抄録
This study describes the solubilization of excess sludge by high speed rotary disk process. The excess sludge from final sedimentation tank in wastewater treatment plant was used in this study. The experiments of sludge through the high speed rotary disk were carried out. The results indicated that it was possible to improve the solubilization of excess sludge by this treatment process. Significant decrease of particle size after first time treatment was observed. With the increase of recycle time of treatment, the solubilization was obviously improved. It was suggested that the solubilization of microorganisms due to the function of hydrolase from broken microbial cell was promoted .
