Water treatment (Edexcel GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does human waste contain that makes it harmful?
What does human waste contain that makes it harmful?
Harmful bacteria & nitrogen compounds
How does human waste impact aquatic ecosystems?
How does human waste impact aquatic ecosystems?
Depletes oxygen & promotes algae growth
What harmful substances are found in industrial waste water?
What harmful substances are found in industrial waste water?
Toxic metal compounds
What does agricultural waste water contain?
What does agricultural waste water contain?
Fertilisers and pesticides
What environmental problem do fertilisers and pesticides cause?
What environmental problem do fertilisers and pesticides cause?
Algal blooms & loss of biodiversity
What is the first step in the waste water treatment process?
What is the first step in the waste water treatment process?
Coarse filter
What two products does sedimentation produce?
What two products does sedimentation produce?
Sewage sludge and effluent
What materials are used in fine filtration?
What materials are used in fine filtration?
Layers of sand and gravel
What conditions are needed for anaerobic digestion of sewage sludge?
What conditions are needed for anaerobic digestion of sewage sludge?
Bacteria in the absence of oxygen
What useful product is made during anaerobic digestion?
What useful product is made during anaerobic digestion?
Biogas as renewable energy
Why is chlorine added to water during treatment?
Why is chlorine added to water during treatment?
Kill bacteria & make water safe to drink
Why is wastewater treatment important for sustainability?
Why is wastewater treatment important for sustainability?
Manages water resources sustainably