BY-PRODUCTS FROM A PETROCHEMICAL EFFLUENT TREATMENT-PLANT - THE CASE OF SITEL

Normal unit operations conducted at SITEL, the integrated wastewater treatment system of South Petrochemical Complex, Triunfo, State of Rio Grande do Sul, Brazil, generate several by-products that must be handled separately: sludges, slurries, scums, garbage, grit, containers, etc. Some are hauled to the Centralized System of Control of Solid Residues (SICECORS); others are disposed of within SITEL battery limits. This paper presents and discusses their origin, production, chemical constitution, final destination and provides a detailed comparison between the main residues. A revision of the current classification criteria is proposed.