Study on membrane bioreactor technology for nutrients (tn and tp) removal from wastewater
Corressponding author's email:
nmky@hcmuaf.edu.vnKeywords:
MBR, TN, TP, MLSS, Urban wastewaterAbstract
The membrane bioreactor (MBR) technology model was operated in 121 days with different HRT to evaluate the efficient removal of nitrogen and phosphorus. The initial MLSS concentration in reactor was maintained 10,000 mg/l. The submerged membrane module with filter pore size 0.4μm was used to separate the treated wastewater. Permeation cycles were performed at 10 min ON/1.0 min OFF. The SRT sludge retention time was controlled in 25 days. The membrane filtration rate was performed at 15-20 l/(m2.h). The OLRs organic loading was varied in the range from 1.7 to 6.8 kgCOD/m3.d. The high biomass concentration was found to increase the wastewater treatment efficiency in comparison with those by the traditional methods. The average removal efficiencies of TN, TP were 64.6 and 79.2%, respectively. The studying results indicated that the MBR biological membrane technology advantages could be efficiently applied for urban wastewater treatment.
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