세라믹 여재를 이용한 상향류식 여과시스템에 의한 부유물질 제거 (Effect of Ceramic Media in Upflow Filtration System on the Removal of Suspended Solids)

서지정보

· 발행기관 : 한국수처리학회
· 수록지 정보 : 한국수처리학회지 / 30권 / 3호 / 19 ~ 27페이지
· 저자명 : 조동회, 정영호, 안효민, 임병혁

초록

The purpose of this study is to derive the optimal conditions of the design factors of non-point pollution reduction facilities in upflow filtration systems. The physical characteristics of the ceramic media and their preparation were investigated, including measurement of the suspended solids removal efficiency and the associated headloss as well as the recovery period of the headloss, which was assessed by its reduction through backwashing when loading solids. The ceramic media used in the upflow filtration system had a particle diameter of 2 to 4 mm, a specific gravity of 0.633, a uniformity coefficient of 1.26, a porosity of 46.7%, and a permeability coefficient of 1.8 cm/sec. When the height of the filter media layer was 60 cm, the headloss of the filter media was 2.03 cm on average at no load. The assessment of this average accounted for three measurements of 30 minute intervals. The average removal efficiency of suspended solids was 82.9% when the suspended solids inflow concentrations were 150±10 mg/L, 250±10 mg/L, and 300±10 mg/L. Additionally the headloss of the filter media layer was 2.51 cm when the accumulated solids were loaded. Effective washing was achieved when the air washing and backwashing experiments were carried out for 5 minutes at an air flow rate of 5 m3/h and water washing at 4 m3/h, respectively.

영어초록

The purpose of this study is to derive the optimal conditions of the design factors of non-point pollution reduction facilities in upflow filtration systems. The physical characteristics of the ceramic media and their preparation were investigated, including measurement of the suspended solids removal efficiency and the associated headloss as well as the recovery period of the headloss, which was assessed by its reduction through backwashing when loading solids. The ceramic media used in the upflow filtration system had a particle diameter of 2 to 4 mm, a specific gravity of 0.633, a uniformity coefficient of 1.26, a porosity of 46.7%, and a permeability coefficient of 1.8 cm/sec. When the height of the filter media layer was 60 cm, the headloss of the filter media was 2.03 cm on average at no load. The assessment of this average accounted for three measurements of 30 minute intervals. The average removal efficiency of suspended solids was 82.9% when the suspended solids inflow concentrations were 150±10 mg/L, 250±10 mg/L, and 300±10 mg/L. Additionally the headloss of the filter media layer was 2.51 cm when the accumulated solids were loaded. Effective washing was achieved when the air washing and backwashing experiments were carried out for 5 minutes at an air flow rate of 5 m3/h and water washing at 4 m3/h, respectively.

참고자료

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