Nitrogen Removal and Behavior of Soluble Microbial Products (SMP) in the MBR Process with Intermittent Aerobic Condition

  • Cha, Gi-Cheol (Department of Environmental Engineering, Yonsei University) ;
  • Myoung Hwang (Department of Environmental Engineering, Yonsei University)
  • Published : 2001.12.01

Abstract

A lab-scale submerged membrane bio-reactor (MBR) with intermittent aeration was carried out for investigating the behavior of soluble microbial products (SMP). The SMP concentration of mixed liquor at Run 1 accumulated immediately at the end of running and biodegradable SMP converted into non-biodegradable SMP, but it did not occurred at the Run 2 and 3. The SMP formation coefficient (k) at the anoxic phase was a little higher than oxic phase, and the lowest k was investigated at Run 3. The combination of biological denitrification with the MBR Process was advantageous in the prevention of membrane bio-fouling.

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