AOP pilot plant for the removal of micropollutants in waste water treatment plants

Removing the anthropogenic trace substances which pollute our surface waters and other water resources is a particular challenge in waste water treatment. The substances, e.g. pharmaceutical residues, cosmetics, laundry detergent ingredients, pesticides or industrial chemicals, are synthetically produced and circulated by people and can be found in water in very low concentrations. They are released into the environment mainly through waste water. Pilot projects have shown that AOP (Advanced Oxidation Process) is ideally suited for eliminating pharmaceutical residues and industrial chemicals efficiently.

In cooperation with the Swiss company Ozonia, a world leader in industrial ozone technology, we offer studies, pilot projects, ozone and AOP plants for effective waste water treatment. Our 20“ AOP container contains a fully equipped pilot plant for oxidative waste water treatment by ozone, UV radiation and hydrogen peroxide (H202). The pilot plant can easily be integrated into existing systems and offers clients seeking validated performances for the treatment of highly recalcitrant pollutants the possibility of testing five different AOP methods.

The pilot container is optimally designed: it is equipped with an OZAT® ozone generator to generate high ozone concentrations and has a stand-alone oxygen supply. In addition, the plant has an Aquaray® LPHO UV system. These two systems are combined with a hydrogen peroxide dosing system and a dosing system to set the pH value.

In the photochemical reactor, UV radiation is applied to the water saturated with ozone and/or H2O2 to generate highly reactive hydroxyl radicals which are able to eliminate micropollutants very efficiently.

The container is air-conditioned and equipped with all necessary safety devices for automatic operation. With the help of the user-friendly and automatic PC interface, the user can automatically collect and analyse all important process parameters.

As part of a research project, the plant was successfully operated by the Institut für Siedlungswasserwirtschaft [Institute of Environmental Engineering] of RWTH Aachen University at an experimental waste water treatment plant in Neuss, Germany. At the moment, it is being used for the ozonisation of discharged water at a municipal water purification plant in North Rhine-Westphalia and will be available to new users as soon as the test programme is completed.

Read more: AOP System (535)

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