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Treatment method of heavy metal cadmium pollution

A treatment method, cadmium pollution technology, which is applied in the field of heavy metal cadmium pollution treatment, can solve the problems such as the inability to ensure the stability of heavy metals for a long time, achieve good curing and stabilization effects, not easy to migrate, and reduce hazards

Inactive Publication Date: 2019-06-25
北京净界新宇环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some curing stabilizers use a chelating reaction mechanism in the curing of heavy metals, but there is a problem that the chelating technology cannot guarantee the stability of heavy metals for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The present embodiment provides a kind of processing method of heavy metal cadmium pollution, comprises the following steps:

[0023] Step S1, crushing the cadmium-containing slag to obtain cadmium-containing slag powder. Specifically, the particle size of the cadmium-containing slag powder is 100 mesh, which facilitates the dissolution of cadmium ions in the slag.

[0024] In step S2, lime is added to the cadmium-containing slag powder and mixed uniformly to obtain a cadmium-containing slag mixture. Among them, the weight ratio of cadmium-containing slag powder to lime is 10:1.

[0025] Step S3, adding an alkaline calcium activator, a curing agent, an acidic substance, a microbial complex agent and water to the cadmium-containing slag mixture, and mixing to obtain a solidified mixture, which is cured and formed to obtain a cured product. Wherein, the weight ratio of the cadmium-containing slag mixture, the alkaline calcium activator, the curing agent and the microbia...

Embodiment 2

[0030] The present embodiment provides a kind of processing method of heavy metal cadmium pollution, comprises the following steps:

[0031] Step S1, crushing the cadmium-containing slag to obtain cadmium-containing slag powder. Specifically, the particle size of the cadmium-containing slag powder is 80 mesh, which facilitates the dissolution of cadmium ions in the slag.

[0032] In step S2, lime is added to the cadmium-containing slag powder and mixed uniformly to obtain a cadmium-containing slag mixture. Among them, the weight ratio of cadmium-containing slag powder to lime is 10:2.

[0033] Step S3, adding an alkaline calcium activator, a curing agent, an acidic substance, a microbial complex agent and water to the cadmium-containing slag mixture, and mixing to obtain a solidified mixture, which is cured and formed to obtain a cured product. Wherein, the weight ratio of the cadmium-containing slag mixture, the alkaline calcium activator, the curing agent and the microbial...

Embodiment 3

[0038] The present embodiment provides a kind of processing method of heavy metal cadmium pollution, comprises the following steps:

[0039] Step S1, crushing the cadmium-containing slag to obtain cadmium-containing slag powder. Specifically, the particle size of the cadmium-containing slag powder is 60 mesh, which facilitates the dissolution of cadmium ions in the slag.

[0040] In step S2, lime is added to the cadmium-containing slag powder and mixed uniformly to obtain a cadmium-containing slag mixture. Among them, the weight ratio of cadmium-containing slag powder to lime is 10:1.5.

[0041] Step S3, adding an alkaline calcium activator, a curing agent, an acidic substance, a microbial complex agent and water to the cadmium-containing slag mixture, and mixing to obtain a solidified mixture, which is cured and formed to obtain a cured product. Wherein, the weight ratio of the cadmium-containing slag mixture, the alkaline calcium activator, the curing agent and the microbi...

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Abstract

The invention belongs to the technical field of heavy metal pollution treatment, and discloses a treatment method of heavy metal cadmium pollution. The method comprises the following steps: S1, crushing cadmium-containing slag to obtain cadmium-containing slag powder; S2, adding lime to the cadmium-containing slag powder; and uniformly mixing to obtain a cadmium-containing slag mixture; and S3, adding an alkaline calcium activating agent, a curing agent, an acidic substance, a microbial complex microbial agent and water to the cadmium-containing slag mixture; mixing to obtain a curing mixture;and curing the curing mixture to form a curing product. according to the method, cadmium ions in the slag can be fully precipitated so as to enter a stable chemical combination state; the cadmium compound in a stable state is wrapped and cured, and thus good curing and stabilizing effects are achieved; in addition, the cadmium ions are hard to dissolve and transfer, so that the damage of cadmiumto the environment and the ecological system is reduced.

Description

technical field [0001] The invention belongs to the technical field of heavy metal pollution control, and in particular relates to a treatment method for heavy metal cadmium pollution. Background technique [0002] Slag is a by-product of the blast furnace ironmaking process. Slag contains a lot of heavy metals. Heavy metal pollution has a wide range of pollution, long duration, hidden pollution, and cannot be biodegraded. It may continue to accumulate in organisms through the food chain. The characteristics of accumulation in the human body and endangering health, so heavy metal pollution has increasingly attracted people's attention. When the environment is polluted by heavy metal cadmium, cadmium may be enriched in the organism, and cadmium binds to protein molecules containing hydroxyl, amino, and sulfhydryl groups in the organism, which can inhibit many enzyme systems, thereby affecting the enzyme systems in liver and kidney organs normal function. [0003] For the po...

Claims

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Application Information

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IPC IPC(8): B09B3/00
Inventor 秦凯宁红创孔维轩
Owner 北京净界新宇环保科技有限公司
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