6016Lect#9&10ASDesign Spring_2013

6016Lect#9&10ASDesign Spring_2013 - ENV 6016 Spring...

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ENV 6016 Spring 2013 Dr. Randall Activated Sludge Design (Numbers are same as numbers in Table 8-12, page 706) 5. Determine all biokinetic parameters for the min and max temperature 6. Using the maximum growth rate for nitrifiers at the min temperature, determine the minimum SRT. 7. Add factors of safety to determine the design SRT. a. Use maximum daily TKN loading to average TKN. 8. Determine the mass of heterotrophic biomass, and the mass flux [mass/time] of the waste activated sludge (WAS). 9. Assuming the WAS is 12% nitrogen determine the assimilative N removal. a. Calculate the N available for nitrification assuming 100% nitrification (N available = influent N – assimilative N removal). 10. Determine the mass of MLSS due to heterotrophic biomass, debris from endogenous decay, and influent non-biodegradable TSS. 11. Assume an MLSS concentration and calculate the volume of the reactor(s). 12. Determine sludge production and observed yield 13. Determine the oxygen demand 14. Determine if alkalinity addition is required
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  • Spring '13
  • MLSS, max oxygen requirements, Determine sludge production

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