Risk Analysis of Water Reuse for Industrial Cooling Water Consumptions
Publication: Journal of Environmental Engineering
Volume 145, Issue 10
Abstract
Limited qualified water resources have necessitated industries to use unconventional water resources such as wastewater. The aim of this study is to evaluate the risk of using urban treated wastewater to replace freshwater as a water source of cooling systems for industrial cooling water consumptions considering three main risks: corrosion, scaling, and biofouling. To perform this research, a risk analysis framework has been developed in three stages: identification of risks and the influential parameters, evaluation of the consequences of failure, and calculation of the probability of failure. The identified parameters were weighted using a paired comparison matrix, and the consequences of failure have been calculated using defined criteria. Questionnaires were used for scoring risks. In this research, the Isfahan Mobarakeh Steel Complex was chosen as the case study. The results of the risk assessment indicated that biofouling failure had the largest score. Furthermore, among the influential major failures, ammonium, phosphate, and chlorine, respectively, had the maximum risk. Based on the results, the developed framework can be used for ranking the risks of using urban treated wastewater instead of freshwater in industrial cooling systems.
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Published In
Journal of Environmental Engineering
Volume 145 • Issue 10 • October 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Jul 13, 2018
Accepted: Feb 27, 2019
Published online: Aug 10, 2019
Published in print: Oct 1, 2019
Discussion open until: Jan 10, 2020
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