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Passivation remediation agent for arsenic contaminated soil, preparation method and remediation method

A remediation agent and remediation method technology, applied in the field of soil remediation, can solve the problems of limited effect, long period, small remediation scope, etc., and achieve the effects of low cost, stable properties, and promoting the growth of microorganisms.

Inactive Publication Date: 2018-11-20
北京泷涛环境修复有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems of small remediation range, limited effect and long period in the process of treating arsenic pollution in the prior art, the present invention proposes a passivation remediation agent, preparation method and remediation method for arsenic-contaminated soil

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  • Passivation remediation agent for arsenic contaminated soil, preparation method and remediation method
  • Passivation remediation agent for arsenic contaminated soil, preparation method and remediation method
  • Passivation remediation agent for arsenic contaminated soil, preparation method and remediation method

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Embodiment Construction

[0036] In order to further understand the present invention, the following is attached Figure 1 to Figure 4 The technical solutions of the present invention are described in detail with the embodiments, but it should be understood that these descriptions are only to further illustrate the features and advantages of the present invention, but not to limit the present invention.

[0037] In one embodiment, the present invention provides a passivation remediation agent for arsenic-contaminated soil, and the formula of parts by weight of the passivation remediation agent is:

[0038] 20-30 parts of calcium-based compounds

[0039] Silicon-based compound 30-40 parts

[0040] Humic acid 30-40 parts

[0041] Organic materials 20-30 parts

[0042] Biochar 5-10 parts.

[0043] In one embodiment, the passivation remediation agent provided by the present invention can effectively passivate the arsenic ions in the soil and at the same time can assist the passivation of the activity of other heavy m...

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Abstract

The invention relates to a passivation remediation agent for arsenic contaminated soil. The passivation remediation agent is prepared from components in parts by weight as follows: 20-30 parts of a calcium-based compound, 30-40 parts of a silicon-based compound, 30-40 parts of humic acid, 20-30 parts of an organic material and 5-10 parts of biochar. The invention also relates to a preparation method and a remediation method of the passivation remediation agent for the arsenic contaminated soil. The preparation method comprises steps as follows: the calcium-based compound, the silicon-based compound, the humic acid, the organic material and the biochar are crushed into powder with the granularity smaller than 100 meshes, mixing and stirring are performed until the uniformity of the mixtureis higher than 90%, and the passivation remediation agent is obtained. The passivation remediation agent has the advantages that the remediation cycle is short, the cost is low, the process is simpleto operate, the spectrum is wide, the capacity increasing amount is small, the agent is easy to obtain, threshold for equipment and technicians is low during use and the like.

Description

Technical field [0001] The invention belongs to the technical field of soil remediation, and specifically relates to a passivation remediation agent for arsenic contaminated soil, a preparation method and a remediation method. Background technique [0002] As a Class I carcinogen recognized by the International Agency for Research on Cancer, arsenic mainly comes from the parent material of the soil and various human industrial and agricultural production activities, such as the mining and smelting of arsenic-containing minerals, chemical fertilizers, arsenic-containing pesticides, Use of preservatives, etc. Arsenic can not only pollute water bodies through surface runoff and leaching, but also enter the human body through the food chain, causing greater hidden dangers to human health. [0003] In view of the current status of arsenic pollution in farmland soil and its possible environmental risks, there are currently a variety of remediation technologies, such as engineering measu...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09C1/08
CPCB09C1/08C09K17/40
Inventor 陶盈冰李来庆吴晶晶胡贵省
Owner 北京泷涛环境修复有限公司
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