Centrifuge

Typically, the centrifuge will require a polymer to flocculate the solid particles and perhaps a de-emulsifier to break emulsified oil/water/solid streams. The sludge is injected with the polymer (and de-emulsifier if necessary) in-line then passed through a static mixer to flocculate the solid particles (and water wet the solids by the action of the de-emulsification agent). Oily waste streams often benefit from heating (180 degrees F) to decrease viscosity and enhance the ultimate oil/water/solid separation. The conditioned sludge is pumped to and through the centrifuge using positive displacement feed pumps so as not to shear the floc formed by the polymer make-down and injection process.