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A water purification plant in Malaysia was experiencing significant problems
lime chemical
as part of problems
their treatment
process.
A water purification plant in Malaysia when
was handling
experiencing
significant
when
handling lime chemical
as part of their treatment process.
reviously, the plant had
solenoid metering pumps
pumps installed for the dosing of the
installed for the dosing of
chemical. Solenoid metering pumps are
the chemical. Solenoid me-
known for their highly accurate delivery of
tering pumps are known for
however in the case of handling
their chemicals,
highly accurate
delivery of chemicals,
lime this
pump
type of often
experiences
however
in the
case
handling
lime this
difficulties
due to experiences
the nature of the
lime
pump
type often
difficulties
chemical.
Lime of
chemical
is a chemical.
suspension
due to
the nature
the lime
P
Previously, the plant had solenoid metering
of the milled lime in water, which has a
Lime distinct
chemical
is a suspension
the of milled
tendency
to ‘coat’ all of
areas
the
lime pump
in water,
has particles
a distinct
tenden-
due which
to the lime
falling
out of
cy to suspension
'coat' all areas
of the pump due to the
and culminating in a stubborn
lime particles falling out of suspension and
build-up. As the fluid passes through the
culminating in a stubborn build-up. As the
metering pump, the ball valves, small tubes
fluid passes through the metering pump,
and chambers begin to block, similar to a
the ball valves, small tubes and chambers
artery furring with fatty deposits.
begin human
to block,
similar to a human artery
furring with fatty deposits.
This eventually causes a significant
This blockage
eventually
significant
and causes
a rise in a back
pressure, block-
age which
and a causes
rise any
in back
sealing pressure,
to fail and which
causes
any sealing leak,
to fail
and the
catastroph-
catastrophically
coating
ically surrounding
leak, coating
the surrounding
envi-
environment
with the chemical,
ronment
with
the
chemical,
which
is
very
which is very difficult to remove. For every
difficult
to
remove.
For