The wastes produced by petrochemical production processes are by large, hazardous.
There is, therefore, a high level of expertise required for appropriate, environmentally positive management of wastes such as redundant raw materials, wax emulsions, separator sludges, TEL sludges, spent caustic, spent catalysts, oil and water, crude oil sludge, contaminated soil (hydrocarbon), filter cake, clay filter, grit, effluent waste, hydrocarbons (liquids/sludge), sewerage sludge, refractory bricks, spent coke, contaminated ceramics, laboratory waste, asbestos, salt contaminated with kerosene, sulphur (solid), bitumen/asphalt, acids, and a range of chemicals.