Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Assessment of TOC Analysis Method for Livestock Manure including High Strength Solid Organics

고농도 고형 유기물질을 포함하는 가축 분뇨의 TOC 분석방법 평가

  • Lee, Yunhee (Department of Railroad, Civil & Environmental Engineering, Woosong University) ;
  • Oa, Seong-Wook (Department of Railroad, Civil & Environmental Engineering, Woosong University) ;
  • Kim, Yongseok (National Institute of Environmental Research) ;
  • Park, Jihyung (National Institute of Environmental Research)
  • Received : 2014.07.03
  • Accepted : 2014.08.22
  • Published : 2014.09.30
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Abstract

Two different methods for TOC (Total Organic Carbon) analysis of livestock manure including high strength solid organics were evaluated. Firstly, an analyzing method by dilution after pre-treated by Ultrasonicator and 100 mesh sieve for homogenization was defined as TOC 1; and secondly method divided by particulate organic carbon (POC) and dissolved organic carbon (DOC) was defined as TOC 2. 116 samples collected from 56 farms were analyzed in TOC1, TOC2, BOD and VSS. TOC1 method showed higher accuracy at less than 30,000 mg/L of TOC while TOC2 method presented significant reliability at over that concentration. Regarding to the sample with the same VSS concentration, the correlation between TOC 2 and VSS (${\rho}$: 0.806) was slightly higher than that between TOC 1 and VSS (${\rho}$: 0.784), resulted from a relatively low loss of solids and a low error probability (dilution and homogenization effects) in the analyzing procedures. In addition, the reliability between POC and VSS in TOC2 was high and the POC was about 4.4 fold that of the VSS. Consequently, TOC 2 without dilution effect was assessed as a proper method to increase the analyzing accuracy of swine manure including high solid organics.

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References

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