EXPERIMENTAL STUDIES ON THE DYNAMICS OF A DASB BIOREACTOR

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KHONSARI M.; ROUSTAAZAD R.; HASHEMIAN S.J.A.D.

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Journal: INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN) Year:2001 | Volume:11 | Issue:6 Page(s): 1-12

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Title

EXPERIMENTAL STUDIES ON THE DYNAMICS OF A DASB BIOREACTOR

Author(s)

KHONSARI M. | ROUSTAAZAD R. | HASHEMIAN S.J.A.D. | Issue Writer Certificate

Keywords

UASB BIOREACTORQ4

ANAEROBIC SLUDGEQ4

METHANOGENIC ACTIVITYQ4

SEPARATIONQ4

WASTEWATERQ4

Abstract

Dynamics of a 400 m3 industrial scale UASB BIOREACTOR during the period of the start-up, 80% of the bioreactor was filled by a two-year old ANAEROBIC SLUDGE with a concentration of 40 g/L and strong METHANOGENIC ACTIVITY while the rest was filled by a WASTEWATER having a COD value of 1000 mg/I. Two loads of 0.7 and 1.5 kg COD/m3-d at upflow speeds of 0.56 and 0.77 m/h and feed to microorganism (F/M) ratios of 0.1 and 0.19 kg COD/kg VSS-d were fed to the system. Concentration of the feed fluctuated between 1000 and 1200 mg COD/L. Due to strong METHANOGENIC ACTIVITY, a serious sludge wash-out up to 60% was observed at the begining. Moreover, because of the low ambient temperature at cold season,. the temperature of the bioreactor fell from 21oc to 10oc degrees centigrade, thereby, a heating system was found to be necessary.Despite the encountered problems, sludge seperation was achieved properly and at the lower part of the vessel, a relatively thick sludge was developed. At that condition, treatment of a feed with a pH value of 6 was carried out easily and a 60% reduction of COD was achieved. A four-day interruption in the operation due to technical failures caused a sludge compression near the bottom of the reactor and made a serious drawback on the bioreactor performance.

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APA: Copy

KHONSARI, M., ROUSTAAZAD, R., & HASHEMIAN, S.J.A.D.. (2001). EXPERIMENTAL STUDIES ON THE DYNAMICS OF A DASB BIOREACTOR. INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN), 11(6), 1-12. SID. https://sid.ir/paper/65504/en

Vancouver: Copy

KHONSARI M., ROUSTAAZAD R., HASHEMIAN S.J.A.D.. EXPERIMENTAL STUDIES ON THE DYNAMICS OF A DASB BIOREACTOR. INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN)[Internet]. 2001;11(6):1-12. Available from: https://sid.ir/paper/65504/en

IEEE: Copy

M. KHONSARI, R. ROUSTAAZAD, and S.J.A.D. HASHEMIAN, “EXPERIMENTAL STUDIES ON THE DYNAMICS OF A DASB BIOREACTOR,” INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN), vol. 11, no. 6, pp. 1–12, 2001, [Online]. Available: https://sid.ir/paper/65504/en

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