Assessment of Heavy Metals Pollution in Wastewater of Petrochemical Industries

ABSTRACT The heavy metals concentration in wastewater of petrochemical industries were determined at different sampling stations of Abadan Petrochemical industries in Khozestan. The research was done in autumn 2009. The level of residual concentration of heavy metals was determined by Icp technique. The reason for this research was that wastewater of these industries, after treatment, pours into Arvand River, and the end destination is Persian gulf. Sampling from the sewerage outlets in different units of this complex were done on the working days in 9 station during 9 weeks. The heavy metals of Hg 2+ , Cd 2+ , Cr 2+ , Pb 2+ , Zn 2+ , Cu 2+ and Cr 3+ were identified in these samples