Treatment of cheese whey by a cross-flow anaerobic membrane bioreactor: Biological and filtration performance.

Autor: Dereli RK; Istanbul Technical University, Civil Engineering Faculty, Environmental Engineering Department, Maslak, 34469 Istanbul, Turkey; Delft University of Technology, Faculty of Civil Engineering and Geosciences, Department of Watermanagement, Sanitary Engineering Section, Stevinweg 1, 2628 CN Delft, the Netherlands. Electronic address: derelir@itu.edu.tr., van der Zee FP; Veolia Water Technologies, Biothane Systems International, Tanthofdreef 21, 2600 GB Delft, the Netherlands., Ozturk I; Istanbul Technical University, Civil Engineering Faculty, Environmental Engineering Department, Maslak, 34469 Istanbul, Turkey., van Lier JB; Delft University of Technology, Faculty of Civil Engineering and Geosciences, Department of Watermanagement, Sanitary Engineering Section, Stevinweg 1, 2628 CN Delft, the Netherlands.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2019 Jan; Vol. 168, pp. 109-117. Date of Electronic Publication: 2018 Sep 18.
DOI: 10.1016/j.envres.2018.09.021
Abstrakt: Whey, produced in large quantities during cheese production, is a rapidly fermentable high strength wastewater characterized by a high biodegradability and low alkalinity. In this study, a lab-scale cross-flow anaerobic membrane bioreactor was used to address the commonly experienced difficulties such as unstable reactor performance and unexpected biomass losses when treating whey wastewater with conventional anaerobic reactors. The anaerobic membrane bioreactor provided a stable treatment performance, i.e. more than 90% chemical oxygen demand removal, and moderate membrane fluxes between 8 and 11 L m -2 h -1 could be obtained, applying a low cross-flow velocity of about 0.5 m s -1 . Short term critical flux tests revealed that higher fluxes up to 36 L m -2 h -1 are possible at elevated cross-flow velocities and/or reduced mixed liquor suspended solids concentrations. Sludge filterability indicated by capillary suction time and specific resistance to filtration deteriorated throughout the study. Chemical cleaning efficiency gradually decreased, indicating irreversible membrane fouling during long term operation.
(Copyright © 2018 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: