Two-stage upflow anaerobic digestion of concentrated sludge
The development of an innovative fermentation mode and the application of novel upflow reactors for biogasification of high-solids-content sludges are described; anaerobic digestion is conducted at higher loading rates and lower hydraulic residence times (HRT's) to obtain higher methane yields and production rates and better effluent qualities than those of conventional single-stage continuously stirred tank reactor digesters. Digestion of primary sludge in a two-phase upflow system at a 5.6-day HRT (1.2 days for stage 1 and 4.4 days for stage 2) exhibited a methane yield of 6.8 supercritical fluid/lb volatile solids added, which was significantly higher than those from conventional digestion at much higher HRT's. 27 references, 7 figures, 6 tables.
- Research Organization:
- Inst. of Gas Tech., Chicago, IL
- OSTI ID:
- 6838844
- Report Number(s):
- CONF-830567-
- Journal Information:
- Biotechnol. Bioeng. Symp.; (United States), Vol. 13; Conference: 5. symposium on biotechnology for fuels and chemicals, Gatlinburg, TN, USA, 10 May 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BIOREACTORS
DESIGN
PERFORMANCE
METHANE
PRODUCTION
SLUDGES
ANAEROBIC DIGESTION
BENCH-SCALE EXPERIMENTS
CHEMICAL COMPOSITION
INDUSTRIAL WASTES
MASS BALANCE
MESOPHILIC CONDITIONS
QUANTITY RATIO
ALKANES
BIOCONVERSION
DIGESTION
HYDROCARBONS
MANAGEMENT
ORGANIC COMPOUNDS
PROCESSING
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
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140504 - Solar Energy Conversion- Biomass Production & Conversion- (-1989)