AWWA ACE69013

This powerpoint presentation begins by providing a brief overview of Zheng Jiang City, China, and the Jinxi Water Treatment Plant (Zhen Jiang). The objective of the study includes the following: to investigate whether the combined ozone (O3) and biological activated carbon (BAC) processes, as an advanced treatment, were investigated to reduce the dissolved organics in effluent after conventional treatment. The experimental approach includes the pilot-scale set up, analytical components included CODMn, DOC, UV254 and THMFP. Presentation conclusions indicate the following: the favorable conditions were determined for removal of CODMn, UV254, and DOC: O3=1 mg/L, BAC contact time=8.6 min; UV254 and THMFP were significantly removed in coagulation/sedimentation, and further reduced by the ozonation; the combination of O3 and BAC could further reduce CODMn and DOC; and, O3 +BAC primarily removed high MW organic molecules. Includes figures.