TITLE

COMPARISON BETWEEN EFFICIENCY OF RECTANGULAR SEDIMENTATION TANKS USING SINGLE AND SERIES WEIRS IN THEIR INLET ZONE

AUTHOR(S)
Mehmanravesh, Samira; Khezri, Seyed Mustafa; Gharehbagh, Vahid Mohammadzadeh
PUB. DATE
November 2011
SOURCE
International Journal of Academic Research;Nov2011, Vol. 3 Issue 6, p355
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Sedimentation tanks are one of the main and costly units of a treatment plant which is responsible to separation of part of suspended particles in water. An optimal design for these tanks improves their performance remarkably. Therefore, any factor influencing their performance worth being considered. Here in this research, we study the influence of shape and type of the inlet weir on efficiency of the particle removal using a pilot of 1⁄20 scale in three different flows. For this purpose, six different weirs-single and series- were created in triangular, rectangular and trapezoidal forms with the same water cross-section. The results of the experiments indicate that the performance of series weirs is better than that of single weirs which leads to evenly distribution of water in the tank. Further, triangular weir in low flow and rectangular weir in high flow can remove more suspended solids in comparison to other types of weirs.
ACCESSION #
80232527

 

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