Schaumann BioEnergy GmbH, An der Muehlenau 4, 25421 Pinneberg, Germany.
Water Sci Technol. 2012;66(9):1923-9. doi: 10.2166/wst.2012.399.
To investigate process behaviour and process disturbances in anaerobic digestion (AD) plants, samples of more than 1500 main digesters were taken and concentrations of macro- and micronutrients as well as volatile fatty acids were analyzed. Out of these samples, 600 digesters using energy crops only and 80 digesters using waste substrates were selected to compare the chemical composition as a result of different substrate feeding. High variations in element concentrations were found in both groups. In 60 plants with low micronutrient levels, trace elements were added and process changes were observed. A significant decrease of volatile fatty acids and an increase in digester performance were measured after trace element application. Furthermore, an increase of bacterial biomass could be detected.
为了研究厌氧消化（AD）厂中的工艺行为和工艺干扰，我们采集了 1500 多个主要消化器的样本，并分析了宏量和微量营养素以及挥发性脂肪酸的浓度。在这些样本中，选择了 600 个仅使用能源作物的消化器和 80 个使用废物基质的消化器，以比较不同基质进料的化学组成。两组都发现元素浓度存在很大差异。在 60 个微量元素水平较低的植物中，添加了微量元素，并观察到工艺变化。在微量元素应用后，测量到挥发性脂肪酸显著减少，消化器性能增加。此外，还可以检测到细菌生物量的增加。
