The effect of zirconium oxide nanoparticles on dehydrogenase and hydrolytic activity of activated sludge microorganismsNina Doskocz, Katarzyna Affek and Monika Załęska-RadziwiłłE3S Web Conf., 44 (2018) 00034DOI: https://doi.org/10.1051/e3sconf/20184400034