Making Water Drinkable

heehawultraMechanics

Feb 22, 2014 (2 years and 9 months ago)

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Making Water Drinkable




water treatment

floc

sustainability


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
disease
-
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

supply.


10.5


During the
Intake
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


The
Sedimentation

Process is when the
floc

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

before it moves on to
final filtration



The final
Filtration

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


Disinfection
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
stored

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