Mattoso Ana Paula, Cunha Sandra, Aguiar José, Duarte António, Lemos Helena
CTAC-Centre for Territory, Environment and Construction, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal.
Águas do Norte, S.A., Dom Pedro de Castro, 5000-669 Vila Real, Portugal.
Materials (Basel). 2024 Apr 16;17(8):1824. doi: 10.3390/ma17081824.
To address the growing global water demand, it is imperative to implement advanced treatment systems and sustainable alternatives for managing the large amount of waste generated during the water purification process, known as water treatment sludge (WTS). Worldwide, researchers and companies are exploring alternatives and methods for the valorization of WTS as a raw material in other processes. It is urgent that all productive sectors, which contribute significantly to greenhouse gas emissions, adopt this management principle to ensure more sustainable production, contributing to the global goal of climate neutrality. Notably, in civil construction, incorporating WTS as a supplementary cementitious material (SCM) shows great promise, considering that the industrial waste currently used for this purpose is increasingly restricted. The use of WTS as a raw material in the cement industry not only contributes to the reduction of the carbon footprint, but also reduces the high waste load still disposed of in landfills. The emerging applications for WTP sludge are reviewed, with emphasis on its valorization in the civil construction as an SCM. The main characteristics of this waste and their impacts on the environment are also addressed.
为满足全球日益增长的用水需求，必须实施先进的处理系统和可持续的替代方案，以管理水净化过程中产生的大量废物，即水处理污泥（WTS）。在全球范围内，研究人员和企业正在探索将WTS作为其他过程中的原材料进行增值利用的替代方案和方法。所有对温室气体排放有重大贡献的生产部门迫切需要采用这种管理原则，以确保更可持续的生产，为全球气候中和目标做出贡献。值得注意的是，在民用建筑中，考虑到目前用于此目的的工业废物越来越受到限制，将WTS作为辅助胶凝材料（SCM）具有很大的前景。在水泥行业中使用WTS作为原材料不仅有助于减少碳足迹，还能减少仍倾倒在垃圾填埋场的高废物负荷。本文综述了WTP污泥的新兴应用，重点介绍了其在民用建筑中作为SCM的增值利用。还讨论了这种废物的主要特性及其对环境的影响。
