Sequencing Batch Reactor Performance Evaluation on Orthophosphates and COD Removal from Brewery Wastewater

The discharge of industrial effluent constituting high orthophosphates and organic pollutants in water receiving bodies compromises freshwater quality perpetuates eutrophication. In this study, an anaerobic–aerobic sequencing batch reactor (SBR) under activated sludge was investigated for chemical oxygen demand (COD) removal from brewery wastewater. Raw wastewater samples were collected on a daily basis period 4 weeks. findings the study are reported based overall efficiencies recording 69% 54% total COD retention time (SRT) 7 days hydraulic 18 h at mesophilic temperature conditions ±25 °C. Moreover, SBR system showed stability orthophosphate SRT ranging 3 to with variation volumetric loading rate 1.14 4.83 kg COD/m3.day. anaerobic reaction experimentally found be aerobic phase lasting 14 h. demonstrated feasibility rate.