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Anaerobic Treatment of Food Waste Leachate for Biogas Production Using a Novel Digestion System
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  • Journal title : Environmental Engineering Research
  • Volume 17, Issue 1,  2012, pp.41-46
  • Publisher : Korean Society of Environmental Engineering
  • DOI : 10.4491/eer.2012.17.1.041
 Title & Authors
Anaerobic Treatment of Food Waste Leachate for Biogas Production Using a Novel Digestion System
Lim, Bong-Su; Kim, Byung-Chul; Chung, In;
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In this study, the performance of new digestion system (NDS) for the treatment of food waste leachate was evaluated. The food waste leachate was fed intermittently to an anaerobic reactor at increasing steps of 3.3 L/day (hydraulic retention time [HRT] = 30 day), 5 L/day (HRT = 20 day), and finally 10 L/day (HRT = 10 day). In the anaerobic reactor, the pH and alkalinity were maintained at 7.6 to 8.2 and 8,940-14,400 mg/L, respectively. Maximum methane yield determined to be 0.686L /g volatile solids (VS) containing HRT over 20 day. In the digester, 102,328 mg chemical oxygen demand (COD)/L was removed to produce 350 L/day (70% of the total) of biogas, but in the digested sludge reduction (DSR) unit, only 3,471 mg COD/L was removed with a biogas production of 158 L/day. Without adding any chemicals, 25% of total nitrogen (TN) and 31% of total phosphorus (TP) were removed after the DSR, while only 48% of TN and 32% of TP were removed in the nitrogen, phosphorus, and heavy metals (NPHM) removal unit. Total removal of TN was 73% and total removal of TP was 63%.
Anaerobic digestion;Biogas production;Food waste leachate;New digestion system;
 Cited by
2단 혐기성소화조의 슬러지 반송율 변화를 통한 Bio-Gas 생산 증대,권구호;이태우;정용준;민경석;

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