Various
kinds
of
flocculating
agents
are
used
in
a
wide
range
of
industrial
fields.
Inorganic
agents
such
as
aluminium
sulfate,
polyalu-
minium
chloride,
ferric
chloride
and
activated
silica
are
frequently
used
for
tap
water
and
waste
water
treatment.
Organic
synthetic
polymers
such
as
polyacrylamide
derivatives,
polyvinylpyrimidine,
polyethylene
imine,
so-
dium
polyacrylate
and
so
on
are
efficient
floc-
culating
agents
for
plant
waste
water
treat-
ment
and
improvement
of
industrial
proc-
esses.
Naturally
occurring
materials
such
as
chitosan,
guargum,
sodium
arginate
and
gela-
tine,
which
show
only
weak
actions,
are
also
used
for
improvement
of
food
processes.
There
is
a
potential
need
for
strong
and
safe
flocculating
agents
in
·the
fermentation
and
food
industries.
Since
harvesting
or
removal
of
microbial
cells
from
cultured
broth
is
a
very
important
but
energy
consuming
process
in
the
fermentation
industry,
safe
and
strong
agents
may
be
very
useful
for
improving
the
process
as
a
substitute
for
centrifugation
or
filtration
Various
kinds
of
flocculating
agents
are
used
in
a
wide
range
of
industrial
fields.
Inorganic
agents
such
as
aluminium
sulfate,
polyalu-
minium
chloride,
ferric
chloride
and
activated
silica
are
frequently
used
for
tap
water
and
waste
water
treatment.
Organic
synthetic
polymers
such
as
polyacrylamide
derivatives,
polyvinylpyrimidine,
polyethylene
imine,
so-
dium
polyacrylate
and
so
on
are
efficient
floc-
culating
agents
for
plant
waste
water
treat-
ment
and
improvement
of
industrial
proc-
esses.
Naturally
occurring
materials
such
as
chitosan,
guargum,
sodium
arginate
and
gela-
tine,
which
show
only
weak
actions,
are
also
used
for
improvement
of
food
processes.
There
is
a
potential
need
for
strong
and
safe
flocculating
agents
in
·the
fermentation
and
food
industries.
Since
harvesting
or
removal
of
microbial
cells
from
cultured
broth
is
a
very
important
but
energy
consuming
process
in
the
fermentation
industry,
safe
and
strong
agents
may
be
very
useful
for
improving
the
process
as
a
substitute
for
centrifugation
or
filtration
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