This is power point presentation of Different stages of purification in water,as part of my B.Ed curriculum

2. KUNJUKRISHNAN NADAR MEMORIAL
B.Ed College
Kanjiramkulam
Trivandrum

3. Name of the student: Jayamohan Das D.L
Optional Subject: Physical Science
Register Number: 18214398003
Year: 2014-2015

4. Topic
Different stages of purification
in water

5. Sub-TopicSub-Topic
Screening
Storage
Aeration
Filtration
Sterilization

6. DISTRIBUTION
 Can we use the water in lakes, rivers and
ponds as drinking water?
What methods can be used to purify turbid
well water in your house?
What about drinking water in your school?
 To meet the requirements of water of the
people living in cities we use water from
rivers and lakes. How is river water purified?
Note the different stages in water
purification.

8. 3. Aeration : The oxygen content of water is
retained in this stage. The water in the
reservoir is allowed to flow as small streams
into another tank where it is mixed with air.
4. Filtration : Water is filtered by passing
through sand and gravel.

9. 5. Sterilization : Chlorine is passed through
water to kill the bacteria that may still be
present in water. Water is now purified and
can be used as drinking water

10. THANK YOU