TREATMENT PROCESS AND INSTALLATION FOR SLUDGE FROM BIOLOGICAL WATER TREATMENT INSTALLATIONS

TREATMENT PROCESS AND INSTALLATION FOR SLUDGE FROM BIOLOGICAL WATER TREATMENT INSTALLATIONS

The invention provides a method for the treatment of excess sludge derived from at least one effluent biological purification treatment facility producing excess sludge, whereby said method comprises at least one solubilization stage (4) and at least one sludge digestion stage (5). Said method is ch...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CRETENOT, DIDIER, PATRIA, LUCIE, CHAUZY, JULIEN
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:The invention provides a method for the treatment of excess sludge derived from at least one effluent biological purification treatment facility producing excess sludge, whereby said method comprises at least one solubilization stage (4) and at least one sludge digestion stage (5). Said method is characterised in that it comprises at least one solubilized sludge liquid/solid separation stage (6), at the end of which the liquid fraction at least partially undergoes a digestion stage (5) before being directed upstream of said sludge biological treatment, whereas the solid fraction of said solubilized sludge is redirected to said solubilization stage (4).