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Performance of an upflow anaerobic reactor combining a sludge blanket and a filter treating sugar waste
Author(s) -
Guiot S. R.,
van den Berg L.
Publication year - 1985
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260270608
Subject(s) - blanket , chemical oxygen demand , effluent , volume (thermodynamics) , biomass (ecology) , hybrid reactor , pulp and paper industry , wastewater , chemistry , sugar , oxygen , environmental science , environmental engineering , materials science , food science , biology , organic chemistry , ecology , physics , quantum mechanics , engineering , composite material
A new hybrid reactor, the upflow blanket filter (UBF), which combined on open volume in the bottom two‐thirds of the reactor for a sludge blanket and submerged plastic rings (Flexiring, Koch Inc., 235 m 2 /m 3 ) in the upper one‐third of the reactor volume, was studied. This UBF reactor was operated at 27°C at loading rates varying from 5 to 51 g chemical oxygen demand (COD)/L d with soluble sugar wastewater (2500 mg COD/L). Maximum removal rates of 34 g COD/L d and CH 4 production rates of 7 vol/vol d [standard temperature and pressure (STP)] were obtained. The biomass activity was about 1.2 g COD/g volatile suspended solids per day. Conversion (based on effluent soluble COD) was over 93% with loading rates up to 26 g COD/L d. At higher loading rates conversion decreased rapidly. The packing was very efficient in retaining biomass.