Clean Technologies and Environmental Policy

, Volume 18, Issue 1, pp 339–346 | Cite as

An exact approach for the prioritization process of industrial influents in wastewater systems

  • M. Verdaguer
  • J. Suy
  • M. Villaret
  • N. Clara
  • M. Bofill
  • M. Poch
Brief Report

Abstract

In wastewater systems, the efficiency of the treatment process is strongly related to the composition of its influent. When the treatment is overloaded (in volume and/or pollutants), its efficiency decreases and the effluent cannot attain the quality required by the receiving waters. This work considers the problem of mixing multiple wastewater streams, with multiple contaminants, into a single stream (the influent) on which various specifications are imposed. The problem has recently been solved by probabilistic methods that can achieve a nearly optimal solution. In this paper, an exact technique is proposed to find the optimal solution with a mixed-integer linear programming solver for the first time. The procedure is applied to a case study with different industrial effluents whose discharges will compose the influent to a treatment plant with constrained capacity (both in volume and pollutant loads). The optimal utility solution achieved describes the discharges that satisfy all constraints. This proposal constitutes an efficient way to manage treatment influents while reducing the computational time required by two orders of magnitude compared to probabilistic methods.

Keywords

Wastewater management Industrial influents Wastewater systems Mixed-integer linear programming Exact methods 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • M. Verdaguer
    • 1
  • J. Suy
    • 2
  • M. Villaret
    • 2
  • N. Clara
    • 2
  • M. Bofill
    • 2
  • M. Poch
    • 1
  1. 1.Laboratory of Chemical and Environmental Engineering (LEQUIA), Institute of the EnvironmentUniversity of GironaGironaSpain
  2. 2.Department of Computer Science, Applied Mathematics and StatisticsUniversity of GironaGironaSpain

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