Why is it important to avoid short-circuiting in a chlorine contact tank design?

Why is it important to avoid short-circuiting in a chlorine contact tank design?

• A. To maximize contact time for disinfection.
• B. To prevent excessive mixing.
• C. To shorten detention time altogether.
• D. To ensure adequate CT by providing proper contact time and avoid short-circuiting; design considers flow, mixing, and detention time.

Answer: (D)