CN110746239A - Mine soil restoration method and restoration material - Google Patents
Mine soil restoration method and restoration material Download PDFInfo
- Publication number
- CN110746239A CN110746239A CN201910972414.3A CN201910972414A CN110746239A CN 110746239 A CN110746239 A CN 110746239A CN 201910972414 A CN201910972414 A CN 201910972414A CN 110746239 A CN110746239 A CN 110746239A
- Authority
- CN
- China
- Prior art keywords
- parts
- soil
- mine
- mine soil
- restoration material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of soil remediation, in particular to a mine soil remediation method and a remediation material; the mine soil restoration material is prepared from the following raw materials in parts by weight: 30-60 parts of bean dregs stone powder, 25-40 parts of calcium powder, 10-20 parts of sawdust, 10-20 parts of wheat bran, 20-35 parts of grass carbon and 10-25 parts of nano montmorillonite; according to different acid-base soils, different soil remediation materials are matched to repair the mine soil, so that the nutrient absorption capacity of the mine soil can be improved, and the mine soil can be repaired.
Description
Technical Field
The invention relates to the technical field of soil remediation, in particular to a mine soil remediation method and a remediation material.
Background
The mine soil pollution control refers to a technical measure for controlling or reducing the pollution of mining operation to the soil environment. After pollutants generated in mining operation enter a soil body, the pollutants are continuously accumulated in the soil through the processes of physical and mechanical absorption, retention, colloid physical and chemical adsorption, chemical precipitation, biological absorption and the like of the soil body on the pollutants, and when a certain amount of pollutants are obtained, the soil composition, the texture, the property and the function of the pollutants are deteriorated, the problems of soil quality degradation, fertilizer retention capacity reduction, barrenness or nutrient imbalance, high heavy metal content, acid bias or alkali bias and the like of the mine soil are caused, and the healthy development of plants and the ecological environment on a mine is influenced.
At present, the repairing method of the mine polluted soil mainly comprises in-situ repairing and ex-situ repairing.
The ex-situ remediation is to transfer the polluted soil from a polluted area to an adjacent point or a reactor, and treat the polluted soil by adopting an electrochemical method, a leaching method, a chemical oxidation method and the like; the repairing method needs large-scale excavation and soil transportation, has high treatment cost, destroys the original distribution structure of the soil and is not suitable for repairing large-area soil on the mine.
In-situ remediation is carried out by a plant, physical and chemical method on the basis of original soil of a mine. According to the phytoremediation, matched heavy metal-enriched plants are selected according to the specific soil quality of a mine, generally the same kind of plants only have tolerance and enrichment capacity to one heavy metal, and the remediation method and the application range are limited. The physical method is mainly characterized in that foreign soil is added on original soil of a mine or the original soil is subjected to electric treatment, and is similar to the problem of ex-situ remediation, a large amount of foreign soil needs to be covered on the surface of the mine soil, and the treatment cost is high; and when the toxicity of the mine soil is high, the soil is difficult to be thoroughly improved by only covering the alien soil. Chemical remediation is to add one or more active substances into the polluted soil and realize the remediation and improvement of the soil by changing the physicochemical properties of the soil.
The existing soil remediation agent is generally prepared by adding other active substances on the basis of organic fertilizer. The invention discloses a cadmium-polluted mine soil restoration agent and a preparation and application method thereof in patent application with application publication number of CN 108889773A, wherein the restoration agent comprises 15-30 parts of modified clay mineral, 20-35 parts of quicklime, 30-45 parts of organic fertilizer, 15-30 parts of biochar and 1-5 parts of polymer macromolecular compound; wherein the organic fertilizer is N, P calculated by total nutrient2O5、K23 to 10 percent of O, 30 to 45 percent of organic matter content and 6.5 to 8.5 of pH. The organic fertilizer is used for providing nutrition and fertility for the barren soil, and the polymer macromolecular compound is used for solidifying heavy metal ions, so that the improvement of the mine soil is realized.
However, the repair cycle of mine soil generally needs a month or longer, and many quick-acting fertilizers are easy to be leached, so that the fertilizer efficiency is affected, and the soil repair effect is poor; although the organic fertilizer can exert certain fertilizer efficiency in the long-term restoration process, the nutrient absorption capacity of the barren soil to the fertilizer is weak, and if the nutrient absorption capacity is not changed from the self property of the soil and the fertilizer and nutrient substances are added externally, the soil is difficult to be restored fundamentally, and the restoration effect on the soil is influenced.
Disclosure of Invention
The first purpose of the invention is to provide a mine soil restoration material, which can improve the nutrient absorption capacity of mine soil and realize restoration of mine soil.
