Dive into the 2025 NY Wastewater Exam – Flush Away the Competition with Confidence!

Sodium Hypochlorite is not commonly applied for phosphorus removal in wastewater treatment. This chemical is primarily used as a disinfectant and oxidizing agent in various stages of wastewater treatment processes. While it can help in controlling pathogens and odors, it does not contribute to the direct removal of phosphorus from wastewater.

In contrast, Aluminum Sulfate and Ferric Chloride are well-established coagulants that are effectively used to remove phosphorus by precipitating it out of solution, leading to its removal from the wastewater. Lime can also be involved in phosphorus removal through precipitation, particularly in situations where it increases the pH and facilitates the conversion of soluble phosphorus into insoluble forms.

Understanding these differences is crucial for recognizing the appropriate application of chemicals during wastewater treatment and ensuring effective phosphorus removal, a critical aspect of managing water quality in treatment facilities.