Comparison of anoxic granulation in USB reactors with various inocula
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Katarína Galbová
,
Petra Pagáčová
Abstract
Anoxic granulation process with four different inocula was monitored in a laboratory post-denitrification up-flow sludge bed (USB) reactor. Wastewater containing 20 mg L−1 NO3-N and methanol as an organic carbon source was used. Gradual increase of mass volumetric loading (B v) and hydraulic loading (γ) resulted in spontaneous granulation of anoxic biomass both from flocculant activated sludge and from anaerobic granulated sludge. With flocculant activated sludge as the inoculum, anoxic granules sedimentation properties and maximum loadings of the USB reactor depended on the sludge volume index (SVI) of the inoculum. B v,max achieved in the USB reactor with flocculant inoculum from a municipal wastewater treatment plant (SVI = 208 mL g−1) was only 4.2 kg of COD per m3 per day and 0.7 kg of NO3-N per m3 per day. B v,max using flocculant inoculum from an industrial wastewater treatment plant (SVI = 170 mL g−1) was 8.1 kg of COD per m3 per day and 1.35 kg of NO3-N per m3 per day. With anaerobic granulated inoculum (SVI range 8–11 mL g−1), markedly higher loadings in the USB reactor and lower SVI values of anoxic granulated biomass were achieved. Values of B v,max were in the range of 16.1–22.4 kg of COD per m3 per day and of 2.7–3.7 kg of NO3-N per m3 per day (depending on the inoculum and the granulation procedure). It was proved that anaerobic granulated sludge is not just an inoculum, it is also a carrier for new denitrification biomass.
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© 2009 Institute of Chemistry, Slovak Academy of Sciences
Articles in the same Issue
- Co-digestion of agricultural and industrial wastes
- Comparison of anoxic granulation in USB reactors with various inocula
- A study of selected phytoestrogens retention by reverse osmosis and nanofiltration membranes - the role of fouling and scaling
- Displacement washing of kraft pulp cooked from a blend of hardwoods
- Solid suspension and gas dispersion in gas-solid-liquid agitated systems
- Implementation of marginal quantities in management of cogeneration units operating in liberal market environment
- Kinetic study of wood chips decomposition by TGA
- LES and URANS modelling of turbulent liquid-liquid flow in a static mixer: Turbulent kinetic energy and turbulence dissipation rate
- Steady state and dynamic simulation of a hybrid reactive separation process
- Prediction of liquid-liquid flow in an SMX static mixer using large eddy simulations
- Simulation of a hybrid fermentation-separation process for production of butyric acid
- Simulation of aerobic landfill in laboratory scale lysimeters — effect of aeration rate
- Application of anoxic fixed film and aerobic CSTR bioreactor in treatment of nanofiltration concentrate of real textile wastewater
- Pretreatment of landfill leachate by chemical oxidation processes
- Development of β and α isotactic polypropylene polymorphs in injection molded structural foams
- Effect of time on the metal-support (Fe-MgO) interaction in CVD synthesis of single-walled carbon nanotubes
- Unique role of water content in enzymatic synthesis of ethyl lactate using ionic liquid as solvent
- Autothermal biodrying of municipal solid waste with high moisture content
- Kinetics of nitric oxide oxidation
Articles in the same Issue
- Co-digestion of agricultural and industrial wastes
- Comparison of anoxic granulation in USB reactors with various inocula
- A study of selected phytoestrogens retention by reverse osmosis and nanofiltration membranes - the role of fouling and scaling
- Displacement washing of kraft pulp cooked from a blend of hardwoods
- Solid suspension and gas dispersion in gas-solid-liquid agitated systems
- Implementation of marginal quantities in management of cogeneration units operating in liberal market environment
- Kinetic study of wood chips decomposition by TGA
- LES and URANS modelling of turbulent liquid-liquid flow in a static mixer: Turbulent kinetic energy and turbulence dissipation rate
- Steady state and dynamic simulation of a hybrid reactive separation process
- Prediction of liquid-liquid flow in an SMX static mixer using large eddy simulations
- Simulation of a hybrid fermentation-separation process for production of butyric acid
- Simulation of aerobic landfill in laboratory scale lysimeters — effect of aeration rate
- Application of anoxic fixed film and aerobic CSTR bioreactor in treatment of nanofiltration concentrate of real textile wastewater
- Pretreatment of landfill leachate by chemical oxidation processes
- Development of β and α isotactic polypropylene polymorphs in injection molded structural foams
- Effect of time on the metal-support (Fe-MgO) interaction in CVD synthesis of single-walled carbon nanotubes
- Unique role of water content in enzymatic synthesis of ethyl lactate using ionic liquid as solvent
- Autothermal biodrying of municipal solid waste with high moisture content
- Kinetics of nitric oxide oxidation
