Anaerobic wastewater treatment of concentrated sewage using a two-stage upflow anaerobic sludge blanket- anaerobic filter system

Maha M. Halalsheh; Zainab M. Abu Rumman; Jim A. Field

doi:10.1080/10934520903467824

Anaerobic wastewater treatment of concentrated sewage using a two-stage upflow anaerobic sludge blanket- anaerobic filter system

Maha M. Halalsheh, Zainab M. Abu Rumman, Jim A. Field

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

A two-stage pilot-scale upflow anaerobic sludge blanket - anaerobic filter (UASB-AF) reactors system treating concentrated domestic sewage was operated at 23°C and at hydraulic retention times (HRT) of 15 and 4 h, respectively. Excess sludge from the downstream AF stage was returned to the upstream UASB reactor. The aim was to obtain higher sludge retention time (SRT) in the UASB reactor for better methanization of suspended COD. The UASB-AF system removed 55% and 65% of the total COD (COD_tot) and suspended COD (COD _ss), respectively. The calculated SRT in the UASB reactor ranged from 20-35 days. The AF reactor removed the washed out sludge from the first stage reactor with average COD_ss removal efficiency of 55%. The volatile fatty acids concentration in the effluent of the AF was 39 mg COD/L compared with 78 mg COD/L measured for the influent. The slightly higher CODtot removal efficiency obtained in this study compared with a single stage UASB reactor was achieved at 17% reduction in the total volume.

Original language	English (US)
Pages (from-to)	383-388
Number of pages	6
Journal	Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume	45
Issue number	3
DOIs	https://doi.org/10.1080/10934520903467824
State	Published - Jan 2010

Keywords

Anaerobic filter
Concentrated sewage
Domestic wastewater
HRT
Two-stage system
UASB reactor

ASJC Scopus subject areas

Environmental Engineering

Access to Document

10.1080/10934520903467824

Cite this

Anaerobic wastewater treatment of concentrated sewage using a two-stage upflow anaerobic sludge blanket- anaerobic filter system. / Halalsheh, Maha M.; Abu Rumman, Zainab M.; Field, Jim A.
In: Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering, Vol. 45, No. 3, 01.2010, p. 383-388.

Research output: Contribution to journal › Article › peer-review

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abstract = "A two-stage pilot-scale upflow anaerobic sludge blanket - anaerobic filter (UASB-AF) reactors system treating concentrated domestic sewage was operated at 23°C and at hydraulic retention times (HRT) of 15 and 4 h, respectively. Excess sludge from the downstream AF stage was returned to the upstream UASB reactor. The aim was to obtain higher sludge retention time (SRT) in the UASB reactor for better methanization of suspended COD. The UASB-AF system removed 55% and 65% of the total COD (CODtot) and suspended COD (COD ss), respectively. The calculated SRT in the UASB reactor ranged from 20-35 days. The AF reactor removed the washed out sludge from the first stage reactor with average CODss removal efficiency of 55%. The volatile fatty acids concentration in the effluent of the AF was 39 mg COD/L compared with 78 mg COD/L measured for the influent. The slightly higher CODtot removal efficiency obtained in this study compared with a single stage UASB reactor was achieved at 17% reduction in the total volume.",

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note = "Funding Information: The authors would like to thank the International Arid Land Consortium (IALC) for the grant PO# Y432976 provided to run the research. The authors are also grateful to Water Authority of Jordan (WAJ) and Miyahuna Company for the permissions given for University of Jordan to have their experimental set up at Abu-Nusier Wastewater treatment plant.",

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Anaerobic wastewater treatment of concentrated sewage using a two-stage upflow anaerobic sludge blanket- anaerobic filter system

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