Performance of a Coagulant-Membrane Bioreactor for the Removal of Dissolved Organic Matter and Phosphorus

Title
Performance of a Coagulant-Membrane Bioreactor for the Removal of Dissolved Organic Matter and Phosphorus
Authors
이정열최보경맹승규안규홍송경근
Keywords
Coagulation; Membrane Bio-reactor; Non-Woven Fabric Filter; Phosphorus; Soluble Microbial Products
Issue Date
2013-02
Publisher
Journal of chemical engineering of Japan
Citation
VOL 46, NO 2, 127-133
Abstract
We report an investigation into the e ectiveness of a hybrid membrane bioreactor (MBR) composed of an anoxic, nonwoven fabric lter (NWFF)-aerobic reactor and an integrative micro lter (MF) with simultaneous dosing of a coagulant. Preliminary jar tests were conducted with four di erent additives (aluminum sulfate, FeCl3, FeSO4, and PACl) to observe the e ects induced by changes in pH, alkalinity, soluble chemical oxygen demand (SCOD), and PO4 3-P of the permeate on the NWFF-aerobic reactor. The use of aluminum sulfate improved performance as it related to SCOD and phosphorus removal in the amounts of 2.1 mol aluminum sulfate/mol PO4 3-P. In the hybrid MBR, the average total phosphorus removal e ciency of the entire system was as high as 79% with continuous addition of 100 mg/L aluminum sulfate. Threedimensional uorescence excitation-emission matrix (F-EEM) spectroscopy of the liquid samples from the MBR indicated the presence of humic-like organic matter, which was regarded as primary aromatic organics.
URI
http://pubs.kist.re.kr/handle/201004/45712
ISSN
00219592
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