CN107321783B - Method for improving lead-polluted soil - Google Patents
Method for improving lead-polluted soil Download PDFInfo
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- CN107321783B CN107321783B CN201710652948.9A CN201710652948A CN107321783B CN 107321783 B CN107321783 B CN 107321783B CN 201710652948 A CN201710652948 A CN 201710652948A CN 107321783 B CN107321783 B CN 107321783B
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- polluted soil
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- 239000002689 soil Substances 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title claims abstract description 45
- 239000000843 powder Substances 0.000 claims abstract description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 230000007480 spreading Effects 0.000 claims abstract description 3
- 238000003892 spreading Methods 0.000 claims abstract description 3
- 210000000988 bone and bone Anatomy 0.000 claims description 43
- 239000002245 particle Substances 0.000 claims description 24
- 239000002994 raw material Substances 0.000 claims description 19
- 241000287828 Gallus gallus Species 0.000 claims description 18
- 238000010298 pulverizing process Methods 0.000 claims description 11
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 9
- 239000004327 boric acid Substances 0.000 claims description 9
- 239000011812 mixed powder Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 235000016425 Arthrospira platensis Nutrition 0.000 claims description 6
- 240000002900 Arthrospira platensis Species 0.000 claims description 6
- 241000199919 Phaeophyceae Species 0.000 claims description 6
- 229910000278 bentonite Inorganic materials 0.000 claims description 6
- 239000000440 bentonite Substances 0.000 claims description 6
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 6
- 229940082787 spirulina Drugs 0.000 claims description 6
- 238000000855 fermentation Methods 0.000 claims description 4
- 230000004151 fermentation Effects 0.000 claims description 4
- 238000009331 sowing Methods 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 230000006872 improvement Effects 0.000 abstract description 17
- 241000282414 Homo sapiens Species 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 239000010409 thin film Substances 0.000 abstract description 4
- 239000011133 lead Substances 0.000 abstract 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 abstract 1
- 239000011574 phosphorus Substances 0.000 abstract 1
- 229910052698 phosphorus Inorganic materials 0.000 abstract 1
- 239000010408 film Substances 0.000 description 20
- 241000251468 Actinopterygii Species 0.000 description 7
- 230000009467 reduction Effects 0.000 description 5
- BOUFUOCPGSCPPN-UHFFFAOYSA-N [Pb].[P].[Cl] Chemical compound [Pb].[P].[Cl] BOUFUOCPGSCPPN-UHFFFAOYSA-N 0.000 description 3
- 238000005067 remediation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 230000005520 electrodynamics Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 231100000739 chronic poisoning Toxicity 0.000 description 1
- 238000012777 commercial manufacturing Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000002249 digestive system Anatomy 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000000777 hematopoietic system Anatomy 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012113 quantitative test Methods 0.000 description 1
- 210000004994 reproductive system Anatomy 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a method for improving lead contaminated soil, which comprises the following steps: s1: ploughing the lead-polluted soil; s2: spreading fishbone powder in the lead polluted soil treated in the step S1; s3: sprinkling water in the lead polluted soil treated in the step S2, and then uniformly mixing; s4: the surface of the lead-contaminated soil treated in step S3 is covered with a thin film, and the lead-contaminated soil covered with the thin film is fermented. The lead and the fishbone powder are combined to generate phosphorus, chlorine and lead which are harmless to human bodies, so that the active lead in the soil is reduced, and the effect of improving the lead-polluted soil is achieved; the improvement method has low cost, strong operability and wide application range.
Description
Technical Field
The invention relates to the technical field of soil improvement, in particular to a method for improving lead-polluted soil.
