CN112108514A - Method for restoring soil for planting gardens - Google Patents
Method for restoring soil for planting gardens Download PDFInfo
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- CN112108514A CN112108514A CN201910908532.8A CN201910908532A CN112108514A CN 112108514 A CN112108514 A CN 112108514A CN 201910908532 A CN201910908532 A CN 201910908532A CN 112108514 A CN112108514 A CN 112108514A
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- soil
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- remediation
- loosening agent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mycology (AREA)
- Soil Sciences (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Botany (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a method for restoring soil for planting gardens, which comprises the following steps: 1. sampling: extracting a soil sample by using a sampler, and analyzing soil components to make a repair plan; 2. preparing a soil remediation solution: the soil remediation agent comprises 30-40 wt% of calcium hydroxy phosphate, 45-50 wt% of biochar and 15-20 wt% of sodium bentonite; 3. preparing a soil loosening agent: the soil loosening agent consists of the following raw materials in parts by weight: 6-12 parts of traditional Chinese medicine residues, 8-16 parts of sawdust, 5-10 parts of rice husk carbon, 6-12 parts of decomposed organic matters and 3-8 parts of perlite; 4. land preparation: digging the land, spraying a soil loosening agent on the land, deeply ploughing the soil by 30-50cm, fully mixing the soil and the loosening agent, standing the mixture for 5-7 days, spraying a soil repairing solution on the land, deeply ploughing the soil by 30-50cm, and standing the mixture to complete soil repairing. The invention combines chemical remediation and biological remediation, jointly acts on the polluted soil, reduces the content of heavy metal pollutants in the soil, and improves the soil structure.
Description
Technical Field
The invention relates to the technical field of soil improvement, in particular to a method for repairing soil for planting gardens.
Background
Soil is an important resource for the natural environment and agriculture of human life, and the global grain, resource and environmental problems are closely related to soil. However, with the continuous acceleration of the industrialization, rural intensification and urbanization process in China, the polluted soil area is continuously enlarged, and the problem of soil pollution is increasingly serious.
Soil pollutants can be broadly classified into two broad categories, inorganic pollutants and organic pollutants. The inorganic pollutants mainly comprise acid, alkali, heavy metal, salts, compounds of radioactive elements cesium and strontium, compounds containing arsenic, selenium and fluorine, and the like. The organic pollutants mainly comprise organic pesticides, phenols, cyanides, petroleum, synthetic detergents, 3, 4-benzopyrene, harmful microorganisms brought by municipal sewage, sludge and animal manure, and the like.
According to 2014, the national soil pollution condition survey bulletin shows that the national soil total pollution standard exceeding rate is 16.1%. Soil contamination not only seriously affects soil quality and land productivity, but also can infiltrate down contaminated groundwater through leaching and pose a threat to human and animal and plant health along with the food chain. In particular, the heavy metals cause soil pollution, the harm is large, and the treatment difficulty is large. Therefore, the research on the remediation technology of the heavy metal contaminated soil gradually becomes one of the hot spots of the research in China.
At present, the treatment methods of the heavy metals in the soil mainly comprise physical, chemical-physical and biological methods and the like. The development of the soil remediation method which can remove heavy metal pollutants in soil and improve soil nutrients is of great significance.
Disclosure of Invention
The invention aims to provide a method for restoring soil for planting gardens.
A method for restoring soil for planting gardens comprises the following steps:
(1) sampling: extracting a soil sample through a sampler, analyzing soil components and making a repair plan;
(2) preparing a soil remediation solution: the soil remediation agent comprises 30-40 wt% of calcium hydroxy phosphate, 45-50 wt% of biochar and 15-20 wt% of sodium bentonite;
(3) preparing a soil loosening agent: the soil loosening agent is composed of the following raw materials in parts by weight: 6-12 parts of traditional Chinese medicine residues, 8-16 parts of sawdust, 5-10 parts of rice husk carbon, 6-12 parts of decomposed organic matters and 3-8 parts of perlite;
(4) land preparation: digging the land, spraying a soil loosening agent on the land, deeply ploughing the soil by 30-50cm, fully mixing, standing for 5-7 days, spraying a soil repairing liquid on the land, deeply ploughing the soil by 30-50cm, fully mixing, and standing to complete soil repair.
