Evaluation of air pollution abatement systems for multiple-hearth sewage sludge incinerators

Conference · Mon Sep 01 04:00:00 EDT 1986

OSTI ID:7002137

Annamraju, G; Gerstle, R W; Shah, Y M; Arora, M L

Capital and annual costs were calculated for the application of six different air-pollution-control system options to municipal sewage-sludge incinerators that were using multiple-hearth furnaces. The systems involved three principal types of air-pollution equipment - wet scrubbers, fabric filters, and electrostatic precipitators - applied to three different plant sizes (plants incinerating 36, 72, and 300 tons of dry sludge per day in one, two, and eight multiple-hearth furnaces, respectively). The six options were: (1) venturi/tray scrubber with a 40-inch pressure drop, (2) fabric filter system operating at 500 deg and equipped with an upstream temperature control, (3) fabric filter system operating at 500 deg and equipped with a heat exchanger and a scrubber for SO/sub 2/ reduction, (4) electrostatic precipitator (ESP) with upstream limited temperature and humidity control, (5) same as Option 4 but with an additional downstream wet scrubber for SO/sub 2/ reduction, and (6) ESP with upstream temperature control and an SO/sub 2/ scrubber. Technical feasibility studies indicated that all three types of controls could achieve a total particulate removal efficiency of 99 percent. The venturi/tray scrubber option entailed the lowest capital cost, but annual operating costs were highest because of the high pressure drops and increased energy use.

• Research Organization: PEI Associates, Inc., Cincinnati, OH (USA)
• OSTI ID: 7002137
• Report Number(s): PB-87-100665/XAB
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION ABATEMENT
AIR POLLUTION CONTROL
CHALCOGENIDES
CONTROL
ELECTROSTATIC PRECIPITATORS
EQUIPMENT
FABRIC FILTERS
FILTERS
INCINERATORS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLLUTION ABATEMENT
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SCRUBBERS
SEWAGE
SEWAGE SLUDGE
SLUDGES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
WASTES