Potable Water Flashcards
What is potable water?
Water that is not pure. Which contains dissolved minerals that is safe for humans to drink. The levels of salt are not too high.
What is fresh water?
Water with little dissolved substances collected from surface or ground water dug up in warm area that need to be treated to make it safe.
What are the methods for potable water?(4)
Filtration: wire mesh: wire mesh screens big objects
Sterilisation: to kill bacteria, bubble chlorine gas
Distillation: desalinate sea water by neutralising ph. Evaporate water in flask and then condenses in condenser. Causing liquidation. Collect water in beaker, then test ph.
Reverse osmosis: Salt water pass through membrane. Allowing only water molecules . Trapping large molecules (expensive from lots of energy)
