CN104492805A - Soil remediation method - Google Patents
Soil remediation method Download PDFInfo
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- CN104492805A CN104492805A CN201410704670.1A CN201410704670A CN104492805A CN 104492805 A CN104492805 A CN 104492805A CN 201410704670 A CN201410704670 A CN 201410704670A CN 104492805 A CN104492805 A CN 104492805A
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Abstract
The invention relates to a soil remediation method. The method comprises the following steps: (1) preparing biological molecular sieves by mixing molecular sieves and microorganisms; (2) uniformly mixing the biological molecular sieves and soil according to the mass ration of (1-3) to 100 to obtain primarily treated soil, and 50-70 days later, uniformly mixing the biological molecular sieves and the primarily treated soil according to the mass ratio of (1-3) to 100. The biological molecular sieves obtained according to the method disclosed by the invention have good adsorption and ion exchange properties, meet the requirements of soil remediation and improvement, and enhance microorganism groups of the soil; the biological molecular sieves can be directly used as a soil amendment to improve the supply condition of beneficial trace elements required by crops, reduce the soil sourness and improve the base exchange capacity of soil, the content of heavy metal ions can be reduced by 40 percent in about 20 days, and the chemical residues can be reduced by 50 percent; and the biological molecular sieves can be used for improving the soil structure, regulating the PH value and chemical and physical properties, and degrading deposited chemicals and organic substances.
Description
Technical field
The invention belongs to technical field of soil remediation, be specifically related to a kind of soil remediation method.
Background technology
The soil pollution type of China is various, present the old and new's pollutant and deposit, Inorganic whisker pollute situation.The pollutions such as existing heavy metal, agricultural chemicals, antibiotic and persistent organism, have again the pollution type such as radioactivity, pathogen, soil pollution approach is many, and reason is complicated, controls difficulty large.
Over nearly 20 years, along with the mankind's activity of socioeconomic high speed development and high strength, the contaminated area of China's soil is in continuous expansion, the continuous worsening aggravation of soil quality, endanger more serious, had influence on the strategic objective building a well-off society in an all-round way and realize sustainable development, future will be faced with more stern challenge in 15 years.Under this situation, improvement and the recovery technique of development contaminated soil to seem particularly necessity and urgent in China, especially bioremediation technology.
Soil restoring technology is summed up, and conventional having is following several: thermodynamics recovery technique, thermal desorption recovery technique, burning method, land fill, chemical leaching, composting process, phytoremediation, permeable reactive wall, bioremediation technology etc.Such as publication number be CN102757896A patent document discloses a kind of Efficient microbial soil remediation agent, this soil-repairing agent is mixed by photosynthetic bacteria, bacillus subtilis, saccharomycete and actinomycetic zymocyte liquid, and the percent by volume of each zymocyte liquid is: photosynthetic bacteria 10 ~ 25%, bacillus subtilis 25 ~ 35%, saccharomycete 20 ~ 35%, actinomyces 20 ~ 40%.Make the biosphere that Zinc fractions is good, thus degraded heavy metal, activating soil, improve the effect of soil texture.
The subject matter that above-mentioned all methods exist is: have somewhat expensive, easily cause secondary pollution, dosing large, be only suitable for the shortcomings such as low stain soil, and most of recovery technique is more or less with soil and is served side effect.And China's soil pollution particularly mining area and smeltery's periphery heavy-metal contaminated soil there is compound and feature that is high concentration, therefore developing new stabilisation solidification recovery technique is improve the key of China's soil pollution stabilisation solidification recovery technique.
Summary of the invention
The invention provides a kind of method of soil remediation, be not only applicable to low stain soil, and for heavy-metal contaminated soil that is compound, high concentration, also there is extraordinary stabilisation solidification repair.
A method for soil remediation, comprises the following steps:
(1) molecular sieve and microorganism are mixed with obtain biological molecular sieve;
(2) by described biological molecular sieve and soil in mass ratio 1 ~ 3:100 mix and obtain coagulation soil, after 50 ~ 70 days, then by described biological molecular sieve and described coagulation soil in mass ratio 1 ~ 3:100 mix.
Because biological molecular sieve can present alkalescence or acidity, thus appropriate interpolation can change pH and other physicochemical property of soil, and biological molecular sieve has the extremely strong ability in conjunction with heavy metal ion, can adsorb and passivation soil in heavy metal ion, reduce its biological effectiveness, reduce the uptake of crop heavy metal, improve the quality of agricultural product, thus the reparation of heavy metal contaminated soil has booster action.Biological molecular sieve reaches the fixing object of heavy metal in contaminated soil, reduces its animal migration in the environment and bioavailability.
When different contaminated soils is repaired, different microorganism fungus kinds can be used to be combined with molecular sieve, as preferably, described microorganism is acetobacter aceti (Acetobacter aceti), acetobacter aceti liquefaction subspecies (Acetobacter liquefaciens), bacillus coagulans (Bacillus coagulans), Pseudomonas stutzeri (Pseudomonas stutzeri), pseudomonas putida (Pseudomonas putida), one or more in Lactobacillus plantarum (Lactobacillus plantarum) or Lactobacillus rhamnosus (Lactobacillus rhamnosus).
