Waste water treatment
Cards (26)
- What is the main focus of this video?
- What is potable water?
- What percentage of water is used for drinking?
- What are some uses of water besides drinking?
- What does wastewater contain?
- Why must wastewater be treated before release?
- What is the first stage of wastewater treatment?
- What happens to sewage after screening?
- What is produced after sewage settles?
- What happens to the sludge?
- What do anaerobic bacteria produce?
- How can biogas be used?
- What must be done to the liquid effluent before discharge?
- How is oxygen introduced to the liquid effluent?
- What do aerobic bacteria do in the treatment process?
- Where can treated liquid effluent be discharged?
- What is a common use of water in industry?
- What must be removed from industrial wastewater?
- What can treated sewage be used for in some parts of the world?
- Why is producing potable water from wastewater not common in the UK?
- What is the easiest source of potable water?
- What must be done to groundwater from aquifers before drinking?
- What can pollute aquifers?
- What is required to produce potable water from salt water?
- What is a drawback of desalination?
- Where can students find more questions on wastewater treatment?