Organic micropollutants (OMPs) need to be removed from wastewater. Microalgae-based technology have proven to efficiently remove many OMPs. In this thesis, the removal processes of individual OMPs and OMPs mixture were investigated in batch experiments with single species. Furthermore, the impact of wastewater characteristic on the removal of 16 OMPs were assessed in continuous experiments with single species. The effect of species richness on OMPs removal was explored in batch and continuous experiments. Finally, the outcomes of the experiments were summarized, and future perspectives related to species diversity, wastewater characteristics, and combination with other treatments were highlighted.