Anoxic granulated biomass and its storage
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Miloslav Drtil
,
Lenka Babjakova
Abstract
Laboratory experiments involving shutdown and repeated start-up of a denitrification USB reactor with granulated anoxic biomass were conducted in order to find suitable conditions for a safe storage period of the biomass. Anoxic granulated biomass stored under anaerobic conditions for a half year period at 6°C and for a half month period at 18–20°C retained its activity and granular morphology. Storage of anoxic granules under anaerobic conditions for a half year period at 18–20°C led to the loss of the biomass original activity and a significant portion of the granules disintegrated. Anoxic granulated biomass stored for a one and a half month period under endogenous anoxic conditions at 18–20°C retained its activity and granular morphology. A two month storage under endogenous anoxic conditions at 18–20°C was too long and the shutdown of the reactor had to be followed by repeated anoxic granulation. Minimum loading of the USB reactor with N-NO3 to maintain endogenous anoxic conditions in the sludge bed was in the range of 0.06–0.1 kg of N-NO3 per m3 per day. Restart of the USB reactor can be accelerated by an addition of anaerobic granulated biomass.
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© 2013 Institute of Chemistry, Slovak Academy of Sciences
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Artikel in diesem Heft
- Fifty years of the Department of Chemical and Biochemical Engineering at the Slovak University of Technology in Bratislava — brief history of research
- Airlift reactor — membrane extraction hybrid system for aroma production
- CFD-based atmospheric dispersion modeling in real urban environments
- Catalytic gasification of pyrolytic oil from tire pyrolysis process
- Kinetics of thermal decomposition of aseptic packages
- Sulphur distribution in the products of waste tire pyrolysis
- Equilibrium and kinetics of protein binding on ion-exchange cellulose membranes with grafted polymer layer
- Modeling of equilibrium and kinetics of human polyclonal immunoglobulin G adsorption on a tentacle cation exchanger
- Design calculations of an extractor for aromatic and aliphatic hydrocarbons separation using ionic liquids
- Effect of viscosity of a liquid membrane containing oleyl alcohol on the pertraction of butyric acid
- Anaerobic treatment of rapeseed meal
- Anoxic granulated biomass and its storage
- Removal of selected chlorinated micropollutants by ozonation
- Degradation and toxicity changes in aqueous solutions of chloroacetic acids by Fenton-like treatment using zero-valent iron
