Water Purification Flashcards
1
Q
How is most potable water produced?
A
- choosing an appropriate source of fresh water
- passing the water through filter beds
- sterilising
2
Q
What are the three types of sterilising agents for potable water?
A
- chorine
- ozone
- UV light
3
Q
How do you make potable water from salt water?
A
- remove salt from salty water
- distillation
4
Q
What is the difference between potable water and pure water?
A
- potable water is safe to drink but till contains dissolved substances
- pure water is only H2O
5
Q
How is sewage treated?
A
- screening and grit removal
- sedimentation to produce sewage sludge and effluent
- anaerobic digestion of sewage sludge
- Aerobic biological treatment of effluent
