List of publications
Toihan has its roots in academic research at Aalto University, where our scientific foundation and approach to wastewater treatment process development were established.
Building on this academic background and our experience with full-scale wastewater treatment plants, we continue to contribute to the development of the industry by publishing research findings, engineering insights, and practical experiences through conference papers and presentations.
Hannukainen, H., Toivakainen, S., The role of computer vision analysis in improving biosludge quality and effluent treatment performance in pulp and paper industry, The International Control Systems Conference, 9-12 April 2024, Helsinki, Finland
Toivakainen, S., Hannukainen, H., Piispanen, M. Effect of floc porosity on biosludge settling properties in pulp and paper industry activated sludge process, Tecnicelpa conference October 11-13 2023, Coimbra, Portugal
Hannukainen, H., Toivakainen, S., Piispanen, M. Monitoring biosludge characteristics in a pulp mill effluent treatment plant with computer vision, O Papel, 2023, vol. 84, no. 1, pp. 62-65
Hannukainen, H. & Toivakainen, S., Case study: Implementing a cloud-based application to improve wastewater treatment process control in pulp and paper mills, O Papel, 2021, vol. 82, no. 4, p. 94-97
Hannukainen, H., Toivakainen, S., Case study: Implementing a cloud-based application to improve wastewater treatment process control in pulp and paper mills, The 53rd Pulp and Paper International Congress and Exhibition and 9th International Colloquium on Eucalyptus Pulp, October 6 – 8, 2020. São Paulo, Brazil. (RECOGNIZED WITH CONFERENCE TOP10 BEST PAPERS AWARD)
Toivakainen, S., Hannukainen, H., Laukkanen, T., Dahl O., Simultaneous precipitation in an ECF kraft pulp mill: long-term experiences., TAPPI PEERS Conference, October 27 – 30, 2019, St. Louis, Missouri
Hannukainen, H. & Toivakainen, S., Predictive analytics for pulp and paper industry wastewater treatment. PulPaper 2018 – Conference Book, 29-31 May 2018, Helsinki, Finland.
Toivakainen, S. & Hannukainen, H., Utilization of data-driven soft sensors in pulp industry wastewater treatment, The 11th Biennial Johan Gullichsen Colloquium, 8 November 2017, Helsinki, Finland
Toivakainen, S., Hannukainen, H. & Dahl, O., Precipitation of lignin from alkaline ECF bleaching filtrate with ferrous sulphate in alkaline conditions. IPBC 2017 – International Pulp Bleaching Conference, Aug. 28 -30, 2017. Porto Seguro, BA, Brazil.
Toivakainen, S., Hannukainen, H., Dahl, O. Utilization of calcium enriched solid waste streams to remove COD and color from kraft pulp mill bleaching filtrates. O Papel, MAY 2017, vol. 78, num. 5, pp. 86 – 89.
Toivakainen, S., Hannukainen, H. & Dahl, O., Utilization of calcium enriched solid waste streams to remove COD and colour from kraft pulp mill bleaching filtrates, ABTCP 2016 – 49th Pulp and Paper International Congress & Exhibition, October 25 – 27, 2016, São Paulo, Brazil
Toivakainen, S., Hannukainen, H., Dahl, O., Biodegradability of high and low molecular weight organic material in pulp and paper mill effluents, Iberoamerican Congress on Pulp and Paper Research, Ciadicyp, September 4 – 8, 2016, Espoo, Finland.
Hannukainen, H., Toivakainen, S., Metsäteollisuuden jätevedenkäsittelyn tehostaminen (Improving pulp and paper industry wastewater treatment), Vesitalous 6/2016, p. 9-11.
Toivakainen, S., Kopra, R., Tirri, P., Dahl, O., Utilizing refractometer for controlling COD removal in Kraft pulp mill wastewater treatment plant, Appita Fibre Value Chain Conference 15 – 17 October 2014, Rotorua, New Zealand
Toivakainen, S., Hannukainen, H., Laukkanen, T., Dahl O., The accumulation of non- or slowly biodegradable organic compounds in an activated sludge process within a kraft pulp mill, TAPPI PEERS Conference, September 14 – 17, 2014, Tacoma, Washington.
Kopra, R., Toivakainen, S., Tolonen, P., Tirri, T. Dahl, O. Monitoring of activated sludge plant streams using online refractometers and conductivity analysers. O Papel, 2013. Vol. 74, nro 9, p.61-65
Kopra, R., Toivakainen, S., Tolonen, P., Tirri, T., Laukkanen, T. & Dahl, O., Studies on wastewater treatment plant performance measurements, ABTCP 2013 – 46th Pulp and Paper International Congress & Exhibition, October 8 – 10, 2013, São Paulo, Brazil
Toivakainen, S., Laukkanen, T., Dahl, O., Simultaneous precipitation of phosphorus in a kraft pulp mill wastewater treatment plant. Water Science & Technology, Vol. 67, No. 2, p. 299–305, 2013.
Toivakainen, S., Jokinen, H. & Dahl, O., 2012. Sustainable olive oil production. Symposium on ”Olive Oil Mill Wastes and Environmental Production” 16 – 18 October 2012, Chania Greece.
Toivakainen, S., Laukkanen, T., Dahl, O., Dynamics in the aeration basin of the activated sludge process within ECF kraft pulp mills. 10th IWA Symposium on Forest Industry Wastewaters. Concepción, Chile. January 8 – 11, 2012. International Water Association.
Laukkanen, T., Toivakainen, S., Hussain, S., Dahl, O., Managing effluent phosphorus by optimizing the activated sludge process in the ECF kraft pulp mill. 10th IWA Symposium on Forest Industry Wastewaters. Concepción, Chile. January 8 – 11, 2012. International Water Association. (Sakari Toivakainen awarded with BEST PRESENTATION AWARD).
Toivakainen, S., Laukkanen, T. Dahl, O., Soveltuuko rinnakkaissaostus selluteollisuuden jätevesille? (Is simultaneous precipitation suitable for the pulp industry’s wastewater?), Vesitalous 2/2011, p. 17.
Toivakainen, S., Laukkanen, T., Jokinen, H., Dahl, O., Chlorate Reduction in Kraft Pulp Mill Wastewater Treatment Processes. Appita journal, 2011 JUN-JUL, Vol.64(3), p. 262-266.
Toivakainen, S., Laukkanen, T., Systematic approach to enhance conventional activated sludge plant at the pulp mill. 9th IWA Symposium on Forest Industry Wastewaters. Fredericton, New Brunswick, Canada. June 14-17, 2009. International Water Association.