water treatment Flashcards
1
Q
what is sedimentation
A
letting insoluble solids settle
2
Q
what is filtration
A
removing insoluble solids
3
Q
what is chlorination
A
kills micro organisms
4
Q
what is fluoridation
A
fluoride ions reduce teeth decay
5
Q
what do water filters contain
A
Carbon, silver and ion exchange resins
6
Q
why are carbon, silver and ion exchange resins included in water filters
A
they remove dissolved substances which improves taste and quality
7
Q
four ways in which water can be treated
A
- sedimentation
- filtration
- chlorination
- fluoridation
