6533b86efe1ef96bd12cbe44
RESEARCH PRODUCT
The role of EPS concentration in MBR foaming: analysis of a submerged pilot plant.
Gaetano Di BellaMichele TorregrossaGaspare Vivianisubject
Environmental EngineeringBiofoulingSurface PropertiesBioengineeringPortable water purificationPilot ProjectsMembrane bioreactorWater PurificationMBRBiofoulingBiopolymersBioreactorsFoam testBioreactorcardiovascular diseasesWaste Management and DisposalSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleWaste managementSewageViscosityRenewable Energy Sustainability and the EnvironmentChemistryMembranes ArtificialGeneral MedicinePulp and paper industryPilot plantActivated sludgelipids (amino acids peptides and proteins)EPSExtracellular SpaceProtein concentrationFoamingdescription
Foaming in Membrane BioReactor (MBR) is a frequently discussed topic. Some authors reported that the phenomenon is due to filamentous organisms, like at Conventional Activated Sludge (CAS) plants. However, in recent years, other authors reported that the Extra-cellular Polymer Substances (EPSs) concentration is an important factor for controlling foam as well. Nevertheless, even if a number of MBR plants are affected by foaming, presently there are no suitable methods to evaluate the phenomenon. To facilitate the study of this controversial phenomenon in an MBR system, certain foam tests proposed in the past for CASPs were investigated. The results of the tests were able to adequately measure quantity, stability and quality of the foam. In particular, the Scum Index increased proportionally with the EPS concentration and mixed liquor viscosity; Foam Power was mainly correlated with the protein concentration of in the EPS; Foam Rating was also correlated with the EPS concentration.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-05-19 | Bioresource technology |