The first purpose of the invention is realized by the following technical scheme:
the mine soil restoration material is prepared from the following raw materials in parts by weight: 30-60 parts of bean dregs stone powder, 25-40 parts of calcium powder, 10-20 parts of sawdust, 10-20 parts of wheat bran, 20-35 parts of grass carbon and 10-25 parts of nano montmorillonite.
By adopting the technical scheme, the bean dregs stone, which is called as refined mountain stone, horse teeth sand and medical stone, has the main chemical components of inorganic aluminosilicate and is a solid substance with spongy porous and large surface area. The bean dregs stone has strong adsorptivity, dissolubility, regulation property, bioactivity, mineralization property and the like, can adsorb metal ions, and can dissolve out more than 40 elements, wherein nearly 20 elements are trace elements. The bean dregs stone contains 15% of Al2O3As neutral oxide, it reacts with alkali (OH) to lower pH value and with acid (H) to raise pH value, so having the function of bidirectional regulation of pH. Therefore, the okara can provide elements required by plant growth on one hand, and can absorb nutrients by utilizing the super-strong adsorption performance of the okara, so that the nutrients are kept, the adsorption performance of soil is improved, and the soil remediation effect of the remediation material is improved.
The lack of primary nutrients in the soil is not a secondary factor if toxic factors are present. When the concentration of one ion in the soil is increased, the uptake of the other ion by the plant is increased or decreased, and when one ion inhibits the uptake of the other ion, antagonism between the two is considered. Ca2+This effect is caused by the toxicity of many heavy metal ions due to Ca2+Tend to relax. Ca2+The existing method can obviously reduce the absorption of heavy metals by plants, and the application of calcium powder can relieve the toxicity of heavy metals in soil and improve the performance of the soil.
Sawdust and wheat bran provide self-fermented components for soil, which is beneficial to improving the property of soil fundamentally and gradually achieving self-repairing ecological balance.
Peat, also known as peat, contains rich nitrogen, potassium, phosphorus, calcium, manganese and other various elements, is a pure natural organic substance, is a sterile, nontoxic, pollution-free and residue-free green substance, and can be used for multiple purposes. The peat is added, so that the peat can play a role in recovering and improving the water holding capacity, the ventilation capacity and the fertilizer retention capacity of the soil, and can also increase the nutrient content, thereby improving the performance of the soil.
The nano-montmorillonite prepared by modifying natural montmorillonite has larger interlayer spacing, better thermal stability and adjustable acidity, so that the nano-montmorillonite has better expansibility and cation exchange property, and dispersibility, viscosity, lubricity, thermal stability and compressive strength in an aqueous medium, thereby increasing the granular structure of soil, combining the adsorbed and fixed fertilizer nutrients with the soil, and 'amplifying' the spatial dimension of fertilizer molecules to be agglomerated in a soil plough layer, thereby further improving the soil remediation effect.
Preferably, the feed additive is prepared from the following raw materials in parts by weight: 40-50 parts of bean dregs stone powder, 30-35 parts of calcium powder, 12-18 parts of sawdust, 12-18 parts of wheat bran, 25-30 parts of grass carbon and 13-20 parts of nano montmorillonite.
Preferably, the calcium powder is calcium sulfate powder and/or calcium carbonate powder.
By adopting the technical scheme, the calcium sulfate powder and/or the calcium carbonate powder are/is added, so that the soil is not damaged while the toxicity of heavy metals in the soil is alleviated.
The second purpose of the invention is to provide a repair material suitable for stronger acid soil, which is prepared from the following raw materials in parts by weight: 30-60 parts of bean dregs stone powder, 25-40 parts of calcium powder, 10-20 parts of sawdust, 10-20 parts of wheat bran, 20-35 parts of grass carbon, 10-25 parts of nano montmorillonite, 30-50 parts of hydrated lime and 15-25 parts of calcium silicate.
By adopting the technical scheme, most mine wastelands have different degrees of acidification, and some wastelands have different degrees of acidificationThe abandoned land has acidity, which is too high to be suitable for the growth of plants, so that the improvement of the acidic condition is needed. Calcium silicate and hydrated lime are used to neutralize the acidic conditions of the soil and to utilize Ca2+The antagonism of the invention can reduce the absorption of heavy metals by plants, so that the repair material of the invention can play a better repair role on the soil with stronger acidity.
Preferably, the feed additive is prepared from the following raw materials in parts by weight: 35-55 parts of bean dregs stone powder, 30-35 parts of calcium powder, 12-18 parts of sawdust, 12-18 parts of wheat bran, 25-30 parts of grass carbon, 15-20 parts of nano-montmorillonite, 35-45 parts of hydrated lime and 18-22 parts of calcium silicate.
