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Flowrate targeting for threshold problems and plant-wide integration for water network synthesis

Authors
Journal
Journal of Environmental Management
0301-4797
Publisher
Elsevier
Publication Date
Volume
88
Issue
2
Identifiers
DOI: 10.1016/j.jenvman.2007.02.007
Keywords
  • Process Integration
  • Process Synthesis
  • Water Minimisation
  • Threshold Problems
  • Targeting
  • Plant-Wide Integration
Disciplines
  • Ecology
  • Geography

Abstract

Abstract Water reuse/recycle has gained much attention in recent years for environmental sustainability reasons, as well as the rising costs of fresh water and effluent treatment. Process integration techniques for the synthesis of water network have been widely accepted as a promising tool to reduce fresh water and wastewater flowrates via in-plant water reuse/recycle. To date, the focus in this area has been on water network synthesis problems, with little attention dedicated to the rare but realistic cases of so-called threshold problems. In this work, targeting for threshold problems in a water network is addressed using the recently developed numerical tool of water cascade analysis (WCA). Targeting for plant-wide integration is then addressed. By sending water sources across different geographical zones in plant-wide integration, the overall fresh water and wastewater flowrates are reduced simultaneously.

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