Used in wastewater treatment for precipitating phosphates and sulfides, reducing turbidity and unpleasant odors in water. Commonly applied in sewage treatment from textile, paper, and food industries due to its effectiveness in binding negatively charged contaminants. Helps adjust water pH to optimal levels for subsequent treatment processes. As an iron-based coagulant, it aids in heavy metal removal and enhances overall water clarification without introducing strong alkalinity.