Neutralox GmbH, Photoionisation, Fotooxidation, Photooxidation - Neutralox GmbH, We work with Photoionisation. Fotooxidation, Photooxidation, Fotooxidationsanlage, UV-technology, are terms used at other places. We treat odour, odor and off-gas, from wastewater treatment plants. We replace biofilter, biological and chemical scrubber.