The third purpose of the invention is to provide a repair material suitable for stronger alkaline soil, which is prepared from the following raw materials in parts by weight: 30-60 parts of bean dregs stone powder, 25-40 parts of calcium powder, 10-20 parts of sawdust, 10-20 parts of wheat bran, 20-35 parts of grass peat, 10-25 parts of nano montmorillonite and 30-50 parts of coal humic acid.
By adopting the technical scheme, if the pH value of the abandoned mine land is too high, the environment of the abandoned land can be improved by the acidic substances. The application of the coal humic acid with low calorific value can improve the supply level of phosphorus in the alkaline soil only by the alternate soil thermalization process of dry and wet, thereby achieving the aim of improving the soil.
Preferably, the feed additive is prepared from the following raw materials in parts by weight: 35-50 parts of bean dregs stone powder, 30-35 parts of calcium powder, 13-17 parts of sawdust, 13-17 parts of wheat bran, 25-30 parts of grass carbon, 15-20 parts of nano montmorillonite and 35-45 parts of coal humic acid.
The fourth purpose of the invention is to provide a mine soil remediation method, which comprises the following operation steps: uniformly spreading the mine soil restoration material in the first purpose of the invention on the surface of mine soil with pH not less than 7.5 and not more than 6.5, wherein the spreading amount is 0.5-1.5 ton/mu, and ploughing after spreading; sowing and plowing at intervals according to the frequency of 10-20 days/time; sprinkling water to the soil according to the dosage of 0.2-0.5 ton/mu once ploughing; the repair time is 1-3 months.
By adopting the technical scheme, the soil is continuously renovated and modified by repeatedly and alternately sowing and ploughing; water is sprayed every time of ploughing, so that the soil keeps a certain water holding capacity, dozens of elements in the bean dregs stone powder are gradually dissolved out and permeate into the soil, and the effects of improving and repairing the soil performance are further achieved.
The fifth purpose of the invention is to provide a mine soil remediation method, which comprises the following operation steps: uniformly spreading the mine soil restoration material of the second purpose on the surface of mine soil with pH less than 6.5, wherein the spreading amount is 1-3 tons/mu, and ploughing after spreading; sowing and plowing at intervals according to the frequency of 10-20 days/time; sprinkling water to the soil according to the dosage of 0.5-1.5 tons/mu every turn over once; the repair time is 1-3 months.
By adopting the technical scheme, the pH value of the soil is between 6.5 and 7.5, and the soil belongs to neutral soil; soil pH less than 6.5 is acidic soil, is not beneficial to plant growth, and needs to be neutralized to realize soil remediation.
The sixth purpose of the invention is to provide a mine soil remediation method, which comprises the following operation steps: uniformly spreading the mine soil restoration material of the third purpose on the surface of mine soil with the pH value of more than 7.5, wherein the spreading amount is 1-3 tons/mu, and ploughing after spreading; sowing and plowing at intervals according to the frequency of 10-20 days/time; sprinkling water to the soil according to the dosage of 0.5-1.5 tons/mu every turn over once; the repair time is 1-3 months.
By adopting the technical scheme, the soil belongs to alkaline soil when the pH value of the soil is more than 7.5, the alkaline soil is easy to agglomerate locally and is not beneficial to plant growth, and the soil needs to be neutralized so as to realize the restoration of the soil.
In conclusion, the invention has the following beneficial effects:
(1) the repair material can improve the nutrient absorption performance of soil and the metal solidification capacity, so that the nutrient content in the soil is gradually increased, the content of harmful metals is reduced, and the soil is repaired and improved;
(2) the three repairing materials are respectively suitable for neutral, acidic and alkaline soil, can be used for specifically repairing the soil with different pH values, and have strong applicability.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 30kg of bean dregs stone powder, 30kg of calcium sulfate powder, 10kg of sawdust, 10kg of wheat bran, 20kg of grass carbon and 10kg of nano-montmorillonite.
Example 2
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 40kg of bean dregs stone powder, 25kg of calcium sulfate powder, 12kg of sawdust, 12kg of wheat bran, 25kg of grass peat and 13kg of nano-montmorillonite.
Example 3
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 47kg of bean dregs powder, 33kg of calcium carbonate powder, 16kg of sawdust, 14kg of wheat bran, 27kg of grass carbon and 15kg of nano montmorillonite.
Example 4
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 50kg of bean dregs stone powder, 35kg of calcium carbonate powder, 18kg of sawdust, 18kg of wheat bran, 30kg of grass carbon and 20kg of nano-montmorillonite.
