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Effect of cycle period and substrate composition on phosphorous removal potential of a laboratory-scale sequencing batch reactor

Author

Listed:
  • Gargi Biswas
  • Anupam Debsarkar
  • Somnath Mukherjee
  • Siddhartha Datta
  • Sunil Kumar
  • Ackmez Mudhoo

Abstract

The performance of a laboratory-scale sequencing batch reactor (SBR) of 20-litre capacity was evaluated for simultaneous removal of soluble COD (SCOD), NH4+–N and phosphorus by changing the compositions and concentrations of substrates under different combinations of REACT period. The total cycle period of 10 h comprised 0.5 h FILL period, 8 h REACT period, 1 h SETTLE period and 0.5 h IDLE/DRAW period with the react period being divided into two combinations of anoxic (A) and aerobic (O) react period namely (4 h + 4 h) (A/O) and (3 h + 3 h + 2 h) (A/O/A). The initial SCOD concentration was kept constant at 2000 mg/l while the initial NH4+–N concentrations were taken as 90 mg/l and 180 mg/l as N tentatively. Results for total phosphorus accumulation capacity indicated that the A/O/A combination was more conducive to total phosphorus uptake at 90.26 mg P/g MLVSS than the A/O combination in the aerobic reaction period which followed the initial 3-h anoxic react period.

Suggested Citation

  • Gargi Biswas & Anupam Debsarkar & Somnath Mukherjee & Siddhartha Datta & Sunil Kumar & Ackmez Mudhoo, 2011. "Effect of cycle period and substrate composition on phosphorous removal potential of a laboratory-scale sequencing batch reactor," International Journal of Environmental Technology and Management, Inderscience Enterprises Ltd, vol. 14(1/2/3/4), pages 252-268.
    • Handle: RePEc:ids:ijetma:v:14:y:2011:i:1/2/3/4:p:252-268
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