摘要:Dairy plant wastewater are generally high strength waste containing soluble colloidal and suspended solids with high concentration of organics and therefore requires proper treatment prior to discharge. The objective of this study is to identify the condition of pH In the dairy wastewater. pH is an impor-tant parameter which, influenced the performance of the reactor. An experimental model was designed and conducted to study with respect to the interpretation of data. The reactor was allowed to operate at an OLR of 0.073 kg COD/m3.d with a HRT of 5.34 days attained COD removal was 83.75%.