Ciliated protozoa in the impact zone of the Uzhgorod treatment plant Volodimir Pliashechnyk, Yaroslav Danko, Grzegorz Łagód, Jakub Drewnowski, Tatiana Kuzmina and Roman Babko E3S Web Conf., 30 (2018) 02008 Published online: 06 February 2018 DOI: 10.1051/e3sconf/20183002008