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Development of Combined Plant of Biogas and Bio-SRF from Swine Manure Slurry
( Yeon Seok Choi ),( Sang Kyu Choi ),( Seock Joon Kim ),( So Young Han ),( Du Su Jung ),( Tae Han Yoon ),( Ramesh Soysa ) 한국폐기물자원순환학회(구 한국폐기물학회) 2015 한국폐기물자원순환학회 3RINCs초록집 Vol.2015 No.-
An environmental and economical treatment of swine manure is often considered to be big challenge due to its persistent fermentation resistance, which is hard to achieve complete decomposition by anaerobic digestion. Residue of swine manure slurry after fermentation treatment is known to contain still high amount of organic compounds and to cause a disposal problem because those organic wastes are forbidden marine dumping by global regulation in the world. The Swine manure slurry fermentation residue(SMSFR), on the other side, has high energy potential because of its highly leftover organic compounds which can be recovered by other treatment technology. In the present study a new process plant of 40 ton-swine manure a day has been designed to achieve environmental and economical treatment of swine manure, which has combined two process of biogas plant and bio solid refuse fuel(Bio-SRF) plant. CH4 concentration in biogas was analyzed to be 65 %, and LHV 5,525 kcal/m<sup>3</sup> that is high enough to be burnt in general gas burner. The SMSFR was dried and pelletized in the new Bio-SRF plant using that biogas as a dry fuel for vaporizing the high concentration water in SMSFR. About 70 % of total biogas output was supplied for SMSFR drying and the leftover was used for generating electricity in the 250 kW gas engine power generator. The Bio-SRF pellet was analyzed to have a fuel properties, LHV 3,954 kcal/kg, humidity 10%, ash 15.4%, sulfur 0.85% and chlorine 0.68% respectively, that is sufficiently satisfied to Korea Bio-SRF Quality Standard. This new commercial scale swine manure treatment plant has been proven to solve the challenging swine manure treatment problem without ocean dumping. Moreover it showed good synergetic effect of the biogas and Bio-SRF combination plant economically.