WIDIANTO, T.; ARIFIN, Z.; YULIANTO, E. Performance of Removal Efficiency in the Main Wastewater Treatment Plant for Physical, Chemical (Fe, Zn, Bod), and Biological Parameters at the Steam Power Plant (Pltu) Paiton Units 3, 7 & 8. Journal La Multiapp, v. 7, n. 2, p. 329-340, 5 Feb. 2026.