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Suspended solids within sewers: an experimental study

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Abstract

A precise determination of the pollutant loads processed through the sewer networks is required for legal, environmental and management reasons. Such a determination requires a good evaluation of concentrations, which is not an easy task because samplers or sensors can perform measurements in a cross-sectional area of only a few locations, and this local information must then be extrapolated across the whole cross-sectional area of the sewer network. This latter step is problematical. A great deal of attention must be given to suspended solids because they are prone to settle and display heterogeneous concentration patterns. A two-dimensional sampler has been designed to measure the variation of suspended solids concentration throughout a cross-sectional area. This paper presents the principles upon which the conception of this experimental device was based and the building process. Experimental results are presented and discussed.

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Abbreviations

C i :

Local suspended solid concentration (mg l−1)

C m :

Mean suspended solid concentration (mg l−1)

h :

Water level (m)

S m :

wetted area of the vertical cross-section (m2)

S i :

elementary area (m2)

V ms :

Manning Strickler velocity (m s−1)

References

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Authors and Affiliations

  1. Water and Environment Department, Laboratoire Central des Ponts et Chaussées, Route de Bouaye, BP 4129, 44341, Bouguenais Cedex, France

    Frédériqu Larrarte

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  1. Frédériqu Larrarte
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Correspondence to Frédériqu Larrarte.

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Larrarte, F. Suspended solids within sewers: an experimental study. Environ Fluid Mech 8, 249–261 (2008). https://doi.org/10.1007/s10652-008-9073-8

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  • DOI: https://doi.org/10.1007/s10652-008-9073-8

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