Bioresource Technology 249 (2018) 298–306 Contents lists available at ScienceDirect Bioresource Technology journal homepage: www.elsevier.com/locate/biortech Enhancement of sludge reduction by ultrasonic pretreatment and packing carriers in the anaerobic side-stream reactor: Performance, sludge characteristics and microbial community structure a a, b a a a Cheng Cheng , Zhen Zhou , Zhan Qiu , Jiyuan Yang , Wei Wu , Hongjian Pang College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China Shanghai Chentou Wastewater Treatment Co., Ltd, Shanghai 201203, China GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: Eﬀects of ultrasonic pretreatment and packing carriers on sludge reduction, settleability, dewaterability and Sludge reduction microbial community structure in the anaerobic side-stream reactor (ASSR) were investigated with three Anaerobic side-stream reactor anaerobic reactors operated in parallel. Ultrasonication from 3.65% in the ASSR to 5.08%, and packing carriers Carrier further enhanced the eﬃciency to 19.2%. Ultrasonic pretreatment of sludge decreased oxidation–reduction Ultrasonic potential in ASSR and enhanced the release of intracellular substances. The deterioration of sludge settleability Microbial community and dewaterability in the ASSR after ultrasonic pretreatment was improved by packing carriers. Illumina-MiSeq Dissolved organic matters sequencing showed that microbial richness and diversity increased after ultrasonic pretreatment and
Bioresource Technology – Elsevier
Published: Feb 1, 2018
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