What is one benefit of using bacteria in sewage treatment?

Using bacteria in sewage treatment is beneficial primarily because they play a critical role in the natural breakdown of organic matter. These microorganisms digest and decompose waste material, which is a key process in wastewater management. This biological treatment not only reduces the volume of pollutants in the sewage but also transforms harmful organic compounds into simpler, less harmful substances. By facilitating this decomposition, bacteria help to minimize the environmental impact of sewage discharge into natural water bodies.

Other options do not accurately represent the primary functions of bacteria in sewage treatment. While bacteria might indirectly affect pH levels during metabolic processes, their main advantage lies in their ability to decompose organic substances. They do not filter solid materials nor are they specifically known for being resistant to harsh chemicals in the context of sewage treatment; instead, they thrive in a balanced environment that is conducive to their biological activities. Overall, the ability of bacteria to effectively break down organic matter makes them invaluable to the sewage treatment process.