EFFECTS OF PHASE-SEPARATION IN ANAEROBIC-DIGESTION ON DIFFERENT SUBSTRATES

被引:25
作者
JEYASEELAN, S [1 ]
MATSUO, T [1 ]
机构
[1] UNIV TOKYO,DEPT URBAN & SANIT ENGN,BUNKYO KU,TOKYO 113,JAPAN
关键词
ACID FORMERS; DIGESTION EFFICIENCY; METHANE FORMERS; SUBSTRATES; 2-PHASE ANAEROBIC DIGESTION; VOLATILE ACIDS; WASTE STABILIZATION;
D O I
10.1016/0273-1223(95)00417-L
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Treatment characteristics of two different substrates were investigated by two-phase anaerobic digestion at 20 degrees C. One substrate contained 87 percent carbohydrates and proteins and the other 94 percent carbohydrates and lipids. The anaerobic system consisted of a completely mixed reactor for hydrolysis and acidogenesis reactions, and an upflow filter for methanogeneous conversions. The experiments showed that the best phase separation occurs with 4 to 8 hours of detention times within the acid reactor. A single anaerobic system with upflow anaerobic filter alone for the same total detention times at the same substrate concentrations was operated for comparison. The results proved that two-phase digestion systems have higher digestion efficiencies than corresponding single-phase digestion systems. For substrates with more lipids the digestion efficiencies were very much greater.
引用
收藏
页码:153 / 162
页数:10
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