Author(s): Noor Amiza Ab Aziz, Mohamad Fared Murshed, Mohd Nordin Adlan
Linked Author(s): MOHAMAD FARED MURSHED
Keywords: Riverbed filtration, physical model, turbidity, colour, suspended solids.
Abstract: Although rarely studied, riverbed filtration (RBeF) is one of the best methods for establishing water supply systems in developing countries. Riverbed filtration acts as a pre-treatment system at the water treatment plant. Hence, RBeF must be studied extensively for the sake of its many benefits in terms of water production. The development of a physical model of riverbed filtration (RBeF) system in the laboratory is one of the studies that can be done in order to determine the efficiency of this system. Thus, a series of physical model experiments in a 0. 81 m3 sandbox were conducted to evaluate the performance of a riverbed filtration system before it can be applied at the site. In this study, the performance of the proposed riverbed filtration (RBeF) model to remove turbidity, colour and suspended solids from water sample was determined. The percentage removal was determined with three different parameters: flowrate, concentration of contaminants and depth of filter media. Laboratory results show that the percentage removal of turbidity is between 62. 6% and 93. 9%. For the percentage removal of colour, it is between 24. 3% and 87. 4%. Lastly, for the percentage removal of suspended solids, it is between 70. 6% and 97. 4%. The results also show that the depth of the filter media plays an important role and influenced the percentage removal of these three studied parameters. The higher the depth of filter media used, the higher the percentage removal of turbidity, colour and suspended solids. This riverbed filtration (RBeF) has a good potential for further research and future application
Year: 2017