Construction and commissioning of Ampol Refinery ( now Caltex Refinery ) was completed in 1965. It is an integrated refinery with two crude processing units, fluid catalytic cracking, HF alkylation, polymerisation and catalytic reforming. The refinery has an advanced waste water treatment system which includes segregated oily, contaminated water and storm water systems, and secondary biological treatment plant.
The Existing Process
Solid waste management in the refinery’s early days was comparable with the petroleum industry standards at the time. However, these standards and the refinery waste management practices along with them, have undergone substantial changes over the last three decades. These changes occurred due to a variety of reasons namely company policies, economic conditions, regulatory and licensing requirements, health, safety and changing public attitudes. This case study aims to present a detailed description of improvements in the refinery’s solid waste management over the last decade and some of the results achieved.
A number of solid wastes from various sources are generated in the refinery manufacturing process. The majority of these wastes are of a hazardous nature due to contamination with hydrocarbons and other contaminants. These wastes have been categorised and tested and, for most of them, Material Safety Data Sheets have been developed. Table 1 characterises major wastes generated at the present time.