Water Treatment Processes: From Potable Water to Wastewater Treatment

The video tutorial covers the processes involved in ensuring water quality, including the treatment of freshwater and wastewater. It explains the steps of filtration, sedimentation, and sterilization for making water safe to drink. The video also discusses desalination techniques like distillation and reverse osmosis, highlighting their energy requirements. Finally, it describes the treatment of wastewater to prevent pollution of natural water sources.

What is the purpose of passing water through a large filter during the treatment process?

• To remove dissolved salts

• To remove large insoluble objects

• To add minerals to the water

• To sterilize the water

Which of the following is NOT a method used to sterilize water?

• UV lights

• Ozone

• Reverse osmosis

• Chlorine

What is a major drawback of using distillation for desalination?

• It adds impurities to the water

• It is ineffective on a small scale

• It cannot remove dissolved salts

• It requires large amounts of energy

In reverse osmosis, what is used to filter out dissolved minerals and impurities?

• UV lights

• Chlorine

• A fine membrane

• A large filter

What role do aerobic bacteria play in wastewater treatment?

• They remove large insoluble objects

• They convert sludge into fertilizer

• They break down harmful organic substances

• They add oxygen to the water