Energy conservation through combined disposal of sewage sludge and refuse

Conference · Sat Jan 01 04:00:00 EST 1977 · Proc. Annu. WWEMA Ind. Pollut. Conf.; (United States)

OSTI ID:6012342

Olexsey, R A

Sewage sludge generally is incombustible, even after extensive dewatering. Mixed municipal refuse (MMR) is usually autogenous, producing an excess of heat over that required to evaporate the moisture and raise the solid material to its ignition point. It is thermally logical to combine the energy consuming combustion of sludge with the energy producing combustion of solid waste. In the earliest attempts at coincineration in the US, dewatered sludge was simply dumped on the burning grate of an MMR incinerator. Due to the high moisture content of the combined feed, the fire generally went out, or combustion was so inefficient that the material was merely toasted. All modern successful installations employ some sort of predrying of the sludge. In direct contact and indirect contact drying, the sludge is predried in equipment external to the refuse incinerator. In multiple hearth coincineration and pyrolytic coincineration, sludge is mixed with the refuse before being fed into the combanta energies.

• Research Organization: Environmental Protection Agency, Cincinnati, OH
• OSTI ID: 6012342
• Conference Information: Journal Name: Proc. Annu. WWEMA Ind. Pollut. Conf.; (United States) Journal Volume: 5
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320604* -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Municipal Waste Management-- (1980-)
CHEMICAL REACTIONS
COMBUSTION
COMPARATIVE EVALUATIONS
COST
DRYING
EFFICIENCY
ENERGY CONSERVATION
ENERGY EFFICIENCY
ENERGY SOURCES
FUELS
INCINERATORS
MANAGEMENT
MUNICIPAL WASTES
OXIDATION
PROCESSING
REFUSE DERIVED FUELS
REMOVAL
SEWAGE
SEWAGE SLUDGE
SLUDGES
SOLID WASTES
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER REMOVAL