竹叶与餐厨垃圾厌氧共消化工艺

将黄金竹和毛竹的竹叶分别与餐厨垃圾厌氧共消化,通过分析消化过程中的产气量、pH、COD、NH4+-N和VFAs变化,探讨添加不同竹叶对餐厨垃圾厌氧消化效果的影响。实验结果表明,添加毛竹叶显著增强了餐厨垃圾的厌氧消化能力。毛竹叶+餐厨垃圾组的总产气量是餐厨垃圾对照组单独厌氧消化总产气量的3.28倍,甲烷总产量为10.1 L,COD去除率高达83.0%。而添加黄金竹叶对餐厨垃圾厌氧消化的影响则不明显,可能因为黄金竹叶在消化过程中释放了大量挥发性脂肪酸(VFAs),造成体系酸中毒。

Anaerobic co-digestion of bamboo leave and food waste

In this paper, gold bamboo leaves or mao bamboo leaves were anaerobic co-digested with food waste, in which the changes of biogas production, pH, COD, NH4+-N and VFAs were analyzed.The results showed that mao-bamboo leaves significantly enhanced the anaerobic co-digestion with food waste.The co-digestion of mao-bamboo leaves and food waste led to 3.28 times increase of the total biogas production comparing to that in anaerobic digestion of single food waste, while the total yield of methane was up to 10.1 L.In addition, the COD removal was up to 83.0% in the co-digestion of mao-bamboo leaves and food waste.Meanwhile, the addition of gold bamboo leaves had limited influence on the anaerobic digestion of food wastes, which may be attributed to the toxicity of strong acidity to methanogenesis resulted from the accumulation of volatile fatty acids(VFAs) during anaerobic digestion.