An integrated approach to the optimization of in-plant wastewater interception with mass and property constraints

This article addresses the problem of in-plant pollution prevention for processes with multiple streams, containing pollutants and environmentally undesirable properties through mass exchange networks (MEN). In-plant interception is used to adjust the concentrations and properties of the wastewater streams. A pinch-based disjunctive-optimization approach is adopted. The determination of the pinch point (being the most constrained thermodynamic and practical operating condition) is critical for determination of optimum design conditions. The selection of the appropriate mass separating agent(s) (MSAs) is based on thermodynamic and economic considerations. A screening procedure modeled through mathematical programming is developed with disjunctive constraints to screen alternatives and invoke the proper models when a certain technology is to be utilized. A case study is solved to illustrate the proposed approach.

[1]  Mahmoud M. El-Halwagi,et al.  Global optimization for the synthesis of property-based recycle and reuse networks including environmental constraints , 2010, Comput. Chem. Eng..

[2]  Mahmoud M. El-Halwagi,et al.  Synthesis of mass exchange networks , 1989 .

[3]  Mahmoud M. El-Halwagi,et al.  Pollution prevention through process integration , 1997 .

[4]  Mahmoud M. El-Halwagi,et al.  Automated targeting technique for concentration- and property-based total resource conservation network , 2010, Comput. Chem. Eng..

[5]  Mahmoud M. El-Halwagi,et al.  Pollution prevention targets through integrated design and operation , 2000 .

[6]  Patrick Linke,et al.  Apply Process Integration to Environmental Impact Assessment , 2009 .

[7]  Mahmoud M. El-Halwagi,et al.  Simultaneous synthesis of waste interception and material reuse networks: Problem reformulation for global optimization , 2005 .

[8]  Mahmoud M. El-Halwagi,et al.  Process integration technology review: background and applications in the chemical process industry , 2003 .

[9]  M. El‐Halwagi,et al.  Techno-Economic Feasibility and Flowsheet Synthesis of Scrap Tire/Plastic Waste Liquefaction , 1999 .

[10]  Mahmoud M. El-Halwagi,et al.  Targeting material reuse via property integration , 2005 .

[11]  Eva M. Lovelady,et al.  An integrated approach to the optimisation of water usage and discharge in pulp and paper plants , 2007 .

[12]  L. Schrage.  Optimization Modeling With LINDO , 1997 .

[13]  Mahmoud M. El-Halwagi,et al.  Global optimization of mass and property integration networks with in-plant property interceptors , 2009 .

[14]  Mahmoud M. El-Halwagi,et al.  Component-less design of recovery and allocation systems: a functionality-based clustering approach , 2000 .

[15]  Mahmoud M. El-Halwagi.  Process Integration, Volume 7 (Process Systems Engineering) (Process Systems Engineering) , 2006 .

[16]  V. Manousiouthakis,et al.  Automatic synthesis of mass-exchange networks with single-component targets , 1990 .