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Method for eliminating combined pollution of heavy metal in soil and application

A composite pollution and heavy metal technology, applied in the restoration, application, soil conditioning materials and other directions of polluted soil, can solve the problems of incomplete clarity, secondary pollution, high cost, achieve simple and easy technology, reduce harmful substances residues, fast effect

Inactive Publication Date: 2018-09-04
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

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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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  • Method for eliminating combined pollution of heavy metal in soil and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Add 1000-20000 grams of sodium ethylenediamine di-o-hydroxyphenyl acetate, 500 grams of 2-phosphonic acid butane-1,2,4-tricarboxylic acid, and 500 grams of polyepoxysuccinic acid in 50 liters of distilled water Sodium, slowly heat to dissolve, stir slowly, add 500 grams of sodium silicate, 500 grams of sodium polyaspartate after all dissolve, stir slowly, after most of them dissolve, after cooling, add 200 ml of concentrated hydrochloric acid, stir uniform.

[0029] 2. Add 2000 milliliters of the above-mentioned 1-treated product to a soil column containing 50 kilograms of soil, and wash the heavy metals in the soil column. Before adding the above-mentioned mixed eluent, add 8000 milliliters of distilled water to the soil column. Fully moisten the soil column.

[0030]3. Slowly add 2000 ml of the mixed eluent prepared in the above 1 in batches to the soil column after the above 2 treatment, place a collector under the soil column to collect the eluate from the soil ...

Embodiment 2

[0032] 1. In 50 liters of distilled water, add 10,000 grams of ethylenediamine di-o-hydroxyphenyl acetate, 800 grams of 2-phosphonic acid butane-1,2,4-tricarboxylic acid, 1500 grams of polyepoxysuccinate sodium, Slowly heat to dissolve, stir slowly, add 1500 grams of sodium silicate and 800 grams of sodium polyaspartate after all dissolve, and stir slowly, after most of them are dissolved, after cooling, add 500 ml of concentrated hydrochloric acid, and stir evenly.

[0033] 2. Add 3000 ml of the above-mentioned 1-treated product to a soil column containing 50 kg of soil, and wash the heavy metals in the soil column. Before adding the above mixed eluent, add 10000 ml of distilled water to the soil column. Fully moisten the soil column.

[0034] 3. Slowly add 3000 ml of the mixed eluent prepared in the above 1 to the soil column in batches after the above 2 treatment, place a collector under the soil column to collect the eluent from the soil column, and continue to add the elu...

Embodiment 3

[0036] 1. In 50 liters of distilled water, add 20,000 grams of sodium ethylenediamine di-o-hydroxyphenyl acetate, 1,500 grams of 2-phosphonic acid butane-1,2,4-tricarboxylic acid, 2,500 grams of sodium polyepoxysuccinate, Slowly heat to dissolve, stir slowly, add 3500 grams of sodium silicate and 1000 grams of sodium polyaspartate after all dissolve, stir slowly, after most of them are dissolved, after cooling, add 1000 milliliters of concentrated hydrochloric acid, stir evenly.

[0037] 2. Add 4000 ml of the above-mentioned 1-treated product to a soil column containing 50 kg of soil, and wash the heavy metals in the soil column. Before adding the above mixed eluent, add 20000 ml of distilled water to the soil column. Fully moisten the soil column.

[0038] 3. Slowly add 4000 ml of the mixed eluent prepared in the above 1 in batches to the soil column after the above 2 treatment, place a collector under the soil column to collect the eluent from the soil column, and continue t...

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Abstract

The invention discloses a method for eliminating combined pollution of heavy metal in soil and application and belongs to the field of environmental protection. The technology is realized through thefollowing steps: adding ethylenediamine di-o-hydroxyphenyl sodium acetate, 2-phosphonobutane-1,2,4-tricarboxylic acid, polyepoxy sodium succinate, sodium silicate and sodium polyaspartate into distilled water; stirring the components and dissolving the components; appropriately heating the components to enable the components to be completely dissolved; then adding hydrochloric and sodium polyacrylate into the components; performing uniform stirring to obtain a mixture; and adding the mixture into the soil polluted with various heavy metal so as to rinse and remove the various heavy metal in the soil, and thus pollution of the heavy metal in the soil is eliminated, the soil is protected, underground water is protected, and the food security is ensured.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a method and application for controlling soil heavy metal compound 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, and the sources are divided into natural sources and artificial sources. [0003] Through the analysis and comparison of the heavy metal data in the surface dust of the main functional areas of several provincial capital cities, the results show that the heavy metal content in the surface dust of industrial areas is the highest, the content of heavy metals in the surface dust of traffic areas is the lowest, and the content of heavy metals in the surface dust of commercial areas and residential cultural and educational areas is in the middle. Level. Zn and Pb are the elements with greater differences in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/02C09K17/40
CPCB09C1/02C09K17/40
Inventor 吴洪生
Owner 南京怡可帮生态环境科技有限公司
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