This report compiles Norwegian and some international results regarding soil infiltration systems, biofilters, constructed wetlands and reed beds for sludge treatment. The overall treatment performance of the systems is high and stable.
JENSSEN, P.D., JONASSON, S. and HEISTAD, A. (2006): Naturbasert rensing av avløpsvann - en kunnskapssammenstilling med hovedvekt på norske erfaringer. (Natural systems for wastewater treatment – a knowledge compilation with emphasis on Norwegian results). VA-forsk Rapport, no. 20. VA- forsk, Stockholm. 87p., (in Norwegian). URL [Visita: 23.01.2019] PDF