Influence of cycle time on sewage treatment using sequencing batch reactor

Thomas, M.V. and Agamuthu, Pariatamby (2003) Influence of cycle time on sewage treatment using sequencing batch reactor. Malaysian Journal of Science, 22 (1). pp. 55-64. ISSN 1394-3065,

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A Sequencing Batch Reactor (SBR) was tested for performance under two different cycle times - 8 hours per cycle and 6 hours per cycle. The effluent quality after treatment was compared against specified effluent quality limits to determine the plant’s performance in terms of Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Suspended Solids (SS), ammonia-nitrogen, nitrate-nitrogen, and phosphorus. The reduction of BOD, COD, SS and nitrate-nitrogen content in the SBR was not significantly affected by the cycle time — the levels under both time cycles complied with the effluent limits imposed. In fact, the SBR plant provides excellent treatment performance for conventional parameters of BOD, COD and SS, as well as nitrate-nitrogen at both 6-hour and 8-hour cycles. However, the study showed that removal efficiency of ammonia-nitrogen and phosphorus was better using the 8-hour cycle, compared to the 6-hour cycle. Nevertheless, it is has been established that the SBR would require a stabilisation period of at least three months for optimum phosphorus removal. Data obtained from this study is expected to be useful in the selection of the optimal cycling times in SBR for tropical conditions.

Item Type: Article
Additional Information: Institute of Biological Sciences, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Sequencing Batch Reactor (SBR), cycle time, sewage, treatment
Subjects: Q Science > QH Natural history > QH301 Biology
Depositing User: Miss Malisa Diana
Date Deposited: 07 Mar 2013 02:50
Last Modified: 27 Apr 2021 07:59

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