APPLICATION OF THE ANAEROBIC SEQUENCING BATCH REACTORS WITH FIXED FILM IN THE TREATMENT OF INDUSTRIAL WASTEWATER CONTAINING HIGH SULFATE CONCENTRATION

Authors

  • Arnaldo Sarti Escola de Engenharia de São Carlos/USP
  • Eugenio Foresti Escola de Engenharia de São Carlos/USP

DOI:

https://doi.org/10.14295/holos.v9i1.1096

Keywords:

Sulfato, Sulfeto, Tratamento Anaeróbio, Carvão Mineral

Abstract

This paper presents and discusses the potential for use of pilot-scale anaerobic sequencing batch biofilm reactors (ASBBR) for the treatment of industrial wastewater containing high sulfate concentration. The pilot-scale ASBBR reactor (total volume= 1.2 m3) containing biomass immobilized in inert support (mineral coal) was operated at sulfate loading rates varying from 0.15 to 1.90 kgSO4-2/cycle (cycle of 48 h) corresponding to sulfate concentrations of 0.25 to 3.0 gSO4-2.L-1. Domestic sewage and ethanol were utilized as electron donors for sulfate reduction. The mean sulfate removal efficiencies remained in the range of 88 to 92% in the several sulfate concentrations obtained from 92 operational cycles. As post-treatment unit for the generated effluents by the sulfate reduction was used another reactor ASBBR in pilot-scale (total volume=385 L) with similar inert support for biomass immobilization. The mean COD removal (mean influent=1450 mg.L-1) achieved 88% and total sulfide concentrations (H2S, HS−, S2−) remained in the range of 41 to 71 mg.L-1 during the 35 operational cycles of 48 h. The results demonstrated that the use of ASBBR reactors is an alternative potential for the sulfate removal and as post-treatment of generated effluent.

Author Biographies

Arnaldo Sarti, Escola de Engenharia de São Carlos/USP

Engenheiro Químico (UFSCar). Doutor em Engenharia Civil. Área Hidráulica e Saneamento (EESC/USP). Pós-Doutor do Departamento de Hidráulica e Saneamento (EESC/USP).

Eugenio Foresti, Escola de Engenharia de São Carlos/USP

Engenheiro Civil (EESC/USP). Doutor em Engenharia Civil (EESC/USP) - Departamento de Hidráulica e Saneamento. Professor Titular do Departamento de Hidráulica e Saneamento (EESC/USP).

Published

2009-02-24

How to Cite

Sarti, A., & Foresti, E. (2009). APPLICATION OF THE ANAEROBIC SEQUENCING BATCH REACTORS WITH FIXED FILM IN THE TREATMENT OF INDUSTRIAL WASTEWATER CONTAINING HIGH SULFATE CONCENTRATION. Holos Environment, 9(1), 65–81. https://doi.org/10.14295/holos.v9i1.1096

Issue

Section

Artigos