Filtration - general

Synonyms, abbreviations and/or process names

—  Surface filtration
—  Depth filtration
—  Flat bed filtration
—  Fabric filtration
—  …

Removed components

—  Dust, particles

Diagram

Process description

During filtration, dust is removed by passing the waste gas through a filter medium. The filter medium can be made of various materials, such as textile, plastic, cellulose and ceramics. The construction and lay-out is determined by the technique and the application.

Variants

Fabric filter (compact filter), ceramic filter, absolute filter, mist filter.

Efficiency

The removal yield is 99 - 99.9 % depending on the used variant.

Boundary conditions

—  Flow rate:  Up to 1 800 000 Nm3/h depending on the technique
—  Temperature:  Dependent upon filter medium
—  In-coming concentrations:  0.1 -230 g/Nm3

Auxiliary materials

Filter medium

Environmental aspects

Depends on used variant (see specific technique sheets)

Energy use

Depends on used variant (see specific technique sheets)

Cost aspects

  • Investment

Depends on used variant (see specific technique sheets)

  • Operating costs

Depends on used variant (see specific technique sheets)

Advantages and disadvantages

  • Advantages

Depends on used variant (see specific technique sheets)

  • Disadvantages

Depends on used variant (see specific technique sheets)

Applications

 Depends on used variant (see specific technique sheets)

References

  1. Factsheets on Air-emission reduction techniques, www.infomil.nl, Infomil
  2. Common waste water and waste gas treatment and management systems in the chemical sector. BREF document, European IPPC Bureau, http://eippcb.jrc.es
  3. Elslander H., De Fré R., Geuzens P., Wevers M. (1993). Comparative evaluation of possible gas purification systems for the combustion of household waste. In: Energie & Milieu, 9
  4. Work-book on environmental measures: “Metal and electro-technical industry” (1998 ). VNG publishers
  5. Supplier information