Background
Soil is the main material base on which human beings rely for survival, but as the activities of mining, smelting, processing and commercial manufacturing of human beings to heavy metals are increasing, heavy metals such as lead enter the soil, and serious environmental pollution is caused. If rice, vegetables and fruits which are seriously polluted by lead are taken for a long time, and water containing excessive cadmium and lead is drunk, chronic poisoning symptoms are easy to appear, the nervous system, the hematopoietic system, the digestive system and the reproductive system of a human body are affected, and the health of the human body is damaged. The existing lead-polluted soil remediation technology mainly comprises a phytoremediation method, an electrodynamic remediation method, a leaching method, a thermal desorption method, a vitrification method, a fixation and stabilization method and the like; among them, the phytoremediation method requires a considerable time and has a problem of plant handling; the electrodynamic remediation is only suitable for small-area pollution and is not easy to operate on site; the leaching method needs to add a surfactant, so that the danger of polluting underground water exists; the thermal desorption method is a method for recovering gas by heating, and is not suitable for field operation, and has the problems of high cost, narrow application range and the like; therefore, there is also a need to develop new lead contamination improvement methods.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method for improving lead-polluted soil, which utilizes the combination of lead and fishbone powder to generate phosphorus-chlorine-lead harmless to human bodies and reduce active lead in the soil, thereby achieving the effect of improving the lead-polluted soil; the improvement method has low cost, strong operability and wide application range.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention provides a method for improving lead contaminated soil, which comprises the following steps: s1: ploughing the lead-polluted soil; s2: spreading fishbone powder in the lead polluted soil treated in the step S1; s3: sprinkling water in the lead polluted soil treated in the step S2, and then uniformly mixing; s4: the surface of the lead-contaminated soil treated in step S3 is covered with a thin film, and the lead-contaminated soil covered with the thin film is fermented. It should be noted that the plastic film only has the functions of heat preservation and moisture preservation, and is suitable for both thickness and thinness; thick and can be recycled.
In a further embodiment of the present invention, in step S4, the fermentation temperature is 32-40 ℃ and the fermentation time is 15-20 days.
In a further embodiment of the present invention, in step S3, the amount of water sprayed is 80-100 g/kg of soil.
In a further embodiment of the present invention, in step S2, the ratio of the mass of fishbone powder to the mass of lead in the soil is (0.1-0.2): 1. In step S1, the plowing is performed by a deep scarification plowing machine, and the plowing depth is 30-40 cm. It should be noted that, the lead-contaminated soil is collected, the lead-contaminated content is detected, and then the actual usage amount of the fishbone powder is calculated according to the ratio of the scattering quality of the fishbone powder to the mass of the lead in the soil.
In a further embodiment of the present invention, in step S2, the fishbone powder is obtained by pulverizing fishbone to have a particle size of less than 0.1 mm.
In a further embodiment of the present invention, in step S2, the raw material components of the fishbone powder include, by weight: 40-50 parts of fishbone, 3-5 parts of chicken bone, 10-12 parts of pig bone and 1-2 parts of boric acid.
In a further embodiment of the present invention, in step S2, the raw material composition of the fishbone powder further comprises: 5-7 parts of spirulina powder, 2-3 parts of bentonite and 1-2 parts of brown algae powder.
In a further embodiment of the present invention, in step S2, the method for preparing fish bone powder comprises the steps of: pulverizing fishbone, chicken bone and pig bone to obtain mixed powder with particle size less than 0.1mm, adding other rest raw materials, and mixing to obtain fishbone powder.
In a further embodiment of the present invention, the method of step S1 to step S4 is cyclically modified a plurality of times according to actual needs.
The technical scheme provided by the invention has the following beneficial effects: (1) the method improves the lead-polluted soil by adopting the fishbone powder, utilizes the combination of lead and the fishbone powder to generate phosphorus-chlorine-lead which is harmless to human bodies, reduces the active lead in the soil, and thus achieves the improvement effect; (2) the method for improving the lead-polluted soil provided by the invention has the advantages of low cost, strong operability and wide application range.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
The experimental procedures in the following examples are conventional unless otherwise specified. The test materials used in the following examples were purchased from a conventional store unless otherwise specified. In the quantitative tests in the following examples, three replicates were set, and the data are the mean or the mean ± standard deviation of the three replicates.
