3. We are about to design one treatment train composed of a flocculation basin directly connected to a rectangular sedim

[answerhappygod]

3 We Are About To Design One Treatment Train Composed Of A Flocculation Basin Directly Connected To A Rectangular Sedim 1 (31.66 KiB) Viewed 19 times

3. We are about to design one treatment train composed of a flocculation basin directly connected to a rectangular sedimentation basin for alum drinking water treatment plant. The flocculation basin is a square basin and has four stages in the same size separated by baffle with tapering mixing intensity at 60 s', 40 , 20 s', and finally 10 s'. The depth of the flocculation basin is 3 m and the mean hydraulic retention time for the entire flocculation basin is 60 minutes. The alum-flocculated water is then directly subjected to the adjacent sedimentation basin that has the same depth and width as the flocculation basin. The alum-laden influent water flowrate is 15,000 m/d and water temperature is 12 "C. 1) Determine the dimensions of the four stages of the flocculation basins. 2) Determine the average G times detention time product (the "Gr" Camp parameter) for the overall flocculation process and compare to the Camp criterion. 3) Determine the power input required for each stage with the flocculation basins? 4) Determine the length of the rectangular sedimentation basin if the targeted overflow rate is 30 m/d. Also, determine how much the fluid velocity is faster than the solids settling velocity in this sedimentation basin. - can