DETERMINATION OF DESIGN CRITERIA FOR UASB REACTORS AS A WASTEWATER PRETREATMENT SYSTEM IN TROPICAL SMALL COMMUNITIES

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AZIMI A.A.; ZAMANZADEH M.

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Journal Paper

Paper Information

Journal: INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST) Year:2004 | Volume:1 | Issue:1 Page(s): 51-58

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Title

DETERMINATION OF DESIGN CRITERIA FOR UASB REACTORS AS A WASTEWATER PRETREATMENT SYSTEM IN TROPICAL SMALL COMMUNITIES

Author(s)

AZIMI A.A. | ZAMANZADEH M. | Issue Writer Certificate

Keywords

UASB REACTOR

HRT

SMALL COMMUNITIES

WASTEWATER PRETREATMENT

TROPICAL REGIONS

Abstract

A pilot scale study was set up to investigate the principle design parameters of upflow anaerobic sludge blanket (UASB) reactors for treating wastewater of SMALL COMMUNITIES in the TROPICAL REGIONS of Iran. A steel pipe with a diameter of 600 mm and a height of 3.6 m was used as the reactor in which a digestion and a 3-phase separator element had a volume of 0.848 and 0.17 m3 respectively. During this study, which lasted for 203 days, two distinct phases were carried out according to the ambient temperature. The temperature of the wastewater entering the reactor was naturally ranged from 22 to 26 0C and no heat exchanger was used. The hydraulic retention times including 2, 4, 6, 8, and 10 hours with various loading rates of 0.95 to 5.70 kg COD/m3/day for colder period and from 1.35 to 6.40 kg COD/m3/day for warmer period were examined. On the basis of the results the optimal hydraulic retention time for warmer period with a 2.20 kg COD/m3/day organic loading rate was 6 hours which BOD5, COD and TSS removal efficiency were 71, 63 and 65 percent respectively. During the colder period the removal ratio of BOD5, COD and TSS with an optimal hydraulic retention time of 8 hours and organic loading rate of 1.22 kg COD/m3/day were 54, 46 and 53 percent respectively.

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References

DISTRIBUTION AND CHANGE OF MICROBIAL ACTIVITY IN COMBINED UASB AND AFB REACTORS FOR WASTEWATER TREATMENT

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APA: Copy

AZIMI, A.A., & ZAMANZADEH, M.. (2004). DETERMINATION OF DESIGN CRITERIA FOR UASB REACTORS AS A WASTEWATER PRETREATMENT SYSTEM IN TROPICAL SMALL COMMUNITIES. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), 1(1), 51-58. SID. https://sid.ir/paper/284865/en

Vancouver: Copy

AZIMI A.A., ZAMANZADEH M.. DETERMINATION OF DESIGN CRITERIA FOR UASB REACTORS AS A WASTEWATER PRETREATMENT SYSTEM IN TROPICAL SMALL COMMUNITIES. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST)[Internet]. 2004;1(1):51-58. Available from: https://sid.ir/paper/284865/en

IEEE: Copy

A.A. AZIMI, and M. ZAMANZADEH, “DETERMINATION OF DESIGN CRITERIA FOR UASB REACTORS AS A WASTEWATER PRETREATMENT SYSTEM IN TROPICAL SMALL COMMUNITIES,” INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY (IJEST), vol. 1, no. 1, pp. 51–58, 2004, [Online]. Available: https://sid.ir/paper/284865/en

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