Stuttgart, 09.04.2025 – As part of the EU-funded research project FlashPhos the renowned Institute for Sanitary Engineering, Water Quality and Solid Waste Management (ISWA) organized a future-oriented workshop under the title:
“Sludge Drying for Phosphorus Recycling & Demonstration Event Dryer Grinder”.
The focus was on the energy-efficient drying of sewage sludge as a key technology for phosphorus recovery – a central topic for the future of circular economy in wastewater treatment.
Live demonstration: Next-generation grinding dryer technology
The highlight of the event was the demonstration of an innovative grinding dryer pilot plantwhich showed how sewage sludge can be dried in a resource-saving and at the same time valuable phosphorus can be recovered can be recovered.
Particular attention was paid to the SDS low temperature dryerwhich is characterized by minimal energy consumption, gentle sludge transport and avoidance of vapor formation convinced. The Live demonstration offered practical insights into the future sewage sludge treatment under real conditions.
Professional exchange at the highest level
The workshop brought together experts from industry, research, authorities and municipalities together. In a varied program consisting of specialist lectures, panel discussions and technology presentations current developments in sludge drying sludge drying and phosphorus recovery were highlighted.
The topics discussed included:
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Efficient drying systems for sewage sludge
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Innovations in the field of sewage sludge utilization
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Technologies for the recovery of elemental phosphorus (P₄)
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Contribution of sludge drying to CO₂ reduction
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Importance of resource-conserving processes for the sustainability and the circular economy
Target group: Experts from wastewater technology, environmental management and municipal facilities
The event was aimed at a broad specialist audience – from plant operators and environmental authorities up to municipal decision-makers, planning offices and waste management companies. The networking event not only offered up-to-date specialist knowledgebut also space for personal exchange and cooperation.
Conclusion: Milestone for sewage sludge treatment and phosphorus recovery
The workshop at ISWA Stuttgart impressively demonstrated how technological innovations and practical solutions to achieve the EU requirements for phosphorus recovery can contribute. The presented processes for sludge drying mark an important step in the direction of resource-efficient wastewater treatment.
We would like to thank all participants for their commitment and look forward to the next steps in the project FlashPhos!
