... linked to its high level of organics (including refractory organics) and salinity which can dramatically reduce biological floc formation and biomass settle ability in conventional clarifiers. In a membrane bioreactor (MBR), an ultra filtration membrane separates the treated water from the biomass...

... with increasing traffic and the everlasting bad quality of indoor air in poor countries linked to the usage of coal or biomass for heating and cooking. Human activity is now accepted as the main reason of this global warming through greenhouse gases (GHG) emissions mainly CO 2 . But some scientists have begun...