What is the largest size of a spherical sand grain that the Stokes’ Law can be used to calculate its settling velocity. What is the terminal settling velocity for the sand in quiescent water? If you want to use a settling basin (with 3 m in depth) to achieve 100% removal for all sand grains of this size in the water, what are the required size (area and volume) of the basin for treating Q=10000 m3/hr. Assuming water temperature is at ~20 0C and the density of sand is 2650 kg/m3.

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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.