Yang Jixiang, Ji Xin, Lu Lunhui, Ma Hua, Chen Youpeng, Guo Jinsong, Fang Fang
a Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology , Chinese Academy of Sciences , Chongqing , China.
b School of Urban Construction and Environmental Engineering , Chongqing University , Chongqing , China.
Biofouling. 2017 Jan;33(1):36-44. doi: 10.1080/08927014.2016.1262845. Epub 2016 Dec 2.
To alleviate the fouling of a filter, simple substrates, dynamic filtration, and granular sludge were applied in an anaerobic membrane bioreactor (AnMBR). The results showed that under a transmembrane pressure < 20 kPa, the filter flux ranged between 15 and 20 l (m h) for a period of 30 days. The flux was higher than the typical flux of AnMBRs with conventional membranes and most current dynamic filters. In addition, the low cost of the filter avoided the need for a higher flux. Moreover, a stable granular sludge bed, which consumed all volatile fatty acids, was maintained. A compact fouling/filtration layer formed on the filter, which contributed to low effluent chemical oxygen demand concentrations and turbidity. In addition, substrate scarcity in the filtration zone resulted in the evolution of diverse bacteria on the filter.
为减轻过滤器的污染，在厌氧膜生物反应器（AnMBR）中应用了简单基质、动态过滤和颗粒污泥。结果表明，在跨膜压力<20 kPa的情况下，过滤器通量在15至20升/（平方米·小时）之间持续了30天。该通量高于具有传统膜的AnMBR以及大多数当前动态过滤器的典型通量。此外，过滤器的低成本避免了对更高通量的需求。而且，维持了一个稳定的颗粒污泥床，其消耗了所有挥发性脂肪酸。过滤器上形成了一个致密的污染/过滤层，这有助于降低出水的化学需氧量浓度和浊度。此外，过滤区的底物稀缺导致过滤器上出现了多种细菌。
