An oxidation pond having a surface area of 90 000 m2 is loaded with a waste flow of 500 m3/d containing 200 kg of BOD5. The pond has a depth of 1.2 m. Determine BOD5 loading rate (kg(Ha.d) Determine hydraulic retention time (d)

An oxidation pond having a surface area of 90 000 m2 is loaded with a waste flow of 500 m3/d containing 200 kg of BOD5. The pond has a depth of 1.2 m. Determine BOD5 loading rate (kg(Ha.d) Determine hydraulic retention time (d)

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter7: Seepage

Section: Chapter Questions

Problem 7.6P

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Concept explainers

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.

Question

An oxidation pond having a surface area of 90 000 m² is loaded with a waste flow of 500 m³/d containing 200 kg of BOD₅. The pond has a depth of 1.2 m.

Determine BOD₅ loading rate (kg(Ha.d)
Determine hydraulic retention time (d)

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