Abdolreza Karbassi - Department of Environment, University of Tehran, Tehran, Iran
Maryam Pazoki - Department of Environment, University of Tehran, Tehran, Iran

One of the industrial areas in the south of Iran is Bandar Imam Petrochemical Economic Zone which has a lot of petrochemical complex, Farabi Petrochemical complex is one of those places. Coagulation/flocculation could be a typical methodology in water and wastewater treatment that a number of chemicals are added to assist the coagulation/flocculation and causes to the sedimentation. In this paper, the sampling and measurement of characteristics wastewater containing turbidity, pH, COD, TDS and etc. were done, also Efficiency of coagulant was assessed in terms of the COD, TDS and turbidity also the optimum concentration to determine the coagulant and the pH effluent were investigated.The results show that the optimum coagulants for decreasing organic matters of wastewater, the amount of coagulant is 10mm per liter of wastewater. With this amount can be reduced by more than 50% of COD

Wastewater, effluent, Farabi Petrochemical complex, coagulant, jar test