Air emission studies of sewage sludge incinerators at the Western Branch wastewater treatment plant

Comprehensive air emission tests were conducted on two multiple-hearth incinerators equipped with venturi scrubbers, aftercoolers, and zero-hearth afterburners. A pilot wet electrostatic precipitator was also tested for its ability to reduce emissions from existing systems. Particulate matter, metals, organics, and acid gas emissions were measured by rigorous test procedures