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Eco-friendly method for in-situ rapid biological repair for heavy metal pollution of soil, and application

A bioremediation and friendly technology, applied in the restoration of contaminated soil, etc., can solve the problems of high cost, secondary pollution, incomplete treatment and removal, etc., and achieve the effect of simple method, reduced investment, and simple and easy technology

Inactive Publication Date: 2017-12-15
吴洪生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] These methods have their own advantages and disadvantages, and most of them are used for water pollution control, but not many are used for large-scale soil pollution control, because the cost is too high, there is secondary pollution, and the treatment and removal are not thorough

Method used

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  • Eco-friendly method for in-situ rapid biological repair for heavy metal pollution of soil, and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Using farmland soil or factory site soil or sedimentation sludge after sewage treatment, add 50 kg of wheat straw powder, 5 kg of green onion straw powder, 5 kg of rapeseed straw powder, 0.01 kg of sulfur powder, and rapeseed into 1,000 kg of soil in place Cake powder 10 kg, Thiobacillus violaceum 10 7 unit / gram soil, Thiobacillus aeruginosa 10 7 individual / gram soil, Desulfovibrio 10 7 individual / gram soil, Desulfomonas 10 7 per gram of soil, Desulfolobus 10 7 One per gram of soil, mix thoroughly with the soil, water, make the soil surface water about 1 cm, and cover with plastic film around;

[0027] 2. Every 4 days in summer, 7 days in spring and autumn, uncover the film covered on the soil after the above 1 treatment, turn the soil again, add 10 kg of rapeseed cake powder, and 10 kg of rapeseed straw powder, mix well, Supplement an appropriate amount of water so that the surface of the soil accumulates about 1 cm of water, and cover it with a film; continuous...

Embodiment 2

[0029] 1. Farmland soil or factory site soil or sedimentation sludge after sewage treatment, add 100 kg of wheat straw powder, 10 kg of garlic straw powder, 10 kg of rapeseed straw powder, 1 kg of sulfur powder, and rapeseed cake to 1,000 kg of soil in situ Powder 20 kg, Thiobacillus violaceum 10 7 unit / gram soil, Thiobacillus aeruginosa 10 7 individual / gram soil, Desulfovibrio 10 7 individual / gram soil, Desulfomonas 10 7 per gram of soil, Desulfolobus 10 7 One per gram of soil, mix thoroughly with the soil, water, make the soil surface water about 1 cm, and cover with plastic film around;

[0030] 2. Every 4 days in summer, 7 days in spring and autumn, uncover the film covering the soil after the above-mentioned 1 treatment, turn the soil again, add 5 kg of rapeseed cake powder, and 5 kg of rapeseed straw powder, mix well, Supplement appropriate amount of water so that the surface of the soil accumulates about 1 cm of water and cover it with a film; continuously turn the ...

Embodiment 3

[0033] 1. Farmland soil or factory site soil or sedimentation sludge after sewage treatment, add 300 kg of plant straw powder, 50 kg of green onion and / or garlic straw powder, 5-0 kg of rapeseed straw powder, and sulfur powder to 1,000 kg of soil in situ 3 kg, rapeseed meal 80 kg, Thiobacillus purple 10 7 unit / gram soil, Thiobacillus aeruginosa 10 7 individual / gram soil, Desulfovibrio 10 7 individual / gram soil, Desulfomonas 10 7 per gram of soil, Desulfolobus 10 7 One per gram of soil, mix thoroughly with the soil, water, make the soil surface water about 1 cm, and cover with plastic film around;

[0034] 2. Every 4 days in summer, 5-7 days in spring and autumn, uncover the film covered on the soil after the above 1 treatment, turn the soil again, add 2 kg of rapeseed cake powder, and 2 kg of rapeseed straw powder, mix Evenly, add appropriate amount of water, so that the surface of the soil accumulates about 1 cm of water, and cover with a film; the soil is continuously tu...

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Abstract

The invention discloses an eco-friendly method for in-situ rapid biological repair for the heavy metal pollution of soil, and an application. The technology belongs to the field of environment protection. The technology is realized through the following steps: adding an appropriate amount of plant straw, green Chinese onion straw and / or garlic straw and rape seed cake in the soil with the heavy metal pollution, turning over, adding an appropriate amount of desulfovibrio, desulfuromonas, desulfobulbus and the like, repeatedly turning over the soil and uniformly mixing the soil with the additives, watering, covering the soil with a plastic film for sealing, thoroughly turning over the soil every 5-7 days, and continuously turning over the soil for 6-8 times, and in this way, most of heavy metals in the polluted soil can be solidified-precipitated and passivated, and the bioactivity and solubility of the heavy metals are greatly reduced, so that the heavy metal pollution of the soil and the poisoning of the heavy metal pollution are eliminated, and environment is protected.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to an eco-friendly in-situ rapid bioremediation method for soil heavy metal pollution and its application. Background technique [0002] Heavy metals refer to metals with a relative density of 5 or more, about 45 kinds, including copper (Cu), lead (Pb), zinc (Zn), tin (Sn), nickel (Ni), cobalt (Co), antimony (Sb) , Mercury (Hg), Cadmium (Cd) and Bismuth (Bi), etc. Although arsenic (As) is not a heavy metal, it is usually included in the category of heavy metals for research and discussion because its source and hazards are similar to those of heavy metals. [0003] With the increasing mining, smelting, processing and commercial manufacturing activities of heavy metals, the use of heavy metals is becoming more and more widespread, and the pollution of heavy metals is becoming more and more serious. Heavy metals are listed as the first pollutants in all countries i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10
CPCB09C1/10B09C2101/00
Inventor 吴洪生
Owner 吴洪生
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