Example 5
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 60kg of bean dregs stone powder, 10kg of calcium sulfate powder, 30kg of calcium carbonate powder, 20kg of sawdust, 20kg of wheat bran, 35kg of grass carbon and 25kg of nano montmorillonite.
Example 6
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 30kg of bean dregs stone powder, 25kg of calcium sulfate powder, 10kg of sawdust, 10kg of wheat bran, 20kg of grass carbon, 10kg of nano-montmorillonite, 30kg of hydrated lime and 15kg of calcium silicate.
Example 7
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 35kg of bean dregs stone powder, 30kg of calcium sulfate powder, 12kg of sawdust, 12kg of wheat bran, 25kg of grass peat, 15kg of nano-montmorillonite, 35kg of hydrated lime and 18kg of calcium silicate.
Example 8
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 45kg of bean dregs stone powder, 33kg of calcium carbonate powder, 15kg of sawdust, 15kg of wheat bran, 27kg of grass peat, 18kg of nano-montmorillonite, 40kg of hydrated lime and 20kg of calcium silicate.
Example 9
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 55kg of bean dregs stone powder, 15kg of calcium sulfate powder, 20kg of calcium carbonate powder, 18kg of sawdust, 18kg of wheat bran, 30kg of grass carbon, 20kg of nano montmorillonite, 45kg of hydrated lime and 22kg of calcium silicate.
Example 10
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 60kg of bean dregs stone powder, 20kg of calcium sulfate powder, 20kg of calcium carbonate powder, 20kg of sawdust, 20kg of wheat bran, 35kg of grass peat, 25kg of nano montmorillonite, 50kg of hydrated lime and 25kg of calcium silicate.
Example 11
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 30kg of bean dregs stone powder, 25kg of calcium sulfate powder, 10kg of sawdust, 10kg of wheat bran, 20kg of grass carbon, 10kg of nano-montmorillonite and 30kg of coal humic acid.
Example 12
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 35kg of bean dregs stone powder, 30kg of calcium sulfate powder, 13kg of sawdust, 13kg of wheat bran, 25kg of grass carbon, 15kg of nano-montmorillonite and 35kg of coal humic acid.
Example 13
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 44kg of bean dregs stone powder, 32kg of calcium carbonate powder, 14kg of sawdust, 14kg of wheat bran, 28kg of grass peat, 18kg of nano-montmorillonite and 40kg of coal humic acid.
Example 14
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 50kg of bean dregs stone powder, 20kg of calcium carbonate powder, 15kg of calcium sulfate powder, 17kg of sawdust, 17kg of wheat bran, 30kg of grass peat, 20kg of nano-montmorillonite and 45kg of coal humic acid.
Example 15
The mine soil restoration material is prepared by uniformly mixing and stirring the following raw materials by weight: 60kg of bean dregs stone powder, 20kg of calcium carbonate powder, 20kg of calcium sulfate powder, 20kg of sawdust, 20kg of wheat bran, 35kg of grass peat, 25kg of nano-montmorillonite and 50kg of coal humic acid.
Application example 1
In the mining area A, the pH of mine soil is 6.8, and the pH is in a moderate range of pH not less than 6.5 and not more than 7.5. The area of the abandoned mine land is 96 mu, and no vegetation exists on the soil surface. The mine area a was divided equally into four parts, a1, a2, A3 and a 4. The soil in each area is sampled and detected, and the sampling method and the analysis and detection method are specifically shown in table 1 according to an environmental monitoring analysis method and a recent generation analysis method of soil elements.
The mine soil restoration material of the embodiment 3 of the invention is prepared into a plurality of groups, so that the amount of the restoration material can meet the requirement of the mining area A. The operation is started from the beginning of 1 month in 2018, the mine soil repair materials are respectively and uniformly sown on the soil surfaces of A1, A2 and A3 according to the sowing use amounts of 0.5 ton/mu, 1.0 ton/mu and 1.5 ton/mu, ploughing is carried out after sowing, and water is respectively sprayed on the soil surfaces of A1, A2 and A3 according to the use amounts of 0.2 ton/mu, 0.35 ton/mu and 0.5 ton/mu; then, the soil of A1, A2 and A3 is respectively sown and ploughed at intervals according to the frequency of 10 days/time, 15 days/time and 20 days/time, and the sowing amount and the ploughing water sprinkling amount are kept consistent in the same area; and (4) repeatedly sowing the repairing materials until the repairing materials are all sown and ploughed for 3 times in the three areas, namely sowing to the beginning of 2 months in the area A1, sowing to the middle ten days of 2 months in the area A2 and sowing to the bottom of 3 months in the area A3. The same operations as in zone a1 were used for zone a4, except that no repair material was applied, only plowing and watering, with plowing and watering frequency consistent with zone a 1. Soil samples in each area are reserved and taken according to the operation before sowing, and the results are shown in table 1 according to an environmental monitoring analysis method and a recent generation analysis method of soil elements.