Preferably, the biochar is solid powder with the particle size of below 2mm, which is obtained by taking straws and/or manure as raw materials, performing vacuum pyrolysis for 50-60 min at the pyrolysis temperature of 330-350 ℃, and grinding.
Preferably, the decomposed organic matter in the step (3) is obtained by the following method: adding water accounting for 65-75% of the weight of the sawdust and the rice bran in any proportion, storing for 10-12 hours, and sterilizing in a steam environment at 130-; adjusting the pH value of the culture medium to 4, adding wood-rotting fungi with the addition amount of 1-2% of the total amount of the wood chips and the rice bran, and fermenting for 8-15 days at 28-32 ℃ in a dark condition to obtain rotted organic matters.
Preferably, the rice husk carbon in the step (3) is a solid byproduct obtained by gasifying rice husks at 600-680 ℃ under the condition of limited oxygen supply.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the soil remediation method disclosed by the invention combines chemical remediation and biological remediation, and jointly acts on the contaminated soil, so that the content of heavy metal pollutants in the soil is reduced, the soil structure is improved, the pH value and the chemical and physical properties are adjusted, the sediments and organic matters in the soil are decomposed, and the soil remediation effect is finally achieved;
2. the method is a restoration method which can restore alkaline soil, reduce the alkalinity of the soil, improve the soil properties, loosen the soil, increase the soil fertility, gradually improve the soil alkalization phenomenon, reduce the alkalinity of the soil, sterilize and increase the soil fertility, and has the functions of both an alkaline soil conditioner and increment and synergism.
Detailed Description
The present invention will be described in further detail below.
The invention discloses a method for restoring soil for planting gardens, which comprises the following steps in sequence:
(1) sampling: extracting a soil sample through a sampler, analyzing soil components and making a repair plan;
(2) preparing a soil remediation solution: the soil remediation agent comprises 30-40 wt% of calcium hydroxy phosphate, 45-50 wt% of biochar and 15-20 wt% of sodium bentonite;
(3) preparing a soil loosening agent: the soil loosening agent is composed of the following raw materials in parts by weight: 6-12 parts of traditional Chinese medicine residues, 8-16 parts of sawdust, 5-10 parts of rice husk carbon, 6-12 parts of decomposed organic matters and 3-8 parts of perlite;
(4) land preparation: digging the land, spraying a soil loosening agent on the land, deeply ploughing the soil by 30-50cm, fully mixing, standing for 5-7 days, spraying a soil repairing liquid on the land, deeply ploughing the soil by 30-50cm, fully mixing, and standing to complete soil repair.
The biochar is prepared by taking straws and/or manure as raw materials, performing vacuum pyrolysis for 50-60 min at the pyrolysis temperature of 330-350 ℃, and grinding to obtain solid powder with the particle size of below 2 mm.
The decomposed organic matter in the step (3) is obtained by the following method: adding water accounting for 65-75% of the weight of the sawdust and the rice bran in any proportion, storing for 10-12 hours, and sterilizing in a steam environment at 130-; adjusting the pH value of the culture medium to 4, adding wood-rotting fungi with the addition amount of 1-2% of the total amount of the wood chips and the rice bran, and fermenting for 8-15 days at 28-32 ℃ in a dark condition to obtain rotted organic matters.
The rice husk carbon in the step (3) is a solid byproduct obtained by gasifying rice husks at 600-680 ℃ under the condition of limited oxygen supply.
The soil remediation method disclosed by the invention combines chemical remediation and biological remediation, and jointly acts on the contaminated soil, so that the content of heavy metal pollutants in the soil is reduced, the soil structure is improved, the pH value and the chemical and physical properties are adjusted, the sediments and organic matters in the soil are decomposed, and the soil remediation effect is finally achieved; the method is a restoration method which can restore alkaline soil, reduce the alkalinity of the soil, improve the soil properties, loosen the soil, increase the soil fertility, gradually improve the soil alkalization phenomenon, reduce the alkalinity of the soil, sterilize and increase the soil fertility, and has the functions of both an alkaline soil conditioner and increment and synergism.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (4)
1. A restoration method for soil for planting gardens is characterized in that: comprises the following steps in sequence:
(1) sampling: extracting a soil sample through a sampler, analyzing soil components and making a repair plan;
(2) preparing a soil remediation solution: the soil remediation agent comprises 30-40 wt% of calcium hydroxy phosphate, 45-50 wt% of biochar and 15-20 wt% of sodium bentonite;
(3) preparing a soil loosening agent: the soil loosening agent is composed of the following raw materials in parts by weight: 6-12 parts of traditional Chinese medicine residues, 8-16 parts of sawdust, 5-10 parts of rice husk carbon, 6-12 parts of decomposed organic matters and 3-8 parts of perlite;
(4) land preparation: digging the land, spraying a soil loosening agent on the land, deeply ploughing the soil by 30-50cm, fully mixing, standing for 5-7 days, spraying a soil repairing liquid on the land, deeply ploughing the soil by 30-50cm, fully mixing, and standing to complete soil repair.
