Effect of Loading Rate on Acidogenic Fermentation of Domestic Waste Sludge

산발효에 있어서 하수슬러지의 유입부하율의 영향

  • 엄태규 (경성대학교 공과대학 건설환경공학부) ;
  • 한동엽 (경성대학교 공과대학 건설환경공학부)
  • Received : 2003.08.21
  • Accepted : 2004.01.16
  • Published : 2004.02.15

Abstract

The purpose of this research was to investigate loading rate of influent for acidogenic fermentation. Laboratory batch experiments were conducted, at $35^{\circ}C$, HRT 18hr, pH 6 and used 3.5L reactor. Loading rate of influent was varied 2.0 to 4.0g VSS/L, TOA concentration is decreased according to increasing loading rate Over 2.5g VSS/L. When loading rate is 2.0g VSS/L, hydrolysis percentage show the maximum value of 87%. Most of SCFA is consist of HAc, HPr, I-HBu and MBu. HAc concentration is 5,233mg/L in the 2.0g VSS/L condition. So, for this study, we think that limiting loading rate is 2.5g VSS/L. SCFA species was investigated to HAc, HPr, I-HBu and n-HBu during our studying. HAc/SCFA ratio is about 89.3%, SCFA production rate is highest to $1,104mg\;COD/L/d{\cdot}gPCOD$ for 2.0g VSS/L loading rate.

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