Introduction to water treatmetn

Question 1

When water is referred as contaminated

Answer 1

Water is referred as contaminated when it contains impurities which make it unsuitable for it is intended use.

Question 2

Classify water impurities (not the main clasiification)

Answer 2

Phyiscal(can be detected by senses)
chemical (contains chemicals)
Biological
Radioactive

Question 3

Classification of water impurities by type

Answer 3

Suspended

filterable

Question 4

Suspended are divided into

Answer 4

Settlable and NOn Settlable

Question 5

Filterable are divided into

Answer 5

colloidal and dissolved

Question 6

All of the Settlable, nonsettlable, colloidal, and dissolved are divided into

Answer 6

organic and inorganic

Question 7

Size of suspended particles

Answer 7

bigger than 1 micron

Question 8

Size of colloidal particles

Answer 8

between 1 and 10 power -3 microns

Question 9

Size of Dissolved particles

Answer 9

Less than 10 power -3 microns

Question 10

Exam question

What are the factors that dictate the type and extent of treatment when considering design of water treatment plant

Answer 10

The type and and extent of treatment used will depend on the the type and extent of impurities present in the water in addition to the ultimate use of the water.