Recovering nutrients from human excreta and wastewater has been receiving increasing attention as a means to supplement or replace synthetic fertilizer production. Apart from technologies for nutrient recovery at centralized wastewater treatment plants, numerous decentralized, source‐separated sanitation systems, also known as new sanitation systems, have been developed to facilitate recovery. Decision‐making for the planning and implementation of new sanitation systems would benefit from a spatially explicit inventory of nutrient hotspots in urban areas. To provide visual representations of nutrient loads, we developed a methodology that combines spatial‐temporal modeling with geographic information system analysis, and used it for the city of Amsterdam. The methodology is new in the field of nutrient mapping, especially at the smallest geographical scale: building. Nitrogen, phosphorus, and potassium loads and hotspots are mapped at both building and neighborhood scale, drawing attention to the need for multiple scale analyses in decision‐making. This study concludes with a discussion on the potential to further develop the method proposed to include more detailed and verified data and to identify nutrient hotspots that are promising as nutrient recovery sites with new sanitation systems.

中文翻译：

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识别阿姆斯特丹的营养热点：在建筑物和社区范围内绘制人类排泄物的新方法

作为补充或替代合成肥料生产的一种手段，从人类排泄物和废水中回收营养物已受到越来越多的关注。除了用于集中式污水处理厂的养分回收技术外，还开发了许多分散的，按源头分隔的卫生系统，也称为新卫生系统，以促进回收。规划和实施新卫生系统的决策将受益于城市地区养分热点的空间明确清单。为了提供营养负荷的可视化表示，我们开发了一种将时空建模与地理信息系统分析相结合的方法，并将其用于阿姆斯特丹市。该方法在营养物测绘领域是新的，特别是在最小的地理范围内：建筑物。氮，磷，钾的负荷和热点都在建筑和邻里尺度上绘制，吸引人们注意决策中需要进行多尺度分析。这项研究最后讨论了进一步开发所提议的方法的潜力，该方法将包括更详细和经过验证的数据，并确定有希望通过新型卫生系统作为养分回收站的养分热点。