Waste Water Treatment (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What compound is found at high levels in human waste?
What compound is found at high levels in human waste?
Nitrogen compounds
How does human waste impact aquatic ecosystems?
How does human waste impact aquatic ecosystems?
Depletes oxygen levels
What harmful substance is found in industrial waste water?
What harmful substance is found in industrial waste water?
Toxic metal compounds
What substances are present in agricultural waste water?
What substances are present in agricultural waste water?
Fertilisers and pesticides
What problem can agricultural waste water cause in ecosystems?
What problem can agricultural waste water cause in ecosystems?
Algal blooms
What is removed during the coarse filtration step?
What is removed during the coarse filtration step?
Large particles and debris
What happens during sedimentation in waste water treatment?
What happens during sedimentation in waste water treatment?
Solid particles settle by gravity
Where does sewage sludge collect during sedimentation?
Where does sewage sludge collect during sedimentation?
At the bottom
What materials are used in fine filtration?
What materials are used in fine filtration?
Sand and gravel
What condition is required for anaerobic digestion?
What condition is required for anaerobic digestion?
Absence of oxygen
What useful product is made during anaerobic digestion?
What useful product is made during anaerobic digestion?
Biogas
Why is chlorine added during water treatment?
Why is chlorine added during water treatment?
To kill bacteria