What is the most effective method for sequestering manganese in water treatment?

What is the most effective method for sequestering manganese in water treatment?

• A. Sulfates and chlorine
• B. Carbon filters and sand
• C. Polyphosphates and chlorine
• D. Coagulants and ozone

Answer: (C)

The most effective method for sequestering manganese in water treatment involves the use of polyphosphates and chlorine. Polyphosphates are compounds that can react with manganese ions in the water, effectively keeping them in a soluble form and preventing them from precipitating as manganese oxide, which is insoluble. This sequestering action helps to maintain manganese in a state that can be easily managed and removed through further treatment processes. Chlorine plays a dual role in this method. It can oxidize certain forms of manganese, making them easier to filter out if needed, and it also serves as a disinfectant to ensure the water is safe for consumption. The combination of polyphosphates and chlorine provides an effective, practical approach to achieving manganese control in drinking water systems, which is crucial for preventing staining in plumbing fixtures and ensuring water quality. Other methods listed may not provide the same level of effectiveness in sequestering manganese or managing its presence in treated water.

The most effective method for sequestering manganese in water treatment involves the use of polyphosphates and chlorine. Polyphosphates are compounds that can react with manganese ions in the water, effectively keeping them in a soluble form and preventing them from precipitating as manganese oxide, which is insoluble. This sequestering action helps to maintain manganese in a state that can be easily managed and removed through further treatment processes.

Chlorine plays a dual role in this method. It can oxidize certain forms of manganese, making them easier to filter out if needed, and it also serves as a disinfectant to ensure the water is safe for consumption. The combination of polyphosphates and chlorine provides an effective, practical approach to achieving manganese control in drinking water systems, which is crucial for preventing staining in plumbing fixtures and ensuring water quality.

Other methods listed may not provide the same level of effectiveness in sequestering manganese or managing its presence in treated water.