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The implementation of the revised urban wastewater treatment directive (UWWTD) introduced mandatory micropollutant abatement or quaternary treatment for many wastewater treatment plants (WWTPs) within the EU. Rya WWTP in Gothenburg, which is treating almost 880,000 PE of water, must find and implement a suitable option by 2045 at the latest. One alternative is granular activated carbon (GAC) which
