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Journal of Applied Sciences
  Year: 2010 | Volume: 10 | Issue: 3 | Page No.: 226-230
DOI: 10.3923/jas.2010.226.230
Kinetics Study of Sewage Sludge Treatment by an Aerobic Digestion
Abdurahman H. Nour, Azhary H. Nour, A.P.S. Vissaliny and A.P.V. Rajaletchumy

Abstract:
In this study, a 50 L laboratory scaled Membrane Anaerobic System (MAS) combining ultrafiltration (UF) membrane with anaerobic reactor was used to treat raw sewage sludge. Six steady states were attained as a part of a kinetic study. The three kinetic models (Monod, Contois and Chen and Hashimoto) were successfully fitted. The results of all six steady states were successfully fitted above 98% by Monod, Contois and Chen and Hashimoto. Contois model appeared to be the best at 99.7%. The microbial kinetic constants were Y = 0.74 g VSS g-1 COD and b = 0.20 day-1. The minimum solids retention time, θcmin obtained from the three kinetic models ranged from 5-16.9 days. The k values were in the range of 0.350-0.519 g COD g-1 VSS day and μmax values were between 0.259 and 0.384 day-1. The Solids Retention Time (SRT) decreased from 1250 days to 16.1 days. The methane gas yield was between 0.19 to 0.54 L g-1 COD day-1 when the organic loading rate increased from 0.1 kg COD/m3/day to 10 kg COD/m3/day. The COD removal efficiency was 96.5-99% with HRT of 7.8 days. And the rage of mixed liquor suspended solids was from 12760 to 21800 mg L-1.
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How to cite this article:

Abdurahman H. Nour, Azhary H. Nour, A.P.S. Vissaliny and A.P.V. Rajaletchumy, 2010. Kinetics Study of Sewage Sludge Treatment by an Aerobic Digestion. Journal of Applied Sciences, 10: 226-230.

DOI: 10.3923/jas.2010.226.230

URL: https://scialert.net/abstract/?doi=jas.2010.226.230

 
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