Chronic oily-water spills were observed in the Ob Ob drainage system. The overflow from the API skimmer was directed to a pond, so the site needed interception and filtration at strategic points. The solution had to combine containment, filtration and easy recovery of the saturated material, with water levels that change.
Boom lines (1) hold the oily water of the pond (3) while an operator handles a FoamFlex carpet (2).
Boom lines (1) hold the oily water of the pond (3) while an operator handles a FoamFlex carpet (2).
A pond test gave the numbers, and the filter design followed from them.
One FF200 half carpet was deployed on the oil at 33 C outside temperature, recovered, wrung out and used again for a second cycle.
Filtration grids were designed for insertion at the collection basin and conveyance channel. A cage system holds the FoamFlex filter cushions and makes extraction for wringing simple.
A compensation concept keeps interception stable when the level changes. Retention capacity can be sized from spill assumptions and worst-case scenarios.
One FF200 half carpet retained 15.28 L of Nigerian Brass Light Crude (API gravity 37.6, viscosity 3.7 mm2/s at 20 C) and 0 L of water, and was reused for 2 cycles.
Below 15 mm2/s viscosity the result is expressed as hydrocarbon retention rather than absorption.
The report suggests a gangway to simplify wringing logistics near the operating area. The official validation recommended operational use.
FoamFlex200 half carpet (FF200 half), 33 cm x 2.5 cm x 1.5 m, net weight 340 g, and filter cushions in cages for the collection basin (design concept).
Reusable absorbent carpet with velcro and handles, ideal for all types of spills and compatible with FF-WRING.
15.28 L of Nigerian Brass Light Crude in the Ob Ob pond test, with 0 L of water. The half carpet is 1.5 m long and weighs 340 g.
Place filtration grids at the collection basin or conveyance channel and hold FoamFlex200 filter cushions in cages. The cages let operators pull the cushions out for wringing.
A water-level compensation concept keeps the filter interception stable despite level changes, and retention capacity can be sized from worst-case spill scenarios.
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