Artur Mielcarek obtained his Master's degree in water and wastewater technology from the University of Warmia and Mazury in Olsztyn in 2011, and he earned a Ph.D. in water and wastewater technology from the Faculty of Environmental Engineering at the Lublin University of Technology in 2017. Currently, he serves as an assistant professor (adjunct) at the Department of Environmental Engineering at the University of Warmia and Mazury in Olsztyn. Since 2021, he has been a designer of sanitary networks, installations, and equipment, as well as a member of the Polish Chamber of Civil Engineers. In the years 2013-2015, he was the project leader for "External source of carbon as a potential indicator of distribution and activity of denitrifying and dephosphatating bacteria in a hybrid system of biofilm and activated sludge." From 2020 to 2023, he led the project "Development of precise treatment of wastewater from soilless tomato cultivation technology using an electro-biological hybrid reactor." His research interests include energy, water, and element recovery from wastewater, the application of biofilm in municipal and industrial wastewater treatment, phosphorus recovery, water, and wastewater management in soilless plant cultivation, microbial fuel cells, and the use of biological and physicochemical methods in wastewater treatment.