Solid Waste and Solidification

Treatment and Stabilisation of Oil Refinery Residues

A treatment process was developed for the residues from the treatment of waste waters and surface run off from an Oil Refinery in the USA which were previously lagooned and then periodically land farmed.

These residues contained varying proportions of oils and oily solids together with wasted biomass from the existing biological treatment process which formed the final treatment stage for these waters before they were discharged.

As a result of the RPA developed process, virtually all of this oil was recovered and the final weight of material which had to be shipped off site for hazardous waste disposal was approximately 20% of that which would have been produced by the alternative proposals which were about to be installed prior to the RPA involvement. In addition, the principal treatment reagent that was required for the RPA process was an existing site produced waste.

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