Energy and Water Management for Industrial Large-Scale Water Networks: A Systematic Simultaneous Optimization Approach

Abstract

Water and energy management issues in process industries are generally related to the synthesis of heat integrated water networks (HIWN), because water and energy are inextricably intertwined in process water networks. The aim of this study is to present a novel mathematical programming model for HIWN synthesis problems and develop an efficient solution strategy. This research is an extension of our previous work, where the targeting of heat integrated water-using networks (HIWUN) has been addressed. In this model, wastewater treatment units and multiple contaminants are embedded, and the total annual cost (TAC) is optimized rather than targeting a simplified TAC. What is more, a three-step solution strategy is proposed to guarantee obtaining promising solutions. The freshwater consumption, the relaxed TAC (rTAC), and the TAC are optimized successively. Good initial points for the rigorous HIWN model in the last step can be generated by the minimizing the rTAC. Four examples including two large-scale examples are illustrated to demonstrate the applicability of the proposed model and the efficiency of the solution strategy. The results indicate that the proposed model is suitable for the synthesis of HIWN, and more significantly, better results for large-scale problems are achieved.

Synthesis of Heat-Integrated Water Allocation Networks: A Meta-Analysis of Solution Strategies and Network Features

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Optimisation of Water-Energy Networks in Process Industry: Implementation of Non-Linear and Multi-Objective Models

“…The conceptualization of water-energy networks (WEN), also designated as Heat-Integrated Water Allocation Network (HIWAN) and Water Allocation and Heat Exchange Networks (WAHEN), through the application of the pinch methodology has been carried out by the development and implementation of several optimisation methodologies (including LP, MILP, NLP, MINLP and MOP) by several authors. These studies consistently present a focus on multiple contaminant problem-solving (Zheng et al, 2003;Ahmetović and Kravanja, 2013;Hong et al, 2018a), inclusion of multiple freshwater sources (Sahu and Bandyopadhyay, 2010;Hong et al, 2017;Hou et al, 2017;Hong et al, 2018a;Kermani et al, 2019;Souifi and Souissi, 2019), analysis of wastewater treatment units (Zhelev and Zheleva, 2002;Kermani et al, 2018;Dong et al, 2022), the inclusion of multiple utilities (Caballero et al, 2021) and largescale industrial systems (Zhao et al, 2019;How et al, 2021;Ibrić et al, 2021;Kamat and Bandyopadhyay, 2021). In addition, several authors approach the performance of the characterization of the research gaps regarding the application of Combined Water and Energy Integration models and its applicability within several industrial sectors (Budak Duhbacı et al, 2021;Chijin et al, 2021).…”

Flow regime identification in horizontal pneumatic conveying by nonintrusive acoustic emission detection

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