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Information Journal Paper

Title

DESIGN, INSTALLATION AND EFFICIENCY OF A MECHANICAL AGITATOR (PADDLE MIXER) SPECIFIED FOR BIOGAS SYSTEM (CHINESE'S MODEL)

Pages

  19-26

Abstract

 In this research a fixed- dome BIOGAS unit (Chinese's model) with a capacity of 1.8 m3 gas/day and 50 days retention time was designed and installed. The diameter of the hemispherical digester was 3 meters which was built with masonry material (brick, cement, sand). In this unit, digested slurry will go out through a channel with dimensions of 1.35* 0.65,* 1.25 m. by oneness of an easy technology a kind of MECHANICAL AGITATOR (Paddle mixer) was designed and installed on the plant. The unit was loaded daily with 40 kg cow manure and vegetable residue during 4 weeks. The amount of BIOGAS production after mixing the slurry was measured via dry gas-meter in the end of each week. After mixing the slurry by designed agitator the average of BIOGAS production increased about 42%. A water trap was used for eliminating the water vapor; furthermore the amount of BOD5 and COD in the anaerobic digester reduced to 90.2% and 89.2% respectively, and the average of pH for digested slurry was measured about 7.5. It should be mentioned that pressure of generated BIOGAS was about 25 cm H2O during four weeks.

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    APA: Copy

    OMRANI, GH., SAFA, M., & GOLBABAEI, FARIDEH. (2007). DESIGN, INSTALLATION AND EFFICIENCY OF A MECHANICAL AGITATOR (PADDLE MIXER) SPECIFIED FOR BIOGAS SYSTEM (CHINESE'S MODEL). JOURNAL OF ENVIRONMENTAL STUDIES, 32(40), 19-26. SID. https://sid.ir/paper/2895/en

    Vancouver: Copy

    OMRANI GH., SAFA M., GOLBABAEI FARIDEH. DESIGN, INSTALLATION AND EFFICIENCY OF A MECHANICAL AGITATOR (PADDLE MIXER) SPECIFIED FOR BIOGAS SYSTEM (CHINESE'S MODEL). JOURNAL OF ENVIRONMENTAL STUDIES[Internet]. 2007;32(40):19-26. Available from: https://sid.ir/paper/2895/en

    IEEE: Copy

    GH. OMRANI, M. SAFA, and FARIDEH GOLBABAEI, “DESIGN, INSTALLATION AND EFFICIENCY OF A MECHANICAL AGITATOR (PADDLE MIXER) SPECIFIED FOR BIOGAS SYSTEM (CHINESE'S MODEL),” JOURNAL OF ENVIRONMENTAL STUDIES, vol. 32, no. 40, pp. 19–26, 2007, [Online]. Available: https://sid.ir/paper/2895/en

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