The invention provides a method for improving lead contaminated soil, which comprises the following steps:
s1: ploughing the lead polluted soil by adopting a deep scarification plough, wherein the ploughing depth is 30-40 cm;
s2: scattering fishbone powder with the particle size smaller than 0.1mm in the lead-polluted soil treated in the step S1, wherein the ratio of the scattering mass of the fishbone powder to the mass of lead in the soil is (0.1-0.2): 1;
wherein the fishbone powder is obtained by pulverizing fishbone to obtain fishbone powder with particle size less than 0.1 mm; or the fishbone powder comprises the following raw material components in parts by weight: 40-50 parts of fishbone, 3-5 parts of chicken bone, 10-12 parts of pig bone and 1-2 parts of boric acid, preferably, 5-7 parts of spirulina powder, 2-3 parts of bentonite and 1-2 parts of brown algae powder, and the preparation method of the fishbone powder comprises the following steps: pulverizing fishbone, chicken bone and pig bone to obtain mixed powder with particle size less than 0.1mm, adding other rest raw materials, and mixing to obtain fishbone powder;
s3: sprinkling water into the lead-polluted soil treated in the step S2, wherein the sprinkling water amount is 80-100 g/kg of soil, and then uniformly mixing;
s4: and covering a film on the surface of the lead polluted soil treated in the step S3, and fermenting the lead polluted soil covered by the film at the temperature of 32-40 ℃ for 15-20 days.
The method for improving lead-contaminated soil according to the present invention will be further described with reference to the following specific examples.
Example one
The embodiment provides an improvement method of lead-contaminated soil, which comprises the following steps:
s1: ploughing the lead polluted soil by adopting a deep scarification plough, wherein the ploughing depth is 30 cm;
s2: scattering fishbone powder with the particle size of less than 0.1mm in the lead-polluted soil treated in the step S1, wherein the ratio of the scattering quality of the fishbone powder to the mass of lead in the soil is 0.1: 1; wherein, the fishbone powder is used for crushing fishbone to obtain fishbone powder with the particle size less than 0.1 mm;
s3: sprinkling water in the lead polluted soil treated in the step S2, wherein the sprinkling water amount is 80g/kg of soil, and then uniformly mixing;
s4: and (4) covering a film on the surface of the lead-polluted soil treated in the step (S3), and fermenting the lead-polluted soil covered by the film at the temperature of 32 ℃ for 15 days.
Example two
The embodiment provides an improvement method of lead-contaminated soil, which comprises the following steps:
s1: ploughing the lead polluted soil by adopting a deep scarification plough, wherein the ploughing depth is 40 cm;
s2: scattering fishbone powder with the particle size of less than 0.1mm in the lead-polluted soil treated in the step S1, wherein the ratio of the scattering quality of the fishbone powder to the mass of lead in the soil is 0.2: 1; wherein, the fishbone powder is used for crushing fishbone to obtain fishbone powder with the particle size less than 0.1 mm;
s3: sprinkling water in the lead polluted soil treated in the step S2, wherein the sprinkling water amount is 100g/kg of soil, and then uniformly mixing;
s4: and (4) covering a film on the surface of the lead-polluted soil treated in the step (S3), and fermenting the lead-polluted soil covered by the film at the temperature of 40 ℃ for 20 days.
EXAMPLE III
The embodiment provides an improvement method of lead-contaminated soil, which comprises the following steps:
s1: ploughing the lead polluted soil by adopting a deep scarification plough, wherein the ploughing depth is 35 cm;
s2: scattering fishbone powder with the particle size of less than 0.1mm in the lead-polluted soil treated in the step S1, wherein the ratio of the scattering quality of the fishbone powder to the mass of lead in the soil is 0.15: 1; wherein, the fishbone powder is used for crushing fishbone to obtain fishbone powder with the particle size less than 0.1 mm;
s3: sprinkling water in the lead polluted soil treated in the step S2, wherein the sprinkling water amount is 90g/kg of soil, and then uniformly mixing;
s4: and (4) covering a film on the surface of the lead-polluted soil treated in the step (S3), and fermenting the lead-polluted soil covered by the film at the temperature of 36 ℃ for 18 days.
