Effect of operating parameters on denitrification in an anoxic rotating biological contactor
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چکیده
منابع مشابه
Denitrification in an anoxic rotating biological contactor under two carbon/nitrogen ratios
CEB Biofilm Group In biological denitrification of wastewater nitrate (NO3 -) or nitrite (NO2 -) are converted into nitrogen gas (N2), in the absence of dissolved oxygen (DO) or under limited DO concentrations. A rotating biological contactor (RBC) is an attached growth bioreactor, that constitutes a very unique and superior alternative technology for carbon oxidation, phosphorus removal, nitri...
متن کاملDenitrification in a closed rotating biological contactor: effect of disk submergence
Several studies have employed rotating biological contactors (RBCs) for nitrogen removal. However, partially submersed disks are used for nitrification, while completely submersed disks are used for denitrification. The objective of this study was to investigate the effect of disk submergence in the performance of rotating biological contactors, in terms of the denitrification process. Two RBCs...
متن کاملStart up of an Oxygen-Limited Nitrification Denitrification (OLAND) lab scale rotating biological contactor (RBC)
In this study, the start-up of a lab-scale OLAND RBC was examined. After 221 days of operation, a maximum nitrogen removal rate of 2092 mg N/L.d or 6261 mg N/m.d and a removal efficiency of about 91% were observed. During six operational periods, different supplements were added to the influent and several operational variables were manipulated. The influence of adding hydroxylamine, Dranco com...
متن کاملModified Rotating Biological Contactor
The disposal of domestic wastewater without any treatment into the drainage systems is considered a source of pollution threatening the population. Industrial waste water discharge to the environment is one of the environmental problems which must be controlled. Current mainstream technologies for treatment of domestic wastewater such as activated sludge and tertiary nutrient removal are too co...
متن کاملEffect of organic loading on rotating biological contactor efficiency.
Organic loading (weight per unit time per volume) is useful for the design of rotating biological contactors (RBC) and for comparison with the other processes such as activated sludge or oxidation ponds. The present study puts emphasis on the significance of this control or design parameter because it allows direct comparison of the RBC system's performance when operated under various circumsta...
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ژورنال
عنوان ژورنال: Environmental Technology
سال: 2009
ISSN: 0959-3330,1479-487X
DOI: 10.1080/09593330903156490