MICROSCREENING FOR STORMWATER TREATMENT
A competitive system for stormwater treatment should provide efficient particle removal, small footprint, rapid start-up, robustness, cost effectiveness and flexibility. Chemical pre-treatment followed by microscreening could fulfil these requirements. Thus the potential in such a system was investigated within the framework of a project involving Kemira Kemi AB, Hydrotech AB and the Department of Water and Environmental
Engineering at Lund Institute of Technology. Results from treatment of raw wastewater indicated that suspended solids as well as total phosphorous could be reduced with more than 90 %. The article summarises the first phase of the project, whereas the next phase will focus in long-term effects and the response to the dynamics of real stormwater situations.