The effect of solids-loading on the performance of 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 in fact an extension of the previous work to elaborate further the performance of slow sand filters in terms of the removal of the suspended solids by the application of solids loading. A laboratory scale model consisting of four slow sand filter units was operated in parallel with a constant solids loading of 8. 4 gms/m2-hr to each filter. The raw water was obtained from the nearby canal. The filters could be operated only for a small period as they clogged rapidly. All the filters show similar behaviour in terms of effluent suspended solids. In other words a combination of high influent solids and low rate of filtration or high rate of filtration and low influent turbidity appear to result in similar effluent quality in terms of suspended solids. It is however important to note that filter run lengths were too short for a proper comparison of this nature.

Page(s): 23-27

DOI: DOI not available

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

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