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Method for treating arsenic contaminants by using material containing calcium and aluminum

A technology of pollutants and aluminum materials, applied in water/sewage treatment, chemical instruments and methods, solid waste removal, etc., can solve problems such as polluted water sources, soil, environment, high price, and inability to remelt

Inactive Publication Date: 2015-07-29
江苏佳源铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of these stabilizers is relatively high, so it is of great practical significance to find cheap stabilizers to obtain greater economic benefits
[0007] Solid-phase calcium-aluminum waste, due to processing costs and other reasons, generally cannot be melted back, so it has to be piled up and gradually oxidized, thereby polluting water sources, soil, and the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for treating arsenic pollutants with calcium-aluminum-containing materials according to the present invention, the method has the following process:

[0026] 1) Calcium-aluminum materials and arsenic pollutants, grinding calcium-aluminum materials and arsenic pollutants into powder;

[0027] 2) Calcium-aluminum-containing materials and arsenic pollutants are weighed at a dry weight ratio of 1:20-1:40;

[0028] 3) After weighing, disperse the arsenic pollutants into the aqueous solution, then add the calcium-aluminum-containing material into the arsenic pollutant dispersion, stir at room temperature for 24 hours, and perform solid-liquid separation after aging; the immobilized arsenic can be obtained or arsenate ion-based Ca-Al-LDHs for stabilization of arsenic pollutants.

Embodiment 2

[0030] A method for treating arsenic pollutants with calcium-aluminum-containing materials according to the present invention, the method has the following process:

[0031] 1) Calcium-aluminum materials and arsenic pollutants, grinding calcium-aluminum materials and arsenic pollutants into powder;

[0032] 2) Calcium-aluminum-containing materials and arsenic pollutants are weighed at a dry weight ratio of 1:20-1:40;

[0033] 3) After weighing, disperse the arsenic pollutants into the aqueous solution, then add the calcium-aluminum material into the dispersion of arsenic pollutants, stir at room temperature for 30 hours, leave it to age and then separate the solid and liquid; the fixed arsenic can be obtained or arsenate ion-based Ca-Al-LDHs for stabilization of arsenic pollutants.

Embodiment 3

[0035] A method for treating arsenic pollutants with calcium-aluminum-containing materials according to the present invention, the method has the following process:

[0036] 1) Calcium-aluminum materials and arsenic pollutants, grinding calcium-aluminum materials and arsenic pollutants into powder;

[0037] 2) Calcium-aluminum-containing materials and arsenic pollutants are weighed at a dry weight ratio of 1:20-1:40;

[0038] 3) After weighing, disperse the arsenic pollutant into the aqueous solution, then add the calcium-aluminum material into the arsenic pollutant dispersion, stir at room temperature for 36 hours, leave it to age and then separate the solid and liquid; the fixed arsenic can be obtained or arsenate ion-based Ca-Al-LDHs for stabilization of arsenic pollutants.

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PUM

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Abstract

The present invention discloses a method for treating arsenic contaminants by using a material containing calcium and aluminum. The method comprises: grinding a material containing calcium and aluminum and arsenic contaminants into powder, weighing the material containing calcium and aluminum and the arsenic contaminants according to a dry weight ratio of 1:20-1:40, dispersing the arsenic contaminants in an aqueous solution, adding the material containing calcium and aluminum to the arsenic contaminant dispersing solution, stirring for 24 h at a room temperature, carrying out placing aging, and carrying out solid-liquid separation so as to obtain the arsenic or arsenate ion-fixed Ca-Al-LDHs capable of carrying out a stabilizing treatment on arsenic contaminants. The method of the present invention has the following advantages that: the used stabilizer material containing calcium and aluminum is cheap, easily-available and stable and is used for stably treating the arsenic contaminants, and the important economic, environmental and social significance is provided.

Description

[0001] technical field [0002] The invention is a method for treating arsenic pollutants with calcium-aluminum materials, and relates to effective utilization of calcium-aluminum materials and arsenic pollution. [0003] The dye treatment process belongs to the technical field of waste recycling and stabilization of arsenic pollutants. Background technique [0004] Arsenic pollution has caused great harm to the environment. If its toxic substances are lost to the environment from waste, it will cause great harm to the environment. [0005] into serious pollution. Arsenic is a metal substance that can form a series of highly toxic compounds. Arsenic can be absorbed by the human body through the skin, respiratory tract and digestive tract, which can cause neurasthenia syndrome, polyneuropathy and skin and mucous membrane lesions, and can cause lung cancer and skin cancer. Wait. The discharge of arsenic increases the toxicity of wastewater, and improper disposal of arsen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C02F1/62C02F1/52
Inventor 王静霞
Owner 江苏佳源铝业有限公司
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