Effect of HRT on Mesophilic Acidogenesis of Dairy Wastewater
- 1 December 2000
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Environmental Engineering
- Vol. 126 (12) , 1145-1148
- https://doi.org/10.1061/(asce)0733-9372(2000)126:12(1145)
Abstract
Effect of hydraulic retention time (HRT) on the acidogenesis of dairy wastewater was studied using an upflow reactor at pH 5.5, 37°C, and six HRTs ranging from 4 to 24 h. Results showed that the degree of acidification increased rapidly with HRT from 28.2% at 4 h to 54.1% at 12 h; further increase of HRT to 16 and 24 h only increased acidification slightly to 55.8 and 59.1%, respectively. The biodegradability of the three major constituents in dairy wastewater increased with HRT, following the order of carbohydrates > proteins > lipids. The predominant products were acetate, propionate, butyrate, lactate, and ethanol.Keywords
This publication has 16 references indexed in Scilit:
- Anaerobic treatment of proteinaceous wastewater under mesophilic and thermophilic conditionsWater Science & Technology, 1999
- Performance and granule characteristics of UASB process treating wastewater with hydrolyzed proteinsWater Science & Technology, 1994
- Anaerobic treatment applications and fundamentals: substrate specificity during phase separationWater Environment Research, 1994
- Effect of HRT on Acidogenic Digestion of Primary SludgeJournal of Environmental Engineering, 1994
- Pilot-Scale Demonstration of Two-Phase Anaerobic Digestion of Activated SludgeWater Science & Technology, 1991
- Anaerobic acidogenesis of a complex wastewater: I. The influence of operational parameters on reactor performanceBiotechnology & Bioengineering, 1988
- Protein degradation in anaerobic digestion: influence of volatile fatty acids and carbohydrates on hydrolysis and acidogenic fermentation of gelatinApplied Microbiology and Biotechnology, 1986
- Hydrolysis and acidogenic fermentation of a protein, gelatin, in an anaerobic continuous cultureApplied Microbiology and Biotechnology, 1984
- Anaerobic digestion of glucose with separated acid production and methane formationWater Research, 1979
- Colorimetric Method for Determination of Sugars and Related SubstancesAnalytical Chemistry, 1956