Portable fluorescence instrument for detecting membrane integrity in membrane bioreactor(MBR)

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外文摘要：This study proposed the design,fabrication,and assembly of membrane integrity detection instruments in membrane bioreactors(MBR)based on fluorescence spectroscopy.Based on the PARAFAC model,we found that the peak at 280/335 nm strengthened after membrane breakage.The peak at 340/430 nm reflected the sludge concentration in the MBR and reduced the influence of internal filtration effects on detection.Therefore,we determined that the dual-LED light source excitation detection system can detect tryptophan-like substances at 280 nm(T-peak)and humic acid at 340 nm(C-peak).T-peak was identified as the core index indicating membrane integrity.Moreover,the C-peak is the reference indicator factor for a sensitive response to changes in the sludge concentration.The portable fluorescence instrument exhibited high sensitivity and good feedback accuracy compared to particle counting and turbidity detection,where the log reduction value was greater than 3.5.This overcomes the disadvantage of false alarms in particle counters and is not affected by the position of the pump system.This portable instrument provides a flexible and highly sensitive method for the assessment of industrial membrane integrity.

外文关键词：

Membrane integrityFluorescence spectrumPortable instrumentMembrane bioreactor

作者：

Yang Yu、Changchun Xin、Yuxiang Liu、Fei Gao、Lei Zhang、Hui Jia、Jie Wang

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作者单位：

State Key Laboratory of Separation Membranes and Membrane Processes,Tiangong University,Tianjin 300387,China

School of Environmental Science and Engineering,Tiangong University,Tianjin 300387,China

School of Environmental Science and Engineering,Tianjin University,Tianjin 300072,China

Shenyang Academy of Environmental Sciences,Shenyang 110167,China

Cangzhou Institute of Tiangong University,Tiangong University,Cangzhou 061000,China

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基金：

Research Agricultural Project of Tianjin(China)Cangzhou Institute of Tiangong University(China)Beijing Nova Program(China)Analytical & Testing Center of Tiangong University(China)for SEM work

项目编号：

JBGG202207TGCYY-F-0103Z201100006820040

出版年：

2024

DOI：

10.1007/s11783-024-1783-8

环境科学与工程前沿

高等教育出版社

环境科学与工程前沿

影响因子：0.545

ISSN：2095-2201

年,卷(期)：2024.18(2)

参考文献量33