Question detail
What is aerobic biological treatment of effluent and why is it important in waste water treatment?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Using the Earth's resources and obtaining potable water
Question
What is aerobic biological treatment of effluent and why is it important in waste water treatment?
Answer
Aerobic biological treatment of effluent involves using microorganisms that require oxygen to break down organic matter in the waste water. This process is important because it helps to reduce the levels of harmful substances in the effluent, making it safer for release into the environment.
Explanation
A strong answer should directly address the approved learning objective to describe aerobic biological treatment of effluent. This question belongs to Waste water treatment within Using the Earth's resources and obtaining potable water, so the response should use that exact curriculum context rather than a generic statement. The answer is correct when it names the key idea, explains the link to effluent, and keeps the wording specific to AQA GCSE revision.
Common mistake
Confusing Aerobic and Anaerobic Treatment
Students often confuse aerobic biological treatment with anaerobic digestion, thinking both processes occur in the absence of oxygen.
Remember that aerobic treatment requires oxygen, while anaerobic digestion occurs without oxygen. Focus on the role of oxygen in the breakdown of organic matter.
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