Pb-contaminated soil stabilizer and preparation method thereof

A technology of lead-contaminated soil and curing agent is applied in the field of soil remediation to achieve the effects of reducing the dissolution of lead, reducing migration and low production cost

Inactive Publication Date: 2018-04-03
阳艳华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing lead-contaminated soil remediation or disposal methods, the main goal that people pay attention to at present is to reduce the leaching of lead in the lead-contaminated so...

Method used

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  • Pb-contaminated soil stabilizer and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] The lead-contaminated soil solidifying agent of the present embodiment is made of the following raw materials: 30kg of red mud, 20kg of carbide slag, 20kg of fly ash, 10kg of sodium dihydrogen phosphate, 15kg of diatomite, 10kg of superphosphate and fatty alcohol Oxyethylene ether sodium sulfate 15kg.

[0021] The preparation method of the above-mentioned lead-contaminated soil solidifying agent comprises the steps of: taking raw materials of the following weight: 30kg of red mud, 20kg of carbide slag, 20kg of fly ash, 10kg of sodium dihydrogen phosphate, 15kg of diatomaceous earth, 10kg of superphosphate and fat Alcohol polyoxyethylene ether sodium sulfate 15kg, after mixing uniformly, packs, promptly obtains described lead-contaminated soil curing agent.

Embodiment 2

[0023] The solidifying agent for lead-contaminated soil of the present embodiment is made from the following raw materials: 20kg of red mud, 30kg of carbide slag, 15kg of fly ash, 15kg of sodium dihydrogen phosphate, 10kg of diatomite, 15kg of superphosphate and fatty alcohol polymer Oxyethylene ether sodium sulfate 10kg.

[0024] The preparation method of the above-mentioned lead-contaminated soil solidifying agent comprises the steps of: getting raw materials of the following weight: 20kg of red mud, 30kg of carbide slag, 15kg of fly ash, 15kg of sodium dihydrogen phosphate, 10kg of diatomaceous earth, 15kg of superphosphate and fat Alcohol polyoxyethylene ether sodium sulfate 10kg, after mixing uniformly, packs, promptly obtains described lead-contaminated soil curing agent.

Embodiment 3

[0026] The lead-contaminated soil curing agent of the present embodiment is made of the following raw materials: 40kg of red mud, 10kg of carbide slag, 25kg of fly ash, 5kg of sodium dihydrogen phosphate, 20kg of diatomaceous earth, 5kg of superphosphate and fatty alcohol polymer Oxyethylene ether sodium sulfate 20kg.

[0027] The preparation method of the above-mentioned lead-contaminated soil solidifying agent comprises the steps of: getting raw materials of the following weight: 40kg of red mud, 10kg of carbide slag, 25kg of fly ash, 5kg of sodium dihydrogen phosphate, 20kg of diatomaceous earth, 5kg of superphosphate and fat Alcohol polyoxyethylene ether sodium sulfate 20kg, after mixing uniformly, packs, promptly obtains described lead-contaminated soil curing agent.

[0028] The lead-contaminated soil curing agent obtained in Examples 1-3 is used in lead-contaminated soil, as shown in Table 1.

[0029] Table 1 The effect of the lead-contaminated soil solidifying agent o...

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Abstract

The invention discloses a pb-contaminated soil stabilizer and a preparation method thereof and belongs to the technical field of soil remediation. The pb-contaminated soil stabilizer is prepared fromraw materials in parts by weight as follows: 20-40 parts of red mud, 10-30 parts of carbide slag, 15-25 parts of fly ash, 5-15 parts of sodium dihydrogen phosphate, 10-20 parts of diatomite, 5-15 parts of calcium superphosphate and 10-20 parts of polyoxyethylene fatty alcohol sodium sulfate. The invention further discloses the preparation method of the pb-contaminated soil stabilizer. With the adoption of the pb-contaminated soil stabilizer, pb dissolution is reduced, bio-availability and hazardous toxicity of pb are reduced, migration of heavy metal and enrichment of the heavy metal in ecological chains are reduced, and the pb-contaminated soil stabilizer prevents pollution from rebounding with time, can be applied to subgrade bricks and the like and has the characteristics of being economical and environmentally friendly.

Description

technical field [0001] The invention relates to a lead-contaminated soil solidifying agent and a preparation method thereof, belonging to the technical field of soil remediation. Background technique [0002] Soil heavy metal pollution refers to human activities, the content of trace metal elements in the soil exceeds the background value, and the excessive content caused by excessive deposition is collectively referred to as soil heavy metal pollution. Heavy metal pollution in farmland soil is extremely harmful. Heavy metal pollution in soil will not only reduce crop yield and quality, but also enter the human body through the soil-plant system and the food chain, endangering human health and life safety. Soil heavy metal pollution has the characteristics of concealment, hazard lag, long-term nature, and bioaccumulation of heavy metals in the biological chain. These determine that if the understanding and treatment of soil heavy metal pollution are delayed, it will bring un...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09B3/00
CPCC09K17/40B09B3/20
Inventor 阳艳华
Owner 阳艳华
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