Study on Fouling of Nanofiltration Membranes when Treating the MBR Effluent

Xiu Tao Zhang; Kai Sun

doi:10.4028/www.scientific.net/AMR.442.157

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 442Study on Fouling of Nanofiltration Membranes when...

Study on Fouling of Nanofiltration Membranes when Treating the MBR Effluent

Abstract:

The source of water in this paper is the effluent of MBR. The pressure of nanofiltration system was monitored during the conditioning phase to check the fouling of nanofiltration membrane. The morphology and distribution of polluants on the membrane surface were examined by scanning electron microscopy (SEM), with additionalenergy dispersive spectrometer (EDS) analysis. Then analyzes the main causes of membrane fouling. And the result of SEM and EDS about membrane showed that, the major foulants of membrane include organic substances and silicon dioxide. And there may be some inorganic substances, which contained magnesium (Mg) and calcium (Ca). Thought cleaning experiments with HCl, STPP (Sodium tripolyphosphate, Na₅P₃O₁₀) + Na-DDBS (sodium dodecyl benzene sulfonate, C₆H₅(CH2)₁₂-SO₃Na) about fouled membrane, cleaning efficiency is up to 87%.

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Periodical:

Advanced Materials Research (Volume 442)

Pages:

157-161

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.442.157

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Online since:

January 2012

Authors:

Xiu Tao Zhang, Kai Sun

Keywords:

Membrane Cleaning, Membrane Fouling, Nanofiltration

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