The effluent chemical oxygen demand (COD) and biochemical oxygen demand (BOD5) were determined according to the standard methods30 in a WTW CR 3000 thermoreactor and a WTW MPM 3000 photometer for COD while a WTW Inolab 740 was used to measure the dissolved oxygen for BOD5
The effluent chemical oxygen demand (COD) and biochemicaloxygen demand (BOD5) were determined according to thestandard methods30 in a WTW CR 3000 thermoreactor and aWTW MPM 3000 photometer for COD while a WTW Inolab740 was used to measure the dissolved oxygen for BOD5