Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, Minas Gerais, Brazil.
Department of Sanitary and Environmental Engineering, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Pampulha, CEP 31270-901 Belo Horizonte, Minas Gerais, Brazil.
Bioresour Technol. 2017 Dec;245(Pt A):342-350. doi: 10.1016/j.biortech.2017.08.126. Epub 2017 Aug 24.
This research investigated the effect of hydraulic retention time (HRT) on two-stage anaerobic membrane bioreactor (2-SAnMBR) performance treating sugarcane vinasse. The experimental setup consisted of an upflow acidogenic reactor and a continuous stirred methanogenic reactor, fitted with submersed microfiltration hollow-fiber membranes. The results indicated excellent performance and robustness of 2-SAnMBR. The reduction in HRT of 5.3-3.1days did not cause loss of its performance. The 2-SAnMBR showed high capacity of removing organic matter (97%), producing biogas (6.3Nm of CH per m of treated vinasse) and did not completely remove important nutrients to fertigation. Reducing the HRT, the average mass of soluble microbial products (SMP) and extracellular polymeric substances (EPS) per mass of mixed liquor volatile suspended solids (MLVSS) increased. Consequently, the transmembrane pressure (TPM) rate and fouling resistance rise. Despite the fouling effect, physical and chemical cleaning processes were able to recover operational permeability.
本研究考察了水力停留时间（HRT）对两段式厌氧膜生物反应器（2-SAnMBR）处理甘蔗糖蜜性能的影响。实验装置由上流式产酸反应器和连续搅拌甲烷化反应器组成，内置浸没式微滤中空纤维膜。结果表明，2-SAnMBR 具有出色的性能和鲁棒性。HRT 从 5.3 天减少到 3.1 天并没有导致其性能丧失。2-SAnMBR 表现出高去除有机物的能力（97%），产生沼气（每处理甘蔗糖蜜 6.3Nm 的 CH），并且没有完全去除对灌溉施肥很重要的营养物质。随着 HRT 的减少，混合液挥发性悬浮固体（MLVSS）中每单位质量的可溶性微生物产物（SMP）和胞外聚合物（EPS）的平均质量增加。因此，跨膜压力（TPM）速率和污染阻力上升。尽管存在污染问题，但物理和化学清洗过程能够恢复运行渗透性。
