Nitrogen removal from dairy waste using deammonification fueled by fermented dairy manure Jason Beck1, Kevin R. Gilmore1, Katharine Knowlton3, Jactone Arogo Ogejo2 and Nancy G. Love1* Departments of 1Civil - PowerPoint PPT Presentation

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Nitrogen removal from dairy waste using deammonification fueled by fermented dairy manure Jason Beck1, Kevin R. Gilmore1, Katharine Knowlton3, Jactone Arogo Ogejo2 and Nancy G. Love1* Departments of 1Civil

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The objective of this research is to determine the feasibility ... High organics present in dairy waste create increased competition for autotrophic nitrifiers. ... – PowerPoint PPT presentation

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Title: Nitrogen removal from dairy waste using deammonification fueled by fermented dairy manure Jason Beck1, Kevin R. Gilmore1, Katharine Knowlton3, Jactone Arogo Ogejo2 and Nancy G. Love1* Departments of 1Civil


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Nitrogen removal from dairy waste using
deammonification fueled by fermented dairy manure
Jason Beck1, Kevin R. Gilmore1, Katharine
Knowlton3, Jactone Arogo Ogejo2 and Nancy G.
Love1Departments of 1Civil Environmental
Engineering, 2Biological Systems Engineering and
3Dairy Sciences, Virginia Tech, Blacksburg, VA
24061Corresponding Author
Methods
Biowin modelling was used to determine the
initial system configuration and design parameters
  • Fermenter SRT 2 days
  • Nit/Denit SRT 6 days
  • Nit/Denit Aeration 35

System configuration
N2
Cycled Aeration to achieve low DO
Fresh, dairy manure
High VFAs High NH3
Low NO2-, NH3, rCOD
Anaerobic Fermenter
Aerobic/Anoxic Nitritation/Denitritation
  • Lab fermenter results produced a VFA (COD)NH3-N
    ratio of approximately 3 which is sufficient if
    nitritation is achieved

System Operation and Preliminary Data
Wastewater Characteristics
Constituent Municipal Dairy
Ammonia, NH3 N (mg/L) 35 1,500
Total Phosphorus, P (mg/L) 15 300
Organics, COD (mg/L) 910 58,000
1 Cow 60 people in terms of organic loading
Typical treatment is performed with anaerobic
stabilization
NO3-
NO2-
NH3
Influent NH3
Effluent NH3
NDN NO2-
NDN NO3-
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