L. A. looks to sludge for energy

Journal Article · Thu Sep 23 04:00:00 EDT 1982 · Eng. News-Rec.; (United States)

OSTI ID:6676842

The design, operation, and economics of the $198.2 million Hyperion sewage sludge treatment plant at Los Angeles are described. This plant will end the ocean dumping of sludge, will produce 25MW of electricity 10MW of which are in excess of the plant power requirements, will lower current city air emissions levels by 3100 lb of particulates per day, and plant operating and maintenance costs will be paid for by the sale of the excess electric power produced. In the energy recovery system, primary sludge and thickened waste activated sludge will be anaerobically digested and the methane gas used as a fuel in a combined-cycle cogeneration system. Digested sludge will be centrifugally dewatered and then dried by the Carver-Greenfield (C-G) multiple-effect evaporation process. The dried sludge will fuel a starved-air, fluidized-bed combustion chamber for energy recovery and volume reduction, and ash will be trucked to a landfill. Steam from the fluid-bed combustion process will go to a steam turbine that drives an electric generator. The digester gas will power three gas turbines that also drive electric generators. Exhaust heat from the turbines will be recovered to produce steam in boilers. Two-thirds of the steam will be sent to the C-G system to dry the sludge and the rest will be used to heat Hyperion's digesters. (LCL)

• OSTI ID: 6676842
• Journal Information: Eng. News-Rec.; (United States), Journal Name: Eng. News-Rec.; (United States) Vol. 209:13; ISSN ENREA
• Country of Publication: United States
• Language: English

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10 SYNTHETIC FUELS
20 FOSSIL-FUELED POWER PLANTS
200103* -- Fossil-Fueled Power Plants-- Waste-Fueled Systems
42 ENGINEERING
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ALKANES
ANAEROBIC DIGESTION
BIOCONVERSION
CALIFORNIA
CHEMICAL REACTIONS
COGENERATION
COMBUSTION
DESIGN
DEUS
DIGESTION
ECONOMICS
ENERGY SYSTEMS
FEDERAL REGION IX
FLUIDIZED-BED COMBUSTION
GAS TURBINES
HYDROCARBONS
INDUSTRIAL PLANTS
LOS ANGELES
MACHINERY
MANAGEMENT
METHANE
NORTH AMERICA
OPERATION
ORGANIC COMPOUNDS
OXIDATION
PERFORMANCE
POWER GENERATION
POWER PLANTS
PROCESSING
REFUSE-FUELED POWER PLANTS
SEWAGE
SEWAGE SLUDGE
SLUDGES
STEAM GENERATION
STEAM TURBINES
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
USA
WASTE HEAT UTILIZATION
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PROCESSING PLANTS
WASTE PRODUCT UTILIZATION
WASTES