TABLE 1A restoring Effect of mine soil
As can be seen from Table 1, the pH of the soil in zone A before and after the treatment was stabilized in the neutral range. The N, P, K element content in the soil before treatment is low and is lower than the general standard in cultivated soil, specifically, N: 150-200mg/kg, P: 60-100mg/kg, K: 100-150 mg/kg. After treatment, the contents of the three elements in the soil are all improved and reach the general standard. The metal contents of Cd, Cr and Cu in the soil before treatment exceed the standard, so that the metal toxicity in the soil is higher; the Zn content is lower than the standard. After treatment, the content of the overproof metal is reduced and falls into the standard range; the content of the substandard metal is improved, and the soil is improved and repaired. Compared with the repairing effect of the A1 area and the A4 area, the soil repaired by the repairing material of the invention has improved nutrient absorption capacity compared with the soil without the repairing material.
Application example 2
And in the mine area B, the pH of mine soil is 5.3 and is in an acidic range with the pH being less than 6.5. The area of the abandoned mine land is 78 mu, and the soil surface has no vegetation. The B field was divided equally into four parts, B1, B2, B3 and B4 respectively. The soil in each area is sampled and detected, and the sampling method and the analysis and detection method are specifically shown in table 2 according to an environmental monitoring analysis method and a recent generation analysis method of soil elements.
The mine soil remediation material of embodiment 8 of the invention is prepared into a plurality of groups, so that the quantity of the remediation material meets the requirements of a mine area B. The operation is started from the beginning of 1 month in 2018, the mine soil remediation material is uniformly sown on the soil surfaces of B1, B2 and B3 according to the sowing use amounts of 1 ton/mu, 2 ton/mu and 3 ton/mu respectively, ploughing is carried out after sowing, and water is sprayed on the soil surfaces of B1, B2 and B3 according to the use amounts of 0.5 ton/mu, 1 ton/mu and 1.5 ton/mu respectively; then, the soil of B1, B2 and B3 is respectively sown and ploughed at intervals according to the frequency of 10 days/time, 15 days/time and 20 days/time, and the sowing amount and the ploughing water sprinkling amount are kept consistent in the same area; and (4) repeatedly sowing the repairing materials until the repairing materials are all sown and ploughed for 3 times in the three areas, namely sowing to the beginning of 2 months in the area B1, sowing to the middle ten days of 2 months in the area B2 and sowing to the bottom of 3 months in the area B3. The same operations as in zone B1 were used in zone B4, except that no repair material was applied, only plowing and watering, with plowing and watering frequency consistent with zone B1. Soil samples in each area are reserved and taken according to the operation before sowing, and the results are shown in a table 2 according to an environmental monitoring analysis method and a recent generation analysis method of soil elements.
TABLE 2B restoring Effect of mine soil
As can be seen from Table 2, the pH of the soil in zone B was stabilized in the neutral range after the treatment. The N, P, K element content in the soil before treatment is low and all are lower than the general standard in cultivated soil. After treatment, the contents of the three elements in the soil are all improved and reach the general standard. Before treatment, the metal contents of Cd, Cr and Cu in the soil are all overproof, the content of As is higher, and the metal toxicity in the soil is higher; the Zn content is lower than the standard. After treatment, the content of the metals exceeding the standard or higher is reduced and falls into the standard range; the content of the substandard metal is improved, and the soil is improved and repaired. Compared with the repairing effect of the B1 area and the B4 area, the soil repaired by the repairing material of the invention has improved nutrient absorption capacity compared with the soil without the repairing material.
Application example 3
And C, in a mining area, the pH of mine soil is 8, and the pH is in an alkaline range of more than 7.5. The area of the abandoned mine land is 130 mu, and the soil surface has no vegetation. The C field was divided equally into four parts, C1, C2, C3 and C4 respectively. The soil in each area is sampled and detected, and the sampling method and the analysis and detection method are specifically shown in table 3 according to the environmental monitoring analysis method and the recent generation analysis method of soil elements.
