| Title |
A Hybrid - process of Domestic Wastewater Treatment to Enhance Nutrient Removal Efficiencies |
| Authors |
전석준(Seok Jun Jeon),최명수(Myung Soo Choi),현경학(Kyoung Hak Hyun),윤여진(Yeo Jin Yoon) |
| Abstract |
A Hybrid process which consists of a bench-scale Upflow Anaerobic Fixed Bed Reactor(UAFBR) packed with iron media and Anoxic/Oxic(A/O) tank was tested to investigate the removal efficiencies of organic substances, nitrogen and phosphorus from domestic wastewater. Two types of systems were operated in parallel with different return sludge ratios and SRTs. One was the hybrid process and the other was the A/O process. In comparing the hybrid process with the A/O process with respect to phosphorus removal efficiency, the performance of the hybrid process was much better than that of the A/O process alone, because phosphate ions in wastewater were combined with iron cations from UAFBR. Nitrogen removal efficiency of the hybrid process was less than that of the A/O process alone. These results were originated from differences of influent COD concentrations, that is to say, influent COD/N ratio of the A/O process was greater than that of the hybrid process. |