CN114147062A - Soil bioremediation method - Google Patents
Soil bioremediation method Download PDFInfo
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- CN114147062A CN114147062A CN202111451286.1A CN202111451286A CN114147062A CN 114147062 A CN114147062 A CN 114147062A CN 202111451286 A CN202111451286 A CN 202111451286A CN 114147062 A CN114147062 A CN 114147062A
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- 239000002689 soil Substances 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 238000005507 spraying Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 241001233061 earthworms Species 0.000 claims abstract description 12
- 239000003337 fertilizer Substances 0.000 claims abstract description 12
- 230000008439 repair process Effects 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 230000007480 spreading Effects 0.000 claims abstract description 4
- 210000003608 fece Anatomy 0.000 claims description 16
- 239000010871 livestock manure Substances 0.000 claims description 16
- 244000063299 Bacillus subtilis Species 0.000 claims description 8
- 235000014469 Bacillus subtilis Nutrition 0.000 claims description 8
- 241000283690 Bos taurus Species 0.000 claims description 8
- 241001494479 Pecora Species 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- 241000894006 Bacteria Species 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 5
- 235000009566 rice Nutrition 0.000 claims description 5
- 241000589291 Acinetobacter Species 0.000 claims description 4
- 241000193749 Bacillus coagulans Species 0.000 claims description 4
- 241000196324 Embryophyta Species 0.000 claims description 4
- 241000186660 Lactobacillus Species 0.000 claims description 4
- 241000191938 Micrococcus luteus Species 0.000 claims description 4
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 4
- 241000607598 Vibrio Species 0.000 claims description 4
- 229940054340 bacillus coagulans Drugs 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000003344 environmental pollutant Substances 0.000 claims description 4
- 229940039696 lactobacillus Drugs 0.000 claims description 4
- 231100000719 pollutant Toxicity 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000010902 straw Substances 0.000 claims description 4
- 238000011835 investigation Methods 0.000 claims description 3
- 238000003900 soil pollution Methods 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000005067 remediation Methods 0.000 abstract description 14
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 241001524109 Dietzia Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 241000361919 Metaphire sieboldi Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000000447 pesticide residue Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Mycology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a soil bioremediation method, which comprises the following steps: s1, investigating and analyzing the condition of the polluted soil on site; s2, spreading the biological fertilizer on the surface of the soil, and then ploughing the polluted soil by using a rotary cultivator; s3, blending the mixture, and uniformly dispersing the mixture on the surface of the ploughed soil; s4, ploughing and leveling the polluted soil by using the rotary cultivator again; s5, digging a pit on the soil surface, and backfilling the pit after earthworms are placed in the pit; s6, spraying water to the soil; s7, paving a sunshade net on the soil surface, and then spraying water for the second time; s8, lifting the sunshade net after every 30-60 days, spraying the mixture again, ploughing the soil, leveling, laying the sunshade net, and spraying water until the repair is finished. The invention relates to the technical field of environmental protection, and the soil bioremediation method can not damage and pollute the natural environment in the remediation process, accords with the soil environmental protection remediation concept, and has higher sustainable development.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a soil bioremediation method.
Background
Agricultural farmland in China is forced to pursue high yield per mu, and chemical fertilizers and pesticides are used in ultra-large amount. The soil is seriously polluted, pesticide residues and harmful metals exceed the standard, the soil is hardened, soil pores are blocked, the water permeability and the air permeability of the soil are influenced, nutrient elements are limited from entering a soil solution from soil particles, the soil fertility is reduced, and organic matter is lost to commonly exist soil-borne diseases; crops cultivated by the soil are inevitable and serious in pollution, and harm to food safety and the health of the masses.
At present, the soil remediation method mainly comprises the following steps: physical repair methods, chemical repair methods, biological repair methods, and the like. The physical repair method has large engineering quantity and fund quantity, high risk coefficient of environmental pollution and easy generation of secondary pollution; the chemical repair method has high cost; the bioremediation method is to utilize indigenous microorganisms in the soil or additional dominant microorganisms to rapidly decompose organic pollutants in the soil under certain environmental conditions, and has the advantages of low cost, good treatment effect, no secondary pollution and the like. Based on the reasons, the invention designs the soil remediation method by using the earthworm to cooperate with the biological method, the soil remediation effect is good, the natural environment cannot be damaged and polluted in the remediation process, the method conforms to the concept of soil environmental protection remediation, and the sustainable development performance is higher.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a soil bioremediation method which has good soil remediation effect, does not damage and pollute the natural environment in the remediation process, conforms to the concept of soil environmental protection remediation and has higher sustainable development.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a soil bioremediation method comprising the steps of:
s1, carrying out on-site investigation and analysis on the condition of the polluted soil, including the soil pollution degree, the pollutants and the pollution range;
s2, spreading the biological fertilizer on the surface of the soil, and then ploughing the polluted soil by using a rotary cultivator;
s3, blending the mixture, and uniformly dispersing the mixture on the surface of the ploughed soil;
s4, ploughing and leveling the polluted soil by using the rotary cultivator again;
s5, digging a pit on the soil surface, and backfilling the pit after earthworms are placed in the pit;
s6, spraying water to the soil;
s7, paving a sunshade net on the soil surface, and then spraying water for the second time;
s8, lifting the sunshade net after every 30-60 days, spraying the mixture again, ploughing the soil, leveling, laying the sunshade net, and spraying water until the repair is finished.
