By making analysis on the problems existing in original treatment process of a chemical industry wastewater treatment plant,the modification scheme for comprehensive treatment of propylene oxide(PO) saponification wastewater by using oil refinery and petrochemical wastewater as dilution water was presented.

Discussion on UV_(254) as a predictive index of advance treatment effect for refinery wastewater;

Exploratory test for advanced treatment of refinery wastewater;

Photocatolytic degradation of refinery wastewater with nanometer TiO_2;

Study on treatment of oil refinery wastewater by polysilic aluminium sulphate flocculant;

The physicochemical pretreatment process for oil refinery wastewater was studied.

Experience of oil refining wastewater recovery by the process of combined ultrafiltration and reverse osmosis;

Aiming at serious pollution and no good biochemical quality in refinery sewage,hydrolytic acidification was used to treat it.

Simulating the refinery sewage treatment system, the improved system can not only separate the sludge from the stream ,but also improve the denitrification by secondary sedimentation and adding soften package fiber in secondary sedimentation of the pilot sewage treatment plant in H-O-R process( hydrolysis-acidifying - aerobic- denitrogen ).

The degradation of ammonical nitrogen in the refinery sewage by means of the activated sludge A/O procese is studied through experiments.

Study on oil-refining wastewater treatment by PFSS flocculation-membrane separation;

The integrated hydrolytic acidification-biological aerobic filter was used to treat oil-refining wastewater.