Two-stage upflow anaerobic digestion of concentrated sludge

Conference · Sat Jan 01 04:00:00 EST 1983 · Biotechnol. Bioeng. Symp.; (United States)

OSTI ID:6838844

Ghosh, S; Sajjad, A; Henry, M P; Bleakney, R A

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-
• Conference Information: Journal Name: Biotechnol. Bioeng. Symp.; (United States) Journal Volume: 13
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090122* -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
140504 -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
ALKANES
ANAEROBIC DIGESTION
BENCH-SCALE EXPERIMENTS
BIOCONVERSION
BIOREACTORS
CHEMICAL COMPOSITION
DESIGN
DIGESTION
HYDROCARBONS
INDUSTRIAL WASTES
MANAGEMENT
MASS BALANCE
MESOPHILIC CONDITIONS
METHANE
ORGANIC COMPOUNDS
PERFORMANCE
PROCESSING
PRODUCTION
QUANTITY RATIO
SLUDGES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES