Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Solubilization of Sewage Sludge by Microwave Pretreatment and Elutriated Acid Fermentation

Microwave를 이용한 하수슬러지의 전처리 특성 및 회분식 세정산발효를 이용한 슬러지 가용화

  • Lee, Won-Sic (Department of Environmental Engineering, Kyungpook National University) ;
  • Hong, Seung-Mo (DAEWOO E&C CO., LTD Institute of Construction Tech.) ;
  • Min, Kyung-Sok (Department of Environmental Engineering, Kyungpook National University)
  • Received : 2006.08.04
  • Accepted : 2006.10.23
  • Published : 2006.11.30
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Abstract

This work elucidates the effects of pretreatment of the sewage sludge from wastewater treatment plant by microwave irradiation on elutriated acid fermentation. These experiments typically fell into two process; pretreatment as microwave irradiation and elutriated acid fermentation for hydrolysis and acidification as main process of primary sludge. The results of maximum solubilization rate of B, D primary and secondary sludge were 0.042, 0.086 and 0.15 gSCODprod./gICODin and the optimum irradiation time of microwave on 2,450 MHz and 900 W were 5 min. for primary sludge and 7 min. for secondary sludge. From batch tests on elutriated acid fermentation that was used the pretreated primary sludge as microwave, the optimum pH and HRT (hydraulic retention time) were 7 and 5 days at $35^{\circ}C$ condition.

Keywords

Acknowledgement

Supported by : 환경부

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