Which oxidant should be introduced early in the treatment process for full reaction?

Which oxidant should be introduced early in the treatment process for full reaction?

• A. Chlorine dioxide
• B. Potassium permanganate
• C. Ozone
• D. Hydrogen peroxide

Answer: (B)

The reason potassium permanganate should be introduced early in the treatment process is due to its effectiveness as an oxidant in water treatment. When used at the outset, it can react with a wide range of contaminants, such as iron and manganese, facilitating their removal. This early introduction allows for the formation of manganese dioxide, which precipitates out these metals, thus improving water quality. Potassium permanganate has a relatively strong oxidizing capability and its reactions are rapid, making it suitable for initiating the treatment process. By applying it early, the remaining treatment steps can be optimized as many of the unwanted substances will have already been transformed or removed, enhancing overall efficiency. Other oxidants, like chlorine dioxide, ozone, and hydrogen peroxide, while also effective in specific contexts, may not require or benefit from early introduction in the same way. They might serve best at different stages of treatment or have different reactions that can occur more effectively once certain other processes have taken place, such as disinfection or remaining organic compound oxidation. Thus, the timing of their application can be less critical than that of potassium permanganate.

The reason potassium permanganate should be introduced early in the treatment process is due to its effectiveness as an oxidant in water treatment. When used at the outset, it can react with a wide range of contaminants, such as iron and manganese, facilitating their removal. This early introduction allows for the formation of manganese dioxide, which precipitates out these metals, thus improving water quality.

Potassium permanganate has a relatively strong oxidizing capability and its reactions are rapid, making it suitable for initiating the treatment process. By applying it early, the remaining treatment steps can be optimized as many of the unwanted substances will have already been transformed or removed, enhancing overall efficiency.

Other oxidants, like chlorine dioxide, ozone, and hydrogen peroxide, while also effective in specific contexts, may not require or benefit from early introduction in the same way. They might serve best at different stages of treatment or have different reactions that can occur more effectively once certain other processes have taken place, such as disinfection or remaining organic compound oxidation. Thus, the timing of their application can be less critical than that of potassium permanganate.