Influence of porosity and composition of supports on the methanogenic biofilm characteristics developed in a fixed bed anaerobic reactor

Picanço, A. P.; Vallero, M.V.G.; Gianotti, Eloisa Pozzi; Zaiat, Marcelo; Blundi, Carlos Eduardo

doi:10.2166/wst.2001.0220

Cited by 75 publications

(34 citation statements)

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“…Their corresponding removal values reached, 76.7, 77 and 86.2%, respectively, with corresponding residual values of 85, 54 and 28 mg/l. These results indicated that the use of the packing material (lamella sheets) enhanced the removal effi ciency of the organic materials [8]. These results are in agreement with Refs.…”

Section: Effect Of Hrt (6 H)supporting

confidence: 92%

“…Specifi c surface area, porosity, surface roughness, pore size and orientation of the packing material was found to play an important role in anaerobic reactor performance. Many carrier materials have been investigated regarding their suitability as supports for bio-fi lm, including cheap, readily available material like sand, clay, glass, quartz and a number of plastics [8]. In nature, microorganisms inhabit the outer and inner surfaces of stones, gravel or sand.…”

Section: Introductionmentioning

confidence: 99%

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Packed bed up-flow anaerobic sludge blanket combined with multistage sand fine roughing filtration for municipal wastewater treatment and reuse

Abou‐Elela¹,

Fawzy²,

Abdel-Halim³

2013

Int. J. SDP

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There is a high potential for reuse of treated wastewater due to the shortage of renewable water resources for agricultural purposes in many countries of the world. To achieve this goal, an integrated anaerobic pilot plant treatment system treating almost 10 m 3 /day of wastewater was designed, manufactured and installed in a nearby wastewater treatment plant. The treatment scheme consists of a packed bed up-fl ow anaerobic sludge blanket (P-UASB) with corrugated lamella sheets, followed by inclined plate settler (IPS). However, to obtain a treated effl uent amenable for reuse, post-treatment was carried out using a multi-stage roughing fi ne fi ltration unit (MSRFF). The pilot plant was operated at average hydraulic fl ow rate of 10 m 3 /day with average organic loading rate of 3.27 kg chemical oxygen demand (COD) m 3 /day. Two retention times in P-UASB namely, 4 and 6 h were investigated. The performance of the treatment scheme was monitored via physico-chemical as well as bacteriological and parasitological analysis. Treatment of wastewater by P-UASB followed by IPS produced a high quality effl uent. Average removal rates of COD, biochemical oxygen demand (BOD) and total suspended solids (TSS) were 75, 70.6 and 91.3, respectively, with average corresponding residual values of 75, 58 and 18 mg/l. However, to obtain sustainable quality of treated effl uent for reuse, post-treatment using MSRFF improved the quality of treated wastewater both chemically and biologically. The average residual concentrations of COD, BOD and TSS were 60, 34 and 10.9 mg/l, respectively, while almost complete removal of Fecal Coliforms was achieved. The treatment scheme proved to be a very promising approach for wastewater treatment for reuse in agricultural purposes.

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Section: Effect Of Hrt (6 H)supporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Packed bed up-flow anaerobic sludge blanket combined with multistage sand fine roughing filtration for municipal wastewater treatment and reuse

Abou‐Elela¹,

Fawzy²,

Abdel-Halim³

2013

Int. J. SDP

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“…The general growth [24] and the microbial community [25] of biofilm on carriers are depending on physicochemical surface properties of the carriers.…”

Section: Biofilm Formationmentioning

confidence: 99%

Magnetic Biofilm Carriers: The Use of Novel Magnetic Foam Glass Particles in Anaerobic Digestion of Sugar Beet Silage

Ramm

Jost

Neitmann

et al. 2014

Journal of Renewable Energy

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The use of recently developed magnetic foam glass particles for immobilization of microbial biomass was tested. The effect of the particles was illustrated at the production of biogas from sugar beet silage as the sole substrate. Lab-scale fermentation experiments were conducted using a mesophilic completely stirred tank reactor and a magnetic separator. Microscopic analysis revealed biofilm coverage of 50-60% on the surface of the particles within 110 days. It was possible to recover 76.3% of the particles from fermentation effluent by means of a separation procedure based on magnetic forces. Comparing a particle charged reactor with a control reactor showed a small performance gain. The methane rate was increased from 1. were achieved. Based on the results, it can be concluded that the use of magnetic particles could be an attractive option for the optimization of biogas production.

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“…Many carrier materials have been investigated regarding their stability as support for biofilm, including cheap, readily available materials like, sand, clay, glass, quartz and a number of plastics [8]. Picanco et al [9] reported that the efficiency of removing organic matters in fixed-bed reactors is directly related to the characteristics of the support material used for immobilization of anaerobes. It is widely accepted that organic support material has a higher affinity than inorganic material [10].…”

Section: Introductionmentioning

confidence: 99%

Integrated sustainable anaerobic treatment for low strength wastewater

Abou‐Elela¹,

Fawzy²,

El-Khateeb³

et al. 2011

WIT Transactions on Ecology and the Environment

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The main objective of this study is to demonstrate and implement a cost effective system for low strength municipal wastewater treatment in rural areas. An integrated compact anaerobic treatment pilot plant unit was designed, constructed and operated for almost two years. The pilot plant consists of three successive compartments mainly; primary sedimentation (PS), packed bed up flow anaerobic sludge blanket (P-UASB) and inclined plate settler (IPS). The pilot plant was operated continuously at a hydraulic loading rate of 6m 3 /day, average organic loading rate of 2.5 kg COD/m 3 /day and average retention time of 4 hrs at the P-UASB and a total retention time 6 hrs for the integrated treatment unit. The performance of the treatment train was monitored via physico-chemical as well as bacteriological and parasitological analysis. The average removal rates of chemical oxygen demand (COD), biological oxygen demand (BOD 5 ) and total suspended solids (TSS) were 78%, 79% and 91%, respectively with corresponding average residual values of 71 mgO 2 /l, 39 mgO 2 /l and 18 mg/l. Pathogenic analysis indicated that great majorities were removed but still some residuals exist. The treated wastewater, after disinfection, was complying with the Egyptian Code for wastewater reuse in restricted irrigation. The results indicated that the total life cost of the pilot plant, during the research period, proved to be a cost-effective process for treating low strength wastewater. Keywords: low strength wastewater, anaerobic treatment, packed upflow anaerobic sludge blanket, inclined plate settler.

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Influence of porosity and composition of supports on the methanogenic biofilm characteristics developed in a fixed bed anaerobic reactor

Cited by 75 publications

References 0 publications

Packed bed up-flow anaerobic sludge blanket combined with multistage sand fine roughing filtration for municipal wastewater treatment and reuse

Packed bed up-flow anaerobic sludge blanket combined with multistage sand fine roughing filtration for municipal wastewater treatment and reuse

Magnetic Biofilm Carriers: The Use of Novel Magnetic Foam Glass Particles in Anaerobic Digestion of Sugar Beet Silage

Integrated sustainable anaerobic treatment for low strength wastewater

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