Preferably, the biological fertilizer in the step S2 is composed of the following raw materials in parts by weight: 3-10 parts of rice bran, 10-15 parts of sawdust, 5-10 parts of straws, 3-15 parts of dead tree leaves, 15-30 parts of horse and cattle manure, 20-40 parts of pig and sheep manure, 10-20 parts of weeds and 20-40 parts of incineration soil.
Preferably, the mixture in step S3 is composed of the following substances in parts by mass: 4-10 parts of soil yeast, 1-5 parts of dizhe bacteria, 0.5-3 parts of micrococcus luteus, 1-3 parts of acinetobacter, 3-6 parts of bacillus subtilis, 1-5 parts of bacillus coagulans, 3-8 parts of vibrio desulfurates, 0.3-3 parts of sulfate reducing bacteria, 4-9 parts of lactobacillus, 5-10 parts of bacillus subtilis and 3-10 parts of water-retaining agent.
Preferably, in step S5, the pits have a length of 60-100cm, a width of 20-40cm, and a depth of 8-20cm, the distance between the pits in the length direction is 2-4 m, the distance between the pits in the width direction is 1-2 m, and the pits are staggered.
Preferably, in the step S5, the number of earthworms in each pit is 300-1200 earthworms.
Preferably, the horse and cattle manure and the pig and sheep manure are used after being stacked and fermented.
Preferably, the repair is carried out at ambient temperatures of 10 ℃ to 34 ℃.
Preferably, the soil moisture is maintained at 20% -40% during the remediation process.
(III) advantageous effects
The invention provides a soil bioremediation method. The method has the following beneficial effects:
(1) by introducing the biological fertilizer and the mixture into the soil, the biological fertilizer provides nutrients for the growth of microorganisms on one hand to promote the propagation of the microorganisms in the soil and promote the degradation of pollutants in the soil, so that a good soil remediation effect is obtained, and meanwhile, rice bran, sawdust and the like contained in the biological fertilizer are beneficial to keeping the soil in a loose state;
(2) the earthworms are introduced into the soil, so that the thoroughness and the high efficiency of soil remediation are improved by using the earthworms, and the environment-friendly ecological remediation concept is met.
Drawings
FIG. 1 is a schematic diagram of the distribution of pits in 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.
The first embodiment is as follows:
referring to fig. 1, the present invention provides a technical solution: a soil bioremediation method comprising the steps of:
s1, carrying out on-site investigation and analysis on the condition of the polluted soil, including the soil pollution degree, the pollutants and the pollution range;
s2, spreading the biological fertilizer on the surface of the soil, and then ploughing the polluted soil by using a rotary cultivator;
s3, blending the mixture, and uniformly dispersing the mixture on the surface of the ploughed soil;
s4, ploughing and leveling the polluted soil by using the rotary cultivator again;
s5, digging a pit on the soil surface, and backfilling the pit after earthworms are placed in the pit;
s6, spraying water to the soil;
s7, paving a sunshade net on the soil surface, and then spraying water for the second time;
and S8, lifting the sunshade net after every 30 days, spraying the mixture again, ploughing the soil, leveling, laying the sunshade net, and spraying water until the repair is finished.
The biological fertilizer in the step S2 is prepared from the following raw materials in parts by weight: 3 parts of rice bran, 10 parts of sawdust, 5 parts of straws, 3 parts of dead tree leaves, 15 parts of horse and cattle manure, 20 parts of pig and sheep manure, 10 parts of weeds and 20 parts of incineration soil.
The mixture in the step S3 is composed of the following substances in parts by mass: 4 parts of soil yeast, 1 part of dietzia, 0.5 part of micrococcus luteus, 1 part of acinetobacter, 3 parts of bacillus subtilis, 1 part of bacillus coagulans, 3 parts of vibrio devulcani, 0.3 part of sulfate reducing bacteria, 4 parts of lactobacillus, 5 parts of bacillus subtilis and 3 parts of water-retaining agent.
In step S5, the pits have a length of 60cm, a width of 20cm and a depth of 8cm, the distance between the pits in the length direction is 2 meters, the distance between the pits in the width direction is 1 meter, and the pits are staggered.
In step S5, the number of earthworms in each pit is 300.
The horse and cattle manure and the pig and sheep manure are used after being stacked and fermented.
The repair was carried out at an ambient temperature of 10 ℃.
The soil moisture is kept at 20% in the repairing process.
