Influence of effluent particles and particle-bound micropollutants on the removal of micropollutants and UVA in wastewater effluent ozonation.

This study systematically investigated the influence of effluent particles and activated sludge (AS) particles on the removal of micropollutants via wastewater effluent ozonation within typical effluent total suspended solids (TSS) concentrations. A series of batch experiments revealed that particle concentrations up to 30 mg/L had a minor impact on the removal of organic micropollutants (OMPs) in the aqueous phase. Moreover, the reduction of UV absorbance at 254 nm (UVA) was negatively correlated to the level of particle concentration at ozone doses higher than 0.