Performance of intermittently aerated up-flow sludge bed reactor and sequencing batch reactor treating industrial estate wastewater: A comparative study

► Performance of an USBR and a SBR bioreactor removing CNP was compared. ► The effects of HRT and aeration time on the systems performance were investigated. ► Removal of nitrogenous and carbonaceous components was studied. ► The optimum conditions for two feeding regimes were determined.