Biomass Bioaugmentation in a Single-Stage Nitritation-Anammox - - PowerPoint PPT Presentation
UNIVERSITY OF ARIZONA Water & Energy Sustainable Technology Center HEADER TEXT Biomass Bioaugmentation in a Single-Stage Nitritation-Anammox Reactor for Mainstream Deammonification Jim Field 1 , Jeff Prevatt 2 , Guangbin Li 1 and Reyes
UNIVERSITY OF ARIZONA
Water & Energy Sustainable Technology Center
Partners Funding
Award#1705671 1, Department of Chemical and Environmental Engineering, University of Arizona 2, Pima County Regional Wastewater Reclamation Department (PCRWRD)
guangbinli@email.arizona.edu
UNIVERSITY OF ARIZONA
Water & Energy Sustainable Technology Center
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mineralization assimilation
nitrification-denitrification
Nitrification: Denitrification:
NO3
64 g O2 / mol N 40 g COD/ mol N
AOB NOB
UNIVERSITY OF ARIZONA
Water & Energy Sustainable Technology Center
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mineralization assimilation
Discovered in Late 1980’s in The Netherlands
Simplified Stoichiometry
ammonia nitrate dinitrogen gas
Anaerobic Ammonium Oxidation
Year 1995 2015 Full scale installation Scientific publications 120 1,400
Lackner et al., 2014
UNIVERSITY OF ARIZONA
Water & Energy Sustainable Technology Center
NH4
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(100% N) 57% flow 43% flow 57% less O2
no O2 needed for anammox Nitritation Anammox
N2 89% N NO3
AOB
NO2
for anammox
No COD
UNIVERSITY OF ARIZONA
Water & Energy Sustainable Technology Center
Wastewater Treated Effluent Aeration Mixer
Media
NO2
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DO NO2
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N2
The ANITA Mox is based on developing an Anammox biofilm on a plastic carrier material in a Moving-Bed Biofilm Reactor (MBBR) A variant of the ANITA Mox process is to integrate suspended activated sludge (A/S) biomass in the process to help catalyze the PN by AOB. (IFAS)
UNIVERSITY OF ARIZONA
Water & Energy Sustainable Technology Center
Upper limit Lower limit
pH-DO Control strategy
AOB consume ALK vs. Anammox generate ALK Low DO for AOB & High DO for NOB
Air pH
Phase Purpose Influent Ammonium-N I Startup (unstable influent quatity) Centrate 300-1600 ppm II Sidestream I: MBBR Centrate 1000 ppm III Sidestream II: MBBR and IFAS Centrate 1000 ppm IV Mainstream: MBBR and IFAS Mainstream 40 ppm
Operational Plan
pH: upper limit = 7.2 and lower limit = 6.6
UNIVERSITY OF ARIZONA
Water & Energy Sustainable Technology Center
Influent pH = 7.5
Current Nitrogen Loading Rate (NLR): 1.0 g N/L reactor/day
UNIVERSITY OF ARIZONA
Water & Energy Sustainable Technology Center
The UASB is based on Anammox biomass forming compact granular sludge with high specific activity.
Sludge Bed
AOB: Ammonium oxidizing bacteria AOB: Ammonium oxidizing archaea Treated Effluent Centrate/Mainstream WW Aeration Recirculation Three-phase separator Air N2 Granule
UNIVERSITY OF ARIZONA
Water & Energy Sustainable Technology Center
Phase Purpose Influent Ammonium-N Nitrite-N Total-N I Startup Synthetic 80-200 ppm 90-225 ppm 170-425 ppm II Sidestream I: Anammox Synthetic 200-480 ppm 225-540 ppm 425-1000 ppm III Sidestream II: PN/A Synthetic 1000 ppm 0 ppm 1000 ppm IV Sidestream III: PN/A Centrate 1000 ppm 0 ppm 1000 ppm V Mainstream: PN/A Mainstream 40 ppm 0 ppm 40 ppm
Operational Plan
Control strategy in Anammox Stage pH vs. Anammox Activity pH vs. Anammox Growth
Effect of pH on the anammox activity of a granular enrichment culture (●) and a suspended enrichment culture (○) Normalized Anammox Activity (NAA, %) Effect of pH on the anammox growth rate
HEPES: 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid
UNIVERSITY OF ARIZONA
Water & Energy Sustainable Technology Center
Influent pH = 7.7
HRT = 0.25 day SRT = 230 day ALK = 800 mg/L as CaCO3 Nitrogen Loading Rate (NLR) NLRv = 2.8 g N/L reactor/day NLR = 0.5 g N/g VSS/day DO interruption (> 6 mg/L) Loading Shock (TN > 2000 mg/L) pH interruption (> 8.0)
UNIVERSITY OF ARIZONA
Water & Energy Sustainable Technology Center
PARTNERS FUNDING
Collaborative Research: WERF: GOALI (##1705674)
Acknowledgement
Jeff Prevatt
Steve King Jack Parker Jeffrey Bliznick Mallory Rae McMurray Joleen Maile Iwako Liftee Shiroma
Jesus Alejandra Fraijo Arce
Jacob Smutzer