Makni H, Bettaieb F, Dhaouadi H, M'Henni F, Bakhrouf A
Laboratoire d'Analyse et de Contrôle des Polluants Chimiques et Microbiologiques de l'Environnement, Faculté de Pharmacie, Rue Avicenne, Monastir, Tunisia.
Environ Technol. 2006 Sep;27(9):1031-6. doi: 10.1080/09593332708618715.
The granulation process was examined using synthetic wastewater containing glucose in a 1 liter laboratory upflow anaerobic sludge blanket (UASB) reactor. The anaerobic biotransformation of glucose was investigated during the granulation process. Anaerobic unacclimated sludge and glucose were used as seed and primary substrate, respectively. Massive initial granules were developed after three months of start-up. The effect of operational parameters such as influent glucose concentrations, pH, Volatile Fatty Acids (VFA) were also considered during granulation. The presence of a large concentration of sulphate in the sludge of a mesophilic (37 degrees C+/-1 degrees C) UASB reactor treating sewage resulted in severe process disturbance, with a complete inhibition of the propionate-degrading ability of the sludge. Severe inhibition of acetate removal was also observed, with concentrations of propionic acid and acetic acid in the reactor effluent of 1.72% and 18.88%, respectively. Hydrogen sulfide (H2S) is formed from the anaerobic decomposition of organic matter containing sulfate by sulfate-reducing bacteria. This gas is toxic at rate exceeding 2% tolerable by a reactor. The result shows the rate of hydrogen sulfide production was 3.8 %.
在一个1升的实验室上流式厌氧污泥床（UASB）反应器中，使用含有葡萄糖的合成废水对颗粒化过程进行了研究。在颗粒化过程中研究了葡萄糖的厌氧生物转化。分别使用未经厌氧驯化的污泥和葡萄糖作为种子和主要底物。启动三个月后形成了大量初始颗粒。在颗粒化过程中还考虑了进水葡萄糖浓度、pH值、挥发性脂肪酸（VFA）等运行参数的影响。在处理污水的中温（37摄氏度±1摄氏度）UASB反应器的污泥中，大量硫酸盐的存在导致了严重的过程干扰，污泥中丙酸降解能力完全受到抑制。还观察到乙酸盐去除受到严重抑制，反应器流出物中丙酸和乙酸的浓度分别为1.72%和18.88%。硫化氢（H2S）由含硫酸盐的有机物通过硫酸盐还原菌的厌氧分解形成。当该气体在反应器中的含量超过2%的耐受率时具有毒性。结果表明硫化氢的产生率为3.8%。