Example four
The embodiment provides an improvement method of lead-contaminated soil, which comprises the following steps:
s1: ploughing the lead polluted soil by adopting a deep scarification plough, wherein the ploughing depth is 30 cm;
s2: scattering fishbone powder with the particle size of less than 0.1mm in the lead-polluted soil treated in the step S1, wherein the ratio of the scattering quality of the fishbone powder to the mass of lead in the soil is 0.1: 1; the fish bone powder comprises the following raw material components in parts by weight: 40 parts of fishbone, 5 parts of chicken bone, 10 parts of pig bone and 2 parts of boric acid, wherein the preparation method of the fishbone powder comprises the following steps: pulverizing fishbone, chicken bone and pig bone to obtain mixed powder with particle size less than 0.1mm, adding other rest raw materials, and mixing to obtain fishbone powder;
s3: sprinkling water in the lead polluted soil treated in the step S2, wherein the sprinkling water amount is 80g/kg of soil, and then uniformly mixing;
s4: and (4) covering a film on the surface of the lead-polluted soil treated in the step (S3), and fermenting the lead-polluted soil covered by the film at the temperature of 32 ℃ for 15 days.
EXAMPLE five
The embodiment provides an improvement method of lead-contaminated soil, which comprises the following steps:
s1: ploughing the lead polluted soil by adopting a deep scarification plough, wherein the ploughing depth is 40 cm;
s2: scattering fishbone powder with the particle size of less than 0.1mm in the lead-polluted soil treated in the step S1, wherein the ratio of the scattering quality of the fishbone powder to the mass of lead in the soil is 0.2: 1; the fish bone powder comprises the following raw material components in parts by weight: 50 parts of fishbone, 3 parts of chicken bone, 12 parts of pig bone and 1 part of boric acid, wherein the preparation method of the fishbone powder comprises the following steps: pulverizing fishbone, chicken bone and pig bone to obtain mixed powder with particle size less than 0.1mm, adding other rest raw materials, and mixing to obtain fishbone powder;
s3: sprinkling water in the lead polluted soil treated in the step S2, wherein the sprinkling water amount is 100g/kg of soil, and then uniformly mixing;
s4: and (4) covering a film on the surface of the lead-polluted soil treated in the step (S3), and fermenting the lead-polluted soil covered by the film at the temperature of 40 ℃ for 20 days.
EXAMPLE six
The embodiment provides an improvement method of lead-contaminated soil, which comprises the following steps:
s1: ploughing the lead polluted soil by adopting a deep scarification plough, wherein the ploughing depth is 35 cm;
s2: scattering fishbone powder with the particle size of less than 0.1mm in the lead-polluted soil treated in the step S1, wherein the ratio of the scattering quality of the fishbone powder to the mass of lead in the soil is 0.15: 1; the fish bone powder comprises the following raw material components in parts by weight: 45 parts of fishbone, 4 parts of chicken bone, 11 parts of pig bone and 1.5 parts of boric acid, wherein the preparation method of the fishbone powder comprises the following steps: pulverizing fishbone, chicken bone and pig bone to obtain mixed powder with particle size less than 0.1mm, adding other rest raw materials, and mixing to obtain fishbone powder;
s3: sprinkling water in the lead polluted soil treated in the step S2, wherein the sprinkling water amount is 90g/kg of soil, and then uniformly mixing;
s4: and (4) covering a film on the surface of the lead-polluted soil treated in the step (S3), and fermenting the lead-polluted soil covered by the film at the temperature of 36 ℃ for 18 days.
EXAMPLE seven
The embodiment provides an improvement method of lead-contaminated soil, which comprises the following steps:
s1: ploughing the lead polluted soil by adopting a deep scarification plough, wherein the ploughing depth is 30 cm;
s2: scattering fishbone powder with the particle size of less than 0.1mm in the lead-polluted soil treated in the step S1, wherein the ratio of the scattering quality of the fishbone powder to the mass of lead in the soil is 0.1: 1; the fish bone powder comprises the following raw material components in parts by weight: 40 parts of fishbone, 5 parts of chicken bone, 10 parts of pig bone, 2 parts of boric acid, 5 parts of spirulina powder, 3 parts of bentonite and 1 part of brown algae powder, wherein the preparation method of the fishbone powder comprises the following steps: pulverizing fishbone, chicken bone and pig bone to obtain mixed powder with particle size less than 0.1mm, adding other rest raw materials, and mixing to obtain fishbone powder;
s3: sprinkling water in the lead polluted soil treated in the step S2, wherein the sprinkling water amount is 80g/kg of soil, and then uniformly mixing;
s4: and (4) covering a film on the surface of the lead-polluted soil treated in the step (S3), and fermenting the lead-polluted soil covered by the film at the temperature of 32 ℃ for 15 days.
