The waste gas stream is passed through a bed of organic material (such as peat, heather, compost, root, tree bark, softwood and different combinations) or some inert material (such as clay, activated carbon, and polyurethane), where it is biologically oxidised by naturally occurring microorganisms into carbon dioxide, water, inorganic salts and biomass.
laitoksella mitä tahansa yritystä, joka valmistaa a, b ja c kohdassa tarkoitettuja tuotteitaEurlex2018q4 Eurlex2018q4