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Waste mercury reagent recovery method

A recovery method and reagent technology, applied in the field of physical recovery and regeneration of mercury, can solve the problems of high cost and difficult disposal of waste mercury-containing reagents, and achieve the effects of low cost, low treatment cost and good economy.

Inactive Publication Date: 2020-08-25
SHENYANG ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the current problem of difficult disposal and high cost of waste mercury-containing reagents, the purpose of the present invention is to provide a method for recycling waste mercury reagents

Method used

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  • Waste mercury reagent recovery method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 500 mL of waste mercury reagent, filter it through woolen cloth to remove the residue, and then filter it through suede to remove impurities. Add the waste mercury reagent obtained after filtration into the cyclone pickling tank, adjust the pH of the liquid to 3.5, control the washing time for 1 hour, let stand for 1 hour after washing, and release the mercury-containing reagent in the lower layer.

[0017] Add the waste mercury reagent obtained after pickling into the cyclone alkali washing tank, adjust the pH of the liquid to 8.5, control the washing time for 1 hour, and let it stand for 1 hour after washing to form stratification, and release the mercury-containing reagent in the lower layer.

[0018] Add the waste mercury reagent obtained after alkali washing into the swirling water washing tank, control the washing time for 1 hour, and let it stand for 1.5 hours after washing to form stratification, release the mercury-containing reagent in the lower layer, and...

Embodiment 2

[0021] Take 500 mL of waste mercury reagent and filter it through wool to remove the residue, then filter it with suede to remove impurities. Add the waste mercury reagent obtained after filtration into the cyclone pickling tank, adjust the pH of the liquid to 4.5, control the washing time for 2 hours, let stand for 1 hour after washing, and release the mercury-containing reagent in the lower layer.

[0022] Add the waste mercury reagent obtained after pickling into the cyclone alkali washing tank, adjust the pH of the liquid to 8.0, control the washing time for 1.5 hours, and let it stand for 1 hour after washing to form stratification, and release the mercury-containing reagent in the lower layer.

[0023] Add the waste mercury reagent obtained after alkali washing into the swirling water washing tank, control the washing time for 1.5 hours, and let it stand for 1.5 hours after washing to form stratification, release the mercury-containing reagent in the lower layer, and obta...

Embodiment 3

[0026] Take 500 mL of waste mercury reagent and filter it through wool to remove the residue, then filter it with suede to remove impurities. Add the waste mercury reagent obtained after filtration into the cyclone pickling tank, adjust the pH of the liquid to 5.5, control the washing time for 3 hours, let stand for 1 hour after washing, and release the mercury-containing reagent in the lower layer.

[0027] Add the waste mercury reagent obtained after pickling into the cyclone alkali washing tank, adjust the pH of the liquid to 7.5, control the washing time for 2 hours, and let it stand for 1 hour after washing to form stratification, and release the mercury-containing reagent in the lower layer.

[0028] Add the waste mercury reagent obtained after alkali washing into the swirling water washing tank, control the washing time for 2 hours, and let it stand for 1.5 hours after washing to form stratification, release the mercury-containing reagent in the lower layer, and obtain a...

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Abstract

The invention discloses a waste mercury reagent recovery method in a mercury-containing waste recovery industry. The method comprises the following steps of filtering a waste mercury reagent by a woolfabric to remove residues; then filtering the waste mercury reagent by chamois leather to remove impurities; and then carrying out pickling, alkali washing and water washing to obtain relatively puresingle substance mercury, wherein the mercury purity is over 92%. In the process, exhaust gas generated by filtration is condensed and adsorbed and is discharged by reaching a standard and washing waste water which is subjected to precipitation treatment is discharged by reaching the standard. The method is simple in process and relatively low in treatment cost and has the advantages of simple process, low cost, good economy and the like compared with a curing landfilling method.

Description

technical field [0001] The invention relates to the technical field of a method for recovering waste mercury reagents, in particular to a method for resource recycling of mercury-containing waste, which belongs to the technical field of mercury physical recovery and regeneration. Background technique [0002] In recent years, the state has paid more and more attention to the prevention and control of heavy metal pollution. Since the announcement of the entry into force of the "Minamata Convention on Mercury" issued by the state in August 2017, people have paid more and more attention to the prevention and control of mercury pollution. The prevention and control of mercury pollution in mercury-related industries The pressure is mounting. In particular, the mercury smelting industry has been strictly regulated by relevant state departments, and the industry is facing enormous environmental pressure. [0003] At present, solidification landfill technology is usually used in Ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B43/00
CPCC22B7/006C22B43/00
Inventor 祁国恕侯海盟李宝磊赵岩曾乐刘舒陈明孔德勇闫向阳
Owner SHENYANG ACAD OF ENVIRONMENTAL SCI