臭氧
化学
基质(水族馆)
微生物
环境化学
降级(电信)
反应速率常数
生物降解
制浆造纸工业
产量(工程)
污染物
色谱法
动力学
有机化学
材料科学
细菌
生态学
电信
遗传学
物理
量子力学
计算机科学
工程类
生物
冶金
作者
F. Javier Benítez,Juan L. Acero,Teresa Artola González,Juan Garcı́a
标识
DOI:10.1081/ese-120005988
摘要
ABSTRACT The oxidation of the pollutant organic matter present in wastewaters generated during different stages in the black table-olive industry was investigated by using ozone alone or combined with UV radiation; by using aerobic microorganisms; and finally, by aerobic degradation of the previously ozonated wastewaters. In the ozonation processes, the removal of substrate (COD) and aromatic compounds, the decreases in BOD5 and pH, and the ozone consumed in the reaction were evaluated. A kinetic study was conducted that led to the evaluation of the stoichiometric ratio for the chemical reaction, as well as the rate constants for the substrate reduction and ozone disappearance. In the single aerobic degradation treatment, the evolution of substrate and biomass was monitored during the process, and a kinetic study was performed by applying the Contois model to the experimental data, giving the specific biokinetic constant, the cell yield coefficient, and the rate constant for the microorganism death phase. Finally, a combined process was performed, consisting in the aerobic degradation of pre-ozonated wastewaters, and the effect of such chemical pretreatment on the substrate removal and kinetic parameters of the later biological stage is discussed.
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