Repair method of heavy metal polluted soil

A technology of polluted soil and remediation method, applied in the restoration of polluted soil and other directions, can solve the problems of slow effect, unstable remediation effect, insignificant effect of phytoremediation method, etc. stable effect

Inactive Publication Date: 2017-12-12
常州欧利莱照明有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for remediating heavy metal-contaminated soil in view of the problems of insignificant effect, slow effect and unstable repair effect of current phytoremediation methods

Method used

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  • Repair method of heavy metal polluted soil

Examples

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Effect test

example 1

[0029] Liquid preparation method:

[0030] a. In parts by weight, 70 parts of water, 30 parts of peptone, 17 parts of yeast extract, 15 parts of glucose, and 4 parts of agar were mixed and sterilized at high temperature to obtain a nutrient solution;

[0031] b. According to the mass ratio of 100:1, put the nutrient solution and pig manure into the fermenter, ferment for 5 days at a temperature of 25°C, filter, collect the fermented liquid, and obtain the liquid.

[0032] Carbonized stalks are obtained by carbonizing corn stalks at a temperature of 300°C and collecting carbonized products.

[0033] The repairing method of heavy metal polluted soil of the present invention, comprises the steps:

[0034] (1) Lay pipes inside the heavy metal contaminated soil, the depth is 40cm, the distance between the pipes is 20cm, use the pipes for aeration, the aeration rate is 8L / min, after aeration for 20min, the liquid is delivered to the soil at 5L / min , the delivery time is 15min;

...

example 2

[0039] Liquid preparation method:

[0040] a. In parts by weight, 75 parts of water, 35 parts of peptone, 19 parts of yeast extract, 18 parts of glucose, and 5 parts of agar were mixed and sterilized at high temperature to obtain a nutrient solution;

[0041] b. According to the mass ratio of 110:1.5, put the nutrient solution and pig manure into the fermenter, ferment for 6 days at a temperature of 28°C, filter, collect the fermented liquid, and obtain the liquid.

[0042] Carbonized stalks are obtained by carbonizing corn stalks at a temperature of 310°C and collecting carbonized products.

[0043] The repairing method of heavy metal polluted soil of the present invention, comprises the steps:

[0044] (1) Lay pipes inside the heavy metal polluted soil, the depth is 45cm, the distance between the pipes is 25cm, use pipes for aeration, the aeration rate is 9L / min, after 25min of aeration, transport to the soil at 5.5L / min Liquid, delivery time is 18min;

[0045] (2) After ...

example 3

[0049] Liquid preparation method:

[0050] a. In parts by weight, 80 parts of water, 40 parts of peptone, 23 parts of yeast extract, 20 parts of glucose, and 7 parts of agar were mixed and sterilized at high temperature to obtain a nutrient solution;

[0051] b. According to the mass ratio of 120:2, put the nutrient solution and pig manure into the fermenter, ferment for 7 days at a temperature of 30°C, filter, collect the fermented liquid, and obtain the liquid.

[0052] Carbonized stalks are obtained by carbonizing corn stalks at a temperature of 320°C and collecting carbonized products.

[0053] The repairing method of heavy metal polluted soil of the present invention, comprises the steps:

[0054] (1) Lay pipes inside the heavy metal contaminated soil, the depth is 50cm, the distance between the pipes is 30cm, use the pipes for aeration, the aeration rate is 10L / min, after 30min of aeration, the liquid is delivered to the soil at 6L / min , the delivery time is 20min;

[0...

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Abstract

The invention discloses a repair method of heavy metal polluted soil and belongs to the field of polluted soil governance. The repair method comprises the following steps of: paving a pipeline in the heavy metal polluted soil, performing aeration by using the pipeline, and conveying a liquid to the soil at 5-6L / min for 15-20min after aeration for 20-30min; after the liquid is conveyed, inserting carbonized stalks onto the surface of the heavy metal polluted soil, wherein the distance among the carbonized stalks is 10-15cm, spraying bran on the surface of the heavy metal polluted soil after the carbonized stalks are inserted for 10-15d, leaving the carbonized stalks for 2-3d, removing the carbonized stalk, and performing ploughing; planting scindapsus aureus on the surface of the ploughed heavy metal polluted soil, wherein the distance between two pieces of scindapsus aureus is 10-15cm and the planting time is 2-3 months, and paving cobblestones in a circle, the radius of which is 5-6cm, centered by scindapsus aureus; and performing aeration by using the pipeline, removing scindapsus aureus after planting, and then performing ploughing to repair the heavy metal polluted soil. The repair method disclosed by the invention has the beneficial effects that the repair method of heavy metal polluted soil disclosed by the invention is obvious in effect and worth being popularized and used.

Description

technical field [0001] The invention relates to the field of contaminated soil treatment, in particular to a method for remediating heavy metal-contaminated soil. Background technique [0002] Soil heavy metal pollution refers to the phenomenon that human activities introduce heavy metals into the soil, exceeding the self-purification capacity of the soil, causing changes in the composition, structure and function of the soil, and causing the deterioration of the ecological environment quality. [0003] Soil is the fertile and loose surface of the earth that can grow plants. It is a necessary means of production for human survival and development, and it is also the most basic, important and irreplaceable natural resource of human society. Therefore, the protection of soil environment has attracted extensive attention. Among soil pollutants, heavy metal pollution is a typical class of priority pollutants. Many environmental hazards, such as the bone pain disease in Japan (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00
Inventor 刘蓉凤刘沁
Owner 常州欧利莱照明有限公司
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