2.  Watch the Peel Water Treatment Tours › Water Treatment Plant Tours Water Treatment Plant Tours  Complete the reading on Peel’s Water Treatment Process. › Create 2 ‘closed-ended’ questions and 1 ‘open-ended’ question regarding the reading. Answer them as well. › Once completed, you will be testing partners with your questions.

3.  Based on the Peel Water Treatment videos and reading, attempt to match up the terms/processes and definitions.  Activity will be answered as we go through the extravagant process!

4.  We usually get our drinking water from wells, lakes (Lake Ontario), or rivers.  In nature, water often contains impurities and toxins.  How is fresh water made for safe drinking?

5.  The are 6 phases in the water treatment process: 1. Intake 2. Coagulation & Flocculation 3. Sedimentation 4. Filtration 5. Disinfection 6. Storage

6.  The first step is to remove large objects from the water and from entering the treatment plant.  A metal screen covers the end of a pipe that draws water from its source.

7. Coagulation:  In a large tank, the process of rapid mixing of alum (a chemical) and water pushes large suspended particles to the bottom of the tank for removal. Flocculation:  In a large tank, the process of slow mixing that causes the remaining particles (floc) to join and sink to the bottom of the tanks for removal.

8.  A settling tank where the water flows slowly to allow the floc to settle to the bottom of the tank.  The clear water moves to filtration.

9.  Partially cleaned water moves through a sand and charcoal filter.  This removes any remaining waste solids and small pieces of floc.  The water is now clear, colourless, and odourless.

10.  The water may still contain micro- organisms, such as bacteria.  Chlorine is added to kill any micro- organisms.

11.  The treated water can then be stored in sealed containers, ready for use.

12.  To further your understanding, read pages 20-22 in Nelson Perspectives and answer the “Check You Understanding” questions.  Nelson: Making Water Drinkable (10.5) Nelson: Making Water Drinkable (10.5)

13. The Water Treatment Process

14.  Read and review the lab as a class, and note the different steps in the challenge Videos  Water Filtration Experiment Water Filtration Experiment (w/ Sedimentation Process)  Filtration Device Example Filtration Device Example  Filtration Device Example Filtration Device Example