Potential of Burnt Oil Palm Shell (BOPS) Granules in Deep Bed Filtration

A study on the influence of effective size of Burnt Oil Palm Shell (BOPS) granular media in a rapid filtration process with respect to turbidity, filter run and flow rate was carried out at Sungai Langat Water Treatment Plant, Selangor, Malaysia. The finding of the study showed that effective sizes of less than 2.0 mm could produce effluent turbidity of less than 1 NTU, a limit recommended by WHO. Furthermore, it was noted that the filter run increased with higher effective sizes. Filter run was also affected by a change in the flow rate whereby a 50% increase in the flow rate resulted in the reduction of filter run by half, for the effective sizes studied.