School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
School of Environmental Science and Engineering and Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
Bioresour Technol. 2018 Feb;250:398-405. doi: 10.1016/j.biortech.2017.11.036. Epub 2017 Nov 14.
Biofilm membrane bioreactor (BF-MBR) is considered as an important wastewater treatment technology that incorporates advantages of both biofilm and MBR process, as well as can alleviate membrane fouling, with respect to the conventional activated sludge MBR. But, to be efficient, it necessitates the establishment of proper methods for the assessment of membrane fouling. Four Hermia membrane blocking models were adopted to quantify and evaluate the membrane fouling of BF-MBR. The experiments were conducted with various operational conditions, including membrane types, agitation speeds and transmembrane pressure (TMP). Good agreement between cake formation model and experimental data was found, confirming the validity of the Hermia models for assessing the membrane fouling of BF-MBR and that cake layer deposits on membrane. Moreover, the influences of membrane types, agitation speeds and transmembrane pressure on the Hermia pore blocking coefficient of cake layer were investigated. In addition, the permeability recovery after membrane cleaning at various operational conditions was studied. This work confirms that, unlike conventional activated sludge MBR, BF-MBR possesses a low degree of membrane fouling and a higher membrane permeability recovery after cleaning.
生物膜膜生物反应器（BF-MBR）被认为是一种重要的废水处理技术，它结合了生物膜和 MBR 工艺的优点，并且可以缓解传统活性污泥 MBR 的膜污染问题。但是，为了提高效率，需要建立适当的方法来评估膜污染。采用了四种 Hermia 膜堵塞模型来量化和评估 BF-MBR 的膜污染。实验在不同的操作条件下进行，包括膜类型、搅拌速度和跨膜压力（TMP）。发现成饼模型与实验数据吻合较好，证实了 Hermia 模型用于评估 BF-MBR 膜污染和膜上饼层沉积的有效性。此外，还研究了膜类型、搅拌速度和跨膜压力对饼层 Hermia 孔堵塞系数的影响。此外，还研究了在不同操作条件下清洗后膜的渗透性恢复情况。这项工作证实，与传统的活性污泥 MBR 不同，BF-MBR 的膜污染程度较低，清洗后膜的渗透性恢复较高。
