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

Question

Quizplus · Accepted Answer

Anaerobic digestors are the only wastewater treatment process that generate methane, which can be used as a fuel. In anaerobic digestion, organic matter in the wastewater is broken down by microorganisms in the absence of oxygen, generating methane as a byproduct. This methane can be captured and used as a renewable energy source. Settling and trickling filters mainly remove solids from the wastewater, while the activated sludge process uses aerobic organisms to break down organic matter, but it does not generate methane as a byproduct.

Which Wastewater Treatment Process Can Generate Methane Which to Be