污泥增强番茄茎叶单相发酵产沼气研究

Optimizing the biogas production from single-phase anaerobic fermentation of tomato stems and leaves using sludge

针对番茄茎叶自然发酵速率较慢的问题,采用与剩余污泥混合发酵(番茄茎叶与污泥挥发性固体质量比为1:2)调控底物营养结构,同时接种0.1 g/m L颗粒污泥弥补体系产甲烷菌微生物不足的方法,不仅使番茄茎叶的去除率达到95%以上,而且显著提高有机物发酵的沼气产率至263 m L/g(提高7.5倍),沼气中甲烷体积分数也相应提高至64.5%。该发酵方法不仅达到了以废治废的目的,而且实现了资源利用最大化。

Due to the slow natural anaerobic fermentation characteristics of tomato stems and leaves, waste activated sludge was closed to be added into the digestor of tomato stems and leaves （VS ratio of waste activated sludge and tomato stems and leaves of t ：2） to improve substrate nutrient composition. Anaerobic granular sludge of 0. t g/mL was inoculated to compenstaes the deficiency of methanogenesis microbes. Under such regulation,the removal rate of tomato stems and leaves was increased to more than 95 %, and the corresponding biogas yield of organie fermentation was improved to 263 mL/g （7.5 times improvement）. Meanwhile, methane volume fraction in biogas was also increased by 64.5%. This method achieves not only the goal of waste control by waste, but also that of the maximization of resource utilization.