Patroescu, Viorel IonViorel IonPatroescuIonescu, IoanaIoanaIonescuTiron, OlgaOlgaTironBumbac, CostelCostelBumbacMares, Monica AlinaMonica AlinaMaresJinescu, GherghitaGherghitaJinescu2017-03-312017-03-3120162537-5733http://hdl.handle.net/123456789/634Revista de Chimie (Bucuresti) Volume 67 Issue 5A pilot scale biological aerated filter (BAF) was built in order to test the ammonium removal from a groundwater source intended for drinking water. Expanded clay granules were used as a filter media. In order to study the conversion rates of various ammonium loads, a pollutant present in groundwater, the up-flow bioreactor was divided into three equal size sectors. The evolution of inorganic forms of nitrogen (NH4+, NO-2, NO-3) concentration fronts along the height of the filter media and the ammonium removal rates were determined.en-USGroundwaterNitrificationBiological aerated filterExpanded clayArticle