Wastewater
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How It Works |
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Highland patented oil/water separators are stationary wastewater
treatment
vessels, filled with water. They contain specially designed internal
baffles and coalescers to accelerate the separation process. The
vessel is designed for unconfined access from above for inspection
and maintenance.
Inlet flow is directed against the velocity head diffusion baffle to
reduce flow turbulence and to distribute the flow evenly over the
separator's cross sectional area. In the sediment chamber, heavy
solids settle out and concentrated oil rises to the surface. The
oily water then passes through the Corella™
Coalescer, an inclined arrangement of stacked parallel flat and
corrugated plates. The corrugated underside of the Corella™ plates
causes the oil to coalesce into sheets. The oil globules then rise
to the surface of the separation chamber, where the separated oil
accumulates. Any remaining solids sink to the top of the plates and
slide off of the plates to the solids collection area. The effluent
flows downward to the outlet and is discharged by gravitydisplacement.
To intercept droplets of oil too minute to be removed by the
parallel-corrugated plates, we use a Petro-Screen™ polypropylene
impingement coalescer (an encased bundle of layeredoil-attracting
fibers).
Electronic oil level controls sound an alarm at high oil levels so
that waste oil can be removed from the separator. Double wall
separators are monitored with electronic leak detection systems for
the interstitial space.
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