Describe anaerobic digestion of sewage sludge.

In the subtopic Waste water treatment, this learning objective focuses on describe anaerobic digestion of sewage sludge. Within Using the Earth's resources and obtaining potable water, students should explain this idea in the exact curriculum context rather than as an isolated fact. Approved keywords for this objective include sewage, sewage sludge, and anaerobic digestion. anaerobic digestion means a biological process that breaks down organic matter in the absence of oxygen, producing biogas and digestate. Avoid students often confuse anaerobic digestion with aerobic processes, thinking that oxygen is required for the breakdown of sewage sludge; instead remember that anaerobic digestion occurs in the absence of oxygen, allowing bacteria to break down organic matter in sewage sludge. For exam answers, focus on the process of anaerobic digestion in sewage treatment, including the role of bacteria in breaking down organic matter.