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A comprehensive insight into the effects of microwave-H2O2 pretreatment on concentrated sewage sludge anaerobic digestion based on semi-continuous operation
Liu, Jibao; Yang, Min; Zhang, Junya; Zheng, Jiaxi; Xu, Hui; Wang, Yawei; Wei, Yuansong
2018-05-01
Source PublicationBIORESOURCE TECHNOLOGY
ISSN0960-8524
Volume256Pages:118-127
SubtypeArticle
AbstractThis study gave a comprehensive insight into the effects of microwave-H2O2 pretreatment on concentrated sludge anaerobic digestion (AD). Results showed that mixture of activated sludge and pretreated sludge at mass ratio of 1:1 was efficient for enhancing AD, methane production was increased from 215.51 mL/g VSadded to 258.38 mL/g VSadded. Pretreatment resulted in the change of sludge properties, such as solubilization of organic matters, decrease of viscosity. For concentrated sludge AD, the "pH buffer system" ensured the "inhibitory steady state" during start-up period, and significant archaeal community shift from Methanosaeta to Methanosarcina ensured the true steady-state operation. Pretreatment further increased the relative abundance of functional microbia such as Bacteroidales, Clostridiales and Methanosarcina, and resulted in the decrease of viscosity of digested sludge in reactors. Based on the CFD simulation, the flow velocity became greater than the control. These comprehensive effects might contribute to enhanced efficiency of concentrated sludge AD.
Department环境水质学国家重点实验室
KeywordConcentrated activated sludge Anaerobic digestion Microwave pretreatment Microbial community CFD simulation
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/41103
Collection环境水质学国家重点实验室
Recommended Citation
GB/T 7714
Liu, Jibao,Yang, Min,Zhang, Junya,et al. A comprehensive insight into the effects of microwave-H2O2 pretreatment on concentrated sewage sludge anaerobic digestion based on semi-continuous operation[J]. BIORESOURCE TECHNOLOGY,2018,256:118-127.
APA Liu, Jibao.,Yang, Min.,Zhang, Junya.,Zheng, Jiaxi.,Xu, Hui.,...&Wei, Yuansong.(2018).A comprehensive insight into the effects of microwave-H2O2 pretreatment on concentrated sewage sludge anaerobic digestion based on semi-continuous operation.BIORESOURCE TECHNOLOGY,256,118-127.
MLA Liu, Jibao,et al."A comprehensive insight into the effects of microwave-H2O2 pretreatment on concentrated sewage sludge anaerobic digestion based on semi-continuous operation".BIORESOURCE TECHNOLOGY 256(2018):118-127.
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