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Difficult Pumping Applications from
Blackhawk Environmental Company
BLACKHAWK ENVIRONMENTAL COMPANY’S Anchor Pump was used
to successfully recover creosote oil from a 100-year-old wood
preserving operation that produced wood products. The creosote,
used to preserve the wood, was leaked, spilled, dumped and
ponded on the site and had sunk into the groundwater.
To clean up the site, pneumatic environmental pumps were
placed in wells to recover the creosote product. From the
start the pneumatic environmental pumps had a difficult time
recovering the creosote. Their flow rate was less than 8 oz
per hour. The pumps would clog, seals would deteriorate and
compressed air lines that went down the well to power the
pump would leak. The oil recovery wells had to be taken out,
on a regular basis, to be repaired or cleaned. Often a two-man
crew was required to maintain the operation.
The Blackhawk Anchor Piston Pump was chosen as an alternative
to this labor-intensive operation and to provide a more effective
way to recover the creosote oil. The Anchor Pump offered several
advantages:
- all drive motor working parts located on top of the well
make the pump easy maintain and look at
- top head drive oil well sucker rod pump that is more
effective at recovering thick oily liquid
- smooth controlled flow recovery with the ability to tune
the speed and strength of the recovery to the yield of the
formation being pumped
- a plunger pump, with a reciprocation action, that mechanically,
actively recovers fluid from the bottom of the well independent
of liquid level in the well while maintaining a constant
flow recovery rate
- a drive motor on top of the well to ensure that no compressed
air enters the well or comes in contact with fluid being
pumped
The Anchor Pump was placed in a 250’ thick, tar laden
well. Other pneumatic environmental pumps could only be placed
to a 150' depth because the creosote was too thick for them
to pump. The Anchor Pump was specially designed to be low
profile at surface grade to fit into a protective doghouse.
Its stoke was 6" and it was set to pump 4 strokes/min.
or 8 oz/min. Upon installation and start up, the Anchor Pump
ran continuously and after five days, it was pumping a water
creosote mixture. Initially the pump pumped thick no. 6 tar-like
creosote for 4 days and on the 5th it started to pump oil
and creosote.
The unit has allowed one man to run the system, requires
no down hole maintenance repairs and produces more product,
less disturbed and of better oil treatment quality than before.
Blackhawk Environmental Company provides pumping solutions
for the environmental, landfill, groundwater and industrial
markets. Blackhawk specializes in manufacturing quality pumps
and controls for demanding pumping applications.
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