Mare Purum

Last changed: 20 August 2020

Mare Purum was a Swedish/ Finnish cross border cooperation project for studying industrial and municipal wastewater treatment.

Wastewater is mainly cleaned by bacterial processes that may be aerobic (open air basins) or anaerobic (closed reactors for methane production). In order to understand the bacterial processes, streams of cleaned water need to be studied chemically. This is done by more or less regular sampling but the goal is online measurement.

Mare Purum had the goal of combining vibrational spectroscopy with wet chemical measurement for obtaining models that may become useful for future online measurement. A number of municipal and industrial (diaries, paper an pulp industry) installations are selected in Finland and Sweden to act as test sites. In parallel, also laboratory scale testing of bacterial process is carried out. Mare Purum aims to support a sustainable development in the Bothnia region, so that inhabitants and organizations in the region will benefit from the outcome of the work.

This project is financed by Botnia Atlantica programme as well as the national co-financiers The Regional Council of Ostrobothnia and Region Västerbotten. Mare Purum started in March 2012 and continues until June 2014.

For more information visit


Paul Geladi, Professor
Department of Forest Biomaterials and Technology, SLU, +46 90-786 87 93, +46 70-270 94 73