Environmentally friendly way of handling industrial effluents is the most important conceptrnfor industries direct and/or indirect contribution of a countryâ€™s sustainable development. Inrn12rnorder to achieve such goals biological processes play the major role. This study was alsorninitiated to evaluate the treatment performance of a laboratory scale anaerobic/anoxic/aerobicrn(A/A/A) bioprocess system for the removal of phosphorous from brewery wastewater. Forrnthis purpose the treatment plant was fed with raw brewery wastewater collected from St.rnGeorge Beer Factory at three different organic loading rates (OLR) (0.5, 0.75 and 1 kgrnCOD/m3 day). The set-up was inoculated with sludge biomass obtained from the oxidationrnponds of Meta Abo Beer Factory. And the treatment performance of the set-up was evaluatedrnusing the parameters PO4-3, TN, NH4+-N, NO3--N, COD, BOD5 and pH concentrations. Thernresults showed that brewery wastewater used in this study was medium to high strengthrnwastewater with COD, BOD5, PO4-3, TN,NH4+-N and NO3- -N values ranging from 1860-rn3880, 484-636, 31.9-121.7, 44-78, 12.2-54.2 and 13-36 in mg/l, respectively. The set-up usedrnwas able to achieve 80.0, 78.9 and 66.8 % removal of PO4-3, 69.7, 67.6 and 54.0 % removalrnof TN, 95.67, 93.8 and 87.9 % removal of NH4+-N and 51.1, 46.5 and 44.3 % removal ofrnNO3- -N at 0.5, 0.75 and 1 kg COD/m3 day of OLRs, respectively. In addition to these thernbioprocess gave 97.2, 96.5 and 95.6 % removal efficiencies for COD and 92.8, 91.7 and 89.3rn% removal efficiencies for BOD5 at OLRs of 0.5, 0.75 and 1 kg COD/m3 day, respectively.rnThe laboratory scale treatment plant performed well and gave maximum removal efficienciesrnat organic loading rate of 0.5 kg COD/m3day where TP (PO4-3), TN, NH4+-N, NO3--N, CODrnand BOD5 concentrations decreased from 54.9, 71, 39, 36, 2240 and 636 mg/l to 11.0, 21.5,rn1.7, 17.6, 62 and 46 mg/l, respectively. There was a correspondence observed between thernmaximum removal efficiency of the set-up and the increase in biomass concentration of thernsystem. The results of this study indicated the possibility of handling brewery wastewaterrnbiologically in an environmentally friendly manner using A/A/A biological nutrient removalrnconfiguration.