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Technology for controlling heavy metal pollution of soil and application of technology for controlling heavy metal pollution

A heavy metal and soil technology, applied in the restoration of polluted soil, etc., can solve the problems of incomplete clarity, high cost, secondary pollution, etc., and achieve the effect of simple technology, fast speed, and reduction of harmful substance residues

Inactive Publication Date: 2018-07-10
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

[0016] 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 at the same time, it is not clear enough

Method used

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  • Technology for controlling heavy metal pollution of soil and application of technology for controlling heavy metal pollution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Add 1000 grams of amino trimethylene phosphonic acid and 200 grams of citric acid to 50 liters of distilled water, slowly heat to dissolve, and stir slowly. When all is dissolved, add 200 grams of sodium gluconate and 100 grams of potassium sodium tartrate, slowly Stir, after most of it is dissolved, after cooling, add 100 ml of concentrated hydrochloric acid and 100 g of sodium silicate, and stir evenly.

[0029] 2. Add 1000-2000 ml of the product treated in 1 above to a soil column containing 20 kg of soil to wash the heavy metals in the soil column. Before adding the eluent, add 5000 ml of distilled water to the soil column. Fully moisten the soil column.

[0030] 3. After the above 2 treatment, slowly add 1000-2000 ml of the eluent made in the above 1 to the soil column in batches, place a collector under the soil column to collect the soil column eluent, and continue adding the eluent to the soil. In the column, stir the soil in the soil column 6 times with a glass ...

Embodiment 2

[0032] 1. Add 2000 grams of amino trimethylene phosphonic acid and 500 grams of citric acid to 50 liters of distilled water, slowly heat to dissolve, and stir slowly. When all are dissolved, add 500 grams of sodium gluconate and 500 grams of potassium sodium tartrate, and stir slowly After most of it is dissolved, after cooling, add 500 ml of concentrated hydrochloric acid and 500 g of sodium silicate and stir well.

[0033] 2. Add 1500 ml of the product treated in 1 above to a soil column containing 20 kg of soil to wash the heavy metals in the soil column. Before adding the eluent, add 10000 ml of distilled water to the soil column to fully moisten it. Soil pillar.

[0034] 3. Slowly add 1500 ml of the eluent made in the above 1 to the soil column after the above 2 treatment in batches, place a collector under the soil column to collect the soil column eluent, and continue adding the eluent to the soil column. , At the same time, use a glass rod to stir the soil in the soil colu...

Embodiment 3

[0036] 1. Add 5000 grams of amino trimethylene phosphonic acid and 1000 grams of citric acid to 50 liters of distilled water, slowly heat to dissolve, and stir slowly. When all is dissolved, add 1000 sodium gluconate and 1000 grams of potassium sodium tartrate, and stir slowly After most of it is dissolved, after cooling, add 800 ml of concentrated hydrochloric acid and 1000 g of sodium silicate and stir evenly.

[0037] 2. Add 2000 ml of the product treated in 1 above to a soil column containing 20 kg of soil to rinse the heavy metals in the soil column. Before adding the eluent, add 20000 ml of distilled water to the soil column to fully moisten it. Soil pillar.

[0038] 3. After the above 2 treatment, slowly add 2000 ml of the eluent made in the above 1 to the soil column in batches, place a collector under the soil column to collect the soil column eluent, and continue adding the eluent to the soil column. , At the same time, use a glass rod to stir the soil in the soil column...

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Abstract

The invention discloses a technology for controlling heavy metal pollution of soil and application of the technology for controlling heavy metal pollution and belongs to the field of environmental protection. The technology is implemented according to the following steps that amino-trimethyl-phosphonic acid, citric acid, sodium gluconate and seignette salt are added into distilled water, are stirred to be dissolved, and heated to a proper extent to be completely dissolved, then hydrochloric acid and sodium silicate are added, the mixture is stirred to be even, the eluting agent is added into the heavy metal polluted soil, accordingly various heavy metal in the soil can be removed at the same time in an eluting mode, heavy metal pollution of the soil is eliminated, the soil is protected, underground water is protected, and food safety is guaranteed.

Description

Technical field [0001] The invention belongs to the field of environmental protection, and particularly relates to a technology and application for treating soil heavy metal pollution. Background technique [0002] Heavy metals in nature are mainly distributed in the atmosphere, water and soil. The distribution of heavy metals in different systems is different. The sources are divided into natural sources and man-made sources. [0003] Through the analysis and comparison of the heavy metal data of surface dust in the main functional areas of multiple provincial capital cities, the results show that the heavy metal content of surface dust in industrial areas is the highest, the content of heavy metals in surface dust in traffic areas is the lowest, and the content of heavy metals in surface dust in commercial areas and residential cultural and educational areas is medium Level. Among the four functional areas, the elements with large differences in the level of heavy metals in sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/02B09C1/08
CPCB09C1/02B09C1/08
Inventor 吴洪生
Owner 南京怡可帮生态环境科技有限公司
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