomass charcoal, 25 parts of sodium sulfide, 30 parts of sodium bentonite, 15 parts of ammonium phosphate, 6 parts of aminopolycarboxylic acid, 5 parts of calcium silicate, 5 parts of lime, 10 parts of calcium phosphate, 5 parts of sulfur, 35 parts of organic fertilizer and 3-8 parts of amino acid.
In this embodiment, specifically: the sodium bentonite consists of montmorillonite, attribute type and crystal chemical substance, and the proportion of montmorillonite to attribute type and crystal chemical substance is 1: 8: 1.5; the bentonite has hygroscopicity, can absorb 8-15 water quantity in the body, can swell after absorbing water by several times, can reach more than 30 times, can disperse in an aqueous medium to form a colloidal suspension, the suspension has certain viscosity and thixotropy, and the admixture of the bentonite and fine debris substances such as water, mud or sand has plasticity and cohesiveness and stronger cation exchange capacity, while the amino acid can promote the formation of soil aggregates, the use of the amino acid can change the physicochemical properties of overhigh salt content, overhigh alkalinity, high soil particle dispersion and poor soil structure in the soil, and the amino acid is an accelerant and a catalyst for synthesizing various enzymes in plants and plays an important role in plant metabolism. The administration of amino acids increases the number of aerobic bacteria, actinomycetes and cellulolytic bacteria. Is beneficial to accelerating the mineralization of organic matters and promoting the release of nutrient elements.
As a still further scheme of the invention: the organic fertilizer consists of peptides, nitrogen, phosphorus and potassium, and the ratio of nitrogen to the peptides is 1.2: 1.4; organic fertilizers used in organic agriculture need to be certified by an organic certification institution, the organic fertilizers accord with the production standards of organic products, in recent years, various biofertilizers in China develop rapidly, the annual output reaches more than tens of thousands of tons, the biofertilizers are mainly characterized by high technological content, obvious yield increasing effect and no public hazard, the production, popularization and application of the biofertilizers have positive significance for improving soil fertility, increasing crop yield, improving crop quality and practically promoting agricultural sustainable development, and the problems of the biofertilizers in the aspects of production, product quality, use and the like are solved.
The invention also provides a preparation method of the high-nutrition soil remediation regulator, which comprises the following steps:
step one, premixing: grinding a mixture of calcium hydroxy phosphate and an organic fertilizer to obtain solid powder with the particle size of less than 3 mm;
step two, stirring: pouring 3-8 parts of biomass carbon, sodium bentonite, sodium sulfide, ammonium phosphate, aminopolycarboxylic acid and amino acid into a mixing tank, mixing and stirring for 40min at the rotating speed of 300r/min to obtain a secondary mixture;
step three, secondary mixing: mixing sulfur, calcium phosphate, lime and calcium silicate in a mixing tank for the third time, wherein the stirring time is 28min, and the rotating speed is 380r/min, so as to obtain a third mixture, and the sulfur, the calcium phosphate, the lime and the calcium silicate are respectively solid powder with the particle size of less than 2 mm;
step four, sintering: placing the mixed third mixture and solid powder into a vacuum tube furnace for sintering;
step five: mixing for the third time: grinding the sintered material into powder of 400 meshes, and mixing the powder with deionized water to obtain the soil remediation regulator.
In this embodiment, specifically: in the first step, the calcium hydroxy phosphate has the mass proportion of 15: 1, and is pyrolyzed in vacuum for 34min under the conditions that the system pressure is 28kPa and the pyrolysis temperature is 550 ℃; calcium sodium hydroxy polyphosphate (HAP) is a novel inorganic high molecular material, which has the ability to exchange energy and substances with bone tissues for repair.
Further: in the first step, the sodium bentonite in the soil remediation agent is solid powder with the alkalinity coefficient of more than 1, the biomass charcoal content of 88 percent and the grain size of less than 2 mm; the biomass charcoal is a porous solid granular substance which is generated by pyrolysis of carbon-rich biomass under the condition of no oxygen or lack of oxygen, has high aromaticity and rich carbon, contains a large amount of carbon and plant nutrient substances, has a rich pore structure, has a large specific surface area and contains more oxygen-containing active groups on the surface, and is a multifunctional material. The carbon-nitrogen composite fertilizer can improve soil, increase fertility, adsorb heavy metals and organic pollutants in soil or sewage, has a good fixing effect on carbon and nitrogen, can reduce emission of greenhouse gases such as CO2, N2O and CH4 when applied to the soil, and can slow down global warming.
In this embodiment, specifically: in the third step, after the mixture is placed in the vacuum tube furnace for three times, when the temperature rising and falling curve is adjusted, the temperature rising rate is 15 ℃/min, and the temperature falling rate is 18 ℃/min.
