Advanced Oxidation Process

Advanced oxidation processes ( AOP dec ), in German also Advanced oxidation, is a set of methods for the chemical treatment of organic and inorganic substances in waste water by oxidation.

This is performed at the AOP by means of ozone, hydrogen peroxide or a combination of these methods with ultraviolet radiation. The oxidation is thereby directly effected by these substances and in particular about resulting OH radicals (hydroxyl radicals).

The AOP method is especially used for the purification of biologically difficult or non-degradable substances (eg pesticides, biocides or drugs) in wastewaters. The harmful substances are thereby largely converted into stable inorganic compounds such as H2O, CO2 and salts. The aim of wastewater treatment using AOP method is to reduce the chemical oxygen demand and removal of color and change other parameters in order to reach limits that allow direct discharge of treated effluent to receiving waters.

Another field of application is the Restentfärbung in the so-called recycling of production waste water containing dye.