Micropollutant removal by superfine powdered activated carbon
Switzerland has introduced new wastewater treatment regulations which require the removal of 80% of organic micropollutants. This can be achieved by an activated carbon (AC) treatment of the wastewater, but the associated material and energy costs are high. In this project, we are investigating the use of superfine activated carbon (SPAC) as an alternative treatment method. Compared to traditional AC, SPAC particles are much smaller, which accelerates micropollutant uptake kinetics. We are currently operating a SPAC pilot reactor at the Sion wastewater treatment plant. We are investigating if SPAC treatment of wastewater allows to reduce the use of carbon, and hence the energy and material costs, compared to traditional AC methods.
Collaborators: Membratec, Alpha Wassertechnik AG
Funding: Federal Office for the Environment