The mine soil remediation material of embodiment 13 of the invention is prepared into a plurality of groups, so that the quantity of the remediation material meets the requirements of the mine area C. The operation is started from the beginning of 1 month in 2018, the mine soil remediation material is uniformly sown on the soil surfaces of Cl, C2 and C3 according to the sowing use amounts of 1 ton/mu, 2 ton/mu and 3 ton/mu respectively, ploughing is carried out after sowing, and water is sprayed on the soil surfaces of C1, C2 and C3 according to the use amounts of 0.5 ton/mu, 1 ton/mu and 1.5 ton/mu respectively; then, the soil of C1, C2 and C3 is respectively sown and ploughed at intervals according to the frequency of 10 days/time, 15 days/time and 20 days/time, and the sowing amount and the ploughing water sprinkling amount are kept consistent in the same area; and (4) repeatedly sowing the repairing materials until the repairing materials are all sown and ploughed for 3 times in the three areas, namely sowing to the beginning of 2 months in the area C1, sowing to the middle ten days of 2 months in the area C2 and sowing to the bottom of 3 months in the area C3. The same operations as in zone C1 were used for zone C4, except that no repair material was broadcast, only plowing and watering, with plowing and watering frequency consistent with zone C1. Soil samples in each area are reserved and taken according to the operation before sowing, and the results are shown in a table 3 according to an environmental monitoring analysis method and a recent generation analysis method of soil elements.
TABLE 3C restoring Effect of mine soil
As can be seen from Table 3, the pH of the soil in zone C was stabilized in the neutral range after the treatment. The N, P, K element content in the soil before treatment is low and all are lower than the general standard in cultivated soil. After treatment, the contents of the three elements in the soil are all improved and reach the general standard. The metal contents of Cd, Cr and Cu in the soil before treatment exceed the standard, so that the metal toxicity in the soil is higher; the Zn content is lower than the standard. After treatment, the content of the metals exceeding the standard or higher is reduced and falls into the standard range; the content of the substandard metal is improved, and the soil is improved and repaired.
In each repairing method, the dosage, repairing frequency and repairing time of the repairing material are set according to the concrete condition of the mine soil to be repaired, and the same numerical value is selected for each parameter of the soil with similar properties of the same mine.
The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can modify the embodiments without inventive contribution as required after reading this specification, but only fall within the scope of the claims of the present invention.
Claims (10)
1. The mine soil restoration material is characterized by being prepared from the following raw materials in parts by weight: 30-60 parts of bean dregs stone powder, 25-40 parts of calcium powder, 10-20 parts of sawdust, 10-20 parts of wheat bran, 20-35 parts of grass carbon and 10-25 parts of nano montmorillonite.
2. The mine soil restoration material according to claim 1, wherein the mine soil restoration material is prepared from the following raw materials in parts by weight: 40-50 parts of bean dregs stone powder, 30-35 parts of calcium powder, 12-18 parts of sawdust, 12-18 parts of wheat bran, 25-30 parts of grass carbon and 13-20 parts of nano montmorillonite.
3. The mine soil restoration material according to claim 1, wherein: the calcium powder is calcium sulfate powder and/or calcium carbonate powder.
4. The mine soil restoration material according to claim 1, wherein the mine soil restoration material is prepared from the following raw materials in parts by weight: 30-60 parts of bean dregs stone powder, 25-40 parts of calcium powder, 10-20 parts of sawdust, 10-20 parts of wheat bran, 20-35 parts of grass carbon, 10-25 parts of nano montmorillonite, 30-50 parts of hydrated lime and 15-25 parts of calcium silicate.
5. The mine soil restoration material according to claim 4, wherein the mine soil restoration material is prepared from the following raw materials in parts by weight: 35-55 parts of bean dregs stone powder, 30-35 parts of calcium powder, 12-18 parts of sawdust, 12-18 parts of wheat bran, 25-30 parts of grass carbon, 15-20 parts of nano-montmorillonite, 35-45 parts of hydrated lime and 18-22 parts of calcium silicate.
6. The mine soil restoration material according to claim 1, wherein the mine soil restoration material is prepared from the following raw materials in parts by weight: 30-60 parts of bean dregs stone powder, 25-40 parts of calcium powder, 10-20 parts of sawdust, 10-20 parts of wheat bran, 20-35 parts of grass peat, 10-25 parts of nano montmorillonite and 30-50 parts of coal humic acid.
7. The mine soil restoration material according to claim 6, wherein the mine soil restoration material is prepared from the following raw materials in parts by weight: 35-50 parts of bean dregs stone powder, 30-35 parts of calcium powder, 13-17 parts of sawdust, 13-17 parts of wheat bran, 25-30 parts of grass carbon, 15-20 parts of nano montmorillonite and 35-45 parts of coal humic acid.
