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Production method and application of soil heavy metal compound pollution eluting agent

A production method and composite pollution technology, applied in the restoration, application, soil conditioning materials and other directions of polluted soil, can solve problems such as high cost, secondary pollution, incomplete clarity, etc., achieve high speed, reduce harmful substance residues, The effect of simple and easy technology

Inactive Publication Date: 2018-09-11
吴洪生
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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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  • Production method and application of soil heavy metal compound pollution eluting agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Add 1,000-20,000 grams of sodium diacetamide tetraacetate, 500 grams of bis-1,6-hexamethylene triamine pentamethylene phosphonic acid, and 500 grams of sodium citrate in 50 liters of distilled water, slowly heat to dissolve, slowly Stir, add 500 grams of maleic acid-acrylic acid copolymer, 500 grams of sodium silicate, and 1000 grams of sodium pyrophosphate after all are dissolved, stir slowly, after most of them dissolve, after cooling, add 200 milliliters of concentrated hydrochloric acid, and stir evenly.

[0029] 2. Add 2000 ml of the product treated in the above 1 to a soil column containing 50 kg of soil to dissolve and elute the heavy metals in the soil column. Before adding the above mixed eluent, add 6000 ml to the soil column Use distilled water to fully moisten the soil column, and make the soil particles and voids in the soil column evenly distributed without large holes.

[0030]3. Slowly add 2000 ml of the mixed eluent prepared in the above 1 to the soi...

Embodiment 2

[0032] 1. In 50 liters of distilled water, add 10,000 grams of sodium diacetamide tetraacetate, 800 grams of bis-1,6-hexamethylene triamine pentamethylene phosphonic acid, and 1,500 grams of sodium citrate, slowly heat to dissolve, and stir slowly. Add 1500 grams of maleic acid-acrylic acid copolymer, 1000 grams of sodium silicate, and 2000 grams of sodium pyrophosphate after they are completely dissolved, and stir slowly.

[0033] 2. Add 3000 ml of the product treated in the above 1 to a soil column containing 50 kg of soil to dissolve and elute the heavy metals in the soil column. Before adding the above mixed eluent, add 15000 ml to the soil column Use distilled water to fully moisten the soil column, and make the soil particles and voids in the soil column evenly distributed without large holes.

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

Embodiment 3

[0036] 1. Add 20,000 grams of sodium diacetamide tetraacetate, 1,500 grams of bis-1,6-hexamethylenetriaminepentamethylene phosphonic acid, and 2,500 grams of sodium citrate into 50 liters of distilled water, slowly heat to dissolve, and stir slowly. Add 3,500 grams of maleic acid-acrylic acid copolymer, 2,000 grams of sodium silicate, and 3,000 grams of sodium pyrophosphate after they are completely dissolved, and stir slowly.

[0037] 2. Add 5000 ml of the product treated in the above 1 to the soil column containing 50 kg of soil, dissolve and elute the heavy metals in the soil column, and add 25000 ml to the soil column before adding the above mixed eluent Use distilled water to fully moisten the soil column, and make the soil particles and voids in the soil column evenly distributed without large holes.

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

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Abstract

The invention provides a production method and application of a soil heavy metal compound pollution eluting agent and belongs to the field of environment protection. The production method is realizedthrough the following steps: adding diacetamide sodium tetraacetate, bis(hexamethylenetriaminepenta(methylenephosphonic acid)), sodium citrate, a maleic acid-acrylic acid copolymer and sodium pyrophosphate into distilled water; stirring and dissolving; heating properly to completely dissolve the components; then adding hydrochloric acid and sodium silicate and uniformly stirring. The mixture is added into soil polluted by various types of heavy metal to elute and remove the various types of heavy metal in the soil, so that the pollution caused by the various types of heavy metal on the soil iseliminated at the same time, the soil productivity is protected, underground water is protected and the food safety is ensured.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a preparation method and application of a soil heavy metal complex pollution 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 differences...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09C1/02
CPCC09K17/40B09C1/02
Inventor 吴洪生
Owner 吴洪生
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