water treatment

Question 1

Step 1

Answer 1

Screen
Collected water is screened to remove large insoluble impurities

Question 2

Step 2

Answer 2

Coagulate
Iron (ii) sulfate is added to clump fine suspended particles together.

Question 3

Step 3

Answer 3

Flotation tank
Water is blown through the water in flotation tanks to allow the coagulated particles to float and be skimmed off

Question 4

Step 4

Answer 4

Sedimentation and filtration
To remove solids

Question 5

Step 5

Answer 5

Carbon
Final stage of filtration and to remove bad taste and odour

Question 6

Step 6

Answer 6

Chlorination
Kill harmful microbes

Question 7

Step 7

Answer 7

Flourination
Prevent tooth decay

Question 8

Step 8

Answer 8

Reservoir
Purified water pumped to the reservoir for distribution