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KMID : 1171820090240040080
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Journal of Environmental and Sanitary Engineering
2009 Volume.24 No. 4 p.80 ~ p.89
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Decrease of the Hydrogen Sulfide(H₂S) in the Produced Biogas by the Anaerobic Digestion
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Hong Jong-Soon
Kim Jae-Woo
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Abstract
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In the organic waste, food waste is the most difficult controls. In the study, food waste was treatmented to removal only the dockage. To decrease the hydrogen sulfide(H₂S) in the produced biogas, iron chloride put in the anaerobic digester. Respectively treatment quantity of the food waste, content of the methane(CH₄) gas in the biogas, produced gases quantity, put in the quantity of the Iron chloride, pH, TS, Alkalinity, VFA, Ammonia.
The results obtained from the experiment are as follows:
1. The produced biogases quantity/the treatment quantity of the food waste was 83.82～129.41㎥/ton.
2. The content of the hydrogen sulfide(H₂S) in the produced biogas is below of the 500ppm. The iron chloride put in the anaerobic digester. 200～300㎏ of the iron chloride put in the anaerobic digester at the steady-state. 400～850㎏ of the iron chloride put in the anaerobic digester at the unsteady-state.
3. Factor of the operator was the pH: 7.7～8.4, content of mathane: 55～65%.
4. TS(total solid) of the digestor sludge was 17～20%, Alkalinity was 38,500～41,750ppm, VFA(Volatile Fatty Acids) was 2,800～2,420ppm, Ammonia was 4,300～3,650ppm.
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KEYWORD
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Anaerobic digester, Biogas, Food waste, Hydrogen sulfide, Iron chloride
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