EFFECTS OF ANAEROBIC REACTION TIME AND SLUDGE AGE ON THE BIOLOGICAL PHOSPHORUS REMOVAL IN SBR

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TORABIAN A.; AMINZADEH B.; NIKIMALEKI M.R.

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Journal: Journal of Environmental Studies Year:2001 | Volume:27 | Issue:Special Issue Page(s): 1-6

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Title

EFFECTS OF ANAEROBIC REACTION TIME AND SLUDGE AGE ON THE BIOLOGICAL PHOSPHORUS REMOVAL IN SBR

Author(s)

TORABIAN A. | AMINZADEH B. | NIKIMALEKI M.R. | Issue Writer Certificate

Keywords

BIOLOGICAL PHOSPHORUS REMOVAL

SEQUENCING BATCH REACTOR

SLUDGE AGE

ANAEROBIC REACTION TIME

WASTEWATER TREATMENT

Abstract

In this research, a pilot consisting of two SEQUENCING BATCH REACTORs (SBR) used to remove phosohorus biologically. Both reactors were in operation in a 12 hours cycle and they were controlled by a computer. The blank one had no primary anaerobic stage and its aeration time was 9.5 hours. The other one had the primary anaerobic stage with no change in the total reaction time (9.5 hours). The average concentration of influent phosphorus and COD in reactors were 7.5 and 800 milligram per litre respectively. In two months periods, the average effeciencies of phosporus removal for the blank reactor and the second reactor with ANAEROBIC REACTION TIMEs of 2,3, and 4.5 hours were 16%, 26%, 64%, and 99% respectively.In the reactor with ANAEROBIC REACTION TIME of 4.5 hours, increasing the SLUDGE AGE from 5 days to 10 days resulted in decreasing of phosphorus removal efficiency from 99% to 87%.In general, the result of this investigation show that the increases of ANAEROBIC REACTION TIME can increase the efficiency of phosphorus removal, because of the prevalence of phosphorus removing microrganisms over other species. Also, the accurate control of additional sludge volume (sludge age) has an appropriate effect on the removal efficiency.

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APA: Copy

TORABIAN, A., AMINZADEH, B., & NIKIMALEKI, M.R.. (2001). EFFECTS OF ANAEROBIC REACTION TIME AND SLUDGE AGE ON THE BIOLOGICAL PHOSPHORUS REMOVAL IN SBR. JOURNAL OF ENVIRONMENTAL STUDIES, 27(Special Issue), 1-6. SID. https://sid.ir/paper/531231/en

Vancouver: Copy

TORABIAN A., AMINZADEH B., NIKIMALEKI M.R.. EFFECTS OF ANAEROBIC REACTION TIME AND SLUDGE AGE ON THE BIOLOGICAL PHOSPHORUS REMOVAL IN SBR. JOURNAL OF ENVIRONMENTAL STUDIES[Internet]. 2001;27(Special Issue):1-6. Available from: https://sid.ir/paper/531231/en

IEEE: Copy

A. TORABIAN, B. AMINZADEH, and M.R. NIKIMALEKI, “EFFECTS OF ANAEROBIC REACTION TIME AND SLUDGE AGE ON THE BIOLOGICAL PHOSPHORUS REMOVAL IN SBR,” JOURNAL OF ENVIRONMENTAL STUDIES, vol. 27, no. Special Issue, pp. 1–6, 2001, [Online]. Available: https://sid.ir/paper/531231/en

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