关键词: 斜窄上升流, 澄清—浓密箱斗, 粘泥结垢, 斜板间堵塞

Abstract: Based on observing and on-site surveying of clarifier-thickener cones with “tilting slender up-flowing (TSU)” over years, main laws of settling and sliding of solid particles on bottom plate in TSU are found out after long time R & D. In TSU's settling zone, large or heavy particles settle down at first, and smallest or lightest ones settle in top zone of the tilting plate surface. The pre-condition of settlement continuously sliding down on this surface with inclination at α is sliding component of its gravity forces greater than surface resistance. The surface resistance value is minimized by means of optimized plate material, design and manufacture, and its self-sliding occurs and persists when its cumulate thickness, mass and gravity force achieved a certain value. The essential reason for the silted channel between plates lies in overloaded sediment in the cones. 

Key words: Tilting slender up-flowing, Clarifier-thickener cones, Dirt scale, Silted channel between tilting plates