Waste Water Treatment (AQA 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 can harm aquatic ecosystems?
What does human waste contain that can harm aquatic ecosystems?
High levels of nitrogen compounds
What impact does human waste have on aquatic ecosystems?
What impact does human waste have on aquatic ecosystems?
Depletes oxygen & promotes algae growth
What do industrial waste waters contain?
What do industrial waste waters contain?
Harmful chemicals & toxic metal compounds
What problems does agricultural waste water cause?
What problems does agricultural waste water cause?
Nutrient pollution & algal blooms
What is the purpose of the coarse filter in water treatment?
What is the purpose of the coarse filter in water treatment?
To remove large particles and debris
What does sedimentation produce during water treatment?
What does sedimentation produce during water treatment?
Sewage sludge and effluent
What is used in fine filtration to remove smaller particles?
What is used in fine filtration to remove smaller particles?
Layers of sand and gravel
Under what conditions does anaerobic digestion of sewage sludge occur?
Under what conditions does anaerobic digestion of sewage sludge occur?
In the absence of oxygen
What does anaerobic digestion of sewage sludge produce?
What does anaerobic digestion of sewage sludge produce?
Biogas as renewable energy
What do aerobic bacteria break down during effluent treatment?
What do aerobic bacteria break down during effluent treatment?
Remaining organic matter
What is the purpose of chlorination in water treatment?
What is the purpose of chlorination in water treatment?
To kill bacteria and prevent disease
Why is wastewater treatment important for sustainability?
Why is wastewater treatment important for sustainability?
It manages water resources, key where scarce