کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4996559 | 1368271 | 2017 | 7 صفحه PDF | دانلود رایگان |
- Comparison between SMW and PMW in cake layer characteristic of MBR were studied.
- PMW aggravated the cake layer formation with rougher, thinner and denser structure.
- SMW highlighted the organic function but weakened the inorganic ones in cake layer.
In previous studies, cake layer analysis in membrane bioreactor (MBR) was both carried out with synthetic and practical municipal wastewater (SMW and PMW), leading to different results. This study aimed to identify the comparison between SMW and PMW in cake layer characteristic analysis of MBR. Two laboratory-scale anoxic/oxic MBRs were operated for over 90Â days with SMW and PMW, respectively. Results showed that PMW led to rough cake layer surface with particles, and the aggravation of cake layer formation with thinner and denser cake layer. Additionally, inorganic components, especially Si and Al, in PMW accumulated into cake layer and strengthened the cake layer structure, inducing severer biofouling. However, SMW promoted bacterial metabolism during cake layer formation, thus aggravated the accumulation of organic components into cake layer. Therefore, SMW highlighted the organic components in cake layer, but weakened the inorganic functions in practical MBR operation.
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Journal: Bioresource Technology - Volume 244, Part 1, November 2017, Pages 934-940