Title: Hybrid MABR imporoves energy consumption with efficient oxygen transfer

It was demonstrated that the hybrid MABR process can remove nitrogen via the conventional nitrification/denitrification pathway in a low/no dissolved oxygen environment. Nitrification rate varied with ammonia loading rate and was 1.5 to 3.0 g NH4-N/d/m2 for the three reactors in aggregate, achieving an effluent ammonia concentration of readily biodegradable COD when compared to a similar data set obtained with a synthetic ammonia solution. COD removal occurred primarily through denitrification in the anoxic suspended biomass. Significant denitrification was achieved without nitrate recycling. The new MABR membrane product can operate in a high MLSS environment, making it suitable for use in a conventional activated sludge reactor to increase oxygen transfer and nitrification capacity. It was demonstrated that the new aeration membrane transfers oxygen efficiently, with a measured aeration efficiency of 3 to 5 kg O2/kWh and the potential to reach 6 kg O2/kWh. This step-change in energy consumption for biological treatment and nitrogen removal can significantly reduce the energy consumption for municipal sewage treatment and contribute to energy neutral wastewater treatment.

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Company  Product  Process  Other  Subjects  Event  Event  Date  Location  Publication  Publication  Date Text  Descriptor
  • Suez Energy Generation NA

  • Membrane

  • Aeration

 

 

 

 

 

 

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