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The effect of ammonia loading on the nitrification kinetic of aerobic baffled continuous biological reactor

Kutty, S.R.M. and Isa, M.H. and Leong, L.C. (2011) The effect of ammonia loading on the nitrification kinetic of aerobic baffled continuous biological reactor. [Citation Index Journal]

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Abstract

The purpose of this study is to determine the degradation rate of ammonia in the modified activated-sludge system through a modified, laboratory scale biological reactor. To achieve this, a modified biological reactor with pre-installed continuous narrow baffle walls operating at extended aeration (SRT = 40 days) was designed to intentionally create a number of complete-mix activated-sludge zones. In order to compare the performance, a control reactor (SRT = 2 days) operating at conventional aeration was created to simulate the conventional activated-sludge process in the domestic STP. After the acclimatization period, the influent ammonia was increased gradually by approximately 15 mg/L and the corresponding effluent ammonia level was monitored. Based on the analysis, the nitrification kinetic of the control and modified reactor was observed to be 0.0823 and 10.321, respectively. The nitrification kinetic of the control reactor was considered as negligible due to the conventional activated-sludge process, which inhibits the growth of nitrifiers. In contrast, the modified reactor has achieved nitrification kinetic of 10.32, due to the narrow baffle walls that increased the overall retention time.

Item Type:Citation Index Journal
Uncontrolled Keywords:ammonia-nitrogen, solid retention time, modified conventional activated-sludge, baffled reactor
Subjects:T Technology > TD Environmental technology. Sanitary engineering
Departments / MOR / COE:Departments > Civil Engineering
ID Code:6485
Deposited By: Assoc Prof Dr Mohamed Hasnain Isa
Deposited On:05 Oct 2011 00:24
Last Modified:19 Jan 2017 08:22

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