Water
Purification
Process
____________________
:
screens
for
large
materials
2
.
____________________
:
chemical
coagulation
and
addition
of
precipitates
such
as
aluminum
3
.
____________________
:
removes
suspended
solids
4
.
Sludge
____________________
:
addition
of
anaerobic
bacteria
5
.
____________________
____________________
:
removes
anaerobic
bacteria
6
.
____________________
:
Adds
oxygen
to
water
to
improve
color
and
taste
or
kills
remaining
anaerobic
bacteria
as
well
7
.
____________________
:
kills
all
bacteria
8
.
Possible
____________________
:
prevents
tooth
deca
y
