| Title |
Livestock wastewater treatment using Membrane Bioreactor(MBR) |
| Authors |
류장현 ( Lyu Jang Hyeon ) ; 강선홍 ( Kang Seon Hong ) |
| Keywords |
livestock wastewater; MBR; C/N ratio; UF; cross-flow |
| Abstract |
In this study, Anoxic/Oxic type MBR(Membrane Bioreactor) was applied to overcome a defect of conventional wastewater treatment and to treat wastewater stably. The flowrate of influent to plant used in this study is 200 cubic meter per day. The plant is located in public livestock treatment plant in C country. A goal of this study is to investigate organics, T-N, T-P and NH₄^(+)-N removal rates as C/N ratio changes when MBR combined with NO treats livestock wastewater. MLSS in aerobic reactor was maintained at about 7000 ㎎/L. Tubular Membrane process filtered by cross-flow in the membrane was used to treat livestock wastewater. Membrane (area : 0.5㎡ and velocity : 1.5-4 m/s) was made of polysulfone. Wastewater passed through anoxic reactor(l.064㎡) and aerobic reactor(3.352㎡) was transferred to drum screen to remove solid in there by pump, then, wastewater removed solids was continuously transferred to UF concentrator. The last process is membrane process. BOD, SCOD, T-N, T-P, NH₄^(+)-N, and SS removal rates are 99.9%, 79.5%, 98.3%, 54.9%, 99.6%, and 99.9%, respectively. As C/N ratio increased, T-N and NH₄^(+)-N removal rates increased directly, too. |