Particle Collection Efficiency and Particle Re-entrainment of an Electrostatic Precipitator in a Sewage Sludge Incineration Plant
| Autor: | Hannes Felber, T. Ferge, Jürgen Maguhn, Ralf Zimmermann |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Flue gas
Sewage Waste management Particle number Chemistry Static Electricity Environmental engineering Electrostatic precipitator Incineration General Chemistry Sludge incineration Refuse Disposal Air Pollution Ultrafine particle Particle-size distribution Chemical Precipitation Environmental Chemistry Particle size Particle Size |
| Zdroj: | Environmental Science & Technology. 38:1545-1553 |
| ISSN: | 1520-5851 0013-936X |
| Popis: | In several recent studies it was shown that high atmospheric loads of submicrometer particles in the size range below 500 nm have strong impact on human health. Therefore, extensive research concerning the reduction of fine particle emissions is needed to further improve air quality. Regarding health effects, especially the emission characteristics of fine and ultrafine particles emerging from anthropogenic sources such as combustion processes are of special interest. This study shows that the emission characteristic of an electrostatic precipitator (ESP) due to re-entrainment of fine particles and their subsequent release into the atmosphere can be significantly lowered by application of different operating conditions. For this purpose the particle collection efficiency of an ESP was studied in a municipal sewage sludge incineration plant. Particles were sampled under different operating conditions upstream and downstream from the ESP, and the particle number concentrations were measured simultaneously with aerodynamic particle sizers. In addition, the size distribution of the particles downstream from the ESP was measured with high time resolution by an electrical low-pressure impactor to investigate the particle re-entrainment into the flue gas. To determine the influence of operating conditions, different rapping cycles were investigated regarding their impact on the collection efficiency and the subsequent particle re-entrainment. |
| Databáze: | OpenAIRE |
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