Express-Method for Determination of the Oxidizing Capacity of Activated Sludge and Its Biofilms in Pulp and Paper Mill

Water

Evgeniy Varakin¹  Vera Rudakova¹  Dmitry Chukhchin¹  Konstantin Terentyev¹  Ksenia Vashukova¹ 

[1] Department of Biology, Ecology and Biotechnology, Northern (Arctic) Federal University, Northern Dvina Embankment 17, 163002 Arkhangelsk, Russia;

关键词: dehydrogenase activity;    oxidizing capacity;    activated sludge;    biofilm;    biological wastewater treatment;   

DOI  :  10.3390/w13111553

来源: DOAJ

【 摘 要 】

Microbial dehydrogenase activity can help to determine the oxidizing capacity of activated sludge. Here we propose an innovative and automated express-method based on rapid determination of dehydrogenase activity. The measurement is based on the rate of methylene blue reduction by living microbial cells in suspension. A single analysis takes 10 min. The method was adapted for biofilms immobilized on the floating carriers of industrial bioreactors and the kinetics of biological oxidation by activated sludge and biofilms was compared. New parameters were proposed to characterize the biological oxidation under low oxygen levels. The obtained make it possible to quickly determine the dehydrogenase activity of activated sludge and biofilms and promptly monitor the effectiveness of industrial biological wastewater treatment.

【 授权许可】

Unknown