Membrane Bio-reactors (MBR) are a combination of biotreatment with a membrane separation system by micro- or ultra-filtration (MF or UF, respectively). The main advantages offered by the process are: (i) production of a high quality, clarified and largely disinfected permeate product in a single stage, and (ii) operation at higher mixed liquor suspended solids (MLSS) concentration. The latter reduces the required reactor size (resulting in a smaller footprint) and favors the growth of slow-growing microorganisms (like nitrifying bacteria). In addition, the process offers other advantages such as an absolute and independent control of solids retention time (SRT) and hydraulic retention time (HRT), and a reduced sludge production.
This chapter contains seven videolectures recorded by Prof. Simon Judd from Cranfield University, U.K., which present an overview of the main characteristics, advantages, process configurations as well as commercial and operational aspects of membrane bio-reactor systems.
Time Framework of the course: 1 week
After the successful completion of this chapter, the student will be able to: