Kelsey Flanagan spoke about micro pollutants in stormwater pond sediments. She has investigated organic pollutants in sediments from 16 different stormwater ponds. A total of 92 of the pollutants examined were detected which leads to the conclusion that stormwater ponds contain a large amount of pollutants. Although, the number and amount of pollutants naturally varies between different ponds. Emelie Hedlund Nilsson presented results from the workshop she held earlier this year on snow management. For more information about the workshop, see the link below.
Ico Broekhuizen then explained why 2-step calibration of stormwater models is important for practitioners and how it can be used. In addition to the fact that 2-step calibration gives a much shorter calculation time compared to traditional 1-step calibration, the modeling results are also more reliable.
Godecke Blecken underlined the benefits of combined green / blue / white infrastructure. In order to create attractive, well-functioning outdoor environments, it is important already during the planning stage to take into account that the outdoor environments must be adapted to many different conditions such as snow, rain, sun, winter and summer.
Haoyu Wei presented his research on sediments in gully pots. Among others, he spoke about the emptying frequency of gully pots which should be determined on the basis of several factors - in addition to preventing flooding, consideration should be given to reducing the risk of blockages caused by sediment, and to reducing the pollution load on the recipient. In a future study, he will focus on identifying factors to determine priority in maintenance of different gully pots.
Finally, Emil Eriksson from Järven Ecotech spoke about the company's innovative method for emptying stormwater ponds from sediments and presented the research project they have together with LTU. Together with researchers at LTU, they investigate e.g. if the reject water from the sediment discharge is sufficiently clean or if it needs to be treated further before it is conveyed back into the stormwater pond.