Preparation method of leaching liquid for repairing heavy metal polluted soil

A technology for polluted soil and heavy metals, applied in the field of soil remediation, can solve the problems of limited effect and no good artificial surfactants.

Inactive Publication Date: 2016-05-04
缪琼华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the leaching and remediation of heavy metal-contaminated soil, artificial surfactants have no good effect, while biosurfactant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of preparation method of the eluent of repairing heavy metal polluted soil, dioctyl sebacate, 4-(2,6,6-trimethyl-2-cycloocten-1-yl)-3-butene -2-ketone, 1,4-dimethylpiperazine, 2-pyridinemethanol, oleanal, salicin, 4-aminoisoquinoline, alkyl polyoxyethylene ether acetate were added to the stirring Add deionized water and polycarboxylates to the flask with a thermometer, a thermometer and a reflux condenser, raise the temperature to 850°C, pass through nitrogen protection, stir for 45-75min, then slowly add ammonium citrate dropwise, and the dropwise addition is completed in about 2 hours. After 2 hours of heat preservation, add sodium alginate, sodium ethoxide, polyoxypropylene glycol, and fatty alcohol polyoxyethylene ether, react for another 4-7 hours, and cool to room temperature to obtain the eluent for repairing heavy metal-contaminated soil;

[0044] The concrete component content of the eluent of gained remediation heavy metal polluted soil is as follows in...

Embodiment 2

[0062]A kind of preparation method of the eluent of repairing heavy metal polluted soil, dioctyl sebacate, 4-(2,6,6-trimethyl-2-cycloocten-1-yl)-3-butene -2-ketone, 1,4-dimethylpiperazine, 2-pyridinemethanol, oleanal, salicin, 4-aminoisoquinoline, alkyl polyoxyethylene ether acetate were added to the stirring Add deionized water and polycarboxylates to the flask with a thermometer, a thermometer and a reflux condenser, raise the temperature to 850°C, pass through nitrogen protection, stir for 45-75min, then slowly add ammonium citrate dropwise, and the dropwise addition is completed in about 2 hours. After 2 hours of heat preservation, add sodium alginate, sodium ethoxide, polyoxypropylene glycol, and fatty alcohol polyoxyethylene ether, react for another 4-7 hours, and cool to room temperature to obtain the eluent for repairing heavy metal-contaminated soil;

[0063] The concrete component content of the eluent of gained remediation heavy metal polluted soil is as follows in ...

Embodiment 3

[0081] A kind of preparation method of the eluent of repairing heavy metal polluted soil, dioctyl sebacate, 4-(2,6,6-trimethyl-2-cycloocten-1-yl)-3-butene -2-ketone, 1,4-dimethylpiperazine, 2-pyridinemethanol, oleanal, salicin, 4-aminoisoquinoline, alkyl polyoxyethylene ether acetate were added to the stirring Add deionized water and polycarboxylates to the flask with a thermometer, a thermometer and a reflux condenser, raise the temperature to 850°C, pass through nitrogen protection, stir for 45-75min, then slowly add ammonium citrate dropwise, and the dropwise addition is completed in about 2 hours. After 2 hours of heat preservation, add sodium alginate, sodium ethoxide, polyoxypropylene glycol, and fatty alcohol polyoxyethylene ether, react for another 4-7 hours, and cool to room temperature to obtain the eluent for repairing heavy metal-contaminated soil;

[0082] The concrete component content of the eluent of gained remediation heavy metal polluted soil is as follows in...

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PUM

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Abstract

The invention relates to a preparation method of a leaching liquid for repairing heavy metal polluted soil; the method comprises the steps: putting dioctyl sebacate, 4-(2,6,6-trimethyl-2-cyclooctene-1-yl)-3-butene-2-one, 1,4-dimethyl piperazine, 2-pyridinemethanol, oleanolic aldehyde, salicin, 4-isoquinolinamine and alkyl polyoxyethylene ether acetate into a flask provided with a stirrer, a thermometer and a reflux condensing tube, adding deionized water and polycarboxylic acid salt, heating up to 850 DEG C, introducing nitrogen for protection, and stirring for 45-75 min; and then slowly dropwise adding ammonium citrate, after carrying out heat preservation for 2 h, adding sodium alginate, sodium ethoxide, polyoxypropylene diol and fatty alcohol polyoxyethylene ether, then carrying out a reaction for 4-7 h, cooling to room temperature, and thus obtaining the leaching liquid for repairing the heavy metal polluted soil. The leaching liquid provided by the invention can effectively remove organic pollutants in the soil while repairing the heavy metal contaminated soil, thereby greatly reducing the soil repairing cost.

Description

technical field [0001] The invention relates to the field of soil remediation, in particular to a method for preparing a leachate for remediating heavy metal-contaminated soil. Background technique [0002] With the rapid development of urban industrialization, industrial and agricultural pollution of urban soil and groundwater has gradually become serious, the soil structure and ecological environment have been severely damaged, and the quality of groundwater has deteriorated. Therefore, soil remediation is an important task to be solved urgently. According to the 2014 "National Soil Pollution Survey Bulletin", the soil in my country is generally polluted, and the soil pollution in some areas is serious. The primary pollution is heavy metal pollution, followed by organic pollution. And the pollution in the soil is often not a single pollutant, but a complex pollution with multiple pollutions coexisting, especially in areas where industrial development is common, heavy meta...

Claims

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Application Information

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IPC IPC(8): C09K17/32A62D3/33A62D101/43
CPCC09K17/32A62D3/33A62D2101/43
Inventor 缪琼华
Owner 缪琼华
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