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다단 방사형 섬유상 여재를 활용한 강우시 하수월류수 처리에 관한 연구
김희진 ( Heejin Kim ),심인태 ( Intae Shim ),김형준 ( Hyungjun Kim ),홍봉창 ( Bongchang Hong ),황태문 ( Tae-mun Hwang ) 한국수처리학회(구 한국수처리기술연구회) 2021 한국수처리학회지 Vol.29 No.1
A novel multi-fiber media filtration process was developed to treat pollutants in combined sewer overflow (CSO) effluents under a natural flow rate (12 m/hr). Most conventional CSO filtration processes operate in an upward flow, resulting in low filtration efficiency and high operating cost. In this multi-fiber filtration process, we used a horizontal filtration method with radial flow from the center of the multi-fiber medium. The fibers and filtration efficiencies were characterized using various techniques. The fibers exhibited a surface charge of -29.5 mV. The fibers’ filtration performance was evaluated under pilot-scale conditions (Q=22.5 ㎥/day) with mixed raw water amd final discharged water in an existing sewer treatment plant. In the pilot experiment, the average particle sizes for influent and effluent were 21.4 ㎛ and 4.45 ㎛, respectively, while the removal efficiency of BOD, COD, TOC, and SS was 82.9%, 77.9%, 50.1%, and 86.1%, respectively. These results are consistent with the sieving effects and electrostatic effects between fibers and pollutants. From these results, we can infer that this novel multi-fiber filtration process has the potential to treat CSO.