Low-strength wastewater treatment by a multistage anaerobic filter packed with waste tyre rubber

Reyes, Orlando; Sánchez, E.; Rovirosa, N.; Borja, R.; Cruz, Mario; Colmenarejo, M.F.; Escobedo, Rigoberto; Ruíz, M; Rodríguez, Xesús Rodríguez; Correa, O.

doi:10.1016/s0960-8524(99)00010-3

Cited by 35 publications

(13 citation statements)

References 10 publications

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“…The biological process of anaerobic digestion is governed significantly by the conditions under which it is run such as alkalinity, nutrient content, loading rate, toxicity of constituents, pH and temperature [2]. Anaerobic treatment can be improved with the use of biomass retention by the immobilization of anaerobic microorganisms [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of adding nitrate on the performance of a multistage biofilter used for anaerobic treatment of high-strength wastewater

Ghaniyari-Benis

Borja

Bagheri

et al. 2010

Chemical Engineering Journal

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This laboratory research was carried out to evaluate the performance of a multistage anaerobic biofilm reactor, with six compartments and a working volume of 70 L, for the treatment of a strong synthetic nitrogenous and high-strength wastewater at an operational temperature of 26ºC ± 0.5ºC. Initially, the performance of the reactor was studied when subjected to an increase in the hydraulic retention time (HRT) at a constant influent COD concentration of 10000 mg/L. Five different HRTs were studied: 0.25, 0.67, 1, 3 and 5 days, which were equivalent to 6, 16, 24, 72 and 120 hours, respectively . By increasing the HRTs from 6 h to 1 day, COD and BOD removal efficiencies were increased from 63% to 84% and from 66% to 87%, respectively. Moreover, at an HRT of 3 days, COD and BOD removal efficiencies were equal, reaching 93%. In the second phase of the research, the effect of adding nitrate with a concentration of 3000 mg/L at an influent organic loading rate of 10 g COD/L·day was researched on the reactor performance and the amount of biogas produced. Denitrification took place almost solely in the first three compartments of the reactor, with efficiencies of 85%, 95% and 98%, respectively. The nitrite produced was only detected in the first and second compartments at concentrations of 138 mg/L and 24 mg/L, respectively. In addition, no accumulation of nitrite was detected in the reactor. Furthermore, the denitrification caused an increase in the total volume of produced biogas from 102 L/d to 178 L/d.

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Section: Introductionmentioning

confidence: 99%

Effect of adding nitrate on the performance of a multistage biofilter used for anaerobic treatment of high-strength wastewater

Ghaniyari-Benis

Borja

Bagheri

et al. 2010

Chemical Engineering Journal

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“…In order to verify the possibility of decreasing the system costs, a non-biodegradable waste, specifically tire rubber chips (TC), was employed as the packing material. Such approach was already tested in the development of anaerobic biofilm reactors (Reyes et al 1999;Shin et al 1999). The TC-process performances were compared with the ones of a system packed with a high porous alumina-based ceramic industrial product, namely Vukopor S10, employed in cubes of about 2 cm of side (ceramic cubes, CC).…”

Section: Introductionmentioning

confidence: 99%

Anaerobic codigestion of the mechanically sorted organic fraction of a municipal solid waste with cattle manure in packed microcosms under batch conditions

Bertin

Todaro²,

Bettini³

et al. 2008

Water Science and Technology

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Packed microcosms, consisting of 0.6 L-flask filled with tire chips (TC, a non-cost-recyclable non-biodegradable material) or ceramic cubes, were employed in the wet batch mesophilic anaerobic codigestion of a mechanically sorted organic fraction of a municipal solid waste with cattle manure. Two different waste mixtures were digested within four successive batch experiments, performed by collecting the digested waste and by refilling each microcosm with the same experimental mixture. Methane production yields related to the first experiment were comparable to those of non-packed identically developed microcosms, while they significantly grew during all the following experiences. No CH4-production lag-phase was observed since the second batch experiment. Similar results were obtained for both packing materials: however, the highest methane yields were achieved within bioreactors packed with TC in the presence of a mixture in which the volatile suspended solids (VSS) provided by the municipal waste represented the 55% of the total ones. Under such condition, a methane yield corresponding to the biochemical methane potential (BMP) calculated through a 6-month experiment with non-packed microcosms (176 ml/gVS) was attained in about 1/4 of the time. Importantly, the BMP can significantly grow up as a consequence of the approach described in this study.

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“…The authors attributed the resistance and capacity of recovering to the design of the immobilized biofilm, which enabled the temporarily inhibited biofilms to be retained in the AFBR and regain activity when favourable conditions were restored. The characteristics of the support media have been studied by different researchers [18][19][20][21][22][23]. The experimental results have demonstrated the advantages of using corrugated supports in the attachment of microorganisms and consequently achieving high organic matter removal efficiencies.…”

Section: Introductionmentioning

confidence: 99%

“…AFBR can be used at two different feeding modes: down-flow or up-flow. Down-flow anaerobic fixed bed reactor (DFAFBR) is more adequate when wastewater contains a high concentration of suspended solids because of the lower probability of clogging than the up-flow mode reactor [17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Effect of influent substrate concentration and hydraulic retention time on the performance of down-flow anaerobic fixed bed reactors treating piggery wastewater in a tropical climate

Sánchez¹,

Borja²,

Travieso³

et al. 2005

Process Biochemistry

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Low-strength wastewater treatment by a multistage anaerobic filter packed with waste tyre rubber

Cited by 35 publications

References 10 publications

Effect of adding nitrate on the performance of a multistage biofilter used for anaerobic treatment of high-strength wastewater

Effect of adding nitrate on the performance of a multistage biofilter used for anaerobic treatment of high-strength wastewater

Anaerobic codigestion of the mechanically sorted organic fraction of a municipal solid waste with cattle manure in packed microcosms under batch conditions

Effect of influent substrate concentration and hydraulic retention time on the performance of down-flow anaerobic fixed bed reactors treating piggery wastewater in a tropical climate

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