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Determination of Bio-decay Coefficient of Disposed Activated Sludge from Wastewater Treatment Plant in Medical Assembly of Mosul City | ||
| Al-Rafidain Engineering Journal (AREJ) | ||
| Article 5, Volume 19, Issue 2, 2011, Pages 28-37 PDF (0 K) | ||
| DOI: 10.33899/rengj.2011.27039 | ||
| Author | ||
| Ahmed Y. Shehab | ||
| Abstract | ||
| Abstract This research, has dealt with determination of bio-decay coefficient of activated sludge disposed from wastewater treatment plant of medical assembly in Mosul city. four bench scale reactors were used of 2.25 liter capacity for each as aerobic digestion units. Throughout the operation period which lasted for a month temperature was controlled and it was (15, 20, 25, 30) ċ in the first second third and fourth reactor respectively, the bio-decay coefficients was found as (kd15=0.02, kd20=0.03, kd25=0.04, kd30=0.05) d-1 , while the temperature constant (θ) was (1.059). Also the results showed that the required periods for aerobic digestion process to reduce 50% of biomass concentration in the reactors at digestion temperature (15, 20, 25, 30) ċ were (17, 7, 5, 4) days respectively. | ||
| Keywords | ||
| Key Words; aerobic digestion; sludge disposal; bio; decay coefficients | ||
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