Hydrogen peroxide is a strong oxidant, oxidation reaction is very fast in alkaline solution
Release time:
2023-06-12
Hydrogen peroxide is a strong oxidant, oxidation reaction in alkaline solution is very fast, will not bring impurity ions to the reaction solution
Hydrogen peroxide is a strong oxidant, oxidation reaction in alkaline solution is very fast, will not bring impurity ions to the reaction solution, so it is well used in the treatment of a variety of organic or inorganic pollutants. Hydrogen peroxide has been used to remove COD in industrial wastewater for a long time. Although the price of using chemical oxidation to treat wastewater is higher than that of ordinary physical and biological methods, this method has an irreplaceable role in other treatment methods, such as the pre-digestion of toxic and harmful or non-biodegradable wastewater, the pretreatment of high concentration/low flow wastewater, etc. The effect of using hydrogen peroxide alone to degrade high-concentration stable refractory compounds is not good, and can be improved by using transition metal salts. The common method is to use iron salts to activate, that is, Fenton's reagent method. The method is to use chemical oxidants to convert liquid or gaseous inorganic or organic substances into micro-poisons, non-toxic substances, or to convert them into easily separated forms. The commonly used oxidants in the field of water treatment are ozone, hydrogen peroxide, potassium permanganate, etc. In phenol wastewater treatment process, the application of ozone and hydrogen peroxide is common.
The three principles of indoor air pollutant control are: source control, ventilation and end purification. Source control is to reduce the types of pollutants at the source and reduce the release rate of pollutants through raw material control, manufacturing process optimization, heat treatment (accelerated release, reduced later release rate) and spraying (reaction, infiltration/coverage, delayed release). Ventilation is the dilution of indoor pollutants through natural ventilation, mechanical ventilation and fresh air purification. The end of the purification treatment means mainly include: adsorption (physical adsorption and chemical adsorption), chemical reaction (oxidation: ozone and chlorine dioxide), catalytic oxidation (photocatalysis, plasma catalysis, thermal catalysis and room temperature catalysis) three ways.
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