Data/hora: 09/06/2024 12:45:29

Provedor de dados: | Electronic Journal of Biotechnology
País: | Chile
Título: | Effect of sulphate concentration and sulphide desorption on the combined removal of organic matter and sulphate from wastewaters using expanded granular sludge bed (EGSB) reactors
Autores: | Valdés,Freddy; Muñoz,Edmundo; Chamy,Rolando; Ruiz,Gonzalo; Vergara,Christian; Jeison,David.
Data: | 2006-07-01
Ano: | 2006
Palavras-chave: | Anaerobic digestion; EGSB; Sulphate reduction; Sulphide.
Resumo: | During the application of anaerobic processes to high sulphate concentration wastewaters, operational problems are expected due to the occurrence of sulphate reduction. Sulphide production reduces effluent quality and may produce inhibition. The application of Expanded Granular Sludge Bed (EGSB) reactors for the combined removal of organic matter and sulphate was studied at different COD/sulphate and 3 values of pH. During the EGSB reactor operation, most of the sulphide remains in the liquid phase reducing effluent quality. The inclusion of a desorption column in the recirculation of the EGSB reactor promotes mass transfer to the gas phase, reducing the sulphide concentration in the liquid phase, significantly decreasing the chemical oxygen demand of the effluent.
Tipo: | Journal article
Idioma: | Inglês
Identificador: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000400004
Editor: | Pontificia Universidad Católica de Valparaíso
Formato: | text/html
Fonte: | Electronic Journal of Biotechnology  v.9 n.4 2006