最大比产甲烷活性对餐厨垃圾厌氧消化系统稳定性能指示性分析

Analysis of the Specifie Methtanogence Activity in Anaerobic Digestion System Stable Performance Indicative

实验的目的是考察最大比产甲烷活性(Specific Methanogenic Activity,SMA)对餐厨垃圾厌氧消化系统稳定性能指示性能。在中温条件下进行实验室规模的连续式餐厨垃圾厌氧消化试验,监测的指标为沼气产率、pH、甲烷含量、总VFA、SMA。实验结果显示沼气产率、甲烷含量、pH值对系统不稳定性反应不敏感。SMA数值的变化趋势,可以对厌氧消化反应器过程不稳定性进行指示。

The aim of this work is the effects of SMA on the stability of performance indicator of kitchen waste anaerobic digestion system. In this paper, the anaerobic digestion of food waste （FW） was studied on laboratory scale, operating at 37% under quasi - continuous conditions. Parameters such as biogas production rate, vs biogas production and pH were tested online, while methane content, total volatile fat- ty acids （TVFA） offline. The results showed that biogas production rate, methane content and pH value did not show clear response to system imbalance. It was found that the change of SMA the could clearly indicate the process imbalance.