Oily Water Separator (OWS) Principle and Working

    Principle of Operation:
    >  The principle of operation of OWS is the gravity difference between oil and water
    > The force acting on an oil globule causing it to move in the water is proportional to the difference in weight between the oil particle and a particle of water of equal volume.
            Fs = separating force
           Pw = density of water
     Po = density of oil globule
        d = diameter of oil globule
        g =  acceleration due to gravity

    > The resistance to the movement of the globule depends on its size and viscosity of the fluid.
    > For small particles moving under stream line flow the relationship between these properties is expressed by Strokes Law:
    Fr  =  3pmnd
    Fr = resistance to movement
    m = viscosity of fluid
    n = terminal velocity of particle
    d = diameter of oil particle

    > When separation of an oil globule in water is taking place, 
     Fs = Fr 

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