HWAHAK KONGHAK, Vol.19, No.2, 85-94, April, 1981
원추형 유동층 반응기에서 Pseudomonas Denitrificans를 이용한 탈질소 반응
Biological Denitrification by Pseudomonas Denitrificans in a Tapered Fluidized Bed Reactor
초록
원추형 유동층반응기에서 박테리아 Pseudomonas denitrificans（ATCC 13867）을 25/35 mesh의 활성탄에 부착시켜 생물학적 탈질소시키는 반응에 대하여 연구하였다. 탈질화 반응에서 최적 pH 및 온도는 7-8.5 및 25-35 ℃였으며 nitrate의 환원속도는 nitrate의 농도와 무관한 0차 반응이었다. 반응기 설계를 위한 수학적 모델은
S00.55 = -Kť+Si0.55
였으며, 여기에서
K=1.657（1-εα）(ρk)0.55D0.45γp-0.9
였다. 본 실험에는 K는 0.024의 값을 가졌다.
S00.55 = -Kť+Si0.55
였으며, 여기에서
K=1.657（1-εα）(ρk)0.55D0.45γp-0.9
였다. 본 실험에는 K는 0.024의 값을 가졌다.
A tapered fluidized bed reactor was employed for biological denitrification, in which a facultative and heterotrophic denitrifier Ps, denitrificans（ATCC 13867） adhering on 25/35 mesh activated carbon was used. It has been found that optimum pH was in 7-8.5, and optimum temperature in 25-35 ℃. The rate of nitrate reduction was almost constant irrespective of nitrate concentration and zero order. A mathematical model was developed for the design of reactor
S00.55 = -Kť+Si0.55
where
K=1.657（1-εα）(ρk)0.55D0.45γp-0.9
In the experiments, K value was 0.024.
S00.55 = -Kť+Si0.55
where
K=1.657（1-εα）(ρk)0.55D0.45γp-0.9
In the experiments, K value was 0.024.