Assessment of environmental sustainability of drinking water treatments for arsenic removal

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL Resources Conservation and Recycling Pub Date : 2024-08-24 DOI:10.1016/j.resconrec.2024.107878

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Abstract

To date, few studies that developed a complete Life Cycle Assessment (LCA) are available in literature, but they are limited to non-conventional processes and did not take into consideration the entire drinking water treatment plant (DWTP). Moreover, few data of the environmental impact are currently available for some of the most widely applied technologies such as biological filtration and coagulation. This study aims to overcome this research gap carrying out a LCA in order to identify (i) what is the most impactful process, and (ii) what possible solutions for mitigating the impact can be proposed. Focusing on the treatment for arsenic removal, the results showed that coagulation was the most impactful process mainly due to the electricity consumption while, looking at the entire DWTP, disinfection prevails. In view of potential up-grade, the use of green energy can effectively increase the sustainability.

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评估饮用水除砷处理的环境可持续性

迄今为止，文献中关于完整生命周期评估（LCA）的研究很少，但这些研究仅限于非常规工艺，而且没有考虑到整个饮用水处理厂（DWTP）。此外，对于一些应用最广泛的技术，如生物过滤和混凝技术，目前几乎没有关于其环境影响的数据。本研究旨在克服这一研究空白，开展生命周期评估，以确定 (i) 哪些工艺对环境影响最大，以及 (ii) 可提出哪些减轻影响的可行解决方案。以除砷处理为重点，结果表明，混凝是影响最大的工艺，主要原因是耗电量大，而从整个污水处理厂来看，则以消毒为主。考虑到潜在的升级，使用绿色能源可有效提高可持续性。

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来源期刊

Resources Conservation and Recycling 环境科学-工程：环境

CiteScore

22.90

自引率

6.10%

发文量

625

审稿时长

23 days

期刊介绍： The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns. Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.