8. The mine soil remediation method is characterized by comprising the following operation steps: uniformly spreading the mine soil restoration material of any one of claims 1 to 3 on the surface of mine soil with pH of 6.5-7.5, wherein the spreading amount is 0.5-1.5 ton/mu, and ploughing after spreading; sowing and plowing at intervals according to the frequency of 10-20 days/time; sprinkling water to the soil according to the dosage of 0.2-0.5 ton/mu once ploughing; the repair time is 1-3 months.
9. The mine soil remediation method is characterized by comprising the following operation steps: uniformly spreading the mine soil restoration material of claim 4 or 5 on the surface of mine soil with pH less than 6.5 at a spreading amount of 1-3 tons/mu, and ploughing after spreading; sowing and plowing at intervals according to the frequency of 10-20 days/time; sprinkling water to the soil according to the dosage of 0.5-1.5 tons/mu every turn over once; the repair time is 1-3 months.
10. The mine soil remediation method is characterized by comprising the following operation steps: uniformly spreading the mine soil restoration material of claim 6 or 7 on the surface of mine soil with pH of more than 7.5 at a spreading amount of 1-3 tons/mu, and ploughing after spreading; sowing and plowing at intervals according to the frequency of 10-20 days/time; sprinkling water to the soil according to the dosage of 0.5-1.5 tons/mu every turn over once; the repair time is 1-3 months.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910972414.3A CN110746239A (en) | 2019-10-14 | 2019-10-14 | Mine soil restoration method and restoration material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910972414.3A CN110746239A (en) | 2019-10-14 | 2019-10-14 | Mine soil restoration method and restoration material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110746239A true CN110746239A (en) | 2020-02-04 |
Family
ID=69278230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910972414.3A Pending CN110746239A (en) | 2019-10-14 | 2019-10-14 | Mine soil restoration method and restoration material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110746239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111495959A (en) * | 2020-03-24 | 2020-08-07 | 张丽妹 | Soil remediation process utilizing humic acid |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6423531B1 (en) * | 1999-11-17 | 2002-07-23 | Geovation Technologies, Inc. | Advanced organic-inorganic solid-chemical composition and methods for anaerobic bioremediation |
| CN1830587A (en) * | 2005-09-16 | 2006-09-13 | 上海文绿生物科技有限公司 | Modifier used for soil pollution treatment and soil natural activity restoring and its formulation |
| CN104046364A (en) * | 2014-05-30 | 2014-09-17 | 青岛辰青信息技术有限公司 | Modifier applied to soil |
| CN104529668A (en) * | 2014-11-21 | 2015-04-22 | 吉首大学 | Metal mine soil conditioner, and mine ecological remediation method using metal mine soil conditioner. |
| CN106010576A (en) * | 2016-07-13 | 2016-10-12 | 湖南泰谷生物科技股份有限公司 | Composite soil conditioner and application thereof |
| CN106381149A (en) * | 2016-08-15 | 2017-02-08 | 大连地拓重工有限公司 | Restoration amendment for heavy metal-contaminated soil of metal mine |
| CN106947495A (en) * | 2017-04-28 | 2017-07-14 | 明光市飞洲新材料有限公司 | A kind of efficient soil-repairing agent and preparation method thereof |
| CN108059958A (en) * | 2018-01-02 | 2018-05-22 | 湖南金旅环保股份有限公司 | A kind of antimony pollution place soil stabilization renovation agent and preparation method thereof |
| CN108889773A (en) * | 2018-05-29 | 2018-11-27 | 深圳文科园林股份有限公司 | A kind of cadmium pollution mine soil renovation agent and preparation and application method |
| KR101931903B1 (en) * | 2018-02-08 | 2018-12-21 | 한국남부발전 주식회사 | A composite for solidification of heavy metal ions of abandoned mines by using fly ash and bottom ash from fluidized-bed boiler with a large amount of free-CaO |
-
2019
- 2019-10-14 CN CN201910972414.3A patent/CN110746239A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6423531B1 (en) * | 1999-11-17 | 2002-07-23 | Geovation Technologies, Inc. | Advanced organic-inorganic solid-chemical composition and methods for anaerobic bioremediation |
| CN1830587A (en) * | 2005-09-16 | 2006-09-13 | 上海文绿生物科技有限公司 | Modifier used for soil pollution treatment and soil natural activity restoring and its formulation |
| CN104046364A (en) * | 2014-05-30 | 2014-09-17 | 青岛辰青信息技术有限公司 | Modifier applied to soil |
| CN104529668A (en) * | 2014-11-21 | 2015-04-22 | 吉首大学 | Metal mine soil conditioner, and mine ecological remediation method using metal mine soil conditioner. |
