Hydrogen peroxide-phosphoric acid mixture, and preparation method and application thereof

A technology of hydrogen peroxide phosphoric acid mixture and phosphoric acid mixture, which is applied in chemical instruments and methods, oxidized water/sewage treatment, water pollutants, etc., can solve the problems of hydrogen chloride operation workers such as great harm, achieve considerable economic benefits, good effect, and improve circulation The effect of utilization

Inactive Publication Date: 2015-07-08
丁建林 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2. The secondary pollution of hydrogen chloride is very harmful to the operators

Method used

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  • Hydrogen peroxide-phosphoric acid mixture, and preparation method and application thereof
  • Hydrogen peroxide-phosphoric acid mixture, and preparation method and application thereof
  • Hydrogen peroxide-phosphoric acid mixture, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Measure 80% phosphoric acid whose concentration is one-twentieth of the mass of 30% hydrogen peroxide and add it to hydrogen peroxide, add triethanolamine whose quality is 0.2% of hydrogen peroxide, mix well, and leave it to stand for 10 minutes to obtain hydrogen peroxide phosphoric acid mixture, namely It can be added to the disposed cyanide-containing silver plating waste.

Embodiment 2

[0071] Measure 60% phosphoric acid with a concentration of 1 / 40th of the mass of 50% hydrogen peroxide and add it to hydrogen peroxide, add ethanol with a mass of 0.1% of hydrogen peroxide, mix well, and let it stand for 6 minutes to obtain hydrogen peroxide phosphoric acid mixture, which can be added into the disposed of cyanide-containing silver plating waste.

Embodiment 3

[0073] Measure 80% phosphoric acid whose concentration is one-fiftieth of the mass of 30% hydrogen peroxide and add it to hydrogen peroxide, add isopropanol with a mass of 0.4% hydrogen peroxide, mix well, and leave it to stand for 10 minutes to obtain hydrogen peroxide phosphoric acid mixture, namely It can be added to the disposed cyanide-containing silver plating waste.

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Abstract

The invention provides a hydrogen peroxide-phosphoric acid mixture, and a preparation method and an application thereof. The hydrogen peroxide-phosphoric acid mixture is composed of hydrogen peroxide, phosphoric acid and a stabilizer, a mass ratio of hydrogen peroxide to phosphoric acid is 20:1-50:1, and the stabilizer accounts for 0.1-0.5% of the weight of hydrogen peroxide. The application method of the hydrogen peroxide-phosphoric acid mixture in treatment of cyanogen-containing silvering wastewater comprises the following steps: 1, carrying out electrolyzing pretreatment on the cyanogen-containing silvering wastewater to remove Ag<+> as possible; and 2, treating the pretreated cyanogen-containing silvering wastewater by using the hydrogen peroxide-phosphoric acid mixture. The hydrogen peroxide-phosphoric acid mixture can be used to treat medium and low concentration cyanogen-containing silvering wastewater, and can also be used to treat high concentration cyanogen-containing silvering wastewater. The hydrogen peroxide-phosphoric acid mixture avoids secondary pollution and guarantees the health and safety of operators in the treatment process of the cyanogen-containing silvering wastewater, and allows the precious metal silver to be recovered in the electrolyzing pretreatment process.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and specifically relates to a hydrogen peroxide phosphoric acid mixture and a method for preparing and using the hydrogen peroxide phosphoric acid mixture to treat cyanide-containing silver-plating wastewater. Background technique [0002] Cyanide is a highly toxic substance. Cyanides, including cyanide compounds (such as potassium cyanide, sodium cyanide, and cyanide complexes), all contain CNˉgroups. Cyanide-containing wastewater is wastewater containing CNˉgroups. This type of wastewater has complex components, including both inorganic pollutant compounds and organic pollutant compounds. There are many toxic and harmful substances, which also contain a large amount of thiocyanate and precious metals. If they are not treated, they will be directly discharged into water bodies and soil, which will cause serious harm to the environment and human body. CNˉcan be combined with ferri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F9/06C02F101/18C02F103/16
Inventor 丁建林胡俊峰陈志涛何飞飞
Owner 丁建林
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