Water Treatment Processes and Techniques

Denver Water treats its water through a series of processes: coagulation, flocculation, sedimentation, filtration, and disinfection. Each step involves specific chemical and physical actions to remove impurities and ensure the water meets safety standards before distribution to customers.

What is the first step in Denver Water's treatment process?

• Disinfection

• Coagulation

• Sedimentation

• Filtration

What happens to negatively charged particles during coagulation?

• They are dissolved in water

• They are neutralized by positively charged coagulants

• They are filtered out

• They are evaporated

What is added during the flocculation process to help bind floc together?

• Coal

• Sand

• Chlorine

• Polymers

What role do spinning paddles play in the flocculation process?

• They add disinfectants

• They filter the water

• They speed up the mixing process

• They remove sludge

During sedimentation, what causes the heavy floc particles to settle at the bottom?

• Chemical reactions

• Gravity

• Filtration

• Evaporation

What is the purpose of the scraper in the sedimentation process?

• To add coagulants

• To disinfect the water

• To mix the water

• To remove sludge

What materials are used in the filtration tanks?

• Polymers and chlorine

• Sand and anthracite coal

• Floc and sludge

• Baffles and paddles

What is the main purpose of adding disinfectants like chlorine to the water?

• To remove sediment

• To destroy bacteria

• To bind floc together

• To neutralize particles

How does the filtration process remove remaining particles from the water?

• By trapping them in filter media

• By evaporation

• By chemical reactions

• By using gravity

What ensures that the water meets all state and federal drinking water regulations?

• The addition of polymers

• The use of spinning paddles

• The sedimentation process

• The disinfection process