Performance evaluation of membrane bioreactor for pollutant removal from domestic wastewater
Corressponding author's email:
nmky@hcmuaf.edu.vnKeywords:
Organic compounds, nutrient, COD, domestic wastewater, MBRAbstract
The main aim of this investigation was to evaluate the capability of Membrane Bioreactor (MBR) for removal of nutrient and organic compounds from domestic wastewater. A laboratory study with a continuous stream was conducted using an experimental model of 36 liters (24*20*75 cm) and the submerged membrane module has 0.4 µm pores. The experimental model maintains pH at 6.5-8.0 and operates in 4 months with different hydraulic retention time (HRT) modes in order to evaluate the ability to treat Biological Oxygen Demand (BOD5) and Chemical Oxygen Demand (COD). The high biomass concentration lead to increase wastewater treatment efficiency more than traditionally activated sludge methods. The MBR showed a good performance to remove pollutant matters. The average BOD5 and COD removal were 94.6 and 92.6%, respectively. Besides, the average removal efficiency of TN, TP are 64.6 and 79.2% respectively. MBR as an advanced process had a proper nutrient as well as organic compounds removal efficiency from domestic wastewater.
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