Results 181 to 190 of about 38,149 (213)
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Microaeration for hydrogen sulfide removal in UASB reactor
Bioresource Technology, 2014The removal of hydrogen sulfide from biogas by microaeration was studied in Up-flow Anaerobic Sludge Blanket (UASB) reactors treating synthetic brewery wastewater. A fully anaerobic UASB reactor served as a control while air was dosed into a microaerobic UASB reactor (UMSB). After a year of operation, sulfur balance was described in both reactors.
Lucie, Krayzelova +3 more
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Influence of extrinsic factors on granulation in UASB reactor
Applied Microbiology and Biotechnology, 2006The aim of this mini-review is to synthesize and analyze information on how the process of granulation is affected by environmental and operational conditions in the reactor. The factors reviewed are temperature, pH, alkalinity, organic loading rate, upflow velocity, nature and strength of substrate, nutrients, multivalent cations and heavy metals ...
Manoj K, Tiwari +3 more
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UASB reactor effluent disinfection by ozone and chlorine
Journal of Environmental Science and Health, Part A, 2015This research studied the sequential ozone and chlorine process with respect to, the inactivation of indicator bacteria and the formation of ozone disinfection byproducts in sanitary wastewater effluent. The applied ozone doses were 5, 8 and 10 mg.O3.L(-1), followed by chlorine doses of 10, 20 and 30 mg.L(-1), respectively.
Ribeiro da Silvia, G.H. +3 more
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UASB Treatment of Wastewater with Concentrated Mixed VFA
Journal of Environmental Engineering, 1995The upflow anaerobic-sludge blanket (UASB) process consistently removed 97–99% of chemical oxygen demand (COD) from wastewater containing concentrated mixed volatile fatty acids (VFA) at 37°C at loading rates of up to 24 g-COD/(Lsd) corresponding to a food/microorganism ratio of 0.78 g-COD/[g–volatile suspended solids (VSS)sd].
Ho Kwong Chui, Fang, HHP, Yu You Li
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Anaerobic digestion of baker's yeast wastewater using a UASB reactor and a hybrid UASB reactor
2010The start-up and step-up operation of two 16-liter, continuously operated, upflow anaerobic reactors receiving baker's yeast wastewater is presented in this thesis. The two reactors (A and B) were almost identical in construction. Reactor A was a conventional upflow anaerobic sludge blanket (UASB) reactor, and reactor B was a hybrid reactor.
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Granulation mechanism of a UASB reactor supplemented with iron
Anaerobe, 2008The aim of this paper was to propose a granulation mechanism in order to interpret all the experimental observations that arose during experiments on two UASB reactors, where one was supplemented with ferrous iron at a dose of 0.01 g Fe(2+) per g COD feed.
Apostolos, Vlyssides +2 more
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Co-degradation of resorcinol and catechol in an UASB reactor
Bioresource Technology, 2008Co-degradation of resorcinol and catechol was studied in a catechol acclimated up flow anaerobic sludge blanket (UASB) reactor. Synthetic binary aqueous solution having a total concentration of 1000 mg/L with the resorcinol/catechol (R/C) ratio of 1/19, 1/9, 3/17, 1/4, 1/3, 3/7, 2/3 and then 1/3 was fed at various time intervals to the UASB reactor ...
Revanuru, Subramanyam, I M, Mishra
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Determination of granule size distribution in a UASB reactor
Journal of Environmental Management, 2008Granular sludge is the key factor for an efficient operation of an upflow anaerobic sludge blanket (UASB) reactor. In order to monitor the granularity of anaerobic sludge, the determination of the granule size distribution is of vital importance. For this reason, several techniques have been proposed; however, they are either tedious, imprecise or ...
Apostolos, Vlyssides +2 more
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Hydrodynamic characteristics of UASB bioreactors.
Journal of environmental science & engineering, 2013The hydrodynamic characteristics of UASB bioreactors operated under different organic loading and hydraulic loading rates were studied, using three laboratory scale models treating concocted sucrose wastewater. Residence time distribution (RTD) analysis using dispersion model and tanks-in-series model was directed towards the characterization of the ...
Siby, John, Vinod, Tare
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An examination of the structure of UASB granules
Water Research, 1995Sonication, staining and the analysis of extracellular polymers (ECP) were used to examine the structure of granules from pilot-scale and laboratory-scale anaerobic upflow sludge blanket reactors. The pilot-scale unit was part of the SERC Anaerobic Facility which was treating the liquors from the manufacture of instant coffee.
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