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用餐厨垃圾产氢发酵残渣进行静态和动态甲烷发酵进行试验研究。试验结果表明:产氢残渣进行甲烷发酵是可行的。在污泥接种率为60%时,产氢残渣进行静态甲烷发酵获得最高甲烷产率为441.31mL/g。产氢残渣动态甲烷平行试验结果表明:随着残渣进料负荷增加,甲烷产生量先升高再下降。低负荷下,提高负荷量可提高甲烷产量,但负荷达到一定程度后,再增加负荷时,残渣甲烷产量迅速下降。试验得到残渣甲烷动态发酵最大负荷为60kg/(L.d),此时获得甲烷平均产率为370.36mL/g。
Experimental study on static and dynamic methane fermentation of hydrogen fermentation residues produced by food and kitchen waste. The experimental results show that it is feasible to carry out methane fermentation of hydrogen-producing residue. When the sludge inoculation rate was 60%, the maximum methane yield was 441.31 mL / g from the hydrogen-producing residue for static methane fermentation. The experimental results of dynamic methane production from hydrogen-producing residue show that the methane production firstly increases and then decreases with the increase of residue feed load. Under low load, raising the load can increase methane production, but when the load reaches a certain level, the methane output of the residue drops rapidly when the load is increased. The maximum load of dynamic methane fermentation was found to be 60 kg / (L.d). The average yield of methane was 370.36 mL / g.