Treatment of waste water contaminated with iron ions on the basis of activated defecateDurdona Azimova, Dilnoza Salikhanova, Gulmira Nomozova, Izzat Eshmetov and Uktam TemirovE3S Web Conf., 377 (2023) 03005DOI: https://doi.org/10.1051/e3sconf/202337703005