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Phosphorrückgewinnung aus Nassschlamm - Eine Optionsanalyse im Kontext der Anforderungen der Klärschlammverordnung

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Abstract

This paper draws on theoretical assumptions and laboratory scale studies to identify constraints in processes that make recovering phosphorus from wet sludge appear a feasible pathway for creating regional value in the context of the requirements of the revised Sewage Sludge Ordinance. In particular, it examines the effects of different phosphorus inflow loads, varying levels of enhanced biological phosphorus removal and different phosphorus extraction grades by solid-liquid separation. Boundary conditions are derived and evaluated with regard to the provisions of the Sewage Sludge Ordinance. Removing phosphorus from wet sludge at municipal wastewater treatment plants can offer a different way to handle sewage sludge if the constraints are adhered to.

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