How Does it Work? - Drinking Water

Olivia explores the science of water treatment, learning about the processes involved in making tap water safe to drink. The journey begins with understanding the source of water, whether from rivers or aquifers, each requiring specific treatments. The process includes sedimentation using coagulants, filtration through sand, gravel, and charcoal, and a two-step disinfection with ozone and chlorine. The video highlights the scientific and engineering principles ensuring water purity.

What is the first consideration in water treatment according to Olivia's learning?

• The taste of the water

• The temperature of the water

• The source of the water

• The color of the water

What role do coagulants like aluminium sulphate play in water treatment?

• They add flavor to the water

• They reduce the water's pH level

• They bind to impurities to form larger particles

• They increase the water's temperature

Which of the following is NOT a component of the filtration process described?

• Gravel

• Activated charcoal

• Sand

• Plastic beads

What is the purpose of using a strong disinfectant like ozone in water treatment?

• To change the water's color

• To increase the water's pH

• To eliminate viruses and bacteria

• To add minerals to the water

Why is a residual disinfectant like chlorine added to the water?

• To enhance the water's flavor

• To reduce the water's temperature

• To protect the water as it travels through pipes

• To make the water sparkle