earticle

영어

In this study, a GPS-X model was used to design the advanced treatment process of petrochemical wastewater, and the operating conditions and treatment process were determinated by computer simulation. An A2O process using an ASM2d model of GPS-X was simulated for evaluation of the treatment efficiency of petrochemical wastewater.The fraction of Ss, Si, Xs and Xi of influent COD in petrochemical wastewater were 14.5%, 27%, 14.5%, and 44%, respectively. These value were two times more than those of general municipal sewage. Removal efficiencies of BOD5, COD, SS, TN and TP in the A2O process were 96%, 66%, 87%, 86% and 58%, respectively. The reason of low COD removal efficiency of effluent caused to the hardly treated inert organic matter in influent. Also, lower removal efficiency of TP caused to the lower biodegradable COD concentration in petrochemical wastewater. Increment of SRT in each stages showed a little improvement in treatment efficiency. The addition of coagulants to the pre-treatment basin was one of the alternative methods for improvement of the treatment efficiency of petrochemical wastewater. Soluble inert organic matters were removed more 25% and particulated inert organic matters were almost removed.