DETERMINING THE EFFICIENCY OF WWTP IN KHOY POWER PLANT AND IMPROVING PHOSPHORUS REMOVAL BY ANOXIC-OXIC PROCESS

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AGHANEZHAD M.; MESDAGHINIA A.R.; VAEZI F.

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Paper Information

Journal: IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT Year:2009 | Volume:2 | Issue:1 (3) Page(s): 66-75

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Title

DETERMINING THE EFFICIENCY OF WWTP IN KHOY POWER PLANT AND IMPROVING PHOSPHORUS REMOVAL BY ANOXIC-OXIC PROCESS

Author(s)

AGHANEZHAD M. | MESDAGHINIA A.R. | VAEZI F. | Issue Writer Certificate

Keywords

WASTEWATER TREATMENTQ2

BIOLOGICAL PHOSPHORUS REMOVALQ3

ANOXIC/OXIC PROCESSQ3

KHOY POWER PLANTQ3

Abstract

Backgrounds and Objectives: Now a days modified activated sludge ways are used for standard removing nutrient substances from waste water that is named Enhanced BIOLOGICAL PHOSPHORUS REMOVAL One of the most suitable ways is Anoxic-Oxic (A/O) process. The goal of this research is investigation and solving existing problems of KHOY POWER PLANT (P.P) waste water treatment plant (WWTP) and optimizing of phosphorus removal in it.Materials and Methods: This research is done full scale in this treatment plant. The treatment plant was operating with extended aeration process, and some problems had, so in the first stage with in investigation of total efficiency, problems and their reasons determined. In the second stage after operational modifications existing problems was solved and real efficiency of treatment plant particularly for phosphorus (P) removal determined. In the third stage changes, system converted to A/O process and new system was tested with Changing parameters like food/microorganism (F/M), return sludge ratio (RAS) and sludge retention time (SRT).Results: In the first stage the most important problems were over concentration of BOD, TSS, and P in effluent of treatment plant and overgrows of alga observed in parts of treatment plant and effluent receiving conduit. The main reason of high concentration of P was considered releasing of sludge. In the second stage operating condition modification efficiency of P removal increased from 50 to 62 percent. In the end of third stage value of P removal reached to %82 and the most suitable of anoxic contact time was determined 3 to 4 hours, SRT terry day and F/M ratio o.12, that the most effective change has been the decrease of SRT to three days.Conclusion: Adjusting of operating factors like SRT, RAS, sludge processing way in WWTP can increase P removal in them with in total efficiency remaining, such as in this case it was %12. In waste water treatment particularly for P removal the A/O process is suitable so in this project its effect on P removal efficiency has been %20.

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APA: Copy

AGHANEZHAD, M., MESDAGHINIA, A.R., & VAEZI, F.. (2009). DETERMINING THE EFFICIENCY OF WWTP IN KHOY POWER PLANT AND IMPROVING PHOSPHORUS REMOVAL BY ANOXIC-OXIC PROCESS. IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT, 2(1 (3)), 66-75. SID. https://sid.ir/paper/145981/en

Vancouver: Copy

AGHANEZHAD M., MESDAGHINIA A.R., VAEZI F.. DETERMINING THE EFFICIENCY OF WWTP IN KHOY POWER PLANT AND IMPROVING PHOSPHORUS REMOVAL BY ANOXIC-OXIC PROCESS. IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT[Internet]. 2009;2(1 (3)):66-75. Available from: https://sid.ir/paper/145981/en

IEEE: Copy

M. AGHANEZHAD, A.R. MESDAGHINIA, and F. VAEZI, “DETERMINING THE EFFICIENCY OF WWTP IN KHOY POWER PLANT AND IMPROVING PHOSPHORUS REMOVAL BY ANOXIC-OXIC PROCESS,” IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT, vol. 2, no. 1 (3), pp. 66–75, 2009, [Online]. Available: https://sid.ir/paper/145981/en

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