A slurry flowing at a rate of 8000 m3 /d is fed to a rectangular sedimentation tank to separate the sand particles (SG=2.65) from water (ρ=1000 kg/m3 , µ=1 cP). The critical settling velocity was chosen to be that of a particle with a diameter of 0.02 mm. Calculate the minimum detention time required (in h) and the dimensions of the tank (in m). Assume that the depth is 3.5 m and the L:W is 3:1.

Q: Constant head permeability tests were PENUI height of the two specimens (Ls1: Ls2) is 1.5, the ratio…

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Q: A falling head permeability test on a specimen of fine sand (Area = 12.5 cm², Length = 10 cm)…

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Q: A modified Proctor compaction test was carried out using a cylindrical mold with a 1000 ml volume.…

A: Wet densityρ=Wet massVolumeDry densityρd=ρ1+wZero AIr voidZAV DensityρZAV=ρwGS1+wGSExample:at…

Sediment transport

Sediment transport or Soil transport is the movement of solid particles, usually due to the combination of gravitational forces acting on the sediment, and the movement of the liquid at which the sediment enters. Soil erosion occurs in natural systems where the particles are sandstones (sand, rocks), mud, or clay; the liquid is air, water, or ice; and the gravitational force that works to move particles to the landing surface. Sediment transportation or soil migration due to the movement of liquids occurs in rivers, lakes, lakes, oceans, and other bodies of water as a result of currents and waves. Transportation is also caused by glaciers as they flow, and to places on earth under the influence of wind. Soil erosion due to gravity alone is possible in most sloping areas, including hills, scarves, cliffs, and the continental shelf — the continental boundary of the slope.