The investigation of catalytic ozonation and integrated catalytic ozonation/biological processes for the removal of XXXX from saline wastewaters.

@entity1219 @entity1650 @entity3971 @entity3787 @entity505 @entity1787
The effectiveness of the @entity1650 ( @entity1650 ) with a GAC catalyst was assessed based on the degradation and COD removal of @entity3971 from the saline wastewater, as compared with the single ozonation process (SOP). The @entity1650 attained a much higher level of @entity3971 degradation compared to the SOP. The influence of several variables was investigated, including pH of solution, @entity1219 concentration, and dosage of GAC, for their effects on @entity1650 @entity3971 degradation in a synthetic saline wastewater. The maximum degradation of @entity3971 was achieved at pH 8 and 20 g/L GAC. @entity1219 had no adverse effect on @entity3971 removal at ranges between 0.5 and 50 g/L. The activated @entity505 acted mostly as a catalyst for @entity1787 decomposition, and the subsequent generation of @entity3787 radicals. Furthermore, the GAC preserved its catalytic properties after 5 times reuse. The capability of a biological process to treat @entity1650 effluent was also investigated. Results showed that a 10 min reaction time in @entity1650 under optimum conditions reduces the concentrations of @entity3971 and COD to an acceptable level for efficient post-treating in a suspended growth bioreactor at a short aeration time of 4h. Thus, the integration of @entity1650 with a biological process is proven to be a technically and economically effective method for treating saline wastewaters containing recalcitrant compounds.
