...
Spring
...
2008
...
Demo
...
Plant
...
Sedimentation
...
Tank
...
Design
...
The
...
new
...
sedimentation
...
tank
...
design
...
proposed
...
in
...
Spring
...
2008
...
will
...
address
...
the
...
problem
...
of
...
uneven
...
flow
...
lengths,
...
rates,
...
and
...
shears
...
through
...
each
...
lamella
...
of
...
the
...
sedimentation
...
tank
...
in
...
the
...
Spring
...
2007
...
Demo
...
Plant.
...
This
...
problem
...
is
...
further
...
described
...
in
...
the
...
...
...
...
...
page.
...
The
...
proposed
...
sedimentation
...
tank
...
will
...
be
...
oriented
...
perpendicular
...
to
...
the
...
axis
...
of
...
the
...
flocculator.
...
Additionally,
...
to
...
accommodate
...
the
...
new
...
design,
...
water
...
will
...
exit
...
the
...
flocculator
...
from
...
the
...
top,
...
instead
...
of
...
the
...
bottom.
...
In
...
order
...
to
...
eliminate
...
differences
...
in
...
lengths
...
of
...
flow
...
paths
...
through
...
the
...
sedimentation
...
tank,
...
water
...
exiting
...
the
...
flocculator
...
will
...
be
...
split
...
into
...
several
...
tubes
...
of
...
equal
...
diameters
...
and
...
lengths,
...
which
...
will
...
enter
...
the
...
bottom
...
of
...
the
...
sedimentation
...
tank.
...
The
...
tubes
...
entering
...
the
...
sedimentation
...
tank
...
will
...
be
...
evenly
...
spaced.
...
The
...
sedimentation
...
tank
...
itself
...
will
...
be
...
redesigned
...
so
...
that
...
lamella
...
still
...
form
...
the
...
optimal
...
60
...
degree
...
angle.
...
However,
...
the
...
lamella
...
will
...
now
...
guide
...
the
...
water
...
in
...
a
...
path
...
parallel
...
to
...
the
...
axis
...
of
...
the
...
flocculator,
...
so
...
that
...
the
...
whole
...
tank
...
will
...
have
...
an
...
incline,
...
and
...
will
...
need
...
to
...
be
...
either
...
very
...
bottom-heavy,
...
or
...
have
...
a
...
support
...
for
...
the
...
upper
...
ends
...
of
...
the
...
lamella.
...
This
...
design,
...
along
...
with
...
the
...
new
...
entry
...
method,
...
will
...
normalize
...
the
...
head
...
loss
...
through
...
individual
...
channels
...
in
...
the
...
sedimentation
...
tank.
...
The
...
proposed
...
sedimentation
...
tank
...
will
...
also
...
incorporate
...
an
...
open-top
...
design,
...
similar
...
to
...
the
...
flocculator
...
of
...
the
...
Fall
...
2007
...
Demo
...
Plant.
...
This
...
design
...
also
...
allows
...
us
...
to
...
consider
...
the
...
incorporation
...
of
...
a
...
drain
...
for
...
built
...
up
...
sediments
...
in
...
the
...
sedimentation
...
tank,
...
adding
...
the
...
functionality
...
to
...
clean
...
the
...
sedimentation
...
tank
...
while
...
the
...
plant
...
is
...
still
...
running.
...
The
...
...
...
and
...
...
...
of
...
the
...
proposed
...
sedimentation
...
tank
...
have
...
been
...
uploaded.*