Consolidation repair agent for contaminated soil and preparation method thereof

A technology of polluted soil and remediation agent, which can be used in the restoration of polluted soil and other directions, and can solve problems such as failure

Active Publication Date: 2018-01-23
HUBEI JBM ENVIRONMENTAL PROTECTION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, none of the above-mentioned consolidating agents are used for remediation of contaminated soil in sewage plants. They are suitable for the treatment of high liquid limit and high humic acid sludge in municipal environments, especially fluid plastics with a humic acid content of up to 70% and a moisture content of up to 80%. sludge, basically ineffective

Method used

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  • Consolidation repair agent for contaminated soil and preparation method thereof
  • Consolidation repair agent for contaminated soil and preparation method thereof
  • Consolidation repair agent for contaminated soil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of consolidation repairing agent related to polluted soil, it is made of the raw materials of following percentage by weight:

[0043]

[0044] A preparation method involving contaminated soil consolidation restoration agent, the steps are:

[0045]A. Soak steel slag, purified diatomite and iron ore tailings with 15% (volume concentration) hydrochloric acid for 3 or 4 or 5 hours respectively, in order to remove the inert components in steel slag, diatomite and iron ore tailings Erosion treatment is carried out, because steel slag and iron ore tailings are solid wastes produced by high temperature process, and the amorphous phase structure composed of calcium, magnesium, silicon and aluminum metal oxidation is dense on the surface, which is not conducive to the activation of activity. After being etched with hydrochloric acid, it is beneficial to other The activity is stimulated, and the acid soaking is beneficial to increase the lattice depression and defect r...

Embodiment 2

[0055] Take the sludge from WISCO Industrial Port Sewage Plant, mix it with silt according to the mass fraction of 12%, the mold is consolidated after mixing, demolded after 1 day, and the softening coefficient is measured to be 0.98 after curing for 7 days; the chemical erosion coefficient of acid, alkali and salt medium is 1.05; The permeability coefficient reaches 6*10 －8 cm / s. (see Example 3)

Embodiment 3

[0056] Take the polluted soil in Huanggang Wuxing Metal Products Factory, mix it with silt according to the mass fraction of 8%, the mold is consolidated after mixing, demolded after 1 day, and the softening coefficient is measured to be 0.99 after 7 days of curing; the chemical erosion coefficient of acid, alkali and salt medium is 1.02 ;Permeability up to 4*10 －8 cm / s. (see Example 4)

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Abstract

The invention discloses a contaminated soil consolidation remediator and a preparation method. The remediator is composed of purified infusorial earth, hot splashing steel slag pulverized powder, iron ore tailing pulverized powder, superfine slag powder, calcium oxide, triethanolamine, sodium formate and sodium chloride according to a certain proportion. The method includes the steps that A, steel slag, the purified infusorial earth and iron ore tailings are soaked respectively through hydrochloric acid, and the treated steel slag, infusorial earth and iron ore tailings are mixed so as to obtain a mixture A; B, the steel slag, the infusorial earth and the iron ore tailings are levigated respectively through a ball mill; C, the superfine slag powder, the calcium oxide, the triethanolamine, the sodium formate and the sodium chloride are mixed sequentially or randomly so as to obtain a mixture B; and D, the mixture A and the mixture B are added into a sealed three-axis agitator to be agitated, mixing is performed after film laminating and packaging, and the soil consolidation remediator is obtained. According to the contaminated soil consolidation remediator, the formula is easy to prepare; operation is easy and convenient; the treatment effect is good; the production cost is low; secondary soil contamination is avoided.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and more specifically relates to a consolidation restoration agent related to polluted soil, and also relates to a preparation method of the consolidation restoration agent related to polluted soil. Background technique [0002] With the aggravation of industrial and urban pollution and the increase in the types and quantities of agricultural chemicals, the soil pollution in our country is becoming more and more serious. The degree of pollution is increasing and the area is expanding year by year. According to the environmental protection monitoring system of the Ministry of Agriculture, the survey of about 5.48 million hectares of soil in 320 seriously polluted areas in 24 provinces and cities nationwide found that the area of ​​farmland agricultural products polluted exceeding the standard accounted for 20% of the farmland area in polluted areas, of which pollution accounted fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08
CPCB09C1/08
Inventor 朱书景吴水清吴坤若
Owner HUBEI JBM ENVIRONMENTAL PROTECTION SCI & TECH CO LTD
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