Sierra Process Systems was acquired by Clean Harbors in June 2012. The entity provides oil recovery, oily residuals separation, and recycling services to its customers. The company installs equipment and operates portable and fixed systems to process hazardous and non-hazardous oily residuals on site or at a central location. Oily residuals are mixtures and emulsions of hydrocarbons, water, and solids (organic and inorganic).
A suite of technologies to separate oily residuals into component parts are applied. Oil is reused for productive use. Water is disposed of or reused. Organic solids can be reused (e.g., in refinery processes, cement kilns) in the refining process. Inorganic solids are treated to become inert, non-hazardous materials.