CAJ | 학술논문

　　在发酵原料C/N＝25～30，T＝36℃的条件下，研究20％，15％，10％，5％和2．5％等5种干物质浓度对牛粪秸秆混合干式厌氧发酵产沼气性能的影响。实验结果表明：发酵前30 d 为产气高峰期，同时发酵渗滤液中的VFA浓度也较高；干物质浓度增加时，产气量波动增大，渗滤液中碱度和 NH4＋-N 浓度升高，发酵装置的有机负荷率也较高；10％的干物质浓度产气效果最好，发酵前30d的累积产气量为4710mL，相应的容积产气率可以达到0．313m3/m3· d。实验得到的结果对牛粪秸秆混合发酵的实际应用具有一定的指导意义。
　　재발효원료C/N＝25～30，T＝36℃적조건하，연구20％，15％，10％，5％화2．5％등5충간물질농도대우분갈간혼합간식염양발효산소기성능적영향。실험결과표명：발효전30 d 위산기고봉기，동시발효삼려액중적VFA농도야교고；간물질농도증가시，산기량파동증대，삼려액중감도화 NH4＋-N 농도승고，발효장치적유궤부하솔야교고；10％적간물질농도산기효과최호，발효전30d적루적산기량위4710mL，상응적용적산기솔가이체도0．313m3/m3· d。실험득도적결과대우분갈간혼합발효적실제응용구유일정적지도의의。
In this paper anaerobic digestion of dairy manure and straw was conducted to produce biogas .Under the con-ditions of C/N=25-30 and T=36℃, five kinds of dry matter concentration of 20%, 15%, 10%, 5%and 2 .5%were tested to investigate the effect of dry matter concentration on anaerobic digestion .The result showed that first 30 days was the biogas production peak phase and VFA concentrations in the leachate were also high during the same period .When dry matter concentration increased , biogas production amount appeared larger fluctuation , and the concentrations of alka-linity and NH4+-N in the leachate also increased with higher organic loading rate .Among five kinds of dry matter con-centration 10% was more suitable for anaerobic digestion to produce biogas with total biogas production amount of 4710 mL after 30 days and volume biogas production rates of 0 .313 m3/m3 · d.These results could provide instructive meaning to the engineering application of dry anaerobic digestion .