| Title |
TDS Removal using Bio-sorption with AGS and High Concentration Nitrogen Removal |
| Authors |
엄한기 ( Han Ki Eom ) ; 최유현 ( Yoo Hyun Choi ) ; 주현종 ( Hyun Jong Joo ) |
| DOI |
https://doi.org/10.15681/KSWE.2016.32.3.303 |
| Keywords |
Aerobic Granular Sludge; Bio-sorption; Nitrogen; RO rejected water; TDS |
| Abstract |
This study aimed to assay the biological removal of TDS (total dissolved solids) from RO (reverse osmosis) rejected water. Following bio-sorption of TDS with AGS (aerobic granular sludge), the effects of TDS on biological nitrogen removal were examined. The bio-sorption of TDS after AGS treatment was confirmed by checking for TDS removal efficiency and surface analysis of microorganisms with SEM and EDS. Then, the effects of TDS on biological nitrogen removal and the denitrification efficiency were evaluated using the MBR reactor. According to the results, the bio-sorption of TDS with AGS was 0.1 mg TDS/mg AGS, and we confirmed that the microorganism surfaces had adsorbed the TDS. Biological nitrogen removal efficiency was measured at inhibiting denitrification at 4,000 mg/L of TDS-injected material. Based on this study, it is necessary to pretreat TDS-containing RO rejected water and to maintain TDS concentration lower than a specific value (≤4,000 mg/L), when considering biological nitrogen removal. |