Characterization of extracellular phosphorus in enhanced biological phosphorus removal granular sludge

2021 ◽  
Vol 218 ◽  
pp. 260-269
Author(s):  
Yajing Li ◽  
Shaopo Wang ◽  
Yaping Wu ◽  
Liping Sun
Keyword(s):  
Phosphorus Removal ◽  
Granular Sludge ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Biological Phosphorus

Characterization of fouled membranes from a membrane enhanced biological phosphorus removal system

2006 ◽  
Vol 54 (10) ◽  
pp. 169-176 ◽  
Author(s):  
Z. Geng ◽  
E.R. Hall
Keyword(s):  
Membrane Fouling ◽  
Phosphorus Removal ◽  
Hydrophobic Interactions ◽  
Pilot Scale ◽  
Ionization Mass ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Membrane Pore ◽  
Biological Phosphorus

Characterization of fouled membranes is the first step towards a good understanding of membrane fouling nature and thus formulating effective engineering measures for fouling prevention and control. In this study, fouled membrane fibres collected from a pilot scale membrane enhanced biological phosphorus removal (MEBPR) process were systematically examined. Several analytical tools, including scanning electron microscopy (SEM), conventional optical microscopy (COM), energy dispersive X-ray (EDX) microanalysis, matrix assisted laser desorption/ionization – mass spectrometry (MALDI-MS) analysis, and conventional chemical analysis techniques were used. The results indicated that membrane fouling in the MEBPR process was mainly of an organic nature, and most extractable foulants were carbohydrates and humic or humic-like substances. Unlike in other wastewater treatment membrane bioreactors, microbial growth on fouled membranes was not substantial, probably due to the vigorous aeration applied and the strong hydrodynamic conditions within the membrane pore structure. After a period of sludge filtration, membrane surfaces became more hydrophobic and the resultant hydrophobic interactions between the fouled membranes and mixed liquor constituents might have accelerated the fouling process.

Enhanced biological phosphorus removal by granular sludge: From macro- to micro-scale

2010 ◽  
Vol 44 (3) ◽  
pp. 807-814 ◽  
Author(s):  
Chang-Yong Wu ◽  
Yong-Zhen Peng ◽  
Shu-Ying Wang ◽  
Yong Ma
Keyword(s):  
Phosphorus Removal ◽  
Granular Sludge ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Micro Scale ◽  
Biological Phosphorus
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