Soil stabilizer for heavy metal lead contamination and preparation method

A technology of lead-contaminated soil and stabilizer, applied in the field of environmental remediation, can solve the problems of insignificant remediation effect of heavy metal lead pollution in soil, inconspicuous remediation of lead pollution from secondary pollution, etc., so as to reduce the risk of water and soil environmental pollution and improve the convenience of use. Sexual, easy-to-use effects

Pending Publication Date: 2019-10-08
浙江中地净土科技有限公司
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Problems solved by technology

[0010] The purpose of the present invention is to solve the problems in the background technology that the remediation effect of soil heavy metal lead pollution is not significant, there is secondary pollution and the problem of low concentration effective lead pollution remediation is not significant, and a kind of heavy metal contaminated soil remediation material and its Repair method

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  • Soil stabilizer for heavy metal lead contamination and preparation method

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Embodiment Construction

[0036] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] A preparation method of heavy metal lead polluted soil stabilizer, comprising the following steps:

[0038] (1) Preparation of raw materials: Grinding dry clay minerals, zeolite, and slaked lime respectively into raw material powders, wherein at least 70% of the particles in the raw material powders have a particle size of 3-30um by number;

[0039] (2) Mixed raw materials: uniformly stir the raw material powders of 65 parts of clay minerals, 20 parts of zeolite, and 15 parts of slaked lime to obtain mixed raw materials;

[...

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Abstract

The invention discloses a soil stabilizer for heavy metal lead contamination and a preparation method, and relates to the technical field of environmental remediation. The preparation method includesthe following steps: (1) grinding dry clay mineral, zeolite and slaked lime to obtain raw material powder; (2) evenly and proportionally stirring the raw material powder to obtain a mixed raw material; (3) subjecting the mixed raw material to active purging treatment and heat treatment to obtain the modified soil stabilizer. The soil stabilizer and the preparation method have the advantages that the natural zeolite, the clay mineral and the slaked lime are used as main components of the soil stabilizer, the surface of the mineral is modified by high-temperature heat modification, the adsorption efficiency and pertinence of other minerals such as the zeolite on heavy metal lead are improved, and the soil stabilizer is green and environmentally friendly and does not cause secondary pollutionwhen being added to the soil.

Description

technical field [0001] The invention relates to the technical field of environmental remediation, in particular to a heavy metal lead-contaminated soil stabilizer and a preparation method thereof. Background technique [0002] Soil is the main material basis for human survival. However, due to the increasing mining, smelting, processing and commercial manufacturing activities of heavy metals, heavy metals enter the soil and cause serious environmental pollution. Human industrial activities, such as: mineral mining , metal smelting, discharge of domestic wastewater, use of chemical fertilizers and pesticides, etc., have greatly accelerated the cycle of heavy metals, resulting in an increasing trend of heavy metals in the environment, increasing the harm of heavy metals to human health. When heavy metals entering the environment exceed their capacity in the environment, heavy metal pollution can occur. Heavy metal pollutants are persistent pollutants, and the harm to the envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/08B09C1/08C09K109/00
CPCB09C1/08C09K17/08C09K2109/00
Inventor 陈林沈志东
Owner 浙江中地净土科技有限公司
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