Which of the following oxidants is considered an aid in coagulation?

The correct choice highlights oxidants recognized for enhancing coagulation processes in water treatment. Chlorine and ozone are commonly used disinfectants that, besides their primary role, can facilitate coagulation by breaking down organic matter and improving the aggregation of particles.

Potassium permanganate serves a similar purpose; it acts as an oxidizing agent that can help remove organic compounds and color from the water, thus enhancing the overall efficiency of coagulation. By oxidizing certain impurities, these oxidants help create more favorable conditions for coagulants to work effectively, leading to better removal of suspended particles.

In contrast, sodium bisulfite primarily serves as a reducing agent and is often used to remove excess chlorine from treated waters rather than aiding in coagulation. Chloride ions do not possess inherent coagulation properties and mainly function as a particle moderator in various chemical reactions. Ammonium sulfate, while sometimes used as a coagulant, does not act as an oxidant and does not enhance the coagulation process in the same way that the elements listed in the correct option do.

Understanding how different chemicals interact in the coagulation process is critical for optimizing water treatment operations, making the identification of effective oxidants like chlorine, ozone, and potassium permanganate essential