Proceedings

Membrane Aerated Biofilm Reactor as a flexible, resilient and reliable solution for the upgrade of existing WWTPs: data from full-scale installations: PRESENTATION ONLY

Guglielmi, G., Houweling, D., Coutts, D., Ireland, J., Reeve, M.,
Peeters, J.,  Suez Water Technology and Solutions, Italy

(free)

The Membrane Aerated Biofilm Reactor (MABR) technology consists in an attached-growth process in which a gas-permeable membrane is used to transfer oxygen to a biofilm naturally growing on the membrane. Substrates like ammonia and biodegradable COD diffuse from the bulk to the biofilm, where the oxidation-reduction processes occur.

The unique characteristics of the counter-diffusional bioprocess taking place in a MABR result in an overall improved stability of the process: by delivering oxygen to the inner layers of the biofilm the stability and robustness of the bioprocess increase significantly, thus leading to a more resilient and flexible performance compared to both conventional co-diffusional attached-growth and activated sludge processes.

The present work is aimed to present and discuss results from full scale installations of the ZeeLung MABR technology by Suez WTS, with a special focus on KPIs (Key Performance Indicators), such as oxygen transfer rate (OTR) and oxygen transfer efficiency (OTE). A number of sites where full-scale cassettes are installed and operated will be presented, including the largest MABR system in the word which was designed to face an organic loading capacity increase and fulfil new P limitations and is now up and running since more than two years.

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