[1] European Union (1991) Council Directive 91/271/EEC Concerning Urban Waste Water Treatment.
[2] Morling, S. (2001) “Performance of an SBR-Plant for Advanced Nutrient Removal, Using Septic Sludge as a Car-Bon Source. Water, Science and Technology, 43, 131-138.
https://doi.org/10.2166/wst.2001.0128
[3] Hey, T. (2016) Municipal Wastewater Treatment by Microsieving, Microfiltration and Forward Osmosis: Concepts and Potentials. LTH, Water and Environmental Engineering, Department of Chemical Engineering, Faculty of Engineering, Lund University, Lund.
[4] Marklund, S. and Morling, S. (1994) Biological Phosphorus Removal at Temperatures from 3 to 10°C—A Full Scale Study of a Sequencing Batch Reactor Unit. Canadian Journal of Civil Engineering, 21, 81-88.
https://doi.org/10.1139/l94-008
[5] Community of Gävle (2017) Annual Environmental Report for the Duvbacken WWTP. (In Swedish)
[6] Franquiz, A. Morling, S., Måhlgren, J. and Westlund, Å. (2014) Long Term Experiences of Sequencing Batch Reactor-System and Wetland Treatment from a Municipal Wastewater Treatment Plant in Sweden, Operated with Low Temperature Wastewater. Water Practice & Technology, 9, 235.
[7] Community of Nynäshamn (2016) Annual Environmental Report for the Nynäshamn Central WWTP. (In Swedish)