Hanmer
Wastewater
Facilities
Hanmer
Wastewater
Facilities
Process
Overview
Process
Overview
°
All
Process
All
Process
Wastewater
flows
to
Wastewater
flows
to
the
waste
treatment
the
waste
treatment
pump
house.

pump
house.
°
Wastewater
is
either
Wastewater
is
either
pumped
to
the
pumped
to
the
Primary
Clarifier
Primary
Clarifier
°
or
flows
into
the
or
flows
into
the
Emergency
Pond
for
Emergency
Pond
for
storage.

storage.
°
Solids
from
the
Primary
+

Solids
from
the
Primary
+

Waste
Activated
Sludge
Waste
Activated
Sludge
solids
are
pumped
to
the
solids
are
pumped
to
the
Sludge
Holding
Tank
Sludge
Holding
Tank
°
The
Sludge
Holding
Tank
The
Sludge
Holding
Tank
supplies
solids
for
the
2
supplies
solids
for
the
2
filter
presses
that
de
filter
presses
that
de­

water
the
solids
to
25%

water
the
solids
to
25%
Solids:

Solids:

°
The
solids
are
then
The
solids
are
then
hauled
daily
by
CDR
hauled
daily
by
CDR
Synagro
for
land
Synagro
for
land
application
application
Solids:

Solids:

°
Composting
studies
Composting
studies
have
also
been
done
have
also
been
done
for
future
beneficial
for
future
beneficial
use
and
as
an
use
and
as
an
economic
alternative
economic
alternative
to
land
application
.

to
land
application
.
Composted
Sludge
Normal
Soil
Wastewater
Wastewater
°
Overflow
from
the
Overflow
from
the
Primary
Clarifier
plus
Primary
Clarifier
plus
Return
Activated
Sludge
Return
Activated
Sludge
from
the
Secondary
from
the
Secondary
Clarifier
flow
into
the
Clarifier
flow
into
the
activated
sludge
activated
sludge
Bardenpho
process
where
Bardenpho
process
where
Phosphorus
and
Ammonia
Phosphorus
and
Ammonia
are
treated
below
VPDES
are
treated
below
VPDES
Discharge
Permit
limits
Discharge
Permit
limits
Wastewater
Wastewater
°
Ferric
chloride
is
Ferric
chloride
is
added
at
the
end
of
added
at
the
end
of
the
Bardenpho
the
Bardenpho
process
if
necessary
process
if
necessary
to
further
reduce
to
further
reduce
phosphorus.

phosphorus.

°
Then
the
wastewater
Then
the
wastewater
flows
to
the
flows
to
the
secondary
clarifier.

secondary
clarifier.
Wastewater
Wastewater
°
Overflow
at
the
Overflow
at
the
secondary
clarifier
has
secondary
clarifier
has
a
small
amount
of
de
a
small
amount
of
de­

foamer
added
before
foamer
added
before
flowing
to
a
Parshall
flowing
to
a
Parshall
flume
where
the
flow
flume
where
the
flow
is
measured
prior
to
is
measured
prior
to
discharge
back
into
discharge
back
into
the
James
River
the
James
River
