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Production technology and application of high-efficiency heavy-metal eluent for soil

A production technology and heavy metal technology, applied in the field of high-efficiency soil heavy metal eluent production, can solve problems such as high cost, secondary pollution, incomplete clarity, etc., and achieve the effects of fast speed, reduction of harmful substance residues, and simple and easy technology.

Inactive Publication Date: 2018-08-10
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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  • Production technology and application of high-efficiency heavy-metal eluent for soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Add 800 grams of ethylenediamine disuccinic acid to 100 liters of distilled water, heat slowly to dissolve, and stir slowly. After it is completely dissolved, add 300 grams of ammonium citrate, 200 grams of glycolic acid, 100 grams of aminotriacetic acid, 100 grams of ethylenediaminetetraacetic acid, stir slowly, after most of them dissolve, add hydroxyethylethylenediaminetriacetic acid, continue to react for 10 minutes, after cooling, add 100 milliliters of concentrated hydrochloric acid, 50 grams of potassium chloride, stir well Ready-made product.

[0030] 2. Add 1000 ml of the product treated in the above 1 to a soil column containing 20 kg of soil, and wash the heavy metals in the soil column. Before adding the eluent, add 5000 ml of distilled water to the soil column to fully moisten it. soil column.

[0031]3. Slowly add 1000 ml of eluent in batches to the soil column after the above 2 treatments, place a collector under the soil column to collect the eluate ...

Embodiment 2

[0034] 1. Add 1,000 grams of ethylenediamine disuccinic acid to 100 liters of distilled water, heat slowly to dissolve, and stir slowly. After it is completely dissolved, add 500 grams of ammonium citrate, 500 grams of glycolic acid, 5,000 grams of aminotriacetic acid, 200 grams of ethylenediaminetetraacetic acid, stir slowly, after most of them dissolve, add hydroxyethylethylenediaminetriacetic acid, continue the reaction for 10 minutes, after cooling, add 100-500 milliliters of concentrated hydrochloric acid, 100 grams of potassium chloride, Stir well and serve as product.

[0035] 2. Add 2,000 ml of the product treated in the above 1 to a soil column containing 20 kg of soil, and wash the heavy metals in the soil column. Before adding the eluent, add 10,000 ml of distilled water to the soil column to fully moisten it. soil column.

[0036] 3. Slowly add 2000 ml of eluent in batches to the soil column after the above 2 treatments, place a collector under the soil column to ...

Embodiment 3

[0039] 1. Add 5,000 grams of ethylenediamine disuccinic acid to 100 liters of distilled water, heat slowly to dissolve, and stir slowly. After it is completely dissolved, add 1,000 grams of ammonium citrate, 800 grams of glycolic acid, 1,000 grams of aminotriacetic acid, 500 grams of ethylenediaminetetraacetic acid, stir slowly, after most of them dissolve, add hydroxyethylethylenediaminetriacetic acid, continue to react for 10 minutes, after cooling, add 500 milliliters of concentrated hydrochloric acid, 500 grams of potassium chloride, stir well Ready-made product.

[0040] 2. Add 3000 ml of the product treated in the above 1 to a soil column containing 20 kg of soil, and wash the heavy metals in the soil column. Before adding the eluent, add 15000 ml of distilled water to the soil column to fully moisten it soil column.

[0041] 3. Slowly add 3000 ml of eluent in batches to the soil column after the above 2 treatments, place a collector under the soil column to collect the...

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Abstract

The invention discloses a production technology and application of a high-efficiency heavy-metal eluent for soil, and belongs to the field of environmental protection. The technology is realized by the following steps: adding ethylenediamine disuccinic acid, ammonium citrate, glycolic acid, nitrilotriacetic acid, hydroxyethyl ethylenediamine triacetic acid and ethylenediamine tetraacetic acid intodistilled water, carrying out stirring for dissolving, carrying out proper heating for full dissolving, then adding hydrochloric acid and potassium chloride, and uniformly carrying out stirring to obtain the heavy-metal eluent. The heavy-metal eluent can applied to soil polluted by heavy metals, and can remove the heavy metals in the soil by leaching, thereby eliminating the pollution of the heavy metals to the soil, protecting the soil, protecting underground water and protecting food safety.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a production technology and application of a high-efficiency soil heavy metal eluent. 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 difference...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09C1/08
CPCC09K17/40B09C1/08
Inventor 吴洪生
Owner 南京怡可帮生态环境科技有限公司
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