Heavy metal polluted crystallization encapsulated stabilizing agent and its application method

A technology of stabilizer and heavy metal chelating agent is applied in the field of resources and environment, and achieves the effects of simple technical solution, low cost and excellent stabilization effect

Active Publication Date: 2012-10-17
南京清科中晟环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the difficult technical problem of heavy metal pollution in soil in the prior art, and provides a heavy metal pollution crystallization encapsulation stabilizer with low cost, good effect, simple implementation and favorable promotion and its use method

Method used

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  • Heavy metal polluted crystallization encapsulated stabilizing agent and its application method
  • Heavy metal polluted crystallization encapsulated stabilizing agent and its application method
  • Heavy metal polluted crystallization encapsulated stabilizing agent and its application method

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Embodiment 1

[0032] CCT01: The stabilizer is composed of the following components by mass ratio, phosphate 15%, heavy metal chelating agent 3%, sulphoaluminate cement 22%, sepiolite 60%, the total of its raw materials is 100%.

Embodiment 2

[0034] CCT01: The stabilizer is composed of the following components by mass ratio, phosphate 23%, heavy metal chelating agent 4%, aluminate cement 25%, montmorillonite 48%, and the sum of its raw materials is 100%.

Embodiment 3

[0036] CCT02: The stabilizer is composed of the following components by mass ratio, iron-based salts are preferably 10% iron sulfate, 50% calcium peroxide, and 40% sepiolite, and the total of the raw materials is 100%.

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Abstract

The invention relates to a heavy metal polluted crystallization encapsulated stabilizing agent and its application method, which is characterized in that the stabilizing agent comprises the following components by mass ratio: 15-25% of phosphate or sulfate, 1%-5% of heavy metal chelating agent, 20-40% of cementitious material, 30-60% of clay minerals, and the components for the sum is 100%. Compared with the prior art, the invention has the advantages of simple technical scheme, good effect, low cost and easy operation of implementation method, the leached toxicity of heavy metal in soil can reach the national standards after implementing the scheme, and the processed soil enables resource recycling. According to the invention, a pre-determination and pretreatment mode is used to reach the excellent stable effect on a plurality of heavy metal pollution.

Description

Technical field [0001] The present invention is a resource and environmental technology field. The specifics involve a soil repair technology, especially the stabilizer and the use method of a heavy metal pollution crystallization package. Background technique [0002] Soil is the material foundation that humans live in. With the acceleration of my country's industrialization and urbanization process, urban industrial enterprises have left a large amount of pollution land after the relocation of urban industrial enterprises. Among them, heavy metal pollution in the soil is a typical type of pollutant type in the soil. Chromium, lead, mercury, arsenic, copper, zinc, etc. are more common heavy metal pollution. The accumulation of harmful metals in the soil will poison soil and plant systems. It affects the safety of agricultural products and pose a serious threat to human and animal health through the food chain. [0003] The pollution treatment and repair of heavy metals in the so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K17/08C09K17/10B09C1/00B09C1/08A62D3/33A62D101/43
Inventor 王湘徽郭中豪
Owner 南京清科中晟环境技术有限公司
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