MINIMIZATION OF EXCESS SLUDGE IN ACTIVATED SLUDGE SYSTEMS

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MOUMENI S.A.R.; MIRBAGHERI S.A.

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Journal: WATER AND WASTEWATER Year:2006 | Volume:16 | Issue:4 (56) Page(s): 54-61

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Information Journal Paper

Title

MINIMIZATION OF EXCESS SLUDGE IN ACTIVATED SLUDGE SYSTEMS

Author(s)

MOUMENI S.A.R. | MIRBAGHERI S.A. | Issue Writer Certificate

Keywords

MINIMIZATIONQ4

DISSOLVED OXYGEN EXCESS SLUDGEQ3

ACTIVATED SLUDGE PROCESSQ4

Abstract

The disposal of excess sludge from wastewater treatment plant represents a rising challenge in ACTIVATED SLUDGE PROCESSes. Hence, the MINIMIZATION of excess sludge production was investigated by increasing the dissolved oxygen in aeration basin. Units of the pilot include: Primary sedimentation tank, aeration basin, secondary sedimentation tank, and return sludge tank. Volume of aeration basin is 360 l and influent flow rate is 90 L/h. Influent of pilot is taken from effluent of grit chamber of Isfahan's North Wastewater treatment plant. The experiments were done on different parts of pilot during the 5 month of study. Results show that increase of dissolved oxygen in aeration tank affect on decrease of excess sludge. Increase of dissolved oxygen from 0.5 to 4.5 mg/L resulted in 25% decrease of excess sludge. Variation of dissolved oxygen affect on settle ability of sludge too. By increase of dissolved oxygen, SVI decreased and then increased. Value of 1-3 mg/L was the adequate range of dissolved oxygen by settles ability of sludge and optimum range was 2-2.5 mg/L. It could be concluded by increasing of dissolved oxygen up to of 3 mg/L, sludge settle ability significant decreased.

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APA: Copy

MOUMENI, S.A.R., & MIRBAGHERI, S.A.. (2006). MINIMIZATION OF EXCESS SLUDGE IN ACTIVATED SLUDGE SYSTEMS. WATER AND WASTEWATER, 16(4 (56)), 54-61. SID. https://sid.ir/paper/104017/en

Vancouver: Copy

MOUMENI S.A.R., MIRBAGHERI S.A.. MINIMIZATION OF EXCESS SLUDGE IN ACTIVATED SLUDGE SYSTEMS. WATER AND WASTEWATER[Internet]. 2006;16(4 (56)):54-61. Available from: https://sid.ir/paper/104017/en

IEEE: Copy

S.A.R. MOUMENI, and S.A. MIRBAGHERI, “MINIMIZATION OF EXCESS SLUDGE IN ACTIVATED SLUDGE SYSTEMS,” WATER AND WASTEWATER, vol. 16, no. 4 (56), pp. 54–61, 2006, [Online]. Available: https://sid.ir/paper/104017/en

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