Making Water Drinkable


22 Φεβ 2014 (πριν από 7 χρόνια και 8 μήνες)

271 εμφανίσεις

Making Water Drinkable

water treatment



Water treatment
is the process of making water suitable for a
desired end
use (such as drinking) or returning it to its
natural state.

Water may also be treated with UV light, or boiled to remove
causing organisms.

There is no process at water treatment plants to remove
substances such as pharmaceuticals (antibiotics and birth
control chemicals) and oil
based liquids (motor oil and paint)
from the water. It is very important that we keep

these substances out of our water



During the
process, large objects such as sticks,
leaves and garbage are removed from the water. A
metal screen or filter is placed over the intake pipe to
stop these contaminates

The next stage is the
Addition of Chemicals

into the
water. Alum is added, which causes the remaining
small particles to be trapped in a sticky substance that
floats to the surface


Process is when the

begins to
settle to the bottom of the sedimentation tank. Sand or
small gravel filters out the

before it moves on to
final filtration

The final

process runs the water through a
fine particle filter to remove the remaining particles and
fine sediment that has made it this far. Often these
filters contain carbon to aid in the filtration process

is when chemicals are added to the water
system to kill any microbes or bacteria that may remain
in the water system. Chlorine is added to kill bacteria
and fluoride to help protect your teeth

Water is then

in large contained water tanks to
be sent to your local neighborhoods and homes