Comparative evaluation of mesophilic and thermophilic anaerobic digestion. Phase 2. Steady state studies. Research report, September 1983-August 1987

Technical Report · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6200713

Kugelman, I J; Guida, V G

A study was conducted of the relative performance of anaerobic digestion systems under mesophilic and thermophilic conditions. Fifty liter laboratory scale digesters were fed primary sludge from the Allentown, PA Waste Water Treatment Plant. Long-term, steady-state performance data were obtained at 49.5 and 35/sup 0/C. Two hydraulic detention times, 25 days and 15 days, were used. Operation of the mesophilic and thermophilic units was within parameter ranges normally considered satisfactory. Mesophilic operation was superior to thermophilic operation total and volatile solids breakdown, gas production, and breakdown of carbohydrate, oil, and grease. Thermophilic breakdown of organic nitrogen was superior. Dewaterability of sludge produced under mesophilic conditions also was better than under thermophilic conditions.

• Research Organization: Lehigh Univ., Bethlehem, PA (USA)
• OSTI ID: 6200713
• Report Number(s): PB-89-151401/XAB
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090122* -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320604 -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Municipal Waste Management-- (1980-)
ALKANES
ANAEROBIC DIGESTION
BIOCONVERSION
BIOSYNTHESIS
CARBOXYLIC ACIDS
CHEMICAL ANALYSIS
COMPARATIVE EVALUATIONS
DIGESTION
DOCUMENT TYPES
HYDROCARBONS
MANAGEMENT
METHANE
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
PROCESSING
PROGRESS REPORT
PROPIONIC ACID
SLUDGES
SYNTHESIS
THERMODYNAMIC PROPERTIES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE PROCESSING