ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Water Resource Management Section, Bologna, Italy.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2012;47(2):204-9. doi: 10.1080/10934529.2012.640562.
Although most membrane bioreactors are used under aerobic conditions, over the last few years there has been increased interest in their application for anaerobic processes. This paper presents the results obtained when a bench-scale submerged anaerobic membrane bioreactor was used for the treatment of wastewaters generated in the agro-food industry. The reactor was fed with synthetic wastewater consisting of cheese whey and sucrose, and volumetric organic loading rates (OLRs) ranging from 1.5 to 13 kgCOD/(m(3)d) were applied. Under the operating conditions studied, the maximum applicable OLR was between 6 and 10 gCOD/(gL), which fell within the ranges of the high-rate anaerobic wastewater treatment systems, while high concentrations of volatile fatty acids were produced at higher OLR rates. With an OLR of 1.5-10 gCOD/(gL), the reactor showed 94% COD removal, whereas this value dropped to 33% with the highest applied OLR of 13 gCOD/(gL). The study therefore confirms that membrane bioreactors can be used for anaerobic wastewater treatment.
尽管大多数膜生物反应器在有氧条件下使用，但近年来，人们对其在厌氧过程中的应用越来越感兴趣。本文介绍了在中试规模下的浸没式厌氧膜生物反应器用于处理农业食品工业产生的废水时所取得的成果。该反应器以含有乳清和蔗糖的合成废水为进料，应用的容积有机负荷率（OLR）范围为 1.5 至 13kgCOD/（m³d）。在研究的操作条件下，最大适用 OLR 介于 6 至 10gCOD/（gL）之间，这属于高负荷厌氧废水处理系统的范围，而在较高的 OLR 速率下会产生高浓度的挥发性脂肪酸。在 1.5-10gCOD/（gL）的 OLR 下，反应器的 COD 去除率达到 94%，而在应用的最高 OLR 为 13gCOD/（gL）时，该值降至 33%。因此，该研究证实了膜生物反应器可用于厌氧废水处理。
