| Title |
Wastewater Treatment by Submerged Filtration Bio - reactor using a Mesh as a Filter media |
| Authors |
정용준(Yong Jun Jung),민경석(Kyung Sok Min),남광현(Kyang Hyun Nam) |
| Abstract |
The filtration bio-reactor is a modified membrane bio-reactor in which a mesh was used as a filter media instead of a real membrane like MF or UF. In this system, solid-liquid separation was carried out by the sludge layer formed on the surface of the mesh, not by mesh itself. Mesh with pore size of 100㎍ was selected as the most adequate to filter media when reviewed that could get approximately 10㎎/L of SS in only 10 minutes later after filtration and able to form stable sludge layers regardless of MLSS concentrations. Besides, with the flux of 0.5 m/day and even at a very low pressure less than 1 kPa (10 ㎝ of head loss), this system was constantly operated without clogging. The wastewater treatment performance by the filtration bio-reactor was also examined on a laboratory scale. When the synthetic wastewater (BOD : 200 ㎎/L, T-N 50 ㎎/L, T-P : 8 ㎎/L) was fed to the reactor under following conditions : HRT of 4 hours, continuous feeding, continuous filtration, and continuous aeration, SS and BOD of the effluent were obtained less than 1.5 ㎎/L and 5.0 ㎎/L, respectively. Therefore, this system is fully suggested to be a useful one as an alternative wastewater treatment tool. |