ANALYSIS AND DETERMINATION OF SECONDARY SLUDGES NOT BEING SETTLED IN ZARGANDEH TREATMENT PLANT

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GHAHERI ABAS; AZIMI A.A.; SHAGHAGHI GH.R.

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Journal: INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN) Year:2001 | Volume:12 | Issue:2 Page(s): 31-39

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Title

ANALYSIS AND DETERMINATION OF SECONDARY SLUDGES NOT BEING SETTLED IN ZARGANDEH TREATMENT PLANT

Author(s)

GHAHERI ABAS | AZIMI A.A. | SHAGHAGHI GH.R. | Issue Writer Certificate

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Abstract

One of the problems that often happens in activated sludge systems is poor settling and compactibility of sludge in secondry clarifiers. Poor settling of sludge causes decreasing quality of treated wastewater and increasing cost of sludge treatment.In this project, causes of poor settling and compactibility of sludge was determined by experimental method in Zargandeh wastewater treatment plant (Tehran). In the first stage, sludge settling characteristics were determined by caculating sludge volume index (SVI). Because one of the causes of sludge rising and floating is denitrification in the second stage, denirtification phenomenon was investingated by measurment of nitrogen in varius compounds. In the third stage, sludge flocs was investigated by microscope for determining flocs structure and bulking phenomenon and consequently, identificating filamentous bacteria. The dominat bacteria that cause bulking in Zargandeh wastewater treatment plant is M. parvicella and secondary bacteria is type 0092. The growth of these bacteria probably was arised from low F/M, low DOES and completely mixed hydroulic regime of the aeration basin. In the fourth stage, design criteria and operation parameters of the treament plant were controled. The comparsion of these data have shown that this system has hydroulic over load.

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APA: Copy

GHAHERI, ABAS, AZIMI, A.A., & SHAGHAGHI, GH.R.. (2001). ANALYSIS AND DETERMINATION OF SECONDARY SLUDGES NOT BEING SETTLED IN ZARGANDEH TREATMENT PLANT. INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN), 12(2), 31-39. SID. https://sid.ir/paper/65873/en

Vancouver: Copy

GHAHERI ABAS, AZIMI A.A., SHAGHAGHI GH.R.. ANALYSIS AND DETERMINATION OF SECONDARY SLUDGES NOT BEING SETTLED IN ZARGANDEH TREATMENT PLANT. INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN)[Internet]. 2001;12(2):31-39. Available from: https://sid.ir/paper/65873/en

IEEE: Copy

ABAS GHAHERI, A.A. AZIMI, and GH.R. SHAGHAGHI, “ANALYSIS AND DETERMINATION OF SECONDARY SLUDGES NOT BEING SETTLED IN ZARGANDEH TREATMENT PLANT,” INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN), vol. 12, no. 2, pp. 31–39, 2001, [Online]. Available: https://sid.ir/paper/65873/en

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