Which wastewater treatment process can generate methane which to be used as a fuel?

Question

Quizplus · Accepted Answer

Anaerobic digestors are the wastewater treatment process that generate methane which can be used as a fuel. In anaerobic digestors, microorganisms break down organic matter in the absence of oxygen, producing biogas that contains methane. This biogas can be cleaned and used as a fuel for energy generation. Primary treatment and trickling filters do not generate methane, while activated sludge process can produce some biogas but not as much as anaerobic digestion.

Which Wastewater Treatment Process Can Generate Methane Which to Be