Depending on its severity, clogging can significantly reduce wastewater treatment capacity, increase CIP frequency, and significantly damage membrane equipment. Dennis Livingston et al. report
Giorgio Mannina et al present their comparison of an IFAS-MBR with a regular MBR for nutrient removal
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A membrane bioreactor (MBR) is a wastewater treatment process where a perm-selective membrane is integrated with a biological process – a suspended growth bioreactor.
A membrane bioreactor is essentially a version of the conventional activated sludge (CAS) system. Whereas the CAS process uses a secondary clarifier or settlement tank for solid/liquid separation, an MBR uses a membrane. This provides a number of advantages relating to process control and product water quality.
There is no significant difference in the design of the MBR technology for a process treating industrial rather than municipal wastewater. The key differences between the two applications are that, for industrial effluents, there are:
A full needs analysis is required before selecting a membrane bioreactor system, first of all to confirm that an MBR will be the most cost effective solution for a particular requirement, taking everything into account. Secondly, to ensure an MBR is the most appropriate choice of technology for the circumstances.
Operation and maintenance (O&M) parameters for an MBR include:
The plant at Kaarst-Nordkanal has been in operation for 15 years. It was refurbished with a new anaerobic digestor (AD) in March 2019 ...
Ángel Robles et al discuss the challenges of process control in AnMBR technology, focusing on the filtration component and encompassing closed and open loop systems
