Factors governing particle number emissions in a waste-to-energy plant.

Abstract Particle number concentration and size distribution measurements were performed on the stack gas of a waste-to-energy plant which co-incinerates municipal solid waste, sewage sludge and clinical waste in two lines. Average total number of particles was found to be 4.0 · 10 5  cm −3 and 1.9 · 10 5  cm −3 for the line equipped with a wet flue gas cleaning process and a dry cleaning system, respectively. Ultrafine particles (dp