Potable Water Flashcards
What are the steps to treat water from reservoirs?
Filter to remove insoluble particles and leaves
Sterilise with chlorine, ozone, uv light to kill microbes
Why is it difficult to produce drinking water from waste water than water in lakes?
Water needs more processes to remove organic matter
Why is distillation not an economic method.?
Expensive
How could water be tested to show it’s pure?
Find boiling point
If impure, water will boil above 100 degrees
How could a student check that all water had evaporated?
Re heat and weigh again
What is potable water?
Water that is safe to drink
How do we remove sea water?
Desalination or reverse osmosis
How does the process of desalination work?
Heat
Vapour produced and rises
Evaporates
Cools down
Condenses
What does the condenser do?
Allows cold water to flow so the vapour can condense and cool down