alexa Effect of Hydraulic Retention Time on Anaerobic Digesti
E-ISSN: 2252-5211

International Journal of Waste Resources
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Research Article

Effect of Hydraulic Retention Time on Anaerobic Digestion of Xiao Jiahe Municipal Sludge

Odey Emmanuel Alepu1*, Zifu Li1, Harrison Odion Ikhumhen1, Loissi Kalakodio1 and Kaijun Wang2

1School of Civil and Environmental Engineering, Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing Xueyuan 30, Beijing 100083, PR China.

2State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, P.R. China.

*Corresponding Author:
Odey Emmanuel Alepu
School of Civil and Environmental Engineering
Beijing Key Laboratory of Resource-Oriented Treatment of Industrial Pollutants
University of Science and Technology Beijing Xueyuan 30
Beijing 100083, PR China
Tel: +8615652933203
E-mail: [email protected]

Received Date: June 18, 2016; Accepted Date: July 05, 2016; Published Date: July 12, 2016

Citation: Alepu OE, Li Z, Ikhumhen HO, Kalakodio L, Wang K (2016) Effect of Hydraulic Retention Time on Anaerobic Digestion of Xioa Jiaho Municipal Sludge. Int J Waste Resour 6:231. doi:10.4172/2252-5211.1000231

Copyright: © 2016 Alepu OE, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.



In this study, the research protocol was designed to examine the effect of hydraulic retention time (HRT) on the efficiency of the production of biogas from sewage concentrates recovered from coagulation and adsorption process from Xiao Jiahe municipal wastewater treatment plant and to report on its overall performance. Three complete-mix, continuous stirred tank reactor (CSTR) with working volume of 900 mL were used. The digesters were operated at different HRT of 10 d, 20 d and 30 d. Biogas produced had methane composition of 60-70% and biogas production rates of 18 mL/d in reactor 1, 169 mL/d in reactor 2 and 114 mL/d in reactor 3. Reactor 3 showed stable performance with the highest methane yield of 166 mL/gCOD. Reactor 1 recorded lowest methane yield of 10 mL/ gCOD. Due to high organic loading rate (OLR) and shorter HRT, the VS degradation and biogas yield in reactor 1 decreased. Based on the data from this study, 30 d HRT and OLR of 0.6 gCOD/(L.d) was suggested as the designed criteria for ideal methane production from CSTR anaerobic digestion AD of sewage sludge recovered from coagulation and adsorption process.


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