Further: in the fifth step, a centrifugal grinding method is adopted when a pneumatic grinding machine is used for grinding the materials, the rotation speed is 180r/min, and the ratio of the ground powder to the deionized water is 3.5: 1.2.
The working principle is as follows: the invention takes the mixture of calcium hydroxy phosphate and organic fertilizer as raw materials, solid powder with the grain diameter of less than 3mm is obtained through grinding treatment, then biomass charcoal, sodium bentonite, sodium sulfide, ammonium phosphate and amino polycarboxylic acid are poured into a mixing tank, mixed and stirred for 35min at the rotating speed of 250r/min to obtain a secondary mixture, sulfur, calcium phosphate, lime and calcium silicate are mixed for the third time in the mixing tank, the stirring time is 20min at the rotating speed of 300r/min to obtain a tertiary mixture, the sulfur, calcium phosphate, lime and calcium silicate are respectively solid powder with the grain diameter of less than 2mm, the mixed tertiary mixture and the solid powder are placed in a vacuum tube furnace for sintering, the sintered material is ground into powder with the grain size of 200 meshes, the preparation has the advantages of low cost, no damage to the soil structure and good soil repairing effect, can obviously reduce the pollution of heavy metals to soil, and has the advantages of difficult loss of nutrient elements and high efficiency.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A high-nutrition soil restoration regulator is characterized in that: the repair regulator is prepared from the following raw materials in parts by weight:
10-15 parts of calcium hydroxy phosphate, 20-25 parts of biomass charcoal, 10-25 parts of sodium sulfide, 20-30 parts of sodium bentonite, 10-15 parts of ammonium phosphate, 3-6 parts of aminopolycarboxylic acid, 0.5-5 parts of calcium silicate, 0.5-5 parts of lime, 1-10 parts of calcium phosphate, 1-5 parts of sulfur, 25-35 parts of organic fertilizer and 3-8 parts of amino acid.
2. The highly nutrient soil remediation conditioner of claim 1, wherein: the sodium bentonite is composed of montmorillonite, attribute type and crystal chemical substance, and the proportion of montmorillonite to attribute type and crystal chemical substance is 0.5-1: 8: 1-1.5.
3. The highly nutrient soil remediation conditioner of claim 1, wherein: the organic fertilizer consists of peptides, nitrogen, phosphorus and potassium, and the ratio of nitrogen to the peptides is 0.9-1.2: 1-1.4.
4. A preparation method of a high-nutrition soil remediation regulator is characterized by comprising the following steps:
step one, premixing: grinding a mixture of calcium hydroxy phosphate and an organic fertilizer to obtain solid powder with the particle size of less than 3 mm;
step two, stirring: pouring the biomass carbon, sodium bentonite, sodium sulfide, ammonium phosphate, amino polycarboxylic acid and amino acid into a mixing tank, mixing and stirring for 35-40min at the rotation speed of 250-300r/min to obtain a secondary mixture;
step three, secondary mixing: mixing sulfur, calcium phosphate, lime and calcium silicate in a mixing tank for the third time, wherein the stirring time is 20-28min, and the rotating speed is 300-;
step four, sintering: placing the mixed third mixture and solid powder into a vacuum tube furnace for sintering;
step five: mixing for the third time: grinding the sintered material into powder of 200-400 meshes, and mixing the powder with deionized water to obtain the soil remediation regulator.
5. The method for preparing a highly nutritious soil remediation regulator as claimed in claim 1, wherein: in the first step, the mass specific gravity of the calcium hydroxy phosphate is 15: 1, and the calcium hydroxy phosphate is pyrolyzed in vacuum for 30-34min under the conditions that the system pressure is 20-28kPa and the pyrolysis temperature is 500-550 ℃.
6. The method for preparing a highly nutritious soil remediation regulator as claimed in claim 1, wherein: in the second step, the sodium bentonite in the soil remediation agent is solid powder with the alkalinity coefficient of more than 1, the biomass charcoal content of 60-88% and the particle size of less than 2 mm.
7. The method for preparing a highly nutritious soil remediation regulator as claimed in claim 1, wherein: in the third step, after the third mixture is placed in a vacuum tube furnace, when the temperature rising and falling curve is adjusted, the temperature rising rate is 10-15 ℃/min, and the temperature falling rate is 15-18 ℃/min.
8. The method for preparing a highly nutritious soil remediation regulator as claimed in claim 1, wherein: in the fifth step, a pneumatic grinder is used for grinding the materials, a centrifugal grinding method is adopted, the rotation speed is 140-.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023061203A1 (en) * | 2021-10-14 | 2023-04-20 | 江西农业大学 | Method for reducing greenhouse gas emissions from heavy metal polluted soil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023061203A1 (en) * | 2021-10-14 | 2023-04-20 | 江西农业大学 | Method for reducing greenhouse gas emissions from heavy metal polluted soil |
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Application publication date: 20201225 |
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