If a biological sewage treatment plant consists of three chambers, what is the sequential order of treatment chambers within the plant?

Correct Answer: Option C — Aeration, sedimentation, disinfection

Biological sewage treatment plants utilize a specific sequence: aeration provides oxygen for bacteria to digest waste, sedimentation allows solids to settle into sludge, and disinfection treats the effluent to kill pathogens before discharge. This process ensures the treated water meets regulatory standards for biological oxygen demand and bacterial counts.