Treatment of strong domestic sewage in a 96 m UASB reactor operated at ambient temperatures: two-stage versus single-stage reactor

Halalsheh, Maha; Sawajneh, Z.; Zubi, Mohammad Al; Zeeman, G.; Lier, J.B. van; Fayyad, Manar; Lettinga, G.

doi:10.1016/j.biortech.2004.06.014

Cited by 61 publications

(32 citation statements)

References 8 publications

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“…Con el uso de estos reactores se han reportado eficiencias de remoción de demanda química de oxígeno (DQO) y de sólidos suspendidos totales (SST) superiores al 60 % y 50 %, respectivamente (Elmitwalli et al 2003, Halalsheh et al 2005, Das y Chaudhari 2009. Sin embargo, los efluentes suelen requerir postratamiento para mejorar su calidad, lo que puede ser visto como una desventaja del proceso de tratamiento anaerobio.…”

Section: Introductionunclassified

Tratamiento De Agua Residual Doméstica Mediante Un Reactor Rafa Y Una Celda Microbiana De Combustible

Martínez-Santacruz

Herrera-López

Gutiérrez-Hernández

et al. 2016

Rev. Int. Contam. Ambie.

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Palabras clave: digestión anaerobia, remoción de materia orgánica, sistema acoplado, densidad de potencia, eficiencia coulómbica RESUMENSe evaluó el desempeño de un sistema compuesto por un reactor anaerobio de flujo ascendente (RAFA) y una celda microbiana de combustible (CMC) en el tratamiento de agua residual de baja carga, así como la recuperación de energía de este sistema. El reactor RAFA (1 L) se alimentó de manera continua con agua residual domés-tica bajo tiempos de retención hidráulica (TRH) de 12 y 6 h. La CMC (250 mL) fue operada por lotes y alimentada con agua residual cruda (TRH = 12 h) o con el efluente del reactor RAFA (TRH = 6 h). Se encontró que la remoción de materia orgánica en el sistema acoplado RAFA-CMC (88 % en demanda química de oxígeno (DQO), 75 % de carbono orgánico total (COT) y 79 % de sólidos suspendidos totales (SST)) fue superior a los niveles observados en el reactor RAFA (76 % DQO, 66 % COT y 73 % SST) y en la CMC (60 % DQO, 53 % COT y 40 % SST) cuando estos fueron operados de manera individual. La mayor densidad de potencia obtenida con la CMC fue de 176 mW/m 2 , utilizando una resistencia de 1000 Ω, en tanto que la eficiencia coulómbica fue de 8 %. El sistema RAFA-CMC demostró ser una buena alternativa para el tratamiento de agua residual y la generación simultánea de electricidad aún bajo condiciones de limitación de sustrato, es decir, con baja concentración de materia orgánica en el influente.Key words: anaerobic digestion, organic matter removal, coupled system, power density, coulombic efficiency ABSTRACTThe performance of a system consisting of an up-flow anaerobic sludge blanket (UASB) reactor and a microbial fuel cell (MFC) for the treatment of low-strength wastewater and the recovery of energy was evaluated. The UASB reactor (1 L) was continuously fed with raw domestic wastewater under hydraulic retention times (HRT) of 12 and 6 h. The MFC (250 mL) was operated in batch mode and fed with either raw wastewater (HRT = 12 h) or the effluent from the UASB reactor (HRT = 6 h). It was found that the removal of organic matter by the coupled UASB-MFC system (88 % chemical

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Section: Introductionunclassified

Tratamiento De Agua Residual Doméstica Mediante Un Reactor Rafa Y Una Celda Microbiana De Combustible

Martínez-Santacruz

Herrera-López

Gutiérrez-Hernández

et al. 2016

Rev. Int. Contam. Ambie.

