1. Water purification in
water treatment plant

2. water in treatment plant
Water purification in water treatment plant
water in reservoir
water in treatment plant  
public use

3. Screening Flocculation Sedimentation Sand filtration Chlorination
Water purification in water treatment plant
In water treatment plants, water purifying steps are:
Screening
Flocculation
Sedimentation
Sand filtration
Chlorination
Fluoridation

4. Fluoridation Screening Flocculation Sedimentation Sand filtration
Water purification in water treatment plant
Screening
Flocculation
Sedimentation
Sand filtration
Fluoridation
Chlorination

5. A metal screen is used to remove large objects
Water purification in water treatment plant
1 Screening
A metal screen is used to remove large objects
2 Flocculation
Some chemical is added to remove fine solid particles

6. Allows solid particles to sink to bottom
Water purification in water treatment plant
3 Sedimentation
Allows solid particles to sink to bottom
4 Sand filtration
Removing any fine particles

7. Chlorine is added to kill micro-organisms
Water purification in water treatment plant
5 Chlorination
Chlorine is added to kill micro-organisms
6 Fluoridation
Fluoride is added to protect teeth