4.7 Water Treatment and Disposal

Question 1

How much of the world’s freshwater is in Canada?

Answer 1

One quarter

Question 2

What does water treatment do?

Answer 2

Physical, chemical, physicochemical and biological factors that want to eliminate and/or reduce contamination or non-desirable characteristics of water.

Question 3

A summary of filtering/sorting steps in the water treatment system…

Answer 3

Large Garbage is taken out, breakdown by bacteria than more filters to take out smaller garbage.

Question 4

What is alum?

Answer 4

A chemical that is added to help the particles flocculate.

Question 5

What does flocculate mean?

Answer 5

It means to clump together

Question 6

What are flocs?

Answer 6

Flocs are clumps of particles that have flocculated.

Question 7

What are water mains?

Answer 7

Water mains are large delivery pipes that lead to a water tower.

Question 8

What are secondary mains?

Answer 8

Secondary mains are delivery pipes that lead water to street mains that lead to homes.

Question 9

What is the sanitary sewer system?

Answer 9

Large pipes that carry waste that is considered sewage; from your sinks, toilets and baths.