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“…These observations are consistent with the results obtained in this study, which showed that performance of the UASB reactor was influenced by the upflow velocity. At this stage it should also be noted that past researches (Lew et al, 2004;Halalsheh et al, 2005;Moussavi et al, 2010) have shown that high values of the upflow velocity can disturb the sludge bed and the solids can therefore be carried from the reactor into the effluent.…”

Section: Bod 5 Removalmentioning

confidence: 97%

Factors Affecting BOD5 and TSS Removal from Wastewater Using UASB Reactor

Syafrudin¹,

Sudarno²,

Rizqianti³

et al. 2015

J. of Environmental Science and Technology

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The purpose of this study is to investigate the efficiency of the UASB reactors (Upflow Anaerobic Sludge Blanket) at the laboratory scale in processing the mixture of domestic wastewater (greywater and black water). Two parameters of influent concentration and the upflow velocity were changed for the evaluation. Low, medium and high influent concentrations were used and the parameters examined were Biological Oxygen Demand (BOD 5 ) and Total Suspended Solid (TSS). Results showed 76% as the maximum BOD 5 removal efficiency and the maximum TSS removal efficiency was 72%. The BOD 5 and TSS concentrations available to be removed by the microorganisms increased with the increasing wastewater concentration. Generally, slower upflow velocity allowed more time for the biomass to achieve substrate decomposition in the wastewater, therefore higher removal efficiency was observed with slower upflow velocity. Nevertheless, further processing of the treated wastewater is recommended as the treatment using the UASB reactor did not meet the quality standards specified by the Ministerial Environmental Decree of Indonesia.

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“…However, a sharp drop in the methane generation was noted at the reactor temperature exceeding 45 ∘ C because of a substantial decline in the activity of mesophilic granular sludge due to bacterial inactivation. Halalsheh et al [75] treated high strength sewage (COD = 1531 mg/L) using a UASB pilot plant under subtropical conditions. The COD tot removal efficiencies were 62% and 51% in summer and winter, respectively, when the plant was operated at ambient temperature (18)(19)(20)(21)(22)(23)(24)(25) ∘ C) and hydraulic retention time of 24 hours.…”

Section: Effect Of Temperaturementioning

confidence: 99%

“…The allowable limit of upflow velocity is 0.5-1.5 m/h as reported by different researchers. For the treatment of municipal wastewater in UASB reactor, researchers have reported successful operation at 0.31-0.426 m/h up at 3-4 h of HRT [32,75].…”

Section: Effect Of Hydraulic Retention Time (Hrt)mentioning

confidence: 99%

Review of Upflow Anaerobic Sludge Blanket Reactor Technology: Effect of Different Parameters and Developments for Domestic Wastewater Treatment

Daud

Rizvi

Akram

et al. 2018

Journal of Chemistry

103

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The upflow anaerobic sludge blanket (UASB) reactor has been recognized as an important wastewater treatment technology among anaerobic treatment methods. The objective of this study was to perform literature review on the treatment of domestic sewage using the UASB reactor as the core component and identifying future areas of research. The merits of anaerobic and aerobic bioreactors are highlighted and other sewage treatment technologies are compared with UASB on the basis of performance, resource recovery potential, and cost. The comparison supports UASB as a suitable option on the basis of performance, green energy generation, minimal space requirement, and low capital, operation, and maintenance costs. The main process parameters such as temperature, hydraulic retention time (HRT), organic loading rate (OLR), pH, granulation, and mixing and their effects on the performance of UASB reactor and hydrogen production are presented for achieving optimal results. Feasible posttreatment steps are also identified for effective discharge and/or reuse of treated water.

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Treatment of strong domestic sewage in a 96 m UASB reactor operated at ambient temperatures: two-stage versus single-stage reactor

Cited by 61 publications

References 8 publications

Tratamiento De Agua Residual Doméstica Mediante Un Reactor Rafa Y Una Celda Microbiana De Combustible

Tratamiento De Agua Residual Doméstica Mediante Un Reactor Rafa Y Una Celda Microbiana De Combustible

Factors Affecting BOD5 and TSS Removal from Wastewater Using UASB Reactor

Review of Upflow Anaerobic Sludge Blanket Reactor Technology: Effect of Different Parameters and Developments for Domestic Wastewater Treatment

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