As more preferably, described microorganism is one or more in Pseudomonas stutzeri (Pseudomonas stutzeri), Pseudomonas stutzeri (Pseudomonas stutzeri), Lactobacillus rhamnosus (Lactobacillus rhamnosus) or acetobacter aceti (Acetobacter aceti).
In described step (2), every mu of soil application 1 ~ 2 ton of fertilizer, watering keeps soil moisture 60 ~ 70%, then mixes with described biological molecular sieve and obtains described coagulation soil.
As preferably, in described step (2), every mu of soil application 1 ~ 2 ton of fertilizer, watering keeps soil moisture 70%, then mixes with described biological molecular sieve and obtains described coagulation soil.
Utilize the porous character of biological molecular sieve, add appropriate biological molecular sieve and can improve soil texture, increase loosing soil degree, be convenient to root expansion, reduce soil crust, improve water permeability, improve air permeability.As preferably, the mass ratio of described biological molecular sieve and soil is 1 ~ 2.5:100.
As more preferably, the mass ratio of described biological molecular sieve and soil is 1:100.
Compared with prior art, beneficial effect of the present invention is embodied in:
(1) this biological molecular sieve has good adsorption and ion-exchange performance, can meet the requirement of soil remediation improvement, strengthens edaphon;
(2) this biological molecular sieve directly can be used as soil conditioner, improve the state of supply of healthy trace elements with household needed for crop, reduce soil acidity, improve the baseexchangecapacity of soil, within about 20 days, heavy metal ion content can reduce by 40%, and chemical residue can reduce by 50%;
(3) improve soil texture, adjustment pH value, chemistry, physical, decompose sedimentation chemistry thing in soil and organic substance.
Detailed description of the invention
Embodiment 1
Soil pre-treatment: serious with soil compaction, desertification, disease, and the green house of vegetables soil that cannot carry out planting is example, when temperature more than 10 degree, 1 ~ 2 ton of fertilizer is used on every mu of ground, plough under in soil with rotary cultivator, and watering keeps soil moisture about 70%.
Soil remediation process: acetobacter aceti (Acetobacter aceti) will be included, acetobacter aceti liquefaction subspecies (Acetobacter liquefaciens), flora and the molecular sieve of bacillus coagulans (Bacillus coagulans) and Pseudomonas stutzeri (Pseudomonas stutzeri) are mixed to get biological molecular sieve, again by biological molecular sieve and above-mentioned soil in mass ratio 1:100 mix, flora by acting in conjunction in soil, a kind of material " phosphoglycan " of glue will be produced, molecule all kinds of in soil is bonded together, form good crumb structure, be beneficial to water, fertile, gas, naturally circulating of heat, soil would not harden, desertify.When temperature is more than 15 degree, within about 20 days, heavy metal ion content reduces by 40%, and chemical residue reduces by 50%.After 60 days, then by biological molecular sieve and above-mentioned soil in mass ratio 1:100 mix, after finally again after 3 months, soil remediation completes substantially, and its soil physico-chemical index can reach the secondary standard of standard of soil environment quality GB15618-1995.
Note: use microorganism to buy gained by market in embodiment 1.
Embodiment 2
Soil pre-treatment: serious with soil compaction, desertification, disease, and the green house of vegetables soil that cannot carry out planting is example, when temperature more than 10 degree, 1 ~ 2 ton of fertilizer is used on every mu of ground, plough under in soil with rotary cultivator, and watering keeps soil moisture about 70%.
Soil remediation process: acetobacter aceti (Acetobacter aceti) will be included, acetobacter aceti liquefaction subspecies (Acetobacter liquefaciens), flora and the molecular sieve of bacillus coagulans (Bacillus coagulans) and Pseudomonas stutzeri (Pseudomonas stutzeri) are mixed to get biological molecular sieve, again by biological molecular sieve and above-mentioned soil in mass ratio 3:100 mix, flora by acting in conjunction in soil, a kind of material " phosphoglycan " of glue will be produced, molecule all kinds of in soil is bonded together, form good crumb structure, be beneficial to water, fertile, gas, naturally circulating of heat, soil would not harden, desertify.When temperature is more than 15 degree, within about 20 days, heavy metal ion content reduces by 40%, and chemical residue reduces by 45%.After 60 days, then by biological molecular sieve and above-mentioned soil in mass ratio 3:100 mix, after finally again after 3 months, soil remediation completes substantially, and its soil physico-chemical index can reach the secondary standard of standard of soil environment quality GB15618-1995.
Note: use microorganism to buy gained by market in embodiment 2.
Embodiment 3
Soil pre-treatment: serious with soil compaction, desertification, disease, and the green house of vegetables soil that cannot carry out planting is example, when temperature more than 10 degree, 1 ~ 2 ton of fertilizer is used on every mu of ground, plough under in soil with rotary cultivator, and watering keeps soil moisture about 70%.
