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

Filtration is primarily used to remove suspended solids and larger particles from wastewater, and while it can help reduce the number of microorganisms, it does not completely eliminate all pathogenic microorganisms. The filtration process generally relies on physical barriers to trap particles, but smaller pathogens might still pass through the filter media.

In contrast, chlorination is a chemical disinfection method that actively destroys many types of pathogens through oxidation. Heat treatment effectively kills microorganisms by exposing them to high temperatures, rendering them non-viable. Ozonation also serves as a powerful disinfectant, utilizing ozone's strong oxidative properties to break down and kill microorganisms. Therefore, while the other treatment processes effectively target and eliminate pathogenic organisms, filtration does not guarantee complete destruction, making it less effective for this specific purpose.