Sustainability Analyses
BONUS RETURN uses a tailor-made approach of Sustainability Analysis to assess identified criteria that are key when decisions of large investments for complex situations, such as eco-technologies, are contemplated.

Sustainability Analysis has been applied for the choice of eco-innovative water and wastewater systems for new city districts such as Norra Djurgårdsstaden in Stockholm. It has also been used for long-term strategic decisions of wastewater and organic waste systems, for example in Gothenburg, and has been applied for the selection of peri-urban water and wastewater management in the coastal areas of Southern Sweden.

In BONUS RETURN, this approach will be used to assess the sustainability of eco-technologies previously identified through the Systematic Reviews and to shortlist innovative eco-technologies in the Nutrients and Carbon Reuse challenge. Sustainability alternatives are evaluated based on how well they meet the required value of the eco-technologies based on all the sustainability aspects and of national, regional and local objectives and policies.

The strength of the Sustainability Analysis is that it is based on all of the five sustainability criteria:

  • Health and hygiene
  • Choice of long term environmental issues
  • Economic issues
  • Socio-cultural issues
  • Technical function

The two main objectives of the Sustainability Analysis section of the project are:

  1. To evaluate sustainability aspects of eco-technologies selected in the Evidence-base of eco-technologies section, using a decision support-based framework for sustainability analysis for each of the catchment areas.

To be able to apply this, a step-by-step systems analysis approach will be carried out together with local stakeholders by:

  1. Defining system boundaries.
  2. Selecting criteria covering health and hygiene, environmental issues, economy, socio-cultural dimensions and technical functions.
  3. Selecting and formulating different system alternatives based on the review of eco-technologies from the Evidence-based review of eco-technologies.
  4. Comparing the different options using the criteria from step 2. The comparison will be done by using substance flow-, cost- effectiveness and cost benefit analysis, energy analysis and qualitative assessments.

2.   The second main objective is to identify upcoming innovations for reuse (TRL 5 or higher) from the Nutrients and Carbon Reuse Challenge, using the same sustainability criteria as above. The final results of this analysis provides a selection of interesting eco-technologies for further development in the section on Innovation for Eco-technologies.

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