Water Treatment Process Quiz

What is the first step in the water treatment process?

• Sedimentation

• Filtration

• Screening

• Chlorination

What happens during the screening step?

• It adds chemicals to the water.

• It keeps large materials like tree branches or plastics out of the water system.

• It destroys bacteria and microorganisms.

• It removes dissolved organic compounds.

What is the purpose of adding chemicals during the sedimentation step?

• To filter out large particles.

• To help small particles to stick together

• To add chlorine to the water.

• To pump water to homes and factories.

What happens to larger particles during the sedimentation step?

• They are filtered out by fine filters.

• They sink to the bottom of the tank

• They are destroyed by chlorine.

• They remain in the water system.

Which types of filters can be used in the filtration step?

• Coarse filters only

• Only filters with activated carbon

• Cloth, fine sand, or activated carbon

• Only filters made of metal

What does the carbon remove during the filtration step?

• Only large particles

• Dissolved organic compounds which can make the water smelly

• Only bacteria and microorganisms

• Chemicals added during coagulation

What is added to the water during the disinfection step?

• Fine sand

• Chlorine

• Floc

• Large particles

What is the purpose of adding chlorine to the water?

• To filter out particulates

• To destroy any bacteria or other microorganisms

• To add a fresh taste to the water

• To remove dissolved organic compounds

Which technologies can be used for disinfection besides chlorination?

• Coarse filters

• Only activated carbon filters

• Ultrafilters, UV light, or reverse osmosis

• Only fine sand filters

Where is the treated water stored before being sent to homes and factories?

• In a sediment tank

• In a fine filter

• In a covered storage tank

• In the coagulation tank