그물 형태의 폴리프로필렌 여재를 충전한 고정생물막 반응기에서의 유기물 처리 및 유출수 농도 예측

Treatment and Prediction of Effluent Concentration Using Fixed-Bed Biofilm Reactor Packed Polypropylene Media of a Net Form

The objective of this study was to examine performance of the support media made of polypropylene in an fixed bed biofilm reactor for the treatment of synthetic sewage. After 18 h of seeding, biomass was attached on the surface of support media. Bioflm was formed within 2~3 days, but stable biofilm was abtained about 20 days. When organic loading rate was increased from 61.4 g BOD_5/㎡day to 102.9 g BOD_5/㎡day, the effluent BOD_5 and the biomass concentration was increased from 5.7 mg/ℓ to 9.7 mg/ℓ and from 50.1 g biomass/㎡ to 98.7 g biomass/㎡, respectively. At steady state effluent suspended solid was maintained below 2 mg/ℓ. The surface area of support media for desire effluent for a given conditions was expressed as a model equation below. 수식(원문참조) Prediction of the effluent BOD_5 values by using the mathematical model well agreed to the measured values.