What type of coagulants are commonly used in the CEPT process?

In the CEPT (Combined Exceedance and Precipitation Treatment) process, ferric chloride and aluminum sulfate are commonly used as coagulants. These substances help to aggregate and remove suspended solids and other impurities in wastewater by neutralizing the charges that keep particles separated. When used in treatment, ferric chloride reacts to form flocs that can trap contaminants, facilitating their removal during sedimentation.

The choice of coagulants is crucial as they determine the efficiency of the treatment process. Ferric chloride is particularly effective in a variety of water quality conditions, and aluminum sulfate is a widely utilized coagulant due to its availability and cost-effectiveness. Using these specific coagulants contributes to the overall effectiveness of the CEPT process in reducing turbidity and improving water quality.