79 بهوسیله ...یاینعقاد شیمیزنی و اد ازن فراینیراین / کارار و همکا مهدیپو ABSTRACT Background and objectve: One of the industries producing environmental pol- lutant is the rubber industry, which has a lot of in environmental dangers. This study was conducted in the purpose of investgaton on Ozone and coagulant material’s (Aluminum sulfate –Ferric chloride) efciency in waste water treat- ment of Rubber Industry. Materials and Method: In this work Rubber industries with the industrial waste volume over 2500 m3 per mount was studied. In order to qualitatve evaluaton of wastewater in this industry, the reducton of turbidity and the amount of COD were considered as the qualitatve criteria. Results: In this study, the reducton rate of COD by chemical treatment with Ferric chloride afer ozonaton was 34 percent and the wastewater of chemical treatment with aluminum sulfate afer ozonaton shown 48 percent, the reduc- ton of COD. Conclusion: One of the scientfc and practcal approaches for the treatment of wastewater in these industries is the use of complex process like chemical coagulaton and ozonaton along with possible biological processes. Paper type: Research artcle Keyword: Rubber industry, Chemical coagulaton, COD, Ozonaton  Citation: Mehdipoor, M. Dehghani, MH. Nasseri, S. Nadaf, K. & Mahvi, AH. Efciency of Ozonaton and Chemical Coagulaton Using Aluminum Sulfate and Ferric Chloride for Reducton of COD from Wastewater of Rubber Industry. Ira- nian Journal of Research in Environmental Health.Summer 2015;1 (2) : 79-84. Mohsen Mehdipoor Tehran University of Medical Sciences, School of Public Health, Department of Environmental Health Engineering, Tehran, I.R.Iran. Mohammad Hadi Dehghani * Professor, Tehran University of Medical Sciences, School of Public Health, Department of Environmental Health Engineering, Tehran, I.R.Iran. (Corresponding author). Email: hdehghani@tums.ac.ir Simin Nasseri Professor, Tehran University of Medical Sciences, School of Public Health, Department of Environmental Health Engineering, Tehran, I.R.Iran. Kazem Nadaf Professor, Tehran University of Medical Sciences, School of Public Health, Department of Environmental Health Engineering, Tehran, I.R.Iran. Amir Hossein Mahvi Assistant Professor, Tehran University of Medical Sciences, School of Public Health, Department of Environmental Health Engineering, Tehran, I.R.Iran. Received: 27 April 2015 Accepted: 26 July 2015 Journal of Research in Environmental Health Volume 1, Issue 2, Summer 2015 79 Efciency of Ozonaton and Chemical Coagulaton Using Aluminum Sulfate and Ferric Chloride for Reducton of COD from Wastewater of Rubber Industry