Diagnosis, assessment and optimisation of the design and operation of municipal MBRs

This thesis is based on diagnosing, assessing and optimising the design and operation of membrane bioreactors (MBR) used for treating municipal wastewater. Specifically, this thesis has been carried out within the framework of seven municipal MBR wastewater treatment plants (WWTP) located in Catalonia with the collaboration of the Catalan Water Agency. Firstly, the design and operational issues of MBRs have been diagnosed, together with determining the main operational problems related to this technology. Secondly, the optimisation strategies applied in each full-scale MBR and the resulting costs were assessed. Finally, two of the operational problems identified were exhaustively evaluated: The ragging phenomenon and the biological nitrogen removal and operational costs optimisations. The research carried out in this thesis has enabled the design and operation of the municipal MBRs to be assessed while, at the same time, presenting several optimisation strategies which will improve the operation and costs of this technology.

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Laboratory of Chemical and Enviromental Engineering

Institut de Medi Ambient
Universitat de Girona
Campus Montilivi
17003 Girona

Parc Científic i Tecnològic de la UdG
Edifici Jaume Casademont, Porta B
Pic de Peguera, 15
17003 Girona
Tel. +34 972 41 98 59




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