Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Bloco 1, 4th floor, CEP 31270-901, Belo Horizonte, Minas Gerais, Brazil.
Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Bloco 1, 4th floor, CEP 31270-901, Belo Horizonte, Minas Gerais, Brazil.
Bioresour Technol. 2013 Oct;146:494-503. doi: 10.1016/j.biortech.2013.07.110. Epub 2013 Jul 29.
A two-stage submerged anaerobic membrane bioreactor (2-SAnMBR) was designed for the treatment of sugarcane vinasse. For start-up, the flow rate was reduced whenever VFA levels reached critical levels in the methanogenic reactor. After acclimation, the system was operated under a continuous flow. Separation of the stages was observed during the entire period of operation. VFA, COD and DOC levels of raw effluent, acidified effluent and permeate averaged 2141, 3525 and 61 mg VFA L(-1) (as acetic acid), 15727, 11512 and 488 mg COD L(-1), and, 3544, 3533 and 178 mg DOC L(-1), respectively. Overall COD and DOC removal efficiencies of 96.9±0.7% and 95.0±1.1%, respectively, were reached. Methane content of the biogas from the acidogenic and methanogenic reactors ranged 0.1-4.6% and 60.1-70.1%, respectively. Removable fouling strongly affected filtration performance and cake layer formation accounted for most of filtration resistance. Membrane resistance was related to presence of protein-like substances and carbohydrates.
两段式淹没式厌氧膜生物反应器（2-SAnMBR）用于处理甘蔗糖蜜废水。启动时，当产甲烷反应器中的 VFA 水平达到临界水平时，就会降低流速。适应后，系统在连续流条件下运行。在整个运行期间观察到两个阶段的分离。原水、酸化水和渗透液的 VFA、COD 和 DOC 水平分别为 2141、3525 和 61mg VFA L(-1)（以乙酸计）、15727、11512 和 488mg COD L(-1)、3544、3533 和 178mg DOC L(-1)。总的 COD 和 DOC 去除效率分别达到 96.9±0.7%和 95.0±1.1%。产酸和产甲烷反应器中沼气的甲烷含量分别为 0.1-4.6%和 60.1-70.1%。可去除的污垢强烈影响过滤性能，饼层形成占过滤阻力的大部分。膜阻力与蛋白质样物质和碳水化合物的存在有关。
