Abstract Summary
The wastewater chain in Amsterdam offers an opportunity to recover up to 100% of phosphorus (P) per year, versus 47% currently recovered. For water boards, like Waternet, it is difficult to scale-up centralized, decentralized, or hybrid P-recovery solutions. Because widely-used methods like Total Cost of Ownership, Mass Flow, and Life-Cycle Analysis are limited in providing a systemic assessment of risks and propagation among linked stakeholders e.g. municipalities, customers.
The Multi-Domain Mapping Model was applied to evaluate risks and opportunities propagated by four types of P-recovery technologies applied at different scales i.e. city, block, house, region; and to find an optimum scenario that fits the goals of Waternet and the city planners.
Change Propagation Indicator showed that centralized solution creates a system where Waternet is the Top-Absorber of risks/costs, and customers are Multipliers. Scenario with house-scale solution shifted risks from Waternet, indicating potential value models with other actors e.g. utilities, biotech startups, citizens, business. Scenario comparison allowed deriving system-wide patterns and change management strategies for identified actors. For each scenario we created a complementary overview of top-risks, opportunities, bottlenecks and improvements across infrastructure, as well as identified owners, and their pains & gains.
As an outcome, we developed a detailed (nexus) model of critical value chains in Amsterdam i.e. food, water, energy, etc.; and online software to analyze and link projects of other stakeholders into a single decision-support roadmap.
