Staufener Bucht

Compact system design with furnace integrated into the boiler saves valuable space for the waste processor

Low Nox exhaust gas values thanks to controlled combustion chamber temperature control, staged combustion and locally adapted asphyxiation system

Local waste recycling reduces transportation and reduces the footprint of waste incineration.

No costs for CO2 certificates and reliable compliance with emission values in accordance with the 17th BImSchV and the BAT Directive.

By adding the P-XTRACT process, the plant availability of phosphorus can be maintained and a higher separation of pollutants can be achieved. This favours the popularity of phosphorus ash among fertilizer producers.

The phosphorus recovered from the sewage sludge ash can be processed and used regionally as fertilizer. It has a high plant availability resulting from fuel conditioning, additive addition and combustion management. Thanks to the clever combination of processes, P-XTRACT satisfies a considerable proportion of the long-term phosphorus requirement.

The admixture of additives produces volatile heavy metal compounds in the ash, which pass into the gas phase due to the high process temperatures. The ash is then separated in the hot gas cyclone at over 700 °C so that heavy metal compounds cannot precipitate again. The volatile heavy metals are safely removed in the downstream flue gas cleaning system.

The reduction in disposal costs is achieved on the one hand by minimizing the amount of waste to be landfilled and on the other hand by producing a saleable recyclable material that can be recovered from incineration. The prerequisite for this is that the recovered recyclable material is accepted by potential fertilizer manufacturers, or that legal changes to the Fertilizer Ordinance increase the acceptance of the generated recyclable material.

The local recycling approach minimizes emissions and the traffic load caused by sewage sludge transport in relation to the overall performance of the plant technology. The simple, local processing option promotes a regional fertilizer production concept.

The production and further processing of the ashes into a direct phosphorus fertilizer requires fewer process steps compared to other methods such as acid digestion, and therefore less use of chemicals and energy.