May 4, 2022What has been a purification process in wastewater treatment plants for decades can also be used decentrally or semi-centrally as a recycling process for nutrients. Early separation of "solid and liquid" plays a key role here. It allows for flexible solutions in terms of process technology, especially in the treatment of urine. New studies also show that the processes can be used not only for human urine, but also for that of cows or pigs.
May 2, 2022Ozonation is an established treatment process to remove micropollutants from wastewater. However, since unstable toxic reaction products can be formed in the process, biological post-treatment is necessary. Results from the Ecotox Centre and Eawag show how well different post-treatment methods reduce ecotoxicological effects. The combination of ozonation and activated carbon proved to be the most effective.
April 12, 2022Eawag is taking its experience with the treatment of faecal sludge in low-income countries and applying this know-how in Switzerland. The aim is to develop solutions that allow wastewater to be used as a source of energy and nutrients.
April 8, 2022The Wings Research Programme explores alternative, decentralised sewage systems and brings actors from the areas of research, politics, authorities, urban planning, and engineering and architectural firms together. The objective is to promote innovations in the water sector and find ways to create a sustainable and flexible future for wastewater.
March 29, 2022Artificial floods mimick natural flows to mobilise and transport sediment downstream, reshape the river and reinstate important habitats for native aquatic insects and fish. Improved outcomes can occur when these artificial floods converge with natural flows and sediment delivery from unregulated tributary streams further down the valley.
March 1, 2022The use of lake and river water to generate heat and cold is constantly increasing. The potential is enormous. Nevertheless, negative impacts on aquatic ecosystems must be avoided. A fact sheet from Eawag lists the key points in this regard.
