Research of Treatment Technology of Petrochemical Wastewater

At first,the analysis stated the treatment situation of petrochemical wastewater.The treatment processes of the several kind of major petrochemical wastewater were stated,such as oil-bearing wastewater,sulfurcontaining wastewater,naphthenic acid wastewater,the wastewater containing phenol.Secondly,as an example,the treatment process of petrochemical wastewater of a large ethylene project in Sichuan was stated.The treatment process of petrochemical wastewater of a project in mainland in China which invested by a petrochemical enterprises in Taiwan was introduced for another example.The three stage process of pretreatment-biological treatment-reused depth was used in this example.It realized treatment of classification and relative concentration by the process.At last,the development of treatment technology of petrochemical wastewater was stated.The pretreatment technology should be intensified.The treatment technology of economic and effective should be exploited according to the principle of using water diversification and wastewater resources.