Cadmium과 고혈압 발생

다국어 초록 (Multilingual Abstract)

This paper discussed on the sruface area of disc and the amount of attached biomass by kinetics cinstant at each stage, for treating sewage with rotating biological contactor (RBC). The results are shown as follows;
1. It was found in all experiment that substrate removal could bo divided into two phase.
Over 60% of substratre was removed in the first phase.
The first phase consisted of the first stage. The remaining substrate removed in the second phase consisting of the second, third and fourth stages. Since the majority of the substrate was removed in the fitst stage and very little in the remaining stages, reducing the distance between the disc in the second phase was necessary for better efficiency in RBC design.
2. The determined saturation constant (㎏) and area capacity constant (p) for calculation of the surface area of disc were ; 69.0, 70.4 at first stage, 88.0, 74.6 at second stage and 137.0, 82.0 ar third and fourth stages, respectively.
3. Thickness of the attached biomass (film) was between 0.34mm and 3.3mm, and the percentages of contained water in the film was approximately 97%. It was also observed that the maximun value of the dry sludge index (DSI) was almost unchanged beyond the effluent concentration of 60㎎/ℓ.