TEGUH, D.; AGUSTINA, T. E.; HAFIZ RIDHO, M.; FEBRIYANTI, N. .; ERMAYA, D. The Effectiveness and Cost Optimization of Coagulant Aluminum Chlorohydrate (ACH), Aluminum Sulfate (AS), and Poly Aluminium Chloride (PAC) in Coagulation Process at The PT. Pupuk Sriwijaya (PT. Pusri) Utility Unit. Indonesian Journal of Environmental Management and Sustainability, v. 6, n. 1, p. 28-34, 21 Mar. 2022.