The effect of solids-loading on head loss in slow sand filters. | [Journal of Engineering and Applied Sciences • 1992]

Author(s):

1. Fazal Khaliq: Civil Engineering Department, NWFP University of Engineering & Technology, Peshawar, Pakistan

2. Akhtar Naeem: Civil Engineering Department, NWFP University of Engineering & Technology, Peshawar, Pakistan

3. Amjad Ali: Civil Engineering Department, NWFP University of Engineering & Technology, Peshawar, Pakistan

Abstract:

The present study is an extension of the previous work in order to see the effect of solids-loading on the performance of slow sand filters in terms of the filter run length. The study has been conducted at laboratory scale model using local canal water. The model consisting of four slow sand filter units was operated in parallel. The influent water turbidity applied to the filter units was changed by presedimentation as well as by dilution. A constant solids loading of 8.4 gms/m2-hr was applied to each filter. The performance of the filters was measured in terms of the filter run length by the head loss criteria. It was found that both high influent suspend solids concentration and high rates of filtration had a pronounced effect on the filter run length rather than suspended solids removal as the filters clogged very rapidly. In other words the influent turbidity and rate of filtration appear to be more important than the solids loading in determining the filter run length.

Page(s): 29-31

DOI: DOI not available

Published: Journal: Journal of Engineering and Applied Sciences, Volume: 11, Issue: 1, Year: 1992

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