Water Flashcards
1
Q
What is potable water?
A
Water safe for human consumption
2
Q
Requirements for Potable water
A
Low levels of dissolved salts and bacteria
pH between 6.5-8.5
3
Q
How to treat fresh water to become potable
A
-Filtration
-Sterilisation
4
Q
What is desalinisation?
A
Turn sea water into fresh water by distillation
5
Q
How is sewage converted to potable water
A
Large things are removed
Undergoes sedimentation (large sediment deposits at the bottom)
Treated by anaerobic digestion which breaks down organic matter
Waste water can have chemicals added to decontaminate it from toxic substances
