Reduction techniques and costs last udated : 30/03/2004

Whatever the pollutant, parameters to take into account for choosing a control technique are :

• The required level of emission reduction (initial emission, regulatory constraint, …)
• Characteristic of exhaust gases (gaseous flow, pollutant flow, temperature, humidity, …)
• Suitable location for installing the treatment device
• Nature of by-products (liquid or solid)
• Waste generation (with possibility for recovery or not)
• Possible changes in efficiency through stricter regulations
• Investment and operating costs.

Some examples of techniques used for emission control :
Sulphur oxides  Nitrogen oxides  Particles  VOCs