This project aims to significantly improve the sustainability of municipal wastewater treatment by reducing its energy consumption, sludge production, space requirements and greenhouse gas (CO₂, methane and N₂O) emissions, which current conventional wastewater treatment plants suffer from.  Even though the prime focus remains the protection of human health and the environment by meeting the required effluent quality at all times, these additional criteria are now more important than ever. To realize the needful transition from wastewater treatment plants to true resource recovery facilities, the critical recovery of phosphorus is included as well. We will provide sustainable engineering solutions by scrutinizing crucial unit processes as well as through the optimization and comparison of integrated process schemes.  On a fundamental level, this project aims to make a breakthrough in understanding the interlinkage of the carbon, nitrogen, phosphorus and sulfur cycles.