SUNPeng,HUChun-sheng,JIAORu-yuan,et al.Identification and Analysis of Membrane Fouling with and without Lining in MBR[J].China Water & Wastewater,2024,40(17):9-15.
Identification and Analysis of Membrane Fouling with and without Lining in MBR
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第17期
Page:
9-15
Column:
Date of publication:
2024-09-01
- Abstract:
- As the two commonly used membrane types in membrane bioreactor (MBR), membranes with lining and without lining show differences in the membrane fouling characteristics due to the difference in structure and properties. In this study, the fouling in the membrane with and without lining which was used in typical wastewater treatment plants in the upper reaches of the Yellow River were identified by scanning electron microscopy, UV-visible absorption spectrum, three-dimensional fluorescence spectrum and Fourier transform ion cyclotron resonance. The types and forms of the fouling were analyzed to obtain the information characteristics of contaminants in different types of membranes. From the results, there was little difference in the types of pollutants contained in these two types of membranes no matter inorganic or organic pollutants, but the selectivity of the two membranes to different pollutants were significantly different. In general, anti-fouling ability of the membrane with lining was strong,and the pollutants of the membrane with lining were mainly concentrated on the outer surface. Specifically, the membrane with lining was easier to trap metal ions and form inorganic metal ion membrane fouling. Moreover, the distribution of organic matter types in the two membrane fouling were basically the same, with good performance of benzene rings and proteins removing, but the membrane with lining showed better interception performance. Besides, it had better effects on soluble microbial products and lignin removal which have more toxic or difficult to degrade in the regular treatment process, but these contaminant were easy to adhere to the membrane pore, and therefore, it was necessary to further select the membrane cleaning method to ensure the continuous membrane filtration effect.
Last Update:
2024-09-01