수처리에 이용되는 미생물과 이의 활성도에 관한 연구 = A Study on the Microorganisms found in Wastewater Treatment and Their Activities

다국어 초록 (Multilingual Abstract)

Bacterial distribution and composition in wastewater and their removing activities of LAS(linear alkyl sulfonate), starch, phosphorus and nitrogen were analysed with samples of influent raw water, 1st sedimentary basin, aeration tank and returning sludge in Daejon wastewater treatment factory, which were collected on 10th August, 1991.
The number of heterotrophic bacteria were ranged from 4.1 x 10^6 to 1.6 x 10^8 CFU/ml, of which phosphate accumulating bacteria occupied ND to 6.0 x 10^3 CFU/ml. Denitrifying bacteria were distributed from 1.0 x 10^5 to 3.6 x 10^6 CFU/ml.
The composition of bacterial community was almost same in all the samples. But Corynebacterium and Micrococcus were dominant genera as Gram positive bacteria and Enterobacter and Acinetobacter as Gram negative bacteria.
Denitryfying activity was appeared in Corynebacterium and Pseudomonas whose potential activity were 9.02ug-N_2/1/day and 2.02ug-N_2/1/day respectively. Phosphate accumulating activity was appeared in Corynebacterium. Enterobacter and Acinetobacter whose activity were so high as 76% to 87%, while LAS decomposing activity was appeared in Enterobacter, Pseudomonas and Alcaligenes and starch decomposing activity in Corynebacterium, Enterobacter and Micrococcus but their activities were comparatively low ranging from 7% to 25%.

목차 (Table of Contents)

• Ⅰ. 서 론
• Ⅱ. 재료 및 방법
• Ⅲ. 결과 및 고찰
• Ⅳ. 결 론