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박헌휘(Hun-Hwee Park) 호서대학교 공업기술연구소 2002 공업기술연구 논문집 Vol.21 No.1
In this study, solid-liquid separation of permeates from the final aerobic basin was performed using solid-liquid separation basin containing hollow fiber m em brane m odules(S L S B M ). The M L S S value of the final aerobic basin and the S L S B M w as about 5,500 m g /L in both cases. W hen the air flow was increased from 30 N m3/hr to 45 Nm 3 /hr, the water flux(£/m 2 • hr) w as increased 20% and the fouling of the m em brane was reduced. The water flux w as also measured at various operating conditions such as suction time, idle time and backw ashing time. W hen the backw ashing time was increased twice w ithout an idle time, the flux w as increased 20%. W hen the backw ashing time was increased twice w ith 10 or 20 sec. idle time, the flux w as increased 30%. T he experimental results indicated that suspended solids(SS) and turmdity were removed about 99%. In addition, the organic(CODMn) removal efficiency of SLSBM was 2 times higher than that of the conventional activated sludge process.
백민훈,한필수,박헌휘,Baik, M.H.,Hahn, P.S.,Park, H.H. Korean Nuclear Society 1995 Nuclear Engineering and Technology Vol.27 No.4
In this study, a transport model was developed in order to analyze and predict the transport behaviors of radionuclides mediated by pseudo-colloid in the fractured rock media. The effect of pseudo-colloid formation on the transport of a radionuclide was shown to be tory significant when an ap-parent pseudo-colloid formation constant, $A_{ap}$ (㎥/kg), os greater than 100. It was resulted from example calculations that the transport of Pu-239 was faster than Ni-63 because pseudo-colloid formation constant of Pu-239 was venter than that of Ni-63. Thus, it can be concluded that acceleration of radionuclide migration may be occurred because the pseudo-colloid formation of radionuclides increases the amount of mobile components in the solution and consequently decreases the amount of radionuclides adsorbed on the stationary solid medium.