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  • performance of intermittently aerated up-flow sludge bed reactor and sequencing batch reactor treating industrial estate wastewater: a comparative study

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 617
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     in this study, an innovative aerobic/anoxic sludge bed bioreactor with two feeding regimes, continuous-fed (an up-flow sludge bed reactor (usbr)) and batch fed (sequencing batch reactor (sbr)), was evaluated for the treatment of an industrial estate wastewater with low bod5/cod ratio. the process performance in the two regimes was compared. two numerical independent variables (retention/react time and aeration time) were selected to analyze, model and optimize the process. response surface methodology with central composite design (ccd) was used with five levels of hydraulic retention time (hrt)/react time (12–36 h) and aeration time (40–60 min/h). in order to analyze the process, ten dependent parameters as the process responses were studied. as a result, hrt/react time showed a decreasing impact on the responses measured in both hydraulic regimes, usbr and sbr. the usbr showed better performance than the sbr in removal of total cod, slowly biodegradable cod, total nitrogen and total kjeldahl nitrogen.

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