Define the term "ozonation" in wastewater treatment.

Ozonation in wastewater treatment refers specifically to the use of ozone gas as a powerful oxidizing agent that aids in both disinfection and the degradation of organic contaminants. Ozone, being a tri-atomic form of oxygen, has strong oxidation potential, which allows it to effectively kill bacteria, viruses, and fungi, making it a reliable method for disinfection. Additionally, ozone can react with various organic and inorganic substances in the wastewater, breaking them down into less hazardous compounds and improving the overall water quality.

The significance of this process lies in its ability to reduce the need for chemical disinfectants, such as chlorine, which can create harmful by-products. Ozonation not only provides an effective means of disinfection but also enhances the treatment of wastewater by removing color, taste, and odor.

While the other options mention various processes related to wastewater treatment, they do not accurately reflect the specific role of ozonation in the treatment process. Ozonation is neither a method for chlorination, a technique for removing solid waste, nor a way to add nutrients. Its primary function revolves around the use of ozone for disinfection and oxidation.