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Change of foulant concentration in an anaerobic membrane bioreactor
Water Science and Technology ( IF 2.7 ) Pub Date : 2020-06-18 , DOI: 10.2166/wst.2020.296
Susumu Hasegawa 1 , Genki Murakami 1 , Ryosuke Takagi 1 , Hideto Matsuyama 1
Affiliation  

Abstract Anaerobic membrane bioreactors (AnMBRs) have many advantages, such as producing methane gas for energy generation and little excess sludge. However, membrane fouling is a serious problem because the foulant, which causes the membrane to foul, may get rejected by the membrane and accumulate in the reactor, resulting in an acceleration of membrane fouling. However, there is no information related to a change in the foulant concentration in an AnMBR. Therefore, we examined the changes in the foulant concentration in the reactor, related to membrane fouling in an AnMBR. For the influent, reactor solution, and effluent, the concentration of each component of the foulant was analyzed by using a liquid chromatography-organic carbon detector (LC-OCD). It was found that fouling in the AnMBR was closely related to the components in the reactor, and the main foulant of the ultrafiltration (UF) membrane was biopolymers (BPs). BP accumulated in the reactor because of a high rejection by the UF membrane. However, once the BP accumulated in the reactor was biodegraded, the concentration of BP decreased with time even under a high organic loading rate of 1.9kg TOC/m3/day.

中文翻译:

厌氧膜生物反应器中污染物浓度的变化

摘要厌氧膜生物反应器(AnMBR)具有许多优点,例如产生用于发电的甲烷气体和很少的剩余污泥。然而,膜污染是一个严重的问题,因为导致膜污染的污垢可能被膜排斥并积聚在反应器中,导致膜污染加速。然而,没有与 AnMBR 中污染物浓度变化相关的信息。因此,我们研究了与 AnMBR 中的膜污染相关的反应器中污染物浓度的变化。对于进水、反应器溶液和流出物,使用液相色谱-有机碳检测器(LC-OCD)分析污染物的各成分的浓度。研究发现AnMBR中的污染与反应器内的部件密切相关,其中超滤(UF)膜的主要污染物质是生物聚合物(BPs)。由于超滤膜的高截留率,BP 在反应器中积聚。然而,一旦反应器中积累的BP被生物降解,即使在1.9kg TOC/m3/天的高有机负荷率下,BP的浓度也会随着时间而降低。
更新日期:2020-06-18
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