Modified Slow Sand Filtration Using Chanchaga river bed sand, Sandy Soil and Quarry Sand dust as filter Media

Abstract

Slow and filtration for the treatment of water was carried out using three different sand sources – Chanchaga River bed sand, sandy soil and quarry sand dust. The effect of varying bed thickness (8, 13 and 17 cm) and water flow rate through the sand beds for the different sand were tested and found to affect the purity of the filtrates. The characterization of the filtrates from the three sand sources and the various bed thicknesses showed that the result from all the sand bed filters analysed were within the acceptable limit of standard (except total coliform) for drinking water use as basis in this research. Quarry sand gave the best result in terms of water purification while sandy soil has the least performance in terms effectiveness of filtration.