Physical Behavior of Flocculent Suspensions in Upflow

by James C. Brown, (M.ASCE), Assoc. Prof. of Sanitary Engrg.; Dept. of Envir. Sci. and Engrg., School of Public Health, Univ. of North Carolina, Chapel Hill, NC,
Enrique La Motta, Sanitary Engr.; Inst. of Ecuatoriano de Obras Sanitarias, Quito, Ecuador,

Serial Information: Journal of the Sanitary Engineering Division, 1971, Vol. 97, Issue 2, Pg. 209-224

Document Type: Journal Paper


The variation in concentration of flocculent particles in the sludge blanket of an upflow clarifier or reactor is a function of the upflow velocity of the liquid. The nature of this functional relationship for discrete particles has been determined by others. The experimental work of this investigation demonstrates that the same general type of relationship applies to flocculent particles. The results should prove useful in the further investigation of the behavior of upflow units as physical-chemical reactors.

Subject Headings: Particle velocity | Particles | Sludge | Clarifiers | Professional societies

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