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Sustainability Lesson Clearinghouse
Water Filtration
Lesson Description:
Water in lakes, rivers, and swamps often contains impurities that make it look and smell bad. The water may also contain bacteria and other microbiological organisms that can cause disease. Consequently, water from most surface sources must be “cleaned” before it can be consumed by people. Water treatment plants typically clean water by taking it through the following processes: (1) aeration; (2) coagulation; (3) sedimentation; (4) filtration; and (5) disinfection. Demonstration projects for the first four processes are included below.
Water in lakes, rivers, and swamps often contains impurities that make it look and smell bad. The water may also contain bacteria and other microbiological organisms that can cause disease. Consequently, water from most surface sources must be “cleaned” before it can be consumed by people. Water treatment plants typically clean water by taking it through the following processes: (1) aeration; (2) coagulation; (3) sedimentation; (4) filtration; and (5) disinfection. Demonstration projects for the first four processes are included below.
Lesson Type:
- Experiment
Sustainability Topic:
- Water
GEF Program Category:
- Sustainable Water Challenge
Submitted By:
GEF on behalf of US EPA
GEF on behalf of US EPA
School or Group:
EPA
EPA
Contact Email:
service@greeneducationfoundation.org
service@greeneducationfoundation.org
Located in: Science | Creativity
