Agnieszka Renman

Agnieszka Renman is PhD in Land and Water Resources Engineering and Docent in Environmental Engineering with specialization Land and Water Engineering at KTH, researcher, teacher and Head of SEED & Water Centre Laboratory. She has a background in agricultural environmental engineering from Warsaw University of Life Sciences, SGGW. Her research involves the use of reactive filter media or sorbents for treatment of polluted water and sediments. She took active part in the development of Polonite® to a sucessful product which is manufactured by Polonite Nordic AB and and used in small-scale wastewater treatment facilities (see Portfolio). The current research focus is on the new challenge to develop the new generation of Polonite and other filter media for water and wastewater treatment, and to adapt a number of reactive composites to remove phosphorus and other contaminants released from sediment and from hypolimnetic lake or sea water. A thin-layer capping method based on calcium silicate composites is developed within the project CAPTIVE (coordinator Stockholm University). Moreover a technology is developed for sequestering the benthic phosphorus flux and phosphorus in sediment superficial water followed by density sorting dredging for P recycling.The goal is to find uses of all sediment components in a circular economy. Research is performed as a Triple Helix (research-enterprises-public), i.e. to demonstrate and motivate pollution abatement and phosphorus recovery of a potential resource among public executive bodies. Moreover,  nutrient removal structures  are technically developed, i.e. structures that can house the filter media, for trapping phosphorus and other nutrients, and further on be recycled to agriculture as fertilizers or soil amendments. Treated water can be stored in sub-surface dams for use during time with water shortage.