Please use this identifier to cite or link to this item:
http://hdl.handle.net/11375/20303
Title: | Biological Fluidized Bed Denitrification of Wastewater |
Authors: | Stephenson, Joseph P. |
Advisor: | Murphy, K. L. |
Department: | Chemical Engineering |
Keywords: | biological, fluidized, denitrification, wastewater, Arrhenius, reactor |
Publication Date: | Mar-1978 |
Abstract: | <p> A half-order kinetic model (8-48 mg NO3+NO2-N/l), coupled with a temperature dependency described by the Arrhenius relationship (4°-27° C), adequately described biological denitrification of municipal wastewater in a pilot scale fluidized bed reactor. Biofilm support media (activated carbon or sand) and hydraulic flux (0.25-1.7 m^3/m^2·min) were not found to be significant factors in controlling denitrification rate within the reactor. Control of biofilm thickness on the support media was essential for satisfactory operation of the process; excess thickness contributed to elutriation of media and attached biofilm. Under similar influent wastewater conditions, the fluidized bed process was capable of equivalent NO3+NO2-N removal in about one-tenth of the time necessary in a suspended growth or a rotating biological contactor (RBC) process. Temperature dependency of the NO3+NO2-N removal rate appeared to be less than the dependency in a suspended growth or a RBC process, but similar to the dependency observed in a packed column.</p> |
URI: | http://hdl.handle.net/11375/20303 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Stephenson_Joseph_P._1978Mar_Masters..pdf | 5.18 MB | Adobe PDF | View/Open |
Items in MacSphere are protected by copyright, with all rights reserved, unless otherwise indicated.