Why Bother ? • Water is essential for good health. • Cleaning • Cooking/Food Preparation • Industrial Processes • Valuable Solvent
Common Impurities • Nitrates (NO3-) • Lead Compounds • Pesticides • Sulfates (SO42-) • Organic matter • Where do these impurities come from?
What does each stage achieve ? • Sedimentation • Filtration • Chlorination
Thinking outside the box • How can we remove dissolved poisons ? • How do we recycle water? • How do we preserve water in a low water economy like Israel or Libya? • How do you obtain industrial scale fresh water when you have poor aquifers like many parts of the Middle East?