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مقالات شیمیایی 2013
جزئیات رویداد
همایش ، رویداد ، ژورنال
اینستاگرام تی پی بین
حوزه های تحت پوشش رویداد
  • جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 940
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     laboratory experiments involving shutdown and repeated start-up of a denitrification usb reactor with granulated anoxic biomass were conducted in order to find suitable conditions for a safe storage period of the biomass. anoxic granulated biomass stored under anaerobic conditions for a half year period at 6°c and for a half month period at 18–20°c retained its activity and granular morphology. storage of anoxic granules under anaerobic conditions for a half year period at 18–20°c led to the loss of the biomass original activity and a significant portion of the granules disintegrated. anoxic granulated biomass stored for a one and a half month period under endogenous anoxic conditions at 18–20°c retained its activity and granular morphology. a two month storage under endogenous anoxic conditions at 18–20°c was too long and the shutdown of the reactor had to be followed by repeated anoxic granulation. minimum loading of the usb reactor with n-no3 to maintain endogenous anoxic conditions in the sludge bed was in the range of 0.06–0.1 kg of n-no3 per m3per day. restart of the usb reactor can be accelerated by an addition of anaerobic granulated biomass.

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