Application of the Anaerobic Sequencing Batch Reactors with Fixed Film in the Treatment of Industrial Wastewater Containing High Sulfate Concentration = Aplicação De Reatores Anaeróbios Operados Em Bateladas Sequenciais Com Filme Fixo No Tratamento De Água Residuaria Industrial Rica Em Sulfato (original) (raw)

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 48h) 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=385,0 L) with same inert support for biomass immobilization and different granulometry. The mean COD removal (mean influent=1450 mg.L-1) achieved 88%...

Eugenio Foresti hasn't uploaded this paper.

Let Eugenio know you want this paper to be uploaded.

Ask for this paper to be uploaded.