Changes in pH during the ozonation process of surface water Palvan Kalandarov, Kanat Zhunussov, Abdurazak Kassimov, Bagzhan Baibolov, Nuridin Junussov and Kazima Kaliyeva E3S Web Conf., 563 (2024) 01020 Published online: 30 August 2024 DOI: 10.1051/e3sconf/202456301020