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首页> 外文期刊>Journal of Chemical Engineering of Japan >Start-up of EGSB Reactor for Treatment of Wastewater ContainingPentachlorophenol
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Start-up of EGSB Reactor for Treatment of Wastewater ContainingPentachlorophenol

机译：EGSB反应器启动，用于处理含五氯苯酚的废水

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摘要

By using a Lab-scale Expanded Granular Sludge Bed (EGSB) reactor,the strategies of start-up and the changes of characteristics of granular sludge before and after start-up were investigated.In the first stage,the pentachlorophenol (PCP) concentration in wastewater was fixed at 5 mg/L,and the organic loading rate (OLR) gradually increased.The OLR increased to5.4 kg COD/(m~3-reactor d) after 25 days.Then began the second stage,OLR was stabilized at 5 kg COD/(m~3-reactor d),while the PCP concentration was gradually increased.The PCP loading rate increased to 94.7 mg/(L-reactor d) in 63 days after the second stage start-up,the COD removal and PCP removal were 91.2% and 99.6% respectively.The EGSB reactor has the ability to bear PCP overloading to some extent.After the start-up was finished,the settlement velocity of granular sludge increased,the specific methanogenic activity of sludge and dechlorination rate of PCP were apparently increased.The results show that the two-stage start-up strategy is appropriate.
机译：通过实验室规模的膨胀颗粒污泥床（EGSB）反应器，研究了启动策略和启动前后颗粒污泥特性的变化。第一阶段，对五氯苯酚（PCP）进行浓缩。废水固定在5 mg / L，有机负荷率（OLR）逐渐增加.25天后，OLR增加到5.4 kg COD /（m〜3-反应器d）。然后开始第二阶段，OLR稳定在5 kg COD /（m〜3-反应器d）下，PCP浓度逐渐增加。第二阶段启动后63天，PCP负载率增加到94.7 mg /（L反应器d）。去除率和PCP去除率分别为91.2％和99.6％。EGSB反应器具有一定程度的承受PCP过载的能力。启动完成后，颗粒污泥的沉降速度增加，污泥的比甲烷生成活性和脱氯作用结果表明，两阶段启动过程态度适当。

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