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Updated: Dec 15, 2025

Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
Evaluation of environmental impacts for future influent scenarios using a model-based approach
S Andersson1, M Rahmberg1, Å Nilsson1
1IVL Swedish Environmental Research Institute, Stockholm, Sweden
Abstract:
Changes in dilution of wastewater to a treatment plant due to infiltration or surface runoff can have a great impact on treatment process performance. This paper presents a model-based approach in which realistic influent scenarios are generated and used as inputs to a dynamic plant-wide process model of the wastewater treatment plant. The simulated operation is subsequently evaluated using life-cycle assessment (LCA) to quantify the environmental impacts of the future influent scenarios. The results show that increased infiltration led to higher environmental impact per kg nitrogen removed. The increase in surface runoff had a minor impact.
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