Removing Iron from Drinking Water Iron in drinking

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Removing Iron from Drinking Water

Removing Iron from Drinking Water

Iron in drinking water Guidelines • Iron is essential for humans • Where does

Iron in drinking water Guidelines • Iron is essential for humans • Where does the iron that we need come from? ? – __________________– not necessary in water • Canadian Drinking Water Quality GL is ______

Why have these guidelines? • Iron GL are for _________ only – no health

Why have these guidelines? • Iron GL are for _________ only – no health risks with iron and iron bacteria – _____________________

Problems with Iron Bacteria • Iron bacteria will grow & build up anywhere _________

Problems with Iron Bacteria • Iron bacteria will grow & build up anywhere _________ • Form thick layers of “______” in pipes • ______________ to repair • Water has ____________ • Bad for ____________ • All iron needs to be _______ from water to _________

More about Iron • Iron can be in a ________- Soluble in water –

More about Iron • Iron can be in a ________- Soluble in water – ________ • Iron can be in an _________– NOT soluble in water – well water that has come in contact with _______ • Iron must be ______________ -i. e. _________!

Filtering Iron out of Drinking Water • Three main methods of oxidizing iron: –

Filtering Iron out of Drinking Water • Three main methods of oxidizing iron: – Simplest method – _____ – let the water sit in a ____, exposed to _____ and most of the _______to the bottom of the pool – This is a ______ process

Filtering Iron out of Drinking Water • Use _________ • Cause _________in tiny lumps

Filtering Iron out of Drinking Water • Use _________ • Cause _________in tiny lumps that will then be _________of the water • Filters must be _____and they _____ easily • Usually add a _______ – causes bigger clumps that are more easily filtered out • Clumps are called a “_____”

Filtering Iron out of Drinking Water • A different process is the use of

Filtering Iron out of Drinking Water • A different process is the use of a _____ process • Water is passed through a filter containing ______that will __________ • Iron bacteria take in ______ (dissolved in water) and make it into ______ through a ____________ • Form a __________