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Oil Master
OilMaster offers an economical way to
separate oil from waste water so the
water can easily and legally be discharged.
There are no filters to replace,
no cleaning or maintenance, and it runs
unattended day in and day out. What
could be easier? NFS has set the standard for years in coalescer
oil water filtration. Well guess what?
Now we have gotten even better. Allen
Bradley’s Micrologix 1200 Processor is
running the show.
Robert Shaw digital
interface detectors and
a Dwyer lower level
safety sensor round
out the control system.
With all Allen Bradley
internal components,
single or three phase
power can be installed
without changing controls. The state of the
art electronics using micro-relays make it a
snap to trouble-shoot.
These units are proudly
Made in the U.S.A.
System Description
Separator Unit
A sealed tank with the lower portion containing the
unique NFS coalescer elements. The upper part acts
as a gravity Separator and holding area for the separated
oils. The electronic interface detectors which
provide precise control of the intake and discharge
cycles are located externally on the upper tank.
Pump & Valve Unit
The low maintenance of a quality centrifugal pump
with a balanced bronze impeller is teamed with
brass solenoids and bronze valves which provide
force and direction to process the liquids. All are
mounted on a steel base plate.
Control Unit
Hoffman steel enclosure with state of the art components
programmed to control the system operation
in response to signals provided by internal and
external sensors, allowing round the clock operation.
Sensors
External level sensors, foot valve/strainer for the
influent source, direct reading flow meter in the
processed water discharge line, backflush pressure
regulator are all standard items to provide a complete
system.
System Operation
Influent
Supplied as standard equipment the level sensors
and foot valve/strainer are mounted in the sump
containing the mixture to be processed. Closure of
the high level sensor signals the system to process
the oil/water mixture.
Separator
The incoming mixture is routed to the top of the vessel,
entering the maintained oil layer with minimal
turbulence. As oil has a natural affinity for oil, some
of the dispersed oil will remain in the upper level due
discharge mode. Clean water flows into the coalescing
chamber, through the coalescing elements dislodging
the remaining oil droplets pressurizing the
chamber and the entire vessel thus discharging the
collected oil into the external oil storage tank. This
backflush mode continues until water is sense by
the upper detector, returning the system to the
intake mode.
Protection
Back-up safety devices include a lower level compacitance
sensor with probe mounted above the coalescing
chamber to prevent accidental discharge of oil to
the pump. The control unit is equipped with an output
and warning light for high oil storage level. The
remote sensor is not included but easily installed if
desired. Check valves and solenoid valves insure
proper routing of the various liquid phases.
to molecular attraction. An even larger amount will
remain due to gravitational separation as the specific
gravity of the oil is less than water.
Coalescer
The lower half of the vessel contains the Coalescing
chamber. Here the partially separated liquid enters
via intake ports in the bottom wall, allowing maximum
retention time for gravitational separation. The
180 degree turn allows centrifugal force to remove
heavy solids which settle to the vessel bottom.
Remaining oil is removed as the oil/water passes
through a series of 9 coalescing elements. These
elements, mounted vertically on CRES supports, are
saturated with water at all times to allow liquids having
same surface tension properties as water to pass
freely. Other liquids having dissimilar properties are
coalesced on the surface elements. The droplets
migrate toward each other, form larger droplets and
break off to the top. Clean, oil free water is passed
through the pump for disposal or reuse.
Interface
The separation process results in an increasing oil
layer at the top of the unit. The size of this layer
increase until it’s presence is detected by the lower
interface detector. This actuates the backflush or oil
Technical Specfications
Height: 6 ft
Weight: 750 lbs
Pump: 10 gpm
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