| Title |
Characteristics of MF/RO Membrane Permeability in the Separation and Accumulation of Liquid Livestock Fertilizer |
| Authors |
차기철 ( Gi Cheol Cha ) ; 황명구 ( Myoung Goo Hwang ) ; 정태영 ( Tae Young Jeong ) ; 정형근 ( Hyung Keun Chung ) ; 이영규 ( Young Kyu Rhee ) ; 태민호 ( Min Ho Tae ) ; 김동진 ( Dong Jin Kim ) |
| Abstract |
Lab scale MF/RO system was conducted to investigate the characteristics of permeability, liquid-solid separation, and accumulation-elimination of liquid fertilizer which produced from thermophilic aerobic oxidation(TAO) system. As a result of comparison of plate-sheet type with hollow fiber type MF membrane, the permeability of hollow fiber was higher (1.2∼6 times) than plate-sheet type. Tmax was decreased gradually which related to the total solid(TS) concentration in the raw liquid fertilizer. From the pure-flux test, it is observed that most of membrane fouling was recoverable, and the inital filtration resistance of plate-sheet type was lower than hollow fiber. Remarkable accumulation of compositions of liquid fertilizer by RO membrane was investigated, and compositions of fertilizer accumulated about 3-4 times as compared with original solution, Elimination rate of solute substance in the liquid indicated very stable, except the period at final operating due to the concentration poralization, Elimination rate was proportional to the increase of the trans-membrane pressure(TMP) in the RO reactor. |