2. The method for remediating soil for planting gardens as claimed in claim 1, wherein: the biochar is prepared by taking straws and/or manure as raw materials, performing vacuum pyrolysis for 50-60 min at the pyrolysis temperature of 330-350 ℃, and grinding to obtain solid powder with the particle size of below 2 mm.
3. The method for remediating soil for planting gardens as claimed in claim 1, wherein: the decomposed organic matter in the step (3) is obtained by the following method: adding water accounting for 65-75% of the weight of the sawdust and the rice bran in any proportion, storing for 10-12 hours, and sterilizing in a steam environment at 130-; adjusting the pH value of the culture medium to 4, adding wood-rotting fungi with the addition amount of 1-2% of the total amount of the wood chips and the rice bran, and fermenting for 8-15 days at 28-32 ℃ in a dark condition to obtain rotted organic matters.
4. The method for remediating soil for planting gardens as claimed in claim 1, wherein: the rice husk carbon in the step (3) is a solid byproduct obtained by gasifying rice husks at 600-680 ℃ under the condition of limited oxygen supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910908532.8A CN112108514A (en) | 2019-09-25 | 2019-09-25 | Method for restoring soil for planting gardens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910908532.8A CN112108514A (en) | 2019-09-25 | 2019-09-25 | Method for restoring soil for planting gardens |
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| CN112108514A true CN112108514A (en) | 2020-12-22 |
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| CN201910908532.8A Pending CN112108514A (en) | 2019-09-25 | 2019-09-25 | Method for restoring soil for planting gardens |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008012948A1 (en) * | 2006-07-26 | 2008-01-31 | Nippon Sheet Glass Company, Limited | Methyl aquocobyrinic acid derivative, alkylation composition, and method for detoxifying harmful compound by utilizing the composition |
| CN103817145A (en) * | 2014-03-07 | 2014-05-28 | 深圳市万信达生态环境股份有限公司 | Method for treating farmland soil polluted by cadmium |
| US20150251230A1 (en) * | 2012-09-10 | 2015-09-10 | Universiteit Gent | Treatment of clay or dredged sediment with polymer increases adsorption characteristics |
| CN109220039A (en) * | 2018-09-29 | 2019-01-18 | 广西百乐德农业投资有限公司 | A kind of restorative procedure of basic soil |
| CN109926445A (en) * | 2017-12-19 | 2019-06-25 | 国家电投集团远达环保工程有限公司重庆科技分公司 | A kind of soil remediation method |
-
2019
- 2019-09-25 CN CN201910908532.8A patent/CN112108514A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008012948A1 (en) * | 2006-07-26 | 2008-01-31 | Nippon Sheet Glass Company, Limited | Methyl aquocobyrinic acid derivative, alkylation composition, and method for detoxifying harmful compound by utilizing the composition |
| US20150251230A1 (en) * | 2012-09-10 | 2015-09-10 | Universiteit Gent | Treatment of clay or dredged sediment with polymer increases adsorption characteristics |
| CN103817145A (en) * | 2014-03-07 | 2014-05-28 | 深圳市万信达生态环境股份有限公司 | Method for treating farmland soil polluted by cadmium |
| CN109926445A (en) * | 2017-12-19 | 2019-06-25 | 国家电投集团远达环保工程有限公司重庆科技分公司 | A kind of soil remediation method |
| CN109220039A (en) * | 2018-09-29 | 2019-01-18 | 广西百乐德农业投资有限公司 | A kind of restorative procedure of basic soil |
Non-Patent Citations (1)
| Title |
|---|
| 施维林: "《普通高等院校环境科学与工程类系列规划教材 土壤污染与修复》", 30 June 2018, 中国建材工业出版社 * |
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Application publication date: 20201222 |