Hybrid ferrihydrite-MF/UF membrane filtration for the simultaneous removal of dissolved organic matter and phosphate

Owing to the long solids retention time and effective sludge decay, the increase in the amount of phosphorus and dissolved organic matter (DOM) in effluents is a major obstacle to the sludge in situ reduction process.

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Preparation of composite sludge carbon-based materials by LDHs conditioning and carbonization and its application in the simultaneous removal of dissolved organic matter and phosphate in sewage

Chemosphere ◽

10.1016/j.chemosphere.2020.129485 ◽

2021 ◽

Vol 270 ◽

pp. 129485

Author(s):

Weijun Zhang ◽

Tianyi Dong ◽

Haowan Cheng ◽

Hanjun Wu ◽

Chunxu Wu ◽

...

Keyword(s):

Organic Matter ◽

Dissolved Organic Matter ◽

Simultaneous Removal ◽

Carbon Based

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Performance of ultrafiltration membrane process combined with coagulation/sedimentation

Water Science & Technology ◽

10.2166/wst.2005.0640 ◽

2005 ◽

Vol 51 (6-7) ◽

pp. 209-219 ◽

Cited By ~ 15

Author(s):

N.-Y. Jang ◽

Y. Watanabe ◽

S. Minegishi

Keyword(s):

Organic Matter ◽

Dissolved Organic Matter ◽

Removal Efficiency ◽

Membrane Fouling ◽

Pilot Plant ◽

Membrane Filtration ◽

Operating Pressure ◽

Membrane Process ◽

Bench Scale ◽

Jar Test

Effects of coagulation/sedimentation as a pre-treatment on the dead-end ultrafiltration (UF) membrane process were studied in terms of membrane fouling and removal efficiency of natural dissolved organic matter, using Chitose River water. Two types of experiment were carried out. One was a bench scale membrane filtration with jar-test and the other was membrane filtration pilot plant combined with the Jet Mixed Separator (JMS) as a pre-coagulation/sedimentation unit. In the bench scale experiment, the effects of coagulant dosage, pH and membrane operating pressure on the membrane fouling and removal efficiency of natural dissolved organic matter were investigated. In the pilot plant experiment, we also investigated the effect of pre-coagulation/sedimentation on the membrane fouling and the removal efficiency of natural dissolved organic matter. Coagulation/sedimentation prior to membrane filtration process controlled the membrane fouling and increased the removal efficiency of natural dissolved organic matter.

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Removal and transformation of dissolved organic matter (DOM) during the treatment of partially stabilized leachate in membrane bioreactor

Water Science & Technology ◽

10.2166/wst.2013.350 ◽

2013 ◽

Vol 68 (5) ◽

pp. 1091-1099 ◽

Cited By ~ 10

Author(s):

Samunya Sanguanpak ◽

Chart Chiemchaisri ◽

Wilai Chiemchaisri ◽

Kazuo Yamamoto

Keyword(s):

Organic Matter ◽

Dissolved Organic Matter ◽

Membrane Filtration ◽

Fluorescence Spectra ◽

Membrane Bioreactor ◽

Leachate Treatment ◽

Partial Removal ◽

Fluorescence Excitation ◽

Treatment Processes ◽

Dom Characterization

The removal of dissolved organic matter (DOM) during municipal solid waste leachate treatment in a membrane bioreactor (MBR) was investigated. The MBR was operated with fouled and cleaned membranes, at a time. DOM, mixed liquor, and effluent were characterized by fractionation and fluorescence excitation–emission matrix (EEM) spectroscopy. Results showed DOM removals of 82% during the MBR operation with the fouled membrane. The DOM characterization indicated that most of the hydrophilic compounds and protein-like substances could be significantly removed by microbial activities in the treatment processes. Furthermore partial removal or transformation of organic substances was observed during membrane filtration. The fouled membrane improved DOM rejection by only about 2% when compared to the cleaned membrane, which demonstrated the significance of irreversible foulants on DOM rejection. There were insignificant differences in DOM fractionation and EEM fluorescence spectra between water samples filtered through the fouled and cleaned membranes.

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