An increase in temperature of the influent would improve the coagulation.

• A. Filtration
• B. Coagulation
• C. Sedimentation
• D. Disinfection

Answer: (B)

Coagulation relies on fast chemical reactions and enough particle collisions to form stable flocs. When the influent temperature rises, coagulant hydrolysis proceeds more quickly and water becomes less viscous, so particles move and collide more readily. This speeds up neutralization and bridging of colloids, allowing larger, stronger flocs to form during mixing. With better floc formation, downstream sedimentation and removal are more effective. So, higher influent temperature tends to improve the coagulation process.