Nitrogen and Phosphorus Removal in Synthetic Domestic Wastewater Using SBBR Technology

Biological nitrogen phosphorus removal by the use of Sequencing Batch Biofilm Reactor (SBBR) is today an accepted and well proven technology. The objective of this study was to evaluate the performances of nitrogen and phosphorus removal in this laboratory-scale SBBR in treating synthetic domestic wastewater. The system was designed to handle at C/N ratio changing from 10:1, 5:1 to 3.3:1. The results were shown the average removal efficiencies of total phosphorus (TP) in this system were remarkable (>94.0%), however, the average removal efficiencies of total nitrogen (TN) reached 87.2%, 65.4%, 46.1% respectively as C/N ratio changing from 10:1, 5:1 to 3.3:1. Therefore we could reach a conclusion that the SBBR have the remarkable performance at the C/N ratios of 10:1 and 5:1, and the system is suitable to treat domestic or municipal wastewater.