Title page for ETD etd-10072005-094846
|Type of Document
||Utilization of Captor sponges to maintain nitrification and denitrification in BNR activated sludge at low aerobic MCRTs
||Master of Science
|Boardman, Gregory D.
|Love, Nancy C.
|Date of Defense
The performance of Captor media integration into the aerobic zone of an activated sludge
wastewater treatment system operated at low MCRTs was evaluated using a pilot scale
Virginia Initiative Project (VIP) process. Two separate trains were operated, one with
Captor media incorporated into the aerobic zone of the system, referred to as an
Integrated Fixed Film Activated Sludge (IF AS) system, . and the other as a control
system, i.e., with no media in the aerobic reactors. The wastewater used for this research
was pumped from a main municipal sewer of the Blacksburg-VPI Sanitation Authority
Collection System. The TKN of the wastewater was supplemented by the addition of urea
to maintain the influent ammonia concentration around 55 mg/L as nitrogen. Sodium
acetate was added to maintain the influent COD around 450 mg/L and Sodium
bicarbonate was added to maintain the pH in the aerobic zone around 7. The system was
operated at MCRTs of 1.7, 1.0 and 0.3 days with the operating temperature around 12 C.
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