| Title |
A study on the Organic and Phosphorus Removal of Domestic Sewage using submersed Hollow Fiber Microfiltration Membrane and Alum added into Activated Sludge Reactor ( Alum-MBR System ) |
| Authors |
박재로(Jae Roh Park),김응호(Eoung Ho Kim) |
| Abstract |
The objective of this research is to show whether Alum-MBR (Membrane Bio-Reactor) system is a technically feasible and economically competitive process for organic and phosphorus removal of municipal sewage. In Alum-MBR system, organic material and phosphorus are removed by biological, chemical reaction and membrane separation mechanism. The advantages of Alum-MBR system were listed as high treability, easy maintanance and automatic operation. Membrane used in this system was polyethylene hollow fiber microfiltration which surface treated hydrophilic with a pore size of 0.1㎛ and surface area of 4㎡ and two module was immersed to aeration basin of 0.4㎥. Jar test was conducted to find out weather chemicals are suitable for phosphorus removal and optimal dosage rate of chemicals and back-up test in a small-scale pilot plant was conducted to confirm of removal effect of organic material and phosphorus. The operation conditions of Alum-MBR system were fixed at suction-idle time of l0min-5min, permeation flux of 0.015㎥/㎡/hr, aeration intensity of 300ℓ/㎥/min. As the result of dosing Alum into MBR, flux was stable and permeate pressure was bring down remarkably. T-P concentration of permeated water always lower than target water quality of l㎎/ℓ. |