A Risk Assessment Model for Water Reuse: Risks Related to Agricultural Irrigation in Brazil

作     者：Vidotti, Débora Beatriz Maia Soares, Paulo Fernando Lukiantchuki, Juliana Azoia Benatti, Cláudia Telles 

作者机构：Graduate Program in Urban Engineering State University of Maringá Maringa87020-900 Brazil Graduate Program in Civil Engineering State University of Maringá Maringa87020-900 Brazil Civil Engineering Department State University of Maringá Maringa87020-900 Brazil 

出 版 物：《SSRN》 

年 卷 期：2024年

核心收录：

主　　题：Risk analysis 

摘      要：Urbanization and industrialization are increasing extreme weather events, causing water quantity and quality reduction. Global water scarcity impacts 32.5% of the urban population and is growing. Brazil has also witnessed water scarcity, notably in the southeast (2014-2015) and south (2019-2020), with reservoirs dropping below 20% capacity. Water reuse is vital for mitigating scarcity, though it presents risks due to contaminants. Risk analysis studies are crucial for evaluating contamination sources, pathways, and exposure scenarios in water reuse practices. Various methodologies, including quantitative, semi-quantitative, and qualitative analyses, can be employed. Given the uncertainty and diverse factors, qualitative methods are recommended for non-potable water reuse risk analysis. This work presents a qualitative risk analysis methodology, focusing on agricultural reuse. It assesses factors affecting human health and the environment, considering exposure scenarios, receptors characteristics, and reuse water sources. By reviewing literature, the probability of occurrence and the magnitude of impact of the risk factors were identified, resulting in an overall risk value for comparing agricultural irrigation alternatives. This adaptable risk analysis model is mainly related to water treatment methods, prompting the proposal of risk control measures. © 2024, The Authors. All rights reserved.