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Cost function for Grit Chamber

Cost Functions

The operation and maintenance of a Grit Chamber consists mainly of removing the sediments that are deposited at the bottom of the structure. In this sense, the main cost is associated with labor. Knowing this, for the construction of the cost function, it was considered that:

  • All sediments that are retained in a year by the breaking chamber (Wsed_CQ) are removed.
  • On average, the cost of the m3 of sediment removed by an operator is equal to $ 4.7 USD.
  • The density of the sediment to be removed is equal to 2.65 Ton / m3.

Starting from these two considerations, the dredging cost function is given by:

Función de costo para cámara de quiebre (1)

Bibliography

  1. Preliminary Cost Estimation Models for Construction, Operation, and Maintenance of Water Treatment Plants Jwala R. Sharma, Ph.D., M.ASCE; Mohammad Najafi, Ph.D., P.E., F.ASCE; and Syed R. Qasim, Ph.D., P.E., M.ASCE 2013

    Reliable cost estimation of construction, operation, and maintenance (O&M) of water treatment plants is essential for project planning and design. The authors have developed construction and O&M cost models for different unit operations and processes involved in water treatment plants. This paper presents the use of a single cost index to further update construction and O&M costs.

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