Comparison of two strategies for the start-up of a biological reactor for the treatment of hypersaline effluents from a table olive packaging industry
| Autor: | A. Iborra-Clar, E. Ferrer-Polonio, José-Antonio Mendoza-Roca, Laura Pastor-Alcañiz, J.L. Alonso-Molina |
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| Rok vydání: | 2015 |
| Předmět: |
General Chemical Engineering
Population Wastewater treatment INGENIERIA QUIMICA Industrial and Manufacturing Engineering Bioreactor Environmental Chemistry Organic matter Turbidity education Effluent SBR Table olives chemistry.chemical_classification education.field_of_study Chemical oxygen demand Hypersaline effluents Environmental engineering General Chemistry Pulp and paper industry Fermentation brines Wastewater chemistry Environmental science Sewage treatment Polyphenols biodegradation |
| Zdroj: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| ISSN: | 1385-8947 |
| DOI: | 10.1016/j.cej.2015.03.062 |
| Popis: | Biological treatment of hypersaline effluents with high organic matter concentrations is difficult to carry out and it can require a long start-up phase. This is the case of the treatment of fermentation brines from the table olive packaging (FTOP) industries. These effluents are characterized by conductivity values around 90 mS/cm, COD around 15,000 mg/L and total phenols concentration around 1000 mg/L. In this work, FTOP has been treated in two sequencing batch reactors (SBRs) operated in parallel. In each SBR a different start-up strategy has been carried out. In the SBR-2, biomass was previously acclimated to high salinity using simulated wastewater without phenolic compounds, meanwhile in the SBR-1, FTOP was added from the beginning of the start-up. Results indicated more operational problems in the SBR-2 consisting in a higher deflocculation that drove to high turbidity values in the effluent. Besides, at the end of the start-up, the SBR-1 reached higher COD removal efficiencies than SBR-2 (88% and 73%, respectively). In both reactors, an increase in gamma-Proteobacteria in the microbial population was observed for increasing conductivities. In addition, phenols were completely removed in both reactors at the end of the start-up, what implied very low toxicity values in the effluent. The authors of this work thank the financial support of CDTI (Centre for Industrial Technological Development) depending on the Spanish Ministry of Science and Innovation. |
| Databáze: | OpenAIRE |
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