Which process produces a gaseous product that can be used as fuel to provide heat or power for a wastewater treatment plant?
A) trickling filter secondary wastewater treatment
B) aerobic secondary wastewater treatment
C) anaerobic secondary wastewater treatment
D) primary wastewater treatment

Question

Quizplus · Accepted Answer

Anaerobic secondary wastewater treatment produces biogas, which is a gaseous product that can be used as fuel to provide heat or power for a wastewater treatment plant. The biogas is typically composed of methane and carbon dioxide, and is a valuable source of renewable energy. Trickling filter and aerobic secondary wastewater treatments do not produce significant amounts of biogas, while primary wastewater treatment does not involve biological processes and therefore does not produce biogas.

Which Process Produces a Gaseous Product That Can Be Used