Example eight
The embodiment provides an improvement method of lead-contaminated soil, which comprises the following steps:
s1: ploughing the lead polluted soil by adopting a deep scarification plough, wherein the ploughing depth is 40 cm;
s2: scattering fishbone powder with the particle size of less than 0.1mm in the lead-polluted soil treated in the step S1, wherein the ratio of the scattering quality of the fishbone powder to the mass of lead in the soil is 0.2: 1; the fish bone powder comprises the following raw material components in parts by weight: 50 parts of fishbone, 3 parts of chicken bone, 12 parts of pig bone, 1 part of boric acid, 7 parts of spirulina powder, 2 parts of bentonite and 2 parts of brown algae powder, wherein the preparation method of the fishbone powder comprises the following steps: pulverizing fishbone, chicken bone and pig bone to obtain mixed powder with particle size less than 0.1mm, adding other rest raw materials, and mixing to obtain fishbone powder;
s3: sprinkling water in the lead polluted soil treated in the step S2, wherein the sprinkling water amount is 100g/kg of soil, and then uniformly mixing;
s4: and (4) covering a film on the surface of the lead-polluted soil treated in the step (S3), and fermenting the lead-polluted soil covered by the film at the temperature of 40 ℃ for 20 days.
Example nine
The embodiment provides an improvement method of lead-contaminated soil, which comprises the following steps:
s1: ploughing the lead polluted soil by adopting a deep scarification plough, wherein the ploughing depth is 35 cm;
s2: scattering fishbone powder with the particle size of less than 0.1mm in the lead-polluted soil treated in the step S1, wherein the ratio of the scattering quality of the fishbone powder to the mass of lead in the soil is 0.15: 1; the fish bone powder comprises the following raw material components in parts by weight: 45 parts of fishbone, 4 parts of chicken bone, 11 parts of pig bone, 1.5 parts of boric acid, 6 parts of spirulina powder, 2.5 parts of bentonite and 1.5 parts of brown algae powder, wherein the preparation method of the fishbone powder comprises the following steps: pulverizing fishbone, chicken bone and pig bone to obtain mixed powder with particle size less than 0.1mm, adding other rest raw materials, and mixing to obtain fishbone powder;
s3: sprinkling water in the lead polluted soil treated in the step S2, wherein the sprinkling water amount is 90g/kg of soil, and then uniformly mixing;
s4: and (4) covering a film on the surface of the lead-polluted soil treated in the step (S3), and fermenting the lead-polluted soil covered by the film at the temperature of 36 ℃ for 18 days.
The content of active lead in the soil before the improvement of the invention is detected, and the content of active lead in the soil after the improvement by the method provided by the first to ninth embodiments of the invention is detected, and the reduction rate of active lead is calculated, and the specific results are shown in table 1 below.
TABLE 1 statistical results of the reduction rates of active lead
| Group of | Example one | Example two | EXAMPLE III |
| Reduction rate of active lead in soil | 57.6％ | 56.9％ | 58.2％ |
| Group of | Example four | EXAMPLE five | EXAMPLE six |
| Reduction rate of active lead in soil | 70.3％ | 70.0％ | 70.9％ |
| Group of | EXAMPLE seven | Example eight | Example nine |
| Reduction rate of active lead in soil | 81.7％ | 81.9％ | 82.6％ |
It should be noted that, in addition to the cases listed in the first to ninth embodiments, other method parameters may be selected.
The technical scheme provided by the invention has the following beneficial effects: (1) the method improves the lead-polluted soil by adopting the fishbone powder, utilizes the combination of lead and the fishbone powder to generate phosphorus-chlorine-lead which is harmless to human bodies, reduces the active lead in the soil, and thus achieves the improvement effect; (2) the method for improving the lead-polluted soil provided by the invention has the advantages of low cost, strong operability and wide application range.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains. Unless specifically stated otherwise, the relative steps, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention. In all examples shown and described herein, unless otherwise specified, any particular value should be construed as merely illustrative, and not restrictive, and thus other examples of example embodiments may have different values.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention, and all of the technical solutions are covered in the protective scope of the present invention.
