الفهرس 
Introduction and Literature review.Only 14 pages are availabe for public view
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Abstract
Several
experiments
were
conducted
on removal ratio of algae upto84,1%. When aluminum sulphate
was used injunction with bentonite sodium,
bentonite calcium, or bentonite iron, the maximum
removal ratios of algae achieved were 81.9%, 89.3%,
and 86.0% respectively,plain sedimentation gives a
removal ratio of algae not exceeding 63.7%.
2. Reuse of primary chemical sludges cropped from
the treatment of raw water with aluminium sulphate
or aluminum sulphate aided with different
coagulant aids in junction with a new chemical
doses of coagulant and coagulant aids in treating
a new water samples.
These series of experiments proved that aluminum
sulphate with bentonite calcium in the presence
of returned sludge give best results.
The removal ratio of algae by this method of
treatment approached 99%.
3. Reuse of primary chemical sludge-cropped from
the treatment of raw water with aluminum sulphate
or aluminum sulphate aided with different
coagulant aids-after being treated with calculated
amount of concentrated sulphuric acid.
The chemically treated sludge was considered
raw
water
samples
collected
from
two
sources.
The
first
was
the
river
Nile
at
Roda
water
treatment
plant.
The
second
source
was
lsmalia
canal
at
Mostorod
water
treatment
plant.
The
purpose
of
this
work
was
to
de-
velop
a
suitable
method
for
water
treatment
that
achieve
high
removal
ratio
of
algae
from
raw
water.
Ac-
cordingly
the
following
methods
of
treatment
were
inves
tigated
:
1.
Use
of
coagulants
with
or
without
coagulant
aids
for
algae
removal
from
raw
water
samples
as
descriped
below
:
*
Aluminum
sulphate
only
as
coagulant.
*
Aluminum
sulphate
and
bentonite
sodium
as
coagulant
aid.
*
Aluminum
sulphate
and
bentonite
calcium
as
coagulant
aid.
*
Aluminum
sulphate
and
bentonite
iron
as
coagulant
aid.
The
outcome
of
these
series
of
experiments
indicated
that
the
processes
of
chemical
coagulation
and
sedimentation
using
aluminum
sulphate
as
coagulant
give