Evaluation of Petrochemical Wastewater Treatment Technologies in Liaoning Province of China

Abstract The problem of petrochemical wastewater pollution is quite serious in Liaoning province of China. Evaluation based on current water treatment technologies is of significance for the improvement of water quality. Research on multi- level comprehensive mathematical evaluation model considering both sewage treatment effect and technical economic benefits would do great help to the implementation and construction of water pollution treatment process. The fuzzy & grey comprehensive method and the technology cost-benefit analysis method were used for evaluation of water treatment technologies applied in the petrochemical industry, based on statistical data in 2009 in Liaoning province of China. It is concluded that the most suitable technologies to treat petrochemical waste water are traditional biological filter method and biological aerated filters method.