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Winery Wastewater Treatment Applying Aerated Submerged

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Author(s): Angela Renata Cordeiro Ortigara | Fernando Soares Pinto Sant’anna | Alessandra Pellizzaro Bento | Pablo Heleno Sezerino

Journal: Engenharia Ambiental : Pesquisa e Tecnologia
ISSN 1678-2178

Volume: 7;
Issue: 2;
Start page: 041;
Date: 2010;
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Keywords: Wastewater Treatment | Winery wastewater | Aerated Submerged Biofilter.

ABSTRACT
The winery wastewater usually shows conditions of low pH, high organic loads and concentrations of carbon, nitrogen and phosphorus that are inappropriate for biologic treatment. The purpose of this research was to apply the technology of aerated submerged biofilter (ASB) for the winery effluent treatment during the harvest (ASB 1) and non harvest (ASB 2) at lab scale. Therefore, two up flow biofilter built on glass (5 liters volume) were installed. The nutrient balance of the winery wastewater was adjusted and the correction of the pH was done by oyster shell used as filter material. The efficiency removal (COD) for the harvest reactor was 90% while for the non harvest was 82%. The oyster shells contributed to an increase on average of 180 mg/L of alkalinity to the BAS 1 and 318 mg/L for the BAS 2. As regards the metals, the average values in the treated effluent to meet iron and zinc is permitted by the environmental standards of Santa Catarina. Under the experimental conditions applied in this research, this kind of reactor has presented potential for the treatment of winery wastewater. However, operational improvements would be required in the reactors to adequate them to the specific management into the wineries.
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