Example two:
the first difference from the embodiment is that:
and after every 60 days, lifting the sunshade net, spraying the mixture again, ploughing the soil, leveling, finally paving the sunshade net, and spraying water until the restoration is finished.
The biological fertilizer in the step S2 is prepared from the following raw materials in parts by weight: 10 parts of rice bran, 15 parts of sawdust, 10 parts of straws, 15 parts of dead tree leaves, 30 parts of horse and cattle manure, 40 parts of pig and sheep manure, 20 parts of weeds and 40 parts of incineration soil.
The mixture in the step S3 is composed of the following substances in parts by mass: 10 parts of soil yeast, 5 parts of dietzia, 3 parts of micrococcus luteus, 3 parts of acinetobacter, 6 parts of bacillus subtilis, 5 parts of bacillus coagulans, 8 parts of vibrio desulfurizatus, 3 parts of sulfate reducing bacteria, 9 parts of lactobacillus, 10 parts of bacillus subtilis and 10 parts of water-retaining agent.
In step S5, the pits have a length of 100cm, a width of 40cm, and a depth of 20cm, the distance between the pits in the length direction is 4 meters, the distance between the pits in the width direction is 2 meters, and the pits are staggered.
In step S5, the number of earthworms in each pit is 1200.
The horse and cattle manure and the pig and sheep manure are used after being stacked and fermented.
The repair was carried out at an ambient temperature of 34 ℃.
The soil moisture is kept at 40% in the repairing process.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.
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 soil bioremediation method is characterized in that: the method comprises the following steps:
s1, carrying out on-site investigation and analysis on the condition of the polluted soil, including the soil pollution degree, the pollutants and the pollution range;
s2, spreading the biological fertilizer on the surface of the soil, and then ploughing the polluted soil by using a rotary cultivator;
s3, blending the mixture, and uniformly dispersing the mixture on the surface of the ploughed soil;
s4, ploughing and leveling the polluted soil by using the rotary cultivator again;
s5, digging a pit on the soil surface, and backfilling the pit after earthworms are placed in the pit;
s6, spraying water to the soil;
s7, paving a sunshade net on the soil surface, and then spraying water for the second time;
s8, lifting the sunshade net after every 30-60 days, spraying the mixture again, ploughing the soil, leveling, laying the sunshade net, and spraying water until the repair is finished.
2. A soil bioremediation method according to claim 1, wherein: the biological fertilizer in the step S2 is prepared from the following raw materials in parts by weight: 3-10 parts of rice bran, 10-15 parts of sawdust, 5-10 parts of straws, 3-15 parts of dead tree leaves, 15-30 parts of horse and cattle manure, 20-40 parts of pig and sheep manure, 10-20 parts of weeds and 20-40 parts of incineration soil.
3. A soil bioremediation method according to claim 1, wherein: the mixture in the step S3 is composed of the following substances in parts by mass: 4-10 parts of soil yeast, 1-5 parts of dizhe bacteria, 0.5-3 parts of micrococcus luteus, 1-3 parts of acinetobacter, 3-6 parts of bacillus subtilis, 1-5 parts of bacillus coagulans, 3-8 parts of vibrio desulfurates, 0.3-3 parts of sulfate reducing bacteria, 4-9 parts of lactobacillus, 5-10 parts of bacillus subtilis and 3-10 parts of water-retaining agent.
4. A soil bioremediation method according to claim 1, wherein: in the step S5, the pits have a length of 60-100cm, a width of 20-40cm and a depth of 8-20cm, the distance between the pits in the length direction is 2-4 m, the distance between the pits in the width direction is 1-2 m, and the pits are staggered.
5. A soil bioremediation method according to claim 1, wherein: in step S5, the number of earthworms in each pit is 300-1200 earthworms.
6. A soil bioremediation method according to claim 2, wherein: the horse and cattle manure and the pig and sheep manure are used after being stacked and fermented.
7. A soil bioremediation method according to claim 1, wherein: the repairing is carried out at the ambient temperature of 10-34 ℃.
8. A soil bioremediation method according to claim 1, wherein: the soil moisture is kept between 20 and 40 percent in the repairing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451286.1A CN114147062A (en) | 2021-12-01 | 2021-12-01 | Soil bioremediation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111451286.1A CN114147062A (en) | 2021-12-01 | 2021-12-01 | Soil bioremediation method |
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| CN114147062A true CN114147062A (en) | 2022-03-08 |
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| CN202111451286.1A Pending CN114147062A (en) | 2021-12-01 | 2021-12-01 | Soil bioremediation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116274340A (en) * | 2023-02-17 | 2023-06-23 | 陕西中天华宸建筑设计研究院有限公司 | Treatment method for restoring greening soil |
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|---|---|---|---|---|
| CN104289507A (en) * | 2014-10-21 | 2015-01-21 | 苗庆龄 | Remediation method for treating severe heavy metal contaminated soil by utilizing animals |
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Application publication date: 20220308 |