Wastewater plants employ a variety of effective and established processes to treat sewage and wastewater. As yet, however, there is no ideal, uniformly recognized method for removing trace substances. Researchers from the Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT are seeking to change this. In a project known as ZeroTrace, they are pursuing an integrated approach that combines their very own activated carbon composite with a newly developed electrical regeneration process. The result is a method that promises efficiency, sustainability and large-scale viability.