Abstract
This study is aimed to assess the efficiency of residential wastewater treatment by membrane bioreactor (MBR) technology. The working volume of the reactor is 36 liters (L*W*H = 24*20*75 cm) and the pore size of submerged membrane modules is 0.4 μm. MBR experimental model is a combination of the organic matter biodegradation and microbial biomass separation technique by membranes. Laboratory scale-model was set up to assess the efficiency of residential wastewater removal in the period of 121 days with the organic loading rates from 1.7 to 6.8 kgCOD/m3.day. Due to the high biomass concentration, the wastewater treatment efficiency of MBR is higher than traditional methods. The average treatment efficiency of TSS, BOD5, COD, TN, TP are 89.4; 94.6; 92.6; 64.6 and 79.2%, respectively. In general, membrane filtration technology can be applied to treat high organic loading wastewater, this is an effective solution for sustainable environmental protection.
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