BIOLOGICAL TREATMENT OF INDUSTRIAL ALKALINE STREAMS

The present invention relates to a process for the treatment of industrial alkaline streams comprising sulfide and carbonate, comprising the steps of:a) providing an industrial alkaline stream comprising sulfide and carbonate;b) supplying the industrial alkaline stream to a bioreactor comprising sul...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Kotilainen, Ari, Timonen, Olli, Wadsborn, Rickard, Björk, Maria, Noordink, Michel Paulus Maria, van Zessen, Erik
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY METALLURGY TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The present invention relates to a process for the treatment of industrial alkaline streams comprising sulfide and carbonate, comprising the steps of:a) providing an industrial alkaline stream comprising sulfide and carbonate;b) supplying the industrial alkaline stream to a bioreactor comprising sulfide oxidizing bacteria and removing sulfide from the industrial alkaline stream by subjecting said stream to sulfide oxidizing bacteria in the presence of oxygen, and supplying a pH adjustment agent to the bioreactor to maintain a pH in the range in the range 8 to 11, to oxidize the sulfide to elemental sulfur,c) withdrawing from the bioreactor a treated industrial alkaline stream comprising elemental sulfur,wherein a portion of the sulfide oxidizing bacteria is removed from the bioreactor and mixed with the industrial alkaline stream prior to supplying the industrial alkaline stream to the bioreactor in step b).