Process for drying and granulating sewage sludge

A process for drying and granulating sewage sludge. Wet sewage sludge is at least partially dried in a thermal drying zone, which preferably is a toroidal dryer. A plasticizer is added to the dried sludge and the resultant mixture is extruded to form fertilizer granules. An extrusion aid may also be...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MAFFET, VERE
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DRYING DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM HEATING LIGHTING MECHANICAL ENGINEERING WEAPONS
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A process for drying and granulating sewage sludge. Wet sewage sludge is at least partially dried in a thermal drying zone, which preferably is a toroidal dryer. A plasticizer is added to the dried sludge and the resultant mixture is extruded to form fertilizer granules. An extrusion aid may also be admixed with the dried sludge.