System and method for the renovation of process water

Details System and method for the renovation of process water System and method for the renovation of process water

C - Chemistry, Metallurgy

02

F

C02F 3/28 (2006.01)

Patent

CA 2634796

Disclosed is a system for renovating process water, especially during the production of paper. Said system comprises at least one process water renovation unit, at least one of which is provided with an anaerobic reactor spiked with anaerobic microorganisms as well as a lime elimination unit. Also disclosed is a method for renovating process water, particularly during the production of paper, which encompasses at least one process water renovation step in which at least some of the process water continuously delivered to the process water renovation step is subjected to a purification step in an anaerobic reactor that is spiked with anaerobic microorganisms and to a deliming step.

Installation de traitement d'eau de fabrication, en particulier de traitement d'eau de fabrication lors de la fabrication du papier, qui comporte au moins une unité de traitement d'eau de fabrication, au moins une des unités de traitement d'eau de fabrication comprenant un réacteur anaérobie contenant des micro-organismes anaérobies et une unité d'élimination du calcaire. La présente invention concerne en outre un procédé de traitement d'eau de fabrication, en particulier de traitement d'eau de fabrication lors de la fabrication du papier, comportant au moins une étape de traitement d'eau de fabrication lors de laquelle au moins une partie de l'eau de fabrication introduite en continu dans l'étape de traitement est soumise à une étape de purification dans un réacteur anaérobie contenant des micro-organismes anaérobies ainsi qu'à une étape d'élimination du calcaire.

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