VERFAHREN ZUM STEUERN EINES ANAEROBEN PROZESSES

VERFAHREN ZUM STEUERN EINES ANAEROBEN PROZESSES

The invention relates to a method of controlling a hydrolysis step at an anaerobic treatment process for treating wastewater from the manufacture of peroxide bleached mechanical or chemi-mechanical pulp. The method is carried out in that the redox potential of outgoing water from the hydrolysis step...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WELANDER, THOMAS GUNNAR, ANDERSSON, PER-ERIK, MOLIN, NILS LUDVIG, HANSSON, BENGT GOERAN, ANNERGREN, GOERAN ERIK
Format: Patent
Sprache:eng ; ger
Schlagworte:
APPARATUS THEREFOR
CHEMISTRY
METALLURGY
PAPER-MAKING
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
REGENERATION OF PULPING LIQUORS
TEXTILES
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:The invention relates to a method of controlling a hydrolysis step at an anaerobic treatment process for treating wastewater from the manufacture of peroxide bleached mechanical or chemi-mechanical pulp. The method is carried out in that the redox potential of outgoing water from the hydrolysis step continuously is measured and controlled in that ingoing water to the hydrolysis step at demand is directed past the hydrolysis step and to a subsequent aerobic step.