Comparing the responses of nitrifiers to differing ammonia loadings

Return active sludge from the Danville Sanitary plant (Danville, IL) was fed 10 mg NH3-N/L per cycle of separated swine manure to allow the biomass to adapt to a new influent in a sequencing batch reactor. The biomass was then separated into three reactors. A control reactor was exposed to 10 mg NH3-N/L . A medium stress reactor was exposed to ammonia loading increasing from 10 mg NH3-N/L to 120 mg NH3-N/L. A final high stress reactor was exposed to the same increasing loading as the medium stress reactor with periodic shock loads. Biomass was regularly taken from each reactor and batch respirometer tests were performed with initial ammonia loading varying from 20 mg NH3-N/L to 550 mg NH3-N/L. Modifications to Activated Sludge Model 3 (ASM3) were used to attempt to model the OUR curves generated, but the curves could not be fitted. Despite the inability to model the OUR curves, the biomass from each reactor was found to have qualitatively different OUR curves from each other.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Environ Engr in Civil Engr

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Anderson, Blake W.

Contributors dc:contributor

• Morgenroth, Eberhard F.

• Nitrifier Modeling
• Ammonia acclimation

Statement dc:rights

• Copyright 2010 Blake W. Anderson

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/18259

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/18259