Soil remediation process: pseudomonas putida (Pseudomonas putida) will be included, flora and the molecular sieve of Lactobacillus plantarum (Lactobacillus plantarum) and Lactobacillus rhamnosus (Lactobacillus rhamnosus) are mixed to get biological molecular sieve, again by biological molecular sieve and above-mentioned soil in mass ratio 2.5:100 mix, flora by acting in conjunction in soil, a kind of material " phosphoglycan " of glue will be produced, molecule all kinds of in soil is bonded together, form good crumb structure, be beneficial to water, fertile, gas, naturally circulating of heat, soil would not harden, desertify.When temperature is more than 15 degree, within about 20 days, heavy metal ion content reduces by 35%, and chemical residue reduces by 50%.After 60 days, then by biological molecular sieve and above-mentioned soil in mass ratio 2.5:100 mix, after finally again after 3 months, soil remediation completes substantially, and its soil physico-chemical index can reach the secondary standard of standard of soil environment quality GB15618-1995.
Note: use microorganism to buy gained by market in embodiment 3.
Claims (7)
1. a method for soil remediation, is characterized in that, comprises the following steps:
(1) molecular sieve and microorganism are mixed with obtain biological molecular sieve;
(2) by described biological molecular sieve and soil in mass ratio 1 ~ 3:100 mix and obtain coagulation soil, after 50 ~ 70 days, then by described biological molecular sieve and described coagulation soil in mass ratio 1 ~ 3:100 mix.
2. the method for soil remediation as claimed in claim 1, it is characterized in that, described microorganism is acetobacter aceti (Acetobacter aceti), acetobacter aceti liquefaction subspecies (Acetobacter liquefaciens), bacillus coagulans (Bacillus coagulans), Pseudomonas stutzeri (Pseudomonas stutzeri), pseudomonas putida (Pseudomonas putida), one or more in Lactobacillus plantarum (Lactobacillus plantarum) or Lactobacillus rhamnosus (Lactobacillus rhamnosus).
3. the method for soil remediation as claimed in claim 2, it is characterized in that, described microorganism is one or more in Pseudomonas stutzeri (Pseudomonas stutzeri), Pseudomonas stutzeri (Pseudomonas stutzeri), Lactobacillus rhamnosus (Lactobacillus rhamnosus) or acetobacter aceti (Acetobacter aceti).
4. the method for soil remediation as claimed in claim 1, it is characterized in that, in described step (2), every mu of soil application 1 ~ 2 ton of fertilizer, watering keeps soil moisture 60 ~ 70%, then mixes with described biological molecular sieve and obtains described coagulation soil.
5. the method for soil remediation as claimed in claim 4, it is characterized in that, in described step (2), every mu of soil application 1 ~ 2 ton of fertilizer, watering keeps soil moisture 70%, then mixes with described biological molecular sieve and obtains described coagulation soil.
6. the method for soil remediation as claimed in claim 1, it is characterized in that, the mass ratio of described biological molecular sieve and soil is 1 ~ 2.5:100.
7. the method for soil remediation as claimed in claim 6, it is characterized in that, the mass ratio of described biological molecular sieve and soil is 1:100.
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| CN201410704670.1A CN104492805A (en) | 2014-11-28 | 2014-11-28 | Soil remediation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176876A (en) * | 2015-10-11 | 2015-12-23 | 卢美珍 | Preparation for contaminated soil restoration |
| CN107189786A (en) * | 2017-06-07 | 2017-09-22 | 阿诺雷克生物科技有限公司 | Degraded silicate and heavy metal-passivated bacillus coagulans microbial inoculum and preparation method |
| 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 |
| CN110467508A (en) * | 2019-08-01 | 2019-11-19 | 山东亿农高科生物科技有限公司 | A kind of facility cultivation acidified soil microorganism renovation agent and preparation method thereof |
| CN110832966A (en) * | 2019-11-25 | 2020-02-25 | 辽宁大学 | Method for improving soil fertility by using compound microbial agent |
| CN112694984A (en) * | 2019-10-23 | 2021-04-23 | 国家电投集团远达环保工程有限公司重庆科技分公司 | Microbial compound inoculant for restoring mining area soil and use method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176876A (en) * | 2015-10-11 | 2015-12-23 | 卢美珍 | Preparation for contaminated soil restoration |
| CN107189786A (en) * | 2017-06-07 | 2017-09-22 | 阿诺雷克生物科技有限公司 | Degraded silicate and heavy metal-passivated bacillus coagulans microbial inoculum and preparation method |
| CN107189786B (en) * | 2017-06-07 | 2020-01-31 | 阿诺雷克生物科技有限公司 | Bacillus coagulans microbial inoculum for degrading silicate and passivating heavy metal and preparation method thereof |
| 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 |
| CN110467508A (en) * | 2019-08-01 | 2019-11-19 | 山东亿农高科生物科技有限公司 | A kind of facility cultivation acidified soil microorganism renovation agent and preparation method thereof |
| CN112694984A (en) * | 2019-10-23 | 2021-04-23 | 国家电投集团远达环保工程有限公司重庆科技分公司 | Microbial compound inoculant for restoring mining area soil and use method thereof |
| CN110832966A (en) * | 2019-11-25 | 2020-02-25 | 辽宁大学 | Method for improving soil fertility by using compound microbial agent |
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Application publication date: 20150408 |