(Kaunas University of Technology, 2025-10-08) Nurmakova, Saule; Petruk, Roman; Katkov, Mykhailo; Nester, Аnatoliy
One of the main methods of natural water and wastewater treatment is coagulation. Water purification from suspended solids is very difficult due to their small particle size and flocculation stability. In many cases, enhancement of these processes can be achieved by enlargement of the particles in flocculence under the action of flocculants, especially mixtures (mixing) of them. Both pure chemical salts and mineral raw materials are used as initial raw materials for flocculants. The technique of obtaining coagulant from mineral raw materials (alunite, nepheline, slag, ash and clay, bauxite) and unconditioned natural ores that are considered technical waste is much cheaper than obtaining reagents from pure chemical salts.