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The following filter bed designs are being considered for a water treatment plant: a) For each filter bed arrangement, compute the total clean bed head-loss across each filter for a filtration rate of 10m/h and a water temperature of 1C (use the Rose equation). Assume uniform average particle size in each layer. (12 points) b) Comment on the advantages of using dual or multimedia filters as compared to single medium filters. ( 2 points) The following filter bed designs are being considered for a water treatment plant: a) For each filter bed arrangement, compute the total clean bed head-loss across each filter for a filtration rate of 10m/h and a water temperature of 1C (use the Rose equation). Assume uniform average particle size in each layer. (12 points) b) Comment on the advantages of using dual or multimedia filters as compared to single medium filters. ( 2 points)