The tool package serves for the preliminary assessment of the situation in small settlements and the estimation of the characteristics and quantities of the wastewater to be treated and, thus, for the determination of the design parameters for a future treatment plant. It consists of data collection tools and an Excel-based model.
The model is based on the ESRISS data baseline and a simplified material flow analysis (MFA) model. The tool allows to compare sanitation system scenarios, in the present as in the future, as well as estimate the nutrient content (nitrogen and phosphorus) in the perspective of an optimal wastewater and nutrient reuse. The user can thus anticipate the impact of different measures.