Lucas Marco S, Mouta Maria, Pirra António, Peres José A
Centro de Química, Universidade de Trás-os-Montes e Alto Douro, Apartado 1013, 5001-801, Vila Real, Portugal.
Water Sci Technol. 2009;60(4):1089-95. doi: 10.2166/wst.2009.555.
The degradation of the organic pollutants present in winery wastewater was carried out by the combination of two successive steps: an aerobic biological process followed by a chemical oxidation process using Fenton's reagent. The main goal of this study was to evaluate the temporal characteristics of solids and chemical oxygen demand (COD) present in winery wastewater in a long term aerated storage bioreactor. The performance of different air dosage daily supplied to the biologic reactor, in laboratory and pilot scale, were examined. The long term hydraulic retention time, 11 weeks, contributed remarkably to the reduction of COD (about 90%) and the combination with the Fenton's reagent led to a high overall COD reduction that reached 99.5% when the mass ratio (R = H(2)O(2)/COD) used was equal to 2.5, maintaining constant the molar ratio H(2)O(2)/Fe(2+)=15.
一个好氧生物过程，随后是使用芬顿试剂的化学氧化过程。本研究的主要目标是评估长期曝气储存生物反应器中酒厂废水中固体和化学需氧量（COD）的时间特征。考察了在实验室和中试规模下每天供应给生物反应器的不同空气剂量的性能。长达11周的长期水力停留时间对COD的降低有显著贡献（约90%），并且当使用的质量比（R = H₂O₂/COD）等于2.5时，与芬顿试剂的联合使用导致了高达99.5%的总COD降低，同时保持H₂O₂/Fe²⁺的摩尔比恒定为15。
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