Effects of Deposit Resuspension on Settling Basin

by Takeichiro Takamatsu, Prof.; Dept. of Chem. Engrg., Kyoto Univ., Yoshida-honmachi, Sakyo-ku, Kyoto, Japan,
Masaaki Naito, Asst. Prof.; Dept. of Sanitary Engrg., Kyoto Univ., Yoshida-honmachi, Sakyo-ku, Kyoto, Japan,
Sadataka Shiba, (A.M.ASCE), Res. Assoc.; Dept. of Chem. Engrg., Osaka Univ., Toyonaka, Osaka, Japan,
Yasuyo Ueda, Grad. Student; Kyoto Univ., Yoshida-honmachi, Sakyo-ku, Kyoto, Japan,

Serial Information: Journal of the Environmental Engineering Division, 1974, Vol. 100, Issue 4, Pg. 883-903

Document Type: Journal Paper

Discussion: Cordoba-Molina J. F. (See full record)


Scouring of deposits is one of the major factors in designing sedimentation basins for water and wastewater treatment systems. To express the degree of deposit resuspension a scouring parameter is introduced into a dispersion model. The parameter is taken into account in one of the boundary conditions of two-dimensional diffusion equation, which is simplified into a one-dimensional dispersion model. The scouring parameter is related to the longitudinal dispersion coefficient by a model experiment. On the basis of the mathematical expression developed, the existence of the optimum depth of a rectangular settling basin has been theoretically and has been experimentally verified.

Subject Headings: Settling basins | Scour | Mathematical models | Parameters (statistics) | Two-dimensional models | Sediment | Wastewater treatment | Basins

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