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Soil restoration agent capable of treating heavy metal pollution and preparation method thereof

A soil remediation agent and heavy metal technology, applied in the field of soil remediation, can solve the problems of ineffective removal of heavy metals, high treatment cost, and destruction of soil organic matter, and achieve the effect of increasing soil organic matter content, simple preparation process, and low cost

Active Publication Date: 2019-03-22
山东省神农生态科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the treatment methods for soil heavy metal pollution are mainly microbial remediation, chemical reduction, physical soil washing, electrodynamic remediation, etc., but these methods have high treatment costs, and the removal effect of heavy metals is not very obvious, and even some It also destroys the organic matter in the soil

Method used

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  • Soil restoration agent capable of treating heavy metal pollution and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A soil remediation agent capable of handling heavy metal pollution is a solid powder soil remediation agent, comprising the following components in parts by weight: 65 parts of modified zeolite powder, 10 parts of fluorite powder, 6 parts of modified chitosan, 14 parts of potassium humate, 5 parts of sodium nitrilotriacetate; wherein, the modified zeolite powder is made by organically modifying the zeolite powder by sodium dodecylsulfonate and acetic acid; the modified Chitosan is a quaternized modified chitosan.

[0023] A kind of preparation method of above-mentioned soil remediation agent that can handle heavy metal pollution, comprises the following steps:

[0024] (1) Preparation of modified zeolite powder: first grind zeolite raw ore into powder to obtain zeolite powder, then mix zeolite powder with sodium dodecylsulfonate and acetic acid, and stir for 3 hours with ultrasonic waves to obtain zeolite powder dispersion liquid; then the zeolite powder dispersion is ...

Embodiment 2

[0029] A soil remediation agent capable of handling heavy metal pollution is a solid powder soil remediation agent, comprising the following components in parts by weight: 35 parts of modified zeolite powder, 18 parts of fluorite powder, 13 parts of modified chitosan, 22 parts of potassium humate, 12 parts of sodium nitrilotriacetate; wherein, the modified zeolite powder is made by organically modifying the zeolite powder by sodium dodecylsulfonate and acetic acid; the modified Chitosan is a quaternized modified chitosan.

[0030] A kind of preparation method of above-mentioned soil remediation agent that can handle heavy metal pollution, comprises the following steps:

[0031] (1) Preparation of modified zeolite powder: first grind zeolite raw ore into powder to obtain zeolite powder, then mix zeolite powder with sodium dodecylsulfonate and acetic acid, and stir for 6 hours with ultrasonic waves to obtain zeolite powder dispersion Then, the zeolite powder dispersion is filte...

Embodiment 3

[0036] A soil remediation agent capable of handling heavy metal pollution is a solid powder soil remediation agent, comprising the following components in parts by weight: 55 parts of modified zeolite powder, 13 parts of fluorite powder, 8 parts of modified chitosan, 17 parts of potassium humate, 7 parts of sodium nitrilotriacetate; wherein, the modified zeolite powder is made by organically modifying the zeolite powder by sodium dodecylsulfonate and acetic acid; the modified Chitosan is a quaternized modified chitosan.

[0037] A kind of preparation method of above-mentioned soil remediation agent that can handle heavy metal pollution, comprises the following steps:

[0038] (1) Preparation of modified zeolite powder: first grind zeolite raw ore into powder to obtain zeolite powder, then mix zeolite powder with sodium dodecylsulfonate and acetic acid, and stir for 5 hours with ultrasonic waves to obtain zeolite powder dispersion Then, the zeolite powder dispersion is filtere...

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Abstract

The invention discloses a soil restoration agent capable of treating heavy metal pollution and a preparation method thereof, and belongs to the technical field of soil restoration. The soil restoration agent is a solid powdery soil restoration agent, and is prepared from the following components in parts by weight: 35 to 65 parts of modified zeolite powder, 10 to 18 parts of fluorite powder, 6 to13 parts of modified chitosan, 14 to 22 parts of potassium humate and 5 to 12 parts of sodium ammonium triacetate, wherein the modified zeolite powder is obtained by carrying out organic modificationon zeolite powder with sodium dodecyl sulfate and acetic acid. Raw materials are subjected to ball milling, and then are dispersed by using ethanol; and next, the powdery soil restoration agent can beobtained through filtration, oven drying and screening. The soil restoration agent provided by the invention, through adding the zeolite powder subjected to the organic modification treatment by using the sodium dodecyl sulfate and the acetic acid and with the compounding effect of the components of the fluorite powder, the sodium ammonium triacetate and the like, has quite obvious removal effects on heavy metals of Cd, Pb, As and Co and the like in soil, and can effectively solve the problem of the heavy metal pollution to the soil.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a soil remediation agent capable of treating heavy metal pollution and a preparation method thereof. Background technique [0002] Soil heavy metal pollution is a relatively serious and common phenomenon in soil pollution. Since heavy metals such as Cd, Pb, As, and Co cannot be decomposed by microorganisms in the soil, they will accumulate in the soil for a long time, which is not conducive to the growth and development of plants. development, and even seriously endanger human health through the food chain. [0003] The causes of heavy metal pollution in soil mainly include natural factors and human factors. Among them, with the modernization of agriculture and the development of industry, the pollution caused by a large amount of heavy metal pollutants artificially discharged to the soil is becoming more and more serious. At present, the treatment methods for soil hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 胡凤巧李风阳刘玉宏邢晓慧田利炯田岗官清梅
Owner 山东省神农生态科技股份有限公司