When using chlorine in potable or recycled water supplies, what is a key consideration?

When using chlorine in potable or recycled water supplies, what is a key consideration?

• A. To increase pump efficiency.
• B. To prevent corrosion or degradation of components; ensure contact time and safety.
• C. To accelerate water flow.
• D. To reduce energy consumption.

Answer: (B)

Controlling chlorine in drinking water and recycled water is about protecting the system while making sure disinfection works. Chlorine can be corrosive to many metals and elastomer seals, so a key point is using materials and components that are compatible with chlorine to prevent corrosion and degradation. At the same time, you must ensure there is enough contact time and an appropriate chlorine residual to achieve disinfection safely. This means dosing and mixing so the water spends enough time in contact with chlorine, while keeping residual levels within safety limits for people and the environment. In short, the big idea is balancing effective disinfection with protecting the system from chlorine-related damage and hazards.

Controlling chlorine in drinking water and recycled water is about protecting the system while making sure disinfection works. Chlorine can be corrosive to many metals and elastomer seals, so a key point is using materials and components that are compatible with chlorine to prevent corrosion and degradation. At the same time, you must ensure there is enough contact time and an appropriate chlorine residual to achieve disinfection safely. This means dosing and mixing so the water spends enough time in contact with chlorine, while keeping residual levels within safety limits for people and the environment. In short, the big idea is balancing effective disinfection with protecting the system from chlorine-related damage and hazards.