ANAEROBIC DIGESTION OF SEWAGE SLUDGE USING SEQUENTIAL REACTORS: START- UP AND SYSTEMS STABILIZATION

Authors

  • DURVAL R. DE PAULA JR Professor Livre docente, Faculdade de Engenharia Agrícola – FEAGRI/UNICAMP Cidade Universitária Zeferino Vaz, Campinas - SP, Caixa Postal 6011, Brasil.
  • DENIS M. ROSTON Professor Doutor, Faculdade de Engenharia Agrícola – FEAGRI/UNICAMP.
  • EDSON ABDUL.A. NOUR Professor Doutor, Faculdade de Engenharia Civil – FEC/UNICAMP.
  • LUCIANA M. MORAES Professora Doutora, Faculdade de Tecnologia FATEC/ITAPETININGA.
  • SANDRA APARECIDA R. DE CAMARGO Doutoranda, Faculdade de Engenharia Civil – FEC/UNICAMP.

DOI:

https://doi.org/10.18011/bioeng2008v2n2p91-97

Keywords:

Anaerobic digestion, Sewage Sludge, Sequential Anaerobic Reactors.

Abstract

The objective of this work was the implantation and evaluation of three sludge anaerobic digestion systems. The system A configuration was defined by five continuous flow sequential anaerobic reactors (SAR) with effluent recycling. System B had the same layout, but recirculation was substituted by mechanical mixers installed in each reactor. System C was composed by only one continuous flow stirred tank reactor. The systems were evaluated by weekly monitoring of physicalchemical parameters. Samples were taken from influent, effluent and intermediary ports during an operation period of 115 days. During the most stable operational period (PHASE II), the results indicated total solids removal rate of 95, 40 and 29%, and volatile solids removal rate of 95, 34 and
22%, for System A, B and C, respectively. The sequential anaerobic reactors (System A and B) presented better performance than conventional digestor (System C).

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References

AWWA/APHA, WEF (1998) StandardMethods for the Examination of Water andWastewater. 20a edition. Washington.

BETTIOL, W.; CAMARGO, O. (2000) A.Impacto Ambiental do Uso Agrícola do Lodo deEsgoto, Jaguariúna, SP, 312p.DILLALO R. & ALBERTSON O.E. (1961)Volatile acids by direct titration. Journal WaterPollution Control Federation, 33(4), 356-65.

RIPLEY L.E., BOYLE W.C. &CONVERSE J.C. (1986) Improved alkalimetricmonitoring for anaerobic digestion of high-strength wastes. Journal Water Pollution ControlFederation, 58(5), 406-11.

VESILIND, P.A. (1974) Treatment andDisposal of Wastewater Sludges, Ann ArborScience Publishers Inc., EUA, 236 p.

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Published

12-11-2008
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How to Cite

PAULA JR, D. R. D., ROSTON, D. M., NOUR, E. A., MORAES, L. M., & CAMARGO, S. A. R. D. (2008). ANAEROBIC DIGESTION OF SEWAGE SLUDGE USING SEQUENTIAL REACTORS: START- UP AND SYSTEMS STABILIZATION . Brazilian Journal of Biosystems Engineering, 2(2), 91–97. https://doi.org/10.18011/bioeng2008v2n2p91-97

Issue

Vol. 2 No. 2 (2008)

Section

Regular Section

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Copyright (c) 2008 The Authors

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