초록

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Abstract ▼ AI-Helper

Tn order to be helpful to control dispersed microorganisms for stabLlization of wastewater treatment in a paper-makillg process, dominant strains were isolated aerobically and anaerobically. and identified and physiological characteristics were also analyzed. Pseudomonas carboxydohydrogena, Cardioba...

Tn order to be helpful to control dispersed microorganisms for stabLlization of wastewater treatment in a paper-makillg process, dominant strains were isolated aerobically and anaerobically. and identified and physiological characteristics were also analyzed. Pseudomonas carboxydohydrogena, Cardiobacten'm hominis, lvIicrococcus lylae, XanfomonCls campestris p" juglandis, Micrococcus diversus, and Comamonas terrigencl as aerobic dominants, and Streptococcus bovis and Prevotella buccae as anaerobIc dominants were identified fi'om the supernatent of the primary settling tank. It seemed that microflora in the treatment process would consist of many kinds of microorganisms, whose dominant would change easily according to environmental conditions, They all grew well at $37^{\circ}C$ and at different initial medium pH's. Especially, some of them required sulfate ion for their growth, which came from a chemical coagulant of aluminium sulfate in the primary settling tank. Interestingly. many anaerobes grew well even in the aerobic wastewater treatment process and seemed to have some functions. Population of anaerobes increased three times in the supematant of primary settling tank and ten times in Lhe bottom sludge of primary settling tank than in the prime wastewater. Therefore, these anaerobes contributed to the producH tion of offensive gases, which would make some microorganisms not precLpitate and be buoyant.

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