Bioresource Technology 249 (2018) 962–968 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech Continuous liquid fermentation of pretreated waste activated sludge for high rate volatile fatty acids production and online nutrients recovery a a,b, c a a a,b Lihui Zhang , He Liu , Zhiyong Zheng , Huijun Ma , Meng Yang , Hongbo Liu Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 214122 Wuxi, PR China Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215011, PR China School of Biotechnology, Jiangnan University, 214122 Wuxi, PR China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: Raw sludge was pretreated, and the separated sludge liquid was used as substrate in a continuous operated up- Continuous liquid fermentation ﬂow anaerobic sludge blanket reactor to produce volatile fatty acids (VFAs). The highest VFA productivity of Nutrients recovery continuous fermentation with sludge liquid at an organic loading rate (OLR) of 10.0 kg COD/m /d was about High rate 5.0-fold and 4.0-fold higher than batch and semi-continuous fermentation with pretreated sludge slurry, re- Waste activated sludge spectively. Moreover, the liquid fermentation with an OLR of 10.0 kg COD/m /d consumed the
Bioresource Technology – Elsevier
Published: Feb 1, 2018
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