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Ecological restoration method of soil arsenic pollution and application thereof

A technology for ecological restoration and arsenic pollution, applied in the field of ecological restoration of soil arsenic pollution, can solve the problems of super-accumulation performance degradation, loss of repair function, poor repair effect, etc., to achieve simple technology, low cost, and conducive to ecological sustainability The effect of development

Inactive Publication Date: 2018-12-04
南京怡可帮生态环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these plants are shade plants, which grow in wild wilderness for a long time and are used for arsenic cultivation in large-scale farmland soil. After asexual reproduction, the performance of hyperaccumulation is greatly degraded, and the repair function is lost

Method used

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  • Ecological restoration method of soil arsenic pollution and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Add 100 grams of starch, 50 grams of rice straw powder, 60 grams of bean cake powder, 40 grams of dipotassium hydrogen phosphate, 30 grams of potassium dihydrogen phosphate, 10 grams of calcium carbonate powder, and 5 grams of sulfurous acid in a 10-liter bioreactor. Iron, 10 grams of magnesium sulfate, 7000 milliliters of water, start the agitator to stir the mixed solution, start the heating steam pipe, heat the mixed solution, keep 45 minutes at 126°C under 0.1Mpa, and finish the sterilization, cool to 30°C to inoculate 0.5% (mass / volume) of Penicillium, stirring constantly, agitator speed 50 rpm, ventilation rate 0.5 liters of air / liter of liquid (volume / volume / minute), constant temperature mixed culture for 72 hours, fermentation finished, put the tank. Same method, inoculate 0.5% (mass / volume) Aspergillus niger, Fusarium respectively in above-mentioned same liquid fermentation culture medium, start agitator, 50 rev / mins of agitator rotating speed, ventilation 0...

Embodiment 2

[0024] 1. Add 500 grams of starch, 1000 grams of wheat straw powder, 100 grams of bean cake powder, 80 grams of dipotassium hydrogen phosphate, 60 grams of potassium dihydrogen phosphate, 30 grams of calcium carbonate powder, and 20 grams of ferrous sulfate in a 10-liter bioreactor , 30 grams of magnesium sulfate, 7000 milliliters of water, start the agitator to stir the mixed solution, start the heating steam pipe, heat the mixed solution, keep it at 126°C for 45 minutes under 0.1Mpa, after the sterilization is completed, cool to 30°C to inoculate 3% (mass / volume ) of Penicillium, stirring constantly, agitator speed 50-120 rev / min, ventilation 0.8 liters of air / liter of liquid (volume / volume / minute), constant temperature mixed culture for 80 hours, fermentation finished, put tank. Same method, inoculate 3% (mass / volume) Aspergillus niger, Fusarium respectively in above-mentioned identical liquid fermentation culture medium, start agitator, 80 rev / mins of agitator rotating spee...

Embodiment 3

[0028] 1. Add 900 grams of starch, 2000 grams of rice and / or wheat straw powder, 300 grams of bean cake powder, 180 grams of dipotassium hydrogen phosphate, 160 grams of potassium dihydrogen phosphate, and 120 grams of calcium carbonate powder in a 10-liter bioreactor. 60 grams of ferrous sulfate, 50 grams of magnesium sulfate, 7000 ml of water, start the stirrer to stir the mixed solution, start the heating steam pipe, heat the mixed solution, keep it at 126°C for 45 minutes at 0.1Mpa, after the sterilization is completed, cool to 30°C to inoculate 7 % (mass / volume) Penicillium, keep stirring, 120 revolutions / minute of agitator speed, 1 liter of air / liter liquid (volume / volume / minute) of aeration capacity, constant temperature mixed culture 96 hours, fermentation finishes, puts tank. Same method, inoculate 7% (mass / volume) Aspergillus niger, Fusarium respectively in above-mentioned identical liquid fermentation culture medium, start agitator, 120 rev / mins of agitator rotating ...

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Abstract

The invention relates to an ecological restoration method of soil arsenic pollution and an application thereof, which belong to the field of ecological environmental protection. The method is achievedby the following steps: adding starch, bean cake, calcium carbonate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, and ferrous sulfate and the like in a bioreactor. adding enough water, and performing steps of stirring, uniform mixing, heating sterilization, cooling, inoculation with beneficial strains such as penicillium, fermentation, cooling, blending, canning applying into soil, and natural culturing for 6-18 months. The method can continuously convert arsenic in the soil into volatile gas, and volatilizes the volatile gas from the soil into the air to remove arsenic from the soil. The method eliminates arsenic pollution in soil and groundwater, protects soil environment, protects soil production and ecological function, protects groundwater environment, and ensuresfood safety.

Description

technical field [0001] The invention belongs to the field of ecological environment protection, and in particular relates to an ecological restoration method and application of soil arsenic pollution. Background technique [0002] Arsenic is a very toxic environmental pollutant. The arsenic in natural soil mainly comes from the soil-forming parent material. During the formation of soil by rock weathering, the content of arsenic (relative to the soil-forming parent material) was significantly enriched. Human activities such as mining, smelting, sewage irrigation, fertilization, application of pesticides and wood preservatives may cause soil arsenic pollution. Excessive accumulation of arsenic in the soil will reduce crop yield and quality, and may cause water and air pollution, and can enter the human body through food chains and water bodies. Recent studies have shown that low levels of arsenic can seriously endanger human health. [0003] In 2016, the "Soil Pollution Pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10
CPCB09C1/10
Inventor 吴洪生
Owner 南京怡可帮生态环境科技有限公司