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首页> 外文期刊>International Biodeterioration & Biodegradation >Effective treatment of fermentation wastewater containing high concentration of sulfate by two-stage expanded granular sludge bed reactors
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Effective treatment of fermentation wastewater containing high concentration of sulfate by two-stage expanded granular sludge bed reactors

机译：两级膨胀式颗粒污泥床反应器有效处理高浓度硫酸盐发酵废水

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The fermentation wastewater containing high concentration of sulfate was treated by a two-stage expanded granular sludge bed (EGSB) reactor system, which was primarily responsible for the removal of both sulfate and organics. The sulfate concentrations in the fermentation wastewater varied from hundreds to 5000 mg l(-1) with an average of 1000 mg l(-1). In the first EGSB reactor, the COD removal efficiency decreased from 93% to 65% with an increase in sulfate concentrations from 200 mg l(-1) to 2000 mg l(-1), and, at the same time, the sulfate removal efficiency increased from 90% to 95%. Moreover, similar to 90% of COD were removed by the two-stage EGSB reactor system when the sulfate concentration was controlled at 2000 mg The removal efficiencies of COD and sulfate concentration declined obviously when the sulfate concentration was raised to 3000 mg l(-1) in the influent, indicating that microbial activity was inhibited by sulfate; they declined to 83% and 40%, respectively, with a further increase in the sulfate concentration to 5000 mg l(-1). The bacterial community analyzed by the high-throughput pyrosequencing method showed that the proportion of Desulfovibrio spp. increased from 2.8% to 10.8% in the anaerobic granular sludge after treating the fermentation wastewater. The results suggest that sulfate containing wastewater can be treated with properly configuration of the reactors so that both COD and sulfate can be removed. (c) 2015 Elsevier Ltd. All rights reserved.
机译：含高浓度硫酸盐的发酵废水通过两级膨胀颗粒污泥床（EGSB）反应器系统进行处理，该系统主要负责去除硫酸盐和有机物。发酵废水中的硫酸盐浓度从数百到5000 mg l（-1）不等，平均为1000 mg l（-1）。在第一个EGSB反应器中，随着硫酸盐浓度从200 mg l（-1）增加到2000 mg l（-1），COD去除效率从93％降低到65％，同时，硫酸盐去除效率从90％提高到95％。此外，当硫酸盐浓度控制在2000 mg时，两级EGSB反应器系统去除了约90％的COD。当硫酸盐浓度提高到3000 mg l（-1）时，COD和硫酸盐的去除效率明显降低。 ），表明微生物活性被硫酸盐抑制;它们分别下降至83％和40％，硫酸盐浓度进一步提高至5000 mg l（-1）。通过高通量焦磷酸测序法分析的细菌群落显示出脱硫弧菌的比例。处理发酵废水后，厌氧颗粒污泥的污泥从2.8％增加到10.8％。结果表明，可以通过适当配置反应器来处理含硫酸盐的废水，从而可以去除COD和硫酸盐。 （c）2015 Elsevier Ltd.保留所有权利。

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