earticle

영어

A number of experiments were conducted in order to investigate the COD removal rate according to the biofilm thickness in a Fluidized-Bed Biofilm Reactor(FBBR). The following conditions were fixed during the experiments: superficial upflow velocity was 0.47cm/sec, operating temperature was 22±1℃ and pH was about 7±0.1. The synthetic wastewater based on glucose was used as a substrate. The COD removal efficiencies were shown as 73% and 95%, respectively, when organic loading rate was increased from 10kgCOD/m3.day to 80kgCOD/m3.day. Andrew's model of substrate removal rate which was commonly used in fixed-biofilm reactor was transformed and applied in this FBBR experiment to predict substrate removal rate and gave 85% agreement with the experimental values.

한국어

본 연구의 목적은 생물막 유동층 반응기내에서 높은 유기물 부하를 처리하는데 있어 지지체에 부착된 미생울의 특성과 유기물의 처리효율을 조사하는데 있다. 실험은 글루코오즈를 주 기질로 한 합성폐수를 이용하여, 상향유속은 0.47cm / sec, 체류시간을 5시간, 운전 온도는 22±1℃, pH는 7±0.1로 일정하게 하고 유기물 부하를 10kgCOD/m3.day에서 80kgCOD/m3.day로 증가시켰을 때, 각각 95%, 73%의 높은 COD 처리효율을 얻었다. 고정 생물막 반응기에 사용된 Andrew의 유기물 제거율 모델을 본 생물막 유동층 반응기에 적용시켜본 결과, 실제 유기물 제거율과 예측한 유기물 제거율은 85% 정도로 일치하였다