By Birgitte K. Ahring (Editor)
Anaerobic digestion is an enormous box for the therapy of waste and wastewater. in recent times the point of interest has been at the caliber of the effluent surroundings new calls for for pathogen elimination and for winning elimination of undesirable chemical substances through the anaerobic method. the 2 volumes on Biomethanation are dedicated to featuring the kingdom of artwork in the technological know-how and alertness of anaerobic digestion. They describe the fundamental microbiolgical wisdom of value for realizing the strategies of anaerobic bioreactors in addition to the most recent molecular recommendations for interpreting those structures. additionally, the functions for remedy of waste and wastewaters are awarded in addition to the newest wisdom on procedure keep watch over and legislation of anaerobic bioprocesses. jointly those volumes supply an outline of a starting to be quarter, which formerly hasn't ever been awarded in one of these complete method.
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Additional resources for Advances in Biochemical Engineering & Biotechnology, Volume 082, Biomethanation II
5 Characteristics of the Granular Sludge The Inorganic Composition . . . The Content of Extracellular Polymers Diffusional Resistance . . . . Metabolic Interspecies Transfer . . Activity . . . . . . . . Factors Controlling Granulation . Quality of the Inoculum . . . . Nutrients . . . . . . . . Temperature . . . . . . . Cations and Anions . . . . . Hydraulic Conditions . . . . . . . . . . . . . . . . . . 39 .
Dk Present address. J. E. Schmidt, Environment & Resources DTU bldg 115, The Technical University of Denmark, 2800 Lyngby, Denmark The long retention time of the active biomass in the high-rate anaerobic digesters is the key factor for the successful application of the high rate anaerobic wastewater treatment. The long solids retention time is achieved due to the specific reactor configuration and it is enhanced by the immobilization of the biomass, which forms static biofilms, particle-supported biofilms, or granules depending on the reactor’s operational conditions.
However, one should bear in mind that the higher activity can lead to considerable wash-out if the start-up process is not followed carefully . , the action of some enzymes is influenced by co-factors containing certain metals. Nutrient requirements are related to conversion rates, which can vary according to the organic loading rates applied to the UASB reactor . Studies have shown that satisfactory granulation and degradation of the carbon source can be achieved if the ratio COD:N:P in the wastewater is less than 250 : 5 : 1 [28, 92, 166].
Advances in Biochemical Engineering & Biotechnology, Volume 082, Biomethanation II by Birgitte K. Ahring (Editor)