Advance Oil/Solid Separation
Description of Tilted Plate - Interceptor Unit
Oil removal systems are required to recover maximum quantity of hydrocarbons
as well as to make effluent amicable for further treatment & also
to meet the pollution control requirements. The existing API type units
need
vast extensions of the surface area. To take care of oil globules of
smaller size so as to meet these requirements.
An enlarged separating surface, as discussed earlier can be achieved by
placing various smaller planes on the top of each other in tank. If these
planes are subsequently inclined in a fitted position, the oil/solids separated
between the plates can be removed by gravity. This principle has been realized
in the tilted plate interceptor unit With the objective of not disturbing
the particle size distribution unnecessarily. This system has preferably
to be fed by gravity. The oily water flows in to the interceptor through
various components and oil gets separated as described below :
1.
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A
double slotted baffle at inlet includes incoming water to flow evenly
uniformly to the entrance of the corrugated plate pack. |
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2.
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In
the plate pack the oil droplets are intercepted and coalesce in to large
droplets. They leave the pack rapidly countercurrent upwards against
the liquid flow of the surface. |
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3.
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Settleable
material, if the present in the aqueous phase is similarly separated
in the plate pack. It collects in the corrugated plate through and then
slides down to the sludge compartment. |
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4.
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The
treated clear water levels the plate pack at the bottom and gets discharged
over the weir to outlet nozzle. PWT is the first manufacturer to succeed
in launching the corrugated plate interceptor in a commercial and technically
attractive construction. Hundreds of complete advanced wastewater treatment
plants have since been put in to operation throughout the world. The
compact design and the high separating efficiency which are so characteristic,
for this gravitational system have unmistakably proven their value in
practice in the course of the time. |
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