Department of Water Management, Delft University of Technology, Stevinweg 1, Delft 2628 CN, The Netherlands.
Division of Natural and Applied Sciences, Duke Kunshan University, 8 Duke Avenue, Kunshan, Jiangsu 215316, China.
Environ Sci Technol. 2022 Jul 19;56(14):10289-10298. doi: 10.1021/acs.est.2c00353. Epub 2022 Jul 7.
Recovering phosphorus from wastewater in more concentrated forms has potential to sustainably recirculate phosphorus from cities to agriculture. The environmental sustainability of wastewater-based phosphorus recovery processes or wastewater-derived phosphorus products can be evaluated using life cycle assessment (LCA). Many LCA studies used a to account for the impacts of integrating phosphorus recovery processes at wastewater treatment plants, while some used a to assess the impacts of producing wastewater-derived phosphorus products. We demonstrated the application of an by assessing life cycle environmental impacts of substituting half of the conventional phosphorus rock-based fertilizers used in three crop production systems with wastewater-derived phosphorus products from six recovery pathways (RPs). The consequential LCA results show that the substitution reduces global warming potential, eutrophication potential, ecotoxicity potential, and acidification potential of the assessed crop production systems in most RPs and scenarios. The introduced in this study can (i) complement with the and the to give a more holistic picture of environmental impacts along the "circular economy value chains" of wastewater-based resource recovery, (ii) enable systemwide assessment of wide uptake of wastewater-derived products, and (iii) draw attention to understanding the long-term environmental impacts of using wastewater-derived products.
从废水中回收更浓缩形式的磷，有潜力将磷从城市可持续地再循环到农业中。可以使用生命周期评估 (LCA) 来评估基于废水的磷回收工艺或废水衍生磷产品的环境可持续性。许多 LCA 研究使用 来考虑在废水处理厂集成磷回收工艺的影响，而有些研究则使用 来评估生产废水衍生磷产品的影响。我们通过评估用来自六个回收途径 (RP) 的废水衍生磷产品替代三个作物生产系统中一半常规磷矿石基肥料的生命周期环境影响，展示了 的应用。 结果表明，在大多数 RP 和情景中，替代会降低所评估作物生产系统的全球变暖潜势、富营养化潜势、生态毒性潜势和酸化潜势。本研究中引入的 可以：(i) 补充 和 ，以更全面地了解沿基于废水的资源回收“循环经济价值链”的环境影响；(ii) 能够对废水衍生产品的广泛采用进行系统评估；(iii) 引起人们对了解使用废水衍生产品的长期环境影响的关注。
