In Sweden, Källby wastewater treatment plant (WWTP) and Arc Aroma Pure AB (ArcAroma), have agreed to test ArcAroma´s "dynaCEPT" technology to increase biogas production from sewage sludge and to follow up on other effects of the dynaCEPT process.

According to a statement, the test will start at the Källby WWTP in Lund, Sweden, this autumn. Källby is one of several WWTPs operated by VA Syd, the regional wastewater treatment organization for the southwest of Skåne County, Sweden.
In March 2019, ArcAroma initiated a similar test of its dynaCEPT technology at a WWTP in Denmark together with Aarhus Vand A/S.