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Treatment method of dissolved slag containing zinc and lead

A treatment method and solution technology, applied in the direction of protection devices against harmful chemicals, can solve problems such as environmental risks and safety hazards, high leaching content, environmental quality impact, etc., and achieve the effect of reducing risks and safety hazards.

Inactive Publication Date: 2017-11-17
GUANGXI YUANJIANG RUBBERLITH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oxidized slag contains harmful substances such as zinc and lead. After testing, it is found that the leached content of harmful substances such as zinc and lead in the waste slag is too high, which belongs to hazardous waste. If it is discharged directly without treatment, it will inevitably affect the quality of the environment. It even brings irreversible harm to people's living space and human health, and has great environmental risks and safety hazards

Method used

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  • Treatment method of dissolved slag containing zinc and lead
  • Treatment method of dissolved slag containing zinc and lead
  • Treatment method of dissolved slag containing zinc and lead

Examples

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Effect test

Embodiment 1

[0014] A method for processing dissolved slag containing zinc and lead, the method comprising the following steps:

[0015] A. Add the dissolved slag and barium sulfide solution to the reactor under stirring conditions, and use pH test paper to detect the pH of the material in the reactor. If the pH test paper shows that the pH of the material cannot reach pH=14, pass Adjust the addition amount of these two reactants so that the pH is not lower than pH=14, and the time is 10 minutes;

[0016] B. After the reaction in step A, continue to add the dissolved slag and barium sulfide solution to the reactor under stirring conditions, and use pH test paper to detect the pH of the material in the reactor. If it is pH test paper, it will show that the pH of the material is at 7 ≤pH<9, adjust the amount of these two reactants so that the pH is within the range of 7≤pH<9, and the time is 10 minutes;

[0017] C. After the reaction in step B, continue to add the dissolved slag and barium ...

Embodiment 2

[0025] A method for processing dissolved slag containing zinc and lead, the method comprising the following steps:

[0026] A. Add the dissolved slag and sodium sulfide solution to be processed into the reactor under stirring conditions, and use pH test paper to detect the pH of the material in the reactor. If the pH test paper shows that the pH of the material cannot reach pH=14, then pass Adjust the addition amount of these two reactants so that the pH is not lower than pH=14, and the time is 15 minutes;

[0027] B. After the reaction in step A, continue to add the dissolved slag and sodium sulfide solution to the reactor under stirring conditions, and use pH test paper to detect the pH of the material in the reactor. If the pH test paper detects that the pH of the material is at 7 ≤pH<9, adjust the amount of these two reactants so that the pH is within the range of 7≤pH<9, and the time is 10 minutes;

[0028] C. After the reaction in step B, continue to add the dissolved s...

Embodiment 3

[0036] A method for processing dissolved slag containing zinc and lead, the method comprising the following steps:

[0037] A. Add the dissolved slag, barium sulfide solution and sodium sulfide solution to the reactor under stirring conditions, and use pH test paper to detect the pH of the material in the reactor. If it is pH test paper, it shows that the pH of the material cannot reach pH = 14, then by adjusting the addition amount of these three reactants, make the acidity and alkalinity not lower than pH=14, and the time is 10 minutes;

[0038] B. After the reaction in step A, continue to add the dissolved slag, barium sulfide solution and sodium sulfide solution to the reactor under stirring conditions, and use pH test paper to detect the pH of the material in the reactor. If it is pH test paper, it shows that the material If the pH is in the range of 7≤pH<9, then adjust the amount of these three reactants to make the pH in the range of 7≤pH<9, and the time is 15 minutes; ...

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Abstract

The invention discloses a treatment method of dissolving slag containing zinc and lead, belonging to the technical field of waste treatment. The treatment method has the main characteristics that stable precipitates are produced by utilizing reaction of sulfur ions with harmful substances such as zinc and lead in the dissolving slag, so that the leaching content of heavy metal such as zinc and lead in the dissolving slag containing zinc and lead is reduced and the risks and the potential safety hazards of the dissolving slag containing zinc and lead to the environment are alleviated.

Description

technical field [0001] The invention belongs to the technical field of waste treatment, and in particular relates to a treatment method for dissolved slag containing zinc and lead. Background technique [0002] In industrial production, when the raw material zinc oxide is slurried, sulfuric acid is added to dissolve to obtain a zinc sulfate solution, accompanied by the generation of dissolved slag. The oxidized slag contains harmful substances such as zinc and lead. After testing, it is found that the leached content of harmful substances such as zinc and lead in the waste slag is too high, which belongs to hazardous waste. If it is discharged directly without treatment, it will inevitably affect the quality of the environment. It even brings irreversible harm to people's living space and human health, and has great environmental risks and potential safety hazards. Therefore, it is necessary to perform advanced treatment on the dissolved slag to reduce the leaching content ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D3/33A62D101/43
CPCA62D3/33A62D2101/43A62D2203/04
Inventor 李永安钟德洪吴小红罗启超
Owner GUANGXI YUANJIANG RUBBERLITH
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