Experimental Study on Activated Carbon Adsorption for Treating Effluents from Oil-field Wastewater Treatment Facilities

An on-site pilot experiment was conducted,which involved application of granular activated carbon(GAC) adsorption to advanced treatment of the effluent from an oil-field wastewater treatment facility equipped with separation-coagulation-filtration plus biological hydrolytic acidification-oxidation process. The experiment included both static adsorption using a shaker and dynamic adsorption operated in a plexiglass column. Based on the continuous run,this paper put forward the adsorption design data for engineering application. Besides,GC-MS was used to verify the removals by adsorption of halo-hydrocarbons,heterocyclic compounds and carboxylic acid derivatives. It was also found that major compounds in the treated effluent were large molecular organic acids,which were identified as non-polar hydrophobic organic compounds through the analysis of organic conceptual diagram.