|
DOI : 10.17640/KSWST.2015.23.4.69 , Vol.23, No.4, 69 ~ 77, 2015
|
| Title |
| Fouling Control in the MBR Process by Reducing the Organic Matter |
| 이한슬 Hanseul Lee , 김진수 Jinsu Kim , 심재훈 Jaehoon Shim , 강민구 Minkoo Kang , 김성근 Sungkeun Kim , 이상일 Sangill Lee |
|
|
|
| Abstract |
| The process which apply the Membrane bioreactors(MBRs) provide many advantages over conventional treatment so that process with MBR is being applied for industrial wastewater treatment. However, membrane fouling is main obstacle for application of MBRs because it reduces washing-cycle and productivity. The bio- fouling caused by EPS, NOM, pore size, HRT, etc. In this study, MLE(modified Ludzack-Ettinger) process with adding an aerobic reactor(M2) process operated to control bio-fouling feasibly in MBRs. As install an oxic unit in MLE, COD removal efficiency was more excellent than existing MLE process. Also, the total amount of extracellular polymeric substance(EPS) extracted from M2 reactor was lower concentration than M1. Controlling the EPS, M2 process washing cycle was longer than M1 about a week. It showed that, bio-fouling is influenced by the concentration of EPS and adding an oxic unit to MLE is very effective to control the bio-fouling. |
|
|
| Key Words |
| membrane bio-fouling, washing cycle, extracellular polymeric substance, modified Ludzack-Ettinger(MLE) process |
|
|
|
|
|
PDF