a study on the performance of limestone roughing filter - ePrints@USM
a study on the performance of limestone roughing filter - ePrints@USM
a study on the performance of limestone roughing filter - ePrints@USM
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3.5.6 Measurement <strong>of</strong> Dissolved Oxygen 53<br />
3.6 Measurement <strong>of</strong> Headloss 54<br />
CHAPTER 4 : RESULTS AND DISCUSSIONS<br />
4.0 Introducti<strong>on</strong> to Results and Discussi<strong>on</strong>s 55<br />
4.1 Effects <strong>of</strong> Filter Media Size and Flow Rate <strong>on</strong> Removal 55<br />
4.1.1 Turbidity Removal 55<br />
4.1.1.1 Effect <strong>of</strong> Filter Media Size <strong>on</strong> Turbidity Removal 55<br />
4.1.1.2 Effect <strong>of</strong> Flow Rate <strong>on</strong> Turbidity Removal 62<br />
4.1.2 Suspended Solids Removal 64<br />
4.1.2.1 Effect <strong>of</strong> Filter Media Size <strong>on</strong> Suspended Solids 65<br />
Removal<br />
4.1.2.2 Effect <strong>of</strong> Flow Rate <strong>on</strong> Suspended Solids Removal 72<br />
4.1.3 Biochemical Oxygen Demand Removal 73<br />
4.1.3.1 Effect <strong>of</strong> Filter Media Size <strong>on</strong> BOD Removal 73<br />
4.1.3.2 Effect <strong>of</strong> Flow Rate <strong>on</strong> BOD Removal 80<br />
4.1.4 Coliform Organisms Removal 81<br />
4.1.4.1 Effect <strong>of</strong> Filter Media Size <strong>on</strong> MPN Removal 81<br />
4.1.4.2 Effect <strong>of</strong> Flow Rate <strong>on</strong> MPN Removal 88<br />
4.1.5 pH Changes in Roughing Filtrati<strong>on</strong> 89<br />
4.1.6 Dissolved Oxygen Changes in Roughing Filtrati<strong>on</strong> 90<br />
4.2 Effect <strong>of</strong> Filter Run Time <strong>on</strong> Removal 91<br />
4.2.1 Effect <strong>of</strong> Filter Run Time <strong>on</strong> Removal Efficiency for small Size 91<br />
Media<br />
4.2.2 Effect <strong>of</strong> Filter Run Time <strong>on</strong> Removal Efficiency for Medium 95<br />
Size Media<br />
4.2.3 Effect <strong>of</strong> Filter Run Time <strong>on</strong> Removal Efficiency for Large Size 99<br />
Media<br />
4.2.4 Effect <strong>of</strong> Filter Run Time <strong>on</strong> Removal Efficiency for Combine 104<br />
Size Media<br />
4.2.5 Headloss and Filter Run Time 108<br />
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