| CN106010576A (en) * | 2016-07-13 | 2016-10-12 | 湖南泰谷生物科技股份有限公司 | Composite soil conditioner and application thereof |
| CN106381149A (en) * | 2016-08-15 | 2017-02-08 | 大连地拓重工有限公司 | Restoration amendment for heavy metal-contaminated soil of metal mine |
| CN106947495A (en) * | 2017-04-28 | 2017-07-14 | 明光市飞洲新材料有限公司 | A kind of efficient soil-repairing agent and preparation method thereof |
| CN108059958A (en) * | 2018-01-02 | 2018-05-22 | 湖南金旅环保股份有限公司 | A kind of antimony pollution place soil stabilization renovation agent and preparation method thereof |
| KR101931903B1 (en) * | 2018-02-08 | 2018-12-21 | 한국남부발전 주식회사 | A composite for solidification of heavy metal ions of abandoned mines by using fly ash and bottom ash from fluidized-bed boiler with a large amount of free-CaO |
| CN108889773A (en) * | 2018-05-29 | 2018-11-27 | 深圳文科园林股份有限公司 | A kind of cadmium pollution mine soil renovation agent and preparation and application method |
Non-Patent Citations (6)
| Title |
|---|
| 廖润华 等: "《环境治理功能材料》", 30 April 2017, 中国建材工业出版社 * |
| 张其仔 等: "《新兴产业和高新技术现状与前景研究丛书：环保产业现状与发展前景》", 31 May 2015, 广东经济出版社 * |
| 张忠平 等: "《现代农业与科技创新：华东六省一市农学会2008年学术论文集》", 31 March 2008, 江西科学技术出版社 * |
| 李富平 等: "《金属矿山清洁生产技术》", 31 May 2012, 冶金工业出版社 * |
| 金浚 等: "《森林沼泽区矿产资源地球化学勘查技术方法研究》", 31 March 2012, 地质出版社 * |
| 陈志良 等: "《土壤砷的地球化学行为及稳定化修复》", 30 November 2018, 中国环境出版集团 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111495959A (en) * | 2020-03-24 | 2020-08-07 | 张丽妹 | Soil remediation process utilizing humic acid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107603632B (en) | Inorganic-organic composite soil conditioner and application thereof | |
| CN105802637A (en) | Soil heavy metal passivator, preparation method thereof, and passivation method thereof on soil cadmium | |
| CN110547065B (en) | Method for improving saline-alkali soil by using composite waste | |
| CN108130087A (en) | A kind of soil conditioner and application process for repairing cadmium-arsenic combined pollution | |
| CN107350281A (en) | One kind is applied to northern farmland soil of sewage irrigation area passivator and its application process | |
| CN104788265A (en) | Saline-alkali soil biological improved fertilizer based on high-sulfur gangue and preparation method thereof | |
| CN106318395A (en) | Acid soil conditioner and preparation method and application thereof | |
| CN105061114A (en) | Farmland heavy metal contaminated soil compound modifying agent and preparation method and application method thereof | |
| CN103131424A (en) | Saline alkali soil conditioner | |
| CN106424115A (en) | In-situ passivation remediation method for cadmium polluted rice soil | |
| CN107182509B (en) | Method for promoting organization of saline-alkali barren soil by utilizing compound microorganisms | |
| CN104893732A (en) | Remediation agent S-PbCd for remediating heavy metal Pb-Cd combined contaminated soil as well as preparation method and use method thereof | |
| CN105001020A (en) | Compound mixing fertilizer having heavy metal passivation effect, preparation method and uses thereof | |
| CN112239671A (en) | Passivator for arsenic and cadmium compound polluted farmland and use method thereof | |
| CN105950166A (en) | Ecological soil conditioner capable of improving acid soil and preparation method | |
| CN114192565A (en) | Novel method for repairing heavy metal cadmium, arsenic, mercury, lead and chromium composite contaminated soil | |
| KR20110064557A (en) | The bed soils for using landscape architecture and manufacturing mathod thereof | |
| CN108794177A (en) | A kind of tea garden soil modifying agent and its application | |
| CN108774531A (en) | A kind of renovation agent and preparation method thereof for administering alkaline cadmium pollution soil | |
| CN101724406A (en) | Secondary salinization soil medlar special modifier and method for processing same | |
| Thi et al. | Sandy soil reclamation using biochar and clay-rich soil | |
| CN110746239A (en) | Mine soil restoration method and restoration material | |
| CN113248333A (en) | Granular soil conditioner for composite heavy metal pollution and preparation method thereof | |
| CN108821843A (en) | Conditioner and its preparation and application for the Farmland contamination reparation of mining area periphery | |
| CN108383620A (en) | A kind of bamboo Biochar base soil modifier and the preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200204 |
|
| RJ01 | Rejection of invention patent application after publication |