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Results: Energy Consumption1.57 72HP/1,000 Cubic Feet1.20.90.60.3222355122223361555636NC Water AWWA JAM WEA 2010 20110Submersible MixersHyperboloidLargeBubbleVerticalTurbineMixers1. “Mixing Things Up.” Treatment Plant Operator. (Wray 2012).2. “Invent Mixer Evaluation Technical Memorandum.” Boyle. (Cliburn 2008).3. “The Fine Line Between Thorough Mixing and Energy Consumption.” (Oton et al 2009).4. “Evaluation of Energy Conservation Measures.” EPA. (USEPA 2010).5. “A Comparative Analysis of a BioMix System and a Submersible Propeller Mixer”. Clifford W. Randall and William O.Randall. (Randall 2010).6. TZO WRF Mixing Alternatives Study. Hazen and Sawyer. July 2012.7. Metcalf & Eddy, “Wastewater Engineering Treatment and Reuse.” (Metcalf 2003).
Results: Large Bubble Mixing in BNR ApplicationsTreatment Plant Mixing Manufacturer / Status Activated Sludge Process Total Mixing Volume(mg)Mauldin Road WWTP, Greenville,SCF. Wayne Hill WRC, GwinnettCounty, GA *South Granville (NC) WASAWWTPBioMix (EnviroMix) A 2 /O 0.13BioMix (EnviroMix) 5 – Stage Bardenpho 0.81Bids on 10/11/12 5 – Stage Bardenpho 2.70Mount Pleasant (SC) CenterStreet WWTPVillage Creek WWTP Plant 001,Jefferson County, ALVillage Creek WWTP Plant 002,Jefferson County, ALValley Creek WWTP, JeffersonCounty, ALBioMix (EnviroMix) MLE 0.38Design is complete. Project ison hold.Design is complete. Project ison hold.Technical Memoranda complete.Detailed design is on hold.Activated sludge withupstream anoxic selector.Activated sludge withupstream anoxic selector.Activated sludge withupstream anoxic selector.2.02.60.7*Working on extension across all 10 trains in both anaerobic and anoxic zones.NC Water AWWA JAM WEA 2010 2011
Page 1 and 2: Mixing Alternatives Evaluation and
Page 3: AgendaI. Why mix in BNR basins?II.
Page 8 and 9: Jet MixkLa SystemsTZO WRF Mixing Pu
Page 10 and 11: Hyperboloid Mixing—Pilots and Ins
Page 12 and 13: Big Bubble Mixing§ Components:§ C
Page 14 and 15: Big Bubble MixingNozzlesAirHeaderAc
Page 16 and 17: Cost Evaluation Assumptions§ All c
Page 18 and 19: Results: Net Present Worth$14,000,0
Page 22 and 23: ReferencesNC Water AWWA JAM WEA 201
Page 24 and 25: Water JAM 2010 2011Questions

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