Claims (6)
1. The method for improving the lead-polluted soil is characterized by comprising the following steps of:
s1: ploughing the lead-polluted soil;
s2: spreading fishbone powder in the lead polluted soil treated in the step S1;
s3: sprinkling water in the lead polluted soil treated in the step S2, and then uniformly mixing;
s4: covering a film on the surface of the lead-polluted soil treated in the step S3, and fermenting the lead-polluted soil covered by the film;
in step S2, the fishbone powder comprises the following raw material components in parts by weight: 40-50 parts of fishbone, 3-5 parts of chicken bone, 10-12 parts of pig bone and 1-2 parts of boric acid, and the feed also comprises: 5-7 parts of spirulina powder, 2-3 parts of bentonite and 1-2 parts of brown algae powder; the ratio of the sowing quality of the fishbone powder to the quality of lead in the soil is (0.1-0.2): 1.
2. The method for improving lead-contaminated soil according to claim 1, wherein:
in the step S4, the fermentation temperature is 32-40 ℃, and the fermentation time is 15-20 days.
3. The method for improving lead-contaminated soil according to claim 1, wherein:
in step S3, the water spraying amount is 80-100 g/kg soil.
4. The method for improving lead-contaminated soil according to claim 1, wherein:
in step S1, the plowing is performed by a deep scarification plowing machine, and the plowing depth is 30-40 cm.
5. The method for improving lead-contaminated soil according to claim 1, wherein:
in step S2, the preparation method of the fishbone powder comprises the following steps: pulverizing fishbone, chicken bone and pig bone to obtain mixed powder with particle size less than 0.1mm, adding other rest raw materials, and mixing to obtain the fishbone powder.
6. The method for improving lead-contaminated soil according to claim 1, wherein:
according to actual needs, the method from step S1 to step S4 is circularly improved for a plurality of times.
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| CN201710652948.9A CN107321783B (en) | 2017-08-02 | 2017-08-02 | Method for improving lead-polluted soil |
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| CN201710652948.9A CN107321783B (en) | 2017-08-02 | 2017-08-02 | Method for improving lead-polluted soil |
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| CN107321783B true CN107321783B (en) | 2020-01-21 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928179A (en) * | 2009-06-19 | 2010-12-29 | 深圳市意可曼生物科技有限公司 | Slow release fertilizer having soil remediation function and soil contamination remediation method |
| CN103740373A (en) * | 2013-12-09 | 2014-04-23 | 浙江省环境保护科学设计研究院 | Stabilizing agent for heavy metal contaminated soil and preparation method and application thereof |
| CN106085450A (en) * | 2016-06-17 | 2016-11-09 | 战锡林 | Heavy-metal contaminated soil repair materials |
| CN106345803A (en) * | 2016-10-31 | 2017-01-25 | 湖南科技学院 | Soil disinfection and soil restoration method |
| CN106391691A (en) * | 2016-08-31 | 2017-02-15 | 云南能投生态环境科技有限公司 | Method for efficiently remedying heavy-metal-contaminated soil |
| CN106825007A (en) * | 2016-12-06 | 2017-06-13 | 广州富生源环保工程有限公司 | A kind of method for administering heavy-metal contaminated soil |
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- 2017-08-02 CN CN201710652948.9A patent/CN107321783B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928179A (en) * | 2009-06-19 | 2010-12-29 | 深圳市意可曼生物科技有限公司 | Slow release fertilizer having soil remediation function and soil contamination remediation method |
| CN103740373A (en) * | 2013-12-09 | 2014-04-23 | 浙江省环境保护科学设计研究院 | Stabilizing agent for heavy metal contaminated soil and preparation method and application thereof |
| CN106085450A (en) * | 2016-06-17 | 2016-11-09 | 战锡林 | Heavy-metal contaminated soil repair materials |
| CN106391691A (en) * | 2016-08-31 | 2017-02-15 | 云南能投生态环境科技有限公司 | Method for efficiently remedying heavy-metal-contaminated soil |
| CN106345803A (en) * | 2016-10-31 | 2017-01-25 | 湖南科技学院 | Soil disinfection and soil restoration method |
| CN106825007A (en) * | 2016-12-06 | 2017-06-13 | 广州富生源环保工程有限公司 | A kind of method for administering heavy-metal contaminated soil |
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| CN107321783A (en) | 2017-11-07 |
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