Drinking Water Treatment
Drinking water supplies that are particularly vulnerable to unicellular algal blooms, and supplies with low turbidity and high colour often employ DAF. After coagulation and flocculation processes, water flows to DAF tanks where air diffusers on the tank bottom create fine bubbles that attach to floc resulting in a floating mass of concentrated floc. The floating floc blanket is removed from the surface and clarified water is withdrawn from the bottom of the DAF tank.
Read more about this topic: Dissolved Air Flotation
Famous quotes containing the words drinking, water and/or treatment:
“Don’t say, don’t say there is no water
to solace the dryness at our hearts.
I have seen
the fountain springing out of the rock wall
and you drinking there.”
—Denise Levertov (b. 1923)
“it
was my first doll that water went
into and water came out of much
earlier it was the diaper I wore
and the dirt thereof and my
mother hating me for it”
—Anne Sexton (1928–1974)
“[17th-century] Puritans were the first modern parents. Like many of us, they looked on their treatment of children as a test of their own self-control. Their goal was not to simply to ensure the child’s duty to the family, but to help him or her make personal, individual commitments. They were the first authors to state that children must obey God rather than parents, in case of a clear conflict.”
—C. John Sommerville (20th century)