Fredrik Nyström
Fredrik Nyström

Fredrik Nyström

PhD Student position
Luleå University of Technology
Urban Water Engineering
Architecture and Water
Department of Civil, Environmental and Natural Resources Engineering
fredrik.nystrom@ltu.se
+46 (0)920 493538
F1136 Luleå

Research Subject

Fredrik's PhD-project concerns advanced treatment methods for polluted stormwater. Urban run-off from large traffic intersection and industrial areas often contain pollutants originating from emissions, exhausts and particles from car brake/tire abrasion. These are often small metal particles and polycyclic aromatic hydrocarbons (PAHs), and they have a toxic effect on the recipient they end up in.

Presently, urban run-off is not treated to a larger extent. There are systems in place, such as dams, that aims to primarily delay the run-off but also have a secondary treatment effect in sedimentation. Unfortunately small particles don't readily sediment in these systems and a large portion of the pollutants end up in the recipient anyway. It is within this context Fredrik's research takes place.

Ongoing research is an evaluation of different coagulants and flocculants on snowmelt. Both commercial products commonly used in wastewater treatment plants, and drinking water production plants are tested alongside other interesting products such as biopolymers.

Later in the PhD-project there are plans to study reactive filters and membrane filters.

 

Research Projects

Publications

Conference paper

Removal of small particles from urban snow melt mixture by coagulation/flocculation and sedimentation (2017)

Nyström. F, Nordqvist. K, Herrmann. I, Hedström. A, Viklander. M
Part of: 14th IWA/IAHR International Conference on Urban Drainage, Conference Proceedings, 2017, 2017
Conference paper

Flocculation and membrane filtration of stormwater (2016)

laboratory experiments
Nyström. F, Nordqvist. K, Herrmann. I, Hedström. A, Viklander. M
Paper presented at : IWA Conference for the Specialist Group on Particle Separation : Advances in particle science and separation: meeting tomorrow’s challenges 22/06/2016 - 24/06/2016