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E. Ferrer-Polonio,J.A. Mendoza-Roca,A. Iborra-Clar,J.L. Alonso-Molina,L. Pastor-Alcañiz 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.43 No.-
Biological treatment of hypersaline wastewaters such as fermentation brine from table olive processing(FTOP), was carried out using four sequential biological reactors (SBRs). These wastewaters werecharacterized by conductivities higher than 90 mS cm 1 together with COD and total phenolsconcentration values of more than 15 g L 1 and 1000 mg L 1, respectively. In order to increase theorganic removal efficiency and to reduce the hydraulic retention time (HRT), extra nutrients were addedand pre-treatment by adsorption was performed. Results showed that the COD/N/P relationship, in theFTOP, of 250/5/1 was appropriate for the biological process reaching COD removal efficiencies of around80%. The FTOP adsorption pre-treatment with powder activated carbon for the reduction of phenolsconcentration to 400 mg L 1 led to a HRT reduction from 40 to 15 days, maintaining the COD and totalphenols removal percentages around 78% and 97%, respectively. On the other hand, g-Proteobacteria wasthe main bacterial class, representing around 74% of the microbial community in the reactors.
E. Ferrer-Polonio,B. Pérez-Uz,J.A. Mendoza-Roca,A. Iborra-Clar,L. Pastor-Alcañiz 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.56 No.-
Biological treatment of fermentation brines from table olive processing (FTOP) entails many difficultiesdue to their very high salinity and high COD concentration, which include some phenolic compounds. These extreme conditions limit the biodiversity of the microbial population. Experiments treating FTOPwere performed in laboratory sequencing batch reactors (SBR) changing operating conditions duringtheir operation, in order to study the effects on the SBR performance and on the protist population. Thestatistical study showed that the SBRs with high influent COD, pH and volatile solids and low influentphenol concentration, hydraulic retention time and temperature achieved the highest COD removalefficiencies. These operational conditions also provided the highest ciliate population and the lowestflagellate presence.