Cost function for Grit Chamber:

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:


Bibliography

Preliminary Cost Estimation Models for Construction, Operation, and Maintenance of Water Treatment Plants. 2013. 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. | https://ascelibrary.org/doi/abs/10.1061/%28ASCE%29IS.1943-555X.0000155

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