Pipeline Merging Considerations for the Synthesis and Design of Interplant Water Networks with Wastewater Treatment, Regeneration and Reuse
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2015 Elsevier B.V. The development of effective wastewater regeneration and reuse networks has been a prominent research focus, in response to the growing demand for freshwater use by the industrial sector. Moreover, many industrial cities are recognizing the benefits of reducing freshwater utilization, and wastewater discharge, by promoting effective wastewater treatment. Much of the research attention so far has primarily involved identifying optimal wastewater treatment and reuse strategies, in which several wastewater-producing operations are matched with a number of water-consuming operations, and/or assigned to undergo a series of treatment steps before reuse, if necessary. Moreover, a single pipeline is designated for every viable water allocation identified. This has been consistently observed in many of the previous research contributions that involve interplant water network synthesis. In an attempt to enhance the water network design process, several representations that account for a number of pipeline merging scenarios have been investigated for wastewater reuse networks. In addition to the improved design-screening ability of less complex pipeline networks, merging together common pipe segments that carry similar water qualities have been found to allow for various cost-enhancements in the designs obtained.